US20210121196A1 - Removable fluid reservoir and ultrasonic surgical instrument including the same - Google Patents
Removable fluid reservoir and ultrasonic surgical instrument including the same Download PDFInfo
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- US20210121196A1 US20210121196A1 US17/140,233 US202117140233A US2021121196A1 US 20210121196 A1 US20210121196 A1 US 20210121196A1 US 202117140233 A US202117140233 A US 202117140233A US 2021121196 A1 US2021121196 A1 US 2021121196A1
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- fluid
- fluid reservoir
- housing
- inflow
- surgical instrument
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- 239000012530 fluid Substances 0.000 title claims abstract description 170
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 238000001816 cooling Methods 0.000 abstract description 4
- 239000012636 effector Substances 0.000 description 18
- 230000004913 activation Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 241000321728 Tritogonia verrucosa Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- -1 e.g. Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B17/320092—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00477—Coupling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320072—Working tips with special features, e.g. extending parts
- A61B2017/320074—Working tips with special features, e.g. extending parts blade
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320084—Irrigation sleeves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B17/320092—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
- A61B2017/320094—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw additional movable means performing clamping operation
Definitions
- the present disclosure relates to surgical instruments and, in particular, to a removable fluid reservoir and ultrasonic surgical instrument including the same to facilitate cooling of the surgical instrument
- Energy-based tissue treatment is well known in the art.
- Various types of energy e.g., electrical, ultrasonic, microwave, cryogenic, thermal, laser, etc.
- Ultrasonic energy for example, may be delivered to tissue to treat, e.g., coagulate and/or cut, tissue.
- Ultrasonic surgical instruments typically include a waveguide having a transducer coupled thereto at a proximal end of the waveguide and an end effector disposed at a distal end of the waveguide.
- the waveguide transmits ultrasonic energy produced by the transducer to the end effector for treating tissue at the end effector.
- the end effector may include a blade, hook, ball, shears, etc., and/or other features such as one or more jaws for grasping or manipulating tissue.
- the waveguide and/or end effector of an ultrasonic surgical instrument can reach temperatures greater than 200° C.
- distal refers to the portion that is being described which is further from a user
- proximal refers to the portion that is being described which is closer to a user
- a fluid reservoir configured for releasable engagement with an ultrasonic surgical instrument.
- the fluid reservoir includes a housing including a body, a leading end, and a trailing end enclosing a fluid chamber configured for storing fluid therein.
- the fluid reservoir further includes sealed inflow and outflow ports disposed at the leading end of the housing and a heat exchanger disposed at the trailing end of the housing.
- the fluid reservoir further includes inflow and outflow shafts operably coupled to the sealed inflow and outflow ports, respectively, and extending into the fluid chamber.
- the inflow and outflow shafts define different lengths such that open ends of the inflow and outflow shafts are spaced-apart from one another along a length of the fluid chamber.
- the heat exchanger includes a plurality of fins configured to facilitate heat exchange between an exterior and an interior of the housing.
- the body defines a guide slot along a substantial portion of a length thereof that is configured to facilitate aligned insertion of the housing into an ultrasonic surgical instrument.
- the sealed inflow and outflow ports are each configured to be punctured by a needle.
- An ultrasonic surgical instrument provided in accordance with aspects of the present disclosure includes a housing defining a barrel portion and a fixed handle portion extending from the barrel portion.
- the fixed handle portion defines an internal cavity.
- the ultrasonic surgical instrument further includes an ultrasonic transducer received at least partially within the barrel portion of the housing, a waveguide operably coupled to the ultrasonic transducer and extending distally from the housing to a blade configured to treat tissue with ultrasonic energy produced by the ultrasonic transducer and transmitted along the waveguide, a fluid management system disposed within the housing, and a fluid reservoir releasably engageable within the internal cavity of the fixed handle portion of the housing.
- the fluid reservoir includes a body, a leading end, and a trailing end enclosing a fluid chamber storing fluid therein.
- the fluid reservoir further includes inflow and outflow ports disposed at the leading end and a heat exchanger disposed at the trailing end. Upon engagement of the fluid reservoir within the internal cavity, the inflow and outflow ports are operably coupled with the fluid management system to enable fluid from the fluid reservoir to be circulated to cool the blade.
- the inflow and outflow ports of the fluid reservoir are sealed and the fluid management system includes inflow and outflow needles configured to puncture the sealed inflow and outflow ports, respectively, to fluidly couple the fluid management system with the fluid reservoir.
- the fluid reservoir further includes inflow and outflow shafts operably coupled to the inflow and outflow ports, respectively, and extending into the fluid chamber.
- the inflow and outflow shafts may define different lengths such that open ends of the inflow and outflow shafts are spaced-apart from one another along a length of the fluid chamber.
- the heat exchanger includes a plurality of fins configured to facilitate heat exchange between an exterior and an interior of the fluid reservoir.
- the heat exchanger may remain external of the housing when the fluid reservoir is engaged within the internal cavity.
- the fixed handle portion includes a guide rail disposed within the internal cavity and the body of the fluid reservoir defines a guide slot configured to receive the guide rail to guide insertion of the fluid reservoir into the internal cavity.
- the fluid management system includes an inflow conduit communicating with a lumen disposed within the waveguide for circulating fluid from the fluid reservoir through the waveguide.
- the fluid management system includes a fluid pump configured to pump fluid at least one of to or from the fluid reservoir.
