WO2022006795A1 - Ensemble poignée motorisée pour dispositifs médicaux - Google Patents

Ensemble poignée motorisée pour dispositifs médicaux Download PDF

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Publication number
WO2022006795A1
WO2022006795A1 PCT/CN2020/100951 CN2020100951W WO2022006795A1 WO 2022006795 A1 WO2022006795 A1 WO 2022006795A1 CN 2020100951 W CN2020100951 W CN 2020100951W WO 2022006795 A1 WO2022006795 A1 WO 2022006795A1
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WO
WIPO (PCT)
Prior art keywords
articulation
clutch
assembly
gear
housing
Prior art date
Application number
PCT/CN2020/100951
Other languages
English (en)
Inventor
Zhihua Zhang
Original Assignee
Covidien Lp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Covidien Lp filed Critical Covidien Lp
Priority to PCT/CN2020/100951 priority Critical patent/WO2022006795A1/fr
Priority to US18/015,250 priority patent/US20230263522A1/en
Priority to EP20944595.6A priority patent/EP4178455A4/fr
Priority to JP2023501083A priority patent/JP2023533288A/ja
Priority to PCT/CN2020/138521 priority patent/WO2022007344A1/fr
Priority to CN202121529030.3U priority patent/CN217040204U/zh
Priority to CN202110759594.4A priority patent/CN113907822A/zh
Publication of WO2022006795A1 publication Critical patent/WO2022006795A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
    • A61B2017/00398—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like using powered actuators, e.g. stepper motors, solenoids

Definitions

  • This technology is generally related to handle assemblies for surgical devices and, more particularly, to a handle assembly for powered surgical stapling device.
  • Surgical devices are commonly used during surgical procedures to perform a variety of different surgical operations including stapling, grasping, cutting, and sealing tissue to name a few.
  • a surgical device includes a handle assembly that a clinician, e.g., a surgeon, grasps to actuate the surgical device.
  • a clinician e.g., a surgeon
  • Certain types of surgical devices perform multiple tasks and have different capabilities to allow the device to more easily access tissue within a body cavity.
  • powered surgical stapling devices include actuation buttons for approximating jaws of a tool assembly of the stapling device, for applying staples to tissue, and for cutting tissue.
  • These stapling devices can also include knobs to facilitate articulation and/or rotation of the tool assembly in relation to the handle assembly.
  • Endoscopic surgical devices are used during minimally invasive surgical procedures to minimize trauma inflicted on the patient during the surgical procedure.
  • endoscopic surgical devices include a handle assembly, an elongate body, and a tool assembly that is supported on a distal portion of the elongate body.
  • the tool assembly can be pivotably mounted to the elongate body and movable between a non-articulated position in which the tool assembly is aligned with the elongate body to articulated positions in which the tool assembly defines an acute angle with the elongate body.
  • the handle assembly In order to pivot the tool assembly between the articulated and non-articulated positions, the handle assembly includes an articulation mechanism that is coupled to an articulation link positioned within the elongate body.
  • the articulation link is movable longitudinally within the elongate body in response to actuation of the articulation mechanism to pivot the tool assembly within the body cavity.
  • this disclosure relates generally to a handle assembly for a surgical device including a housing, a drive assembly, an articulation mechanism, a clutch, and a motor.
  • the housing supports a clutch switch.
  • the drive assembly is supported within the housing and includes a drive screw, a screw nut, and a drive rod.
  • the drive rod has a proximal portion and a distal portion.
  • the screw nut defines a threaded bore and includes external splines, and the drive screw extends through the threaded bore.
  • the drive rod has a proximal portion coupled to the drive screw and a distal portion.
  • the articulation mechanism is supported within the housing and includes a first articulation gear, a second articulation gear, and an articulation screw.
  • the first articulation gear includes outer teeth and defines a through bore that includes splines positioned within the through bore.
  • the second articulation gear defines a threaded bore and includes outer gear teeth that are engaged with the outer gear teeth of the first articulation gear.
  • the clutch is supported within the housing between the first articulation gear and the screw nut and is movable between a clamp/fire position in which the clutch is engaged with the external splines of the screw nut and an articulation position in which the clutch is engaged with the splines of the first articulation gear.
  • the motor coupled to the clutch, the motor operable to rotate the clutch within the housing.
