US20210052293A1 - Hemostat-style ultrasonic surgical instrument with clamp force-limiting feature - Google Patents
Hemostat-style ultrasonic surgical instrument with clamp force-limiting feature Download PDFInfo
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- US20210052293A1 US20210052293A1 US17/092,893 US202017092893A US2021052293A1 US 20210052293 A1 US20210052293 A1 US 20210052293A1 US 202017092893 A US202017092893 A US 202017092893A US 2021052293 A1 US2021052293 A1 US 2021052293A1
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- 230000033001 locomotion Effects 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 230000004913 activation Effects 0.000 claims description 11
- 239000012636 effector Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- -1 e.g. Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000023597 hemostasis Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
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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
- 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
- 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
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/2812—Surgical forceps with a single pivotal connection
- A61B17/2816—Pivots
-
- 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
- A61B2017/320082—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic for incising tissue
-
- 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
-
- 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
- A61B2017/320095—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw with sealing or cauterizing means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/032—Automatic limiting or abutting means, e.g. for safety pressure limiting, e.g. hydrostatic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/033—Abutting means, stops, e.g. abutting on tissue or skin
- A61B2090/034—Abutting means, stops, e.g. abutting on tissue or skin abutting on parts of the device itself
Definitions
- the present disclosure relates to ultrasonic surgical instruments and, more particularly, to a hemostat-style ultrasonic surgical instrument configured to limit clamping force to a maximum clamping force.
- Ultrasonic surgical instruments utilize ultrasonic energy, i.e., ultrasonic vibrations, to treat tissue. More specifically, ultrasonic surgical instruments utilize mechanical vibration energy transmitted at ultrasonic frequencies to coagulate, cauterize, fuse, seal, cut, desiccate, and/or fulgurate tissue to effect hemostasis.
- Ultrasonic surgical instruments typically employ a transducer coupled to a handle of the ultrasonic surgical instrument and configured to produce ultrasonic energy for transmission along a waveguide to an end effector of the ultrasonic surgical instrument that is designed to treat tissue with the ultrasonic energy.
- the transducer may be driven by an ultrasonic generator that is on-board, e.g., on or within the handle of the ultrasonic surgical instrument, or remotely disposed, e.g., as a set-top box connected to the ultrasonic surgical instrument via a surgical cable.
- the end effector of the ultrasonic surgical instrument may include a blade that receives the ultrasonic energy from the waveguide for application to tissue and a jaw member configured to clamp tissue between the blade and the jaw member to facilitate treatment thereof.
- distal refers to the portion that is described which is further from a user
- proximal refers to the portion that is described which is closer to a user
- an ultrasonic surgical instrument including a first shaft member, a jaw member extending distally from the first shaft member, a second shaft member, an ultrasonic blade extending distally from the second shaft member and positioned to oppose the jaw member, and a force-limiting hinge assembly operably coupling the first and second shaft members with one another such that movement of the first and second shaft members relative to one another between a spaced-apart position and an approximated position moves the jaw member and the ultrasonic blade relative to one another between an open position and a clamping position for clamping tissue therebetween.
- the force-limiting hinge assembly includes a hinge arm fixedly engaged to one of the first or second shaft members at a first end thereof and pivotably coupled to the other of the first or second shaft members at a second end thereof.
- the hinge arm is configured to flex to regulate a clamping force applied to tissue clamped between the jaw member and the ultrasonic blade.
- the first end of the hinge arm is fixedly engaged with the second shaft member and the second end of the hinge arm is pivotably coupled to the first shaft member.
- the first end of the hinge arm is monolithically formed with the one of the first or second shaft members.
- a pivot pin pivotably couples the second end of the hinge arm with the other of the first or second shaft members.
- the hinge arm is resiliently flexible.
- the jaw member includes a structural body and a tissue pad supported on the structural body.
- a transducer and waveguide assembly is supported by the second shaft member.
- the transducer and waveguide assembly includes an ultrasonic transducer and an ultrasonic waveguide coupled to and extending distally from the ultrasonic transducer.
- the ultrasonic blade is defined at a distal end of the ultrasonic waveguide.
- the transducer and waveguide assembly is removable from the second shaft member.
- each of the first and second shaft members includes a handle disposed towards a proximal end thereof.
- the handles are configured to facilitate movement of the first and second shaft members relative to one another between the spaced-apart position and the approximated position.
- an activation button is disposed on the second shaft member.
