JP2023120423A - Stapling instrument comprising deactivatable lockout - Google Patents

Abstract

To provide a surgical stapling assembly for performing laparoscopic and minimally invasive surgical procedures.SOLUTION: A surgical system is disclosed that comprises: a stapling instrument (30500) including a staple firing lockout (30514); and a staple cartridge (30520) with lockout projections (30526) configured to defeat the staple firing lockout when the staple cartridge is seated in the stapling instrument.SELECTED DRAWING: Figure 136

Description

(Cross reference to related applications)
This application is based on U.S. Provisional Patent Application No. 62/807,310, entitled "METHODS FOR CONTROLLING A POWERED SURGICAL STAPLER THAT HAS SEPARATE ROTARY CLOSURE AND FIRRING SYSTEMS," filed February 19, 2019, 201. February 19, 9 U.S. Provisional Patent Application No. 62/807,319, filed on Jan. 20, 2019, entitled "SURGICAL STAPLING DEVICES WITH IMPROVED LOCKOUT SYSTEMS," and U.S. Provisional Patent Application No. 62/807,309, filed Feb. 19, 2019, for the invention; , the entire contents of the disclosures of which are incorporated herein by reference. This application claims the benefit of U.S. Provisional Patent Application No. 62/650,887, entitled "SURGICAL SYSTEMS WITH OPTIMIZED SENSING CAPABILITIES," filed March 30, 2018, the entire contents of which , incorporated herein by reference. This application is based on U.S. Provisional Patent Application No. 62/649,302, filed March 28, 2018, entitled "INTERACTIVE SURGICAL SYSTEMS WITH ENCRYPTED COMMUNICATION CAPABILITIES," filed March 28, 2018, U.S. Provisional Application No. 62/649,294, entitled "DATA STRIPING METHOD TO INTERROGATE PATIENT RECORDS AND CREATE ANONYMIZED RECORD," U.S. Provisional Patent Application No. 62/649,300, filed March 28, 2018, entitled "SURGICAL HUB"; SITUATIONAL AWARENESS", U.S. Provisional Patent Application No. 62/649,309, filed March 28, 2018, entitled "SURGICAL HUB SPATIAL AWARENESS TO DETERMINE DEVICES IN OPERATING THEATER", United States filed March 28, 2018 patent Provisional Application No. 62/649,310, entitled "COMPUTER IMPLEMENTED INTERACTIVE SURGICAL SYSTEMS," U.S. Provisional Application No. 62/649,291, filed March 28, 2018, entitled "USE OF LASER LIGHT AND RED-GREEN-BLUE COLORATION TO DETERMINE PROPERTIES OF BACK SCATTERED LIGHT”, U.S. Provisional Patent Application No. 62/649,296, filed March 28, 2018, entitled “ADAPTIVE CONTROL PROGRAM UPDATES FOR SURGICAL”. DEVICES”, 2018 U.S. Provisional Application No. 62/649,333, filed March 28, entitled "CLOUD-BASED MEDICAL ANALYTICS FOR CUSTOMIZATION AND RECOMMENDATIONS TO A USER," U.S. Provisional Application No. 62, filed March 28, 2018; / 649, 327, the name of the invention "CLOUD -BASED MEDICAL Analytics for Security And Authentication TRENDS TRENDS and REACTIVE MEASURES" U.S. patent temporary application No. 62/649, 315, the name of the invention "Data" HANDLING AND PRIORITIZATION IN A CLOUD ANALYTICS NETWORK," U.S. Provisional Patent Application No. 62/649,313, filed March 28, 2018, entitled "CLOUD INTERFACE FOR COUPLED SURGICAL DEVICES," 2018. filed on March 28 U.S. Provisional Application No. 62/649,320, entitled "DRIVE ARRANGEMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS," U.S. Provisional Application No. 62/649,307, filed March 28, 2018, entitled " and U.S. Provisional Patent Application No. 62/649,323, filed March 28, 2018, entitled "SENSING ARRANGEMENTS FOR ROBOT-ASSISTED". Claiming the benefits of "SURGICAL PLATFORMS" and the entire contents of these disclosures are incorporated herein by reference.

The present invention relates to surgical instruments and to surgical stapling and severing instruments and staple cartridges for use therewith designed for stapling and severing tissue in a variety of situations.

Various features of the embodiments described herein, together with their advantages, can be understood by the following description in conjunction with the accompanying drawings below.
1 is a perspective view of a powered surgical stapling system; FIG. 2 is a perspective view of a replaceable surgical shaft assembly of the powered surgical stapling system of FIG. 1; FIG. 2 is an exploded view of a portion of the handle assembly of the powered surgical stapling system of FIG. 1; FIG. 3 is an exploded view of the replaceable surgical shaft assembly of FIG. 2; FIG. 5 is another exploded view of a portion of the replaceable surgical shaft assembly of FIG. 4; FIG. FIG. 14 is a perspective view of another powered surgical stapling system; 7 is an exploded view of a portion of the shaft assembly of the powered surgical stapling system of FIG. 6; FIG. 7 is an exploded view of a portion of the handle assembly of the powered surgical stapling system of FIG. 6; FIG. FIG. 14 is a side view of another surgical end effector that may be used with the rotary powered surgical stapling system; 10 is an exploded perspective view of the surgical end effector of FIG. 9; FIG. 11 is an exploded view of a rotary powered firing member that may be used with the surgical end effector of FIGS. 9 and 10; FIG. 10 is a partial cross-sectional view showing initial insertion of a new, unfired surgical staple cartridge within the surgical end effector of FIG. 9; FIG. 13 is another partial cross-sectional view of the surgical end effector of FIG. 12 after a surgical staple cartridge has been operably attached therein; FIG. 14 is an enlarged partial cross-sectional view showing the firing member and cam assembly of the end effector of FIG. 13; FIG. 10 is another partial cross-sectional view of the surgical end effector of FIG. 9 prior to insertion of a new surgical staple cartridge therein and with its firing member lockout assembly in the locked position; FIG. 16 is an enlarged partial cross-sectional view showing the firing member and lockout lugs of the end effector of FIG. 15, with the cam assembly and end effector channel omitted for clarity; FIG. Fig. 10 is a side view of another surgical end effector with its anvil in an open position; 18 is a partial bottom perspective view of the surgical end effector of FIG. 17; FIG. 18 is a perspective view of the channel attachment mechanism and anvil lockout spring of the surgical end effector of FIG. 17; FIG. 18 is a partial bottom perspective view of the surgical end effector of FIG. 17 without a surgical staple cartridge installed therein and with its anvil in a locked position; FIG. 21 is another partial bottom perspective view of the surgical end effector of FIG. 20 after a matching surgical staple cartridge has been installed therein and the anvil lockout spring has been moved to an unlocked position; FIG. 22 is a perspective view of a proximal end portion of the surgical staple cartridge of FIG. 21; FIG. FIG. 14 is a partially exploded view of a surgical staple cartridge and corresponding anvil and anvil lockout system of a surgical end effector; FIG. 14 is a partially exploded view of a surgical staple cartridge and corresponding anvil and anvil lockout system of another surgical end effector; FIG. 14 is a partial bottom view of the channel of another end effector with a matching surgical staple cartridge loaded therein with a portion of the matching surgical staple cartridge omitted for clarity; 26 is a side view of a portion of the surgical end effector of FIG. 25 with portions of the channel, anvil and cartridge omitted for clarity; FIG. FIG. 27 is a partial cross-sectional end view of the surgical end effector of FIGS. 25 and 26 shown in the closed position of the staple cartridge fitted with the anvil; FIG. 27 is another partial cross-sectional end view of the surgical end effector of FIGS. 25 and 26 with its anvil shown in a locked open position; 27 is a side view of the anvil lock of the surgical end effector of FIGS. 25 and 26 in locked and unlocked configurations (dashed lines); FIG. FIG. 12 is a side view of a portion of another surgical end effector with portions of the channel, anvil, and cartridge omitted for clarity; 31 is a front view of an anvil lock of the surgical end effector of FIG. 30; FIG. 32 is a top view of the anvil lock of FIG. 31; FIG. FIG. 12 is a cross-sectional side view of another surgical end effector with its anvil in an open position and a compatible surgical staple cartridge mounted therein; 34 is a partial perspective view of the proximal end of the conforming surgical staple cartridge of FIG. 33 in relation to a portion of the anvil locking mechanism of the surgical end effector of FIG. 33; FIG. 34 is a schematic diagram of a portion of the channel of the surgical end effector of FIG. 33 and the contour of the matching surgical staple cartridge of FIG. 33 inserted therein; FIG. 34 is another cross-sectional side view of the surgical end effector of FIG. 33 with its anvil in the open position during initial installation of a non-compliant surgical staple cartridge therein; FIG. FIG. 14 is a cross-sectional side view of another surgical end effector with its anvil in an open position while a compatible surgical staple cartridge is installed therein; FIG. 128 is a cross-sectional side view of a portion of another surgical end effector with its anvil in an open position while a compatible surgical staple cartridge is installed therein; FIG. 128 is a cross-sectional side view of a portion of another surgical end effector with its anvil in an open position while a compatible surgical staple cartridge is installed therein; 40 is a cross-sectional side view of the surgical end effector of FIG. 39 while a non-compliant cartridge is installed therein; FIG. FIG. 10 is a partial perspective view of the proximal end portion of the anvil; FIG. 12 is a partial perspective view of the proximal end portion of another anvil; FIG. 10 is a partial cross-sectional end view of a portion of another surgical end effector; 44 is a partial perspective view of the proximal end portion of the surgical end effector of FIG. 43; FIG. 44 is a partial cross-sectional perspective view of a portion of the channel and anvil lock of the surgical end effector of FIG. 43, with the anvil lock in a locked position; FIG. 44 is a partial side view of the surgical end effector of FIG. 43 with the anvil in the open position and the anvil lock thereof shown in dashed lines in the locked position; FIG. 44 is another partial cross-sectional perspective view of a portion of the channel and anvil lock of the surgical end effector of FIG. 43, with the anvil lock in an unlocked position; FIG. 44 is another partial side view of the surgical end effector of FIG. 43 with the anvil in the closed position and the anvil lock thereof shown in dashed lines in the unlocked position; FIG. FIG. 4 is a cross-sectional end view of a portion of another surgical end effector; 50 is a partial perspective view of the proximal end portion of the surgical end effector of FIG. 49; FIG. 50 is a partial cross-sectional side view of a portion of the channel and anvil lock of the surgical end effector of FIG. 49, with the anvil lock in the locked position; FIG. FIG. 12 is a partial side view of another surgical end effector with its anvil in the open position and its anvil lock shown in dashed lines in the locked position; 53 is a side view of a portion of the anvil of the surgical end effector of FIG. 52; FIG. 54 is a partial perspective view of a portion of the anvil of FIG. 53; FIG. 53 is a partial cross-sectional perspective view of a portion of the channel and anvil lock of the surgical end effector of FIG. 52, with the anvil lock in a locked position; FIG. 53 is another partial cross-sectional perspective view of a portion of the channel and anvil lock of the surgical end effector of FIG. 52, with the anvil lock in an unlocked position; FIG. 53 is a partial side view of the surgical end effector of FIG. 52 with the anvil in the closed position and the anvil lock thereof shown in dashed lines in the unlocked position; FIG. FIG. 11 is a partial perspective view of another anvil; 59 is a partial cross-sectional perspective view of a portion of another channel usable in connection with the anvil of FIG. 58; FIG. FIG. 10 is a side view of a portion of another anvil; 61 is a perspective view of a portion of the anvil of FIG. 60; FIG. FIG. 11 is a perspective view of a portion of another anvil; FIG. 14 is a side view of another surgical end effector with its anvil in an open position prior to installing a surgical staple cartridge therein; 64 is another side view of the surgical end effector of FIG. 63 after a matching surgical staple cartridge has been installed therein; FIG. 64 is an end view of the surgical end effector closure tube of the surgical end effector of FIG. 63 with its closure lock in the locked position; FIG. 66 is another end view of the surgical end effector closure tube and closure lock of FIG. 65, with the closure lock shown in the unlocked position; FIG. 64 is a partial perspective view of a portion of a compatible surgical staple cartridge and closure lock of the surgical end effector of FIG. 63; FIG. 64 is a partial side view of the surgical end effector of FIG. 63 with its anvil in the open position prior to installing a surgical staple cartridge therein; FIG. FIG. 69 is another partial side view of the surgical end effector of FIG. 68 with its anvil in the open position while installing a compatible surgical staple cartridge therein; 69 is a partial side view of the surgical end effector of FIG. 68 with its anvil in the open position during initial installation of a compatible surgical staple cartridge therein; FIG. 71 is another partial side view of the surgical end effector of FIG. 70 with its anvil in an open position after a compatible surgical staple cartridge has been operably mounted therein; FIG. 72 is a partial cross-sectional perspective view of a portion of the compatible surgical staple cartridge shown in FIGS. 70 and 71; FIG. FIG. 71 is another partial side view of the surgical end effector of FIG. 70 with its anvil in the open position while mounting a surgical staple cartridge without the matching cam assembly in the starting position; FIG. 14 is a partial side view of another surgical end effector with its anvil in an open position during initial installation of a compatible surgical staple cartridge therein; 75 is another partial side view of the surgical end effector of FIG. 74 with the anvil in the open position after a compatible surgical staple cartridge has been operably mounted therein; FIG. 76 is a perspective view of the anvil lock and channel attachment mechanism of the surgical end effector of FIGS. 74 and 75; FIG. 76 is a perspective view of a portion of a surgical staple cartridge compatible with the surgical end effector of FIGS. 74 and 75; FIG. 75 is another partial side view of the surgical end effector of FIG. 74 with its anvil in the open position after a non-compliant surgical staple cartridge has been installed therein; FIG. FIG. 14 is a side view of another surgical end effector with a compatible surgical staple cartridge loaded therein and its anvil in an open position; 80 is a top view of a portion of a surgical staple cartridge compatible with the surgical end effector of FIG. 79, with portions thereof omitted for clarity; FIG. 81 is a partial cross-sectional side view taken along line 81-81 of FIG. 80 of a portion of the surgical staple cartridge of FIG. 80 installed within the surgical end effector of FIG. 79, showing the cartridge nose assembly in the locked position; FIG. ing. 82 is another partial cross-sectional side view taken along line 82-82 of FIG. 80 of a portion of the surgical staple cartridge of FIG. 80 installed within the surgical end effector of FIG. 79, with the cartridge nose in the unlocked position; showing the assembly. 83 is another partial cross-sectional side view taken along line 83-83 of FIG. 80 of a portion of the surgical staple cartridge of FIG. 80 installed within the surgical end effector of FIG. 79, the cartridge nose assembly in the locked position; FIG. is shown. 84 is another partial cross-sectional side view taken along line 84-84 of FIG. 80 of a portion of the surgical staple cartridge of FIG. 80 installed within the surgical end effector of FIG. 79, with the cartridge nose in the unlocked position; showing the assembly. FIG. 16 is a partial cross-sectional view of a portion of the firing member and cam assembly of the surgical staple cartridge, the cam assembly in the start position and in unlocking engagement with the firing member lock on the firing member; 86 is another partial cross-sectional view of a portion of the firing member of FIG. 85 with the firing member lock in the locked position; FIG. FIG. 14 is a side view of a portion of an anvil of another surgical end effector with the anvil in an open position relative to a matching surgical staple cartridge mounted within a corresponding channel omitted for clarity; 88 is another side view of the anvil and surgical staple cartridge of FIG. 87 during initial closing of the anvil; FIG. 88 is another side view of the anvil and surgical staple cartridge of FIG. 87 after the anvil has been moved to the closed position; FIG. FIG. 90 is a perspective view of a portion of the compatible surgical staple cartridge of FIGS. 87-89; FIG. 90 is a partial bottom view of the anvil of FIGS. 87-89; FIG. 90 is a fragmentary perspective view of a surgical staple cartridge incompatible with the anvil of FIGS. 87-89; 93 is a side view of the anvil of FIGS. 87-89 in an open position relative to the non-conforming surgical staple cartridge of FIG. 92 mounted within corresponding channels omitted for clarity; FIG. 94 is another side view of the anvil and surgical staple cartridge of FIG. 93 during initial closing of the anvil; FIG. 94 is another side view of the anvil and surgical staple cartridge of FIG. 93 after the anvil has been moved to the closed position; FIG. FIG. 14 is a partial cross-sectional side view of a portion of another surgical end effector loaded with a compatible surgical staple cartridge, with its anvil omitted for clarity; 97 is a top view of a portion of the surgical staple cartridge and surgical end effector of FIG. 96; FIG. 98 is a partial perspective view of the proximal end portion of the compatible surgical staple cartridge of FIG. 97; FIG. FIG. 97 is another partial cross-sectional side view of a portion of the surgical end effector of FIG. 96 showing attachment of a conforming surgical staple cartridge therein; FIG. 97 is another partial cross-sectional side view of a portion of the surgical end effector of FIG. 96 showing attachment of a conforming surgical staple cartridge therein; 99 is a top view of the surgical end effector of FIG. 98 and a compatible surgical staple cartridge; FIG. FIG. 97 is another partial cross-sectional side view of a portion of the surgical end effector of FIG. 96 showing installation of a non-compliant surgical staple cartridge therein; FIG. 97 is another partial cross-sectional side view of a portion of the surgical end effector of FIG. 96 showing installation of a non-compliant surgical staple cartridge therein; 104 is a top view of the surgical end effector of FIG. 103 and a non-conforming surgical staple cartridge; FIG. FIG. 97 is another partial cross-sectional side view of a portion of the surgical end effector of FIG. 96 showing installation of a non-compliant surgical staple cartridge therein; 106 is a top view of the surgical end effector of FIG. 105 and a non-conforming surgical staple cartridge; FIG. FIG. 12 is a partial cross-sectional perspective view of a portion of another surgical end effector with a non-compliant surgical staple cartridge mounted therein; 108 is a partial top view of the surgical end effector of FIG. 107 and a portion of the non-conforming surgical staple cartridge; FIG. 106 is another partial top view of the surgical end effector of FIG. 105 with a compatible surgical staple cartridge installed therein; FIG. FIG. 14 is a partial cross-sectional perspective view of a portion of another surgical end effector with a compatible surgical staple cartridge mounted therein; 111 is a partially exploded view of a portion of the surgical end effector of FIG. 110; FIG. 111 is a partial cross-sectional end view of the surgical end effector of FIG. 110 and a compatible surgical staple cartridge; FIG. 111 is another partial cross-sectional surgical end view of the end effector of FIG. 110 with a mismatched surgical staple cartridge installed therein; FIG. 111 is another partial cross-sectional perspective view of a portion of the surgical end effector of FIG. 110 with a mismatched surgical staple cartridge installed therein; FIG. 115 is a top view of the surgical end effector and surgical staple cartridge of FIG. 114; FIG. FIG. 14 is a top view of a portion of another surgical staple cartridge; 117 is a partial cross-sectional perspective view of a portion of the surgical staple cartridge of FIG. 116, with its cam assembly in the locked position; FIG. 117 is another top view of the surgical staple cartridge of FIG. 116 interacting with a matching actuator portion of a surgical end effector; FIG. 117 is another partial cross-sectional perspective view of a portion of the surgical staple cartridge of FIG. 116 with its cam assembly in an unlocked position; FIG. 10 shows a stapling instrument with some components removed, including a cartridge channel, a staple cartridge disposed within the cartridge channel, and a firing member, with the firing member in an unfired position, according to at least one embodiment; is a partial elevational view shown in FIG. 121 is a partial elevational view of the stapling instrument of FIG. 120 showing the firing member in the locked out position; FIG. 10 shows a stapling instrument with some components removed, including a cartridge channel, a staple cartridge disposed within the cartridge channel, and a firing member, with the firing member in an unfired position, according to at least one embodiment; is a partial elevational view shown in FIG. 123 is a partial elevational view of the stapling instrument of FIG. 122 showing the firing member in an unlocked position; FIG. 123 is a partial elevational view of the stapling instrument of FIG. 122 showing the firing member in the locked out position; FIG. 123 is a partial bottom view of the stapling instrument of FIG. 122 showing the firing members in the unfired position; FIG. 123 is a partial perspective view of the staple cartridge of FIG. 122; FIG. FIG. 122 is a partial perspective view of a staple cartridge in accordance with at least one embodiment; 10 shows a stapling instrument with some components removed, including a cartridge channel, a staple cartridge disposed within the cartridge channel, and a firing member, with the firing member in an unfired position, according to at least one embodiment; is a partial elevational view shown in FIG. 129 is a partial elevational view of the stapling instrument of FIG. 128 showing the firing member in an unlocked position; FIG. 129 is a partial top view of the stapling instrument of FIG. 128 shown in the unfired position of FIG. 128; FIG. 129 is a partial top view of the stapling instrument of FIG. 128 shown in the unlocked position of FIG. 129; FIG. 129 is a partial perspective view of the staple cartridge of FIG. 128 in an unused configuration; FIG. 129 is a partial perspective view of the staple cartridge of FIG. 128 in a used configuration; FIG. 10 shows a stapling instrument with some components removed, including a cartridge channel, a staple cartridge disposed within the cartridge channel, and a firing member, with the firing member in an unfired position, according to at least one embodiment; is a partial elevational view shown in FIG. 135 is a partial elevational view of the stapling instrument of FIG. 134 showing the firing member in the locked out position; FIG. A stapling instrument including a cartridge channel, a staple cartridge disposed within the cartridge channel, a firing member, and a firing member lock, wherein the firing member is unlocked by the staple cartridge, according to at least one embodiment, in part. FIG. 3 is a partial elevational view with the components removed; 137 is a partial elevational view of the stapling instrument of FIG. 136 showing an improper staple cartridge installed within the cartridge channel; FIG. 137 is a plan view, partially in section, of the stapling instrument of FIG. 136 showing an improper staple cartridge installed within the cartridge channel; FIG. 137 is a plan view, partially in section, of the stapling instrument of FIG. 136 showing the firing member lock unlocked by the staple cartridge; FIG. FIG. 222 is a partial cross-sectional view of a stapling instrument unlocked by a staple cartridge in accordance with at least one embodiment; FIG. 222 is a partial cross-sectional view of a stapling instrument unlocked by a staple cartridge in accordance with at least one embodiment; 141 is a partial perspective view of the staple cartridge of FIG. 140; FIG. 142 is a partial perspective view of the staple cartridge of FIG. 141; FIG. FIG. 122 is a partial cross-sectional perspective view of a staple cartridge pan in accordance with at least one embodiment; A stapling instrument including a cartridge channel, a staple cartridge disposed within the cartridge channel, a firing member, and a firing member lock, wherein the firing member is unlocked by the staple cartridge, according to at least one embodiment, in part. FIG. 3 is a partial elevational view with the components removed; 146 is a partial perspective view of the stapling instrument of FIG. 145 showing a different staple cartridge positioned within the cartridge channel without unlocking the firing members; FIG. 146 is a partial perspective view of the stapling instrument of FIG. 145 showing the firing member in the locked configuration; FIG. 147 is a partial perspective view of a stapling instrument configured to be unlocked by a different staple cartridge of FIG. 146; FIG. 149 is a perspective view of a staple cartridge similar to the staple cartridge of FIG. 146 and configured to unlock the stapling instrument of FIG. 148; FIG. 146 is a perspective view of a staple cartridge similar to the staple cartridge of FIG. 145 and configured to unlock the stapling instrument of FIG. 145; FIG. 1 is a stapling instrument with some components removed that includes a cartridge channel, a staple cartridge disposed within the cartridge channel, a firing member, an anvil, and a dual firing member/anvil lock, according to at least one embodiment; 1 is a partially exploded view shown in an unlocked condition, with the stapling instrument shown in an unlocked condition; FIG. 152 is a partial perspective view of the stapling instrument of FIG. 151 unlocked by insertion of the staple cartridge into the cartridge channel; FIG. 152 is a partial cross-sectional view of the stapling instrument of FIG. 151 showing the stapling instrument of FIG. 151 in the locked state; FIG. 152 is a partial cross-sectional view of the stapling instrument of FIG. 151 showing the stapling instrument of FIG. 152 in an unlocked condition; FIG. 152 is a perspective view of the firing member/anvil lock of FIG. 151; FIG. FIG. 122 is a partial perspective view of a staple cartridge in accordance with at least one embodiment; FIG. 122 is a partial perspective view of a staple cartridge in accordance with at least one embodiment; FIG. 122 is a partial perspective view of a staple cartridge in accordance with at least one embodiment; FIG. 122 is a partial perspective view of a staple cartridge in accordance with at least one embodiment; FIG. 122 is a partial perspective view of a staple cartridge in accordance with at least one embodiment; FIG. 12 is a partial cross-sectional view of a surgical stapling assembly comprising an anvil, staple cartridge, firing member and firing lockout; 157 is a partial cross-sectional view of the firing member and firing lockout of FIG. 156 shown in an unlocked configuration; FIG. 157 is a partial cross-sectional view of the firing member and firing lockout of FIG. 156 shown in a locked configuration; FIG. 156, wherein the surgical stapling assembly further comprises an external access opening configured to allow a user to manually move the firing lockout to the unlocked configuration with a separate lockout key. FIG. 12 is a partial cross-sectional view of the stapling assembly; 157 is a perspective view of a lockout member of the firing lockout of FIG. 156; FIG. FIG. 12 is a partial cross-sectional view of a surgical stapling assembly including a lockout and an external access orifice configured to allow a user to manually move the firing lockout to an unlocked configuration with a separate lockout key; is. 162 is a bottom view of the surgical stapling assembly of FIG. 161; FIG. FIG. 22 is a partial cross-sectional view of a surgical stapling assembly comprising a firing member, a cartridge channel, a staple cartridge configured to be installed within the cartridge channel, and a lockout, the lockout shown in a disengaged configuration; It is 164 is a partial cross-sectional view of the surgical stapling instrument of FIG. 163 showing the lockout in the engaged configuration; FIG. FIG. 12 includes an elevational view of two staple cartridges each containing a different lockout key; FIG. 166 is a graph showing knife lift timing provided by respective lockout keys of the staple cartridge of FIG. 165; 166 is a graph showing knife lift displacement provided by each lockout key of the staple cartridge of FIG. 165; 1 is a perspective view of a first staple cartridge for use with a surgical stapling system, the first staple cartridge comprising a cartridge body, a pan, a sled, and a first lockout key; FIG. A second staple cartridge for use with a surgical stapling system used with the first staple cartridge of FIG. 168, comprising a cartridge body, a pan, a sled, and a second lockout key. FIG. 12 is a perspective view of a second staple cartridge comprising; 1 is an elevational view of a surgical stapling assembly comprising a firing member, a first jaw including a staple cartridge, a second jaw including an anvil movable relative to the first jaw, and a lockout. It is a diagram. 171 is another perspective view of the surgical stapling assembly of FIG. 170; FIG. 171 is a partial elevational view of the surgical stapling assembly of FIG. 170 without the staple cartridge mounted within the first jaw; FIG. 171 is a partial elevational view of the surgical stapling assembly of FIG. 170 with a staple cartridge mounted within the first jaw; FIG. 171 is a partial cross-sectional view of the surgical stapling assembly of FIG. 170 with the staple cartridge mounted within the first jaw and the firing member in the unfired position; FIG. 171 is a partial cross-sectional view of the surgical stapling assembly of FIG. 170 with the staple cartridge mounted within the first jaw and the firing member in a partially fired position; FIG. 171 is a partial cross-sectional view of the surgical stapling assembly of FIG. 170 without the staple cartridge installed within the first jaw and with the firing member in the unfired position; FIG. 171 is a partial cross-sectional view of the surgical stapling assembly of FIG. 170 without the staple cartridge installed within the first jaw and the firing member in the locked position; FIG. 171 is a partial elevational view, with some components in hidden lines, of the surgical stapling assembly of FIG. 170 with the staple cartridge mounted within the first jaw and the firing member in a partially fired position; FIG. is indicated. 171 is a perspective view of the staple cartridge of the surgical stapling assembly of FIG. 170 including a lockout key extending from its proximal end; FIG. FIG. 180 is a partial plan view of the staple cartridge of FIG. 179; 180 is a partial plan view of a second staple cartridge configured for use with a system including the staple cartridge of FIG. 179, wherein the second staple cartridge has a different lockout key than the lockout key of the staple cartridge of FIG. 179; FIG. Including out key.

Corresponding reference characters indicate corresponding parts throughout the drawings. The exemplifications set forth herein are illustrative of various embodiments of the invention in one form and such exemplifications should not be construed as limiting the scope of the invention in any way. do not have.

The applicant of this application owns the following US patent applications filed on even date herewith, each of which is hereby incorporated by reference in their entirety.
- U.S. Patent Application entitled "METHODS FOR CONTROLLING A POWERED SURGICAL STAPLER THAT HAS SEPARATE ROTARY CLOSURE AND FIRRING SYSTEMS", Attorney Docket No. END9020USNP1/180504-1M,
- U.S. Patent Application entitled "STAPLE CARTRIDGE COMPRISING A LOCKOUT KEY CONFIGURED TO LIFT A FIRING MEMBER", Attorney Docket No. END9021USNP1/180505-1,
- US patent application entitled "SURGICAL STAPLERS WITH ARRANGEMENTS FOR MAINTAINING A FIRING MEMBER THEREOF IN A LOCKED CONFIGURATION UNLESS A COMPATIBLE CARTRIDGE HAS BEEN INSTAL LED THEREIN", agent reference number END9021USNP2/180505-2,
- US patent application entitled "SURGICAL INSTRUMENT COMPRISING CO-OPERATING LOCKOUT FEATURES", Attorney Docket No. END9021USNP3/180505-3,
- U.S. Patent Application entitled "SURGICAL STAPLING ASSEMBLY COMPRISING A LOCKOUT AND AN EXTERIOR ACCESS ORIFICE TO PERMIT ARTIFICIAL UNLOCKING OF THE LOCKOUT", Attorney Docket No. END9021 USNP 4/180505-4,
- US patent application entitled "SURGICAL STAPLING DEVICES WITH FEATURES FOR BLOCKING ADVANCEMENT OF A CAMTING ASSEMBLY OF AN INCOMPATIBLE CARTRIDGE INSTALLED THEREIN", Attorney Docket No. END9021US NP5/180505-5,
- US patent application entitled "SURGICAL INSTRUMENT COMPRISING A JAW CLOSURE LOCKOUT", Attorney Docket No. END9021USNP7/180505-7,
- US patent application entitled "SURGICAL STAPLING DEVICES WITH CARTRIDGE COMPATIBLE CLOSURE AND FIRRING LOCKOUT ARRANGEMENTS", Attorney Docket No. END9021USNP8/180505-8,
- U.S. Patent Application entitled "SURGICAL STAPLE CARTRIDGE WITH FIRING MEMBER DRIVEN CAMMING ASSEMBLY THAT HAS AN ONBOARD TISSUE CUTTING FEATURE", Attorney Docket No. END9022USNP1/180508-1,
- US patent application entitled "SURGICAL STAPLING DEVICES WITH IMPROVED ROTARY DRIVEN CLOURE SYSTEMS", Attorney Docket No. END9022USNP2/180508-2,
- US patent application entitled "SURGICAL STAPLING DEVICES WITH ASYMMETRIC CLOSURE FEATURES", Attorney Docket No. END9022USNP3/180508-3,
- U.S. Patent Application entitled "ROTARY DRIVEN FIRRING MEMBERS WITH DIFFERENT ANVIL AND CHANNEL ENGAGEMENT FEATURES", Attorney Docket No. END9022USNP4/180508-4; ICE WITH SEPARATE ROTARY DRIVEN CLOSURE AND FIRING SYSTEMS AND FIRING MEMBER THAT ENGAGES BOTH JAWS WHILE FIRING", Attorney Docket No. END9022USNP5/180508-5.

The applicant of this application owns the following US patent applications filed on February 19, 2019, each of which is incorporated herein by reference in its entirety.
- U.S. Provisional Patent Application No. 62/807,310, entitled "METHODS FOR CONTROLLING A POWERED SURGICAL STAPLER THAT HAS SEPARATE ROTARY CLOSURE AND FIRRING SYSTEMS",
- U.S. Provisional Patent Application No. 62/807,319, entitled "SURGICAL STAPLING DEVICES WITH IMPROVED LOCKOUT SYSTEMS"; ROTARY DRIVEN CLOSURE SYSTEMS".

The applicant of this application owns the following US provisional patent applications filed March 28, 2018, the entire contents of each of which are incorporated herein by reference:
- US Provisional Patent Application No. 62/649,302, entitled "INTERACTIVE SURGICAL SYSTEMS WITH ENCRYPTED COMMUNICATION CAPABILITIES",
- US Provisional Patent Application No. 62/649,294, entitled "DATA STRIPING METHOD TO INTERROGATE PATIENT RECORDS AND CREATE ANONYMIZED RECORD",
- U.S. Provisional Patent Application No. 62/649,300, entitled "SURGICAL HUB SITUATIONAL AWARENESS";
- US Provisional Patent Application No. 62/649,309, entitled "SURGICAL HUB SPATIAL AWARENESS TO DETERMINE DEVICES IN OPERATING THEATER",
- US Provisional Patent Application No. 62/649,310, entitled "COMPUTER IMPLEMENTED INTERACTIVE SURGICAL SYSTEMS",
- U.S. Provisional Patent Application No. 62/649,291 entitled "USE OF LASER LIGHT AND RED-GREEN-BLUE COLORATION TO DETERMINE PROPERTIES OF BACK SCATTERED LIGHT",
- US Provisional Patent Application No. 62/649,296, entitled "ADAPTIVE CONTROL PROGRAM UPDATES FOR SURGICAL DEVICES",
- US Provisional Patent Application No. 62/649,333, entitled "CLOUD-BASED MEDICAL ANALYTICS FOR CUSTOMIZATION AND RECOMMENDATIONS TO A USER",
- US Provisional Patent Application No. 62/649,327, entitled "CLOUD-BASED MEDICAL ANALYTICS FOR SECURITY AND AUTHENTICATION TRENDS AND REACTIVE MEASURES";
- US Provisional Patent Application No. 62/649,315, entitled "DATA HANDLING AND PRIORITIZATION IN A CLOUD ANALYTICS NETWORK",
- US Provisional Patent Application No. 62/649,313, entitled "CLOUD INTERFACE FOR COUPLED SURGICAL DEVICES",
- US Provisional Patent Application No. 62/649,320, entitled "DRIVE ARRANGEMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS",
- U.S. Provisional Patent Application No. 62/649,307, entitled "AUTOMATIC TOOL ADJUSTMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS," and - U.S. Provisional Patent Application No. 62/649,323, entitled "SENSING ARRANGEMENTS FOR ROB." OT - Assisted Surgical Platforms".

The applicant of this application owns the following US provisional patent application filed March 30, 2018, which is hereby incorporated by reference in its entirety:
- US Provisional Patent Application No. 62/650,887, entitled "SURGICAL SYSTEMS WITH OPTIMIZED SENSING CAPABILITIES".

The applicant of this application owns the following US provisional patent application filed December 4, 2018, which is hereby incorporated by reference in its entirety:
- U.S. patent application Ser. .

The applicant of the present application owns the following US patent applications filed Aug. 20, 2018, each of which is incorporated herein by reference in its entirety.
- US patent application Ser. No. 16/105,101 entitled "METHOD FOR FABRICATING SURGICAL STAPLER ANVILS",
- US patent application Ser. No. 16/105,183, entitled "REINFORCED DEFORMABLE ANVIL TIP FOR SURGICAL STAPLER ANVIL"
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. G DRIVE SYSTEM",
- U.S. patent application Ser.
- US Patent Application No. 16/105160, entitled "SWITCHING ARRANGEMENTS FOR MOTOR POWERED ARTICULATABLE SURGICAL INSTRUMENTS";

The applicant of the present application owns the following US patent applications and US patents, each of which is incorporated herein by reference in its entirety.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. AND ARTICULATION AND FIRING SYSTEMS, now U.S. Patent Application Publication No. 2018/0168630;
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. is U.S. Patent Application No. 2018/0168641;
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. /0168615,
- U.S. patent application Ser.
- U.S. patent application Ser. 018/0168626,
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- US patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. No. 9,
- U.S. patent application Ser. /0168590,
- U.S. patent application Ser.
- U.S. patent application Ser. 2018/0168592,
- U.S. patent application Ser. EM, now U.S. Patent Application Publication No. 2018/0168593;
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. 8621,
- US patent application Ser.
- U.S. patent application Ser. TRIDGE IS INSTALLED IN THE END EFFECTOR, now a published US patent application 2018/0168576,
- U.S. patent application Ser. No. 77,
- U.S. patent application Ser. 018/0168578,
- U.S. patent application Ser. 8/0168579,
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. YSTEM”, now U.S. Patent Application Publication No. 2018/0168581 ,
- U.S. patent application Ser. URATION, now U.S. Patent Application Publication No. 2018/0168582;
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- US Patent Application No. 14/319,013, entitled "FASTENER CARTRIDGE ASSEMBLIES AND STAPLE RETAINER COVER ARRANGEMENTS", now US Patent Application Publication No. 2015/0297233, and - US Patent Application No. 14/319,016. , entitled "FASTENER CARTRIDGE INCLUDING A LAYER ATTACHED THERETO", now U.S. Patent Application Publication No. 2015/0297235.

The applicant of the present application owns the following US patent applications filed June 24, 2016, each of which is hereby incorporated by reference in its entirety:
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. Title: "STAPLE CARTRIDGE COMPRISING OFFSET LONGITUDINAL STAPLE ROWS", now U.S. Patent Application Publication No. 2017/0367697.

The applicant of the present application owns the following US patent applications filed June 24, 2016, each of which is hereby incorporated by reference in its entirety:
- US Design Patent Application No. 29/569,218, entitled "SURGICAL FASTENER", now US Design Patent No. D826,405;
- US Design Patent Application No. 29/569,227, entitled "SURGICAL FASTENER", now US Design Patent No. D822,206;
- US Design Patent Application No. 29/569,259, entitled "SURGICAL FASTENER CARTRIDGE," and - US Design Patent Application No. 29/569,264, entitled "SURGICAL FASTENER CARTRIDGE."

The applicant of the present application owns the following patent applications filed on April 1, 2016, the entire contents of each of which are incorporated herein by reference:
- U.S. patent application Ser.
- U.S. Patent Application No. 15/089,321, entitled "MODULAR SURGICAL STAPLING SYSTEM COMPRISING A DISPLAY", now U.S. Patent Application Publication No. 2017/0281163,
- U.S. patent application Ser.
- US patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. Application Publication No. 2017/0281168,
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. Patent Application No. 15/089,312 entitled "CIRCULAR STAPLING SYSTEM COMPRISING AN INCISABLE TISSUE SUPPORT", now U.S. Patent Application Publication No. 2017/0281189;
- US Patent Application No. 15/089,309, entitled "CIRCULAR STAPLING SYSTEM COMPRISING ROTARY FIRING SYSTEM", now US Patent Application Publication No. 2017/0281169, and - US Patent Application No. 15/089,349, Title of Invention "CIRCULAR STAPLING SYSTEM COMPRISING LOAD CONTROL", now U.S. Patent Application Publication No. 2017/0281174.

The applicant of the present application also owns the following identified US patent applications filed December 31, 2015, each of which is hereby incorporated by reference in its entirety.
- U.S. patent application Ser.
- U.S. patent application Ser. 552, entitled "SURGICAL INSTRUMENTS WITH SEPARABLE MOTORS AND MOTOR CONTROL CIRCUITS," now U.S. Patent Application Publication No. 2017/0189020.

The applicant of the present application also owns the following identified US patent applications filed February 9, 2016, each of which is hereby incorporated by reference in its entirety.
- U.S. patent application Ser.
- U.S. patent application Ser.
- US patent application Ser.
- U.S. patent application Ser. 4331,
- U.S. patent application Ser.
- US patent application Ser.
- U.S. patent application Ser.
- U.S. Patent Application No. 15/019,230, entitled "ARTICULATABLE SURGICAL INSTRUMENTS WITH OFF-AXIS FIRING BEAM ARRANGEMENTS," now U.S. Patent Application Publication No. 2017/0224335; 245, entitled "SURGICAL INSTRUMENTS WITH CLOSURE STROKE REDUCTION ARRANGEMENTS," now U.S. Patent Application Publication No. 2017/0224343.

The applicant of the present application also owns the following identified US patent applications filed February 12, 2016, each of which is hereby incorporated by reference in its entirety.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. 289, entitled "MECHANISMS FOR COMPENSATING FOR DRIVE TRAIN FAILURE IN POWERED SURGICAL INSTRUMENTS," now U.S. Patent Application Publication No. 2017/0231628.

The applicant of the present application owns the following patent applications filed Jun. 18, 2015, each of which is hereby incorporated by reference in its entirety.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. U.S. Patent Application Publication No. 2016/0367254,
- U.S. patent application Ser. No., entitled "PUSH/PULL ARTICULATION DRIVE SYSTEMS FOR ARTICULATABLE SURGICAL INSTRUMENTS," now U.S. Pat. No. 10,178,992.

The applicant of the present application owns the following patent applications filed March 6, 2015, the entire contents of each of which are incorporated herein by reference:
- US patent application Ser. No. 14/640,746, entitled "POWERED SURGICAL INSTRUMENT", now US Pat.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. ,
- US patent application Ser. No. 14/640,837, entitled "SMART SENSORS WITH LOCAL SIGNAL PROCESSING", now US Pat.
- U.S. patent application Ser.
- US Patent Application No. 14/640,799, entitled "SIGNAL AND POWER COMMUNICATION SYSTEM POSITIONED ON A ROTATABLE SHAFT", now US Patent No. 9,901,342, and - US Patent Application No. 14/640, 780, entitled "SURGICAL INSTRUMENT COMPRISING A LOCKABLE BATTERY HOUSING," now U.S. Patent Application Publication No. 2016/0256161.

The applicant of this application owns the following patent applications filed on February 27, 2015, the entire contents of each of which are incorporated herein by reference:
- U.S. patent application Ser.
- U.S. patent application Ser. D", now U.S. Pat. No. 10,180,463,
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- US patent application Ser. No. 14/633,541, entitled "MODULAR STAPLING ASSEMBLY," now US Pat. SURGICAL APPARATUS CONFIGURED TO TRACK AN END-OF-LIFE PARAMETER, now US Pat. No. 10,159,483.

The applicant of the present application owns the following patent applications filed December 18, 2014, the entire contents of each of which are incorporated herein by reference:
- U.S. patent application Ser. Currently US Pat. No. 9,844,374,
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. No. 2016/0174972 ,
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- US Patent Application No. 14/574,493, entitled "SURGICAL INSTRUMENT ASSEMBLY COMPRISING A FLEXIBLE ARTICULATION SYSTEM", now US Patent No. 9,987,000, and - US Patent Application No. 14/574,500 , entitled "SURGICAL INSTRUMENT ASSEMBLY COMPRISING A LOCKABLE ARTICULATION SYSTEM", now U.S. Patent No. 10,117,649.