  • the handle assembly includes a housing, a drive assembly, an articulation assembly, a clutch, and a motor.
  • the housing supports a clutch switch.
  • the drive assembly is supported within the housing and includes a drive screw, a screw nut, and a drive rod.
  • the drive rod has a proximal portion and a distal portion.
  • the screw nut defines a threaded bore and includes external splines, and the drive screw extends through the threaded bore.
  • the drive rod has a proximal portion that is coupled to the drive screw.
  • the articulation mechanism is supported within the housing and includes a first articulation gear, a second articulation gear, and an articulation screw.
  • the first articulation gear includes outer gear teeth and defines a through bore that includes splines that are positioned within the through bore of the first articulation gear.
  • the second articulation gear defines a threaded bore and includes outer gear teeth that are engaged with the outer gear teeth of the first articulation gear.
  • the clutch is supported within the housing between the first articulation gear and the screw nut and is movable between a clamp/fire position in which the clutch is engaged with the external splines of the screw nut and an articulation position in which the clutch is engaged with the splines of the first articulation gear.
  • the motor is coupled to the clutch and is operable to rotate the clutch within the housing.
  • the adapter assembly defines a longitudinal axis, has a proximal portion and a distal portion, and includes an articulation rod.
  • the proximal portion of the adapter assembly is coupled to the handle assembly.
  • the articulation rod has a proximal portion that is coupled to the articulation screw and a distal portion.
  • the drive rod extends through the adapter assembly.
  • the tool assembly is pivotably coupled to the distal portion of the adapter assembly about an axis that is transverse to the longitudinal axis of the adapter assembly.
  • the distal portion of the articulation rod is coupled to the tool assembly such that longitudinal movement of the articulation screw pivots the tool assembly between a non-articulated position in which the tool assembly is aligned with the longitudinal axis and articulated positions in which the tool assembly is misaligned with the longitudinal axis.
  • a first bevel gear is coupled to the motor and a second bevel gear coupled to the first bevel gear.
  • the second bevel gear defines a through bore and a longitudinal slot that communicates with the through bore.
  • the through bore of the second bevel gear receives the screw nut and the drive screw
  • the clutch includes a raised extension that is received within the longitudinal slot to rotatably couple the clutch to the second bevel gear.
  • the articulation mechanism includes an articulation link that is coupled to the articulation screw such that longitudinal movement of the articulation screw causes longitudinal movement of the articulation link.
  • a clutch switch is supported on the housing and is coupled to the clutch and movable along the housing to move the clutch between the articulation position and the clamp/fire position.
  • the clutch switch is coupled to the clutch by a forked member that includes spaced tines.
  • the clutch defines an annular channel and the tines of the forked member are received in the annular channel.
  • an actuation button is supported on the housing, a printed circuit board is supported within the housing, and the actuation button is coupled to the motor via the printed circuit board.
  • a battery is supported within the housing.
  • a manual retraction mechanism is secured to the drive screw and is rotatable to rotate the drive screw.
  • the manual retraction mechanism includes a tubular body portion that receives the drive screw and a handle that is coupled to the tubular body portion and extends from a proximal portion of the housing.
  • the housing includes a proximal cover portion that encloses the handle of the manual retraction mechanism.
  • the tool assembly includes a stapling device having an anvil assembly and a cartridge assembly, and the anvil assembly is coupled to the cartridge assembly such that the tool assembly is movable between an open position and a clamped position.