- FIG. 1 is a perspective view of an ultrasonic surgical instrument provided in accordance with the present disclosure, wherein the distal end thereof is enlarged to better illustrate the components and features thereof;
- FIG. 2 is a side view of the ultrasonic surgical instrument of FIG. 1 with components removed, wherein the distal end thereof is enlarged and shown in cross-section to better illustrate features thereof;
- FIG. 3 is a perspective view of a fluid reservoir provided in accordance with the present disclosure and configured for use with the ultrasonic surgical instrument of FIG. 1 ;
- FIG. 4 is a side view of a fixed handle portion of the ultrasonic surgical instrument of FIG. 1 and the fluid reservoir of FIG. 3 disengaged therefrom;
- FIG. 5 is a longitudinal, cross-sectional view of the distal end of another ultrasonic surgical instrument provided in accordance with the present disclosure.
- Ultrasonic surgical instrument 10 includes a housing 20 , a movable handle 40 operably coupled to housing 20 , a shaft 50 extending distally from housing 20 , a rotation knob 60 supported on housing 20 and configured for rotating shaft 50 relative to housing 20 , and an ultrasonic transducer 80 removably engageable with housing 20 .
- Ultrasonic surgical instrument 10 further includes an end effector assembly 100 disposed at a distal end of shaft 50 , a waveguide 120 extending through housing 20 and shaft 50 and operably coupling ultrasonic transducer 80 to end effector assembly 100 , a drive assembly (not shown) operably coupled between movable handle 40 and end effector assembly 100 , and an activation assembly (not shown) operably coupled to housing 20 or remotely disposed relative to housing 20 for enabling the selective supply of energy to ultrasonic transducer 80 to drive ultrasonic transducer 80 .
- Ultrasonic surgical instrument 10 additionally includes a fluid management assembly 200 disposed within housing 20 , a fluid reservoir 300 configured for releasable engagement with housing 20 and fluid management assembly 200 , and a cable 400 configured to connect to a generator (not shown) or other power source for driving ultrasonic transducer 80 .
- Housing 20 defines a longitudinally-extending barrel portion 22 and a fixed handle portion 26 extending obliquely from barrel portion 22 to define a pistol-grip style configuration of housing 20 .
- Barrel portion 22 of housing 20 is configured to removably receive at least a portion of ultrasonic transducer 80 therein to enable ultrasonic transducer 80 to operably couple with waveguide 120 .
- Barrel portion 22 further defines a distal opening through which shaft 50 , the drive sleeve of the drive assembly (not shown), and waveguide 120 extend in substantially coaxial arrangement.
- Fixed handle portion 26 of housing 20 is positioned adjacent movable handle 40 to enable a user to grasp fixed handle portion 26 of housing 20 and manipulate movable handle 40 with a single hand.
- Fixed handle portion 26 more specifically, defines an interior cavity 27 having an open lower end 28 to enable receipt of fluid reservoir 300 therein, as detailed below.
- Fixed handle portion 26 further defines a pair of opposed cut-outs 29 adjacent open lower end 28 thereof, on opposing sides of fixed handle portion 26 .
- Fixed handle portion 26 also includes a guide rail 30 disposed on an interior surface of fixed handle portion 26 and extending into interior cavity 27 .
- Guide rail 30 extends a substantial portion of the length of fixed handle portion 26 , e.g., at least 50% of the length of fixed handle portion 26 or, in embodiments, at least 75% of the length of fixed handle portion 26 .
- Movable handle 40 includes a grasping portion 42 configured to facilitate grasping and manipulation by a user. Movable handle 40 further includes a flange portion 44 extending into barrel portion 22 of housing 20 . Flange portion 44 is pivotably coupled to housing 20 within housing 20 and is operably coupled to the drive assembly (not shown) of ultrasonic surgical instrument 10 such that pivoting of movable handle 40 relative to fixed handle portion 26 of housing 20 from a spaced-apart position towards an approximated position pivots clamp arm 102 of end effector assembly 100 relative to blade 124 of end effector assembly 100 from an open position to a clamping position for clamping tissue therebetween.
- shaft 50 is rotatably supported by housing 20 and extends distally through a distal opening of barrel portion 22 of housing 20 .
- Shaft 50 includes end effector assembly 100 disposed at a distal end thereof.
- Shaft 50 is disposed about the drive sleeve of the drive assembly (not shown), although it is also contemplated that this configuration be reversed, e.g., wherein the drive sleeve is disposed about shaft 50 .
- Shaft 50 is longitudinally fixed relative to housing 20 but is rotatable relative thereto in response to rotation of rotation knob 60 relative to housing 20 via coupling therebetween.
- Rotation knob 60 is also coupled to the drive sleeve and waveguide 120 such that rotation of rotation knob 60 likewise rotates the drive sleeve, waveguide 120 , and ultrasonic transducer 80 relative to housing 20 in response to rotation of rotation knob 60 relative to housing 20 .
- End effector assembly 100 includes clamp arm 102 , blade 124 of waveguide 120 , a pair of clevis members 112 (only one clevis member 112 is illustrated in FIG. 1 with the other being obstructed), and a drive link 116 .
- Clamp arm 102 includes a frame 104 and a tissue pad 108 engaged with frame 104 .
- Frame 104 of clamp arm 102 is pivotably coupled to a distal end portion of shaft 50 by way of clevis members 112 .
- Drive link 116 is coupled between frame 104 of clamp arm 102 and a distal end portion of the drive sleeve such that translation of the drive sleeve translates drive link 116 to thereby pivot clamp arm 102 between the open and clamping positions.
- Waveguide 120 defines a body 122 , a blade 124 extending from the distal end of body 122 , and a proximal connector 126 extending from the proximal end of body 122 .
- Waveguide 120 defines an internal lumen 128 extending from a proximal portion thereof into blade 124 .