The applicant of the present application owns the following patent applications filed March 1, 2013, the entire contents of each of which are incorporated herein by reference:
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- US Patent Application No. 13/782,375, entitled "ROTARY POWERED SURGICAL INSTRUMENTS WITH MULTIPLE DEGREES OF FREEDOM", now US Patent No. 9,398,911, and - US Patent Application No. 13/782,536. No., entitled "SURGICAL INSTRUMENT SOFT STOP", now U.S. Pat. No. 9,307,986.

The applicant of the present application also owns the following patent applications filed March 14, 2013, the entire contents of each of which are incorporated herein by reference:
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- US Patent Application No. 13/803,130, entitled "DRIVE TRAIN CONTROL ARRANGEMENTS FOR MODULAR SURGICAL INSTRUMENTS", now US Patent No. 9,351,727, and - US Patent Application No. 13/803,159. , entitled "METHOD AND SYSTEM FOR OPERATING A SURGICAL INSTRUMENT", now U.S. Patent No. 9,888,919.

The applicant of this application also owns the following patent applications filed on March 7, 2014, the entire contents of which are incorporated herein by reference:
- US patent application Ser. No. 14/200,111, entitled "CONTROL SYSTEMS FOR SURGICAL INSTRUMENTS," now US Pat.

The applicant of the present application also owns the following patent applications filed on Mar. 26, 2014, the entire contents of each of which are incorporated herein by reference:
- U.S. patent application Ser.
- U.S. Patent Application No. 14/226,099 entitled "STERILIZATION VERIFICATION CIRCUIT", now U.S. Pat.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- US patent application Ser. No. 14/226,133, entitled "MODULAR SURGICAL INSTRUMENT SYSTEM", now US patent application publication no.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. SURGICAL INSTRUMENT COMPRISING A ROTATABLE SHAFT, now U.S. Patent Application Publication No. 2015/0280384.

The applicant of this application also owns the following patent applications filed on September 5, 2014, the entire contents of each of which are incorporated herein by reference:
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- US Patent Application No. 14/479,115, entitled "MULTIPLE MOTOR CONTROL FOR POWERED MEDICAL DEVICE", now US Patent No. 9,788,836, and - US Patent Application No. 14/479,108, Title of Invention "LOCAL DISPLAY OF TISSUE PARAMETER STABILIZATION", now US Patent Application Publication No. 2016/0066913.

The applicant of this application also owns the following patent applications filed on April 9, 2014, the entire contents of each of which are incorporated herein by reference:
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser. SHAFTS, now U.S. Pat. No. 9,801,626;
- US patent application Ser. No. 14/248,587, entitled "POWERED SURGICAL STAPLER", now US Pat.
- US Patent Application No. 14/248,586, entitled "DRIVE SYSTEM DECOUPLING ARRANGEMENT FOR A SURGICAL INSTRUMENT", now US Patent No. 10,136,887, and - US Patent Application No. 14/248,607. , entitled "MODULAR MOTOR DRIVEN SURGICAL INSTRUMENTS WITH STATUS INDICATION ARRANGEMENTS", now U.S. Patent No. 9,814,460.

The applicant of this application also owns the following patent applications filed on April 16, 2013, the entire contents of each of which are incorporated herein by reference:
- US Provisional Patent Application No. 61/812,365, entitled "SURGICAL INSTRUMENT WITH MULTIPLE FUNCTIONS PERFORMED BY A SINGLE MOTOR";
- US Provisional Patent Application No. 61/812,376, entitled "LINEAR CUTTER WITH POWER",
- US Provisional Patent Application No. 61/812,382, entitled "LINEAR CUTTER WITH MOTOR AND PISTOL GRIP",
- U.S. Provisional Application No. 61/812,385, entitled "SURGICAL INSTRUMENT HANDLE WITH MULTIPLE ACTUATION MOTORS AND MOTOR CONTROL," and - U.S. Provisional Application No. 61/812,372, entitled "SURGICAL INSTRUMENT WIT." H. MULTIPLE FUNCTIONS PERFORMED BY A SINGLE MOTOR".

Numerous specific details are set forth in the specification to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. Well-known operations, components and elements have not been described in detail so as not to obscure the embodiments described herein. The reader is advised that the embodiments described and illustrated herein are non-limiting examples, and thus specific structural and functional details disclosed herein may be representative and exemplary. you will understand. Variations and changes can be made thereto without departing from the scope of the claims.

The terms "comprise" (any form of comprise, such as "comprises" and "comprising"), "have" (any form of have, such as "has" and "having"), "comprise ( "include" (any form of include, such as "includes" and "including") and "contain" (any form of contain, such as "contains" and "containing") refer to open-ended linkages. is a verb. As a result, a surgical system, device, or apparatus that “comprises,” “has,” “includes,” or “contains” one or more elements may have, but are not limited to having only one or more of them. Similarly, an element of a system, device, or apparatus that “comprises,” “has,” “includes,” or “contains” one or more features may refer to those one or more features. have, but are not limited to having only one or more of those features.

The terms "proximal" and "distal" are used herein with reference to the clinician manipulating the handle portion of the surgical instrument. The term "proximal" refers to the portion closest to the clinician and the term "distal" refers to the portion located farther from the clinician. It will further be appreciated that for convenience and clarity, spatial terms such as "vertical," "horizontal," "above," and "below" may be used herein with respect to the drawings. However, surgical instruments are used in many orientations and positions, and these terms are not intended to be limiting and/or absolute.

Various exemplary devices and methods are provided for performing laparoscopic and minimally invasive surgical procedures. However, the reader will readily appreciate that the various methods and devices disclosed herein can be used in many surgical procedures and applications, including, for example, those associated with open surgical procedures. By reading through the Detailed Description of the Invention herein, the reader will understand that the various instruments disclosed herein can be used to circulate an incision made in tissue, for example, through a pre-existing opening. It will further be appreciated that it may be inserted into the body in any manner, such as through an opening or puncture. The working or end effector portion of these instruments can be inserted directly into the patient's body or through an access device having a working channel through which the end effector and elongated shaft of the surgical instrument can be advanced. can also

A surgical stapling system can include a shaft and an end effector extending from the shaft. The end effector includes a first jaw and a second jaw. The first jaw includes a staple cartridge. The staple cartridge is insertable into and removable from the first jaw, but the staple cartridge is not removable from the first jaw, or at least Other embodiments are envisioned that are not readily replaceable. The second jaw includes an anvil configured to deform staples ejected from the staple cartridge. the second jaw is pivotable with respect to the first jaw about the closing axis, but the first jaw is pivotable with respect to the second jaw, etc. Embodiments are envisaged. The surgical stapling system further includes an articulation joint configured to rotate or articulate the end effector with respect to the shaft. The end effector is rotatable about an articulation axis that extends through the articulation joint. Other embodiments are also envisioned that do not include articulation joints.

The staple cartridge includes a cartridge body. The cartridge body includes a proximal end, a distal end, and a deck portion extending between the proximal and distal ends. In use, the staple cartridge is positioned on a first side of the tissue to be stapled and the anvil is positioned on a second side of the tissue. The anvil is moved toward the staple cartridge to compress and clamp tissue against the deck. Staples removably stored within the cartridge body can then be deployed into tissue. The cartridge body includes a staple cavity defined therein, and the staples are removably stored within the staple cavity. The staple cavities are arranged in six longitudinal rows. Three rows of staple cavities are positioned on the first side of the longitudinal slot and three rows of staple cavities are positioned on the second side of the longitudinal slot. Other arrangements of staple cavities and staples may also be possible.

The staples are supported by a staple driver within the cartridge body. The drive is movable between a first or unfired position and a second or fired position that ejects staples from the staple cavities. The drive portion is retained within the cartridge body by a retainer extending around the bottom of the cartridge body and includes a resilient member configured to grip the cartridge body and hold the retainer to the cartridge body. include. The drives are movable between their unfired and their fired positions by a sled. The sled is movable between a proximal position adjacent to the proximal end and a distal position adjacent to the distal end. The sled includes a plurality of angled surfaces configured to slide under and lift the drive, with staples supported thereon toward the anvil.

In addition to the above, the sled is moved distally by the firing member. A firing member is configured to contact the sled and push the sled toward the distal end. A longitudinal slot defined within the cartridge body is configured to receive the firing member. The anvil also includes a slot configured to receive the firing member. The firing member further includes a first cam that engages the first jaw and a second cam that engages the second jaw. In advancing the firing member distally, the first cam and the second cam can control the distance between the deck portion of the staple cartridge and the anvil, ie, the tissue gap. The firing member also includes a knife configured to cut tissue captured intermediate the staple cartridge and the anvil. Desirably, the knife is positioned at least partially proximal to the ramp so that the staples are ejected forward of the knife.

FIG. 1 shows surgical instrument 1010 including interchangeable shaft assembly 1200 operably coupled to housing 1012 . FIG. 2 shows replaceable shaft assembly 1200 removed from housing 1012 or handle 1014 . As shown in FIG. 3, handle 1014 may comprise a pair of interconnectable handle housing segments 1016 and 1018 that may be interconnected with screws, snap mechanisms, adhesives, or the like. In the illustrated configuration, handle housing segments 1016 , 1018 cooperate to form pistol grip portion 1019 . 1 and 3 show a motorized surgical cutting and fastening instrument 1010 that may or may not be reused. In the illustrated embodiment, the instrument 1010 includes the housing 1012 described above with a handle 1014 configured to be grasped, manipulated and actuated by a clinician. Housing 1012 is configured to operably attach to replaceable shaft assembly 1200 to which surgical end effector 1300 configured to perform one or more surgical tasks or procedures is operably coupled. As the Detailed Description of the Invention progresses, it will be appreciated that the various forms of interchangeable shaft assemblies disclosed herein can also be effectively used in conjunction with robotic surgical systems. be understood. Accordingly, the term "housing" is also configured to generate and apply at least one control motion that can be used to actuate the interchangeable shaft assemblies disclosed herein and their respective equivalents. may include a housing or similar portion of the robotic system that houses or otherwise operably supports at least one drive system. Additionally, various components may be "housed" or contained within the housing, or various components may be "associated with" the housing. In such instances, the components may not be contained within or directly supported by the housing. The term "frame" may refer to a portion of a handheld surgical instrument. The term "frame" may also refer to a portion of a robotically controlled surgical instrument and/or a portion of a robotic system that may be used to operably control the surgical instrument. For example, the replaceable shaft assembly disclosed herein is disclosed in U.S. Pat. No. 9,072,535, entitled "SURGICAL STAPLING INSTRUMENTS WITH ROTATABLE STAPLE DEPLOYMENT ARRANGEMENTS," which is hereby incorporated by reference in its entirety. It may be used with the various robotic systems, instruments, components, and methods disclosed.

The above-described housing 1012 depicted in FIG. 1 includes a replaceable shaft assembly 1200 (FIG. 12) including an end effector 1300 comprising a surgical cutting and fastening device configured to operably support a surgical staple cartridge 4000 therein. 2, FIGS. 4 and 5). The housing 1012 includes end effectors adapted to support various sizes and types of staple cartridges, for use in connection with interchangeable shaft assemblies having various shaft lengths, sizes, types, etc. may be configured to Additionally, the housing 1012 is also adapted for use with, for example, motion and other forms of energy such as radio frequency (RF) energy, ultrasonic energy and/or motion in connection with various surgical applications and procedures. It may be effectively used in connection with a variety of other interchangeable shaft assemblies, including assemblies configured to apply a modified end effector configuration. Additionally, the end effector, shaft assembly, handle, surgical instrument, and/or surgical instrument system may utilize any suitable fastener capable of being grasped and manipulated by a clinician. As will be described in more detail below, the handle 1014 operably supports therein a plurality of drive systems which are corresponding portions of interchangeable shaft assemblies operably attached to the handle. is configured to generate and apply various control motions to

Referring now to FIG. 3, the handle 1014 may further include a frame 1020 that operably supports multiple drive systems. For example, frame 1020 may operably support a "first" or closure drive system, generally indicated at 1030, which may be operably attached or coupled to interchangeable shafts. It may be used to apply opening and closing motions to the assembly 1200 . In at least one form, closure drive system 1030 may include an actuator in the form of closure trigger 1032 pivotally supported by frame 1020 . More specifically, as shown in FIG. 3, closure trigger 1032 is pivotally coupled to handle 1014 by pin 1033 . Such a configuration allows the closure trigger 1032 to be manipulated by the clinician such that when the clinician grasps the pistol grip portion 1019 of the handle 1014, the closure trigger 1032 is moved from the starting or "deactivated" position. It can be easily pivoted to an "actuated" position, more particularly to a fully compressed or fully actuated position. Closure trigger 1032 may be biased to the unactuated position by a spring or other biasing device (not shown). In various forms, closure drive system 1030 further includes closure linkage assembly 1034 pivotally coupled to closure trigger 1032 . As shown in FIG. 3 , closure linkage assembly 1034 may include first closure link 1036 and second closure link 1038 pivotally coupled to closure trigger 1032 by pin 1035 . A second closure link 1038 , sometimes referred to herein as an “attachment member,” includes a transverse attachment pin 1037 .

With continued reference to FIG. 3 , first closure link 1036 has a locking wall or end 1039 thereon configured to cooperate with closure release assembly 1060 pivotally coupled to frame 1020 . You can observe what you can do. In at least one form, the closure release assembly 1060 may comprise a release button assembly 1062 having a distally projecting locking pawl 1064 formed thereon. Release button assembly 1062 may be pivoted counterclockwise by a release spring (not shown). When the clinician depresses the closure trigger 1032 from its unactuated position toward the pistol grip portion 1019 of the handle 1014, the locking pawl 1064 moves toward a point into retaining engagement with the locking wall 1039 on the first closure link 1036. , pivots the first closure link 1036 upward, thereby preventing the closure trigger 1032 from returning to the unactuated position. Closure release assembly 1060 thus serves to lock closure trigger 1032 in the fully actuated position. When the clinician wishes to unlock the closure trigger 1032 so that it can be biased to the unactuated position, the clinician simply pivots the release button assembly 1062, thereby locking the locking pawl 1064. out of engagement with locking wall 1039 on first closure link 1036 . When the locking pawl 1064 is moved out of engagement with the first closure link 1036, the closure trigger 1032 may pivot back to the unactuated position. Other closure trigger lock and release configurations may be used.

An arm 1061 may extend from release button assembly 1062 . A magnetic element 1063 , for example a permanent magnet, may be attached to the arm 1061 . Rotating release button assembly 1062 from its first position to its second position allows magnetic element 1063 to move toward circuit board 1100 . Circuit board 1100 can include at least one sensor configured to detect movement of magnetic element 1063 . In at least one embodiment, for example, a “Hall Effect” sensor (not shown) can be attached to the bottom surface of circuit board 1100 . A Hall effect sensor may be configured to detect changes in the magnetic field surrounding the Hall effect sensor caused by movement of magnetic element 1063 . A Hall effect sensor, for example, can be in signal communication with a microcontroller such that the release button assembly 1062 is in its first position associated with the unactuated position of the closure trigger 1032 and the open configuration of the end effector. in its second position associated with the actuated position of the closure trigger 1032 and the closed configuration of the end effector, and/or in any position between the first and second positions. can determine if there is

In at least one form, the handle 1014 and frame 1020 are configured to apply a firing motion to a corresponding portion of the attached interchangeable shaft assembly, referred to herein as a firing drive system 1080. A drive system may be operatively supported. Firing drive system 1080 may also be referred to herein as the "second drive system." Firing drive system 1080 may employ electric motor 1082 located within pistol grip portion 1019 of handle 1014 . In various forms, motor 1082 may be, for example, a brushed DC drive motor having a maximum speed of approximately 25,000 RPM. In other configurations, the motor may include a brushless motor, cordless motor, synchronous motor, stepper motor, or any other suitable electric motor. Motor 1082 may be powered by power supply 1090 and in one form may include a removable power pack 1092 . For example, as seen in FIG. 3, power pack 1092 may include proximal housing portion 1094 configured to attach to distal housing portion 1096 . Proximal housing portion 1094 and distal housing portion 1096 are configured to operably support a plurality of batteries 1098 therein. Batteries 1098 may each include, for example, lithium ion (LI) or other suitable batteries. Distal housing portion 1096 is configured to be removably and operably attached to circuit board 1100 which is also operably coupled to motor 1082 . Multiple batteries 1098 , which may be connected in series, may be used as a power source for surgical instrument 1010 . Additionally, power source 1090 may be replaceable and/or rechargeable.

Electric motor 1082 is gear mounted in meshing engagement with a set or rack of drive teeth 1122 on longitudinally movable drive member 1120, as outlined above in connection with various other configurations. A rotatable shaft (not shown) may be included in operative association with reducer assembly 1084 . In use, the voltage polarity provided by power supply 1090 may cause electric motor 1082 to operate in a clockwise direction, whereas the voltage polarity applied to electric motor 1082 by the battery may cause electric motor 1082 to operate in a counterclockwise direction. can be flipped to As electric motor 1082 is rotated in one direction, drive member 1120 will be axially driven in distal direction “DD”. When the motor 82 is driven in the opposite rotational direction, the drive member 1120 will be axially driven in the proximal direction "PD". Handle 1014 may include a switch that may be configured to reverse the polarity applied to electric motor 1082 by power supply 1090 . As with other versions described herein, handle 1014 may also include sensors configured to detect the position of drive member 1120 and/or the direction in which drive member 1120 is being moved. can be done.

Actuation of motor 1082 may be controlled by a firing trigger 1130 pivotally supported on handle 1014 . Firing trigger 1130 may pivot between an unactuated position and an actuated position. Firing trigger 1130 may be biased to an unactuated position by spring 1132 or other biasing device such that when the clinician releases firing trigger 1130, it is deactivated by spring 1132 or other biasing device. It may be pivoted into position or otherwise returned. In at least one form, the firing trigger 1130 can be positioned "outside" the closing trigger 1032, as described above. In at least one form, firing trigger safety button 1134 may be pivotally attached to closure trigger 1032 by pin 1035 . A safety button 1134 may be positioned between the firing trigger 1130 and the closing trigger 1032 and have a pivot arm 1136 projecting therefrom. See FIG. When the closure trigger 1032 is in the unactuated position, the safety button 1134 is housed in the handle 1014 and is not readily accessible to the clinician, a safety position that prevents actuation of the firing trigger 1130 and that the firing trigger 1130 is It cannot be moved to or from a firing position where it may be fired. When the clinician depresses the closure trigger 1032, the safety button 1134 and firing trigger 1130 pivot down, allowing them to then be manipulated by the clinician.

As shown above, in at least one form the longitudinally movable drive member 1120 has teeth 1122 formed thereon for meshing engagement with a corresponding drive gear 1086 of the gear reducer assembly 1084 . of racks. At least one form also includes a manually actuated "emergency detachment" configured to allow a clinician to manually retract the longitudinally movable drive member 1120 when the motor 1082 is disabled. ” assembly 1140 . Emergency release assembly 1140 may include a lever or emergency release handle assembly 1142 configured to be manually pivoted into ratchet engagement with teeth 1124 also provided on drive member 1120 . Accordingly, the clinician can manually retract drive member 1120 by ratcheting drive member 1120 proximally “PD” using emergency disengagement handle assembly 1142 . U.S. Pat. No. 8,608,045, entitled "POWERED SURGICAL CUTTING AND STAPLING APPARATUS WITH MANUALLY RETRACTABLE FIRRING SYSTEM," may be used with an emergency release device, as well as various instruments also disclosed herein. components, devices, and systems of. US Pat. No. 8,608,045 is incorporated herein by reference in its entirety.

2 and 5, replaceable shaft assembly 1200 includes surgical end effector 1300 including elongated channel 1310 configured to operably support staple cartridge 4000 therein. End effector 1300 may further include an anvil 2000 pivotally supported relative to elongate channel 1310 . Interchangeable shaft assembly 1200 may further include articulation joint 3020 and articulation lock 2140 that may be configured to releasably retain end effector 1300 in a desired position relative to shaft axis SA. Various example features of the form of at least one of the end effector 1300, the articulation joint 3020, and the articulation lock are described in U.S. patent application Ser. INSTRUMENT COMPRISING AN ARTICULATION LOCK," current U.S. Patent Application Publication No. 2014/0263541. US patent application Ser. incorporated into the specification. As seen in FIG. 4, replaceable shaft assembly 1200 can further include a proximal housing or nozzle 1201 comprised of nozzle portions 1202 and 1203. As shown in FIG.

Interchangeable shaft assembly 1200 can further include closure tube 3000 that can be utilized to open and close anvil 2000 of end effector 1300 . Shaft assembly 1200 may include a spine 1210 that (1) slidably supports a firing member therein and (2) is slidable for closure member assembly 3000 extending thereabout. is configured to support As shown in FIG. 5, distal end 1212 of spine 1210 terminates in upper lug attachment mechanism 1270 and lower lug attachment mechanism 1280 . The interior of the upper lug attachment mechanism 1270 is formed with a lug slot 1272 in which an upper attachment link 1274 can be fixedly supported. Similarly, the interior of the lower lug attachment mechanism 1280 is formed with a lug slot 1282 capable of fixedly supporting a lower attachment link 1284 therein. The upper mounting link 1274 has a pivot socket 1276 therein capable of rotatably receiving a pivot pin 1292 formed on a channel cap or anvil retainer 1290 attached to the proximal end portion 1312 of the elongated channel 1310 . include. Lower attachment link 1284 includes a lower pivot pin 1286 receivable within pivot hole 1314 formed in proximal end portion 1312 of elongated channel 1310 . Please refer to FIG. Lower pivot pin 1286 is vertically aligned with pivot socket 1276 to define an articulation axis AA about which surgical end effector 1300 may articulate relative to shaft axis SA. Please refer to FIG.

In the illustrated example, surgical end effector 1300 is selectively articulatable about articulation axis AA by articulation system 2100 . In one form, articulation system 2100 includes a proximal articulation drive 2102 pivotally coupled to articulation link 2120 . An offset mounting lug 2114 is formed at the distal end 2110 of the proximal articulation drive 2102, as can be seen most particularly in FIG. A pivot hole 2116 is formed in the offset mounting lug 2114 and is configured to pivotally receive a proximal link pin 2124 formed at the proximal end 2122 of the articulation link 2120 therein. Distal end 2126 of articulation link 2120 includes a pivot hole 2128 configured to pivotally receive channel pin 1317 formed in proximal end portion 1312 of elongated channel 1310 therein. Axial movement of proximal articulation drive 2102 thus imparts articulation to elongate channel 1310 , thereby articulating surgical end effector 1300 relative to spine assembly 1210 about articulation axis AA. Details regarding the construction and operation of the articulation system 2100 are provided in U.S. patent application Ser. INSTRUMENT WITH AXIALLY MOVABLE CLOSURE MEMBER", now found in US Patent Application Publication No. 2019/0000464. In various situations, the proximal joint drive 2102 may be maintained in place by a joint lock 2140 when the proximal joint drive 2102 is not moving proximally or distally. Further details regarding examples of articulation locks 2140 can be found in U.S. Patent Application No. 15/635,631, current U.S. Patent Application Publication No. 2019/0000464, and other references incorporated herein by reference. can be done.

In various circumstances, spine 1210 can include proximal end 1211 that is rotatably supported within chassis 1240 . In one configuration, for example, the proximal end 1211 of the spine 1210 is threaded 1214 to threadably attach to a spine bearing 1216 configured to be supported within the chassis 1240 . Please refer to FIG. Such a configuration facilitates rotatable mounting of the spine 1210 to the chassis 1240 and allows the spine 1210 to be selectively rotated relative to the chassis 1240 about the shaft axis SA.

Referring primarily to FIG. 4, interchangeable shaft assembly 1200 includes closure shuttle 1250 slidably supported therein so as to be axially moveable relative to chassis 1240 . Closure shuttle 1250 includes a pair of proximally projecting hooks 1252 that attach to attachment pins 1037 (FIG. 3) attached to second closure link 1038, as described in greater detail below. It is configured. In at least one example, closure member assembly 3000 includes a proximal closure member segment 3010 having a proximal end 3012 coupled to closure shuttle 1250 for rotation therewith. For example, U-shaped connector 1263 is inserted into annular slot 3014 at proximal end 3012 of proximal closure member segment 3010 and retained within vertical slot 1253 of closure shuttle 1250 . With such a configuration, proximal closure member segment 3010 and closure shuttle 1250 are mounted for axial movement together, while proximal closure member segment 3010 moves relative to closure shuttle 1250 about shaft axis SA. It is possible to rotate A closure spring 1268 is pivoted on the proximal closure member 3010 and serves to bias the proximal closure member 3010 in the proximal direction “PD” thereby operably coupling the shaft assembly to the handle 1014. , can serve to pivot the closure trigger 1032 to the unactuated position.

In at least one form, interchangeable shaft assembly 1200 may further include articulation joint 3020 . However, other interchangeable shaft assemblies may not be articulatable. As shown in FIG. 5, for example, a distal closure member or distal closure tube segment 3030 is coupled to the distal end of the proximal closure member segment 3010 . Articulation joint 3020 includes a dual pivot closure sleeve assembly 3022 . According to various forms, the dual pivot closure sleeve assembly 3022 includes an end effector closure tube 3050 having an upper distal projecting tang 3052 and a lower distal projecting tang 3054 . The upper double pivot link 3056 engages the upper distal pinhole of the upper proximal protruding tongue 3052 and the upper proximal pinhole of the upper distal protruding tongue 3032 on the distal closed tube segment 3030 respectively. , including upwardly projecting distal and proximal pivot pins. The lower double pivot link 3058 is an upwardly projecting distal and proximal link that engages the lower distal pinhole of the lower proximal projecting tang 3054 and the lower proximal pinhole of the lower distal projecting tang 3034 respectively. Includes pivot pin. See FIGS. 4 and 5. FIG. Closure member assembly 3000 is translated distally (direction DD) to close anvil 2000, eg, in response to actuation of closure trigger 1032, as described in more detail below. Anvil 2000 is opened by translating closure member assembly 3000 proximally, which causes end effector closure tube 3050 to interact with anvil 2000 and pivot anvil 2000 to an open position.

As also mentioned above, replaceable shaft assembly 1200 further includes firing member 1900 supported for axial movement within shaft spine 1210 . Firing member 1900 includes an intermediate firing shaft portion 1222 configured to attach to a distal cutting portion or knife bar 1910 . Intermediate firing shaft portion 1222 may include longitudinal slots 1223 at its distal end that may be configured to receive tabs 1912 at the proximal end of distal knife bar 1910 . Longitudinal slot 1223 and proximal end tab 1912 can be sized and configured to allow relative movement therebetween and can include a slip joint 1914 . Slip joint 1914 may allow intermediate firing shaft portion 1222 of firing member 1900 to move to articulate end effector 1300 without moving knife bar 1910, or at least substantially without moving. Once end effector 1300 is properly oriented, intermediate firing shaft portion 1222 is advanced distally until the proximal sidewall of longitudinal slot 1223 contacts tab 1912 to advance knife bar 1910 and channel 1910 . A staple cartridge 4000 located within 1310 can be fired. Knife bar 1910 includes a knife portion 1920 that includes a blade or tissue cutting edge 1922 and includes upper anvil engaging tabs 1924 and lower channel engaging tabs 1926 . The construction and operation of various firing members are disclosed in various other references incorporated herein by reference.

As seen in FIG. 4, shaft assembly 1200 further includes switch drum 1500 rotatably received on proximal closure member segment 3010 . The switch drum 1500 comprises a hollow shaft segment 1502 with a shaft boss formed therein for receiving an outwardly projecting actuation pin. Under various circumstances, the actuation pin extends through the slot into a longitudinal slot provided in the locking sleeve to provide axial motion when the locking sleeve is engaged with the articulation driver. help. Rotating torsion spring 1420 is configured to engage a boss on switch drum 1500 and a portion of nozzle housing 1203 to apply a biasing force to switch drum 1500 . The switch drum 1500 may further include an at least partially circumferential opening 1506 defined therein that receives a circumferential mount extending from the nozzle portions 1202,1203. , can be configured to allow relative rotation but not translation between switch drum 1500 and nozzle 1201 . The mount also extends through an opening 3011 in the proximal closure member segment 3010 and fits into a recess 1219 in the spine 1210. FIG. As the switch drum 1500 rotates about the shaft axis SA, eventually the actuating pin and locking sleeve rotate between their engaged and disengaged positions. In one configuration, rotation of the switch drum 1500 may be coupled to axial advancement of the closure tube or closure member. Thus, in essence, operation of the closure system is described in U.S. patent application Ser. have combined the firing drive system and the articulation in various ways, which are described in more detail in U.S. Patent Application Publication No. 2014/0263541 and U.S. Patent No. 9,913,642, entitled "SURGICAL INSTRUMENT COMPRISING A SENSOR SYSTEM." The drive system can be operably engaged and disengaged. For example, when the closure member segment 3010 is in its most proximal position, corresponding to the "jaws open" position, the closure member segment 3010 moves the switch drum 1500 to couple the articulation system with the firing drive system. are placed. When the closure tube has been moved to its distal position corresponding to the "jaw closed" position, the closure tube has rotated the switch drum 1500 to a position where the articulation system is released from the firing drive system. .

As also shown in FIG. 4, the shaft assembly 1200 can be configured to conduct power to and/or communicate signals with the end effector 1300, for example. A slip ring assembly 1600 may be provided. The slip ring assembly 1600 can include a proximal connector flange 1604 attached to a chassis flange 1242 extending from the chassis 1240 and a distal connector flange positioned within a slot defined within the shaft housing. The proximal connector flange 1604 can comprise a first surface and the distal connector flange can have a second surface positioned adjacent to the first surface and movable relative to the first surface. be prepared. The distal connector flange can rotate relative to the proximal connector flange 1604 about the shaft axis SA. Proximal connector flange 1604 can comprise a plurality of concentric, or at least substantially concentric, conductors defined on a first surface thereof. The connector can be attached to the proximal face of the connector flange and may have a plurality of contacts, each contact corresponding to and making electrical contact with one of the conductors. Such a configuration allows the proximal connector flange 1604 and the distal connector flange to rotate relative to each other while maintaining electrical contact therebetween. The proximal connector flange 1604 can include, for example, an electrical connector 1606 that can place conductors in signal communication with a shaft circuit board 1610 mounted to the shaft chassis 1240 . In at least one example, a wiring harness comprising multiple conductors can extend between the electrical connector 1606 and the shaft circuit board 1610 . Electrical connector 1606 may extend proximally through connector opening 1243 defined in chassis flange 1242 . Please refer to FIG. Further details regarding the slip ring assembly 1600 can be found, for example, in U.S. patent application Ser. U.S. patent application Ser. No., entitled "STAPLE CARTRIDGE TISSUE THICKNESS SENSOR SYSTEM". U.S. Patent Application No. 13/803,086, now U.S. Patent Application Publication No. 2014/0263541, U.S. Patent Application No. 13/800,067, now U.S. Patent Application Publication No. 2014/0263552, and U.S. Patent No. No. 9,345,481, each of which is incorporated herein by reference in its entirety.

As mentioned above, shaft assembly 1200 can include a proximal portion that is fixedly attached to handle 1014 and a distal portion that is rotatable about the longitudinal axis. The rotatable distal shaft portion can be rotated relative to the proximal portion about slip ring assembly 1600 as described above. A distal connector flange of the slip ring assembly 1600 can be positioned within the rotatable distal shaft portion. In addition to the above, a switch drum 1500 can also be positioned within the rotatable distal shaft portion. Rotation of the rotatable distal shaft portion can cause the distal connector flange and switch drum 1500 to rotate synchronously with each other. Additionally, the switch drum 1500 can be rotated between first and second positions relative to the distal connector flange. With switch drum 1500 in its first position, the articulation drive system may be operably disengaged from the firing drive system such that operation of the firing drive system articulates end effector 1300 of shaft assembly 1200 . unable to exercise. With the switch drum 1500 in its second position, the articulation drive system may be operatively engaged with the firing drive system, thus articulating the end effector 1300 of the shaft assembly 1200 by operation of the firing drive system. be able to. Moving switch drum 1500 between its first position and its second position causes switch drum 1500 to move relative to the distal connector flange. In various examples, shaft assembly 1200 can include at least one sensor configured to detect the position of switch drum 1500 .

Referring again to FIG. 4 , chassis 1240 includes at least one, and preferably two, housings formed thereon receivable in corresponding dovetail slots 1702 formed in distal mounting flange portion 1700 of frame 1020 . Includes tapered mounting portion 1244 . See FIG. Each dovetail slot 1702 may be tapered, or in other words somewhat v-shaped, to receive the mounting portion 1244 therein. As further shown in FIG. 4, shaft mounting lugs 1226 are formed at the proximal end of intermediate firing shaft portion 1222 . As will be described in greater detail below, when interchangeable shaft assembly 1200 is coupled to handle 1014 , shaft mounting lugs 1226 are received in firing shaft mounting cradle 1126 formed at distal end 1125 of longitudinal drive member 1120 . . See FIG.

Various shaft assembly embodiments employ a latch system 1710 to removably couple shaft assembly 1200 to housing 1012 and, more specifically, frame 1020 . As shown in FIG. 4, for example, in at least one form the latch system 1710 includes a locking member or locking yoke 1712 movably coupled to the chassis 1240 . In the illustrated embodiment, for example, lock yoke 1712 has a U-shape with two spaced downwardly extending legs 1714 . Each leg 1714 is formed with a pivot lug 1715 that is receivable within a corresponding hole 1245 formed in chassis 1240 . Such an arrangement facilitates pivotal attachment of lock yoke 1712 to chassis 1240 . Locking yoke 1712 may include two proximally projecting locking lugs 1716 configured to releasably engage corresponding locking detents or grooves 1704 in distal mounting flange 1700 of frame 1020 . . See FIG. In various forms, locking yoke 1712 is biased proximally by a spring or biasing member (not shown). Actuation of locking yoke 1712 may be accomplished by latch button 1722 slidably mounted on latch actuator assembly 1720 mounted on chassis 1240 . Latch button 1722 can be biased proximally against locking yoke 1712 . As will be described in more detail below, locking yoke 1712 may be moved to an unlocked position by biasing the latch button distally, which also pivots locking yoke 1712 to open frame 1020. out of retaining engagement with the distal mounting flange 1700 . When locking yoke 1712 is in “retaining engagement” with distal mounting flange 1700 of frame 1020 , locking lugs 1716 are retained within corresponding locking detents or grooves 1704 of distal mounting flange 1700 . It's settled.

When using an interchangeable shaft assembly, including end effectors of the types described herein, as well as other types of end effectors adapted to cut and fasten tissue, the interchangeable shaft is operated during actuation of the end effector. It may be desirable to prevent the assembly from being inadvertently separated from the housing. For example, in use, a clinician may actuate the closure trigger 1032 to grasp the target tissue and manipulate it into the desired position. Once the target tissue is positioned within the end effector 1300 in the desired orientation, the clinician then fully actuates the closure trigger 1032 to close the anvil 2000 and place the target tissue in place for cutting and stapling. Can be clamped. In that case, the first drive system 1030 is fully operational. It may be desirable to prevent inadvertent separation of shaft assembly 1200 from housing 1012 after target tissue has been clamped to end effector 1300 . One form of latch system 1710 is configured to prevent such inadvertent separation.

As seen most particularly in FIG. 4, the locking yoke 1712 has at least one, and preferably two locking hooks 1718 adapted to contact corresponding locking projections 1256 formed on the closure shuttle 1250. including. When the closure shuttle 1250 is in the inoperative position (i.e., the first drive system 1030 is inoperative and the anvil 2000 is open), the lock yoke 1712 is pivoted distally to open the interchangeable shaft assembly. 1200 may be unlocked from housing 1012 . In that position, locking hook 1718 is not in contact with locking projection 1256 of closure shuttle 1250 . However, moving the closure shuttle 1250 to the actuated position (i.e., the first drive system 1030 is actuated and the anvil 2000 is in the closed position) prevents the locking yoke 1712 from pivoting to the unlocked position. be done. Stated another way, if the clinician attempts to pivot the locking yoke 1712 to the unlocked position, or if, for example, the locking yoke 1712 is inadvertently pushed out in such a way as to pivot distally, or When contacted, locking hook 1718 of locking yoke 1712 contacts locking projection portion 1256 of closure shuttle 1250 to prevent locking yoke 1712 from moving to the unlocked position.

The attachment of replaceable shaft assembly 1200 to handle 1014 is described below. To begin the coupling process, the clinician places chassis 1240 of interchangeable shaft assembly 1200 on frame 1020 such that tapered mounting portion 1244 formed on chassis 1240 is aligned with dovetail slot 1702 on frame 1020 . may be positioned above or adjacent to the distal mounting flange portion 1700 of the . The clinician may then move shaft assembly 1200 along an attachment axis perpendicular to shaft axis SA to place attachment portions 1244 into “operable engagement” with corresponding dovetail receiving slots 1702 . In doing so, the shaft mounting lugs 1226 on the intermediate firing shaft portion 1222 are also mounted within the cradle 1126 of the longitudinally movable drive member 1120 and each portion of the pin 1037 on the second closure link 1038. are received within corresponding hooks 1252 of closure shuttle 1250 . As used herein, the term "operable engagement" in the context of two components means that when those two components are fully engaged with each other such that an actuation motion is applied to them, It means that the component can perform the intended acts, functions and/or procedures.

As described above, at least five systems of interchangeable shaft assembly 1200 can be operably coupled with at least five corresponding systems of handle 1014 . A first system may comprise a frame system that couples and/or aligns the frame or spine of shaft assembly 1200 with frame 1020 of handle 1014 . Another system can comprise a closure drive system 1030 that can operably connect the closure trigger 1032 of handle 1014 , closure tube 1260 and anvil 2000 of shaft assembly 1200 . As outlined above, closure shuttle 1250 of shaft assembly 1200 can be engaged with pin 1037 of second closure link 1038 . Another system can include a firing drive system 1080 that can operatively connect firing trigger 1130 of handle 1014 with intermediate firing shaft portion 1222 of shaft assembly 1200 . As outlined above, shaft mounting lug 1226 can be operably connected with cradle 1126 of longitudinal drive member 1120 . Another system can signal a controller within the handle 1014, such as a microcontroller, and/or a second may also include an electrical system capable of conducting electrical power and/or communication signals between shaft assembly 1200 and handle 1014 . As an example, shaft assembly 1200 can include electrical connector 1810 operably attached to shaft circuit board 1610 . Electrical connectors 1810 are configured to matingly engage corresponding electrical connectors 1800 on handle control board 1100 . Further details regarding the circuitry and control system can be found in U.S. Patent Application No. 13/803,086, now U.S. Patent Application Publication No. 2014/0263541, and U.S. Patent Application No. 14/226,142, now U.S. Patent No. 9,913,642, the entire disclosures of each of which are already incorporated herein by reference. A fifth system may consist of a latching system that releasably locks shaft assembly 1200 to handle 1014 .

Anvil 2000 in the illustrated example includes anvil body 2002 terminating in anvil attachment portion 2010 . Anvil mounting portion 2010 is movable or pivotable on elongated channel 1310 for selective pivotal movement relative to anvil mounting portion 2010 about fixed anvil pivot axis PA transverse to shaft axis SA. supported as possible. In the illustrated configuration, a pivot member or anvil trunnion 2012 extends laterally from each lateral side of anvil mounting portion 2010 to a corresponding trunnion formed in an upstanding wall 1315 of proximal end portion 1312 of elongate channel 1310 . Received within cradle 1316 . Anvil trunnions 2012 are pivotally retained within corresponding trunnion cradles 1316 by passage caps or anvil retainers 1290 . Channel cap or anvil retainer 1290 is a pair of mountings configured to be retained and received within corresponding protruding grooves or notches formed in upstanding wall 1315 of proximal end portion 1312 of elongated channel 1310. have lugs. See FIG.

With continued reference to FIG. 5, in at least one configuration, the distal closure member or end effector closure tube 3050 includes two axially offset proximal and distal positive jaw opening mechanisms 3060 and 3062. use. Positive jaw release mechanisms 3060 and 3062 are disclosed in U.S. patent application Ser. are configured to interact with corresponding release areas and stepped portions formed on the anvil attachment portion 2010, as described in more detail in US Patent Application Publication No. 2019/0000464. Other open jaw configurations may be used.

6-8 illustrate a conventional surgical cutting and fastening instrument 5010 configured to generate rotational drive motion for operating a surgical end effector 5012. FIG. Surgical instrument 5010 includes a handle 5006 , a shaft 5008 and an articulating surgical end effector 5012 pivotally coupled to shaft 5008 at articulation pivot point 5014 . An articulation control 5016 may be provided adjacent the handle 5006 to rotate the end effector 5012 about an articulation pivot point 5014 . It will be appreciated that various embodiments may include non-pivoting end effectors and thus may not include articulation pivot points 5014 or articulation controls 5016 .

Handle 5006 of instrument 5010 may include a closure trigger 5018 and a firing trigger 5020 for actuating end effector 5012 . It will be appreciated that instruments including end effectors intended for different surgical procedures may have different numbers or types of triggers or other suitable controls for operating the end effector 5012. . In one embodiment, the clinician or operator of the instrument 5010 can use co-pending U.S. Pat. End effector 5012 can be articulated with respect to shaft 5008 by utilizing articulation control 5016, as described in more detail in EFFECTOR. In this example, the end effector 5012 includes, among other things, a staple channel 5022 and a pivotally translatable clamping member, such as anvil 5024, for effective stapling of tissue clamped by the end effector 5012. and are kept at regular intervals to ensure cutting. The handle 5006 has a pistol grip 5026 by which the clinician can pivot and pull the closure trigger 5018 toward the pistol grip 5026 to clamp or close the anvil 5024 toward the staple channel 5022 of the end effector 5012. , can pinch tissue located between anvil 5024 and channel 5022 .

As shown in the embodiment of FIG. 7, the end effector 5012 includes, in addition to the channel 5022 and anvil 5024 discussed above, a cutting instrument 5032, a sled 5033, a staple cartridge 5034 removably received within the channel 5022, and a helically threaded shaft 5036 . Cutting instrument 5032 may be, for example, a knife. Anvil 5024 includes a pivot pin 5025 movably supported within a corresponding slot within channel 5022 . In one configuration, anvil 5024 includes tabs 5027 at its proximal end that are inserted into elements of a mechanical closure system (detailed below) to open and close anvil 5024 .