- the activation button is selectively activatable to supply ultrasonic energy to the ultrasonic blade.
- the hinge arm regulates the clamping force applied to tissue clamped between the jaw member and the ultrasonic blade by flexing to inhibit the clamping force from exceeding a maximum clamping force.
- Another ultrasonic surgical instrument includes a first shaft member including a shaft portion and a jaw member extending distally from the shaft portion, a second shaft member supporting a transducer and waveguide assembly, and a force-limiting hinge assembly.
- the transducer and waveguide assembly includes an ultrasonic transducer and an ultrasonic waveguide coupled to and extending distally from the ultrasonic transducer.
- An ultrasonic blade is defined at a distal end of the ultrasonic waveguide and positioned to oppose the jaw member.
- the force-limiting hinge assembly operably couples the first and second shaft members with one another such that movement of the first and second shaft members relative to one another between a spaced-apart position and an approximated position moves the jaw member and the ultrasonic blade relative to one another between an open position and a clamping position for clamping tissue therebetween.
- the force-limiting hinge assembly includes a hinge arm fixedly engaged to the second shaft member at a first end thereof and pivotably coupled to the first shaft member at a second end thereof.
- the hinge arm is configured to flex to regulate a clamping force applied to tissue clamped between the jaw member and the ultrasonic blade.
- the ultrasonic surgical instrument may further include any of the other aspects and/or features detailed hereinabove or otherwise herein.
- FIG. 1 is a side view of a hemostat-style ultrasonic surgical instrument provided in accordance with the present disclosure
- FIG. 2 is an enlarged, side view of a transducer and waveguide assembly of the ultrasonic surgical instrument of FIG. 1 ;
- FIG. 3 is an enlarged, side view of the area of detail indicated as “ 3 ” in FIG. 1 , with the transducer and waveguide assembly removed.
- Ultrasonic surgical instrument 10 is configured to operably couple to an ultrasonic surgical generator (not shown) and generally includes two elongated shaft members 110 a, 110 b, an activation button 140 , an end effector assembly 160 , a force-limiting hinge assembly 180 , and a transducer and waveguide assembly 200 .
- Each shaft member 110 a, 110 b includes a handle 111 a, 111 b disposed towards the proximal end 112 a, 112 b thereof. Each handle 111 a, 111 b defines a finger hole 113 a, 113 b therethrough for receiving a finger of the user.
- One of the shaft members, e.g., shaft member 110 a includes a jaw member 164 of end effector assembly 160 extending from the distal end 114 a thereof.
- the other shaft member, e.g., shaft member 110 b defines an elongated body 115 configured to receive transducer and waveguide assembly 200 therethrough. Elongated body 115 mounts activation button 140 thereon.
- Transducer and waveguide assembly 200 may be releasably insertable through elongated body 115 into engagement therewith, or may be permanently affixed within elongated body 115 .
- elongated body 115 is configured to receive and engage transducer and waveguide assembly 200 therein such that blade 162 of transducer and waveguide assembly 200 extends distally from distal end 114 b of elongated body 115 and is positioned to oppose jaw member 164 of shaft member 110 a.
- Shaft members 110 a, 110 b are coupled to one another towards the distal ends 114 a, 114 b, respectively, thereof via force-limiting hinge assembly 180 , as detailed below, to enable jaw member 164 to pivot relative to blade 162 to clamp tissue therebetween.
- transducer and waveguide assembly 200 includes a housing 210 , an ultrasonic transducer 212 , e.g., a piezoelectric stack, disposed within housing 210 , an ultrasonic horn 214 disposed within housing 210 and coupled to ultrasonic transducer 212 , and an ultrasonic waveguide 220 coupled to ultrasonic horn 214 , e.g., via a releasable threaded engagement, within housing 210 and extending distally from housing 210 to define an ultrasonic blade 162 of end effector assembly 160 at the distal of ultrasonic waveguide 220 , distally-spaced from housing 210 .
- an ultrasonic transducer 212 e.g., a piezoelectric stack
- ultrasonic horn 214 disposed within housing 210 and coupled to ultrasonic transducer 212
- an ultrasonic waveguide 220 coupled to ultrasonic horn 214 , e.g., via a rele
- Transducer and waveguide assembly 200 further includes a cable 240 extending proximally from housing 210 to enable connection of transducer and waveguide assembly 200 to an ultrasonic generator (not shown).
- cable 240 may extend from another suitable location on ultrasonic surgical instrument 10 , e.g., handle 111 b.