  • FIG. 1 is a side perspective view from a distal end of the disclosed powered surgical device with a tool assembly in a non-articulated position;
  • FIG. 2 is a side perspective view of a handle assembly of the surgical device shown in FIG. 1 with a housing half-section removed and a clutch in an articulation position;
  • FIG. 3 is a side perspective view of the handle assembly shown in FIG. 2 with the other housing half-section removed and the clutch in the articulation position;
  • FIG. 4 is a side perspective view of the handle assembly shown in FIG. 2 with the housing half-section removed and the clutch in the articulation position;
  • FIG. 5 is a side perspective, exploded view of the handle assembly shown in FIG. 2;
  • FIG. 6 is an enlarged view of the indicated area of detail shown in FIG. 5;
  • FIG. 7 is a cross-sectional view taken along section line 7-7 of FIG. 1;
  • FIG. 8 is a cross-sectional view taken along section line 8-8 of FIG. 7;
  • FIG. 9 is a cross-sectional view of the handle assembly with the clutch in the articulation position as the articulation mechanism is actuated;
  • FIG. 10 is a side perspective view of the articulation mechanism and clutch of the handle assembly of the surgical device shown in FIG. 1 with the clutch in the articulation position;
  • FIG. 11 is a side perspective view of a bevel gear and clutch of the handle assembly shown in FIG. 10 with the parts separated;
  • FIG. 12 is a side perspective view of the bevel gear and clutch shown in FIG. 11 with the parts assembled;
  • FIG. 13 is a side perspective view of an articulation gear and the clutch of the handle assembly shown in FIG. 10 with the parts separated;
  • FIG. 14 is a side perspective view of the tool assembly of the surgical stapling device shown in FIG. 1 with the tool assembly in an articulated position;
  • FIG. 15 is a side cross-sectional view of the handle assembly shown in FIG. 8 with the clutch in the clamp/fire position and the handle assembly actuated to move a drive rod of the handle assembly proximally;
  • FIG. 16 cross-sectional view of the handle assembly shown in FIG. 15 with the clutch in the clamp/fire position and the handle assembly actuated to move the drive rod of the handle assembly proximally;
  • FIG. 17 is a side perspective view of the drive assembly and clutch of the handle assembly shown in FIG. 15 with the clutch in the clamp/fire position and the handle assembly actuated to move the drive rod of the handle assembly proximally;
  • FIG. 18 is a side perspective view of the clutch and screw nut of the drive assembly shown in FIG. 17 with the parts separated;
  • FIG. 19 is a side cross-sectional view of the handle assembly shown in FIG. 15 with the clutch in the clamp/fire position and the handle assembly actuated to move the drive rod of the handle assembly proximally.
  • proximal is used generally to refer to that portion of the device that is closer to a clinician
  • distal is used generally to refer to that portion of the device that is farther from the clinician
  • endoscopic is used generally used to refer to endoscopic, laparoscopic, arthroscopic, and/or any other procedure conducted through a small diameter incision or cannula.
  • clinical practice is used generally to refer to medical personnel including doctors, nurses, and support personnel.
  • This disclosure is directed to a surgical device that includes a powered handle assembly, an adapter assembly extending from the handle assembly, and a tool assembly that is mounted to the adapter assembly about a pivot member.
  • the handle assembly includes a clutch that is movable between an articulation position and a clamp/fire position. In the articulation position, the handle assembly is configured to provide powered articulation of the tool assembly about the pivot member. In the clamp/fire position, the handle assembly is configured to provide actuation of the surgical device.
  • FIG. 1 illustrates a surgical device shown generally as stapling device 10 which includes a handle assembly 12, an elongate body or adapter assembly 14, and a tool assembly 16.
  • the handle assembly 12 includes a stationary handle portion 18, an actuation button 20, and a clutch switch 22.
  • the adapter assembly 14 defines a longitudinal axis “X” and includes a proximal portion 24 that is coupled to the handle assembly 12, and a distal portion 26 that supports the tool assembly 16.
  • the tool assembly 16 is secured to the distal portion 26 of the adapter assembly 14 by a pivot member 28 that defines an axis “Y” that is transverse to the longitudinal axis “X” .
  • the tool assembly 16 can articulate about the axis “Y” between an articulated position in which the tool assembly 16 is aligned with the longitudinal axis “Y” and non-articulated positions in which a longitudinal axis of the tool assembly and the longitudinal axis “X” define acute angles.
  • the adapter assembly 14 is supported within a rotation knob 29 that is rotatably coupled to a distal portion of the handle assembly 12.
  • the rotation knob 29 is manually rotatable about the longitudinal axis “X” to rotate the adapter assembly 14 and the tool assembly 16 about the longitudinal axis “X” .
  • the tool assembly 16 forms part of a reload assembly 30 that includes a proximal body portion 32 and is releasably coupled to the distal portion of the adapter assembly 14.
  • the reload assembly 30 can be removed from the adapter assembly 14 and replaced to facilitate reuse of the adapter assembly 14 and handle assembly 12. Alternately, the tool assembly 16 can be secured directly to the distal portion 26 of the adapter assembly 14.
  • the tool assembly 16 can be a stapling device and include a cartridge assembly 34 and an anvil 36 that are movable in relation to each other between an open position and a clamped position.