- Internal lumen 128 is disposed in communication with a proximal port 129 defined through body 122 of waveguide 120 towards the proximal end thereof to enable the inflow and outflow of fluid into and out of internal lumen 128 , as detailed below.
- a rotary manifold (not shown) is provided to enable the inflow and outflow of fluid into and out of internal lumen 128 while allowing waveguide 120 to rotate through 360 degrees relative to housing 20 .
- Internal lumen 128 of waveguide 120 defines a closed distal end within blade 124 .
- Blade 124 forms part of end effector assembly 100 in that blade 124 is positioned to oppose clamp arm 102 such that pivoting of clamp arm 102 from the open position to the clamping position enables clamping of tissue between clamp arm 102 and blade 124 .
- Blade 124 may define a linear configuration as shown, or may define a curved configuration.
- Proximal connector 126 of waveguide 120 is configured to enable engagement of waveguide 120 with ultrasonic transducer 80 , e.g., via a threaded engagement or other suitable engagement, such that mechanical motion produced by ultrasonic transducer 80 is capable of being transmitted along waveguide 120 to blade 124 for treating tissue clamped between blade 124 and clamp arm 102 or positioned adjacent blade 124 .
- the drive assembly (not shown) operably couples movable handle 40 with clamp arm 102 such that actuation of movable handle 40 pivots clamp arm 102 between the open and clamping positions.
- the activation assembly may include a button or other suitable actuator enabling enable manual manipulation by a user.
- the activation assembly includes a two-mode button wherein actuation to a first actuated position supplies energy to ultrasonic transducer 80 corresponding to a “LOW” power mode, and wherein actuation to a second actuated position supplies energy to ultrasonic transducer 80 corresponding to a “HIGH” power mode.
- fluid management assembly 200 is disposed within housing 20 and includes a fluid pump 210 , an inflow fluid assembly 220 , and an outflow fluid assembly 230 .
- Inflow fluid assembly 220 includes a hollow needle 222 extending into interior cavity 27 of fixed handle portion 26 of housing 20 and defining a sharp tip 223 therein, a first conduit segment 224 configured to couple hollow needle 222 with fluid pump 210 , and a second conduit segment 226 extending from fluid pump 210 through proximal port 129 of waveguide 120 and distally through internal lumen 128 of waveguide 120 to a position adjacent but distally-spaced from the closed distal end of internal lumen 128 .
- Outflow fluid assembly 230 includes a hollow needle 232 extending into interior cavity 27 of fixed handle portion 26 of housing 20 and defining a sharp tip 233 therein, a first conduit segment 234 configured to couple hollow needle 232 with fluid pump 210 , and a second conduit segment 236 extending from fluid pump 210 into proximal port 129 of waveguide 120 .
- second conduit segment 236 of outflow fluid assembly 230 does not extend distally through waveguide 120 into blade 124 . Rather, second conduit segment 236 terminates within internal lumen 128 adjacent to proximal port 129 of waveguide or extends partially through internal lumen 128 of waveguide 120 without extending into blade 124 .
- other configurations of the inflow and outflow paths through waveguide 120 are also contemplated.
- Fluid pump 210 may be a piezoelectric microfluidic pump or other microfluidic pumps such as micro-peristaltic pumps, syringe pumps, etc. and may be connected to the generator (or other power source) through cable 400 for powering fluid pump 210 or may include a battery that powers fluid pump 210 .
- Fluid pump 210 is configured to draw fluid into hollow needle 222 and first conduit segment 224 and pump the fluid through second conduit segment 226 into internal lumen 128 within blade 124 of waveguide 120 .
- fluid pump 210 is configured to draw fluid proximally from blade 124 within the annular space defined between second conduit segment 226 of inflow fluid assembly 220 and the interior wall of waveguide 120 that defines internal lumen 128 , into second conduit segment 236 of outflow fluid assembly 230 and to pump the fluid through first conduit segment 234 and needle 232 of outflow fluid assembly 230 .
- fluid management assembly 200 enables the circulation of fluid through waveguide 120 and, specifically, blade 124 of waveguide 120 , to facilitate cooling of blade 124 .
- fluid reservoir 300 includes a housing 310 defining a generally tubular body 320 having an insertion end 322 and a trailing end 324 enclosing therein a fluid chamber 330 .
- Fluid reservoir 300 is pre-filled and stores therein a fluid, e.g., water, saline, etc.
- a guide slot 340 is defined within and extends along a substantial portion of the length of tubular body 320 , e.g., at least 50% of the length of tubular body 320 or, in embodiments, at least 75% of the length of tubular body 320 .
- Insertion end 322 of fluid reservoir 300 includes a sealed inflow port 342 and a sealed outflow port 344 .
- Inflow and outflow shafts 343 , 345 extend from sealed inflow and outflow ports 342 , 344 , respectively, into fluid chamber 330 . More specifically, inflow shaft 343 defines a relatively greater length and thus extends further through fluid chamber 330 such that the open end of inflow shaft 343 is positioned towards trailing end 324 of fluid reservoir 300 , whereas outflow shaft 345 defines a relatively smaller length and thus does not extend as far through fluid chamber 330 but, rather, the open end of outflow shaft 345 is positioned towards insertion end 322 of fluid reservoir 300 .
- inflow shaft 343 may further include a filter 348 disposed at the open end thereof for filtering any fluid drawn into inflow shaft 343 .
- Trailing end 324 of fluid reservoir 300 includes a passive heat exchanger 350 disposed thereon.