With continued reference to FIG. 7 , shaft 5008 may include proximal closure tube 5040 and distal closure tube 5042 pivotally connected by pivot connection 5044 . The distal obturator tube 5042 has an opening 5045 into which a tab 5027 of the anvil 5024 is inserted to open and close the anvil 5024, as described in more detail below. A proximal spine tube 5046 may be positioned inside the closure tubes 5040,5042. Disposed inside the proximal spine tube 5046 is a main rotary (or proximal) drive shaft 5048 that communicates with a secondary (or distal) drive shaft 5050 via bevel gear assemblies 5052a-c. Secondary drive shaft 5050 is connected to drive gear 5054 that engages proximal drive gear 5056 of helically threaded shaft 5036 . A vertical bevel gear 5052b may be positioned within an opening 5057 at the distal end of the proximal spine tube 5046 and pivot within the opening 5057 . A distal spine tube 5058 may be used to house the secondary drive shaft 5050 and drive gears 5054,5056. The primary drive shaft 5048, secondary drive shaft 5050 and articulation assemblies (eg, bevel gear assemblies 5052a-c) may be collectively referred to herein as the "primary drive shaft assembly."

A bearing 5038 located at the distal end of staple channel 5022 receives helical threaded shaft 5036 , allowing helical threaded shaft 5036 to rotate freely relative to channel 5022 . The helical threaded shaft 5036 interferes with a threaded opening (not shown) in the knife 5032 such that rotation of the helical threaded shaft 5036 causes the knife 5032 to move distally or proximally (rotationally) within the staple channel 5022. ) can be translated.

Referring now to FIG. 8, the handle 5006 has outer lower side components 5059, 5060 and outer upper side components 5061, 5062 that fit together to generally form the outer surface of the handle 5006. As shown in FIG. A battery 5064 , such as a lithium ion battery, can be provided in the pistol grip 5026 of the handle 5006 . A battery 5064 powers a motor 5065 located in the upper portion of the pistol grip portion 5026 of the handle 5006 . Motor 5065 can drive a 90° bevel gear assembly 5066 that includes a first bevel gear 5068 and a second bevel gear 5070 . Bevel gear assembly 5066 can drive planetary gear assembly 5072 . Planetary gear assembly 5072 may include pinion gear 5074 coupled to drive shaft 5076 . The pinion gear 5074 can drive a mating ring gear 5078 that drives a helical gear drum 5080 via a drive shaft. A ring 5084 may be threaded onto the helical gear drum 5080 . Thus, as motor 5065 rotates, ring 5084 is moved along helical gear drum 5080 by intervening bevel gear assembly 5066, planetary gear assembly 5072 and ring gear 5078.

Handle 5006 may include a central handle component 5104 adjacent the upper portion of firing trigger 5020 . Handle 5006 may also include a biasing spring 5112 coupled between the central handle component 5104 and the struts of firing trigger 5020 . A biasing spring 5112 can bias the firing trigger 5020 to its fully open position. Thus, when the operator releases firing trigger 5020, biasing spring 5112 pulls firing trigger 5020 to its open position. The distal end of helical gear drum 5080 includes a distal drive shaft 5120 that drives a ring gear 5122 that mates with pinion gear 5124 . Pinion gear 5124 is connected to main drive shaft 5048 of the main drive shaft assembly. Rotation of the motor 5065 thereby rotates the main drive shaft assembly thereby actuating the end effector 5012 . A ring 5084 threadedly attached to the helical gear drum 5080 may have posts 5086 located within slots 5088 of the slotted arm 5090 . The slotted arm 5090 has an opening 5092 at its opposite end 5094 that receives a pivot pin 5096 that is connected between the outer side pieces 5059, 5060 of the handle. Pivot pin 5096 is also disposed through opening 5100 of firing trigger 5020 and opening 5102 of central handle component 5104 .

Central handle piece 5104 includes a rear shoulder 5106 that engages slotted arm 5090 . Central handle component 5104 further includes a forward motion stop 5107 that engages firing trigger 5020 . Movement of slotted arm 5090 is controlled by rotation of motor 5065 as described above. As the slotted arm 5090 rotates counterclockwise as the ring 5084 moves from the proximal end to the distal end of the helical gear drum 5080, the central handle piece 5104 is free to rotate counterclockwise. Thus, when the user pulls the firing trigger 5020, the firing trigger 5020 engages the forward motion stop 5107 of the central handle component 5104, causing the central handle component 5104 to rotate counterclockwise. However, because the rear shoulder 5106 engages the slotted arm 5090 , the central handle piece 5104 can only rotate counterclockwise to the extent permitted by the slotted arm 5090 . This ensures that if the motor 5065 stops rotating for any reason, the slotted arm 5090 will stop rotating and the central handle component 5104 will not be able to rotate freely in the counterclockwise direction due to the slotted arm 5090, thus allowing the user to The firing trigger 5020 cannot be further pulled.

Exemplary closure system components for closing (or clamping) the anvil 5024 of the end effector 5012 by retracting the closure trigger 5018 are also shown in FIG. In the illustrated embodiment, the closure system includes a yoke 5250 connected to the closure trigger 5018. A pivot pin 5252 is inserted through aligned openings in both the closure trigger 5018 and the yoke 5250 so that both rotate about the same point. The distal end of yoke 5250 is coupled to first closure bracket 5256 via pin 5254 . First closure bracket 5256 is coupled to second closure bracket 5258 . Closure brackets 5256, 5258 are attached to the proximal end of proximal closure tube 5040 (see FIG. 7) such that longitudinal movement of closure brackets 5256, 5258 results in longitudinal movement through proximal closure tube 5040 (see FIG. 7). Together they define an opening within which the parts are mounted and retained. Instrument 5010 further includes a closure drive shaft 5260 disposed within proximal closure tube 5040 . The closure drive shaft 5260 is internally disposed with a strut 5263 of one of the handle exterior components, such as the exterior lower side component 5059 of the illustrated embodiment, to fixedly couple the closure drive shaft 5260 to the handle 5006. may include a window 5261 for This allows the proximal obturator tube 5040 to move longitudinally relative to the closure drive shaft 5260 . The closure drive shaft 5260 may further include a distal collar 5267 that fits into a cavity in the proximal spine tube 5046 and is retained in the cavity by a cap.

In operation, rotation of yoke 5250 by pulling closure trigger 5018 causes closure brackets 5256, 5258 to move proximal closure tube 5040 distally (i.e., away from the handle end of instrument 5010). , which causes distal obturator tube 5042 to move distally, causing anvil 5024 to rotate about pivot pin 5025 to a clamping or closed position. When the closure trigger 5018 is released from the locked position, the proximal closure tube 5040 slides proximally, which causes the distal closure tube 5042 to slide proximally, causing the distal closure tube 5042 to slide proximally. The anvil 5024 is pivoted about the pivot pin 5025 to the open or unclamped position by the insertion of the tab 5027 into the window 5045 of the anvil. In this manner, the operator clamps the tissue between the anvil 5024 and the channel 5022 by pulling and locking the closure trigger 5018, and releases the closure trigger 5018 from the locked position after the cutting/stapling operation. Tissue clamps can be loosened. Additional details regarding the construction and operation of existing surgical instruments 5010 are found in U.S. Patent Application No. 7,845,537, entitled "SURGICAL INSTRUMENT HAVING RECORDING CAPABILITIES," the entire disclosure of which is incorporated herein by reference. be able to. Other rotary drives configured for use with various forms of robotic systems are disclosed in U.S. Patent Application No. 2016/0287251, entitled "STAPLING END EFFECTOR CONFIGURED", the entire disclosure of which is incorporated herein by reference. TO COMPENSATE FOR AN UNEVER GAP BETWEEN A FIRST JAW AND A SECOND JAW".

9-16 illustrate a surgical end effector 20012 that can be used in connection with, for example, the powered surgical instrument 5010 described above. Surgical end effector 20012 may also be effectively used with various other rotary or robotic surgical systems disclosed in various references incorporated herein by reference. These components shown in FIGS. 9-16 are identical to components of powered surgical instrument 5010 that are similarly numbered. In the illustrated example, surgical end effector 20012 includes elongate channel 20020 configured to operably support surgical staple cartridge 20040 therein. Elongated channel 20020 is similar to channel 5022 described above, except for the noted differences. Referring to FIG. 10, elongated channel 20020 includes a pair of spaced apart upstanding walls 20022 and a bottom 20024 . The helical threaded shaft 5036 is supported within the channel 20020 by bearings 5038 that allow the helical threaded shaft 5036 to rotate freely relative to the channel 20020 . Surgical end effector 20012 further comprises an anvil 5024 having pivot pins or trunnions 5025 received in corresponding slots 20026 provided in upstanding channel wall 20022 .

Staple cartridge 20040 includes a cartridge body 20042 sized to be operably mounted within elongated channel 20020 . Cartridge body 20042 includes a cartridge slot 20050 that extends from a proximal end portion 20046 to a distal end portion 20044 of cartridge body 20042 . Cartridge body 20042 further includes a cartridge deck surface 20043 that faces staple forming lower surface 5029 of anvil 5024 when cartridge 20040 is installed within channel 20020 and anvil 5024 is pivoted to the closed position. Also in the illustrated example, three rows of surgical staple pockets 20052 are formed on each side of cartridge slot 20050 and open through cartridge deck surface 20043 . Each staple pocket 20052 may have a staple driver (not shown) associated with each staple pocket 20052 that supports surgical staples or fasteners (not shown) thereon.

With continued reference to FIG. 10, the staple cartridge 20040 further includes a cam assembly 20060 including a cam assembly body 20062 passing through a passageway 20064 configured to span the helical threaded shaft 5036 without affecting rotation thereof. In other embodiments, cam assembly 20060 may have a series of internal threads (not shown) configured to threadably engage helical threaded shaft 5036 driven by cam assembly 20060 . In such a configuration, for example, the helically threaded shaft 5036 may be provided with an unthreaded portion corresponding to the starting position of the cam assembly 20060 . Such cam assembly configurations are further described in various references incorporated herein by reference. In the illustrated example, cam assembly 20060 is driven distally through cartridge body 20042 by firing member 20120 .

As further shown in FIG. 10, cam assembly body 20062 includes a series of cam members 20066 aligned with corresponding staple drivers supported in rows within staple cartridge body 20042 . In the illustrated example, cam assembly 20060 includes an embedded tissue cutting member or blade 20068 . Tissue cutting member 20068 is positioned above deck surface 20043 such that tissue cutting member 20068 cuts tissue clamped between anvil 5024 and staple cartridge 20040 when cam assembly 20060 is driven distally. Extend. Cam assembly 20060 if the staple cartridge is "fresh" or new (i.e., the cartridge has never been fired and contains staples or fasteners therein that are ready to be fired) is at the starting position within cartridge 20040 . When the cam assembly 20060 is in the starting position, the tissue cutting member 20068 is positioned within a garage portion 20048 formed on the proximal end portion 20046 of the cartridge body 20042 to prevent damage when handling new cartridges 20040. To prevent. In one aspect, the cam member 20066 extends distally beyond the tissue cutting member 20068 such that the staples or fasteners are deployed through tissue before the tissue cutting member 20068 cuts the tissue. Thus, the clamped tissue is stapled and then cut as firing member 20120 and cam assembly 20060 are driven distally. Once firing member 20120 and cam assembly 20060 are driven to their distal-most endpoint position, firing member 20120 rotates helical threaded shaft 5036 in the opposite rotational direction while cam assembly 20060 remains in its endpoint position. may be pulled back to its starting position by rotating to . In at least one configuration, the tissue cutting member 20068 is stored below the cartridge deck surface 20043 to prevent damage when the tissue cutting member 20068 handles fired or used cartridges 20040 from the deployed cutting position. It can be moved to a storage position. For example, a retracting member (not shown) may be positioned on cartridge body 20042 such that when a portion of tissue cutting member 20068 contacts retracting member, it contacts tissue cutting member 20068 and moves it from the deployed position to the retracted position. may be strategically placed within the distal end 20044 of the .

11 illustrates one form of firing member 20120. FIG. As shown in FIG. 11, firing member 20120 includes body portion 20122 and two downwardly extending hollow mounting portions 20124 for receiving threaded drive nut 20130 therebetween. are not threaded and are spaced from each other. Threaded drive nut 20130 is configured to threadably engage helical threaded shaft 5036 . Drive nut 20130 includes a vertical tab portion 20131 sized to extend through axial slot 20025 ( FIG. 10 ) in bottom 20024 of elongated channel 20020 . Two laterally extending retention flanges 20134 are formed on threaded drive nut 20130 and configured to engage bottom 20024 of elongated channel 20020 . Additionally, two laterally extending anvil engaging tabs 20126 are formed on the top of firing member body 20122 to engage within anvil 5024 as firing member 20120 moves axially within surgical end effector 20012. are configured to engage corresponding ledges 20102 formed in the .

As shown in FIG. 11, firing member 20120 may further include an embedded firing member lockout assembly 20140 including a lockout member 20142 pivotally coupled to firing member body 20122. Lockout member 20142 includes a threaded latch 20148 configured to be engaged by cam assembly 20060 when cam assembly 20060 is in the unfired position. As shown in FIGS. 12 and 13, cam assembly 20060 includes firing member ledge 20061 configured to engage threaded latch 20148 on lockout member 20142 . A lockout spring 20150 is mounted within elongated channel 20020 and biases lockout member 20142 downwardly to extend each upstanding sidewall of elongated channel 20020 when cam assembly 20060 is not in its unfired starting position. Lockout member 20142 is configured to contact lockout lugs 20028 formed on portions of the inner surface of 20022 . Please refer to FIG. In that position, if the user accidentally attempts to advance firing member 20120 distally, lockout member 20142 contacts lockout lug 20028 on channel 20020 to prevent distal advancement of firing member 20120. .

12 shows initial insertion of a new, unfired surgical staple cartridge 20040 into channel 20020. FIG. As shown in FIG. 12, cam assembly 20060 is in a starting position, proximal end portion 20046 of surgical staple cartridge 20040 is inserted at an angle to channel 20020, and then firing member ledges on cam assembly 20060 are inserted. 20061 is pushed in the proximal direction PD until it is in unlocking engagement with the threaded latch portion 20148 of the lockout member 20142 . 13 and 14 show surgical staple cartridge 20040 in a properly installed position. As shown in FIG. 13, firing member lockout assembly 20140 is in the unlocked position. Rotation of helical threaded shaft 5036 in a first rotational direction causes distal movement of firing member 20120 in distal direction DD. Distal movement of firing member 20120 also drives cam assembly 20060 distally. Cam member 20066 cams a drive housed within cartridge 20040 upward within cartridge body 20042 . As the drive cams upward, staples or fasteners supported thereon are driven through tissue clamped between anvil 5024 and cartridge 20040 to contact staple forming lower surface 5029 on anvil 5024 . The stapled tissue is then cut by tissue cutting member 20068 . When firing member 20120 is driven to its distal-most position within cartridge 20040, helically threaded shaft 5036 rotates in a second, opposite rotational direction to retract firing member 20120 to its starting position. be able to. Cam assembly 20060 resides within distal end portion 20044 of cartridge body 20042 . A used cartridge 20040 may then be removed from the channel 20020 .

FIG. 14 shows the end effector 20012 after the used cartridge has been removed from the channel 20020. FIG. Spring 20150 biases lockout member 20142 of firing member lockout assembly 20140 into locking engagement with lockout lug 20028 within channel 20020, as shown in FIG. When a user attempts to fire surgical end effector 20012 (advance firing member 20120 distally), lockout member 20142 prevents firing member 20120 from moving distally. Similarly, when a user attempts to reuse a spent cartridge, firing member lockout assembly 20140 prevents distal advancement of firing member 20120 because cam assembly 20060 is not in the starting position.

In the illustrated configuration, lockout member 20142 is pivotally coupled to firing member body 20122 by pivot pin 20143 received within bore 20123 extending through firing member body 20122 . See FIGS. 14 and 16. FIG. In at least one configuration, the pivot pin 20143 is sized relative to the bore 20123 of the firing member body 20122 to facilitate free pivotal movement of the lockout member 20142 and to account for component tolerances. there is As shown in FIG. 14, the firing member 20120 is configured to abut a distally facing bearing surface 20125 on the firing member body 20122 when the firing member lockout assembly 20140 is in the unlocked position. Includes a proximally facing firing surface 20145 . Thus, as firing member 20120 is advanced distally, the resistive forces experienced by cam assembly 20060 during its distal movement are applied directly to distally facing bearing surface 20125 on firing member body 20122 . Such a configuration can prevent these resisting forces from returning to the pivot pin 20143 and breaking the pivot pin 20143 from such loads. Similarly, as shown in FIG. 16, the proximally facing angled bearing surface 20145 of the firing member 20120 is a distally facing surface on the firing member body 20122 when the firing member lockout assembly 20140 is in the locked position. is configured to abut against a bearing surface 20125 that Such a configuration prevents the resistive locking force caused by the locking engagement of the lockout member 20142 with the lock lug 20028 to return to the pivot pin 20143 and damage the pivot pin 20143 from such loads. be able to. The loose fit between the pin 20143 and the hole 20123 in the firing member body 20122 allows some degree of translation of the lockout member 20142 under load such that the load is transferred to the firing member body 20122 rather than the pin 20143 itself. make it easier to

In another configuration, or in addition to the lockout member 20142 configuration described above, the amount of current drawn by the motor used to impart rotational motion to the helically threaded shaft 5036 is monitored. When the current increases beyond a predetermined threshold, a control circuit, such as a surgical instrument or robotic system, stops the motor and allows further rotation of the helical screw shaft 5036 to prevent damage to the aforementioned components. and movement of the firing member 20120 can be prevented.

Some conventional firing member lockout configurations configured to prevent advancement of the end effector's firing member when a new, unfired staple cartridge is not properly seated within the surgical end effector have been provided by the anvil. Requires the user to actively retract the firing member to its most proximal starting position before it can be opened. If the user attempts to open the anvil before the firing member has returned to its most proximal position, the user may not understand why the anvil does not open. The above configuration can prevent such confusion.

17-21 illustrate a surgical end effector 20300 that can be used, for example, in connection with the powered surgical instrument 1010 described above. Surgical end effector 20300 may also be effectively used with various other robotic surgical systems disclosed in various references incorporated herein by reference. These components shown in FIGS. 17-21 are identical to those of surgical instrument 1010 that are similarly numbered. The structure and function of those components of surgical instrument 1010 that are not necessary to understand the operation of surgical end effector 20300 are not repeated here for brevity.

As shown in FIGS. 17-21, surgical end effector 20300 includes elongate channel 20310 configured to operably support surgical staple cartridge 20600 therein. In the illustrated example, elongated channel 20310 includes channel bottom 20312 and a pair of upstanding sidewalls 20314 . Channel 20310 is coupled to elongated shaft assembly 1200 (FIG. 5) by a channel attachment mechanism 20340 that can facilitate articulation thereof about articulation joint 3020 (FIG. 5). As shown in FIG. 19, for example, in one configuration, the channel attachment mechanism 20340 includes a body portion 20342 consisting of an upright support 20344 with a slot 20346 for receiving the firing member beam 1900 (FIG. 5) therein extending through the upright support. 20344 extends through. Channel attachment mechanism 20340 may be movably or pivotally attached to proximal end 20316 of channel 20310 by channel attachment mechanism or channel pin 20320 . Specifically, the channel attachment feature 20320 has a transverse pin opening 20348 configured to coaxially align with a hole 20318 in the side wall 20314 of the channel 20310 to receive the channel pin 20320 therein. Including further.

As mentioned above, shaft assembly 1200 includes spine 1210 that terminates in upper lug attachment mechanism 1270 and lower lug attachment mechanism 1280 . Please refer to FIG. The interior of the upper lug attachment mechanism 1270 is formed with a lug slot 1272 in which an upper attachment link 1274 can be fixedly supported. Similarly, the interior of the lower lug attachment mechanism 1280 is formed with a lug slot 1282 capable of fixedly supporting a lower attachment link 1284 therein. The upper mounting link 1274 has a pivot socket 1276 therein capable of rotatably receiving a pivot pin 1292 formed on a channel cap or anvil retainer 1290 attached to the proximal end portion 20316 of the elongated channel 20310 . include. As shown in FIG. 19, the channel attachment mechanism 20340 further includes a shaft attachment flange 20350 extending proximally therefrom. For example, in one configuration, the shaft mounting flange 20350 can pivotally receive the lower pivot pin 1286 on the lower mounting link 1284 of the lower lug mounting mechanism 1280 (Fig. 5). It has a pivot hole 20352 . Lower pivot pin 1286 is vertically aligned with pivot socket 1276 to define an articulation axis AA about which surgical end effector 20300 may articulate relative to spine 1210 . In one configuration, proximal articulation drive 2102 ( FIG. 5 ) may be directly coupled to articulation lugs 20354 formed on shaft mounting flange 20350 . In other configurations, proximal articulation drive 2102 may be attached to one or more articulation links attached to shaft mounting flange 20350 . In either case, axial movement of the proximal articulation drive 2102 in the manner described above pivots the channel attachment mechanism about the articulation axis with respect to the spine 1210 (FIG. 5), causing the end effector 20300 to move. Articulate about articulation axis AA.

Surgical end effector 20300 further comprises an anvil 20400 that is very similar to anvil 2000 described above, except for the differences described below. Anvil 20400 includes an elongate anvil body portion 20402 having a staple-forming lower surface 20404 and an anvil attachment portion 20410 configured to interact with end effector closure tube 3050 (FIG. 5) in the manner described above. Anvil 20400 is pivotally mounted on elongated channel 20310 by a pair of laterally extending anvil pins or trunnions 20412 received in corresponding elongated trunnion slots 20322 formed in upstanding channel walls 20314 . Axial movement of the end effector closure tube 3050 in the distal direction causes the anvil 20400 to pivot about the pivot axis defined by the anvil trunnion 20412 to a closed position, causing the end effector closure tube 3050 to pivot proximally. movement pivots the anvil relative to the elongated channel 20310 to the open position.

FIG. 22 shows one form of staple cartridge 20600 usable in connection with surgical end effector 20300. FIG. In at least one configuration, surgical staple cartridge 20600 comprises an elongated cartridge body 20602 sized to be removably mounted within elongated channel 20310 . The cartridge body 20602 includes a cartridge slot 20608 that extends from a proximal end portion 20604 of the cartridge body 20602 to a distal end portion 20606 (FIG. 17). Cartridge body 20602 further includes a cartridge deck surface 20610 that faces staple forming lower surface 20404 of anvil 20400 when cartridge 20600 is installed within channel 20310 and anvil 20400 is pivoted to the closed position. Also in the illustrated example, three rows of surgical staple pockets 20612 are formed on each side of cartridge slot 20608 and open through cartridge deck surface 20610 . Each staple pocket 20612 may have a staple driver (not shown) associated with each staple pocket 20612 that supports surgical staples or fasteners (not shown) thereon. In at least one example, cartridge body 20602 is molded from a polymeric material having staple pockets 20612 molded or machined therein. In one configuration, staple pockets 20612 also open through the bottom of cartridge body 20602 to facilitate attachment of drivers and fasteners to their respective pockets 20612 . The cartridge pan 20620 is attached to the bottom of the cartridge body 20602 once the drivers and fasteners have been inserted into their respective staple pockets 20612 . In one form, cartridge pan 20620 is fabricated from a metallic material and includes a bottom portion 20622 that spans the bottom of cartridge body 20602 and two upstanding sidewalls 20624 that correspond to respective sides of cartridge body 20602 . Cartridge pan 20620 may be removably attached to cartridge body 20602 by a series of hooks 20626 formed on sidewalls 20624 and configured to hookably engage corresponding portions of cartridge body 20602 . Please refer to FIG. Cartridge pan 20620 , in particular, when attached, can prevent the drive and fasteners from falling out of the bottom of cartridge body 20602 during handling and installation of cartridge 20600 into elongated channel 20310 .

As described above with respect to cartridge 20040, cartridge 20600 operably supports a cam assembly therein. The cam assembly comprises a series of spaced apart cam members configured to move axially within corresponding cam slots 20609 formed on opposite sides of cartridge slot 20608 in cartridge body 20602 . The cam slots 20609 are driven within the cartridge body 20602 as the cam assembly is driven through the staple cartridge 20600 from a starting position within the proximal end portion 20604 of the cartridge body 20602 to an ending position within the distal end portion 20606. aligned with corresponding rows of portions to facilitate cam contact with corresponding cam members.

The example shown in FIGS. 20 and 21 is attached to the distal end of firing member beam 1900 and operatively interfaces with a cam assembly within staple cartridge 20600 to move the cam assembly from its starting position within cartridge 20600 to its endpoint. A firing member 20500 configured to be driven into position is also employed. In at least one configuration, firing member 20500 is configured to interact with a cam assembly (not shown) within staple cartridge 20600 suitably mounted within elongated channel 20310 . For example, firing member 20500 includes a firing member body 20502 having a tissue cutting surface or blade 20504 formed thereon or attached thereto. Firing member body 20502 is sized to move axially within an axial anvil slot (not shown) of anvil 20400, cartridge slot 20608 of cartridge body 20602, and channel slot (not shown) of elongated channel 20310. It is said. A lower foot assembly 20506 comprising a pair of laterally extending lower flanges 20508 extends from the lower end of the firing member body 20502 to slide over corresponding channel ledges (not shown) formed on either side of the channel slot. movably engage. An upper foot (not shown) comprising two laterally extending anvil tabs may be formed at the upper end of firing member body 20502 and slide over anvil ledges (not shown) formed on either side of the anvil slot. configured to be movably engaged. In at least one configuration, firing member 20500 further includes a pair of central tabs 20510 extending laterally from opposite sides of firing member body 20502 .

With continued reference to FIGS. 20 and 21, in one configuration, firing member body 20502 is mounted within elongate channel 20310 and biases firing member 20500 downward (arrow DN) within elongate channel 20310 to a locked position. includes a proximally extending spring tail 20512 that can be configured to operatively interface with a firing member lockout spring 20520 that is configured to. In the locked position, firing member foot 20506 and/or central tab 20510 are offset from corresponding passages within channel 20310, thus preventing firing member 20500 in a locked-out state from being distally advanced by a user. Member 20500 does not move distally due to such misalignment. That is, foot 20506 and/or central tab 20510 prevent distal advancement of firing member 20500 by contacting portions of the elongate channel. In one configuration, a threaded latch 20514 is formed on firing member body 20502 and is configured to be engaged by a corresponding portion formed on a cam assembly operably supported within surgical staple cartridge 20600. there is When a new, unfired staple cartridge 20600 with its cam assembly in its starting position is operably installed within elongated channel 20310, a portion of the cam assembly engages threaded latch 20514 on firing member body 20502, causing the firing member to Raise 20500 to an unlocked position in which lower foot assembly 20506 and/or center tab 20510 are aligned with respective passages in channel 20310 to allow firing member 20500 to advance axially therein. (arrow UP in FIG. 20). As the user advances the firing member 20500 distally into the cartridge 20600, the firing member 20500 also drives a cam assembly therein to cam the drive upward to produce staples or fasteners supported thereon. Bring the tool into contact with the underside of the anvil. Tissue cutting member 20504 on firing member 20500 then cuts the stapled tissue. When the firing member 20500 is driven to its distal-most position corresponding to the end position of the cam assembly, the firing member 20500 is retracted to its proximal-most position, driving the cam assembly to the distal end 20606 of the cartridge 20600. leave. When the firing member 20500 returns to its proximal-most starting position, the firing member lockout spring 20520 again biases the firing member 20500 back to its locked position. Thus, if the user attempts to reuse the used cartridge 20600, the cam assembly will not be in its starting position required to unlock the firing member 20500.

Surgical end effector 20300 also prevents anvil 20400 from moving from an open position to a closed (clamped) position unless a corresponding matching surgical staple cartridge 20600 is operably mounted within elongated channel 20310. A closed lockout system 20700 may be employed for. In the illustrated example, closure lockout system 20700 includes an anvil lock 20702 configured to move between anvil locked and anvil unlocked positions in response to installation of staple cartridge 20600 therein. FIG. 19 shows one form of anvil lock 20702 . The anvil lock 20702 may be fabricated from spring steel or other suitable metal and is configurable to fit within a transverse spring mounting slot 20343 provided within the body portion 20342 of the channel mounting mechanism 20340. A bias arm 20704 is included. Anvil lock 20702 further includes a distally extending body portion 20706 from which downwardly extending attachment tabs 20708 and upwardly extending anvil lockout tabs 20710 project. As shown in FIGS. 17, 18 and 20, mounting tabs 20708 extend into clearance windows 20319 formed within elongated channels 20310 .

FIG. 19 shows surgical end effector 20300 without a surgical staple cartridge installed therein. As shown in FIG. 19, proximal biasing arm 20704 biases anvil lock 20702 to a distal "anvil lock" position. In this position, anvil lockout tab 20710 is aligned with a portion of anvil lockout lug 20414 formed on anvil attachment portion 20410 of anvil 20400 . When the user attempts to close anvil 20400, anvil locking lug 20414 contacts anvil lockout tab 20710 to prevent further movement of anvil 20400 in the closing direction.

Returning to FIG. 21, in at least one configuration, staple cartridge 20600 unlocks with actuation tabs 20712 formed on the distal end of anvil lock 20702 when cartridge 20600 is operably mounted within elongated channel 20310. It includes an anvil unlocking mechanism or tab 20630 protruding proximally from the cartridge body 20602 that is aligned for engagement. FIG. 20 shows surgical staple cartridge 20600 operably mounted within elongated channel 20310 . As shown in FIG. 21 , anvil lock release tab 20630 on staple cartridge body 20602 contacts actuation tab 20712 of anvil lockout 20702 and anvil lockout 20702 engages anvil lockout tab 20710 to lock anvil lock on anvil 20400 . bias proximally PD to the unlocked position out of alignment with lug 20414; In that position, the user can pivot the anvil 20400 to the closed position. If the user attempts to install an improper cartridge that does not have anvil unlock tab 20630 or a similar mechanism designed to unlock anvil lockout 20702, the user must close anvil 20400 and perform the surgical stapling procedure. cannot be completed.

FIG. 23 illustrates an anvil 20400' of a surgical end effector 20300' closed from an open position when no corresponding suitable surgical staple cartridge 20600' is operably mounted within a corresponding elongated channel (not shown). 20700 shows an alternative closure lockout system 20700' for preventing movement to the (clamped) position. Surgical end effector 20300' is substantially identical to surgical end effector 20300 described above, except for the differences described below. Closure lockout system 20700' comprises an anvil lockout 20702' that is substantially identical to anvil lockout 20702 described above, except for the following differences. For example, anvil lockout 20702 may be fabricated from spring steel or other suitable metal and may include a distally extending body portion 20706' having a spring portion 20707' formed therein. Anchor tabs 20703' are formed on the proximal end of anvil lockout 20702' that serve to connect anvil lockout 20702' to channel attachment mechanism 20340 (FIG. 19). Additionally, downwardly extending mounting tabs 20708' and upwardly extending anvil lockout tabs 20710' project from body portion 20706'. Actuation tabs 20712' are formed on the distal end of body portion 20706'.

Surgical staple cartridge 20600 ′ is similar to surgical staple cartridge 20600 described above and includes a cartridge body 20602 ′ sized to be removably mounted within elongated channel 20310 . Cartridge body 20602' includes cartridge slot 20608' extending from a proximal end portion 20604' to a distal end portion of cartridge body 20602'. Cartridge body 20602' further includes a cartridge deck surface 20610' and three rows of surgical staple pockets 20612' located on opposite sides of cartridge slot 20608'. As shown in FIG. 23, staple pockets 20612' and staples or fasteners therein (not shown) are aligned on pocket axis PA' parallel to cartridge slot 20608'. Thus, the staples/fasteners are applied in rows generally parallel to the cartridge slot 20608' and the tissue cut line. Similar to surgical staple cartridge 20600, surgical staple cartridge 20600' includes a cartridge pan 20624' and an anvil unlocking mechanism or tab 20630' projecting proximally from cartridge body 20602'.

With continued reference to FIG. 23, anvil 20400' is similar to anvil 20400 except for the differences described below. Anvil 20400' includes an elongated anvil body portion 20402' and an anvil mounting portion 20410' configured to interact with end effector closure tube 3050 (Fig. 5) in the manner described above. Anvil body portion 20402' includes a staple-forming lower surface 20404' bisected by anvil slot 20405' configured to pass firing member 20500 therethrough. As shown in FIG. 23, lower staple forming surface 20404' includes three rows of staple forming pockets 20407' disposed on forming pocket axis FPA parallel to anvil slots 20405'. When anvil 20400' is moved to the closed position, anvil slot 20405' is vertically aligned with cartridge slot 20608' to allow passage of firing member 20500. Rows of staple forming pockets 20407' are aligned with staple pockets 20612' such that when staples are driven out of cartridge 20600' they contact and crimp corresponding pairs of staple forming pockets 20407'. Accordingly, the arrangement of staple forming pockets in anvil 20400' must correspond to the arrangement of staple pockets 20612' in cartridge 20600' in order for the staples to form properly. As further shown in FIG. 23, in this configuration the anvil 20400' includes a downwardly extending anvil locking lug 20414' formed distally from the anvil mounting portion 20410', the anvil locking lug 20414': When anvil lockout 20702' is in the locked position (eg, no cartridge inserted in channel 20310 or an incorrect cartridge installed in channel 20310), contact anvil lockout tab 20710'. is configured to When cartridge 20600' is properly seated within elongated channel 20310, anvil unlock mechanism 20630' thereon contacts actuation tab 20712' on anvil lockout 20702' to force lockout 20702' into the anvil. Lockout tab 20710' biases proximally to an unlocked position allowing anvil 20400' to pivot out of locking alignment with anvil locking lug 20414' to a closed position.

FIG. 24 illustrates the anvil 20400 ″ of another surgical end effector 20300 ″ moving from an open position to a closed (clamped) position when no matching surgical staple cartridge 20600 ″ is operably mounted within the elongated channel 20310 . 20700" shows an alternative closure lockout system 20700". Surgical end effector 20300'' is substantially identical to surgical end effector 20300 described above, except for the differences described below. anvil lockout 20702" that is substantially identical to the anvil lockout 20702 of . It may include a distally extending body portion 20706'' having a portion 20707''. The proximal end of anvil lockout 20702" has formed thereon an anchor tab 20703" that serves to connect anvil lockout 20702" to channel attachment mechanism 20340 (FIG. 19). In addition, body portion 20706". '' project downwardly extending mounting tabs 20708'' and upwardly extending anvil lockout tabs 20710''. Actuation tabs 20712" are formed on the distal end of body portion 20706".

Surgical staple cartridge 20600 ″ is similar to surgical staple cartridge 20600 described above and includes a cartridge body 20602 ″ sized to be removably mounted within elongated channel 20310 . The cartridge body 20602'' includes a cartridge slot 20608'' that extends from a proximal end portion 20604'' to a distal end portion of the cartridge body 20602''. Cartridge body 20602" further includes a cartridge deck surface 20610" and two rows of surgical staple pockets 20612" located on opposite sides of cartridge slot 20608". As shown in FIG. 24, the staple pockets 20612'', as well as the staples or fasteners therein (not shown), are aligned on the pocket axis PA'' transverse to the cartridge slots 20608''. The fasteners are applied in rows generally transverse to the cartridge slots 20608'' and the tissue cut line. Such fastener placement creates a "flexible" or "elastic" staple line. Further details regarding cartridges for developing flexible or stretchable staple lines are found in U.S. Patent Application Publication No. 14/498,121, entitled "Invention 14/498,121," the entire disclosure of which is incorporated herein by reference. FASTENER CARTRIDGE FOR CREATING A FLEXIBLE STAPLE LINE", now U.S. Pat. No. 9,801,627. Similar to the surgical staple cartridge 20600, the surgical staple cartridge 20600" includes a cartridge pan 20624" and an anvil unlocking mechanism or tab 20630" projecting proximally from the cartridge body 20602'.

With continued reference to FIG. 24, the anvil 20400'' is similar to the anvil 20400 except for the differences described below. The anvil 20400'' includes an elongated anvil body portion 20402'' and an end effector closure tube 3050 in the manner described above. (FIG. 5) and an anvil mounting portion 20410'' configured to interact with. Anvil body portion 20402'' includes a staple forming lower surface 20404'' bisected by anvil slot 20405'' configured to pass firing member 20500 therethrough. As shown in FIG. , a row of staple forming pockets 20407" disposed on forming pocket axis FPA transverse to anvil slots 20405". When the anvil 20400" is moved to the closed position, the anvil slots 20405" are vertically aligned with the cartridge slots 20608" to allow the passage of the firing member 20500. The rows of staple forming pockets 20407" allow the staples to be surgically removed. are aligned with the staple pockets 20612" so as to contact and crimp corresponding pairs of the forming pockets 20407" when driven from the staple cartridge 20600" for the anvil 20400". 20407″ must correspond to the alignment of staple pockets 20612″ in cartridge 20600″ in order for the staples to form properly. As further shown in FIG. 24, in this configuration: Anvil 20400'' includes a downwardly extending anvil locking lug 20414'' formed distally from or attached to anvil mounting portion 20410'', which anvil locking lug 20414'' is connected to anvil lockout 20702''. configured to contact anvil lockout tab 20710'' when in the locked position (e.g., no cartridge inserted in channel 20310 or an incorrect cartridge installed in channel 20310). When the cartridge 20600'' is properly seated within the elongated channel 20310, the anvil unlock mechanism 20630'' thereon contacts the actuating tab 20712'' on the anvil lockout 20702'', thereby disengaging the anvil lockout 20702''. proximally to an unlocked position where anvil lockout tab 20710" is out of locking alignment with anvil lock lug 20414" to allow anvil 20400" to pivot closed.

As noted above, various surgical staple cartridges may have different arrangements and/or orientations of staples/fasteners therein. The size of the staples or fasteners as well as the number of fasteners may vary depending on the type of cartridge depending on the particular surgical procedure or application. In order for the staples to be properly crimped or formed, a surgical staple cartridge must be used in conjunction with a corresponding anvil having the proper arrangement of staple forming pockets therein. If a "misfitting" cartridge is loaded into an end effector having an anvil that does not match the cartridge, the staples will not form properly during the firing process, with potentially catastrophic results. For example, the surgical staple cartridge 20600' shown in FIG. 23 matches or "matches" the anvil 20400' shown in FIG. The surgical staple cartridge 20600'' shown in FIG. 24 matches or "matches" the anvil 20400'' shown in FIG. However, the surgical staple cartridge 20600'' of FIG. 24 is incompatible with the anvil 20400' shown in FIG. 23, for example.

The closure lockout system used in the above example can avoid activation of mismatched cartridges loaded into the end effector. For example, anvil unlocking mechanism or tab 20630' on staple cartridge 20600' is located to the left of cartridge slot 20608' and when cartridge 20600' is properly loaded within channel 20310 of end effector 20300', It is placed in contact with actuator tab 20712' on anvil lockout spring 20707'. Conversely, an anvil unlocking mechanism or tab 20630″ on cartridge 20600″ is located to the right of cartridge slot 20608″ and provides anvil lock when cartridge 20600″ is properly loaded within channel 20310. It is aligned to contact actuator tab 20712'' on out 20702''. When the user loads the cartridge 20600" into the channel 20310 of the end effector 20300', the anvil unlock mechanism or tab 20630" on the staple cartridge 20600" contacts and contacts the actuator tab 20712' on the anvil lockout 20702'. to the unlocked position and the user cannot pivot the anvil 20400' closed. The anvil unlocking mechanism or tab 20630' does not contact the actuator tab 20712" on the anvil lockout 20702" to move it to the unlocked position, allowing the user to pivot the anvil 20400" closed. No. If the user inadvertently loads another cartridge that does not have the proper anvil unlock mechanism or tabs to accommodate the anvil lockout in the end effector, the user will not be able to close the anvil. The location, shape, length, etc., of the anvil unlocking mechanism or tab of the staple cartridge may vary depending on the cartridge type and the actuator member on the corresponding anvil lockout located within the corresponding surgical end effector ( size, position, shape, number, etc.) For example, the anvil unlocking mechanism or tabs may be integrally formed on the cartridge body, or may be machined or molded into the cartridge body. may be attached to the cartridge body, may be attached to the cam assembly of the cartridge, may be integrally formed on the cam assembly of the cartridge, or may comprise a portion of the cartridge pan. All variations are contemplated herein and are intended to be covered by the following claims.

Figures 25-29 show a surgical end effector 21300 that is very similar to the surgical end effectors 20300, 20300', 20300" described above, except for the differences described below. , end effector 21300 includes an elongated channel 21310 configured to operably support surgical staple cartridge 21600 therein.In the illustrated example, elongated channel 21310 includes a channel bottom 21312 and a pair of and an upstanding sidewall 21314. Although not shown, the channel 21310 is attached to the elongated shaft assembly by a channel attachment mechanism 20340 (described above) that can facilitate articulation thereof about the articulation joint 3020 (FIG. 5). 1200 (FIG. 5) Surgical end effector 21300 further comprises an anvil 21400 which may be very similar to anvil 20400 described above, except for the differences described below.Anvil 21400 has a staple forming lower surface. and an anvil mounting portion 21410 configured to interact with the end effector closure tube 3050 (FIG. 5) in the manner described above.The anvil 21400 is formed within an upstanding channel wall 21314. 21410 is pivotally mounted on elongated channel 21310 by a pair of laterally extending anvil pins or trunnions 21412 received in corresponding elongated trunnion slots 21320. End effector closure tube 3050 is pivoted distally. Axial movement translates anvil 21400 distally until trunnions 21412 contact the distal ends of respective trunnion slots 21320 and pivot to a closed position. Moving in the positional direction causes anvil 21400 to pivot to an open position relative to elongated channel 21310 .

End effector 21300 operatively supports surgical staple cartridge 21600 which may be substantially identical to surgical staple cartridge 20600 except that anvil unlocking mechanism or tab 21630 includes a portion of cartridge pan 21620. is configured as Anvil unlock mechanism 21630 is configured to operably interact with axially movable anvil lock 21702 supported by channel 21310 . Referring to FIG. 27, anvil lock 21702 is supported for axial movement between distal and proximal locked positions by guide block 21720 attached to a portion of channel 21310 . In one embodiment, anvil lock 21702 may be formed from metal and guide block 21720 is made from 40% carbon-filled nylon 6/6 and attached to sidewalls 21314 of channel 21310 by suitable adhesive or other fastening means. may be attached. Guide block 21720 may define a guide channel 21722 configured to support lock tab portion 21710 of anvil lock 21702 . Anvil lock 21702 further includes a vertical body portion 21706 having actuation tabs 21712 formed at its distal end. Anvil lock 21702 is biased to a distal locked position by a tension spring 21730 attached to anvil lock 21702 and channel sidewall 21314 . In the absence of a cartridge, the tension spring 21730 biases the anvil lock 21702 to a distal locked position where the locking tab portion 21710 contacts a portion of the anvil 21400 preventing the anvil 21400 from pivoting to the closed position. do. When a suitable or matching cartridge 21600 is loaded into elongated channel 21310, an unlocking mechanism or tab 21630 on cartridge pan 21620 contacts actuation tab 21712 on anvil lock 21702 to disengage anvil lock 21702 from the anvil lock. The locking tab portion 21710 of 21702 is moved proximally to the unlocked position where it no longer interferes with pivotal movement of the anvil 21400 . As shown in FIG. 25, the anvil unlocking mechanism 21630 of surgical staple cartridge 21600 is "asymmetric" in design. That is, the anvil unlocking mechanism 21630 is located on only one side of the proximal end of the cartridge 21600 . FIG. 25 shows the old relief region 21315 present in the previous channel configuration and the new relief regions 21317, 21319 provided within the channel 21310 to accommodate the cartridge 21600 therein.