- Piezoelectric stack 214 includes a plurality of piezoelectric elements stacked with electrodes disposed therebetween and is configured to convert electrical energy provided by the ultrasonic generator (not shown) and supplied thereto via wires 242 extending through cable 240 ( FIG. 1 ) into mechanical energy that is transmitted to ultrasonic waveguide 220 via ultrasonic horn 214 .
- Ultrasonic waveguide 220 is configured to transmit the mechanical energy to blade 162 at the distal end of ultrasonic waveguide 220 such that blade 162 oscillates at ultrasonic frequencies.
- transducer and waveguide assembly 200 may further include an external contact 250 disposed on housing 210 and electrically coupled to a wire 252 extending through housing 210 and cable 240 to the ultrasonic generator (not shown).
- Contact 250 is configured to mate with a corresponding contact 142 disposed within elongated body 115 of shaft member 110 b and electrically coupled to activation button 140 of ultrasonic surgical instrument 10 to enable the selective activation of ultrasonic surgical instrument 10 .
- Activation button 140 may be selectively activatable in a first position and a second position to supply electrical energy from the ultrasonic generator to transducer and waveguide assembly 200 for operating ultrasonic instrument 10 in a low-power mode of operation and a high-power mode of operation, respectively.
- ultrasonic waveguide 220 extends distally from housing 210 and defines blade 162 of end effector assembly 160 at the distal end thereof. Due to the coupling of shaft members 110 a, 110 b towards the distal ends 114 a, 114 b, respectively, thereof, via force-limiting hinge assembly 180 , handles 111 a, 111 b may be moved relative to one another to thereby pivot jaw member 164 relative to blade 162 between an open position, wherein jaw member 164 is spaced-apart from blade 162 , and a closed position, wherein jaw member 164 is approximated relative to blade 162 in juxtaposed alignment therewith for clamping tissue therebetween.
- End effector assembly 160 includes blade 162 and jaw member 164 .
- Blade 162 may define a linear configuration or a curved configuration curved in any direction relative to jaw member 164 , for example, such that the distal tip of blade 162 is curved towards jaw member 164 , away from jaw member 164 , or laterally (in either direction) relative to jaw member 164 .
- Blade 162 may further define a multi-curve configuration wherein blade 162 includes multiple curves and/or is curved in multiple directions.
- Jaw member 164 includes a substantially rigid (within material and manufacturing tolerances) structural jaw body 165 which may be monolithically formed with or otherwise engaged to the distal end 114 a of shaft member 110 a. Jaw member 164 further includes a tissue pad 166 supported on structural jaw body 165 and positioned to oppose blade 162 .
- Tissue pad 166 is formed at least partially from a compliant material, e.g., PTFE, and serves to facilitate clamping tissue and maintaining the clamp on tissue when blade 162 is activated. Tissue pad 166 also protects blade 162 , structural jaw body 165 , and surroundings from damage by inhibiting contact between blade 162 and structural jaw body 165 .
- first and second shaft members 110 a, 110 b are coupled to one another towards the distal ends 114 a, 114 b, respectively, thereof via force-limiting hinge assembly 180 .
- Force-limiting hinge assembly 180 includes a pivot pin 182 and a living hinge arm 184 .
- Living hinge arm 184 is configured to provide a force-limiting feature whereby the clamping force applied to tissue clamped between blade 162 and jaw member 164 is limited to a maximum clamping force.
- living hinge arm 184 The material forming living hinge arm 184 , the length of living hinge arm 184 , the shape of living hinge arm 184 , the thickness of living hinge arm 184 , and/or other factors are tailored to provide a living hinge arm 184 that acts as a constant-force spring to limit the clamping force to a desired maximum clamping force, as detailed below.
- Living hinge arm 184 includes a first end portion 185 and a second end portion 187 .
- First end portion 185 of living hinge arm 184 is fixed, e.g., monolithically formed with or otherwise engaged, with one of the shaft members, e.g., elongated body 115 of second shaft member 110 b, while second end portion 187 of living hinge arm 184 is pivotably coupled to the other of the shaft members, e.g., first shaft member 110 a, via pivot pin 182 .
- Second end portion 187 may be disposed on one side of first shaft member 110 a or may be received within a slot (not explicitly shown) defined within first shaft member 110 a such that a pivot aperture 188 defined through second end portion 187 of living hinge arm 184 is aligned with a pivot aperture 119 defined through first shaft member 110 a.