- Passive heat exchanger 350 may include, for example, a plurality of spaced-apart fins 352 extending outwardly from trailing end 324 . Fins 352 are configured to increase surface area and, thus, heat exchange between the interior and exterior of fluid reservoir 300 adjacent trailing end 324 of fluid reservoir 300 . Further, with the open end of inflow shaft 343 positioned towards trailing end 324 of fluid reservoir 300 , passive heat exchanger 350 helps cool fluid being drawn into inflow shaft 343 .
- fluid reservoir 300 in order to engage fluid reservoir 300 within ultrasonic surgical instrument 10 , fluid reservoir 300 , lead by insertion end 322 thereof is inserted into open lower end 28 of fixed handle portion 26 of housing 20 such that guide rail 30 is aligned with guide slot 340 . As fluid reservoir 300 is advanced further into interior cavity 27 of fixed handle portion 26 , guide rail 30 is received within guide slot 340 to guide insertion of fluid reservoir 300 .
- Fluid reservoir 300 may be maintained in engagement within fixed handle portion 26 via friction-fitting and/or other suitable releasable mechanical locking engagement.
- passive heat exchanger 350 remains external of fixed handle portion 26 , extending therefrom so as to facilitate heat exchange. Further, opposing portions of body 320 of fluid reservoir 300 towards trailing end 324 thereof are exposed through cut-outs 29 of fixed handle portion 26 to enable grasping, disengagement, and withdrawal of fluid reservoir 300 from fixed handle portion 26 .
- ultrasonic surgical instrument 10 may be utilized to treat tissue clamped between blade 124 and clamp arm 102 or positioned adjacent blade 124 .
- blade 124 may reach temperatures greater than 200° C.
- pump 210 of fluid management system 200 is activated, e.g., manually via an activation button (not shown) on housing 20 or remote therefrom or automatically after de-activation of ultrasonic transducer 80 , to draw fluid from fluid reservoir 300 into inflow shaft 343 , hollow needle 222 , first conduit segment 224 , and through second conduit segment 226 , which extends into internal lumen 128 within blade 124 of waveguide 120 .
- the fluid then returns proximally within the annular space defined between second conduit segment 226 and the interior wall of waveguide 120 , into second conduit segment 236 of outflow fluid assembly 230 , first conduit segment 234 , needle 232 , and outflow shaft 345 , ultimately returning to fluid reservoir 300 .
- Fluid reservoir 300 In order to remove fluid reservoir 300 after use, the opposing portions of body 320 of fluid reservoir 300 that are exposed through cut-outs 29 of fixed handle portion 26 are grasped and pulled away from housing 20 to thereby disengage and withdraw fluid reservoir 300 from fixed handle portion 26 . Fluid reservoir 300 may be replaced with a new fluid reservoir 300 and may ultimately be discarded or reprocessed for subsequent use.
- End effector assembly 1100 is similar to and may include any of the features of end effector assembly 100 ( FIG. 1 ), except as specifically contradicted below.
- End effector assembly 1100 is configured for use with ultrasonic surgical instrument 10 ( FIG. 1 ) and includes a clamp arm 1102 and blade 1124 of waveguide 1120 .
- Clamp arm 1102 is pivotable relative to blade 1124 between an open position and a clamping position for clamping tissue therebetween.
- Clamp arm 1102 includes a frame 1104 and a tissue pad 1108 engaged with frame 1104 .
- Frame 1104 and/or tissue pad 1108 define a plurality of nozzles 1140 spaced-apart along a substantial portion, e.g., at least 50% or in embodiments at least 75%, of the length thereof and extending therethrough in communication with a longitudinally-extending lumen 1150 defined through frame 1104 and/or tissue pad 1108 .
- Longitudinally-extending lumen 1150 is coupled to an inflow conduit 1152 that extends from clamp arm 1102 proximally through shaft 50 and into housing 20 of ultrasonic surgical instrument 10 (see FIGS. 1 and 2 ).
- Inflow conduit 1152 functions as the second conduit segment 226 of the inflow fluid assembly 220 ( FIG. 2 ) and is configured to couple to fluid reservoir 300 similarly as detailed above with respect to inflow fluid assembly 220 ( FIG. 2 ).
- end effector assembly 1100 provides an open-loop configuration, no outflow fluid assembly or outflow port in fluid reservoir 300 need be provided (although such could be provided for use with both closed-loop and open-loop configurations, wherein the outflow portions are simply not used when an open-loop configuration is provided).
- fluid is drawn from fluid reservoir 300 ( FIG. 2 ) into inflow conduit 1152 and is pumped distally through inflow conduit 1152 , ultimately spraying out from nozzles 1140 to cool blade 1124 along a substantial portion of the length of blade 1124 .
Abstract
Description
- This application is a continuation application of U.S. patent application Ser. No. 15/895,254, filed on Feb. 13, 2018, the entire contents of which being incorporated by reference herein.
- The present disclosure relates to surgical instruments and, in particular, to a removable fluid reservoir and ultrasonic surgical instrument including the same to facilitate cooling of the surgical instrument
- Energy-based tissue treatment is well known in the art. Various types of energy (e.g., electrical, ultrasonic, microwave, cryogenic, thermal, laser, etc.) are applied to tissue to achieve a desired result. Ultrasonic energy, for example, may be delivered to tissue to treat, e.g., coagulate and/or cut, tissue.
- Ultrasonic surgical instruments, for example, typically include a waveguide having a transducer coupled thereto at a proximal end of the waveguide and an end effector disposed at a distal end of the waveguide. The waveguide transmits ultrasonic energy produced by the transducer to the end effector for treating tissue at the end effector. The end effector may include a blade, hook, ball, shears, etc., and/or other features such as one or more jaws for grasping or manipulating tissue. During use, the waveguide and/or end effector of an ultrasonic surgical instrument can reach temperatures greater than 200° C.