FIG. 30 shows a portion of a surgical end effector 21300' which is identical to end effector 21300 except end effector 21300' employs anvil lock 21702' shown in FIGS. In one example, the anvil lock 21702' may be made from 40% carbon-filled nylon 6/6 and may include a vertical body portion 21706' having a locking portion 21710' formed at its upper end. Actuation tabs 21712' are formed on the distal end and gussets 21714' are also employed to further support actuation tabs 21712'. As described above, when a suitable or matching surgical staple cartridge 21600 is loaded within elongate channel 21310, the unlocking mechanism or tab 21630 of cartridge pan 21620 contacts actuation tab 21712' on anvil lock 21702'. , moving anvil lock 21702' proximally to an unlocked position in which locking portion 21710' of anvil lock 21702' no longer prevents pivotal movement of anvil 21400. FIG.

FIG. 33 shows another surgical end effector 22300 that employs an anvil lockout system 22700. As shown in FIG. End effector 22300 is similar to end effector 20300 except for the differences noted. In this form, the end effector 22300 includes an elongated channel 22310 configured to operably support a surgical staple cartridge 22600 therein. In the illustrated example, elongated channel 22310 includes channel bottom 22312 and a pair of upstanding sidewalls 22314 . Although not shown, channel 22310 is coupled to elongated shaft assembly 1200 (FIG. 5) by channel attachment mechanism 20340 (described above) that can facilitate articulation thereof about articulation joint 3020 (FIG. 5). can be Surgical end effector 22300 further comprises an anvil 22400 that is very similar to anvil 20400 described above, except for the differences described below. Anvil 22400 includes an elongated anvil body portion 22402 and an anvil attachment portion 22410 configured to interact with end effector closure tube 3050 (FIG. 5) in the manner described above. Anvil 22400 is pivotally mounted on elongated channel 22310 by a pair of laterally extending anvil pins or trunnions 22412 received in corresponding elongated trunnion slots 22320 formed in upstanding channel sidewalls 22314 . As the end effector closure tube 3050 moves axially distally, the anvil trunnion 22412 translates distally within the trunnion slot 22320 to pivot the anvil 22400 to the closed position. Conversely, as the end effector closure tube 3050 moves proximally, the anvil 22400 pivots relative to the elongated channel 22310 to an open position.

End effector 22300 is substantially similar to surgical staple cartridge 20600 except that anvil unlocking mechanism or tab 22630 has a curvilinear proximal end face 22632 formed on the right side of proximal end portion 22604 of cartridge body 22602. configured to operatively support a surgical staple cartridge 22600, which may be identical to the . In the illustrated example, the curvilinear proximal end surface 22632 has an arcuate shape. Anvil unlock mechanism 22630 is configured to operably interact with axially movable anvil lock 22702 of anvil lockout system 22700 supported by channel 22310 . In the illustrated example, anvil lock 22702 is supported for axial movement between distal locked and proximal unlocked positions within proximal end portion 22316 of elongated channel 22310 . In the illustrated example, anvil lock 22702 is elongated having anvil lock tab 22710 formed at its proximal end and configured for locking interaction with locking lug 22413 formed on anvil attachment portion 22410 of anvil 22400 . Includes body portion 22706 . See FIG. Actuation tabs 22712 are formed on the distal end of body portion 22706 . Formed within actuation tab 22712 is a contoured actuation surface 22714 that is configured to substantially match or mate with contoured proximal end surface 22632 on anvil unlocking mechanism 22630 . See FIG.

In at least one configuration, a spring or biasing member 22730 (leaf spring, coil spring, etc.) is mounted or secured within the channel 22310 to lock the anvil lock 22702 so that the anvil lock tab 22710 thereon rests on the anvil mounting portion 22410. It can be configured to bias distally DD into a locking position that is aligned with locking lug 22413 to prevent closure of anvil 22400 . When a suitable or matching surgical staple cartridge 22600 is operably loaded within channel 22310 , anvil lock release mechanism or tab 22630 engages contoured surface 22714 on actuation tab 22712 of anvil lock 22702 . Surgical staple cartridge 22600 is then moved proximally to load cartridge 22600 within channel 22310 . As surgical staple cartridge 22600 is moved proximally, anvil lock release mechanism 22630 contacts actuation tab 22712 of anvil lock 22702, causing anvil lock 22702 to engage locking lug 22413 on anvil attachment portion 22410. out of blocking alignment with the anvil 22400 and bias proximally to an unlocked position that allows the anvil 22400 to pivot closed. When surgical staple cartridge 22600 is removed from channel 22310, spring 22730 biases anvil lock 22702 distally back to the locked position. FIG. 35 shows the contoured proximal end 22632 of the anvil unlocking mechanism 22630 formed on the right side of the proximal end portion 22604 of the cartridge body 22602 and the matching contoured anvil lock 22702 on the actuation tab 22712. Surface 22714 allows cartridge 22600 to maintain unlocking interaction between unlocking mechanism 22630 and actuation tab 22712 even when cartridge 22600 is mounted at mounting angle IA with respect to central axis EA of end effector 22300. It shows that it is possible to facilitate See FIG.

FIG. 36 illustrates attempting to use a non-conforming cartridge 22600X that does not have an unlocking mechanism to move the anvil lock 22702 from the locked position to the unlocked position. As shown in FIG. 36, lockout tabs 22710 are in blocking alignment with locking lugs 22413 on anvil 22400 to prevent closure of anvil 22400 even after cartridge 22600X has been installed within channel 22310 .

FIG. 37 shows another surgical end effector 22300' which may be substantially identical to the surgical end effector 22300 described above except for the differences described below. End effector 22300' is configured to operatively support a staple cartridge 22600' substantially identical to cartridge 20600 and includes an anvil unlocking mechanism or tab 22630' having a curvilinear proximal end surface 22632'. include. In the illustrated example, anvil lock 22702' is formed on its proximal end 22711' and is configured for locking interaction with locking lug 22413' formed on anvil attachment portion 22410 of anvil 22400. It includes an elongate body portion 22706' having a tab 22710'. Into the distal end 22712' of the anvil lock 22702' is a curved ridge configured to substantially match or mate with the curved proximal end surface 22632' on the anvil unlocking mechanism 22630' in the manner described above. A shaped working surface 22714' is formed. A spring or biasing member 22730′ (leaf spring, coil spring, etc.) is mounted or secured within channel 22310′ to engage anvil lock 22702′ with anvil lock tab 22710′ thereon locking lug on anvil mounting portion 22410. 22413' and can be configured to bias distally DD into a locked position that prevents closure of the anvil 22400. FIG.

When a suitable or matching surgical staple cartridge 22600' is operably loaded into channel 22310', anvil lock release mechanism or tab 22630' engages contoured surface 22714' of anvil lock 22702'. Cartridge 22600' is then moved proximally PD to load cartridge 22600' into channel 22310'. As cartridge 22600' moves proximally, anvil lock release mechanism 22630' contacts the distal end of anvil lock 22702', releasing anvil lock 22702' and anvil lock tab 22710' on anvil attachment portion 22410. Out of blocking alignment with locking lug 22413', it biases proximally to an unlocked position that allows anvil 22400 to pivot closed. When cartridge 22600' is removed from channel 22310', spring 22730' biases anvil lock 22702' distally back to the locked position. As shown in FIG. 37, compared to the anvil lock 22702 described above, the anvil lock 22702' has a more rigid body portion 22706'. In at least one example, clearance notches 22709' are provided in body portion 22706' to provide sufficient clearance for locking lugs 22413' when anvil 22400 is pivoted to the closed position. Additionally, a channel stop 22313' is formed on the bottom 22312' of the channel 22310' to contact the proximal end 22711' of the anvil lock 22702' when the anvil lock 22702' is in the unlocked position to lock the anvil lock. It is configured to prevent further proximal movement of 22702' and to keep locking lugs 22413' aligned with clearance notches 22709' in anvil lock 22702' during closure of anvil 22400.

FIG. 38 shows another surgical end effector 22300″, which may be substantially identical to the surgical end effector 22300′ described above, except for the differences described below. End effector 22300″ includes: An anvil 22400" includes an elongated channel 22310" pivotally supported thereon. The channel 22310'' is configured to operatively support a surgical staple cartridge 22600 that mates with the staple-forming lower surface of the anvil 22400'', the surgical staple cartridge 22600 being operatively mounted within the end effector 22300''. Anvil locking system 22700" is employed that is configured to prevent closure of anvil 22400" when not in place. In the example shown, anvil locking system 22700" is higher than the proximal portion of body 22706". An anvil lock 22702'' including a body portion 22706'' having a distal end portion 22712''. When the anvil lock 22702'' is in its distal-most locked position, a portion of the anvil 22400'' contacts the taller distal end portion 22712'' to prevent closure of the anvil 22400''. In the distal end portion 22712'' of the anvil lock 22702'', there is provided a contoured proximal end face 22632 on the anvil unlocking mechanism 22630 formed on the cartridge 22600 in the manner described above. A spring or biasing member 22730'' (such as a leaf spring, coil spring, etc.) is mounted or secured within the channel 22310'' to provide an anvil lock 22702''. can be configured such that the distal end portion 22712" is in blocking alignment with the corresponding portion of the anvil 22400" to bias the anvil 22400" in the distal direction DD to a locked position to prevent closure.

When a suitable or matching surgical staple cartridge 22600 is operably loaded within channel 22310", anvil unlocking mechanism 22630 on cartridge 22600 engages a curvilinear shape on distal end 22712" of anvil lock 22702". engage surface 22714''. Cartridge 22600 is then moved proximally to seat cartridge 22600 within channel 22310″. As cartridge 22600 moves proximally, anvil unlock mechanism 22630 engages anvil lock 22702″ distally. contacting the end 22712" and allowing the anvil lock 22702" to pivot the anvil 22400" to a closed position with the distal end portion 22712" out of blocking alignment with the corresponding portion of the anvil 22400". When the cartridge 22600 is removed from the channel 22310", the spring 22730" biases the anvil lock 22702" distally back to the locked position. As further shown in FIG. 38, a channel stop 22313" is formed on the bottom 22312" of the channel 22310" and contacts the proximal end 22711" of the anvil lock 22702" to allow the cartridge 22600 to move proximally. It is configured to prevent over-insertion into the end effector 22300″.

39 and 40 show another surgical end effector 23300 that is similar to other surgical end effectors described herein except for various differences described below. End effector 23300 comprises an elongated channel 23310 with an anvil 23400 pivotally supported thereon. Channel 23310 is configured to operably support a surgical staple cartridge 22600 that fits against the staple-forming lower surface of anvil 23400 such that anvil 23400 is operable when cartridge 22600 is not operably mounted within end effector 23300 . It employs an anvil locking system 23700 configured to prevent closure of the. In the illustrated example, anvil locking system 23700 includes anvil lock 23702 that includes body portion 23706 having distal end portion 23712 . Configured within the distal end portion 23712 of the anvil lock 23702 to substantially match or mate with the contoured proximal end surface 22632 on the anvil unlocking mechanism 22630 formed on the cartridge 22600 in the manner described above. A contoured working surface 23714 is formed. A spring or biasing member 23730 is secured within channel 23310 and is configured to bias anvil lock 23702 distally DD to the "locked" position.

In the illustrated example, the anvil 23400 includes an elongated anvil body 23402 and an anvil attachment portion 23410 configured to interact with the end effector closure tube 3050 (FIG. 5) in the manner described above. Anvil 23400 is pivotally mounted on elongated channel 22310 by a pair of laterally extending trunnion formations 23412 received in corresponding trunnion slots 23320 formed in the upstanding sidewalls of channel 23310 . At least one trunnion formation 23412 includes laterally projecting actuator lobes 23414 that define actuator ledges 23416 . Trunnion pins 23418 project outwardly from actuator lobes 23414 and are sized to translate and pivot within corresponding trunnion slots 23320 .

At least one trunnion slot 23320 includes an arcuate actuation portion 23322 and a locking offset portion 23324 formed at a proximal end 23321 of the trunnion slot 23320, as shown in FIG. FIG. 39 shows the insertion of cartridge 22600 into elongated channel 23310. FIG. To install cartridge 22600 within elongate channel 23310, anvil 23400 is first moved to an open position. This may be accomplished by actuating the closure system to move the end effector closure tube 3050 (FIG. 5) in the proximal direction PD. As closure tube 3050 moves proximally, closure tube 3050 interacts with opening tabs 23411 formed on anvil attachment portion 23410 . As the closure tube 3050 interacts with the anvil mounting portion 23410, the anvil 23400 translates proximally and begins to pivot open, so that when the anvil 23400 reaches its fully open position, the trunnion formation 23412 translates down the arcuate actuation portion 23322 of the corresponding trunnion slot 23320 and into the proximal end 23321 of the trunnion slot 23320 .

During loading of a suitable or matching surgical staple cartridge 22600 into channel 23310 , anvil lock release mechanism or tab 22630 mates with contoured surface 23714 on distal end 23712 of anvil lock 23702 . Cartridge 22600 is then moved proximally to load cartridge 22600 into channel 22310 . As the cartridge 22600 moves proximally, the anvil unlocking mechanism 22630 contacts the distal end 23712 of the anvil lock 23702 and urges the anvil lock 23702 proximally an unlocking distance UD, causing the anvil lock body The proximal end 23710 of 23706 is engaged with at least one actuator lobe 23414 on the trunnion formation 23412 such that the trunnion formation 23412 corresponds when a closing motion is applied to the anvil mounting portion 23410. Arcuate actuation portion 23322 of trunnion slot 23320 is moved to a position where it can be translated upwardly. In other words, the proximal end 23710 of the anvil lock 23702 prevents the trunnion formation 23412 from entering the locking offset portion 23324 formed at the proximal end 23321 of the trunnion slot 23320 so that the trunnion formation 23412 is positioned against the trunnion. Allows passage into arcuate actuation portion 23322 of slot 23320 .

FIG. 40 illustrates attempting to insert a non-conforming cartridge 22600X that does not have the necessary unlocking mechanism or tab 22630 to move the anvil lock 23702 out of the distal locked position. Anvil locking system 23700 prevents anvil 23400 from closing if a user attempts to close anvil 23400 after installing an incompatible cartridge 22600X in channel 23310 . For example, to close the anvil 23400, the closure system is activated to move the closure tube (or other closure member) distally into operative contact with the anvil attachment portion 23410 of the anvil 23400 and thereon. Add closing motion. Initial application of a closing motion to the anvil mounting portion 23410 causes the anvil mounting portion 23410 to move downward (arrow DL in FIG. 40) and the anvil trunnion formation 23412 to lock offset portion 23324 formed in the trunnion slot 23320. enter. Thus, anvil 23400 is prevented from closing because anvil trunnion formation 23412 cannot translate into arcuate actuation portion 23322 of the corresponding trunnion slot 23320 during application of closing motion to anvil 23400 and anvil 23400. be done.

FIG. 41 shows a portion of an alternative anvil 23400' including an anvil mounting portion 23410' having a trunnion formation 23412' formed thereon. Each trunnion formation 23412' includes a laterally projecting actuator lobe 23414' that defines an actuator ledge 23416' configured to interact with the anvil locking system 23700 in the manner described above. As shown in FIG. 41, the actuator ledge 23416' is vertically offset (by a distance OD) from the bottom surface 23415' of the anvil mounting portion 23410'. Trunnion pins 23418' project outwardly from actuator lobes 23414' and are sized to translate and pivot within corresponding trunnion slots 23320. In this example, trunnion pin 23418' has a trunnion pin diameter TRD approximately equal to width LW of actuator lobe 23414'.

FIG. 42 shows a portion of an alternative anvil 23400" including an anvil mounting portion 23410" having a trunnion formation 23412" formed thereon. laterally projecting actuator lobes 23414'' defining actuator ledges 23416'' configured to interact with the actuator lobes 23414''. As shown in FIG. 42, the actuator ledge 23416" occupies the same area (eg, not offset) as the bottom edge 23415" of the anvil mounting portion 23410". and is sized to translate and pivot within a corresponding trunnion slot 23320. In this example, the trunnion pin 23418" has a trunnion pin diameter TRD' approximately equal to the width LW' of the actuator lobe 23414'. have

43 is a partial cross-sectional end view of surgical end effector 24100 with anvil 24400 pivotally supported on elongated channel 24310. FIG. Anvil 24400 includes an anvil mounting portion 24410 having a trunnion formation 24412 formed thereon. Each trunnion formation 24412 includes a laterally projecting actuator lobe 24414 defining a bottom lobe surface 24416 configured to interact with the anvil locking system 24700 in the manner described above. As shown in FIG. 44, the bottom lobe surface 24416 is vertically offset (by a distance OD ₁ ) from the bottom surface 24415 of the anvil mounting portion 24410. As shown in FIG. A trunnion pin 24418 projects outwardly from the actuator lobe 24414 and is sized to translate and pivot within a corresponding trunnion slot 24320 formed within the elongated channel 24310 . In this example, trunnion pin 24418 has a trunnion pin diameter TRD ₁ approximately equal to width LW ₁ of actuator lobe 24414 .

Channel 20310 includes a channel bottom 24312 and a pair of upstanding sidewalls 24314 . Channel 24310 may be coupled to elongated shaft assembly 1200 (FIG. 5) by a channel attachment mechanism 20340 that may facilitate articulation thereof about articulation joint 3020 (FIG. 5). FIG. 45 shows a portion of the proximal end 24316 of channel 24310. FIG. In one example, each channel wall 24314 has a trunnion slot 24320 formed therein. In the illustrated configuration, a lobe ledge 24340 is formed in each channel wall 24314 such that the top surface 24342 of the lobe ledge 24340 occupies the same area as the bottom surface 24321 of the corresponding trunnion slot 24320 . Each trunnion 24418 is received within a corresponding trunnion slot 24320 and is free to rotate and translate therein.

45, a portion of anvil lock 24702 of anvil lock system 24700 is shown. The anvil lock 24702 operates similarly to the anvil lock 20702 described above and includes a lockout body 24706 having an actuator tab (not shown) formed on its distal end that is accessible from a compatible cartridge. configured to contact an unlocking mechanism projecting in the position direction. The anvil lock 24702 may be fabricated from spring steel or other suitable metal and is adapted to fit within a transverse spring mounting slot (not shown) provided in the body portion of the channel mounting mechanism (not shown). includes a proximal biasing arm 24704 that can be configured to Anvil lock 24702 has upwardly extending anvil lockout tabs 24710 protruding therefrom and configured to extend above corresponding lobe ledges 24340 and contact corresponding lobes 24414, as described below. Including further.

45 and 46 show anvil lock 24702 in a locked position with anvil 24400 pivoted to the open position. This may be the case if the cartridge is not inserted into channel 24310, or if the cartridge is not compatible (e.g., does not have the proper anvil unlocking mechanism required to bias the anvil lock spring proximally, among other things). cartridge) is inserted into channel 24310. When anvil lock 24702 is in the distal locked position shown in FIGS. 45 and 46, if a user inadvertently attempts to close anvil 24400, corresponding lobe 24414 contacts anvil lockout tab 24710, causing anvil 24400 to move to the closed position. to prevent it from pivoting. 47 and 48 show the position of the anvil lock 24702 in the proximal unlocked position with the anvil lockout tab 24710 positioned proximal of the lobe 24414 to allow the lobe 24414 to pivot to the closed position. indicate.

FIG. 49 is a partial cross-sectional end view of surgical end effector 24100' with anvil 24400' pivotally supported on elongated channel 24310'. Anvil 24400' includes an anvil mounting portion 24410' having a trunnion formation 24412' formed thereon. Each trunnion formation 24412' includes a laterally projecting actuator lobe 24414' defining a bottom lobe surface 24416' configured to interact with the anvil locking system 24700' in the manner described above. As shown in FIG. 50, the bottom lobe surface 24416' occupies the same area as the bottom surface 24415' of the anvil mounting portion 24410'. Trunnion pins 24418' project outwardly from actuator lobes 24414' and are sized to translate and pivot within corresponding trunnion slots 24320' formed in elongate channel 24310'. In this example, the trunnion pin 24418' has a trunnion pin diameter _TRD2 less than the width _LW2 of the actuator lobe 24414'.

Channel 20310' includes a channel bottom 24312' and a pair of upstanding sidewalls 24314'. Channel 24310' may be coupled to elongated shaft assembly 1200 (Fig. 5) by a channel attachment mechanism 20340 that may facilitate articulation thereof about articulation joint 3020 (Fig. 5). FIG. 51 shows a portion of the proximal end 24316' of channel 24310'. In one example, a trunnion slot 24320' is formed in each channel wall 24314'. In the illustrated configuration, a lobe ledge 24340' is formed in each channel wall 24314' such that the top surface 24342' of the lobe ledge 24340' is vertically offset from the bottom surface 24321' of the corresponding trunnion slot 24320' by an offset distance OSD. there is Offset distance OSD may be approximately equal to distance TSD between trunnion pin 24418' and bottom lobe surface 24416'. See FIG. Each trunnion pin 24418' is received within a corresponding trunnion slot 24320' and is free to rotate and translate therein.

51, a portion of anvil lock 24702' of anvil lock system 24700' is shown. The anvil lock 24702' operates similarly to the anvil lock 20702 described above and includes a lockout body 24706' having an actuator tab (not shown) formed on its distal end that conforms to the It is configured to contact an unlocking mechanism protruding proximally from the cartridge. The anvil lock 24702' may be fabricated from spring steel or other suitable metal and is mounted within a transverse spring mounting slot (not shown) provided in the body portion of the channel mounting mechanism (not shown). includes a proximal biasing arm 24704' configurable to. Anvil lock 24702' projects therefrom and extends above corresponding lobe ledge 24340' and upwardly extending anvil lockout tab 24710 configured to contact corresponding lobe 24414' as described above. ' further includes.

FIG. 51 shows anvil lock 24702' in a locked position with anvil 24400 pivoted to an open position. This may be the case if the cartridge is not inserted into the channel, or if a non-compliant cartridge (e.g., a cartridge that, among other things, does not have the proper anvil unlocking mechanism necessary to bias the anvil lock spring proximally). ) is inserted into channel 24310′. When anvil lock 24702' is in the distal locked position shown in FIG. 45, if a user inadvertently attempts to close anvil 24400', corresponding lobe 24414' contacts anvil lockout tab 24710', causing anvil 24400' to close. Prevents pivoting to the closed position. When a matching surgical staple cartridge is loaded into the end effector 24100', the anvil lock 24702' is biased to the unlocked position (see, eg, FIG. 47) and the anvil 24400' is free to move to the closed position. pivot.

FIG. 52 shows a portion of a surgical end effector 24100" comprising an anvil 24400" pivotally supported on an elongated channel 24310". The anvil 24400" has a trunnion formation 24412" formed thereon. Includes anvil mounting portion 24410''. As shown in FIGS. 53 and 54, each trunnion formation 24412" is laterally projecting defining a bottom lobe surface 24416" configured to interact with the anvil locking system 24700" in the manner described above. with actuator lobe 24414''. As shown in FIG. 53, the actuator lobe 24414'' and the bottom lobe surface 24416'' of the actuator lobe 24414'' are aligned with the end effector axis EA and the bottom edge 24419'' of the anvil attachment portion 24410'' and/or the bottom 24312 of the channel 24310''. 53, the bottom lobe surface 24416'' is parallel to the lobe axis LBA, which is positioned at a lobe angle LA to the end effector axis EA. is. A trunnion pin 24418'' projects outwardly from the actuator lobe 24414'' and is sized to translate and pivot within a corresponding trunnion slot 24320'' formed in the elongated channel 24310''. See FIG. In this example, the trunnion pin 24418" has a trunnion pin diameter _TRD3 equal to the width _LW3 of the actuator lobe 24414".

Referring to FIG. 55, the channel 24310'' includes a channel bottom 24312'' and a pair of upstanding sidewalls 24314''. ) to the elongated shaft assembly 1200 (FIG. 5) by a channel attachment mechanism 20340 that can facilitate articulation thereof about the center of the shaft. FIG. 55 shows a portion of the proximal end 24316'' of the channel 24310''. In one example, a trunnion slot 24320'' is formed in each channel wall 24314''. In the illustrated configuration, a lobe ledge 24340" is formed in each channel wall 24314" such that a proximal surface portion 24344" of the top surface 24342" of the lobe ledge 24340" occupies the same area as the bottom surface 24321" of the corresponding trunnion slot 24320". In the illustrated configuration, the bottom surface 24321 ″ of the trunnion slot 24320 ″ is substantially parallel to the end effector axis EA and/or the bottom 24312 ″ of the channel 24310 ″. As shown in FIG. A "slanted portion 24346" extends distally from the proximal surface portion 24344" at an angle TSA and terminates in a horizontal distal surface portion 24348". In one configuration, for example, the distal surface portion 24348" is substantially parallel to the end effector axis EA and/or the bottom 24312" of channel 24310", angle TSA=angle LA. However, in other embodiments, angle TSA may differ from angle LA. Each trunnion 24418" is received within a corresponding trunnion slot 24320" and is free to rotate and translate therein.

55 and 56, a portion of anvil lock 24702'' of anvil lock system 24700'' is shown. The anvil lock 24702'' operates similarly to the anvil lock 20702 described above and includes a lockout body 24706'' having actuator tabs (not shown) formed on its distal end, which actuator tabs conform to the It is configured to contact an unlocking mechanism protruding proximally from the surgical staple cartridge. The anvil lock 24702″ may be fabricated from spring steel or other suitable metal and is mounted within a transverse spring mounting slot (not shown) provided in the body portion of the channel mounting mechanism (not shown). includes a proximal biasing arm 24704'' configurable to. The anvil lock 24702'' projects therefrom and is configured to extend above the distal surface portion 24348'' of the corresponding lobe ledge 24340'' so as to be at the same or equal height as the proximal surface portion 24344'' of the lobe ledge 24340''. Further includes an upwardly extending anvil lockout tab 24710'' configured to.

FIG. 55 shows anvil lock 24702''' in a distal locked position with anvil 24400'' pivoted to an open position. or an incompatible surgical staple cartridge (e.g., among others, a surgical staple cartridge that does not have the appropriate anvil unlocking mechanism necessary to bias the anvil lock 24702" proximally) inserted into the channel 24310". can occur if When the anvil lock 24702″ is in that position, an anvil trunnion 24418″ is located at the proximal end of each trunnion slot 24320″ and the bottom lobe surface 24416″ of at least one lobe 24414″ is aligned with the corresponding lobe ledge 24340″. and on the anvil lockout tab 24710''. When anvil lock 24702" is in the distal locked position shown in FIGS. 52 and 55, if a user inadvertently attempts to close anvil 24400", anvil lockout tab 24710" will cause lobe 24414" to slant from lobe ledge 24340". Prevents pivoting downward onto face portion 24346'', thereby preventing anvil 24400'' from pivoting to the closed position. See FIG. When loaded into 24100", the anvil lockout mechanism thereon biases anvil lock 24702" proximally to an unlocked position. See FIGS. 56 and 57. Anvil lock 24702". is in the proximal unlocked position, the anvil lockout tab 24710" is locked proximal to the ramp 24346" on the lobe ledge 24340", thereby causing the lobe 24414" to pivot downward to unlock the anvil 24400". allow it to close.

FIG. 58 shows a proximal portion of another anvil 24400''' configured to be pivotally supported within an elongated channel 24310''' similar to channel 24310'' except for the differences described below. The anvil 24400''' includes an anvil mounting portion 24410''' having a trunnion formation 24412'' formed thereon. Each trunnion formation 24412''' has a laterally projecting actuator lobe 24414''' defining a bottom lobe surface 24416''' configured to interact with the anvil locking system 24700'' in the manner described above. The actuator lobe 24414''' as well as the bottom lobe surface 24416''' of the actuator lobe 24414''' are arranged at the same angle LA as described above for the actuator lobe 24414''. A trunnion pin 24418''' projects outwardly from the actuator lobe 24414''' and is sized to translate and pivot within a corresponding trunnion slot 24320''' formed in the elongated channel 24310'''. ing. See FIG. In this example, the trunnion pin 24418''' has a trunnion pin diameter TRD ₄ equal to the width LW ₄ of the actuator lobe 24414'''.

As shown in FIG. 59, the channel 24310''' includes a channel bottom 24312''' and a pair of upstanding sidewalls 24314'''. Channel 24310''' may be coupled to elongate shaft assembly 1200 (FIG. 5) by a channel attachment mechanism 20340 that may facilitate articulation thereof about articulation joint 3020 (FIG. 5). FIG. 59 shows a portion of the proximal end 24316''' of the channel 24310'''. In one embodiment, a trunnion slot 24320''' is formed in each channel wall 24314'''. In the illustrated configuration, the lobe bredges 24340''' are arranged such that the top surface 24342''' of the lobe bredge 24340''' is vertically offset from the bottom surface 24321''' of the corresponding trunnion slot 24320''' by an offset distance OSD ₁ . is formed in each channel wall 24314'''. Offset distance OSD ₁ may be approximately equal to the distance between trunnion 24418''' and bottom lobe surface 24416'''. In the illustrated configuration, the top surface 24342''' of the lobe bredge 24340''' is identical to the top surface 24342'' of the lobe bredge 24340'' and the proximal portion 24344' parallel to the bottom surface 24321''' of the trunnion slot 24320'''. '', and an inclined surface 24346''' and a distal surface 24348'''.

The anvil lock system 24700'' operates in a similar manner to prevent the anvil 24400''' from closing. If a cartridge is not present within the channel 24310''' or an incompatible cartridge (e.g., anvil lock spring cartridge) is inserted into channel 24310''', the anvil lock tab 24710'' will be in its most distal locked position. , holding anvil 24400''' in the open position by preventing corresponding actuator lobe 24414''' from pivoting downward onto ramp 24346'''. When a matching surgical staple cartridge is loaded into the end effector 24100''', the anvil lockout mechanism thereon biases the anvil lock 24702'' proximally to the unlocked position. Anvil lock 24702 '' is in the proximal unlocked position, the anvil lockout tab 24710'' is locked proximal to the ramp 24346''' on the lobe ledge 24340''', thereby pivoting the lobe 24414''' downward. movement to allow anvil 24400''' to close.

60 and 61 are identical in _construction and operation to anvil 24400 described above, except that trunnion _{formation 24412A} is vertically offset from bottom edge _24415A of anvil attachment portion 24410A of anvil 24400A. shows another anvil _24400A which is FIG. ₆₂ is identical in construction and operation to anvil 24400' described above, except that trunnion formation _24412B is vertically offset from bottom edge _24415B of anvil mounting portion _24410B of anvil 24400B. Another anvil _24400B is shown.

The examples shown in FIGS. 41-62 interact with the anvil locking mechanism such that the interaction between the anvil locking mechanism and the corresponding lobe structure facilitates positioning of the anvil trunnions within their respective trunnion slots. A trunnion arrangement is employed with lobed structures of various shapes and configurations. This placement of the lobe structure allows a closing motion to be applied to the anvil to close it when a matching surgical staple cartridge is loaded into the end effector. When a non-conforming surgical staple cartridge is loaded into the end effector, the anvil locking mechanism holds the corresponding trunnion structure in a position that prevents the anvil from closing upon application of a closing motion to the anvil. Thus, although the initial position of the trunnion component prevents closure, loading of the appropriate or matching surgical staple cartridge into the channel will reposition the trunnion component to cause closure. The various lobe mechanisms described herein are also generally more robust than conventional trunnion configurations, which can provide improved anvil reliability.

63-69 illustrate a surgical end effector 25300 that can be used in connection with, for example, the powered surgical instrument 1010 described above. Surgical end effector 25300 comprises an anvil 25400 pivotally supported on elongate channel 25310 configured to operatively support surgical staple cartridge 25600 . The anvil 25400 is movable between open and closed positions by interacting with an axially movable closure member in various manners disclosed herein. In the illustrated example, anvil 25400 includes anvil body 25402 and anvil attachment portion 25410 . The anvil mounting portions 25410 are a pair of laterally extending trunnion slots operably received in corresponding trunnion slots provided in the upstanding sidewalls 25314 of the channel 25310 in various manners disclosed herein. Includes trunnion 25412. As described above with respect to end effector 1300, anvil 25400 may be pivoted between open and closed positions by interaction with end effector closure tube 3050 in various manners described herein. good. For example, end effector closure tube 3050 may be moved axially by actuation of closure trigger 1032 of surgical instrument 1010 . In other configurations, the end effector 25300 and the shaft assembly to which it is attached may operably interface with a robotic system as described in detail in many of the references incorporated herein by reference. good. In such applications, the end effector closure tube 3050 may be advanced and retracted axially through actuation of the closure control system of the robotic system.

In the illustrated configuration, distal movement of the end effector closure tube 3050 causes the distal end 3051 of the end effector closure tube 3050 to operatively interact with a camming surface 25411 formed on the anvil mounting portion 25410 to engage the anvil. Cam the 25400 to the closed position. The end effector closure tube 3050 can be configured to interact with various formations, ledges or tabs to impart an opening motion to the anvil 25400 as the end effector closure tube 3050 is axially retracted in the proximal direction. can. Further details can be found in various other references incorporated herein by reference.

The elongated channel 25310 is attached to the elongated shaft assembly 1200 (FIG. 5) by a channel attachment mechanism 20340 that can facilitate its articulation about the articulation joint 3020 (FIG. 5) in various ways described herein. 5). The illustrated example is attached to the distal end of firing member beam 1900 (FIG. 5) and configured to operably interface with a cam assembly within surgical staple cartridge 25600 loaded within channel 25310. Further includes a firing member 20500 (Fig. 20). To ensure that a matching surgical staple cartridge 25600 is loaded into the end effector 25300 prior to closing the anvil 25400, the end effector employs a closure lockout system 25700. In the illustrated example, the closure lockout system 25700 is configured to prevent distal movement of the end effector closure tube 3050 if a matching cartridge 25600 is not properly seated within the channel 25310. In one example, the closure lockout system 25700 comprises a closure lock 25702 configured to move between locked and unlocked positions in response to installation of a compatible surgical staple cartridge 25600. Figures 65-69 illustrate one form of closure lock 25702, which may be fabricated from spring steel or other suitable metal, and includes a body portion 25706 having a pivot hole in the body portion 25706. Pivotally pinned to body portion 20342 of channel attachment mechanism 20340 by pivot pin 25709 extending through 25707 . Closure lock 25702 further includes a proximal biasing arm 25704 that can be configured to fit within a slot (not shown) provided in body portion 20342 of channel attachment mechanism 20340 . Such a configuration serves to bias the closure lock 25702 downward within the channel 25310 .

65 and 66, in the illustrated example, the closure lock 25702 further includes a blocking mechanism 25710 projecting from the bottom of the body portion 25706 and extending laterally outward. The blocking mechanism 25710 is positioned to block distal advancement of the end effector closure tube 3050 when the closure lock 25702 is in the locked position shown in FIG. When the closure lock 25702 is in the unlocked position shown in FIG. 66, the blocking mechanism 25710 is moved away from the blocking position to allow distal advancement of the end effector closure tube 3050.

67, the closure lock 25702 has a proximally extending actuator portion 25712 to be engaged by a closure unlocking mechanism 25630 formed on the proximal end 25604 of a compatible surgical staple cartridge 25600. further includes In at least one configuration, surgical staple cartridge 25600 comprises an elongated cartridge body 25602 sized to be removably mounted within elongated channel 25310 . The cartridge body 25602 includes a cartridge slot 25608 that extends from a proximal end portion 25604 of the cartridge body 25602 to a distal end portion 25606 (FIG. 64). Cartridge body 25602 further includes a cartridge deck surface 25610 that faces staple forming lower surface 25404 of anvil 25400 when cartridge 25600 is installed within channel 25310 and anvil 25400 is pivoted to a closed position. Although not shown in FIG. 67, surgical staple cartridge 25600 has multiple (usually three) rows of surgical staple pockets on either side of cartridge slot 25608 that opens through cartridge deck surface 25610. good too. Each staple pocket may have a staple driver (not shown) associated therewith that supports surgical staples or fasteners (not shown) thereon. In at least one example, cartridge body 25602 is molded from a polymeric material having staple pockets molded or machined therein. In one configuration, the staple pockets also open through the bottom of the cartridge body 25602 to facilitate attachment of the drivers and fasteners to their respective pockets. The cartridge pan 25620 is attached to the bottom of the cartridge body 25602 once the drivers and fasteners are inserted into their respective staple pockets. Cartridge pan 25620 , in particular, when attached, can prevent the drive and fasteners from falling out of the bottom of cartridge body 25602 during handling and installation of cartridge 25600 into elongated channel 25310 . As described above with respect to cartridge 20040, cartridge 25600 operably supports a cam assembly therein. The cam assembly comprises a series of spaced apart cam members configured to move axially within corresponding cam slots 25609 formed on opposite sides of cartridge slot 25608 within cartridge body 25602 . The cam slots 25609 are driven within the cartridge body 25602 as the cam assembly is driven through the staple cartridge 25600 from a starting position within the proximal end portion 25604 of the cartridge body 25602 to an ending position within the distal end portion 25606. aligned with corresponding rows of portions to facilitate cam contact with corresponding cam members.

FIGS. 63 and 68 show a surgical end effector 25300 without a surgical staple cartridge installed therein. As shown in FIG. 68, the proximal biasing arm 25704 has biased the closure lock 25702 downward within the channel 25310 such that the blocking mechanism 25710 is in contact with the distal end 3051 of the end effector closure tube 3050. Move to blocking alignment (locked position). When the user activates the closure system to distally move the end effector closure tube 3050 , the blocking mechanism 25710 prevents distal advancement of the end effector closure tube 3050 thereby imparting a closing motion to the anvil 25400 . To prevent. 67, in at least one configuration, staple cartridge 25600 is unlocked with actuation tabs 25712 formed on the distal end of closure lock 25702 when cartridge 25600 is operably mounted within elongated channel 25310. It includes an anvil unlocking mechanism or tab 25630 protruding proximally from the cartridge body 25602 that is aligned for engagement. In one example, the unlocking mechanism 25630 has a slightly angled surface 25632 configured to operatively interact with an angled surface 25713 on the actuation tab 25712, where the angled surfaces 25632 and 25713 engage. When mated, closure lock 25702 is pivoted upward. When the closure lock 25702 is pivoted upward to the unlocked position, the blocking mechanism 25710 is moved out of blocking alignment with the end effector closure tube 3050 . See FIG.

64 and 69 show a surgical end effector 25300 having a matching surgical staple cartridge 25600 operably mounted within an elongated channel 25310. FIG. As shown in FIG. 69, ramps 25632 on unlocking mechanism 25630 on staple cartridge body 25602 contact ramps 25713 (shown in FIG. 68) on actuating tabs 25712 on closure lock 25702 to engage the closure lock. 25702 to the unlocked position. In that position, the user can distally advance the end effector closure tube 3050 to apply a closing motion to the anvil 25400 . If the user attempts to install an improper cartridge that does not have the unlocking mechanism 25630 or a similar mechanism designed to disengage the closure lock 25702 in place, the user will be forced to remove the end effector closure tube 3050 from a distance. The anvil 25400 cannot be advanced to close the anvil 25400.

70 and 71 employ different closure locks 25702' configured to interact with the unlocking mechanism provided on the cam assembly 25650' within the surgical staple cartridge 25600'. 25300' shows a surgical end effector 25300' comprising an anvil 25400' pivotally supported on a channel 25310' substantially identical to the end effector 25300 described above, except that the end effector 25300' shown in FIG. As shown in FIGS. 70 and 71, the closure lock 25702' comprises an elongated body 25706' having a tapered actuator tab portion 25712' at its distal end. Body 25706' is pivotally attached to channel attachment mechanism 20340 and proximal biasing arm 25704' biases closure lock 25702' within channel 25310'.

FIG. 72 shows a surgical staple cartridge 25600' comprising an elongated cartridge body 25602' sized to be removably mounted within an elongated channel 25310'. The cartridge body 25602' includes a cartridge slot 25608' that extends from a proximal end portion 25604' to a distal end portion of the cartridge body 25602'. Cartridge body 25602' faces cartridge deck surface 25610' when cartridge 25600' is installed within channel 25310' and anvil 25400' is pivoted to the closed position. ' further includes. Although not shown in FIG. 72, the surgical staple cartridge 25600' has multiple (usually three) rows of surgical staple pockets on either side of the cartridge slot 25608' that opens through the cartridge deck surface 25610'. may have. Each staple pocket may have a staple driver (not shown) associated therewith that supports surgical staples or fasteners (not shown) thereon. In at least one example, cartridge body 25602' is molded from a polymeric material having staple pockets molded or machined therein. In one configuration, the staple pockets also open through the bottom of the cartridge body 25602' to facilitate attachment of the drivers and fasteners to their respective pockets. Cartridge pan 25620' is attached to the bottom of cartridge body 25602' when the drive and fasteners are inserted into their respective staple pockets. Cartridge pan 25620' in particular, when installed, can prevent the drive and fasteners from falling out of the bottom of cartridge body 25602' during handling and installation of cartridge 25600' into elongate channel 25310'. . A cam assembly 25650' is operably supported within cartridge body 25602'. In at least one configuration, the cam assembly 25650' is a series of spaced apart cams configured to move axially within corresponding cam slots 25609' formed on opposite sides of the cartridge slot 25608' in the cartridge body 25602'. A member 25652' is provided. The cam slot 25609' is driven through the staple cartridge 25600' from a starting position within the proximal end portion 25604' of the cartridge body 25602' to an ending position within the distal end portion of the cartridge body 25602'. Aligned with corresponding rows of drives in body 25602' to facilitate camming contact with corresponding cam members 25652'. In at least one example, the cam assembly 25650' is activated when the cartridge 25600' is operably mounted within the elongated channel 25310' and the cam assembly 25650' is in its unfired starting position within the cartridge 25600'. Additionally, a closure unlocking mechanism or tab projecting proximally from the cam assembly 25650' is aligned in non-locking engagement with an actuation tab 25712' formed at the distal end of the closure lock 25702'. 25660' included.

Returning to FIG. 71, in one example, the unlocking mechanism 25660' has a tapered nose portion 25662' configured to operatively interact with the actuation tab 25712' such that the tapered nose portion 25662' is actuated. Upon engagement with tab 25712', closure lock 25702' is pivoted upward. When the closure lock 25702' is pivoted upward to the unlocked position, the blocking mechanism 25710' on the closure lock 25702' is out of blocking alignment with the end effector closure tube 3050.