  • the anvil 36 is fixedly secured to the proximal body portion 32 of the reload assembly 30 and the cartridge assembly can pivot between the open and clamped positions.
  • the cartridge assembly 34 can be fixedly mounted to the proximal body portion 32 and the anvil can pivot between the open and clamped positions.
  • the tool assembly 16 is illustrated as a stapling device, it is envisioned that the tool assembly 16 may include a variety of different types of surgical devices including graspers, vessel sealers, clip appliers, stitching devices or the like.
  • FIGS. 2-5 illustrate the handle assembly 12 of the stapling device 10 which includes a housing 40 (FIG. 1) formed of first and second half-sections 42a and 42b and a battery pack 44.
  • the first and second half-sections 42a and 42b are coupled together to form the stationary handle portion 18 (FIG. 1) and define a cavity 46 having an opening 48.
  • the battery pack 44 is received and secured within the opening 48 and includes a base portion 50 (FIG. 5) that includes electrical contacts 52.
  • the stationary handle portion 18 of the housing 40 of the handle assembly 12 supports a motor 54 that includes a motor shaft 56.
  • the motor shaft 56 is secured to a first bevel gear 58 such that when the motor 54 is energized, the motor shaft 56 rotates the first bevel gear 58.
  • the handle assembly 12 includes a gear housing 60 that is secured within the stationary handle portion 18 of the housing 40 of the handle assembly 12 with, e.g., screws 61 (FIG. 5) such that the first bevel gear 58 is positioned within the gear housing 60.
  • the gear housing 60 supports a printed circuit board 62 ( “PCB” ) which is electrically coupled to the actuation button 20 and to the battery pack 44.
  • PCB printed circuit board
  • the handle assembly 12 includes a second bevel gear 64 that is engaged with the first bevel gear 58 and is positioned within the gear housing 60.
  • the second bevel gear 64 defines a central through bore 66 (FIG. 5) .
  • the central through bore 66 communicates with longitudinal slots 68 that extend along a length of the central through bore 66.
  • the longitudinal slots 68 are provided to couple the second bevel gear 64 to a clutch 70 which is described in further detail below.
  • the second bevel gear 64 is coupled to the first bevel gear 58 such that rotation of the first bevel gear 58 about a first axis causes rotation of the second bevel gear 64 about a second axis that is substantially transverse to the first axis.
  • the handle assembly 12 includes a support member 74 that has a distal annular flange 64a and a proximal annular flange 64b.
  • the second bevel gear 64 includes a proximal hub portion 72 that is supported for rotation within the distal annular flange 64a.
  • the support member 74 is fixedly secured to the gear housing 60 within the housing 40 of the handle assembly 12 by screws 76 (FIG. 5) .
  • the support member 74 defines a through bore 78 that extends between the annular flanges 64a and 64b of the support member 74 (FIG. 7) .
  • FIGS 5-7 illustrate components of a drive assembly of the handle assembly 12.
  • the drive assembly includes a drive screw 80, a screw nut 82, a coupling member 84, and a drive rod 86.
  • the drive screw 80 extends through the through bore 78 of the annular flange 74 and has a proximal portion and a distal portion.
  • the distal portion of the drive screw 80 is fixedly coupled to a proximal portion of the coupling member 84 by a pin 88 (FIG. 5) .
  • the coupling member 84 includes a distal portion that is coupled to a proximal portion of the drive rod 86.
  • the proximal portion of the drive rod 86 includes a stepped portion 90 that is received within a slot 92 (FIG. 6) in the distal portion of the coupling member 84 to axially fix the drive rod 86 to the coupling member 84 but allow the drive rod 86 to rotate in relation to the coupling member 84.
  • the components on the drive assembly are coupled such that the longitudinal movement of the drive screw 80 causes longitudinal movement of the drive rod 86.
  • the screw nut 82 is received partly within the central through bore 66 of the second bevel gear 64 and within the distal annular flange 64a of the support member 64.
  • the screw nut 82 defines a threaded through bore 94 and includes external gear teeth or splines 96 (FIG. 6) .
  • the threaded through bore 94 receives the drive screw 80 to threadedly couple the screw nut 82 about the drive screw 80.
  • the splines 96 engage the clutch 70 when the clutch 70 is in a clamp/fire position as described in further detail below.