- As used herein, the term “distal” refers to the portion that is being described which is further from a user, while the term “proximal” refers to the portion that is being described which is closer to a user. Further, to the extent consistent, any of the aspects described herein may be used in conjunction with any or all of the other aspects described herein.
- Provided in accordance with aspects of the present disclosure is a fluid reservoir configured for releasable engagement with an ultrasonic surgical instrument. The fluid reservoir includes a housing including a body, a leading end, and a trailing end enclosing a fluid chamber configured for storing fluid therein. The fluid reservoir further includes sealed inflow and outflow ports disposed at the leading end of the housing and a heat exchanger disposed at the trailing end of the housing.
- In an aspect of the present disclosure, the fluid reservoir further includes inflow and outflow shafts operably coupled to the sealed inflow and outflow ports, respectively, and extending into the fluid chamber.
- In another aspect of the present disclosure, the inflow and outflow shafts define different lengths such that open ends of the inflow and outflow shafts are spaced-apart from one another along a length of the fluid chamber.
- In still another aspect of the present disclosure, the heat exchanger includes a plurality of fins configured to facilitate heat exchange between an exterior and an interior of the housing.
- In yet another aspect of the present disclosure, the body defines a guide slot along a substantial portion of a length thereof that is configured to facilitate aligned insertion of the housing into an ultrasonic surgical instrument.
- In still yet another aspect of the present disclosure, the sealed inflow and outflow ports are each configured to be punctured by a needle.
- An ultrasonic surgical instrument provided in accordance with aspects of the present disclosure includes a housing defining a barrel portion and a fixed handle portion extending from the barrel portion. The fixed handle portion defines an internal cavity. The ultrasonic surgical instrument further includes an ultrasonic transducer received at least partially within the barrel portion of the housing, a waveguide operably coupled to the ultrasonic transducer and extending distally from the housing to a blade configured to treat tissue with ultrasonic energy produced by the ultrasonic transducer and transmitted along the waveguide, a fluid management system disposed within the housing, and a fluid reservoir releasably engageable within the internal cavity of the fixed handle portion of the housing. The fluid reservoir includes a body, a leading end, and a trailing end enclosing a fluid chamber storing fluid therein. The fluid reservoir further includes inflow and outflow ports disposed at the leading end and a heat exchanger disposed at the trailing end. Upon engagement of the fluid reservoir within the internal cavity, the inflow and outflow ports are operably coupled with the fluid management system to enable fluid from the fluid reservoir to be circulated to cool the blade.
- In an aspect of the present disclosure, the inflow and outflow ports of the fluid reservoir are sealed and the fluid management system includes inflow and outflow needles configured to puncture the sealed inflow and outflow ports, respectively, to fluidly couple the fluid management system with the fluid reservoir.
- In another aspect of the present disclosure, the fluid reservoir further includes inflow and outflow shafts operably coupled to the inflow and outflow ports, respectively, and extending into the fluid chamber. The inflow and outflow shafts may define different lengths such that open ends of the inflow and outflow shafts are spaced-apart from one another along a length of the fluid chamber.
- In still another aspect of the present disclosure, the heat exchanger includes a plurality of fins configured to facilitate heat exchange between an exterior and an interior of the fluid reservoir. The heat exchanger may remain external of the housing when the fluid reservoir is engaged within the internal cavity.
- In yet another aspect of the present disclosure, the fixed handle portion includes a guide rail disposed within the internal cavity and the body of the fluid reservoir defines a guide slot configured to receive the guide rail to guide insertion of the fluid reservoir into the internal cavity.
- In still yet another aspect of the present disclosure, the fluid management system includes an inflow conduit communicating with a lumen disposed within the waveguide for circulating fluid from the fluid reservoir through the waveguide.
- In another aspect of the present disclosure, the fluid management system includes a fluid pump configured to pump fluid at least one of to or from the fluid reservoir.
- Various aspects and features of the present disclosure are described hereinbelow with reference to the drawings wherein like numerals designate identical or corresponding elements in each of the several views:
-
FIG. 1 is a perspective view of an ultrasonic surgical instrument provided in accordance with the present disclosure, wherein the distal end thereof is enlarged to better illustrate the components and features thereof; -
FIG. 2 is a side view of the ultrasonic surgical instrument ofFIG. 1 with components removed, wherein the distal end thereof is enlarged and shown in cross-section to better illustrate features thereof; -
FIG. 3 is a perspective view of a fluid reservoir provided in accordance with the present disclosure and configured for use with the ultrasonic surgical instrument ofFIG. 1 ; -
FIG. 4 is a side view of a fixed handle portion of the ultrasonic surgical instrument ofFIG. 1 and the fluid reservoir ofFIG. 3 disengaged therefrom; and -
FIG. 5 is a longitudinal, cross-sectional view of the distal end of another ultrasonic surgical instrument provided in accordance with the present disclosure. - Referring to