As shown in FIG. 72, the cartridge body 25602' may further include a locking safety device 25670' projecting proximally from the proximal end of the cartridge body 25602' and adjacent the tapered nose portion 25662'. The top surface 25672' of the lock safety device 25670' is angled to match the tapered nose portion 25662', but when the cam assembly 25650' is in its most proximal starting position, the tapered nose portion 25672' 25662' protrudes proximally beyond the end of lock safety 25670'.

FIG. 70 shows initial insertion of an unfired conforming surgical staple cartridge 25600' into channel 25310'. As shown in FIG. 70, tapered nose portion 25662' first contacts actuator tab portion 25712' on closure lock 25702'. The closure lock 25702 ′ remains biased downward to the locked position in which the blocking mechanism 25710 ′ of the closure lock 25702 ′ is in blocking alignment with the distal end 3051 of the end effector closure tube 3050 . As the cartridge 25600' is further proximally advanced within the channel 25310' to the loaded position, the tapered nose portion 25662' on the cam assembly 25650' engages the actuation tabs 25712' on the angled upper surface 25672' of the locking safety device 25670'. An upward upward lift allows the closure lock 25702 ′ to pivot to an unlocked position where the blocking mechanism 25710 ′ is out of blocking alignment with the distal end 3051 of the end effector closure tube 3050 . In that position, the user can distally advance the end effector closure tube 3050 to apply a closing motion to the anvil 25400'. Thus, in this embodiment, the closure locking system 25700' is actuated by the cam assembly 25650' only when the cam assembly 25650' is in the unfired starting position.

FIG. 73 shows insertion of staple cartridge 25600X with its cam assembly not in its proximal-most unfired position. This can occur, for example, if the user attempts to use a previously used staple cartridge 25600X. Since the cam assembly is not in its unfired starting position, there is no tapered nose portion to begin urging the closure lock 25702' into the upper position above the closure safety device 25670'. When cartridge 25600X is fully seated within channel 25310', actuating tab 25712' of closure lock 25702' is positioned below lower locking surface 25674'. The closure lock 25702 ′ remains in a locked position with its blocking mechanism 25710 ′ in blocking alignment with the distal end 3051 of the end effector closure tube 3050 . If the user inadvertently advances the end effector closure tube 3050 distally to close the anvil 25400', the distal end 3051 contacts the blocking mechanism 25710', causing the closure safety device 25670' to engage the closure lock 25702' to the closure load. further prevents upward pivoting to the unlocked position.

Figures 74 and 75 show a surgical end effector 25300" comprising an anvil 25400" substantially identical to the end effector 25300' described above, pivotally supported on a channel 25310". 25300" employs a closure lock system 25700" with a closure lock 25702". As shown in FIG. 76, the closure lock 25702'' comprises an elongated body 25706'' having an actuator tab portion 25712'' at its distal end. The body 25706'' includes a lower spring arm 25720'' mounted within a channel 25310''. including. A lower spring arm 25720'' is mounted to exert a downward biasing force on the closure lock 25702'' described below. As will be described in greater detail below, the closure lock 25702" is a vertically extending vertically configured locking lug 25414" formed on an anvil attachment portion 25410" of anvil 25400". Further includes an anvil locking tab 25710″. Additionally, closure lock 25702″ includes a proximal biasing spring 25704″ that serves to bias closure lock 25702″ in distal direction DD (FIG. 76). As shown in FIG. 74, the elongated channel 25310″ has a channel attachment mechanism 20340 that can facilitate its articulation about the articulation joint 3020 (FIG. 5) in various ways described herein. may be coupled to elongated shaft assembly 1200 (FIG. 5) by . As shown in FIG. is configured as

Similar to the closure of the anvil 25400' described above, distal movement of the end effector obturator tube causes the distal end of the end effector obturator tube to engage a camming surface 25411" formed on the anvil mounting portion 25410" of the anvil 25400". operably interact to cam the anvil 25400'' to the closed position. The end effector closure tube can be configured to interact with various formations, ledges, or tabs to impart an opening motion to the anvil 25400″ upon proximal axial retraction of the end effector closure tube. Further details can be found in various other references incorporated herein by reference.

FIG. 77 shows a surgical staple cartridge 25600" comprising an elongated cartridge body 25602" sized to be removably mounted within an elongated channel 25310". The cartridge body 25602" is a proximal end portion of the cartridge body 25602". 25604" to a distal end portion. Cartridge body 25602" has cartridge 25600" mounted within channel 25310" and anvil 25400" pivoted to a closed position. If so, it further includes a cartridge deck surface 25610' facing the staple forming lower surface 25404" of the anvil 25400". Although not shown in FIG. 77, the surgical staple cartridge 25600" opens through the cartridge deck surface 25610". There may be multiple (usually three) rows of surgical staple pockets on either side of the cartridge slot 25608″. Each staple pocket may have a staple driver (not shown) associated therewith that supports surgical staples or fasteners (not shown) thereon. In at least one example, cartridge body 25602' is molded from a polymeric material having staple pockets molded or machined therein. In one configuration, the staple pockets also open through the bottom of the cartridge body 25602" to facilitate attachment of the drivers and fasteners to their respective pockets. A cam assembly 25650" is operable within the cartridge body 25602". In at least one configuration, the cam assemblies 25650" are configured to move axially within corresponding cam slots 25609" formed on opposite sides of the cartridge slot 25608" in the cartridge body 25602". a series of spaced apart cam members 25652''. The cam slots 25609" are driven through the staple cartridge 25600" as the cam assembly 25650" is driven through the staple cartridge 25600" from a starting position within the proximal end portion 25604" of the cartridge body 25602" to a terminal position within the distal end portion. Aligned with corresponding rows of drives in body 25602" to facilitate camming contact with corresponding cam members 25652". is operatively mounted within the elongated channel 25310'' and the cam assembly 25650'' is in its unfired starting position within the cartridge 25600'', the actuation formed at the distal end of the closure lock 25702''. includes a closure unlocking mechanism or tab 25660'' projecting proximally from cam assembly 25650'' which is aligned in non-locking engagement with tab 25712''.

Returning to FIG. 77, in one example, the unlocking mechanism 25660'' has a tapered nose portion 25662'' configured to operatively interact with the actuation tab 25712'', the tapered nose portion 25662'' Upon engagement with the actuation tab 25712", the closure lock 25702" is moved upward against the downward biasing force exerted by the lower spring 25720". The closure lock 25702" pivots upward to the unlocked position. When done, the anvil locking tab 25710" on the closure lock 25702" is out of blocking alignment with the locking lug 25414" on the anvil mounting portion 24410".

FIG. 74 shows the initial insertion of an unfired conforming surgical staple cartridge 25600'' into the channel 25310''. As shown in FIG. 74, the tapered nose portion 25662'' of the cam assembly 25650'' has not yet interacted with the actuator tab portion 25712'' on the closure lock 25702''. The closure lock 25702" remains biased downward to the locked position in which the anvil lock tabs 25710" of the closure lock 25702" are in blocking alignment with the lock lugs 25414" on the anvil mounting portion 25410" of the anvil 25400". As the surgical staple cartridge 25600" is further proximally advanced to the loaded position within the channel 25310", the tapered nose portion 25662" on the cam assembly 25650" contacts the actuation tabs 25712", disengaging the closure lock 25702" from the anvil. The locking tabs 25710" are biased upward to the unlocked position out of alignment with the anvil locking lugs 25414". In that position, the user can close the anvil 25400″ by distally advancing the end effector closure tube to impart a closing motion to the anvil 25400″. Thus, in this embodiment, the closure locking system 25700'' is actuated by the cam assembly 25650'' only when the cam assembly 25650'' is in the unfired starting position. When removed, the lower springs 25720" on the closure lock 25702" force the closure lock 25702" downward into its locking position where the anvil locking tabs 25710" are in blocking alignment with the locking lugs 25414" on the anvil 25400". force.

FIG. 78 shows insertion of a staple cartridge 25600X″ having a cam assembly therein that is not in its most proximal, unfired position. and no tapered nose portion for upward biasing. The closure lock 25702' remains in a locked position with its anvil locking tab 25710'' in blocking alignment with the anvil locking lug 25414'' on the anvil 25400''. ″ contacts anvil lock tab 25710″ on closure lock 25702″, preventing anvil 25400″ from pivoting to the closed position.

FIGS. 79-83 show another cartridge that allows a surgical staple cartridge compatible with the end effector to be inserted into the end effector channel while providing another visual indication to the user that the cartridge has been fired. 25800 shows an alternative cartridge nose assembly 25800 that can be used with any of the cartridge and channel configurations disclosed herein to provide the mechanism. For example, cartridge nose assembly 25800 may be used with cartridge 25600 and channel 25310 of end effector 25300 (FIG. 64). In the illustrated configuration, cartridge nose assembly 25800 includes nose assembly body 25802 movably coupled to distal end 25606 of cartridge body 25602 . 81 and 82, the distal end portion 25606 of the cartridge body 25602 has a distally extending tapered portion 25605 receivable within a complementary nose notch 25804 in the nose assembly body 25802. include. Additionally, the nose assembly body 25802 is configured to include an axial alignment mechanism (not shown) that can be slidably supported within an axial groove 25607 provided in the distal end portion 25606 of the cartridge body 25602. ing.

A nose retainer latch arm 25810 extends proximally from the top of the nose assembly body 25802 into a latch cavity 25680 formed in the cartridge body 25602, as shown in FIGS. The nose assembly body 25802 is axially movable from a locked position shown in FIGS. 81 and 83 to an unlocked position shown in FIGS. When the nose assembly body 25802 is in the unlocked position, retention latches 25812 formed on the proximal ends of the retainer latch arms 25810 engage retention lugs 25682 formed on the distal end portion 25606 of the cartridge body 25602. , holds the cartridge nose assembly 25800 to the distal end 25606 of the cartridge body 25602 .

81 and 82, the nose assembly body 25802 frictionally engages a corresponding distally extending channel ledge 25317 formed at the distal end 25315 of the channel 25310 to allow the nose assembly 25800 to Also includes a proximally extending nose tab portion 25820 sized to retain the . As shown in FIGS. 83 and 84, the nose assembly body 25802 is a one-piece lug configured to interact with a spring lug 25684 formed on a distally extending tapered portion 25605 of the cartridge body 25602. A spring arm 25830 may also be included. Spring arm 25830 applies a distal biasing force BF to cartridge nose assembly 25800 to increase the frictional force between nose tab portion 25820 and channel ledge 25317 to retain cartridge nose assembly 25800 in the locked position.

In operation, cartridge nose assembly 25800 resides within channel 25310 when cartridge 25600 is in its unfired state and ready to be installed. To install an unfired cartridge 25600 within the end effector 25300, the cartridge body 25602 is placed within the channel 25310 and then proximally advanced to move the channel ledge 25317 into the nose tab portion, as shown in FIGS. 25820. As described above, when cartridge 25600 is unfired, cam assembly 25650 is in the most proximal starting position. During the firing process, cam assembly 25650 is driven within cartridge body 25602 to its most distal position. When the cam assembly 25650 reaches its most distal position, the central body portion 25651 of the cam assembly 25650 pushes the cartridge nose assembly 25800 with a sufficient amount of force to overcome the frictional force FF holding the cartridge nose assembly 25800 in the locked position. to axially move the cartridge nose assembly 25800 to the unlocked position. Alternatively, the user may disengage cartridge nose assembly 25800 by pulling cartridge nose assembly 25800 distally to the unlocked position. Once cartridge nose assembly 25800 is moved to the unlocked position, cartridge 25600 can be removed from elongated channel 25310 . Additionally, the distally extending cartridge nose assembly 25800 may provide a visual indication to the user that the cartridge has been fired (used).

85 and 86 show a portion of a surgical end effector 26300 employing a firing member 26120 configurable for distal advancement with a rotary firing system or an axially driven (non-rotary) firing system. . Specifically, the firing member 26120 is described in combination with any of the various end effector and firing drive system configurations disclosed herein and in various references incorporated herein by reference. It may be used in connection with any end effector arrangement and firing drive system arrangement.

85 and 86, the firing member 26120 includes a firing member body 26122 including a firing member lockout 26142 pivotally attached to the firing member body 26122. including system 26140; Firing member lockout 26142 includes a lockout body 26144 that spans firing member body 26122 and includes a pair of legs 26146 that are pivotally attached to firing member body 26122 . Lockout body 26144 further includes a sled latch 26148 configured to contact a cam sled or cam assembly 26650 operably supported within a staple cartridge (not shown). FIG. 85 shows the firing member 26120 in its most proximal starting position. A firing lockout hole 26315 is provided through the bottom 26312 of the elongated channel 26310 of the end effector 26300, as shown in FIGS. A lockout spring 26150 is mounted within the elongated channel 26310 such that the distal edge 26149 of the lockout body 26144 is forced into the firing lockout if a new, unfired staple cartridge is not properly loaded within the elongated channel 26310 . It is configured to bias firing member lockout 26142 downward into engagement with beveled distal edge 26317 of bore 26315 . In that position, if the user accidentally attempts to distally advance the firing member 26120, the firing member lockout 26142 prevents distal advancement of the firing member 26120 as shown in FIG.

The new unfired surgical staple cartridge includes a cam assembly 26650 located in a proximal origin or unfired position relative to the rows of staple drivers supported within the cartridge body. As used herein, the term "new unfired" means that all of the intended staples or fasteners of the staple cartridge are in their respective unfired positions and the cam assembly is in its proximal unfired starting position. It means that there is When a new, unfired surgical staple cartridge is properly seated within elongated channel 26310, proximally extending unlocking portion 26653 on cam assembly 26650 engages with threaded latch 26148 on firing member lockout 26142. Engage to pivot firing member lockout 26142 to an unlocked position where firing member lockout 26142 does not extend into firing lockout aperture 26315 of elongated channel 26310 . FIG. 85 shows the cam assembly 26650 in the starting position and the firing member 26120 free to be advanced distally by actuating the firing drive system.

Upon completion of the firing process, the cam assembly 26650 remains at the distal end of the staple cartridge (i.e., the "fired position") while the firing member 26120 opens the anvil so that the spent cartridge can be removed from the channel 26310. It may be pulled back to the starting position, so once the surgical staple cartridge has been used (e.g., fully fired), the cam assembly 26650 is not returned to its starting position. Attempting to remount within the end effector 26300 does not result in the cam assembly 26650 being in a starting position that allows the cam assembly 26650 to unlock the firing member lockout 26142. Accordingly, the firing member lockout system 26140 is referred to herein as "using It may also be referred to as a "dead cartridge lockout system".

Figures 87-90 show an anvil 26400 configured to be pivotally supported on a channel 26310 or similar channels of various types disclosed herein. 87-89, the cartridge body has been omitted for clarity. In the illustrated configuration, the anvil 26400 includes a cartridge verification system 26440 that can be configured to prevent firing of non-conforming cartridges installed within the cartridge. Anvil 26400 and cartridge verification system 26440 control distal advancement of firing member 26120 when firing member lockout 26142 has not been moved to the unlocked position through interaction with a corresponding cam assembly located within the surgical staple cartridge. It may be used in connection with a surgical end effector 26300 that employs a firing member 26120 equipped with an on-board firing member lockout system 26140 configured to prevent. Cartridge verification system 26440 is also used in conjunction with a surgical end effector employing an axially advancing (non-rotating) firing member with a firing member lockout system otherwise similar to firing member lockout system 26140. may

FIG. 90 shows a portion of surgical staple cartridge 26600 compatible with surgical end effector 26300. FIG. In at least one configuration, surgical staple cartridge 26600 comprises an elongated cartridge body 26602 sized to be removably mounted within an elongated channel of end effector 26300 . Cartridge body 26602 includes a cartridge slot 26608 that extends from a proximal end portion 26604 to a distal end portion of cartridge body 26602 . Cartridge body 26602 further includes a cartridge deck surface 26610 that faces staple forming lower surface 26404 of anvil 26400 when cartridge 26600 is installed within the channel and anvil 26400 is pivoted to the closed position. Although not shown in FIG. 90, surgical staple cartridge 26600 has multiple (usually three) rows of surgical staple pockets on either side of cartridge slot 26608 that opens through cartridge deck surface 26610. good too. Each staple pocket may have a staple driver (not shown) associated therewith that supports surgical staples or fasteners (not shown) thereon. In at least one example, cartridge body 26602 is molded from a polymeric material having staple pockets molded or machined therein. In one configuration, the staple pockets also open through the bottom of the cartridge body 26602 to facilitate attachment of the drivers and fasteners to their respective pockets. The cartridge pan 26620 is attached to the bottom of the cartridge body 26602 once the drivers and fasteners are inserted into their respective staple pockets. In particular, the cartridge pan 26620, when installed, can prevent the drive and fasteners from falling out of the bottom of the cartridge body 26602 during handling and installation of the cartridge 26600 into the elongated channel 26310.

In the illustrated configuration, cartridge 26600 operably supports cam assembly 26650 therein. The cam assembly 26650 includes a central body portion 26652 and a series of spaced apart cam members 26654 configured to move axially within corresponding cam slots 26609 formed on opposite sides of the cartridge slot 26608 within the cartridge body 26602. , provided. The cam slots 26609 are driven through the staple cartridge 26600 as the cam assembly 26650 is driven through the staple cartridge 26600 from a starting position within the proximal end portion 26604 of the cartridge body 26602 to an ending position within the distal end portion of the cartridge body 26602. Aligned with corresponding rows of drives in 26602 to facilitate cam contact with corresponding cam members 26654 . Central body portion 26652 includes a proximally extending unlocking portion 26653 configured to engage threaded latch 26148 on firing member lock 26142 when cartridge 26600 is properly loaded within channel 26310 . include. As shown in FIG. 90, when the cam assembly 26650 is in its most proximal starting position where the unlocking portion 26653 can move the firing member lockout 26142 to the unlocked position, each cam member 26654 may protrude proximally from corresponding cam slots 26609 of the .

87 and 91, in the illustrated configuration, the cartridge verification system 26440 includes a cartridge verification member or shuttle member 26442 attached to the underside of the anvil mounting portion 26410 of the anvil 26400. As shown in FIG. The cartridge verification member 26442 may be of unitary construction and is bifurcated by a firing member slot 26447 (FIG. 91) into a pair of downwardly extending shuttle legs that facilitate passage of the firing member 26120 therebetween. Section 26444 may be included. In other configurations, the cartridge verification member 26442 consists of two separate downwardly extending shuttle legs 26444 separated from each other by a space 26448 configured to pass the firing member 26122 therebetween. It may have a piece structure. In either case, shuttle member 26442 may be fabricated from a compliant polymeric or rubber material and may be attached to the underside of anvil mounting portion 26410 by a suitable adhesive of fastener construction.

In the illustrated example, each shuttle leg 26444 includes a distally projecting sled actuator arm 26446 . Returning to FIG. 90, the cartridge body 26602 was configured for non-locking engagement with the sled actuator arm 26446 on the corresponding shuttle leg 26444 when the cartridge 26600 was operably mounted within the channel 26310. It includes two proximally projecting verification features or cartridge key portions 26630 . As further described below, when the verification mechanism 26630 is not present to contact the corresponding sled actuator arm 26446, the sled actuator arm 26446 contacts the protruding cam member 26654, causing the cam assembly 26650 to remain in contact with the cam assembly. The unlocking portion 26653 on 26650 pushes or biases distally into a position that disengages the threaded latch 26148 on the firing member lock 26142 .

The interaction between cartridge verification system 26440 and cartridge 26600 can be understood with reference to FIGS. 87-92. FIG. 87 shows the initial attachment of a conforming surgical staple cartridge 26600 to surgical end effector 26300. FIG. The anvil 26400 is shown in a fully open position, although the channel has been omitted from the drawing. In the illustrated example, the anvil 26400 is partially closed as shown in FIG. It is movably journalled on the channel for pivoting to an open position or an intermediate position. In that position, each sled actuator arm 26446 is aligned facing a corresponding verification feature 26630 on cartridge body 26602 . Further application of closing motion to the anvil 26400 may translate the anvil 26400 distally to the closed position. Upon distal movement of anvil 26400, verification mechanism 26630 prevents distal movement of corresponding compliant sled actuator arm 26446 such that sled actuator arm 26446 contacts proximally projecting cam member 26654. to prevent Accordingly, cam assembly 26650 remains in its starting position with unlocking portion 26653 on cam assembly 26650 maintaining unlocking engagement with sled latch 26148 on firing member lock 26142 . Accordingly, firing member 26120 is free to move distally through cartridge 26600 upon actuation of the firing drive system.

FIG. 92 shows a cartridge 26600X that may be very similar to cartridge 26600 except that it is “mismatched” with surgical end effector 26300. FIG. For example, cartridge 26600X does not have the verification feature or key portion 26630 of cartridge 26600 . In addition to the cartridge 26600X not having a verification mechanism or key 26630, the number, size, location, etc. of the fasteners contained within the cartridge 26600X also make the cartridge 26600X compatible with the cam assembly 26650 used in the cartridge 26600. Despite the fact that they may have cam assemblies 26650 of the same construction and method of use, they may differ from cartridges 26600 .

93-95 illustrate the insertion of a non-conforming cartridge 26600X into surgical end effector 26300. FIG. FIG. 93 shows the attachment of a non-conforming surgical staple cartridge 26600X to the end effector 26300. FIG. The anvil 26400 is shown in a fully open position, although the channel has been omitted from the drawing. FIG. 94 shows anvil 26400 in an intermediate position when an initial closing motion is applied to anvil 26400 . In that position, each sled actuator arm 26446 is aligned facing a corresponding cam member 26654 projecting proximally from its respective cam slot 26609 . Further application of closing motion to anvil 26400 may translate anvil 26400 distally to its final closed position. As the anvil 26400 moves distally, the sled actuator arm 26446 contacts the proximally projecting cam member 26654, causing the cam assembly 26650 to engage the unlocking portion 26653 thereon over the firing member lock 26142. Move distally to a position where it no longer engages sled latch 26148 . Accordingly, firing member lockout 26142 remains in locking engagement with elongated channel 26310 of end effector 26300 to prevent distal advancement of firing member 26120 upon actuation of the firing drive system.

96-98 illustrate another cartridge verification system 26440' that can be used with an end effector 26300' that employs a firing member 20500 axially advanced by a firing member beam 1900 in various manners described herein. indicate. As described above, firing member 20500 is configured to pass axially through vertically aligned slots in anvil (not shown), staple cartridge 26600', and elongate channel 26310'. A member body 20502 is provided. A lower foot assembly 20506 comprising a pair of laterally extending lower flanges extends from the lower end of the firing member body 20502 to slidably engage corresponding channel ledges formed on opposite sides of the channel slot. . An upper foot comprising two laterally extending anvil tabs 20507 may be formed at the upper end of firing member body 20502 and slidably engage anvil ledges (not shown) formed on opposite sides of the anvil slot. configured to fit. In at least one configuration, firing member 20500 further includes a pair of central tabs (not shown) extending laterally from opposite sides of firing member body 20502 .

Firing member body 20502 is also mounted within elongated channel 26310' and configured to bias firing member 20500 downwardly within elongated channel 26310' to a locked position (not shown). includes a proximally extending spring tail 20512 that can be configured to operatively interface with the . In the locked position, firing member foot 20506 and/or central tab are offset from their corresponding passages in channel 20310', thus preventing firing member 20500 from being distally advanced in a user's attempt to advance the locked-out firing member 20500 distally. Member 20500 does not move distally due to such misalignment. That is, foot 20506 and/or central tab prevent distal advancement of firing member 20500 by contacting portions of elongate channel 20310'. In one configuration, a threaded latch 20514 is formed on firing member body 20502 and is operable in a proximal-most unfired or starting position within a matching cartridge 26600' operably mounted within channel 26310'. It is configured to be engaged by a proximally extending unlocking portion 26653' on supported cam assembly 26650'. When a new unfired staple cartridge 26600' with its cam assembly 26650' in its unfired position is operably mounted within the elongate channel 26310', the unlocking portion 26653' on the cam assembly 26650' engages the firing member body. With the threaded latch 20514 on 20502 engaged and the firing member 20500 aligned with the lower foot assembly 20506 and/or center tabs with their respective passages in the channel 26310', the firing member 20500 is axially threaded therein. Move up to the unlocked position allowing advancement. As the user advances the firing member 20500 distally into the cartridge 26600', the firing member 20500 also drives the cam assembly 20650' therein to cam the drive upward and rest thereon. Bring the staples or fasteners into contact with the underside of the anvil. Tissue cutting member 20504 on firing member 20500 then cuts the stapled tissue. When the firing member 20500 is driven to its distal-most position corresponding to the end position of the cam assembly 26650', the firing member 20500 is retracted to its proximal-most position, moving the cam assembly 26650' out of the cartridge 26600'. Leave at the distal end. As the firing member 20500 returns to its proximal-most starting position, the locking spring again biases the firing member 20500 back to its locked position. Accordingly, if a user attempts to reuse a used cartridge, the cam assembly 26650' will not be in its starting position required to unlock the firing member 20500. Accordingly, this firing member lockout configuration may also be referred to herein as a "spent cartridge lockout configuration."

96 and 97, the cartridge verification system 26440' moves axially within the channel 26310' from a distal-most cartridge engagement position to a proximal verification position within the channel 26310'. A supported, axially movable cartridge verification member or loading shuttle 26442' is provided. A shuttle spring 26449' is mounted within the channel 26310' and serves to bias the cartridge verification member or mounting shuttle 26442' to the most distal cartridge engaging position. 96 and 97, cartridge verification member or shuttle 26442' further includes a pair of distally projecting sled actuator arms 26446'. The sled actuator arm 26446' is positioned to contact a corresponding cam member on the cam assembly of the non-conforming cartridge, as described below.

FIG. 98 shows a proximal end portion 26604' of a surgical staple cartridge 26600' compatible with a surgical end effector 26300'. In at least one configuration, surgical staple cartridge 26600' comprises an elongated cartridge body 26602' sized to be removably mounted within elongated channel 26310'. The cartridge body 26602' includes a cartridge slot 26608' that extends from a proximal end portion 26604' to a distal end portion of the cartridge body 26602'. Cartridge body 26602' further includes a cartridge deck surface 26610' that faces the staple-forming lower surface of the anvil when cartridge 26600' is mounted within channel 26310' and the anvil is pivoted to a closed position. Although not shown in FIG. 98, the surgical staple cartridge 26600' has multiple (usually three) rows of surgical staple pockets on either side of the cartridge slot 26608' that opens through the cartridge deck surface 26610'. may have. Each staple pocket may have a staple driver (not shown) associated therewith that supports surgical staples or fasteners (not shown) thereon. In at least one example, cartridge body 26602' is molded from a polymeric material having staple pockets molded or machined therein. In one configuration, the staple pockets also open through the bottom of the cartridge body 26602' to facilitate attachment of the drivers and fasteners to their respective pockets. Once the drivers and fasteners are inserted into their respective staple pockets, the cartridge pan 26620' is attached to the bottom of the cartridge body 26602'. Cartridge pan 26620' is particularly useful when installed to prevent the drive and fasteners from falling out of the bottom of cartridge body 26602' during handling and installation of cartridge 26600' into elongated channel 26310'. can.

In the illustrated configuration, cartridge 26600' operably supports cam assembly 26650' therein. The cam assembly 26650' includes a series of spacings configured to move axially within a central body portion 26652' and corresponding cam slots 26609' formed on opposite sides of the cartridge slot 26608' in the cartridge body 26602'. and a cam member 26654'. The cam slot 26609' is driven through the staple cartridge 26600' so that the cam assembly 26650' is driven from a starting position within the proximal end portion 26604' of the cartridge body 26602' to an ending position within the distal end portion of the cartridge body 26602'. 26654' to facilitate camming contact with corresponding cam members 26654'. Central body portion 26652' has a proximally extending unlocking portion configured to engage threaded latch 20514 on firing member 20500 when cartridge 26600' is properly loaded within channel 26310'. 26653'.

A conforming cartridge 26600' has a proximally projecting verification feature or key formation configured to engage a sled actuator arm 26446' when the cartridge 26600' is operably mounted within the channel 26310'. 26630' is further included. In the illustrated configuration, cartridge body 26602' further includes two side verification features or cartridge key formations 26632' configured to engage cartridge verification members or shuttles 26442'. As further described below, when a verification structure 26630', 26632' is not in contact with the corresponding sled actuator arm 26446' and cartridge verification member or shuttle 26442', the sled actuator arm 26446' is extended. cam member 26654' on the firing member 20500 and pushes the cam assembly 26650' distally to a position where the unlocking portion 26653' on the cam assembly 26650' is no longer disengaged from the sled latch 20514 on the firing member 20500. or energize.

99-101, in the illustrated configuration, verification features or key formations 26630', 26632' each initially insert cartridge 26600' into channel 26310' at a first position angle FPA. It has an inclined lower alignment surface 26634' thereon that facilitates the sled lower alignment surface 26634' to avoid abutting contact with the sled actuator arm 26446'. Surface 26634' may be referred to herein as a secondary surface. Once the user places the surgical staple cartridge 26600' in the first mounting position, the cartridge 26600' then pivots downward into the channel 26310' and locks the verification features or cartridge key formations 26630', 26632 at position 2. The 'top vertical abutment surface 26636' (secondary surface) abuts corresponding vertical abutment surfaces 26641' and 26647' (primary surface) on the cartridge verification member or shuttle 26442'. The user may then proximally advance cartridge 26600' to position 3 within elongated channel 26310'.

FIG. 102 shows the insertion of a mismatched staple cartridge 26600X″ into a surgical end effector 26300′. It does not have a verification mechanism or cartridge key structure 26630', 26632' that engages the '.Thus, when the cartridge 26600X' is loaded into the channel 26310', the sled actuator arm 26446' will engage the protruding cam member. 26654' to push or bias cam assembly 26650' distally to a position where unlocking portion 26653' on cam assembly 26650' is not disengaged from sled latch 20514 on firing member 20500. Accordingly, firing member 20500 remains locked in place and the user is prevented from distally advancing firing member 20500 into an incompatible cartridge 26600X'.

103 and 104 show the insertion of a mismatched cartridge 26600X' into the end effector 26300', wherein the mismatched cartridge 26600X' is first deeply inserted proximally into the channel 26310' and the firing member 20500 contacting the cam assembly 26650' or "sled" and pushing it distally deeper into the cartridge 26600X', thereby finally positioning the cartridge 26600X' into position within the channel 26310'. Once installed, it is prevented from moving distally within cartridge 26600X′ into proper position for non-locking engagement with the threaded latch 20514 portion of firing member 20500 . Similarly, when a non-conforming cartridge 26600X' is first inserted into angled position 1 and then moved to positions 2 and 3 as described above, the firing member 20500 will properly seat the cam assembly 26650'. The cam assembly 26650' or the sled may be pushed distally beyond the firing member unlocked position so that the firing member 20500 cannot be unlocked even if it is pushed. See FIGS. 105 and 106. FIG.

FIGS. 107-109 illustrate another cartridge verification system 26440'' usable with an end effector 26300'' using a firing member 20500 axially advanced by a firing member beam 1900 in various manners described herein. indicates As described above, the firing member 20500 has a firing member body configured to pass axially through vertically aligned slots in an anvil (not shown), a staple cartridge, and an elongated channel 26310''. 20502. A lower foot assembly (not shown) comprising a pair of laterally extending lower flanges extends from the lower end of firing member body 20502 with corresponding channel ledges formed on either side of the channel slot. An upper foot 20507 comprising two laterally extending anvil tabs 20509 may be formed on the upper end of the firing member body 20502 and anvil ledges formed on opposite sides of the anvil slot. (not shown) In at least one configuration, the firing member 20500 further includes a pair of central tabs 20510 extending laterally from opposite sides of the firing member body 20502. include.

Firing member body 20502 is also mounted within elongated channel 26310″ and configured to bias firing member 20500 downwardly within elongated channel 26310′ to a locked position (not shown). In the locked position, the firing member foot and/or central tab 20510 is configured to include a proximally extending spring tail (not shown) that can be configured to operatively interface with the channel. 20310″ and thus, when the user attempts to distally advance the firing member 20500 in a locked out state, the firing member 20500 will not move distally due to such misalignment. . That is, the foot and/or central tab 20510 contacts a portion of the elongate channel 26310″, thereby preventing distal advancement of the firing member 20500. In one configuration, a threaded latch 20514 is formed on the firing member body 20502. and engaged by a proximally extending unlocking portion on a cam assembly operably supported at a proximal-most starting position in a compatible cartridge operably mounted within channel 26310". is configured as

When a new, unfired, conforming staple cartridge with its cam assembly in its (unfired) starting position is operably installed within elongated channel 26310″, the unlocking portion of the cam assembly is threaded onto firing member body 20502. Latch 20514 engages firing member 20500 with lower foot assembly and/or central tab 20510 aligned with respective passages of channel 26310" to allow firing member 20500 to advance axially therein. upward to the unlocked position. As the user advances the firing member 20500 distally into the cartridge, the firing member 20500 also drives a cam assembly therein to cam the drive upward to force the staples or fasteners supported thereon. Make contact with the underside of the anvil. Tissue cutting member 20504 on firing member 20500 then cuts the stapled tissue. When the firing member 20500 is driven to its distal-most position, which corresponds to the end position of the cam assembly, the firing member 20500 is retracted to its proximal-most position, causing the cam assembly to engage the distal end (fired) of the cartridge. position). As the firing member 20500 returns to its proximal-most starting position, the locking spring again biases the firing member 20500 back to its locked position. Thus, if a user attempts to reuse a used cartridge, the cam assembly will not be in its starting position required to unlock the firing member 20500 . Such firing member locking systems may also be referred to herein as "spent cartridge lockout systems."

In the configuration shown in FIGS. 107 and 109, the cartridge verification system 26440'' moves axially within the channel 26310'' from a distal-most cartridge engagement position to a proximal verification position within the channel 26310''. A supported, axially movable cartridge verification shuttle 26442'' is provided. A shuttle spring 26449" is mounted within the channel 26310" and serves to bias the cartridge verification shuttle 26442" to the most distal cartridge engaging position. As shown in FIGS. Shuttle 26442" further includes a distally extending shuttle base member 26644" and a pair of laterally movable shuttle drive arms 26450". Each shuttle drive arm 26450" has a drive latch mechanism 26452" thereon having an angled proximal drive surface 26454" and an angled distal drive surface 26456" converging together to form a point 26548". The drive arm 26450" is biased laterally inward into the drive position by the shuttle spring 26449". When the shuttle drive arm 26450" is in the drive position, the slanted proximal drive surface 26454" 108, it is in driving engagement with a central tab 20510 on the firing member 20500. When the shuttle drive arm 26450'' is in that position, distal advancement of the firing member 20500 causes the mounting shuttle 26442'' to move. Move distally with it.

FIG. 109 shows a proximal end portion 26604'' of a surgical staple cartridge 26600'' mounted within a channel 26310'' mated with a surgical end effector 26300''. In at least one configuration, the surgical staple cartridge 26600" includes an elongated cartridge body 26602" sized to be removably mounted within the elongated channel 26310". The cartridge body 26602" extends from the proximal end of the cartridge body 26602". It includes a cartridge slot 26608'' extending from portion 26604'' to a distal end portion. Cartridge 26600'' operably supports cam assembly 26650'' therein. Cam assembly 26650'' includes a central body portion 26652'', a series of spaced apart cam members 26654" configured to move axially within corresponding cam slots 26609" formed on opposite sides of the cartridge slot 26608" in the cartridge body 26602". '', as the cam assembly 26650'' is driven through the staple cartridge 26600'' from a starting position within the cartridge body 26602''' proximal end portion 26604'' to an ending position within the distal end portion of the cartridge body 26602''. Additionally, they are aligned with corresponding rows of drives in cartridge body 26602'' to facilitate camming contact with corresponding cam members 26654''. Central body portion 26652" has a proximally extending unlocking portion configured to engage threaded latch 20514 on firing member 20500 when cartridge 26600" is properly loaded within channel 26310". 26653".

The compatible cartridge 26600" includes a proximally projecting unlocking mechanism or cartridge key configured to engage the shuttle drive arm 26450" when the cartridge 26600" is operably mounted within the channel 26310". As shown in FIG. 109, during distal advancement of the firing member 20500, the verification shuttle 26442" causes each shuttle drive arm 26450" to contact a corresponding cartridge key formation 26630", This drives the shuttle drive arm 26450" distally until it is biased laterally outward. As the firing member 20500 continues to move distally, the drive latch mechanism 26452" on the shuttle drive arm 26450" , is disengaged from a corresponding central tab 20510 on the firing member body 20502, allowing the firing member 20500 to move distally without driving the verification shuttle 26442'' distally. Accordingly, in such a case, the verification shuttle 26442 ″ has not moved distally enough to move the cam assembly 26650 ″ out of unlocking engagement with the sled latch 20514 on the firing member 20500 . Accordingly, the firing member 20500 can be distally driven through a conforming cartridge 26600" to drive the fasteners therefrom to cut tissue clamped within the end effector 26300". As the firing member 20500 is withdrawn to its starting position, the tapered surface 20511 on each central tab 20510 contacts the angled distal drive surface 26456" on the corresponding drive latch mechanism 26452" to engage the shuttle arm 26450". is laterally biased to reengage the central tab 20510 with the angled proximal drive surface 26454 ″ to allow the verification shuttle 26442 ″ to be again distally driven by the firing member 20500 .

Figures 107 and 108 illustrate loading of a non-conforming cartridge 26600X" into a surgical end effector 26300". As shown in these figures, the non-conforming cartridge 26600X'' does not have the proximally projecting unlocking mechanism or cartridge key formation 26630'' provided on the conforming cartridge 26600''. As the firing member 20500 is advanced distally, the cartridge verification shuttle 26442 ″ also moves distally with the firing member 20500 . As the cartridge verification shuttle 26442 ″ moves distally, the distal end 26645 ″ of the distally extending shuttle base member 26644 ″ contacts the cam assembly 26650 ″ causing the cam assembly 26650 ″ to thread onto the firing member 20500 . Out of unlocking engagement with latch 20514. When unlocking portion 26653" of cam assembly 26650" disengages threaded latch 20514, firing member body 20502 falls into locking engagement with elongated channel 26310". , preventing further distal advancement of firing member 20500 .

As further shown in Figures 108 and 109, in the illustrated configuration, lateral stiffener members 26470" project laterally outwardly from each shuttle arm 26450". When the firing member 20500 and verification shuttle 26442'' are positioned in their respective proximal-most starting positions, each lateral stiffener member 26470'' engages with a corresponding channel notch 26472'' provided in each channel sidewall 26314''. Laterally aligned to provide space for the shuttle arm 26450" to move laterally when a compatible cartridge 26600" is properly loaded into the end effector 26300". However, the non-compatible cartridge 26600X" is loaded into the end effector 26300″ and the user begins distally advancing the firing member 20500 and the verification shuttle 26442″, the lateral stiffener member 26470″ is positioned within the channel sidewall 26314″ as shown in FIG. In such a case, the lateral stiffener members 26470" extend laterally from opposite sides of the firing member body 20502 with the shuttle arms 26450" biased laterally outward. disengagement with the central tab 20510.

The cartridge validation system described herein can address various problems that can sometimes arise when using an end effector that initially accepts a variety of cartridges, including cartridges that are not specifically compatible with the end effector. . For example, a cartridge may operably fit into the channel of the end effector, but not have the proper fastener configuration to fit the formed pocket on the anvil of the end effector. A non-conforming cartridge may not have the proper number or shape of staples. A cartridge may not have a cam assembly compatible with the firing member lockout configuration used by the end effector. Some cartridges have a suitable cam assembly, but at some point the cam assembly may have moved to a limit unlocked position that may or may not be in unlocking engagement with the firing member lockout arrangement. be. At least part of the cartridge verification system may address this issue. The cartridge verification system disclosed herein may also provide the ability to distinguish between obsolete cartridges and newer suitable cartridges that have features that mate better with end effector components, for example. The cartridge verification system also ensures that the cartridge is properly seated within the end effector channel such that the proximal end of the cartridge is positioned against the firing member with the center tab on the firing member at the top of the cartridge pan as desired. Misalignment of the cartridge within the channel may be minimized such that it is placed in an undesired position where it could otherwise slip under the cartridge pan. Such misalignment can cause damage or bending of the cartridge pan, resulting in premature locking of the firing member.

110-115 illustrate another cartridge verification system usable with an end effector 27300 that employs a firing member 20500 (described above) that is axially advanced by a firing member beam 1900 in various manners described herein. 27440 is shown. In the illustrated configuration, cartridge verification system 27440 is supported within channel 27310 of end effector 27300 for axial movement from a distal-most cartridge engagement position within channel 27310 to a proximal verification position. directionally movable cartridge verification member or shuttle 27442; Cartridge verification member or shuttle 27442 may be fabricated from spring steel and may include elongated body 27444 including blocking hook 27446 formed on distal end 27445 of elongated body 27444 . See FIG. Cartridge verification member or shuttle 27442 further includes an actuator portion 27448 formed on proximal end 27447 of elongated body 27444 .

With continued reference to FIG. 111, cartridge verification member or shuttle 27442 is configured to move axially within shuttle track 27360 formed within channel bottom 27312 of channel 27310 . As shown in FIG. 111, the shuttle track 27360 has a curved transverse portion 27362 that extends transversely to a channel slot 27313 that is centrally disposed within the channel bottom 27312 and allows the firing member 20500 to pass axially therethrough. including. A curved transverse portion 27362 of shuttle track 27360 terminates in an angled track portion 27364 located on the other side of channel slot 27313 . As shown in FIG. 111, sloped track portion 27364 has sloped bottom surface 27366 . A proximal end 27370 of the shuttle track 27360 has an axial spring cavity configured to support a shuttle spring 27382 pivoted on a spring retainer pin 27449 projecting proximally from the actuator portion 27448 of the cartridge verification member or shuttle 27442. 27380 abuts. Shuttle spring 27382 serves to bias verification shuttle 27442 to a distal most locked position where cartridge verification member or shuttle 27442 blocks distal advancement of cam assembly 27650 and firing member 20500 .

FIG. 110 shows a proximal end portion 27604 of a surgical staple cartridge 27600 mated with a surgical end effector 27300. FIG. In at least one configuration, surgical staple cartridge 27600 comprises an elongated cartridge body 27602 sized to be removably mounted within elongated channel 27310 . The cartridge body 27602 includes a cartridge slot 27608 that extends from a proximal end portion 27604 of the cartridge body 27602 to a distal end portion. Cartridge body 27602 further includes a cartridge deck surface 27610 that faces the staple-forming lower surface of the anvil when cartridge 27600 is installed within channel 27310 and the anvil is pivoted to the closed position. Although not shown in FIG. 110, the surgical staple cartridge 27600 has multiple (usually three) rows of surgical staple pockets on either side of the cartridge slot 27608 opening through the cartridge deck surface 27610. good too. Each staple pocket may have a staple driver (not shown) associated therewith that supports surgical staples or fasteners (not shown) thereon. In at least one example, cartridge body 27602 is molded from a polymeric material having staple pockets molded or machined therein. In one configuration, the staple pockets also open through the bottom of the cartridge body 27602 to facilitate attachment of the drivers and fasteners to their respective pockets. The cartridge pan 27620 is attached to the bottom of the cartridge body 27602 once the drivers and fasteners are inserted into their respective staple pockets. In particular, the cartridge pan 27620, when installed, can prevent the drive and fasteners from falling out of the bottom of the cartridge body 27602 during handling and installation of the cartridge 27600 into the elongated channel 27310.