  • a tubular spacer 98 is received about the drive screw 80 and engages a distal portion of the screw nut 82 to maintain the axial position of the screw nut 82 within the housing 40 of the handle assembly 12.
  • the tubular spacer 98 also supports the clutch 70 for movement between the clamp/fire position and an articulation position as described in further detail below.
  • the handle assembly 12 includes an articulation mechanism that includes a first articulation gear 100, a second articulation gear 102, an articulation screw 104, and an articulation link 106.
  • the first articulation gear 100 is supported for rotation on the gear housing 60 and includes outer gear teeth 108.
  • the first articulation gear 100 includes a distally extending hub (FIG. 6) that is rotatably supported on a bearing 112 supported on the gear housing 60.
  • the first articulation gear 100 and the bearing 112 define central openings that receive the drive screw 80.
  • the central opening of the first articulation gear 100 is defined by an annular array of splines 114 (FIG. 13) that are engaged by the clutch 70 when the clutch 70 is moved to the articulation position (FIG. 8)
  • the second articulation gear 102 is rotatably supported on the gear housing 60 and is engaged with the first articulation gear 100.
  • the second articulation gear 102 defines a threaded through bore 116 that receives the articulation screw 104.
  • the second articulation gear 102 is axially fixed to the gear housing 60 such rotation of the second articulation gear 102 causes longitudinal movement of the articulation screw 104.
  • the articulation screw 104 includes a distal portion that is coupled to a proximal portion of the articulation link 106 such that longitudinal movement of the articulation screw 104 causes longitudinal movement of the articulation link 106.
  • the articulation screw 104 includes a guide pin 116 that extends along an axis that is transverse to the longitudinal axis “X” (FIG. 1) .
  • the guide pin 116 is received within a channel 116a defined in the gear housing 60 of the handle assembly 12 to prevent the articulation screw 104 from rotating within the housing 40 of the handle assembly 12.
  • the distal portion of the housing 40 of the handle assembly 12 includes a barrel portion 120 that defines a cavity 122 that receives an articulation linkage 124 (FIG. 5) that includes an articulation body 130, an articulation frame 132, and an articulation rod 134.
  • the articulation body 130 defines a through bore 136 (FIG. 5) that receives the drive rod 86 and includes a protrusion 138.
  • the articulation frame 132 includes body defining an opening 140 that receives the protrusion 138 to fixedly secure the articulation frame 132 to the articulation body 130.
  • the articulation frame 132 includes a finger 142 that is received within an opening 144 (FIG.
  • the articulation rod 134 includes a hooked portion 134a at is distal end that is configured to engage an articulation link (not shown) included in the reload assembly 30 (FIG. 1) to facilitate articulation of the tool assembly 16 upon longitudinal movement of the articulation rod 134.
  • U. S. Patent No. 10, 123, 799 discloses exemplary aspects of a surgical device including a tool assembly that is mounted for articulation and is adapted to releasably engage an articulation rod of a surgical device.
  • the articulation linkage 124 also includes a two-part clip 146 that secures the articulation link 106 to the articulation body 130.
  • the articulation link 106 has a T-shaped head portion that is received within a T-shaped slot 150 defined in one of the pieces of the two-part clip.
  • the two-part clip 146 is secured about an annular flange 152 formed on a proximal portion of the articulation body 130 to rotatably couple the articulation body 130 to the articulation link 106.
  • This arrangement allows the articulation body 130 to rotate in relation to the articulation link 106, such as when the rotation knob 29 (FIG. 1) is rotated in relation to the handle assembly 12, to facilitate rotation of the adapter assembly 14 and tool assembly 16 about the longitudinal axis “X” .
  • the clutch 70 is slidably positioned about the tubular spacer 98 (FIG. 7) within the through bore 66 of the second bevel gear 64 and is movable between the articulation position (FIG. 8) and the clamp/fire position (FIG. 15) . In the articulation position, the clutch 70 is engaged with the first articulation gear 100 and in the clamp/fire position, the clutch 70 is engaged with the screw nut 82.
  • FIGS. 11 and 12 illustrate the clutch 70 and the second bevel gear 64.
  • the clutch 70 includes a proximal portion 160 and a distal portion 162.
  • the proximal portion 160 of the clutch 70 includes raised extensions 164 that extend in a proximal direction towards the screw nut 82 and are received within the longitudinal slots 68 in the second bevel gear 64. Receipt of the raised extensions 164 within the longitudinal slots 68 of the second bevel gear 64 rotatably couples the second bevel gear 64 to the clutch 70.