FIGS. 1 and 2 , an ultrasonic surgical instrument provided in accordance with the aspects and features of the present disclosure is shown generally identified byreference numeral 10. Ultrasonicsurgical instrument 10 includes ahousing 20, amovable handle 40 operably coupled tohousing 20, ashaft 50 extending distally fromhousing 20, arotation knob 60 supported onhousing 20 and configured for rotatingshaft 50 relative tohousing 20, and anultrasonic transducer 80 removably engageable withhousing 20. Ultrasonicsurgical instrument 10 further includes anend effector assembly 100 disposed at a distal end ofshaft 50, awaveguide 120 extending throughhousing 20 andshaft 50 and operably couplingultrasonic transducer 80 toend effector assembly 100, a drive assembly (not shown) operably coupled betweenmovable handle 40 andend effector assembly 100, and an activation assembly (not shown) operably coupled tohousing 20 or remotely disposed relative tohousing 20 for enabling the selective supply of energy toultrasonic transducer 80 to driveultrasonic transducer 80. Ultrasonicsurgical instrument 10 additionally includes afluid management assembly 200 disposed withinhousing 20, afluid reservoir 300 configured for releasable engagement withhousing 20 andfluid management assembly 200, and acable 400 configured to connect to a generator (not shown) or other power source for drivingultrasonic transducer 80. -
Housing 20 defines a longitudinally-extendingbarrel portion 22 and afixed handle portion 26 extending obliquely frombarrel portion 22 to define a pistol-grip style configuration ofhousing 20.Barrel portion 22 ofhousing 20 is configured to removably receive at least a portion ofultrasonic transducer 80 therein to enableultrasonic transducer 80 to operably couple withwaveguide 120.Barrel portion 22 further defines a distal opening through whichshaft 50, the drive sleeve of the drive assembly (not shown), andwaveguide 120 extend in substantially coaxial arrangement. - Fixed
handle portion 26 ofhousing 20 is positioned adjacentmovable handle 40 to enable a user to graspfixed handle portion 26 ofhousing 20 and manipulatemovable handle 40 with a single hand. Fixedhandle portion 26, more specifically, defines aninterior cavity 27 having an openlower end 28 to enable receipt offluid reservoir 300 therein, as detailed below. Fixedhandle portion 26 further defines a pair of opposed cut-outs 29 adjacent openlower end 28 thereof, on opposing sides offixed handle portion 26. Fixedhandle portion 26 also includes aguide rail 30 disposed on an interior surface offixed handle portion 26 and extending intointerior cavity 27.Guide rail 30 extends a substantial portion of the length offixed handle portion 26, e.g., at least 50% of the length offixed handle portion 26 or, in embodiments, at least 75% of the length offixed handle portion 26. -
Movable handle 40 includes agrasping portion 42 configured to facilitate grasping and manipulation by a user.Movable handle 40 further includes aflange portion 44 extending intobarrel portion 22 ofhousing 20.Flange portion 44 is pivotably coupled tohousing 20 withinhousing 20 and is operably coupled to the drive assembly (not shown) of ultrasonicsurgical instrument 10 such that pivoting ofmovable handle 40 relative tofixed handle portion 26 ofhousing 20 from a spaced-apart position towards an approximated positionpivots clamp arm 102 ofend effector assembly 100 relative toblade 124 ofend effector assembly 100 from an open position to a clamping position for clamping tissue therebetween. - With continued reference to
FIGS. 1 and 2 ,shaft 50 is rotatably supported byhousing 20 and extends distally through a distal opening ofbarrel portion 22 ofhousing 20. Shaft 50 includesend effector assembly 100 disposed at a distal end thereof.Shaft 50 is disposed about the drive sleeve of the drive assembly (not shown), although it is also contemplated that this configuration be reversed, e.g., wherein the drive sleeve is disposed aboutshaft 50.Shaft 50 is longitudinally fixed relative tohousing 20 but is rotatable relative thereto in response to rotation ofrotation knob 60 relative tohousing 20 via coupling therebetween.Rotation knob 60 is also coupled to the drive sleeve andwaveguide 120 such that rotation ofrotation knob 60 likewise rotates the drive sleeve,waveguide 120, andultrasonic transducer 80 relative tohousing 20 in response to rotation ofrotation knob 60 relative tohousing 20. -
End effector assembly 100 includesclamp arm 102,blade 124 ofwaveguide 120, a pair of clevis members 112 (only oneclevis member 112 is illustrated inFIG. 1 with the other being obstructed), and adrive link 116.Clamp arm 102 includes aframe 104 and atissue pad 108 engaged withframe 104.Frame 104 ofclamp arm 102 is pivotably coupled to a distal end portion ofshaft 50 by way of clevismembers 112.Drive link 116 is coupled betweenframe 104 ofclamp arm 102 and a distal end portion of the drive sleeve such that translation of the drive sleeve translatesdrive link 116 to thereby pivotclamp arm 102 between the open and clamping positions. -
Waveguide 120 defines abody 122, ablade 124 extending from the distal end ofbody 122, and aproximal connector 126 extending from the proximal end ofbody 122.Waveguide 120 defines aninternal lumen 128 extending from a proximal portion thereof intoblade 124.Internal lumen 128 is disposed in communication with aproximal port 129 defined throughbody 122 ofwaveguide 120 towards the proximal end thereof to enable the inflow and outflow of fluid into and out ofinternal lumen 128, as detailed below. In embodiments, a rotary manifold (not shown) is provided to enable the inflow and outflow of fluid into and out ofinternal lumen 128 while allowingwaveguide 120 to rotate through 360 degrees relative tohousing 20. -
Internal lumen 128 ofwaveguide 120 defines a closed distal end withinblade 124.Blade 124, as noted above, forms part ofend effector assembly 100 in thatblade 124 is positioned to opposeclamp arm 102 such that pivoting ofclamp arm 102 from the open position to the clamping position enables clamping of tissue betweenclamp arm 102 andblade 124.Blade 124 may define a linear configuration as shown, or may define a curved configuration. -