In the illustrated configuration, cartridge 27600 operably supports cam assembly 27650 therein. The cam assembly 27650 includes a central body portion 27652 and a series of spaced apart cam members 27654 configured to move axially within corresponding cam slots 27609 formed on opposite sides of the cartridge slot 27608 within the cartridge body 27602. , provided. The cam slots 27609 are driven through the staple cartridge 27600 as the cam assembly 27650 is driven through the staple cartridge 27600 from a starting position within the proximal end portion 27604 of the cartridge body 27602 to an ending position within the distal end portion of the cartridge body 27602. Aligned with corresponding rows of drives in 27602 to facilitate cam contact with corresponding cam members 27654 . Central body portion 27652 includes a proximally extending unlocking portion 27653 configured to engage threaded latch 20514 on firing member 20500 when cartridge 27600 is properly loaded within channel 27310. .

The compatible cartridge 27600 further includes a proximally projecting verification feature or cartridge key formation 27630 configured to engage the sled actuator 27448 when the cartridge 27600 is operably mounted within the channel 27310. . Verification mechanism 27630 biases cartridge verification member or shuttle 27442 to the most proximal unlocked position where cam assembly 27650 and firing member 20500 can be displaced distally through cartridge 27600 . When cartridge verification member or shuttle 27442 is in the unlocked position, blocking hook 27446 formed on distal end 27445 of elongate body 27444 of cartridge verification member or shuttle 27442 is positioned within curved transverse portion 27362 of shuttle track 27360. and does not extend across channel slot 27313 in channel bottom 27312 . If blocking hook 27446 does not extend across channel slot 27313, firing member 20500 and cam assembly 27650 can advance into cartridge 27310''.

FIGS. 114 and 115 show a surgical end effector 27300 with a mismatched cartridge 27600X installed therein. In this example, nonconforming cartridge 27600X does not have a verification mechanism or cartridge key structure 27630 provided on conforming cartridge 27600 to engage actuator portion 27448 of cartridge verification member or shuttle 27442 . Thus, the shuttle spring 27382 causes the cartridge verification member or shuttle 27442 to traverse the channel slot 27313 and the angled track portion 27364 as the blocking hook 27446 formed in the distal end 27445 of the elongated body 27444 of the cartridge verification member or shuttle 27442 traverses the channel slot 27313 . biasing distally to a locking position extending transversely inward. As blocking hook 27446 enters sloped track portion 27364 , sloped bottom surface 27366 moves blocking hook 27446 upward to a position where blocking hook 27446 blocks distal advancement of cam assembly 27650 and firing member 20500 . Thus, in that position, blocking hook 27446 blocks distal advancement of cam assembly 27650 and firing member 20500 should a user accidentally attempt to advance firing member 20500 distally.

In at least one configuration shown in FIG. 115, the portion of blocking hook 27446 that traverses channel slot 27313 may be reinforced with an additional reinforcing blocking portion 27450 attached thereto. That is, the cross-sectional thickness of the reinforced blocking hook 27446 portion is greater than the cross-sectional thickness of the remaining body portion of the cartridge verification member or shuttle 26442 . Alternative configurations are contemplated for use with the end effectors disclosed herein using an axially movable closure member, such as an end effector closure tube, for moving the anvil to a closed position. be. In such end effector configurations, for example, the end effector closure tube may be configured to bias the verification shuttle into a locked blocking position when the closure member is actuated to close the anvil. Cartridge verification system 27440 can also be effectively used with surgical end effectors that include a rotating firing member configuration with a firing member lockout system of the type disclosed herein.

FIGS. 116-119 illustrate another surgical staple cartridge 28600 usable in connection with various end effector configurations disclosed herein. In the illustrated configuration, surgical staple cartridge 28600 comprises an elongated cartridge body 28602 sized to be removably mounted within an elongated channel of an end effector. As shown in FIG. 117, the cartridge body 28602 includes a cartridge slot 28608 that extends from a proximal end portion 28604 of the cartridge body 28602 to a distal end portion of the cartridge body 28602. As shown in FIG. Cartridge body 28602 further includes a cartridge deck surface 28610 that faces the staple-forming lower surface of the anvil when cartridge 28600 is installed in the channel and the anvil is pivoted to the closed position. Although not shown in FIG. 117, the surgical staple cartridge 28600 has multiple (typically three) rows of surgical staple pockets on either side of the cartridge slot 28608 opening through the cartridge deck surface 28610. good too. Each staple pocket may have a staple driver (not shown) associated therewith that supports surgical staples or fasteners (not shown) thereon. In at least one example, cartridge body 28602 is molded from a polymeric material having staple pockets molded or machined therein. In one configuration, the staple pockets also open through the bottom of the cartridge body 28602 to facilitate attachment of the drivers and fasteners to their respective pockets. The cartridge pan 28620 is attached to the bottom of the cartridge body 28602 once the drivers and fasteners have been inserted into their respective staple pockets. In particular, the cartridge pan 28620, when installed, can prevent the drive and fasteners from falling out of the bottom of the cartridge body 28602 during handling and installation of the cartridge 28600 into the elongate channel.

In the illustrated configuration, cartridge 28600 operably supports cam assembly 28650 therein. The cam assembly 28650 includes a central body portion 28652 and a series of spaced apart cam members 28654 configured to move axially within corresponding cam slots 28609 formed on opposite sides of the cartridge slot 28608 in the cartridge body 28602; 28654' and The cam slots 28609 are driven through the staple cartridge 28600 as the cam assembly 28650 is driven through the staple cartridge 28600 from a starting position within the proximal end portion 28604 of the cartridge body 28602 to an ending position within the distal end portion of the cartridge body 28602. Aligned with corresponding rows of drives in 28602 to facilitate cam contact with corresponding cam members 28654, 28654'.

Still referring to FIG. 117, the cartridge 28600 includes a cam assembly locking system 28440 configured to hold the cam assembly 28650 in its starting position when the cartridge 28600 is not loaded into a compatible end effector. . In the illustrated configuration, for example, cam assembly locking system 28440 comprises a laterally displaceable locking mechanism 28442 comprising actuator portion 28444 and locking tab 28446 . As shown in FIG. 117, locking tabs 28446 are configured to be received within locking cavities 28655 provided within corresponding cam members 28654' when cam assembly 28650 is in the locked position. See FIGS. 116 and 117. FIG. Actuator portion 28444 is configured to contact an actuator lug or other portion of the end effector anvil when the anvil is moved to the closed position. For example, an actuator lug 28411 may be formed on an anvil attachment portion of any of the various anvils disclosed herein such that when the anvil is moved to the closed position, the actuator portion 28444 is laterally moved to the unlocked position. It may be configured to be biased. When the actuator portion 28444 is in the unlocked position and the firing drive system is actuated as described herein, the locking tabs 28446 move laterally out of the locking cavities 28655 in the cam members 28654' and then A cam assembly 28650 may be advanced distally through cartridge 28600 . See FIGS. 118 and 119. FIG.

In various instances, surgical stapling instruments include cartridge jaws configured to receive replaceable staple cartridges. The stapling instrument further comprises a staple firing system configured to eject or fire the staples from the staple cartridge and an anvil including a shaped surface or pocket configured to deform the staples. The staple firing system includes a tissue cutting knife that moves from the proximal end toward the distal end of the staple cartridge during the staple firing stroke. The tissue cutting knife drives the staples toward and against the anvil by abutting and pushing the threads in the staple cartridge during the staple firing stroke. As the staples are deformed against the anvil, the staples are embedded in the tissue in longitudinal rows and the tissue cutting knife cuts the tissue between the two longitudinal staple rows. After the staple firing stroke is completed and/or after a staple firing stroke of sufficient length is completed, the tissue cutting knife is retracted proximally. However, the cartridge sled is not retracted proximally with the tissue cutting knife. Instead, the cartridge sled is left in the most distal position pushed out by the tissue cutting knife. After the staple cartridge has been fired, or at least partially fired, it is removed from the cartridge jaws and then replaced with another replaceable staple cartridge as needed. At such point, the stapling instrument can be used again to continue stapling and dissecting the patient's tissue. However, in some cases, a fired staple cartridge may be accidentally loaded into the cartridge jaws. When the tissue cutting knife is advanced distally within such a fired staple cartridge, the stapling instrument cuts patient tissue without stapling. When the tissue cutting knife is advanced distally through the staple firing stroke without a staple cartridge positioned within the cartridge jaws, the stapling instrument similarly cuts patient tissue without stapling. . For this reason, stapling instruments are provided with one or more lockouts that prevent such occurrences as described in more detail below.

U.S. Patent Application Publication No. 2004/0232200, filed May 20, 2003, entitled "SURGICAL STAPLING INSTRUMENT HAVING A SPENT CARTRIDGE LOCKOUT," U.S. Patent Application Publication No. 2004/0232199, entitled "SURGICAL STAPLING" INSTRUMENT HAVING A FIRING LOCKOUT FOR AN UNCLOSED ANVIL", U.S. Patent Application Publication No. 2004/0232197, filed May 20, 2003, entitled "SURGICAL STAPLING INSTRUMENT INCORPORATION A E-BEAM FIRING MECHANISM", 2 Filed May 20, 003 U.S. Patent Application Publication No. 2004/0232196, entitled "SURGICAL STAPLING INSTRUMENT HAVING SEPARATE DISTINCT CLOSING AND FIRRING SYSTEMS," U.S. Patent Application Publication No. 2004/0232195, filed May 20, 3003, entitled "SUR GICAL STAPLING INSTRUMENT HAVING A SINGLE LOCKOUT MECHANISM FOR PREVENTION OF FIRING” and U.S. Patent Application Publication No. 2018/0085123, filed Aug. 17, 2017, entitled “ARTICULATING SURGICAL STAPLING IN”. STRUMENT INCORPORATION A TWO-PIECE E-BEAM FIRING MECHANISM" is incorporated by reference in its entirety.

Referring to FIG. 120, a surgical stapling instrument 30000 comprises a cartridge jaw or channel 30010 and a staple cartridge 30020 mounted within the cartridge jaw 30010 . The staple cartridge 30020 includes a cartridge body 30022, a plurality of staple cavities defined within the cartridge body 30022, and staples removably stored within the staple cavities. Staple cartridge 30020 further comprises a sled 30030 and a staple driver driven by sled 30030 to eject staples from the staple cavities as sled 30030 advances distally during the staple firing stroke. Stapling instrument 30000 further comprises a firing member 30040 configured to engage sled 30030 and force sled 30030 distally, as described in more detail below.

Further to the above, firing member 30040 includes a cutting portion 30042 that includes tissue knife 30044 . Cutting portion 30042 was defined on sled 30030 when sled 30030 was in its unfired position within staple cartridge 30020 and firing member 30040 moved distally from its unfired position shown in FIG. Further includes a distal nose 30043 configured to be disposed on shoulder 30033 . Once the distal nose 30043 is positioned on the sled shoulder 30033, the firing member 30040 can be advanced distally to perform a staple firing stroke. Note that the cutting portion 30042 includes a first cam member 30046 configured to engage a cam surface of the channel 30010 that cooperates to jointly position the anvil and staple cartridge 30020 relative to one another; a second cam member 30048 configured to engage a cam surface on the anvil of stapling instrument 30000; However, embodiments having only one or both of cam member 30046 and cam member 30048 are also envisioned.

121, firing member 30040 is spring biased toward channel 30010 so that sled 30030 is pulled into its unfired position when firing member 30040 is advanced distally to initiate the staple firing stroke. If not, the distal nose 30043 of the cutting portion 30042 will miss or fail to land on the shoulder 30033 and instead the cutting portion 30042 will be directed downward into the channel 30010 . Cutting portion 30042 includes a lockout pin 30045 extending laterally therefrom that is defined within channel 30010 when distal nose 30043 does not rest on shoulder 30033 of sled 30030 . 30012. In such a case, firing member 30040 is allowed to move distally within lockout window 30012 . However, the distal end of lockout window 30012 includes a lockout shoulder 30015 that contacts lockout pin 30045 to stop distal advancement of firing member 30040 . In such a case, as a result, firing member 30040 is locked out and prevented from executing its staple firing stroke. However, if the sled 30030 is in its unfired position, the interaction between the distal nose 30043 of the cutting portion 30042 and the shoulder 30033 of the sled 30030 may allow the firing member 30040 to enter the lockout window 30012. prevented and a staple firing stroke will be performed.

In addition to the above, when the firing member 30040 is advanced distally without a staple cartridge positioned within the cartridge channel 30010 and/or without a staple cartridge properly loaded, the firing member 30040 locks out. It will enter the window 30012 . In view of the above, the surgical instrument 30000 may be used in the staple firing stroke if there is no staple cartridge within the surgical instrument 30000, if it is improperly installed, and/or if it is at least partially used. Equipped with a lockout to prevent However, even when the staple cartridge is not fired, i.e., all of its staples remain positioned within their staple cavities, the distal nose 30043 of the cutting portion 30042 may, for example, be subject to various manufacturing tolerances. Because of this, the shoulder 30033 of the sled 30030 may be missed. In such cases, the firing member 30040 is locked out unnecessarily, requiring the clinician to replace the staple cartridge with another staple cartridge. Such may not occur frequently, but when it does, it is inconvenient for the clinician.

Surgical instrument 30100 is shown in FIG. 122 and includes improvements that can reduce the likelihood that distal nose 30043 of cutting portion 30042 will miss shoulder 30033 of sled 30030 . Surgical instrument 30100 is similar in many respects to surgical instrument 30000 except that it includes staple cartridge 30120 instead of staple cartridge 30020 . The staple cartridge 30120 includes a cartridge body 30122, a plurality of staple cavities defined within the cartridge body 30122, and staples removably stored within the staple cavities. Referring to FIG. 123, staple cartridge 30120 further comprises a sled 30030 which, similar to that described above, can be used during the staple firing stroke when distal nose 30043 of cutting portion 30042 catches shoulder 30033 of sled 30030. distally from the unfired position. Otherwise, as the firing member 30040 is advanced distally, the cutting portion 30042 is forced into a lockout window 30012 defined within the cartridge channel 30010, as shown in FIG.

125 and 126, the cartridge body 30122 includes a proximal ramp 30126 configured to lift the firing member 30040 upward as the firing member 30040 is advanced distally. More specifically, a lockout pin 30045 extending laterally from the firing member 30040 has a proximal ramp that guides the cutting portion 30042 away from the lockout window 30012 as the firing member 30040 is advanced distally. It contacts an inclined surface 30127 defined on portion 30126 . Lockout pin 30045 does this, in addition to the above, against the bias of the spring pushing firing member 30040 toward cartridge channel 30010 . By lifting the firing member 30040 in this manner, the nose 30043 of the firing member 30040 will land on the shoulder 30033 of the sled 30030 even if the sled 30030 is accidentally pushed slightly distally from its unfired position. more likely. Accordingly, the likelihood of unintentionally locking out an unfired staple cartridge is reduced. However, when the staple cartridge 30120 is at least partially fired, the nose 30043 misses the shoulder 30033 and the lockout pin 30045 is pushed through the window 30125 formed between the proximal ramp 30126 and the lockout window 30012. fall through. Thus, surgical instrument 30100 is locked out when an at least partially used staple cartridge 30120 is loaded within cartridge channel 30010, as described above. Further, as described above, when a staple cartridge is not in cartridge channel 30010, surgical instrument 30100 is locked out, and the absence of proximal ramp 30126 causes firing member 30040 to immediately enter lockout window 30012 and staples. A firing stroke is initiated.

Note that in addition to the above, ramp 30126 is located proximal to shoulder 30033 of sled 30030 . Thus, the firing member 30040 is locked out by the missing/bad cartridge lockout provided by the ramp 30126 and the sled 30030 as the firing member 30040 moves distally to perform the staple firing stroke. must pass through the used cartridge lockout continuously. Additionally, ramp 30126 lifts firing member 30040 to the proper height supported by sled 30030 . Ultimately, the ramp 30126 of the cartridge body 30122 and the shoulder 30033 of the sled 30030 cooperate to defeat the lockout of the stapling instrument 30100.

A staple cartridge 30220 according to at least one alternative embodiment is shown in FIG. Similarly, staple cartridge 30220 includes a cartridge body 30222 that is similar in many respects to cartridge body 30122 . However, the cartridge body 30222 includes a proximal ramp 30226 that extends further proximally than the proximal ramp 30126 . Accordingly, the firing member 30040 is lifted earlier in its staple firing stroke when the staple cartridge 30220 is used. In various examples, staple cartridge 30220 can include a drop window 30225 that is larger than drop window 30125 . Additionally, proximal ramp 30226 includes ramp 30227 that is shorter than ramp 30127 . In such an example, when staple cartridge 30220 is used, firing member 30040 is not lifted as high as when staple cartridge 30120 is used. In any event, such parameters can be used to perfect the proper lifting action of the firing member 30040.

As described above, the lockout pin 30045 of the firing member 30040 is configured such that the firing member 30040 can land on the shoulder 30033 of the sled 30030 when the sled 30030 is properly positioned within the staple cartridge 30220. , to contact the ramp 30226 that lifts the firing member 30040 . However, alternate embodiments are envisioned in which the ramp may lift any suitable portion of the staple firing member onto the shoulder 30033 of the sled 30030. For example, the firing member 30040 may include a lamellar bar attached to the cutting portion 30042 that contacts the ramp 30226 and lifts the firing member 30040 upward once the staple firing stroke is initiated.

Referring again to FIG. 127, staple cartridge 30220 includes a pan 30024 that extends at least partially below cartridge body 30222 . The pan 30024 is configured to prevent staple drivers and/or staples within the cartridge body 30222 from falling out of the bottom of the cartridge body 30222 . Pan 30024 includes latches 30021 that engage slots defined in cartridge body 30222 . Further defined in the pan 30024 is a window 30029 that cooperates with a projection extending from the cartridge body 30222 to align the pan 30024 with the cartridge body 30222 . Additionally or alternatively, a lift ramp 30226 may extend from the pan 30024, for example.

A surgical stapling instrument 30300 is shown in FIG. Stapling instrument 30300 is similar in many respects to stapling instrument 30200 . However, stapling instrument 30300 includes staple cartridge 30320 instead of staple cartridge 30220 . The staple cartridge 30320 includes a cartridge body 30322, a plurality of staple cavities defined within the cartridge body 30322, and staples removably stored within the staple cavities. Within the cartridge body 30322 is a longitudinal slot 30023 configured to receive a firing member 30040 and further extending in front of the longitudinal slot 30023 so that the sled 30030 extends in its unfired position as shown in FIG. and a proximal ramp 30327 that lifts the firing member 30040 onto the sled 30030 when in, or at least approximately in, that position. As the sled 30030 advances at least partially through its staple firing stroke, the shoulder 30033 does not capture the nose 30043 of the firing member 30040 and the cutting portion 30042 locks through the window defined between the ramp supports 30326. It falls into the out window 30012 .

130 and 132, ramp 30327 also includes a gate configured to pivot out of the way of firing member 30040 when sufficient bias is applied to firing member 30040. Referring to FIGS. The ramp 30327 has a first end rotatably attached to one of the ramp supports 30326 and a second end releasably attached to the other ramp support 30326 . 131 and 133, the second end of the ramp 30327 is such that the nose 30043 of the firing member 30040 is inclined when the sled 30030 is in, or at least approximately, its unfired position. It is configured to release from its ramp support 30326 after the firing member 30040 has been lifted upward so that it falls onto the shoulder 30033 of the sled 30030 when off the ramp 30327 . At such point, the ramp 30327 no longer impedes distal movement of the firing member 30040 and the firing member 30040 can advance distally across the longitudinal slot 30023 . Ramp 30327 remains laterally displaced throughout the staple firing stroke and after firing member 30040 is retracted to its unfired position. Thus, the displaced ramp 30327 cannot lift the firing member 30040 when the firing member 30040 is advanced distally again. In such an example, when the firing member 30040 is advanced distally before the used staple cartridge 30320 is replaced, the lockout pin 30045 of the cutting portion 30042 is pushed into the lockout window 30012 by a spring acting against the firing member 30040 . pushed inside. Ramp 30327 thus functions as a spent cartridge lockout. In at least one alternative embodiment, ramp 30327 is configured to move away from cartridge body 30322 to release firing member 30040 .

Further, in addition to the above, the lockout configuration of stapling instrument 30300 also functions as an improper/nonconforming cartridge lockout. If an improper or mismatched staple cartridge that does not have ramps 30327 or another suitably configured ramp is attempted to be loaded into cartridge channel 30010, firing member 30040 will be forced onto the threads of the improper staple cartridge. Instead, lockout pin 30045 is pushed into lockout window 30012, thereby locking out the staple firing system. In such instances, the firing member 30040 can be retracted to its unfired position and the incorrect/incompatible staple cartridge can be replaced with a suitable/matching staple cartridge. Inadvertently replacing the proper staple cartridge with the wrong staple cartridge can occur, such as in an operating room where a particular staple cartridge is intended to be used with a particular stapling instrument.

As noted above, ramp 30327 extends rearwardly of sled 30030 . As a result, ramp 30327 can prevent sled 30030 from being accidentally pushed distally. In various examples, the staple cartridge 30320 is inserted into the stapling instrument 30300 by first inserting the proximal end of the staple cartridge 30320 into the cartridge channel 30010 and then loading the staple cartridge 30320 into the cartridge channel 30010. loaded. Thus, the sled 30030 can contact, for example, the cartridge channel 30010 and be pushed distally within the staple cartridge 30320 from its proximal unfired position. In such examples, the sled 30030 may not be positioned to override the staple firing lockout of the stapling instrument 30300 when the staple firing stroke is initiated; Treat this staple cartridge 30320 as used and if the stapling instrument 30300 is to be used, it must be replaced. Ramped portion 30327 extends proximally behind sled 30030 and thus can prevent this, allowing sled 30030 to extend distally within staple cartridge 30320 when staple cartridge 30320 is installed. can be prevented from being pushed out.

As described above, the sled 30030, when properly positioned within the staple cartridge, overrides the staple firing lockout of the stapling instrument so that the staple firing stroke can be completed. In use, firing member 30040 is at least partially distally advanced to assess whether sled 30030 is properly positioned and whether staple firing lockout is overridden. be done. More specifically, firing member 30040 advances distally until firing member 30040 is supported by sled 30030 to perform a staple firing stroke when sled 30030 is properly positioned within staple cartridge 30320. Alternatively, if the sled 30030 is not properly positioned within the staple cartridge 30320 or if the staple cartridge 30320 is not present within the cartridge channel 30010, it contacts the lockout shoulder 30015 . The firing member 30040 is retracted to insert an unused staple cartridge 30320 into the cartridge channel 30010 and/or to initiate another staple firing stroke when the firing member 30040 contacts the lockout shoulder 30015. may need. With this in mind, the surgical instrument 30400 of FIGS. 134 and 135 is designed such that the firing member reaches the lockout shoulder 30015 when no staple cartridge is present within the cartridge channel, as described in more detail below. It is configured to limit the travel of the firing member so that the firing member can be stopped before the firing member is released.

In addition to the above, firing member 30440 of surgical instrument 30400 is similar in many respects to firing member 30040, but includes cutting member 30442 including secondary lockout pin 30449 extending laterally therefrom. But different. When staple cartridge 30320 is not positioned within cartridge channel 30410 of stapling instrument 30400, cutting member 30442 advances into lockout window 30012 immediately upon distal advancement of firing member 30440, and secondary lockout pin 30010 is activated. 30449 quickly contacts secondary lockout shoulder 30419 in lockout window 30012 . Accordingly, when staple cartridge 30320 is not within cartridge channel 30410 , firing member 30440 need not move distally to contact lockout shoulder 30015 . In such instances, the distance the firing member 30440 needs to be retracted is at least reduced. In some examples, secondary lockout shoulder 30419 is positioned such that cutting member 30442 does not need to be retracted at all. In such instances, as a result, an unused staple cartridge 30320 can be inserted into channel 30410 and the staple firing stroke can be completed without the need to retract firing member 30440.

In addition to the above, the interaction between lockout pin 30449 and lockout shoulder 30419 functions as a missing cartridge lockout. When staple cartridge 30320 is loaded within cartridge channel 30410 , cutting member 30442 engages ramp 30327 of staple cartridge 30320 which lifts lockout pin 30449 above lockout shoulder 30419 . In other words, the presence of staple cartridge 30320 within cartridge channel 30010 overrides the secondary staple firing lockout. However, in order to lift the lockout pin 30045 over the lockout shoulder 30015 as described above, the nose 30043 of the cutting member 30442 must land on the shoulder 30033 of the sled 30030, thus reducing the staple firing stroke. Thread 30030 of staple cartridge 30320 must be properly positioned within staple cartridge 30320 to complete. In other words, having the sled 30030 in the staple cartridge 30320 in its unfired position disables the primary fire lockout and having the staple cartridge 30320 in the cartridge channel 30410 disables the secondary fire lockout. . Thus, stapling instrument 30400 comprises a primary missing cartridge lockout and a secondary missing cartridge lockout, with the primary missing cartridge lockout also functioning as a spent cartridge lockout.

A surgical stapling assembly 30500 is shown in FIG. Stapling instrument 30500 is similar in many respects to stapling instrument 30000 . Among other things, stapling instrument 30500 comprises a cartridge channel 30510 , a staple cartridge 30520 removably positionable within cartridge channel 30510 , a firing member 30040 and a staple firing lockout 30514 . Staple firing lockout 30514 includes, for example, a resilient metal spring mounted within cartridge channel 30510 . However, the staple firing lockout 30514 disclosed herein may be constructed of any suitable material. Staple firing lockout 30514 includes a base attached to cartridge channel 30510 and a flexible locking arm 30516 extending from the base. Each flexible locking arm 30516 moves independently of the other and defines a locking window 30515 therein releasably receiving a lockout pin 30045 extending from the firing member 30040. configured to capture. Flexible locking arm 30516 extends toward and/or inwardly against the side of firing member 30040 and is thus biased to capture lockout pin 30045. is configured to When one or both of the lockout pins 30045 are captured within the locking window 30515, the staple firing member 30040 is prevented from advancing distally over the staple firing stroke.

In addition to the above, the staple cartridge 30520 includes a cartridge body 30522, a plurality of staple cavities defined within the cartridge body 30522, and staples removably stored within the staple cavities. The staple cartridge 30520 includes a pan 30024 attached to the cartridge body 30522 and a sled configured to move distally within the staple cartridge 30520 to eject staples from the staple cartridge during a staple firing stroke. Prepare more. Similar to the above, the firing member 30040 is configured to push the sled distally to perform a staple firing stroke when the firing member 30040 is unlocked. To this end, referring to FIGS. 136 and 139, the cartridge body 30522 is configured to engage locking arm 30516 when staple cartridge 30520 is installed within cartridge channel 30510. Includes a proximally extending protrusion or key 30526 . It should be noted that the ends of locking arm 30516 flare outwardly such that locking arm 30516 is not trapped between projection 30526 and firing member 30040 when projection 30526 contacts locking arm 30516 . As a result, projection 30526 flexes locking arm 30516 laterally outwardly such that lockout pin 30045 extending from firing member 30040 engages firing lockout 30514 when staple cartridge 30520 is loaded within cartridge channel 30510 . not be placed within the lockout window 30515 of the Thus, loading staple cartridge 30520 within cartridge channel 30510 unlocks stapling instrument 30500 .

When staple cartridge 30520 is not installed within cartridge channel 30510 as described above, firing members 30040 remain locked by firing lockout 30514 and stapling instrument 30500 can be used to staple tissue in a patient. can't. When a staple cartridge is installed in a cartridge channel 30510 that does not have a protrusion or key 30526, such as staple cartridge 30020, the firing lockout 30514 is activated as shown in FIGS. It does not unlock and, as a result, the stapling instrument 30500 cannot be used to staple patient tissue. As shown in FIGS. 137 and 138, the proximal end of the cartridge body 30022 does not engage and/or displace the locking arm 30516 sufficiently. Thus, in this example, staple cartridge 30020 is an unsuitable staple cartridge because it does not unlock the staple firing drive of stapling instrument 30500, whereas staple cartridge 30520 is the staple of stapling instrument 30500. It is a suitable staple cartridge because the firing drive can be unlocked. Therefore, firing lockout 30514 is both a missing cartridge lockout and a bad cartridge lockout. The stapling instrument 30500 may further comprise a spent cartridge lockout. If an improper staple cartridge is installed in stapling instrument 30500 and stapling instrument 30500 cannot be fired, the improper staple cartridge can be removed and the proper staple cartridge, i.e., staples, can be removed. A cartridge 30520 can be loaded into the stapling instrument 30500 to unlock the staple firing drive.

Referring again to FIG. 121, when sled 30030 is not in its proper position within staple cartridge 30020, lockout pin 30045 of firing member 30040 engages lock shoulder 30015 as described above in connection with stapling instrument 30000. engage. Also, as described above, the firing member 30040 of the stapling instrument 30000 advances distally before engaging the locking shoulder 30015 and thus has time to accelerate before contacting the locking shoulder 30015. . As such, the firing member 30040 of the stapling instrument 30000 may impact the locking shoulder 30015 with considerable velocity and energy. Therefore, the locking shoulder 30015 is ruggedly designed to absorb this impact. However, it is possible for firing member 30040 to break locking shoulder 30015 , thereby unintentionally defeating the staple firing lockout of stapling instrument 30000 . Lockout 30514 of FIGS. 136 and 137 cannot eliminate these potential problems, but can reduce them. For example, the locking window 30515 of the firing lockout 30514 is sized and configured to substantially prevent proximal and distal movement of the staple firing member 30040 while the locking arm 30516 is engaged with the lockout pin 30045. configured, so there is little time for the staple firing member 30040 to accelerate before being stopped by the distal end of the locking window 30515. Further, when the lockout pin 30045 engages the distal end of the locking window 30515, tension is applied to the locking arm 30516, which may result in complete failure of the locking arm 30516, but it may cause the locking arm 30516 to fail before failure. can handle a considerable load.

As described above, any locking arm 30516 is disengaged from firing member 30040 by cartridge body 30522 when staple cartridge 30520 is loaded within stapling instrument 30500 . However, when the staple cartridge is loaded into the stapling instrument 30500, the first component of the staple cartridge unlocks the first locking arm 30516 and the second component of the staple cartridge locks the second locking arm. Alternate embodiments that unlock 30516 are also envisioned. For example, the cartridge body of the staple cartridge may unlock the first locking arm 30516 and the sled of the staple cartridge may unlock the second locking arm 30516 .

Surgical stapling instrument 30600 is shown in FIG. 140 and surgical stapling instrument 30700 is shown in FIG. Stapling instrument 30600 and stapling instrument 30700 are similar in many respects to stapling instrument 30500 . 140, stapling instrument 30600 comprises cartridge channel 30610, staple cartridge 30620 removably positionable within cartridge channel 30610, and staple firing lockout 30614 attached to cartridge channel 30610, wherein staples are and a staple firing lockout 30614 that prevents the firing member 30040 from advancing through the staple firing stroke when the cartridge 30620 is not installed within the cartridge channel 30610 . Similarly, referring to FIG. 141, stapling instrument 30700 includes cartridge channel 30710, staple cartridge 30720 removably positionable within cartridge channel 30710, and staple firing lockout 30714 attached to cartridge channel 30710. and a staple firing lockout 30714 that prevents the firing member 30040 from advancing through the staple firing stroke when the staple cartridge 30720 is not installed within the cartridge channel 30710 . However, installing a staple cartridge 30720 within the stapling instrument 30600 does not unlock the staple firing system of the stapling instrument 30600; The staple firing system of fastener 30700 is not unlocked. Thus, stapling instrument 30600 and stapling instrument 30700 are simultaneously identical without fear of being used with the wrong staple cartridge, despite the fact that staple cartridge 30620 and staple cartridge 30720 may be confusingly similar. Can be used in the operating room.

142, in addition to the above, the staple cartridge 30620 is angled such that the center of the cartridge body 30622, i.e., the portion closest to the longitudinal slot 30023, extends more proximally than the sides of the cartridge body 30622. Further provided is a cartridge body 30622 that includes a proximal end 30626 that is tapered. Staple cartridge 30620 further comprises a thread 30630 that is similar in many respects to thread 30030 and has a shape that matches, or at least substantially matches, the shape of proximal end 30626 of cartridge body 30622. A proximal end 30636 is provided. Referring again to FIG. 140 , firing lockout 30614 is similar to firing lockout 30514 . Firing lockout 30614 notably comprises a locking arm 30616 that is laterally displaced by the proximal end of cartridge body 30622 and/or the proximal end of sled 30630 to engage lockout pin 30045. Firing member 30040 is releasably retained in its unfired position until released from a locking window defined in locking arm 30616 . When staple cartridge 30620 is removed from cartridge channel 30610, locking arm 30616 resiliently returns to its locked position.

143, in addition to the above, the staple cartridge 30700 is angled such that the sides of the cartridge body 30722, ie, the portions furthest from the longitudinal slots 30023, extend more proximally than the center of the cartridge body 30722. Further provided is a cartridge body 30722 that includes a proximal end 30726 that is tapered. Staple cartridge 30720 further comprises a thread 30730 that is similar in many respects to thread 30030 and has a shape that matches, or at least substantially matches, the shape of proximal end 30726 of cartridge body 30722. It has a proximal end 30736 . Referring again to FIG. 141 , firing lockout 30714 is similar to firing lockout 30514 . Firing lockout 30714 notably includes a locking arm 30716 that is laterally displaced by the proximal end of cartridge body 30722 and/or the proximal end of sled 30730 to engage lockout pin 30045 . Firing member 30040 is releasably retained in its unfired position until released from a locking window defined in locking arm 30716 . When staple cartridge 30720 is removed from cartridge channel 30710, locking arm 30716 resiliently returns to its locked position.

Note that in addition to the above, if an attempt is made to load staple cartridge 30620 into stapling instrument 30700 , the proximal end of staple cartridge 30620 will force locking arm 30716 of firing lockout 30714 out of firing lockout 30714 from firing member 30040 . It is not displaced, or at least not sufficiently displaced, to disengage. Further, if an attempt is made to load staple cartridge 30720 into stapling instrument 30600, the proximal end of staple cartridge 30720 will cause locking arm 30616 of firing lockout 30614 to disengage firing lockout 30614 from firing member 30040. not displaced, or at least not sufficiently displaced. Accordingly, staple cartridge 30620 and staple cartridge 30720 each include a unique keying mechanism to unlock their corresponding or appropriate stapling instrument.

In various examples, further to the above, the cartridge body and/or sled of a staple cartridge or type of staple cartridge may include one or more unique keying features that can only unlock its respective stapling instrument. good. In some examples, a pan that extends below the cartridge body may include a proximal mechanism or key configured to unlock the staple firing drive of that stapling instrument. Referring to FIG. 144, cartridge pan 30824, which is similar in many respects to pan 30024, includes a proximal projection or key 30826 configured to unlock the staple firing drive of the stapling instrument. Protrusions 30826 are constructed, for example, from sheet metal that has been folded to form a tubular structure. The tubular structure is reinforced by nested interconnections including tabs 30827 and slots 30828 .

Surgical stapling instrument 30900 is shown in FIGS. 145 and 147 and surgical stapling instrument 31000 is shown in FIG. Stapling instruments 30900 and 31000 are similar in many respects to stapling instrument 30500 . 145, stapling instrument 30900 includes cartridge channel 30910, staple cartridge 30920 removably positionable within cartridge channel 30910, and staple firing lockout 30914 attached to cartridge channel 30910, wherein staples are and a staple firing lockout 30914 that prevents the firing member 30040 from advancing through the staple firing stroke when the cartridge 30920 is not installed within the cartridge channel 30910 . Similarly, referring to FIG. 148, a stapling instrument 31000 includes a cartridge channel, a staple cartridge 31020 removably positionable within the cartridge channel, and a staple firing lockout 31014 attached to the cartridge channel, wherein the staples are and a staple firing lockout 31014 that prevents the firing member 30040 from advancing through the staple firing stroke when the cartridge 31020 is not installed within the cartridge channel.

Note that staple firing lockout 30914 includes only one locking arm 30916 extending along the right side of firing member 30040 . However, one locking arm 30916 has a locking arm 30916 that captures the lockout pin 30045 of the firing member 30040 as shown in FIG. A locking window is defined which is preferably configured to hold and retain the firing member 30040 in its unfired position. More specifically, the cartridge body 30922 of the staple cartridge 30920 engages the locking arm 30916 when the staple cartridge 30920 is loaded within the cartridge channel 30910, causing the locking arm 30916 to flex laterally outward. A proximal protrusion or key 30926 extends from the right side of the . It should be noted that the cartridge body 30922 does not include a protrusion or key 30926 extending from the left side of the cartridge body 30922 .

Staple firing lockout 31014 also includes only one locking arm 31016 extending along the left side of firing member 30040 . However, the interior of one locking arm 31016 preferably captures the lockout pin 30045 of the firing member 30040 as shown in FIG. A locking window is defined that is configured to retain and retain the firing member 30040 in its unfired position. More specifically, the cartridge body 31022 of the staple cartridge 31020 engages the locking arm 31016 and flexes the locking arm 31016 laterally outward when the staple cartridge 31020 is installed within the stapling instrument 31000. There is a proximal projection or key 31026 extending from the left side of 31022 . It should be noted that the cartridge body 31022 does not include a protrusion or key 31026 extending from the right side of the cartridge body 31022 .

Due to the asymmetry of the cartridge bodies 30922 and 31022 and the corresponding asymmetry of the staple firing lockouts 30914 and 31014, loading the staple cartridge 31020 within the stapling instrument 30900 does not unlock the staple firing system of the stapling instrument 30900. Similarly, loading a staple cartridge 30920 into the stapling instrument 31000 does not unlock the staple firing system of the stapling instrument 31000 . Thus, stapling instruments 30900 and 31000 can be used in the same operating room at the same time without fear of being used with the wrong staple cartridge despite the fact that staple cartridges 30920 and 31020 can be confusingly similar. be able to. In some examples, the staple pattern produced by staple cartridge 30920 is different than the staple pattern produced by staple cartridge 30120, such that the anvil of stapling instrument 30900 is different from the anvil of stapling instrument 31000. It has a molded pocket configuration. In such instances, the asymmetric key/firing lockout configuration disclosed herein can prevent mismatch between the staple cavity configuration and the staple forming pocket configuration.

149 and 150, staple cartridge 31120 comprises a cartridge body 31122 containing parallel longitudinal rows of staple cavities, while staple cartridge 31220 contains transversely oriented rows of staple cavities. A cartridge body 31222 is provided. Similar to above, referring to FIG. 149, the proximal end of the cartridge body 31122 includes a key 31126 that extends from the left side of the cartridge body 31122 but does not extend from the right side or the opposite side of the cartridge body 31122; Referring to 150 , the proximal end of cartridge body 31222 includes a key 31226 that extends from the right side of cartridge body 31222 but not the left side of cartridge body 31222 . Staple cartridge 31120 (FIG. 149) is for use with a first stapling instrument having, for example, parallel longitudinal rows of anvil staple forming pockets and a left staple firing lockout such as firing lockout 31014 (FIG. 148). be done. Staple cartridge 31220 (Fig. 150), for example, is used with a second stapling instrument having a longitudinal row of transverse staple forming pockets and a right side staple firing lockout such as firing lockout 30914 (Fig. 147). be. Staple cartridge 31220 does not unlock the first stapling instrument, and similarly staple cartridge 31120 does not unlock the second stapling instrument. Thus, keys 31126 of staple cartridge 31120 cannot unlock a stapling instrument that includes transversely extending staple forming pockets, whereas keys 31226 of staple cartridge 31220 have parallel longitudinal A stapling instrument that includes staple forming pockets that extend in rows cannot be unlocked.

Note that the staple cartridge 31120 and the staple cartridge 31220 have substantially the same length and substantially the same shape. Additionally, both staple cartridges 31120 and 31220 are configured to form a staple line approximately 60 mm in length in patient tissue. However, both staple cartridges 31120 and 31220 may be configured to form staple lines that are, for example, approximately 30 mm long or 45 mm long. Further, it is possible that the cartridge body 31122 and the cartridge body 31222 have the same color. In various examples, commercial suppliers may color code the cartridge bodies of the staple cartridges they sell to indicate the size of staples stored therein. For example, a cartridge body containing unformed staples having an unformed height of about 4 mm is, for example, green. A cartridge body containing unformed staples having an unformed height of about 2.5 mm may be white, for example. Therefore, staple cartridges 31120 and 31220 can have the same color. Accordingly, a clinician may grab one staple cartridge when intended to grab another staple cartridge and install this staple cartridge in the wrong stapling instrument. The improvements disclosed herein take into account such possibilities and lock out the stapling instrument in such cases.

Surgical instrument 30800 is shown in FIGS. 151-155. Referring primarily to FIGS. 153 and 154, surgical instrument 30800 includes cartridge channel 30810, staple cartridge 30820 removably disposed within cartridge channel 30810, firing member 30040, and attached to cartridge channel 30810. a lockout 30814; Lockout 30814 includes a leaf spring 30816 including a proximal end fixed within an opening defined in cartridge channel 30810 and a distal end movable relative to the fixed proximal end. Referring primarily to FIGS. 153 and 155, lockout 30814 is one of lockout pins 30045 extending from cutting portion 30042 of firing member 30040 when staple cartridge 30820 is not installed within cartridge channel 30810. Further includes a lockout box 30815 configured to capture one and retain the firing member 30040 in the unfired position. Lockout box 30815 includes a distal wall configured to prevent distal advancement of firing member 30040 and a proximal wall configured to prevent proximal retraction of firing member 30040 . and a bottom wall connecting the proximal wall and the distal wall of the lockout box 30815. The top of lockout box 30815 is open, but can be closed.

Staple cartridge 30820 includes a cartridge body 30822 , a sled, and a pan 30824 attached to and extending below cartridge body 30822 . 152 and 154, the pan 30824 is configured to engage the leaf spring 30816 of the lockout 30814 when the staple cartridge 30820 is loaded within the cartridge channel 30810. Includes position protrusion 30826 . When protrusion 30826 contacts leaf spring 30816 , leaf spring 30816 deflects laterally to prevent lockout pin 30045 from becoming trapped within lockout box 30815 of lockout 30814 . At such point, firing member 30040 is unlocked and can be advanced distally to perform a staple firing stroke. Referring primarily to FIG. 154, the distal or free end of leaf spring 30816 extends into window 30819 defined within cartridge channel 30810 . Window 30819 provides clearance for leaf spring 30816 as leaf spring 30816 is flexed by staple cartridge 30820 . Also, the bottom sidewall of window 30819 supports the distal end of leaf spring 30816 so that the distal end is at least simply supported. In either case, lockout 30814 provides missing cartridge lockout and improper cartridge lockout for staple cartridges, such as staple cartridge 30020, which do not have the proper key to unlock stapling instrument 30800. .