- Pivot pin 182 extends through the aligned apertures 119 , 188 to pivotably couple second end portion 187 of living hinge arm 184 with first shaft member 110 a. In this manner, first shaft member 110 a is movable relative to second shaft member 110 b about pivot pin 182 .
- jaw member 164 in response to movement of handles 111 a, 111 b of shaft members 110 a, 110 b, respectively, towards one another, jaw member 164 is pivoted relative to blade 162 and about pivot pin 182 from an open position, wherein jaw member 164 is spaced-apart from blade 162 , to a closed position, wherein jaw member 164 is approximated relative to blade 162 in juxtaposed alignment therewith for clamping tissue therebetween.
- the pivot point e.g., the location of pivot pin 182
- the pivot point is spaced-apart from second shaft member 110 b.
- first shaft member 110 a is also movable relative to second shaft member 110 b, independent of the pivoting thereof about pivot pin 182 . More specifically, during initial movement of handles 111 a, 111 b of shaft members 110 a, 110 b, respectively, towards one another to clamp tissue between jaw member 164 and blade 162 , the relative motion between shaft members 110 a, 110 b is the pivoting thereof about pivot pin 182 .
- blade 162 may be activated, e.g., via depression of activation button 140 , to supply ultrasonic energy from transducer 212 , along waveguide 220 , to blade 162 .
- the ultrasonic energy provided at blade 162 is used to treat, e.g., coagulate, cauterize, fuse, seal, cut, desiccate, fulgurate, etc., tissue clamped between jaw member 164 and blade 162 .
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Abstract
Description
- This application is a continuation of U.S. patent application Ser. No. 16/006,954, filed on Jun. 13, 2018, the entire contents of which are hereby incorporated herein by reference.
- The present disclosure relates to ultrasonic surgical instruments and, more particularly, to a hemostat-style ultrasonic surgical instrument configured to limit clamping force to a maximum clamping force.
- Ultrasonic surgical instruments utilize ultrasonic energy, i.e., ultrasonic vibrations, to treat tissue. More specifically, ultrasonic surgical instruments utilize mechanical vibration energy transmitted at ultrasonic frequencies to coagulate, cauterize, fuse, seal, cut, desiccate, and/or fulgurate tissue to effect hemostasis.
- Ultrasonic surgical instruments typically employ a transducer coupled to a handle of the ultrasonic surgical instrument and configured to produce ultrasonic energy for transmission along a waveguide to an end effector of the ultrasonic surgical instrument that is designed to treat tissue with the ultrasonic energy. The transducer may be driven by an ultrasonic generator that is on-board, e.g., on or within the handle of the ultrasonic surgical instrument, or remotely disposed, e.g., as a set-top box connected to the ultrasonic surgical instrument via a surgical cable. The end effector of the ultrasonic surgical instrument may include a blade that receives the ultrasonic energy from the waveguide for application to tissue and a jaw member configured to clamp tissue between the blade and the jaw member to facilitate treatment thereof.
- As used herein, the term “distal” refers to the portion that is described which is further from a user, while the term “proximal” refers to the portion that is described which is closer to a user. Further, any or all of the aspects described herein, to the extent consistent, 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 an ultrasonic surgical instrument including a first shaft member, a jaw member extending distally from the first shaft member, a second shaft member, an ultrasonic blade extending distally from the second shaft member and positioned to oppose the jaw member, and a force-limiting hinge assembly operably coupling the first and second shaft members with one another such that movement of the first and second shaft members relative to one another between a spaced-apart position and an approximated position moves the jaw member and the ultrasonic blade relative to one another between an open position and a clamping position for clamping tissue therebetween. The force-limiting hinge assembly includes a hinge arm fixedly engaged to one of the first or second shaft members at a first end thereof and pivotably coupled to the other of the first or second shaft members at a second end thereof. The hinge arm is configured to flex to regulate a clamping force applied to tissue clamped between the jaw member and the ultrasonic blade.
- In an aspect of the present disclosure, the first end of the hinge arm is fixedly engaged with the second shaft member and the second end of the hinge arm is pivotably coupled to the first shaft member.
- In another aspect of the present disclosure, the first end of the hinge arm is monolithically formed with the one of the first or second shaft members.
- In still another aspect of the present disclosure, a pivot pin pivotably couples the second end of the hinge arm with the other of the first or second shaft members.
- In yet another aspect of the present disclosure, the hinge arm is resiliently flexible.