  • the motor 54 FIG. 5
  • the clutch 70 rotates with the second bevel gear 64.
  • the clutch 70 defines a through bore 170 and includes internal splines 172.
  • the splines 172 on the inner surface of the clutch 70 are engaged with the splines 96 on the screw nut 82.
  • the motor 54 (FIG. 5) is energized to rotate the clutch 70, the screw nut 82 is also rotated.
  • the distal portion 162 of the clutch 70 includes an annular flange 180 and defines an annular channel 182.
  • FIG. 13 illustrates the clutch 70 and the first articulation gear 100.
  • the distal portion of the clutch 70 supports a plurality of splines 176.
  • the splines 176 on the clutch 70 are engaged with the splines 114 of the first articulation gear 100 such that rotation of the clutch 70 causes rotation of the first articulation gear 100.
  • FIG. 6 illustrates a selector switch assembly 190 of the handle assembly 12 that is provided to allow a clinician to move the clutch 70 between the articulation and clamp/fire positions.
  • the selector switch assembly 190 includes the clutch switch 22 and a fork 192.
  • the clutch switch 22 includes a finger engagement member 196 and a base portion 198 that extends from the finger engagement member 196 into the housing 40 of the handle assembly 12.
  • the fork 192 is secured to the clutch switch 22 by a pin 200 that extends through the base portion 198 of the clutch switch 22 and is received in an opening 202 formed in the fork 192.
  • the fork 192 includes spaced tines 206 that are received within the annular channel 182 of the clutch 70.
  • FIGS. 5 and 8 illustrate a manual retraction mechanism 210 of the handle assembly 12 of the surgical stapling device 10 (FIG. 1) .
  • the manual retraction mechanism 210 includes tubular body portion 212 and a proximal handle portion 214.
  • the tubular body portion 214 is received about the drive screw 80.
  • the proximal handle portion projects from the proximal portion of the housing 40 of the handle assembly 12 and is rotatably secured to the drive screw 80 by a pin 216 such that rotation of the handle portion 214 of the manual retraction mechanism 210 causes rotation of the drive screw 80 in relation to the screw nut 82 to advance the drive screw 80 within the handle assembly 12.
  • the handle assembly 12 may include a proximal cover 220 to enclose the proximal handle portion 214 of the manual retraction mechanism 210 when not needed.
  • the manual retraction mechanism 210 can be used in the event of failure of the electrical components of the stapling device 10 (FIG. 1) to actuate the tool assembly 216 (FIG. 1) , e.g., return the tool assembly 16 to a retracted or unactuated position.
  • FIG. 5 illustrates a safety switch assembly 230 that is coupled to the PCB 62.
  • the safety switch assembly 230 is provided to prevent inadvertent firing of the stapling device 10 and must be pressed to activate the stapling device 10 (FIG. 1) before the stapling device 10 can be fired.
  • the safety switch assembly 230 will not be described in detail herein.
  • FIGS. 8-10 illustrate the stapling device 10 as the clutch switch 22 is moved to the articulation position.
  • the clutch switch 22 is slid in a distal direction as indicated by arrow “A” in FIG. 8
  • the clutch 70 is moved about the tubular spacer 98 in the direction of arrow “B” to move the splines 176 (FIG. 13) on the distal portion 162 of the clutch 70 into engagement with the splines 114 on the first articulation gear 100.
  • the engaging ends of the splines 114 and 176 can be tapered to allow the splines to self-align.
  • the motor 54 When the motor 54 is energized, the motor 54 rotates the first bevel gear 58 which is engaged with and rotates the second bevel gear 64.
  • the second bevel gear 64 is engaged with the clutch 70 such that rotation of the second bevel gear 64 rotates the clutch 70.
  • the clutch 70 is engaged with the first articulation gear 100.
  • Rotation of the first articulation gear 100 causes rotation of the second articulation gear 102 about the articulation screw 102 in the direction indicated by arrow “C” in FIG. 9 to move the articulation screw 104 longitudinally in the direction of arrow “D” .
  • the articulation screw 104 is coupled to the articulation link 106 such that longitudinal movement of the articulation screw 104 causes longitudinal movement of the articulation link 106 in the direction of arrow “E” in FIG. 9.