As described above, the lockout 30814 is moved from the locked position (FIGS. 152 and 153) to the unlocked position (FIG. 154) when the staple cartridge 30820 is loaded into the cartridge channel 30810 of the stapling instrument 30800. This deflection is illustrated in FIG. 155 which shows the lockout 30814 in solid lines in its locked position and dashed lines in its unlocked position. Leaf spring 30816 will not deflect to unlock firing member 30040 if an improper or mismatched staple cartridge, ie, a staple cartridge that does not have a suitable key, is installed within cartridge channel 30810. or at least preferably does not flex. Note that the lockout 30814 further includes a tab 30817 extending from the leaf spring 30816 such that the tab 30817 moves laterally with the leaf spring 30816 as the lockout 30814 is deflected. As shown in FIG. 153, when the lockout 30814 is in its locked position, the tabs 30817 allow the anvil of the surgical instrument 30800, ie, the anvil 30050, to move to a closed or fully clamped position, as described in more detail below. prevent movement.

Anvil 30050 is rotatably coupled to cartridge channel 30810 about pivot pin 30051 mounted within an opening defined in cartridge channel 30810 . When the anvil 30050 is rotated toward the cartridge channel 30810 by the closure system of the surgical instrument 30800 and the staple cartridge 30820 is not loaded within the cartridge channel 30810, the bottom surface 30057 of the anvil 30050 contacts the tabs 30817 and the anvil 30050 is prevented from moving to its closed or fully clamped position. However, when the staple cartridge 30820 is loaded within the cartridge channel 30810, the tabs 30817 are such that when the anvil 30050 is closed, the anvil 30050 does not contact the tabs 30817 and the anvil 30050 is moved to its closed or fully clamped position. laterally displaced so as to obtain Thus, lockout 30814 also includes an anvil closure lockout as lockout 30814 prevents anvil 30050 from being closed when staple cartridge 30820 is not installed within cartridge channel 30810 . In such an instance, the clinician may be unable to close the anvil 30050, thus confirming that an incorrect staple cartridge is placed within the cartridge channel 30810 and/or that the staple cartridge is completely missing. will immediately notice. In such instances, the staple firing stroke of stapling instrument 30800 would also be prevented because anvil 30050 cannot be closed on tissue. In an alternative embodiment where the staple cartridge jaws rather than the anvil are rotatable, if an incorrect staple cartridge is placed in the staple cartridge jaws or the staple cartridge is completely missing from the cartridge jaws. Additionally, such a lockout can be used to prevent rotation of the staple cartridge jaws to a closed or fully clamped position.

As described above, lockout 30814 is configured to resist closure of anvil 30050 . To this end, in addition to the above, the proximal end of lockout 30814 is fixedly supported within cartridge channel 30810 and the distal end of lockout 30814 is simply supported by the sidewalls of window 30819 . This is true both when the lockout 30814 is in its locked configuration (Fig. 153) and in its unlocked configuration (Fig. 154). Thus, the lockout 30814 can function as a beam supported at both ends and can well withstand the clamping load applied by the anvil 30050. Similarly, tabs 30817 extending from lockout 30814 are also supported by cartridge channel 30810 . More specifically, tabs 30817 are positioned within slots 30818 defined within cartridge channel 30810 when lockout 30814 is in both its locked configuration (Fig. 153) and unlocked configuration (Fig. 154). is slidably supported by The lockout 30814 can thus function as a beam supported at both ends and in an intermediate position, and can well withstand the clamping loads applied by the anvil 30050. However, any suitable sensor configuration may be used.

As described above, lockout 30814 is configured to prevent anvil 30050 of stapling instrument 30800 from being moved to a closed or fully clamped position when staple cartridge 30820 is not installed within cartridge channel 30810. It is However, lockout 30814 is configured to prevent anvil 30050 from substantially fully closing when staple cartridge 30820 is not installed within cartridge channel 30810 . In such instances, the anvil 30050 can move slightly toward the cartridge channel 30810. However, anvil 30050 is significantly opened when anvil 30050 contacts tab 30817 of lockout 30814 . In various alternative embodiments, anvil 30050 is prevented from any movement until staple cartridge 30820 is loaded within cartridge channel 30810 . In either case, the stapling instrument 30800 cannot be inserted through the trocar and into the patient when the anvil 30050 is locked out. More specifically, the trocar includes an internal passageway or cannula sized and configured to closely receive a surgical instrument therein such that when the anvil 30050 is locked out as described above, the anvil 30050 is closed. The distance between 30050 and cartridge channel 30810 is too great for stapling instrument 30800 to fit through the internal passageway. As a result, in such an example, a clinician using stapling instrument 30800 will be advised that an improper staple cartridge has been placed within stapling instrument 30800 before stapling instrument 30800 is inserted into a patient. will notice.

A staple cartridge 31520 is shown in FIG. 155A. Staple cartridge 31520 comprises a cartridge body 31522 and a pan 31524 attached to cartridge body 31522 . Pan 31524 includes locking arms 31521 engaged in transverse channels defined within cartridge body 31522 that retain pan 31524 to cartridge body 31522 . Pan 31524 is constructed of stamped metal, such as stainless steel. Pan 31524 includes two sides, one on each side of longitudinal slot 30023 . Each side of the pan 31524 extends along a side of the cartridge body 31522 and under a portion of the cartridge body 31522 . Each side of pan 31524 further includes a proximal end 31527 that surrounds the proximal end of cartridge body 31522 . The proximal end 31527 extends orthogonally, or at least substantially orthogonally, to the sides of the pan 31524 . Each proximal end 31527 includes a tab that is folded to form a proximally extending key 31526 . Similar to the above, the key 31526 is configured to unlock the staple firing system of the stapling instrument when the staple cartridge 31520 is installed within the stapling instrument.

In addition to the above, each key 31526 includes a rounded proximal end formed by outwardly folding a tab such that the end of the tab is pulled back to contact proximal end 31527 . As a result, the key 31526 is robust and flexing of the key 31526 is prevented or at least substantially reduced. Thus, the key 31526 positively deflects the firing system lock to unlock the firing system when the staple cartridge 31520 is installed within the stapling instrument. Each proximal end 31527 further includes one or more retaining teeth 31529 that extend into slots 31528 defined in proximal end 31527 . Slot 31528 facilitates folding of proximal end 31527 and prevents or at least limits movement and/or deflection within key 31526 . Teeth 31529 bite into proximal end 31527 to retain key 31526 in its collapsed configuration.

A staple cartridge 31620 is shown in FIG. 155B. Staple cartridge 31620 comprises a cartridge body 31522 and a pan 31624 attached to cartridge body 31522 . Pan 31624 includes locking arms 31621 engaged in transverse channels defined within cartridge body 31522 that retain pan 31624 to cartridge body 31522 . Pan 31624 is constructed of stamped metal, such as stainless steel. Pan 31624 includes two sides, one on each side of longitudinal slot 30023 . Each side of pan 31624 extends along a side of cartridge body 31522 and under a portion of cartridge body 31522 . Each side of the pan 31624 further includes a proximal end that surrounds the proximal end of the cartridge body 31522 below. The proximal end extends orthogonal, or at least substantially orthogonal, to the sides of pan 31624 . Each proximal end includes a tab folded to form a proximally extending key 31626 . Similar to above, the key 31626 is configured to unlock the staple firing system of the stapling instrument when the staple cartridge 31620 is installed within the stapling instrument.

In addition to the above, each key 31626 includes a lateral U-shaped channel. More specifically, each key 31626 includes an inner base 31627 , a top surface 31628 extending laterally from the inner base 31627 , and a bottom surface 31629 extending laterally from an opposite side of the inner base 31627 . The U-shaped configuration of key 31626 prevents key 31626 from buckling due to longitudinal loads and/or flexing due to lateral torque. Note that key 31626 is folded from a tab extending from pan 31624 to form a gap 31625 under key 31626 . Gap 31625 is sized and configured to allow the locking pin of the firing member to pass under key 31626 during the staple firing stroke of the firing member.

A staple cartridge 31720 is shown in FIG. 155C. Staple cartridge 31720 comprises a cartridge body 31522 and a pan 31724 attached to cartridge body 31522 . Pan 31724 includes locking arms 31721 and 31721' engaged with transverse channels defined in cartridge body 31522 that retain pan 31724 in cartridge body 31522. Pan 31724 is constructed from stamped metal, such as stainless steel. Pan 31724 includes two sides, one on each side of longitudinal slot 30023 . Each side of pan 31724 extends along a side of cartridge body 31522 and under a portion of cartridge body 31522 . One side of the pan 31724 further includes a proximal end 31727 that surrounds the proximal end of the cartridge body 31522 below. The proximal end 31727 extends orthogonally, or at least substantially orthogonally, to the sides of the pan 31724 . The proximal end 31727 includes tabs that are folded to form a proximally extending key 31726 . Similar to the above, key 31726 is configured to unlock the staple firing system of the stapling instrument when staple cartridge 31720 is installed within the stapling instrument.

In addition to the above, the sides of the pan 31724 include arcuate or circular cutouts and the proximal end 31727 has arcuate or circular projections 31723 that fold into the circular cutouts around the sides of the cartridge body 31522. including. Protrusions 31723 are closely received within cutouts such that proximal end 31727 of pan 31724 is significantly stiffened or strengthened by this arrangement. Key 31726 includes an L-shaped tab bent proximally from pan 31724 . Key 31726 includes a shoulder 31728 that is bent upwardly from proximal end 31727 to form this L-shaped configuration. Shoulder 31728 includes at least one notch or strain relief 31729 configured to facilitate bending of key 31726 . The L-shaped configuration of key 31726 prevents key 31726 from buckling due to longitudinal loads and/or flexing due to lateral torque. Note that key 31726 is folded from a tab extending from pan 31724 to form gap 31725 under key 31726 . Gap 31725 is sized and configured to allow the locking pin of the firing member to pass under key 31726 during the staple firing stroke of the firing member.

A staple cartridge 31920 is shown in FIG. 155E. Staple cartridge 31920 comprises a cartridge body 31522 and a pan 31924 attached to cartridge body 31522 . Pan 31924 includes locking arms 31921 engaged in transverse channels defined within cartridge body 31522 that retain pan 31924 to cartridge body 31522 . Pan 31924 is constructed of stamped metal, such as stainless steel. Pan 31924 includes two sides, one on each side of longitudinal slot 30023 . Each side of the pan 31924 extends along a side of the cartridge body 31522 and under a portion of the cartridge body 31522 . One side of pan 31924 further includes a proximal end 31927 that surrounds the proximal end of cartridge body 31522 . The proximal end 31927 extends orthogonally, or at least substantially orthogonally, to the sides of the pan 31924 . The proximal end 31927 includes tabs that are folded to form a proximally extending key 31926 . Similar to above, the key 31926 is configured to unlock the staple firing system of the stapling instrument when the staple cartridge 31920 is installed within the stapling instrument.

In addition to the above, key 31926 includes an L-shaped tab bent proximally from pan 31924 . Key 31926 includes a shoulder 31928 that is bent upwardly from proximal end 31927 to form this L-shaped configuration. The L-shaped configuration of key 31926 prevents key 31926 from buckling due to longitudinal loads and/or flexing due to lateral torque. Additionally, the free edge of shoulder 31928 is welded, soldered, and/or brazed to proximal end 31927 to strengthen key 31926 . However, any suitable number of welds 31929 may be used to secure or reinforce key 31926 . Note that key 31926 is folded from a tab extending from pan 31924 to form gap 31925 under key 31926 . Gap 31925 is sized and configured to allow the locking pin of the firing member to pass under key 31926 during the staple firing stroke of the firing member.

A staple cartridge 31820 is shown in FIG. 155D. Staple cartridge 31820 comprises a cartridge body 31522 and a pan 31824 attached to cartridge body 31522 . Pan 31824 includes locking arms 31821 engaged in transverse channels defined within cartridge body 31522 that retain pan 31824 to cartridge body 31522 . Pan 31824 is constructed from stamped metal, such as stainless steel. Pan 31824 includes two sides, one on each side of longitudinal slot 30023 . Each side of the pan 31824 extends along a side of the cartridge body 31522 and under a portion of the cartridge body 31522 . One side of pan 31824 further includes a proximal end 31827 that surrounds the proximal end of cartridge body 31522 . The proximal end 31827 extends orthogonally, or at least substantially orthogonally, to the sides of the pan 31824 . The proximal end 31827 includes tabs that are folded to form a proximally extending key 31826 . Similar to above, the key 31826 is configured to unlock the staple firing system of the stapling instrument when the staple cartridge 31820 is installed within the stapling instrument.

In addition to the above, the key 31826 includes a rounded proximal end formed by outwardly folding the tab such that the end of the tab is pulled back to contact the proximal end 31827 . As a result, the key 31826 is robust and flexing of the key 31826 is prevented or at least substantially reduced. Thus, the key 31826 positively deflects the firing system to unlock the firing system when the staple cartridge 31820 is installed within the stapling instrument. Proximal end 31827 further includes one or more retaining teeth 31829 that extend into slots 31828 defined in proximal end 31827 . Slot 31828 facilitates folding of proximal end 31827 to prevent or at least limit movement and/or deflection within key 31826 . Teeth 31829 bite into proximal end 31827 to retain key 31826 in its collapsed configuration. Note that key 31826 is folded from a tab extending from pan 31824 to form gap 31825 under key 31826 . Gap 31825 is sized and configured to allow the locking pin of the firing member to pass under key 31826 during the staple firing stroke of the firing member.

Many of the lockouts disclosed herein are overridden when a matching or appropriate staple cartridge is installed within the stapling instrument. Once installed, the staple cartridge is locked in place within the stapling instrument. In such instances, little, if any, relative movement is possible between the staple cartridge and the stapling instrument until the staple cartridge is removed from the stapling instrument.

In various examples, a surgical stapling assembly includes a shaft and an end effector extending distally from the shaft, the end effector having a first jaw and a and a rotatable second jaw. The surgical stapling assembly has a lockout configured to prevent accidental firing of the surgical stapling assembly and/or clamping of the surgical stapling assembly until the lockout member unlocks the lockout member. You may provide a member. The lockout key, for example, can be part of a staple cartridge configured to be attached to one of the first jaw and the second jaw. In particular, the lockout key ensures that when the staple cartridge is installed within the surgical stapling assembly, the staple cartridge engages the lockout member when the staple cartridge has threads in its unfired position indicating that the staple cartridge is not in use. It may be part of the threads of the staple cartridge so that it can be unlocked. In at least one example, further action may be required to unlock the lockout with the lockout key. For example, the end effector may be required to achieve a full clamping configuration before the lockout key can unlock the lockout member. An example of a lockout is disclosed in U.S. Patent Application Publication No. 2016/0249921, now U.S. Pat. STRAIN RELIEF".

In at least one example, a surgical stapling assembly, such as those described above, may be used with a surgical robot. The surgical stapling assembly can be mounted on a robotic system and configured to be manipulated by a robotic arm of the robotic system. These robotic systems allow the surgeon to remain outside the sterile field in which the patient resides. In at least one example, a technician and/or another surgeon may be positioned within the confines of the sterile field, for example, to monitor the interface between the tool and the patient. The technician and/or surgeon can attach and detach instruments from the robotic arm during a surgical procedure. In some instances, it may be advantageous to be able to actively bypass lockout members of surgical stapling assemblies. By providing this feature, the lockout means of the staple cartridge can be manually disabled by the surgeon or technician if the lockout means cannot be automatically disabled for some reason. By providing this feature, the surgeon can test the operability of the lockout member prior to using the surgical stapling assembly to confirm that the lockout member is functional. If the surgeon wishes to manually override the lockout member and fire the staple cartridge, the surgeon or clinician will know that the installed staple cartridge is the proper unfired staple cartridge and will It may be desired to fire the staple cartridge despite the fact that the out member is not actually disabled. In at least one example, the clinician may wish to exclude the lockout member from the firing sequence and prevent it from becoming part of the firing stroke. Additionally, having direct access to the lockout member within the end effector itself for manual unlocking provides advantages with or without a system for automatically disabling the lockout member. can be done. Direct access to the lockout member within the end effector eliminates additional components that may be present in systems utilizing an unlocking mechanism to unlock the lockout member further upstream of the lockout member. can. For example, additional components that may be introduced by using the unlocking mechanism further upstream of the lockout member within the shaft of the surgical instrument can jam or fail during application of the unlocking action. .

FIGS. 156-160 show a surgical stapling assembly 41000 configured to clamp, staple, and cut patient tissue. The surgical stapling assembly 41000 is attached to, detached from, and manipulated by a surgical robot and/or surgical instrument handle. is configured as Surgical stapling assembly 41000 comprises a shaft 41100 , a first jaw 41200 pivotally supported within shaft 41100 , and a second jaw 41300 attached to shaft 41100 . The first jaw 41200 is movable between an unclamped configuration and a clamped configuration to clamp and unclamp tissue disposed between the first jaw 41200 and the second jaw 41300. be. Surgical stapling assembly 41000 further comprises a staple cartridge 41230 containing a plurality of staples removably stored therein. Staple cartridge 41230 is configured to be mounted within first jaw 41200 and to be interchanged with other staple cartridges. Surgical stapling assembly 41000 further comprises a firing member 41400 extending through shaft 41100, firing member 41400 moving first jaw 41200 between an unclamped configuration and a clamped configuration. It is configured to move relative to 41300, deploy staples from staple cartridge 41230, and cut tissue using knife or blade 41422 during the firing stroke. Firing member 41400 is configured to be actuated by a surgical robot drive system and/or a surgical instrument handle. Embodiments are envisioned in which the firing member 41400 is driven by a rotating drive shaft. Embodiments are also envisioned in which jaws configured to receive a staple cartridge are fixed to the shaft and the jaws including the anvil are movable between clamped and unclamped configurations.

Surgical stapling assembly 41000 operates on firing member 41400, except when a suitable unused staple cartridge is installed within first jaw 41200 and first jaw 41200 is in a fully clamped configuration. further comprising a lockout 41500 (Fig. 160) configured to prevent the distal movement of the . In at least one example, the firing member 41400 travels a first distance between the home position and the particular position regardless of the state of the lockout 41500 to fire tissue, as described in more detail below. Clamping and unclamping can be enabled. Lockout 41500 is biased toward a locked configuration in which firing member 41400 is prevented from moving distally beyond a particular position. Lockout 41500 is movable to an unlocked configuration in which firing member 41400 can be moved distally beyond a particular position to deploy staples from staple cartridge 41230 . As will be described in more detail below, the surgical stapling assembly 41000 can be manually or artificially unlocked by the clinician to unlock the lockout 41500, i.e., move the lockout 41500 to the unlocked configuration. Further comprising an internally defined direct access orifice configured to allow for the.

First jaw 41200 includes channel 41210 configured to receive staple cartridge 41230 therein. Staple cartridge 41230 is mounted within channel 41210 and is configured to be easily replaced with another staple cartridge. Staple cartridge 41230 moves between an unfired position and a fired position to eject staples from staple cartridge 41230 when sled 41235 is pushed distally across cartridge body 41232 of staple cartridge 41230 by firing member 41400. Further includes a moveable sled 41235. Second jaw 41300 includes anvil 41320 including staple forming surface 41310 configured to form staples ejected from staple cartridge 41230 .

First jaw 41200 is movable between an unclamped configuration and a clamped configuration relative to second jaw 41300 by firing member 41400 . Other embodiments are also envisioned in which the first jaw 41300 is movable relative to the second jaw 41200 . To clamp tissue, firing member 41400 moves distally a first distance from the home position to cam first jaw 41200 into a clamped configuration. 159, firing member 41400 includes anvil cam portion 41423 configured to engage ramp 41332 of anvil channel 41330 defined in second jaw 41300, and anvil cam portion 41423 of first jaw 41200. and a channel cam portion 41424 configured to engage the ramp 41222 of the bottom surface 41220 . Anvil cam portion 41423 and channel cam portion 41424 extend laterally from distal portion 41420 of firing member 41400 to engage first jaw 41200 as firing member distal portion 41420 moves through its firing stroke. It is configured to control the distance between it and the second jaw 41300 . During the first distance described above, the anvil cam portion 41423 and the channel cam portion 41424 engage the first and second jaws 41200, 41300 to cam the first jaw 41200 into the clamp configuration. Further distal movement of distal portion 41420 of firing member 41400 causes first and second jaws 41200, 41300 to be held against one another during the firing stroke, pushing sled 41235 distally. , ejects the staples stored in the staple cartridge 41230 .

Surgical stapling assembly 41000 is configured such that the firing member does not move unless a suitable unused staple cartridge is installed within first jaw 41200 and first jaw 41200 is fully clamped. Further comprising a lockout 41500 configured to prevent distal advancement beyond the first distance. The lockout 41500 is pivotally supported within the shaft 41100 to allow the firing member 41400 to travel over a first distance to complete the firing stroke (FIG. 157) and an unlocking configuration (FIG. 157). 41400 includes a lockout member 41510 movable to and from a locking configuration (FIG. 158) that prevents 41400 from moving beyond a first distance. Lockout member 41510 is biased into the locked configuration by spring 41520 . A suitable unused staple cartridge installed within channel 41210 can overcome the bias applied by spring 41520 when first jaw 41200 is moved to the clamped configuration.

In order to unlock the lockout 41500, the first jaw 41200 must be moved into its clamped configuration to engage the sled 41235 with the lockout member 41510 to unlock the lockout member 41510. Sled 41235 cannot defeat lockout 41500 when first jaw 41200 is not in its clamping configuration. Embodiments are envisioned in which the cartridge jaws are not pivotable, but the anvil jaws are pivotable. In such embodiments, sled 41235 can override lockout 41500 simply by inserting a staple cartridge. In such embodiments, the lockout 41500 can be disabled prior to applying any clamping motion to the anvil jaws.

In order to unlock lockout 41500 as described above, a suitable unused staple cartridge must be installed within first jaw 41200 of surgical stapling assembly 41000 . Staple cartridge 41230 includes a sled 41235 with a lockout key 41237 extending proximally therefrom. Lockout key 41237 is configured to move lockout member 41510 to the unlocked configuration when sled 41235 is in the unfired position and first jaw 41200 is moved to the clamped configuration. To unlock the lockout, the lockout key 41237 defines the lockout ledge or leg 41511 of the lockout member 41510 within the firing shaft or bar 41410 of the firing member 41400 such that the first jaw 41200 Lockout member 41510 is moved away from lockout notch 41412 which, when moved to the clamped configuration, prevents distal movement of firing member 41400 beyond the initial distance used for clamping. Pivot to unlocked configuration. Lockout member 41510 includes a pair of arms 41512 extending distally from lockout ledge 41511 configured to straddle firing member 41400 as firing member 41400 moves through its firing stroke.

FIG. 157 shows lockout key 41237 engaging distal end 41516 of arm 41512 on distal end 41515 of lockout member 41510 . As shown in FIG. 157, lockout member 41510 is pivoted relative to shaft 41100 about nub 41513 (FIG. 160) of lockout member 41510 to an unlocked configuration. When the lockout member 41510 is in the unlocked configuration, the lockout notch 41412 of the firing shaft 41410 is spaced from the lockout ledge 41511 of the lockout member 41510 thereby allowing the firing member 41400 to travel farther through the staple cartridge 41230. Allows you to move laterally. Referring to FIG. 158, when the lockout key 41237 is not present when the first jaw 41200 is clamped into the clamping configuration, the lockout member 41510 is spring biased against the tab 41514 (FIG. 160) of the lockout member 41510. 41520 (FIG. 159) causes lockout ledge 41511 to engage notch 41412 in firing shaft 41410 to provide a locking configuration that prevents distal movement of firing member 41400 beyond the initial distance used for clamping. Remains energized.

As described above, the surgical stapling assembly 41000 has an internally defined direct access orifice 41425 configured to allow a clinician to artificially move the lockout member 41510 to the unlocked configuration. Prepare more. Opening 41425 may be disposed in any suitable component to allow tool 41590 to access lockout member 41510 through orifice 41425 to move lockout member 41510 to the unlocked configuration. . Orifice 41425 is defined in channel cam portion 41424 of distal portion 41420 of firing member 41400 . Orifice 41425 may include, for example, an access slit defined within channel cam portion 41424 . In at least one example, orifice 41425 is defined in shaft 41100 and/or components thereof. Lockout member 41510 is nonetheless directly accessible through orifice 41425 . The tool 41590 comprises a hook portion 41591 configured to be inserted through the orifice 41425 and an opening 41517 defined between the arms 41512 of the lockout member 41510, the hook portion 41591 hooking above the ledge 41511. or latch and pull ledge 41511 to overcome the spring bias biasing lockout member 41510 to the locked configuration and pivot lockout member 41510 to the unlocked configuration. The orifice 41425 can be configured so that commonly avoidable tools such as, for example, screwdrivers, do not fit within the orifice or within the external access opening 41425 . A portion of the lockout member 41510 is shown in a dashed unlocked configuration with a tool 41590 placing the lockout member 41510 in the unlocked configuration. Arm 41512' and ledge 41511' show arm 41512 and ledge 41511 of lockout member 41510 in a dashed unlocked configuration.

When the lockout member 41510 is manually or artificially overridden, moving the lockout 41500 to the unlocked configuration, the firing member 41400 moves distally beyond the unfired position and into the staple cartridge 41230. it becomes possible to The unfired position is defined as the position after clamping but before firing. Upon distal advancement of firing member 41400 beyond its unfired position, tool 41590 is disengaged from lockout member 41510 and removed from orifice 41425, allowing lockout 41500 to resume normal operation. enable. For example, the lockout member 41510 pivots to the locked configuration when the firing member 41400 returns to the unfired position after at least partially firing the staple cartridge. During the firing stroke, lockout member 41510 is accessible by tool 41590 through secondary access opening 41160 defined between the proximal end of channel 41210 and the distal end of shaft 41100 . However, the lockout member 41510 remains disabled during the staple firing stroke. In at least one example, a direct access orifice can be disposed, for example, in shaft 41100 to provide access to lockout member 41510 during the firing stroke of firing member 41400. In at least one example, secondary access opening 41160 includes a primary lockout access opening.

Lockout 41500 may be located in any suitable location. In at least one example, the lockout 41500 may be located proximal to the distal portion 41420 of the firing member 41400 when the firing member 41400 is in its most proximal position (such as the position shown in FIG. 159). . In such instances, access openings may be defined in the shaft housing or frame of surgical stapling assembly 41000 . In at least one example, the access opening is defined within channel 41210 .

In at least one example, tool 41590 can be inserted through direct access opening 41425 to unlock lockout 41500 prior to inserting staple cartridge 41230 into channel 41210 . The lockout 41500 can be moved to its unlocked configuration prior to insertion of the staple cartridge to prevent the lockout 41500 from engaging the staple cartridge during installation, thereby assisting installation of the staple cartridge. Some lockouts quickly deplete a staple cartridge and use an improper staple cartridge by pushing the staple cartridge sled from its unfired, fireable position to its unfired, non-fireable position. make it impossible. Additionally, such a lockout can push out the threads of the appropriate staple cartridge during installation of the appropriate staple cartridge. By unlocking the lockout 41500 before installing the staple cartridge, the appropriate staple cartridge can be prevented from being accidentally disabled during installation.

FIGS. 161 and 162 show a surgical stapling assembly 42000 for use in clamping, stapling and cutting patient tissue. Surgical stapling assembly 42000 is similar in many respects to other stapling assemblies described herein. Surgical stapling assembly 42000 comprises a firing assembly 42100 and a cartridge channel 42200 configured to receive a staple cartridge therein. Firing assembly 42100 is configured to expel threads of an appropriate unused staple cartridge mounted within cartridge channel 42200 to deploy the staples of the staple cartridge and cut the stapled tissue. Surgical stapling assembly 42000 further comprises a lockout 42300 configured to prevent advancement of firing assembly 42100 over an improper staple cartridge. Lockout 42300 includes a spring 42310 that biases lockout 42300 toward the locked configuration. Lockout 42300 is configured to be pushed proximally by a suitable unused staple cartridge to unlock firing assembly 42100 . It should be noted that the lockout 42300 is configured so that the lockout 42300 does not accidentally push the sled of the appropriate staple cartridge into a position that places the firing assembly 42100 in a locked out state. Lockout 42300 may employ any suitable lockout method. Firing assembly 42100 is similar to other firing assemblies described herein.

Surgical stapling assembly 42000 further comprises a direct access notch or opening 42210 defined in the bottom of cartridge channel 42200 at the proximal end of longitudinal slot 42230 defined within cartridge channel 42200 . Firing assembly 42100 is moveable through slot 42230 of cartridge channel 42200 during a staple firing stroke. Direct access notch 42210 allows a tool to be inserted into surgical stapling assembly 42000 to access lockout 42300 directly. A tool can be inserted through the direct access notch 42210 to move the lockout 42300 to the unlocked configuration (FIG. 162). Unlocking the lockout 42300 in this manner is referred to as manually unlocking the lockout 42300 because the unused staple cartridges have not automatically unlocked the lockout 42300 for some reason. obtain. The direct access cutout 42210 includes a proximal end 42211 and a distal end 42213 with a wider cutout portion than the proximal end 42211 . A wider cutout portion of the distal end 42213 can assist in proper insertion of the tool into the channel 42200 . For example, the tool may include a locking engagement portion that fits on the distal end 42213 but does not fit on the proximal end 42211 to eliminate the possibility of accidentally inserting the tool into the proximal end 42211. good too. Additionally, lockout 42300 is directly visible through direct access cutout 42210 along with its position relative to other components of surgical stapling assembly 42000 . Nevertheless, a tool can be inserted through the notch 42210 to pull and/or push the lockout 42300 proximally to overcome the spring bias and move the lockout 42300 to the unlocked configuration. The tool can also be removed and disengaged from the lockout 42300 so that the lockout 42300 can resume normal operation. Additionally, providing the ability to manually move the lockout 42300 allows the clinician to move into the cartridge channel 42200 so that the lockout 42300 does not move the sled of a staple cartridge prematurely installed within the cartridge channel 42200 . Lockout 42300 can be moved from its locked position prior to installation of the staple cartridge.

163 and 164 show firing assembly 43100, frame 43400 supporting firing assembly 43100 therein, cartridge channel 43300 pivotally attached to frame 43400, and lockout of surgical stapling assembly 43000 disabled. A surgical stapling assembly 43000 is shown comprising a lockout key mechanism 43500 configured to. Surgical stapling assembly 43000 may include any suitable lockout. However, a diving knife lockout is described below in which the firing assembly 43100 drops into the lock recess when no suitable unused staple cartridge is placed in the cartridge channel 43300.

Firing assembly 43100 includes a firing shaft 43110 and a firing member 43120 attached to the distal end of firing shaft 43110 . Although a linear firing shaft is illustrated, firing assembly 43100 may be configured with a rotating drive shaft. Firing shaft 43110 is configured to be actuated by, for example, a surgical instrument handle and/or a firing driver of a surgical robot. Any suitable drive mechanism can be used. Firing member 43120 includes an anvil cam pin 43122 and a channel cam pin 43123 extending laterally therefrom. Pins 43122, 43123 are configured to control the clamping pressure applied to tissue captured within surgical stapling assembly 43000 during the firing stroke. Firing member 43120 further includes a cutting edge 43121 configured to cut clamped tissue. The firing member 43120 has a ledge or ledge configured to engage and/or rest on the sled of an unfired suitable staple cartridge such that the firing member 43120 does not fall into the lockout recess. Further includes distal nose 43124 .

Firing assembly 43100 further includes extension 43111 configured to be biased downward toward channel 43300 by a spring member mounted within frame 43400 . As will be described in more detail below, downward biasing of extension 43111 biases firing assembly 43100 into its lockout condition. When a suitable, unused staple cartridge is installed within cartridge channel 43300, the downward bias is overcome.

Lockout key mechanism 43500 includes spring 43530 , wedge 43520 slidably supported within frame 43400 , and lifter spring 43510 including proximal end 43511 attached to frame 43400 . Wedge 43520 includes ramp 43521 upon which distal end 43512 of lifter spring 43510 rests. As the staple cartridge is inserted into cartridge channel 43300, staple cartridge 43200 pushes wedge 43520 proximally. Proximal movement of the wedge 43520 causes the lifter spring 43510 to lift the firing member 43120, overriding the first stage of lockout. A lifter spring 43510 is defined on a distal end 43512 configured to engage a lifter pin 43125 extending laterally from the firing member 43120 when the lifter spring 43510 is lifted by the wedge 43520 of the staple cartridge 43200. notch 43513.

Once the first stage of lockout is overcome, the firing assembly 43100 advances distally to evaluate the second stage of lockout. This second stage of lockout is disabled when the sled of staple cartridge 43200 is in its proximal, unfired position. Similar to the above, firing shaft 43110 may be lifted onto the sled by staple cartridge 43200 as firing shaft 43110 is advanced distally.

To land the nose 43124 of the firing member 43120 on the unfired sled of the staple cartridge 43200 to defeat the second stage of lockout and prevent the firing member 43120 from falling into the lockout recess: A cartridge body key 43211 is provided on the proximal end 43201 of the cartridge body 43210 . Referring now to FIG. 164 , when staple cartridge 43200 is installed within cartridge channel 43300 , cartridge body key 43211 forces wedge 43520 proximally, overcoming the spring bias provided by spring 43530 . As wedge 43520 is pushed proximally, wedge 43520 lifts lifter spring 43510 . At this point notch 43513 can grab lifter pin 43125 and lift firing assembly 43100 . Raising the firing assembly 43100 in this manner may be referred to as disabling the first stage of lockout. It should be noted that staple cartridges that do not have the appropriate cartridge lockout key may be able to be installed within cartridge channel 43300 but not lift assembly 43100 . When staple cartridge 43200 is installed in cartridge channel 43300 and firing assembly 43100 is raised, notch 43513 fires so that nose 43124 can land on an unfired sled in staple cartridge 43200 to avoid the lockout recess. With the assembly 43100 held at the proper height and distance, the firing assembly 43100 can be advanced distally. Landing the nose 43124 on an unfired sled may be referred to as defeating the second phase of lockout. If the sled within staple cartridge 43200 is not in its unfired position, firing assembly 43100 will fall into the lockout recess and will not be able to advance distally beyond its locking configuration. In at least one example, cartridge body key 43211 extends proximally from cartridge body pan 43220 of staple cartridge 43200 .

FIG. 165 shows a first staple cartridge 43610 including a proximal end 43611 and a lockout key 43613 extending from the proximal end 43611. FIG. Lockout key 43613 has a first shape. FIG. 165 shows a second staple cartridge 43620 including a proximal end 43621 and a lockout key 43623 extending from the proximal end 43621. FIG. Lockout key 43623 has a second shape different from the first shape of lockout key 43613 . The first staple cartridge 43610 is configured to unlock only the stapling instrument with which it fits and the second staple cartridge 43620 is configured to unlock only the stapling instrument with which it fits. there is

Referring again to the lockout key mechanism 43500 of FIGS. 163 and 164, cartridges using different key shapes can be used to ensure that the firing member is lifted at the proper position and height. Referring to FIG. 165, lifting the firing member at different positions causes different lift timing of the firing member. This can be used to prevent an incorrect staple cartridge from unlocking an incorrect instrument. 166 and 167 include graphs showing different lift timings 43610', 43620' and displacements 43610", 43620" provided by cartridges 43610, 43620. Staple cartridge 43610 is configured to lift the firing members earlier than staple cartridge 43620. In a compatible surgical instrument, the first staple cartridge 43610 is configured so that the firing members land on unfired threads of the first staple cartridge 43610 to override the lockout and advance the firing members distally. A wedge, such as the wedges described herein, lifts the firing member at the proper time and location so that the staple firing stroke can be performed. In a non-compliant surgical instrument, the first staple cartridge 43610 may drop before the firing member reaches the sled, for example by causing the wedge to lift the firing member at the wrong time and position, or the firing member may be Pushes the firing member distally before being lifted onto the sled. In both of these situations caused by the installation of an incompatible cartridge and instrument, attempts to move the firing member through the firing stroke will cause the firing member to lock out. A second staple cartridge 43620 operates in a similar manner. However, the second staple cartridge 43620 cannot unlock instruments that are compatible with the first staple cartridge 43610 and vice versa.

Figures 168 and 169 show a system 44000 comprising a first cartridge 44100 (Figure 168) and a second cartridge 44200 (Figure 169). The first staple cartridge 44100 includes a proximal end 44111, a distal end 44112, and a plurality of staple cavities 44114 arranged in rows extending between the proximal end 44111 and the distal end 44112. Includes cartridge body 44110 . The first staple cartridge 44100 further includes a cartridge pan 44130 configured to retain staples within the cartridge body 44110 and a sled 44120 configured to deploy the staples from the cartridge body 44110. Further defined within cartridge body 44110 is a longitudinal slot 44113 configured to receive a firing member of a surgical stapling assembly. The longitudinal slot 44113 defines first and second sides labeled "A" and "B" respectively. Cartridge body 44110 further includes a lockout key 44116 extending from a proximal face 44115 of first side "A" of cartridge body 44110 .

The second staple cartridge 44200 includes a proximal end 44211, a distal end 44212, and a plurality of staple cavities 44214 arranged in rows extending between the proximal end 44211 and the distal end 44212. Includes cartridge body 44210 . The second staple cartridge 44200 further includes a cartridge pan 44230 configured to retain staples within the cartridge body 44210 and a sled 44220 configured to deploy the staples from the cartridge body 44210. Further defined within cartridge body 44210 is a longitudinal slot 44213 configured to receive a firing member of a surgical stapling assembly. The longitudinal slot 44213 defines first and second sides labeled "A" and "B" respectively. Cartridge body 44210 further includes a lockout key 44216 extending from a proximal face 44215 of second side "B" of cartridge body 44210 .

Staple cavities 44114 include three rows on either side of longitudinal slot 44113 . Each row defines a row axis along which each staple cavity within that row is aligned. In other words, the proximal and distal ends of each cavity in a row are aligned with the row axis of that row. Staple cavities 44214 include three rows on either side of longitudinal slot 44213 . Each row defines a row axis along which each staple cavity within that row is laterally aligned. Each side of the staple cartridge 44200 has an outer row of staple cartridges 44214, an inner row of staple cavities 44214, and a central row of staple cavities 44214 positioned between the outer row of staple cartridges 44214 and the inner row of staple cartridges 44214. including. The center row staple cavities 44214 define a cavity axis that is transverse to the cavity axis defined by the inner row staple cavities 44214 and the outer row staple cavities 44214 .

System 44000 provides a method of preventing an inappropriate staple cartridge from being used with a surgical stapling assembly by providing a lockout key for each cartridge on a different side of the staple cartridge. By providing lockout keys on different sides of the staple cartridge, it is possible to use a stapling assembly that includes corresponding staple forming pockets for the first staple cartridge 44100 and the second staple cartridge 44200 with the second staple cartridge 44200. Use of a stapling assembly that includes corresponding staple forming pockets for cartridge 44200 with first staple cartridge 44100 is prevented. Therefore, the first staple cartridge 44100 cannot unlock the firing lockout of the surgical stapling assembly for the second staple cartridge 44200, and the second staple cartridge 44200 is not compatible with the first staple cartridge. The firing lockout of the 44100 surgical stapling assembly cannot be unlocked. This prevents improper cartridge installation that could result in staple deployment against anvils having non-compliant staple forming pockets.

FIGS. 170-179 show a surgical stapling assembly 45000 configured to clamp, staple, and cut patient tissue. Surgical stapling assembly 45000 can be used with surgical robots and/or surgical instrument handles. The surgical stapling assembly 45000 includes a first jaw 45200, a second jaw 45400 movable relative to the first jaw 45200 between an unclamped configuration and a clamped configuration, and a firing assembly 45500. , provided. Surgical stapling assembly 45000 further comprises a replaceable staple cartridge 45300 comprising a plurality of staples removably stored therein configured to be deployed by firing assembly 45500 . First jaw 45200 includes channel 45210 configured to receive replaceable staple cartridge 45300 . Second jaw 45400 includes anvil 45410 including staple forming surface 45415 configured to form staples deployed from staple cartridge 45300 . The first jaw 45200 further includes a pin opening 45212 (Fig. 171) into which the pivot pin 45413 of the second jaw 45400 is received to allow the second jaw 45400 to be attached to the first jaw. Allows to pivot relative to 45200. Embodiments are envisioned in which the fixed jaw includes the anvil and the movable jaw includes the channel and staple cartridge.

To clamp tissue using the surgical stapling assembly 45000, the second jaw 45400 includes a camming surface 45412 formed on its proximal end 45411 which is engaged by the closure member. configured to be The closure member includes, for example, a closure tube, but may include any other suitable configuration. The closure member is configured to engage and slide along the cam surface 45412 to cam the second jaw 45400 toward the channel 45210 from the unclamped configuration to the clamped configuration. To unclamp the surgical stapling assembly 45000, the closure member is retracted proximally. A spring may be provided to bias the second jaw 45400 to the unclamped configuration when the closure member disengages the cam surface 45412 .

In order to staple and cut tissue using surgical stapling assembly 45000, a suitable unused staple cartridge must be installed within surgical stapling assembly 45000. Once a suitable unused staple cartridge is installed within channel 45210, firing assembly 45500 is actuated over staple cartridge 45300 by pushing sled 45340 of staple cartridge 45300 distally from the unfired position to the fired position. , the staples stored in the staple cartridge 45300 can be deployed. As the firing assembly 45500 is moved through the staple firing stroke, the cutting edge 45523 of the firing assembly cuts the tissue clamped between the first jaw 45200 and the second jaw 45400. In at least one example, the cutting edge 45523 follows behind staple deployment to prevent tissue from being cut before the tissue is stapled.

172-175, the firing assembly 45500 includes a firing member 45520 including a cutting edge 45523 and a distance between the first jaw 45200 and the second jaw 45400 during the staple firing stroke. anvil cam portion 45521 and channel cam portion 45522 configured to control and, as described in more detail below, disposed between anvil cam portion 45521 and channel cam portion 45522 to drop into the lockout. a laterally extending portion 45525 configured to: Firing member 45520 further includes a tail 45526 extending proximally therefrom, which is configured to interface with a spring 45240 mounted within the shaft, as described in more detail below. .

To prevent the firing assembly 45500 from advancing over an improper and/or used staple cartridge, the surgical stapling assembly 45000 further comprises a lockout system. A surgical stapling assembly 45000 is disclosed herein in which the firing assembly 45500 will drop into the lockout pocket if a suitable unused staple cartridge is not installed within the surgical stapling assembly 45000 It has a diving knife lockout like. A suitable unused staple cartridge, such as staple cartridge 45300, is configured to prevent firing assembly 45500 from falling into a lockout pocket by lifting firing assembly 45500 when staple cartridge 45300 is unused. It is In such instances, the distal end of the firing assembly lands on the unfired sled of staple cartridge 45300. Firing assembly 45500 can then be advanced over staple cartridge 45300 .