Proximal connector 126 ofwaveguide 120 is configured to enable engagement ofwaveguide 120 withultrasonic transducer 80, e.g., via a threaded engagement or other suitable engagement, such that mechanical motion produced byultrasonic transducer 80 is capable of being transmitted alongwaveguide 120 toblade 124 for treating tissue clamped betweenblade 124 and clamparm 102 or positionedadjacent blade 124. - The drive assembly (not shown) operably couples
movable handle 40 withclamp arm 102 such that actuation ofmovable handle 40 pivots clamparm 102 between the open and clamping positions. The activation assembly (not shown) may include a button or other suitable actuator enabling enable manual manipulation by a user. In some embodiments, the activation assembly includes a two-mode button wherein actuation to a first actuated position supplies energy toultrasonic transducer 80 corresponding to a “LOW” power mode, and wherein actuation to a second actuated position supplies energy toultrasonic transducer 80 corresponding to a “HIGH” power mode. - Continuing with reference to
FIGS. 1 and 2 ,fluid management assembly 200 is disposed withinhousing 20 and includes afluid pump 210, aninflow fluid assembly 220, and anoutflow fluid assembly 230.Inflow fluid assembly 220 includes ahollow needle 222 extending intointerior cavity 27 of fixedhandle portion 26 ofhousing 20 and defining asharp tip 223 therein, afirst conduit segment 224 configured to couplehollow needle 222 withfluid pump 210, and asecond conduit segment 226 extending fromfluid pump 210 throughproximal port 129 ofwaveguide 120 and distally throughinternal lumen 128 ofwaveguide 120 to a position adjacent but distally-spaced from the closed distal end ofinternal lumen 128.Outflow fluid assembly 230 includes ahollow needle 232 extending intointerior cavity 27 of fixedhandle portion 26 ofhousing 20 and defining asharp tip 233 therein, afirst conduit segment 234 configured to couplehollow needle 232 withfluid pump 210, and asecond conduit segment 236 extending fromfluid pump 210 intoproximal port 129 ofwaveguide 120. Unlikesecond conduit segment 226 ofinflow fluid assembly 220,second conduit segment 236 ofoutflow fluid assembly 230 does not extend distally throughwaveguide 120 intoblade 124. Rather,second conduit segment 236 terminates withininternal lumen 128 adjacent toproximal port 129 of waveguide or extends partially throughinternal lumen 128 ofwaveguide 120 without extending intoblade 124. However, other configurations of the inflow and outflow paths throughwaveguide 120 are also contemplated. -
Fluid pump 210 may be a piezoelectric microfluidic pump or other microfluidic pumps such as micro-peristaltic pumps, syringe pumps, etc. and may be connected to the generator (or other power source) throughcable 400 for poweringfluid pump 210 or may include a battery that powersfluid pump 210.Fluid pump 210 is configured to draw fluid intohollow needle 222 andfirst conduit segment 224 and pump the fluid throughsecond conduit segment 226 intointernal lumen 128 withinblade 124 ofwaveguide 120. Additionally or alternatively,fluid pump 210 is configured to draw fluid proximally fromblade 124 within the annular space defined betweensecond conduit segment 226 ofinflow fluid assembly 220 and the interior wall ofwaveguide 120 that definesinternal lumen 128, intosecond conduit segment 236 ofoutflow fluid assembly 230 and to pump the fluid throughfirst conduit segment 234 andneedle 232 ofoutflow fluid assembly 230. In either configuration,fluid management assembly 200 enables the circulation of fluid throughwaveguide 120 and, specifically,blade 124 ofwaveguide 120, to facilitate cooling ofblade 124. - With additional reference to
FIGS. 3 and 4 ,fluid reservoir 300 includes ahousing 310 defining a generallytubular body 320 having aninsertion end 322 and a trailingend 324 enclosing therein afluid chamber 330.Fluid reservoir 300 is pre-filled and stores therein a fluid, e.g., water, saline, etc. Aguide slot 340 is defined within and extends along a substantial portion of the length oftubular body 320, e.g., at least 50% of the length oftubular body 320 or, in embodiments, at least 75% of the length oftubular body 320. -
Insertion end 322 offluid reservoir 300 includes a sealedinflow port 342 and a sealedoutflow port 344. Inflow andoutflow shafts outflow ports fluid chamber 330. More specifically,inflow shaft 343 defines a relatively greater length and thus extends further throughfluid chamber 330 such that the open end ofinflow shaft 343 is positioned towards trailingend 324 offluid reservoir 300, whereasoutflow shaft 345 defines a relatively smaller length and thus does not extend as far throughfluid chamber 330 but, rather, the open end ofoutflow shaft 345 is positioned towardsinsertion end 322 offluid reservoir 300. By separating the open ends of inflow andoutflow shafts fluid chamber 330, the hotter, returned fluid fromoutflow shaft 345 is inhibited from being immediately drawn back out offluid reservoir 300 thoughinflow shaft 343. As an alternative or in addition to using different length inflow andoutflow shafts FIG. 4 ) may extend between inflow andoutflow shafts outflow shaft 345 from being immediately drawn back out offluid reservoir 300 thoughinflow shaft 343.Inflow shaft 343 may further include afilter 348 disposed at the open end thereof for filtering any fluid drawn intoinflow shaft 343. - Trailing
end 324 offluid reservoir 300 includes apassive heat exchanger 350 disposed thereon.Passive heat exchanger 350 may include, for example, a plurality of spaced-apartfins 352 extending outwardly from trailingend 324.Fins 352 are configured to increase surface area and, thus, heat exchange between the interior and exterior offluid reservoir 300 adjacent trailingend 324 offluid reservoir 300. Further, with the open end ofinflow shaft 343 positioned towards trailingend 324 offluid reservoir 300,passive heat exchanger 350 helps cool fluid being drawn intoinflow shaft 343. - Referring to