  • longitudinal movement of the articulation link 106 causes longitudinal movement of the articulation body 130, the articulation plate 132, and the articulation rod 134 to articulate the tool assembly 16 in the direction of arrow “F” in FIG. 14
  • FIGS. 15-20 illustrate the clutch 70 in the clamp/fire position.
  • the clutch switch 22 When the clutch switch 22 is moved proximally along the outer surface of the housing 40 in the direction of arrow “G” in FIG. 15, the clutch 70 is moved proximally along the tubular spacer 98 in the direction of arrows “H” in FIG. 15 to move the splines 172 (FIG. 18) of the clutch 70 into engagement with the splines 96 (FIG. 18) of the screw nut 82.
  • the clutch 70 will disengage from the first articulation gear 100.
  • the motor 54 In the clamp/fire position, when the motor 54 is energized, the motor 54 rotates the first bevel gear 58 which is engaged with and rotates the second bevel gear 64.
  • the second bevel gear 64 is engaged with the clutch 70 such that rotation of the second bevel gear 64 rotates the clutch 70 in the direction of arrow “I” in FIG. 19.
  • the screw nut 82 also rotates about the drive screw 80 to move the drive screw 80 longitudinally in the direction of arrow “J” .
  • the drive screw 80 is coupled to the drive rod 86 and moves the drive rod 86 longitudinally within the adapter assembly 14 (FIG. 1) .
  • the PCB 62 (FIG. 5) is electrically coupled to battery pack 44, the motor 54, the actuation button 20, and the safety switch assembly 230.
  • the PCB 62 accommodates a motor controller, switches that are coupled to the actuation button 20 (FIG. 3) , and a processor or controller that controls operation of the handle assembly 10 to control actuation of the tool assembly 16 (FIG. 1) .
  • the controller can include any suitable electrical components for operating the disclosed surgical device or components thereof.
  • the controller may include any type of computing device, computational circuit, or any type of processor or processing circuit capable of executing a series of instructions that are stored in memory.
  • the controller may include multiple processors and/or multicore central processing units (CPUs) and may include any type of processor, such as a microprocessor, digital signal processor, microcontroller, programmable logic device (PLD) , field programmable gate array (FPGA) , or the like.
  • the controller may also include a memory to store data and/or instructions that, when executed by the one or more processors, cause the one or more processors to perform one or more methods and/or algorithms.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

Un dispositif chirurgical comprend un ensemble poignée motorisée (12), un ensemble adaptateur (14) s'étendant à partir de l'ensemble poignée (12), et un ensemble outil (16) qui est monté sur l'ensemble adaptateur (14) autour d'un élément pivot (28). L'ensemble poignée (12) comprend un embrayage (70) qui est mobile entre une position d'articulation et une position de serrage/actionnement. Dans la position d'articulation, l'ensemble poignée (12) est configuré pour fournir une articulation motorisée de l'ensemble outil (16) autour de l'élément pivot (28). Dans la position de serrage/actionnement, l'ensemble poignée (12) est conçu pour permettre l'actionnement du dispositif chirurgical.
PCT/CN2020/100951 2020-07-09 2020-07-09 Ensemble poignée motorisée pour dispositifs médicaux WO2022006795A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PCT/CN2020/100951 WO2022006795A1 (fr) 2020-07-09 2020-07-09 Ensemble poignée motorisée pour dispositifs médicaux
US18/015,250 US20230263522A1 (en) 2020-07-09 2020-11-23 Powered handle assembly for surgical devices
EP20944595.6A EP4178455A4 (fr) 2020-07-09 2020-12-23 Ensemble poignée motorisé pour dispositifs médicaux
JP2023501083A JP2023533288A (ja) 2020-07-09 2020-12-23 外科デバイスのための電動ハンドル組立体
PCT/CN2020/138521 WO2022007344A1 (fr) 2020-07-09 2020-12-23 Ensemble poignée motorisé pour dispositifs médicaux
CN202121529030.3U CN217040204U (zh) 2020-07-09 2021-07-06 用于外科装置的手柄组合件和外科装置
CN202110759594.4A CN113907822A (zh) 2020-07-09 2021-07-06 用于外科装置的电动手柄组合件

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PCT/CN2020/100951 WO2022006795A1 (fr) 2020-07-09 2020-07-09 Ensemble poignée motorisée pour dispositifs médicaux

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