The staple cartridge 45300 lifts the firing assembly 45500 to the proper height and distance to land the firing assembly 45500 on the unfired sled and locks to override the lockout of the surgical stapling assembly 45000. Includes out key 45330. Staple cartridge 45300 further includes a cartridge body 45310 including a proximal end 45301 including a proximal surface 45313 and a longitudinal slot 45311 configured to receive firing assembly 45500 during a staple firing stroke. Lockout key 45330 extends proximally from proximal face 45313 of cartridge body 45310 and includes a pair of protrusions that define a proximal longitudinal slot portion 45333 of longitudinal slot 45311 . Proximal longitudinal slot portion 45333 is configured to span firing member 45520 during installation of staple cartridge 45300 within channel 45210 . Each projection of lockout key 45330 includes a beveled surface or portion 45331 and a non-beveled portion or surface 45332 . Staple cartridge 45300 further includes pan 45320 configured to retain staples within cartridge body 45310 . Pan 45320 is configured to clip onto deck 45312 of cartridge body 45310 . The pan 45320 may be removably attached to the cartridge body 45310 by a series of hooks 45321 formed on sidewalls of the cartridge pan 45320 and configured to hookably engage corresponding portions of the cartridge body 45310 . good. In at least one example, the pan may include a lockout key.

Firing assembly 45500 includes a firing shaft 45510 configured to transmit firing motion to firing member 45520 . Firing member 45520 is attached to distal end 45513 of firing shaft 45510 . Firing member 45520 is biased downward by a spring 45420 mounted within the shaft. More specifically, the spring 45420 forces the tail 45526 of the firing member 45520 downward to bias the firing member 45520 when the firing member 45520 is not lifted upwardly out of the firing lockout. To lift the firing assembly 45500, the surgical stapling assembly 45000 includes a floating pin 45600 positioned behind the firing members 45520 of the firing assembly 45500. Floating pins 45600 are supported within slots or channels 45213 defined in the sides of staple cartridge channel 45210 . Floating pin 45600 is configured to move vertically within slot 45213 by angled surface 45331 . More specifically, floating pin 45600 is pushed up into staple cartridge channel 45210 by lockout key 45330 which in turn contacts the bottom edge of firing member 45520 and pushes firing member 45520 up. Thus, the floating pin 45600 prevents the firing member 45520 from entering the firing lockout during installation of the staple cartridge 45300 within the staple cartridge channel 45210 . Lockout key 45330 thus overcomes the downward spring bias applied to firing member 45520 by spring 45240 .

With staple cartridge 45300 fully installed and firing assembly 45500 elevated to the position shown in FIG. Thus, the first stage of lockout is overridden using the appropriate lockout key. When sled 45340 is in its unfired position, distal nose or ledge 45524 of firing member 45520 lands on corresponding platform 45341 of sled 45340 to avoid lockout as described above. When the sled 45340 is in its unfired position, landing the distal nose 45524 of the firing member 45520 on the platform 45341 of the sled 45340 defeats the second stage of lockout. As the firing assembly 45500 advances distally, the bottom surface 45511 overcomes the floating pin 45600 and the height of the firing assembly 45500 increases the engagement between the floating pin 45600, the bottom surface 45511 of the firing shaft 45510, and the lockout key 45600. adjusted according to the

The height of the firing assembly 45500 is adjusted by engagement between the floating pin 45600, the bottom surface 45511 of the firing shaft 45510, and the lockout key 45600, so that the firing shaft 45510 is aligned with the threads 45340 of the staple cartridge 45300 to When not in the unfired position, the firing assembly 45500 is configured so that it can still drop into the lockout. 176 and 177, bottom surface 45511 includes a notch 45515 defined proximal to distal end 45513 of firing shaft 45510. Referring to FIGS. Notch 45515 is configured so that firing shaft 45510 drops into lockout when sled 45340 is not in its unfired position. FIG. 176 shows staple cartridge 45300 installed within channel 45210 . However, sled 45340 is not in its unfired position. Thus, referring to FIG. 177, the firing shaft 45510 is not lifted up by the floating pin 45600 sufficiently to lift the firing shaft 45510 out of the lockout. Instead, firing shaft 45510 is pulled down by spring 45240 as firing assembly 45500 is distally advanced by floating pin 45600 which fits into notch 45515 . In order to perform a staple firing stroke, the incorrect cartridge must be removed and replaced with a suitable unfired staple cartridge.

If the staple cartridge is installed in a surgical stapling assembly that does not have a suitable lockout key, the floating pin 45600 will remain in its lowest position shown in FIG. Attempting to advance the firing assembly 45500 distally does not allow the firing assembly 45500 to overcome the first stage of lockout.

FIG. 180 shows the staple cartridge 45300 described above. FIG. 181 shows a second staple cartridge 45900 comprising a cartridge body 45910 and a pan 45920 configured to hold a plurality of staples within the staple cartridge 45900. Cartridge body 45910 further includes a lockout key 45930 extending proximally from a proximal face 45913 of cartridge body 45910 . As can be seen in FIGS. 180 and 181, staple cartridge 45300 and second staple cartridge 45900 include similar features. However, they include lockout keys with different configurations. The lockout key 45330 of the staple cartridge 45300 has a first length 45338 and a first height 45339, while the lockout key 45930 of the second staple cartridge 45900 has a first length 45338 and a first height 45339. It has a second length 45938 and a second height 45939 each different from the one height 45339 . The staple cartridges 45300, 45900 are such that the staple cartridge 45300 can only unlock the first instrument, the second instrument cannot be unlocked, and the second staple cartridge 45900 unlocks the second instrument only. and the first instrument is part of a system that cannot be unlocked. The lockout key 45930 includes an angled surface 45931 and a flat surface 45932 having different dimensions than the surfaces 45331 , 45332 of the lockout key 45330 . Lockout key 45330 of staple cartridge 45300 is shown in phantom in FIG. 181 for comparison.

For example, different lockout key configurations between similar-looking cartridges can prevent a clinician from inserting and using an incompatible cartridge in a second instrument. In this example, the lockout keys 45330, 45930 cause the instrument's firing assembly to lift to different heights at different times during the firing assembly's firing stroke. Referring back to the floating pin 45600, when the second staple cartridge 45900 is installed within the surgical stapling assembly 45000, the firing assembly 45500 is positioned in the firing assembly 45500 when the staple cartridge 45300 is installed. is lifted by the floating pins 45600 to a lower height than the height lifted by the floating pins 45600. This prevents the firing assembly 45500 from landing on the sled platform of the second staple cartridge and instead locks it out. This prevents use of an inappropriate staple cartridge within the stapling instrument.

An instrument usable with the second staple cartridge 45900 can include a floating pin system similar to that described above. However, the floating pin is such that the lockout key 45930 lifts the instrument's firing member to the appropriate height at the appropriate time and lands on the thread of the second staple cartridge 45900 to avoid instrument lockout. can be positioned differently relative to the second staple cartridge 45900 to allow for In at least one example, the lockout keys described herein include, for example, cartridge body fins.

Various aspects of the subject matter described herein are illustrated in the following examples.

Example 1 - A surgical stapling assembly comprising a staple cartridge and a surgical instrument configured to receive the staple cartridge therein. The staple cartridge includes a lockout key, a cartridge body including a longitudinal slot, staples removably stored within the cartridge body, and a sled configured to eject the staples from the cartridge body during a staple firing stroke. and including. The surgical instrument includes a first jaw, a second jaw movable relative to the first jaw, and a firing member movable within a longitudinal slot to push the sled through the staple firing stroke. ,including. The firing member includes a lockout pin extending laterally therefrom. The surgical instrument further includes a first lockout and a second lockout. The first lockout includes a spring member and a locking opening defined within the spring member. The locking opening captures the lockout pin and holds the firing member in place when an inappropriate staple cartridge is placed in the surgical instrument in place of the staple cartridge so that the firing member is engaged with the staple. It is configured to prevent advancement over the firing stroke. The second lockout is configured to prevent the firing member from advancing through the staple firing stroke when a used staple cartridge is positioned within the surgical instrument. The lockout key disengages the locking opening from the lockout pin to allow the firing member to advance distally over the staple firing stroke when the staple cartridge is positioned within the surgical instrument. is configured to override the second lockout by setting

Example 2 - The surgical stapling assembly of Example 1, wherein the lockout key is located on only one side of the longitudinal slot.

[0036] Example 3 - The surgical stapling assembly of Example 1 or 2, wherein the lockout key extends proximally from the cartridge body.

Example 4 - The surgical procedure of Example 1, 2, or 3, wherein the staple cartridge further includes a pan configured to retain the staples within the cartridge body, the lockout key extending proximally from the pan. stapling assembly for .

Example 5 - The lockout key is a looped end and a slot defined in the looped end such that the looped end terminates in the slot to reinforce the lockout key. The surgical stapling assembly of Example 1, 2, 3, or 4, comprising:

Example 6 - The lockout pin comprises a first lockout pin, the first lockout pin disposed on the first side of the firing member and the firing member on the second side of the firing member a second lockout pin positioned at the second lockout pin, the spring member including a first spring member extending along the first side, the second lockout extending along the second side; a second spring member extending along the second lockout pin when an improper staple cartridge is placed in the surgical instrument in place of the staple cartridge; The surgical stapling assembly of example 1, 2, 3, 4, or 5, wherein the surgical stapling assembly is configured to releasably lock in place.

Example 7 - As in Example 1, 2, 3, 4, 5 or 6, wherein the first jaw includes a channel configured to receive a staple cartridge and the spring member is grounded within the channel A surgical stapling assembly as described.

Example 8 - The sled is configured to assist the lockout key to override the first lockout when the staple cartridge is positioned within the surgical instrument and the sled is in the unfired position The surgical stapling assembly of Example 1, 2, 3, 4, 5, 6, or 7, wherein the assembly comprises:

Example 9 - The spring member includes a first portion attached to the surgical instrument and a second portion pivotally attached to the first portion, the second portion being the lockout key 9. The surgical stapling assembly of example 1, 2, 3, 4, 5, 6, 7, or 8, wherein the surgical stapling assembly is configured to pivotally disengage from the lockout pin by.

Example 10 - The spring member comprises a metal bar that is pulled in tension to stop the firing member when the first lockout engages the firing member and the staple firing stroke is initiated. , 3, 4, 5, 6, 7, 8 or 9.

Example 11 - A surgical stapling assembly configured to receive a staple cartridge. The staple cartridge is configured with a lockout key, a cartridge body including a longitudinal slot, a plurality of staples removably stored within the cartridge body, and firing staples from the cartridge body during a staple firing stroke. including threads and; A surgical stapling assembly includes a first jaw, a second jaw movable relative to the first jaw, and a firing member movable within a longitudinal slot during a staple firing stroke. Prepare. The firing member is configured to push against the sled to fire the staples during the staple firing stroke. The firing member includes a pin extending therefrom. The surgical stapling assembly further comprises a first lockout and a second lockout. The first lockout is configured to prevent the firing member from advancing through the staple firing stroke when a used staple cartridge is installed within the surgical stapling assembly. The second lockout is configured to prevent the firing member from advancing through the staple firing stroke when the staple cartridge is not installed within the surgical stapling assembly. The second lockout includes a lockout arm and a locking opening defined in the lockout arm and configured to receive the pin. The lockout arm is configured to retain the pin to lock the firing member in place. The lockout key engages the lockout arm and disengages the lockout arm from the pin when the staple cartridge is installed within the surgical stapling assembly so that the firing member is farther through the staple firing stroke. It is configured to override the second lockout by allowing it to advance forward.

Example 12 - The pin comprises a first pin, the first pin disposed on a first side of the firing member, and the firing member a second side disposed on the second side of the firing member. The lockout arm includes a first lockout arm extending along the first side and a second lockout arm extending along the second side. further comprising two lockout arms, the second lockout arm configured to lock the second pin in place when the staple cartridge is not installed within the surgical stapling assembly; The surgical stapling assembly of Example 11.

Example 13 - The surgical stapling assembly of Example 11 or 12, wherein the first jaw includes a channel configured to receive a staple cartridge and the lockout arm is grounded within the channel .

Example 14 - A lockout arm includes a first portion and a second portion pivotally attached to the first portion, the second portion being pivoted by a lockout key to engage a pin. 14. The surgical stapling assembly of example 11, 12 or 13, configured to disengage from.

Example 15 - The lockout arm comprises a metal bar that is pulled in tension to stop the firing member when the second lockout engages the firing member and the staple firing stroke is initiated; 15. The surgical stapling assembly of 12, 13 or 14.

Example 16 - A surgical stapling assembly comprising a staple cartridge and a surgical instrument configured to receive the staple cartridge therein. The staple cartridge includes a lockout key, a cartridge body including a longitudinal slot, staples removably stored within the cartridge body, and a sled configured to eject the staples from the cartridge body during a staple firing stroke. and including. The surgical instrument includes a first jaw, a second jaw movable relative to the first jaw, a firing member, a first lockout, and a second lockout. . A firing member is movable within the longitudinal slot to push the sled through the staple firing stroke. The firing member includes a lockout pin extending laterally therefrom. The first lockout includes a spring member and a locking opening defined within the spring member. The locking opening captures the lockout pin and holds the firing member in place when the staple cartridge is not installed within the surgical instrument to prevent the firing member from advancing through the staple firing stroke. is configured as The second lockout is configured to prevent the firing member from advancing through the staple firing stroke when a used staple cartridge is positioned within the surgical instrument. The lockout key disengages the locking opening from the lockout pin when the staple cartridge is installed within the surgical instrument, allowing the firing member to advance distally over the staple firing stroke. to actively unlock the second lockout.

Example 17 - A surgical system comprising a first staple cartridge, a first stapling instrument, a second staple cartridge, and a second stapling instrument. The first staple cartridge includes a first cartridge body, staples removably stored in the first cartridge body, and a first lockout key. The first stapling instrument comprises a first staple firing drive comprising a first firing member. The first firing member is movable through a first staple firing stroke. The first stapling instrument prevents the first firing member from moving through the first staple firing stroke when the first staple cartridge is not installed within the first stapling instrument. Further including a configured first lockout. The first lockout key is configured to unlock the first lockout when the first staple cartridge is installed in the first stapling instrument, and the first firing member to the first lockout. Allow advancement for one staple firing stroke. The second staple cartridge includes a second cartridge body, staples removably stored in the second cartridge body, and a second lockout key. The second lockout key is different than the first lockout key. The second stapling instrument includes a second staple firing drive including a second firing member. The second firing member is movable through a second staple firing stroke. The second stapling instrument prevents the second firing member from moving through the second staple firing stroke when the second staple cartridge is not installed within the second stapling instrument. Further including a configured second lockout. The second lockout key is configured to unlock the second lockout when the second staple cartridge is installed in the second stapling instrument, and the second firing member to the second lockout. Allow advancement for 2 staple firing strokes. Loading the first staple cartridge within the second stapling instrument does not unlock the second lockout and loading the second staple cartridge within the first stapling instrument does not unlock the second lockout. Do not unlock 1 lockout.

Example 18 - The first firing member and the second firing member each include a left side and a right side, and the first lockout extends along the left side but extends along the right side 18. The surgical system of Example 17, wherein no, and the second lockout extends along the right side but does not extend along the left side.

Example 19 - The first stapling instrument includes a first frame, the first lockout includes a first cantilever locking arm attached to the first frame, and the second stapling instrument includes a first 19. The surgical system of Example 17 or 18, comprising two frames, the second lockout comprising a second cantilever locking arm attached to the second frame.

Example 20 - A stapling cartridge system comprising a first staple cartridge and a second staple cartridge. The first staple cartridge is configured to apply a row of staples within patient tissue having a staple length. The first staple cartridge is configured for use with a first stapling instrument having a first staple firing lockout. The first staple cartridge unlocks the first staple firing lockout when the first staple cartridge is installed within the first stapling instrument. The second staple cartridge is configured to apply a row of staples within patient tissue having a staple length. The second staple cartridge is configured for use with a second stapling instrument having a second staple firing lockout. The second staple cartridge unlocks the second staple firing lockout when the second staple cartridge is installed within the second stapling instrument. The first staple cartridge is mountable within the second stapling instrument. The first staple cartridge does not unlock the second staple firing lockout when the first staple cartridge is installed within the second stapling instrument. A second staple cartridge is mountable within the first stapling instrument. The second staple cartridge does not unlock the first staple firing lockout when the second staple cartridge is installed within the first stapling instrument.

Example 21 - A first staple cartridge includes a first cartridge body having a color, a second staple cartridge includes a second cartridge body having the color, the first staple cartridge is unfired 21. The system of Example 20, comprising staples having a height, the second staple cartridge comprising staples having the unfired height.

Example 22 - A stapling system comprising a staple cartridge and a stapling instrument. The staple cartridge includes a cartridge body, staples removably stored within the cartridge body, a sled movable over a staple firing stroke to fire the staples, and a lockout key. The stapling instrument includes a frame, a firing member and a lockout. The firing assembly is configured to push the sled during the staple firing stroke. The firing member includes a pin extending therefrom. The lockout includes a first end attached to the frame and a second end configured to releasably retain the pin. The lockout is configured to prevent the firing member from executing a staple firing stroke when the staple cartridge is not installed within the stapling instrument. The firing member tensions the lockout when the lockout is engaged with the pin to initiate a staple firing stroke. The lockout key contacts and deactivates the lockout when the staple cartridge is installed in the stapling instrument.

Example 23 - A staple cartridge comprising a cartridge body, staples stored within the cartridge body, and a sled configured to eject the staples from the cartridge body during a staple firing stroke. The cartridge body includes a longitudinal slot, a first side and a second side. The first side and the second side are defined by longitudinal slots. The staple cartridge further comprises a lockout key that extends proximally from the staple cartridge only on one of the first side and the second side of the cartridge body. The lockout key is configured to override the first lockout of the first stapling instrument, but not the second lockout of the second stapling instrument.

[00323] Example 24 - The staple cartridge of example 23, wherein the lockout key extends proximally from the cartridge body.

[00333] Example 25 - The staple cartridge of example 23 or 24, wherein the staple cartridge further comprises a pan configured to retain the staples within the cartridge body, the lockout key extending proximally from the pan.

Example 26 - The staple cartridge of example 23, 24 or 25, wherein the lockout key extends proximally from the sled.

Example 27 - A first stapling instrument includes a first staple firing drive, and a first lockout activates the first staple when a staple cartridge is not installed within the first stapling instrument. The second lockout prevents the firing drive from executing the staple firing stroke, the second stapling instrument includes the second staple firing drive, and the second lockout prevents the staple cartridge from being within the second stapling instrument. 27. The staple cartridge of embodiment 23, 24, 25, or 26, which prevents the second staple firing drive from executing a staple firing stroke even when attached.

Example 28 - A staple cartridge comprising a cartridge body, staples stored within the cartridge body, and a sled configured to eject the staples from the cartridge body during a staple firing stroke. The cartridge body includes a longitudinal slot, a first side and a second side. The first side and the second side are defined by longitudinal slots. The staple cartridge further includes a lockout key extending proximally from the staple cartridge. The lockout key is asymmetric with respect to the longitudinal slot in the cartridge body. The lockout key is configured to override the first lockout of the first stapling instrument, but not the second lockout of the second stapling instrument.

Example 29—The staple cartridge of example 28, wherein the lockout key extends proximally from the cartridge body.

Example 30 - The staple cartridge of example 28 or 29, wherein the staple cartridge further comprises a pan configured to retain the staples within the cartridge body, the lockout key extending proximally from the pan .

Example 31 - The staple cartridge of example 28, 29 or 30, wherein the lockout key extends proximally from the sled.

Example 32 - A first stapling instrument includes a first staple firing drive, and a first lockout activates the first staple when a staple cartridge is not installed within the first stapling instrument. The second lockout prevents the firing drive from executing the staple firing stroke, the second stapling instrument includes the second staple firing drive, and the second lockout prevents the staple cartridge from being within the second stapling instrument. 32. The staple cartridge of embodiment 28, 29, 30, or 31, which prevents the second staple firing drive from executing a staple firing stroke even when attached.

Many of the surgical instrument systems described herein are powered by electric motors. The surgical instrument systems described herein can operate in any suitable manner. In various instances, the surgical instrument systems described herein can be operated by, for example, manually operated triggers. In certain examples, the motors disclosed herein can comprise one or more portions of a robotic controlled system. Additionally, any of the end effectors and/or tool assemblies disclosed herein can be utilized with robotic surgical instrument systems. For example, U.S. patent application Ser. No. 13/118,241, entitled "SURGICAL STAPLING INSTRUMENTS WITH ROTATABLE STABLE DEPLOYMENT ARRANGEMENTS," now U.S. Pat. No. 9,072,535, provides several examples of robotic surgical instrument systems. disclosed in more detail.

The surgical instrument systems described herein have been described in relation to staple deployment and deformation. However, the embodiments described herein are not so limited. Various embodiments are envisioned that deploy fastening elements other than staples, such as, for example, clamps or tacks. Further, various embodiments are envisioned utilizing any suitable means for sealing tissue. For example, an end effector according to various embodiments may include electrodes configured to heat and seal tissue. Also for example, an end effector according to certain embodiments can apply vibrational energy to seal tissue.

The entire contents of the following disclosures are incorporated herein by reference.
- U.S. Patent No. 5,403,312, entitled "ELECTROSURGICAL HEMOSTATIC DEVICE", issued Apr. 4, 1995;
- U.S. Patent No. 7,000,818, entitled "SURGICAL STAPLING INSTRUMENT HAVING SEPARATE DISTINCT CLOSING AND FIRRING SYSTEMS", issued February 21, 2006;
- U.S. Patent No. 7,422,139, entitled "MOTOR-DRIVEN SURGICAL CUTTING AND FASTENING INSTRUMENT WITH TACTILE POSITION FEEDBACK", issued September 9, 2008;
- U.S. Patent No. 7,464,849, entitled "ELECTRO-MECHANICAL SURGICAL INSTRUMENTS WITH CLOSURE SYSTEM AND ANVIL ALIGNMENT COMPONENTS", issued Dec. 16, 2008;
- U.S. Patent No. 7,670,334, entitled "SURGICAL INSTRUMENT HAVING AN ARTICULATING END EFFECTOR", issued March 2, 2010;
- U.S. Patent No. 7,753,245, entitled "SURGICAL STAPLING INSTRUMENTS", issued July 13, 2010;
- U.S. Patent No. 8,393,514, entitled "SELECTIVELY ORIENTABLE IMPLANTABLE FASTENER CARTRIDGE", issued March 12, 2013,
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- US patent application Ser. No. 12/235,782 entitled "MOTOR-DRIVEN SURGICAL CUTTING INSTRUMENT" now US Pat.
- US patent application Ser. No. 12/235,972, entitled "MOTORIZED SURGICAL INSTRUMENT", now US Pat.
- U.S. patent application Ser.
- US patent application Ser. issue,
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. patent application Ser.
- U.S. Patent Application No. 13/800,025, filed March 13, 2013, entitled "STAPLE CARTRIDGE TISSUE THICKNESS SENSOR SYSTEM", now U.S. Patent No. 9,345,481;
U.S. patent application Ser.
- US Patent Application Publication No. 2007/0175955, entitled "SURGICAL CUTTING AND FASTENING INSTRUMENT WITH CLOSURE TRIGGER LOCKING MECHANISM", filed on January 31, 2006; Title: "SURGICAL STAPLING INSTRUMENT WITH AN ARTICULATABLE END EFFECTOR", filed on April 22, 2010, now U.S. Patent No. 8,308,040.

Although various devices have been described herein in conjunction with specific embodiments, modifications and changes may be made to those embodiments. Certain features, structures or characteristics may be combined in any suitable manner in one or more embodiments. Thus, any particular feature, structure, or characteristic illustrated or described with respect to one embodiment may be combined, without limitation, in whole or in part, with features, structures, or characteristics of one or more other embodiments. good. Also, although materials are disclosed for particular components, other materials may be used. Further, according to various embodiments, single components may be replaced with multiple components, and multiple components may be replaced with a single component to perform a given function(s). may be replaced. The foregoing description and the following claims are intended to cover all such modifications and variations.

The devices disclosed herein can be designed to be discarded after a single use, or can be designed to be used multiple times. In either case, however, the device can be reconditioned for reuse after at least one use. Reconditioning can include, but is not limited to, any combination of disassembly of the device, followed by cleaning or replacement of particular parts of the device, and subsequent reassembly of the device. Specifically, a reconditioning facility and/or surgical team can disassemble the device, clean and/or replace certain parts of the device, and then reassemble the device for subsequent use. can be done. Those skilled in the art will appreciate that reconditioning of the device can utilize a variety of techniques for disassembly, cleaning/replacement, and reassembly. Use of such techniques, and the resulting reconditioned device, are all within the scope of the present application.

The devices disclosed herein can be processed pre-operatively. Initially, a new or used instrument may be obtained and cleaned as necessary. The instruments can then be sterilized. In one sterilization technique, the instrument is placed in a closed and sealed container, such as a plastic bag or TYVEK bag. The container and instrument can then be placed in a radiation field that can penetrate the container, such as gamma rays, X-rays, and/or high-energy electrons. Radiation can kill bacteria on the device and in the container. After this, the sterilized instrument can be stored in the sterile container. The sealed container can keep the instrument sterile until it is opened in the medical facility. The device may also be sterilized using any other technique known in the art including, but not limited to, beta radiation, gamma radiation, ethylene oxide, hydrogen peroxide plasma, and/or water vapor.

While this invention has been described as having an exemplary design, the present invention may be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles.

[Mode of implementation]
(1) A surgical stapling assembly comprising:
A staple cartridge,
a lockout key;
a cartridge body including a longitudinal slot;
staples removably stored within the cartridge body;
a sled configured to eject the staples from the cartridge body during a staple firing stroke;
a staple cartridge comprising
A surgical instrument configured to receive the staple cartridge therein, comprising:
a first jaw;
a second jaw movable relative to the first jaw;
a firing member movable within the longitudinal slot to push the sled through the staple firing stroke, the firing member comprising a lockout pin extending laterally from the firing member;
A first lockout including a spring member and a locking opening defined in said spring member, said locking opening being adapted to replace said staple cartridge with an inappropriate staple cartridge for said surgical application. configured to capture the lockout pin and hold the firing member in place when positioned within the instrument to prevent the firing member from advancing through the staple firing stroke; a first lockout;
a second lockout configured to prevent the firing member from advancing through the staple firing stroke when a used staple cartridge is positioned within the surgical instrument, the lockout comprising: A key disengages the locking opening from the lockout pin to advance the firing member distally over the staple firing stroke when the staple cartridge is positioned within the surgical instrument. a second lockout configured to override the second lockout by allowing the
a surgical instrument comprising
a surgical stapling assembly.
Clause 2. The surgical stapling assembly of clause 1, wherein said lockout key is located only on one side of said longitudinal slot.
Clause 3. The surgical stapling assembly of clause 1, wherein the lockout key extends proximally from the cartridge body.
Clause 4. The surgical procedure of clause 1, wherein the staple cartridge further includes a pan configured to retain the staples within the cartridge body, and wherein the lockout key extends proximally from the pan. stapling assembly for .
(5) the lockout key
a looped end;
a slot defined in said looped end such that said looped end terminates in said slot to reinforce said lockout key;
5. The surgical stapling assembly of embodiment 4, comprising:

(6) said lockout pin comprises a first lockout pin, said first lockout pin disposed on a first side of said firing member, said firing member extending from said second side of said firing member; a second lockout pin disposed on a side of the second lockout, wherein the spring member includes a first spring member extending along the first side; , a second spring member extending along the second side, the second spring member being adapted to prevent an improper staple cartridge from being positioned within the surgical instrument in place of the staple cartridge; Clause 2. The surgical stapling assembly of clause 1, configured to releasably lock the second lockout pin in place when the surgical stapling assembly is in place.
Clause 7. The surgical stapling assembly of clause 1, wherein the first jaw includes a channel configured to receive the staple cartridge, and wherein the spring member is grounded within the channel. .
(8) the sled assists the lockout key to override the first lockout when the staple cartridge is positioned within the surgical instrument and the sled is in an unfired position; 2. The surgical stapling assembly of embodiment 1, wherein the surgical stapling assembly is configured to.
(9) the spring member includes a first portion attached to the surgical instrument and a second portion pivotally attached to the first portion, the second portion comprising: Clause 2. The surgical stapling assembly of clause 1, wherein the surgical stapling assembly is configured to be pivotally disengaged from the lockout pin by the lockout key.
(10) wherein the spring member comprises a metal bar pulled in tension to stop the firing member when the first lockout engages the firing member and the staple firing stroke is initiated; The surgical stapling assembly of aspect 1.

(11) A surgical stapling assembly configured to receive a staple cartridge, the staple cartridge including a lockout key, a cartridge body including a longitudinal slot, and removably stored within the cartridge body. and a sled configured to fire the staples from the cartridge body during a staple firing stroke, the surgical stapling assembly comprising:
a first jaw;
a second jaw movable relative to the first jaw;
a firing member movable within the longitudinal slot during the staple firing stroke, the firing member configured to push the sled to fire the staples during the staple firing stroke; a firing member, the member including a pin extending from the firing member;
a first lockout configured to prevent the firing member from advancing through the staple firing stroke when a used staple cartridge is installed within the surgical stapling assembly;
a second lockout configured to prevent advancement of the firing member through the staple firing stroke when the staple cartridge is not installed within the surgical stapling assembly; 2 lockout includes a lockout arm and a locking opening defined in said lockout arm and configured to receive said pin, said lockout arm retaining said pin. a lockout key configured to lock the firing member in place, the lockout key engaging the lockout arm when the staple cartridge is installed within the surgical stapling assembly; configured to override the second lockout by disengaging the lockout arm from the pin to allow the firing member to advance distally over the staple firing stroke; a second lockout, and
a surgical stapling assembly.
(12) said pins include a first pin, said first pin disposed on a first side of said firing member and said firing member disposed on a second side of said firing member; a second pin extending along the first side, the lockout arm including a first lockout arm extending along the first side, the second lockout extending along the second side; a second lockout arm extending along a side, said second lockout arm locking said second pin when said staple cartridge is not installed in said surgical stapling assembly; 12. The surgical stapling assembly according to embodiment 11, wherein the surgical stapling assembly is configured to lock in place.
Clause 13. The surgical stapling of clause 11, wherein the first jaw includes a channel configured to receive the staple cartridge, and the lockout arm is grounded within the channel. assembly.
(14) The lockout arm includes a first portion and a second portion pivotally attached to the first portion, the second portion being pivoted by the lockout key. Clause 12. The surgical stapling assembly according to clause 11, wherein the surgical stapling assembly is configured to disengage from the pin as a
(15) the lockout arm includes a metal bar pulled in tension to stop the firing member when the second lockout engages the firing member and the staple firing stroke is initiated; The surgical stapling assembly according to embodiment 11.

(16) A surgical stapling assembly comprising:
A staple cartridge,
a lockout key;
a cartridge body including a longitudinal slot;
staples removably stored within the cartridge body;
a sled configured to eject the staples from the cartridge body during a staple firing stroke;
a staple cartridge comprising
A surgical instrument configured to receive the staple cartridge therein, comprising:
a first jaw;
a second jaw movable relative to the first jaw;
a firing member movable within the longitudinal slot to push the sled through the staple firing stroke, the firing member comprising a lockout pin extending laterally from the firing member;
A first lockout including a spring member and a locking opening defined in said spring member, said locking opening being closed when said staple cartridge is not installed in said surgical instrument. a first lockout configured to capture the lockout pin and hold the firing member in place to prevent the firing member from advancing through the staple firing stroke;
a second lockout configured to prevent the firing member from advancing through the staple firing stroke when a used staple cartridge is positioned within the surgical instrument, the lockout comprising: A key disengages the locking opening from the lockout pin to advance the firing member distally over the staple firing stroke when the staple cartridge is installed in the surgical instrument. a second lockout configured to actively unlock the second lockout by allowing the
a surgical instrument comprising
a surgical stapling assembly.
(17) A surgical system comprising:
A first staple cartridge comprising:
a first cartridge body;
staples removably stored in the first cartridge body;
a first lockout key;
a first staple cartridge comprising
A first stapling instrument comprising:
a first staple firing drive including a first staple firing member, wherein said first firing member is movable over a first staple firing stroke;
a first staple cartridge configured to prevent the first firing member from moving through the first staple firing stroke when the first staple cartridge is not installed in the first stapling instrument; 1 lockout, wherein the first lockout key unlocks the first lockout when the first staple cartridge is installed in the first stapling instrument. a first lockout configured to enable advancement of the first firing member over the first staple firing stroke;
a first stapling instrument comprising
A second staple cartridge comprising:
a second cartridge body;
staples removably stored in the second cartridge body;
a second lockout key different from the first lockout key;
a second staple cartridge comprising
A second stapling instrument, comprising:
a second staple firing drive including a second staple firing member, wherein the second staple firing member is movable over a second staple firing stroke;
a second staple cartridge configured to prevent the second firing member from moving through the second staple firing stroke when the second staple cartridge is not installed in the second stapling instrument; 2 lockout, wherein the second lockout key unlocks the second lockout when the second staple cartridge is installed in the second stapling instrument. a second lockout configured to enable advancement of the second firing member over the second staple firing stroke;
a second stapling instrument comprising
with
Mounting the first staple cartridge within the second stapling instrument does not unlock the second lockout and mounts the second staple cartridge within the first stapling instrument. causing does not unlock the first lockout;
surgical system.
(18) said first firing member and said second firing member each include a left side and a right side, said first lockout extending along said left side but extending along said right side; 18. The surgical system of embodiment 17, wherein the second lockout extends along the right side but does not extend along the left side.
(19) said first stapling instrument includes a first frame; said first lockout includes a first cantilever locking arm attached to said first frame; and said second stapling instrument; Clause 19. The surgical system of clause 18, wherein the instrument includes a second frame, and wherein the second lockout includes a second cantilever locking arm attached to the second frame.
(20) A system of stapling cartridges comprising:
A first staple cartridge configured to apply a row of staples in patient tissue having a staple length, said first staple cartridge having a first staple firing lockout. configured for use with a fastening instrument, wherein the first staple cartridge activates the first staple firing lockout when the first staple cartridge is installed within the first staple fastening instrument; a first staple cartridge that unlocks;
a second staple cartridge configured to apply a row of staples in patient tissue having the staple length, the second staple cartridge having a second staple firing lockout; Configured for use with a stapling instrument, the second staple cartridge engages the second staple firing lockout when the second staple cartridge is installed within the second stapling instrument. a second staple cartridge that unlocks the
with
The first staple cartridge is mountable within the second stapling instrument, and the first staple cartridge is mounted within the second stapling instrument when the first staple cartridge is mounted within the second stapling instrument. does not unlock said second staple firing lockout, said second staple cartridge is mountable within said first stapling instrument, and said second staple cartridge comprises: said second staple cartridge; not unlocking the first staple firing lockout when is installed in the first stapling instrument;
System of stapling cartridges.

(21) The first staple cartridge includes a first cartridge body having a color, the second staple cartridge includes a second cartridge body having the color, and the first staple cartridge comprises: 21. The system of embodiment 20, comprising staples having an unfired height, wherein the second staple cartridge comprises staples having the unfired height.
(22) A stapling system comprising:
A staple cartridge,
the cartridge body,
staples removably stored within the cartridge body;
a sled movable over a staple firing stroke to fire the staples;
a lockout key;
a staple cartridge comprising
A stapling instrument comprising:
a frame;
a firing member configured to push the sled during the staple firing stroke, the firing member including a pin extending from the firing member;
a lockout including a first end attached to the frame and a second end configured to releasably retain the pin, wherein the lockout is configured to allow the staple cartridge to When not mounted within the stapling instrument, the firing member is configured to prevent the firing member from executing the staple firing stroke, the firing member having the lockout engaged with the pin. When the staple firing stroke is initiated, the lockout is tensioned and the lockout key contacts the lockout and locks the lock when the staple cartridge is installed in the stapling instrument. a lockout that deactivates an out;
a stapling instrument comprising;
A stapling system comprising:
(23) A staple cartridge comprising:
a cartridge body,
a longitudinal slot;
a first side;
a second side, wherein the first side and the second side are defined by the longitudinal slot;
a cartridge body comprising
staples stored in the cartridge body;
a sled configured to eject the staples from the cartridge body during a staple firing stroke;
A lockout key extending proximally from the staple cartridge only on one of the first side and the second side of the cartridge body, the first lock of a first stapling instrument a lockout key configured to override the out but not the second lockout of the second stapling instrument;
a staple cartridge.
(24) The staple cartridge of paragraph 23, wherein the lockout key extends proximally from the cartridge body.
Clause 25. The staple of clause 23, wherein the staple cartridge further includes a pan configured to retain the staples within the cartridge body, the lockout key extending proximally from the pan. cartridge.

(26) The staple cartridge of paragraph 23, wherein the lockout key extends proximally from the sled.
(27) the first stapling instrument includes a first staple firing drive, and the first lockout is configured to operate when the staple cartridge is not installed within the first stapling instrument; The second lockout prevents the first staple firing drive from executing a staple firing stroke, the second stapling instrument includes a second staple firing drive, and the second lockout prevents the staple cartridge from performing the staple firing stroke. 24. The staple cartridge of embodiment 23, wherein the second staple firing drive is prevented from executing a staple firing stroke even when mounted within a second stapling instrument.
(28) A staple cartridge comprising:
a cartridge body,
a longitudinal slot;
a first side;
a second side, wherein the first side and the second side are defined by the longitudinal slot;
a cartridge body comprising
staples stored in the cartridge body;
a sled configured to eject the staples from the cartridge body during a staple firing stroke;
a lockout key extending proximally from the staple cartridge, the lockout key being asymmetrical with respect to the longitudinal slot of the cartridge body, the lockout key being a first stapling instrument; a lockout key configured to override the first lockout of the but not the second lockout of the second stapling instrument;
a staple cartridge.
(29) The staple cartridge of paragraph 28, wherein the lockout key extends proximally from the cartridge body.
30. The staple of claim 28, wherein the staple cartridge further comprises a pan configured to retain the staples within the cartridge body, the lockout key extending proximally from the pan. cartridge.

(31) The staple cartridge of paragraph 28, wherein the lockout key extends proximally from the sled.
(32) the first stapling instrument includes a first staple firing drive, and the first lockout is configured to operate when the staple cartridge is not installed within the first stapling instrument; The second lockout prevents the first staple firing drive from executing a staple firing stroke, the second stapling instrument includes a second staple firing drive, and the second lockout prevents the staple cartridge from performing the staple firing stroke. 29. The staple cartridge of embodiment 28, wherein the second staple firing drive is prevented from executing a staple firing stroke even when mounted within a second stapling instrument.

Claims (11)

A surgical stapling assembly comprising:
A staple cartridge,
a lockout protrusion;
a cartridge body including a longitudinal slot;
staples removably stored within the cartridge body;
a sled configured to eject the staples from the cartridge body during a staple firing stroke;
a staple cartridge comprising
A surgical instrument configured to receive the staple cartridge therein, comprising:
a first jaw;
a second jaw movable relative to the first jaw;
a firing member movable within the longitudinal slot to push the sled through the staple firing stroke, the firing member comprising a lockout pin extending laterally from the firing member;
a first lockout including a spring member and a locking opening defined in the spring member;
a surgical instrument comprising
with
When the staple cartridge is not positioned within the surgical instrument, the lockout pin is received within the locking opening such that the locking opening captures the lockout pin and the firing member is positioned within the surgical instrument. A surgical stapling assembly prevented from advancement over a staple firing stroke. The lockout projection deflects the spring member to disengage the locking aperture from the lockout pin and the firing when the staple cartridge is positioned within the surgical instrument. The surgical stapling assembly according to any one of the preceding claims, wherein the member permits distal advancement over the staple firing stroke. If the staple cartridge is replaced in the surgical instrument by an inappropriate staple cartridge that does not include a lockout projection of the same shape as the lockout projection, the locking opening may become the lockout pin. The surgical stapling assembly according to claim 1, wherein the firing member is prevented from advancing through the staple firing stroke. The staple cartridge includes a second lockout projection, the firing member includes a second lockout pin, the surgical instrument includes a second spring member and defined within the second spring member. a second lockout including a second locking opening formed in the
When the staple cartridge is not positioned within the surgical instrument, the second lockout pin is received within the second locking opening such that the second locking opening is aligned with the second locking opening. capturing a lockout pin and preventing the firing member from advancing through the staple firing stroke;
The second lockout projection deflects the second spring member to move the second lockout pin from the second lockout pin when the staple cartridge is positioned within the surgical instrument. The surgical stapling assembly according to claim 2, wherein the stop opening is disengaged to allow the firing member to advance distally over the staple firing stroke. The sled includes a second lockout projection, the firing member includes a second lockout pin, the surgical instrument includes a second spring member and a second spring member defined within the second spring member. a second lockout including a second locking opening;
When the staple cartridge is not positioned within the surgical instrument, the second lockout pin is received within the second locking opening such that the second locking opening is aligned with the second locking opening. capturing a lockout pin to prevent the firing member from advancing through the staple firing stroke;
The second lockout projection extends from the second lockout pin to the second locking aperture when a used staple cartridge with a sled in the fired position is positioned within the surgical instrument. preventing the firing member from advancing through the staple firing stroke without disengaging the portion;
The second lockout projection causes the second spring member to flex and the second lockout projection when an unused staple cartridge with a sled in an unfired position is positioned within the surgical instrument. The surgical stapling assembly of claim 2, disengaging the second locking opening from a lockout pin to allow the firing member to advance distally over the staple firing stroke. . The surgical stapling assembly according to claim 1, wherein the lockout projection extends proximally from the cartridge body. The surgical stapling of claim 1, wherein the staple cartridge further includes a pan configured to retain the staples within the cartridge body, the lockout projection extending proximally from the pan. assembly. The lockout projection is
a looped end;
a slot defined in said looped end such that said looped end terminates in said slot to reinforce said lockout projection;
The surgical stapling assembly of claim 7, comprising: The surgical stapling assembly according to claim 1, wherein the first jaw includes a channel configured to receive the staple cartridge, and wherein the spring member is grounded within the channel. The spring member includes a first portion attached to the surgical instrument and a second portion pivotally attached to the first portion, wherein the second portion includes the lockout. The surgical stapling assembly according to claim 1, configured to be pivoted out of engagement with the lockout pin by a projection. 2. The spring member of claim 1, wherein the spring member comprises a metal bar pulled in tension to stop the firing member when the first lockout engages the firing member and the staple firing stroke is initiated. A surgical stapling assembly as described.

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