- In still yet another aspect of the present disclosure, the jaw member includes a structural body and a tissue pad supported on the structural body.
- In another aspect of the present disclosure, a transducer and waveguide assembly is supported by the second shaft member. The transducer and waveguide assembly includes an ultrasonic transducer and an ultrasonic waveguide coupled to and extending distally from the ultrasonic transducer. The ultrasonic blade is defined at a distal end of the ultrasonic waveguide.
- In another aspect of the present disclosure, the transducer and waveguide assembly is removable from the second shaft member.
- In yet another aspect of the present disclosure, each of the first and second shaft members includes a handle disposed towards a proximal end thereof. The handles are configured to facilitate movement of the first and second shaft members relative to one another between the spaced-apart position and the approximated position.
- In still another aspect of the present disclosure, an activation button is disposed on the second shaft member. The activation button is selectively activatable to supply ultrasonic energy to the ultrasonic blade.
- In still yet another aspect of the present disclosure, the hinge arm regulates the clamping force applied to tissue clamped between the jaw member and the ultrasonic blade by flexing to inhibit the clamping force from exceeding a maximum clamping force.
- Another ultrasonic surgical instrument provided in accordance with aspects of the present disclosure includes a first shaft member including a shaft portion and a jaw member extending distally from the shaft portion, a second shaft member supporting a transducer and waveguide assembly, and a force-limiting hinge assembly. The transducer and waveguide assembly includes an ultrasonic transducer and an ultrasonic waveguide coupled to and extending distally from the ultrasonic transducer. An ultrasonic blade is defined at a distal end of the ultrasonic waveguide and positioned to oppose the jaw member. The force-limiting hinge assembly operably couples the first and second shaft members with one another such that movement of the first and second shaft members relative to one another between a spaced-apart position and an approximated position moves the jaw member and the ultrasonic blade relative to one another between an open position and a clamping position for clamping tissue therebetween. The force-limiting hinge assembly includes a hinge arm fixedly engaged to the second shaft member at a first end thereof and pivotably coupled to the first shaft member at a second end thereof. The hinge arm is configured to flex to regulate a clamping force applied to tissue clamped between the jaw member and the ultrasonic blade. The ultrasonic surgical instrument may further include any of the other aspects and/or features detailed hereinabove or otherwise herein.
- The above and other aspects and features of the present disclosure will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings wherein like reference numerals identify similar or identical elements and:
-
FIG. 1 is a side view of a hemostat-style ultrasonic surgical instrument provided in accordance with the present disclosure; -
FIG. 2 is an enlarged, side view of a transducer and waveguide assembly of the ultrasonic surgical instrument ofFIG. 1 ; and -
FIG. 3 is an enlarged, side view of the area of detail indicated as “3” inFIG. 1 , with the transducer and waveguide assembly removed. - Referring to
FIG. 1 , a hemostat-style ultrasonic surgical instrument provided in accordance with the present disclosure is shown generally identified byreference numeral 10. Ultrasonicsurgical instrument 10 is configured to operably couple to an ultrasonic surgical generator (not shown) and generally includes twoelongated shaft members activation button 140, anend effector assembly 160, a force-limiting hinge assembly 180, and a transducer andwaveguide assembly 200. - Each
shaft member handle proximal end handle finger hole shaft member 110 a, includes ajaw member 164 ofend effector assembly 160 extending from thedistal end 114 a thereof. The other shaft member, e.g.,shaft member 110 b, defines anelongated body 115 configured to receive transducer andwaveguide assembly 200 therethrough. Elongatedbody 115mounts activation button 140 thereon. Transducer andwaveguide assembly 200 may be releasably insertable throughelongated body 115 into engagement therewith, or may be permanently affixed withinelongated body 115. In either configuration,elongated body 115 is configured to receive and engage transducer andwaveguide assembly 200 therein such thatblade 162 of transducer andwaveguide assembly 200 extends distally fromdistal end 114 b ofelongated body 115 and is positioned to oppose jawmember 164 ofshaft member 110 a.Shaft members distal ends hinge assembly 180, as detailed below, to enablejaw member 164 to pivot relative toblade 162 to clamp tissue therebetween. - With reference to