FIGS. 1-4 , in order to engagefluid reservoir 300 within ultrasonicsurgical instrument 10,fluid reservoir 300, lead byinsertion end 322 thereof is inserted into openlower end 28 of fixedhandle portion 26 ofhousing 20 such thatguide rail 30 is aligned withguide slot 340. Asfluid reservoir 300 is advanced further intointerior cavity 27 of fixedhandle portion 26,guide rail 30 is received withinguide slot 340 to guide insertion offluid reservoir 300. Upon full insertion offluid reservoir 300 intointerior cavity 27 of fixedhandle portion 26 ofhousing 20,sharp tips hollow needles outflow assemblies outflow ports hollow needles outflow shafts Fluid reservoir 300 may be maintained in engagement within fixedhandle portion 26 via friction-fitting and/or other suitable releasable mechanical locking engagement. - In the fully inserted position of
fluid reservoir 300,passive heat exchanger 350 remains external of fixedhandle portion 26, extending therefrom so as to facilitate heat exchange. Further, opposing portions ofbody 320 offluid reservoir 300 towards trailingend 324 thereof are exposed through cut-outs 29 of fixedhandle portion 26 to enable grasping, disengagement, and withdrawal offluid reservoir 300 from fixedhandle portion 26. - Continuing with reference to
FIGS. 1-4 , ultrasonicsurgical instrument 10 may be utilized to treat tissue clamped betweenblade 124 and clamparm 102 or positionedadjacent blade 124. During such use,blade 124 may reach temperatures greater than 200° C. Thus, in order to facilitate cooling ofblade 124 after use and/or in between usages, pump 210 offluid management system 200 is activated, e.g., manually via an activation button (not shown) onhousing 20 or remote therefrom or automatically after de-activation ofultrasonic transducer 80, to draw fluid fromfluid reservoir 300 intoinflow shaft 343,hollow needle 222,first conduit segment 224, and throughsecond conduit segment 226, which extends intointernal lumen 128 withinblade 124 ofwaveguide 120. The fluid then returns proximally within the annular space defined betweensecond conduit segment 226 and the interior wall ofwaveguide 120, intosecond conduit segment 236 ofoutflow fluid assembly 230,first conduit segment 234,needle 232, andoutflow shaft 345, ultimately returning tofluid reservoir 300.Heat exchange 350 and the distance between the open ends of inflow andoutflow shafts inflow shaft 343. - In order to remove
fluid reservoir 300 after use, the opposing portions ofbody 320 offluid reservoir 300 that are exposed through cut-outs 29 of fixedhandle portion 26 are grasped and pulled away fromhousing 20 to thereby disengage and withdrawfluid reservoir 300 from fixedhandle portion 26.Fluid reservoir 300 may be replaced with anew fluid reservoir 300 and may ultimately be discarded or reprocessed for subsequent use. - Turning now to
FIG. 5 , instead of a closed fluid circulation system such as detailed above, an open system may be provided wherein fluid is drawn fromfluid reservoir 300 and is output atend effector assembly 1100.End effector assembly 1100 is similar to and may include any of the features of end effector assembly 100 (FIG. 1 ), except as specifically contradicted below. -
End effector assembly 1100 is configured for use with ultrasonic surgical instrument 10 (FIG. 1 ) and includes aclamp arm 1102 andblade 1124 ofwaveguide 1120.Clamp arm 1102 is pivotable relative toblade 1124 between an open position and a clamping position for clamping tissue therebetween.Clamp arm 1102 includes aframe 1104 and atissue pad 1108 engaged withframe 1104.Frame 1104 and/ortissue pad 1108 define a plurality ofnozzles 1140 spaced-apart along a substantial portion, e.g., at least 50% or in embodiments at least 75%, of the length thereof and extending therethrough in communication with a longitudinally-extendinglumen 1150 defined throughframe 1104 and/ortissue pad 1108. Longitudinally-extendinglumen 1150, in turn, is coupled to aninflow conduit 1152 that extends fromclamp arm 1102 proximally throughshaft 50 and intohousing 20 of ultrasonic surgical instrument 10 (seeFIGS. 1 and 2 ).Inflow conduit 1152 functions as thesecond conduit segment 226 of the inflow fluid assembly 220 (FIG. 2 ) and is configured to couple tofluid reservoir 300 similarly as detailed above with respect to inflow fluid assembly 220 (FIG. 2 ). However, asend effector assembly 1100 provides an open-loop configuration, no outflow fluid assembly or outflow port influid reservoir 300 need be provided (although such could be provided for use with both closed-loop and open-loop configurations, wherein the outflow portions are simply not used when an open-loop configuration is provided). Rather, in use, fluid is drawn from fluid reservoir 300 (FIG. 2 ) intoinflow conduit 1152 and is pumped distally throughinflow conduit 1152, ultimately spraying out fromnozzles 1140 to coolblade 1124 along a substantial portion of the length ofblade 1124. - While several embodiments of the disclosure have been shown in the drawings and described hereinabove, it is not intended that the disclosure be limited thereto, as it is intended that the disclosure be as broad in scope as the art will allow and that the specification be read likewise. Therefore, the above description should not be construed as limiting, but merely as exemplifications of particular embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the claims appended hereto.
Claims (15)
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US17/140,233 US20210121196A1 (en) | 2018-02-13 | 2021-01-04 | Removable fluid reservoir and ultrasonic surgical instrument including the same |
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US10881424B2 (en) | 2021-01-05 |
JP6755348B2 (en) | 2020-09-16 |
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EP3524187B1 (en) | 2020-10-21 |
EP3524187A1 (en) | 2019-08-14 |
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