FIG. 2 , transducer andwaveguide assembly 200 includes ahousing 210, anultrasonic transducer 212, e.g., a piezoelectric stack, disposed withinhousing 210, anultrasonic horn 214 disposed withinhousing 210 and coupled toultrasonic transducer 212, and anultrasonic waveguide 220 coupled toultrasonic horn 214, e.g., via a releasable threaded engagement, withinhousing 210 and extending distally fromhousing 210 to define anultrasonic blade 162 ofend effector assembly 160 at the distal ofultrasonic waveguide 220, distally-spaced fromhousing 210. Transducer andwaveguide assembly 200 further includes acable 240 extending proximally fromhousing 210 to enable connection of transducer andwaveguide assembly 200 to an ultrasonic generator (not shown). Alternatively,cable 240 may extend from another suitable location on ultrasonicsurgical instrument 10, e.g., handle 111 b. -
Piezoelectric stack 214 includes a plurality of piezoelectric elements stacked with electrodes disposed therebetween and is configured to convert electrical energy provided by the ultrasonic generator (not shown) and supplied thereto viawires 242 extending through cable 240 (FIG. 1 ) into mechanical energy that is transmitted toultrasonic waveguide 220 viaultrasonic horn 214.Ultrasonic waveguide 220, in turn, is configured to transmit the mechanical energy toblade 162 at the distal end ofultrasonic waveguide 220 such thatblade 162 oscillates at ultrasonic frequencies. - Referring also to
FIG. 1 , transducer andwaveguide assembly 200 may further include anexternal contact 250 disposed onhousing 210 and electrically coupled to awire 252 extending throughhousing 210 andcable 240 to the ultrasonic generator (not shown).Contact 250 is configured to mate with acorresponding contact 142 disposed withinelongated body 115 ofshaft member 110 b and electrically coupled toactivation button 140 of ultrasonicsurgical instrument 10 to enable the selective activation of ultrasonicsurgical instrument 10.Activation button 140, more specifically, may be selectively activatable in a first position and a second position to supply electrical energy from the ultrasonic generator to transducer andwaveguide assembly 200 for operatingultrasonic instrument 10 in a low-power mode of operation and a high-power mode of operation, respectively. - Continuing with reference to
FIGS. 1 and 2 ,ultrasonic waveguide 220, as noted above, extends distally fromhousing 210 and definesblade 162 ofend effector assembly 160 at the distal end thereof. Due to the coupling ofshaft members distal ends hinge assembly 180, handles 111 a, 111 b may be moved relative to one another to thereby pivotjaw member 164 relative toblade 162 between an open position, whereinjaw member 164 is spaced-apart fromblade 162, and a closed position, whereinjaw member 164 is approximated relative toblade 162 in juxtaposed alignment therewith for clamping tissue therebetween. -
End effector assembly 160 includesblade 162 andjaw member 164.Blade 162 may define a linear configuration or a curved configuration curved in any direction relative tojaw member 164, for example, such that the distal tip ofblade 162 is curved towardsjaw member 164, away fromjaw member 164, or laterally (in either direction) relative tojaw member 164.Blade 162 may further define a multi-curve configuration whereinblade 162 includes multiple curves and/or is curved in multiple directions. -
Jaw member 164 includes a substantially rigid (within material and manufacturing tolerances)structural jaw body 165 which may be monolithically formed with or otherwise engaged to thedistal end 114 a ofshaft member 110 a.jaw member 164 further includes atissue pad 166 supported onstructural jaw body 165 and positioned to opposeblade 162.Tissue pad 166 is formed at least partially from a compliant material, e.g., PTFE, and serves to facilitate clamping tissue and maintaining the clamp on tissue whenblade 162 is activated.Tissue pad 166 also protectsblade 162,structural jaw body 165, and surroundings from damage by inhibiting contact betweenblade 162 andstructural jaw body 165. - Referring to
FIG. 3 , in conjunction withFIG. 1 , as noted above, first andsecond shaft members hinge assembly 180. Force-limitinghinge assembly 180 includes apivot pin 182 and aliving hinge arm 184. Livinghinge arm 184, as detailed below, is configured to provide a force-limiting feature whereby the clamping force applied to tissue clamped betweenblade 162 andjaw member 164 is limited to a maximum clamping force. The material formingliving hinge arm 184, the length of livinghinge arm 184, the shape of livinghinge arm 184, the thickness of livinghinge arm 184, and/or other factors are tailored to provide aliving hinge arm 184 that acts as a constant-force spring to limit the clamping force to a desired maximum clamping force, as detailed below. - Living
hinge arm 184 includes afirst end portion 185 and asecond end portion 187.First end portion 185 of livinghinge arm 184 is fixed, e.g., monolithically formed with or otherwise engaged, with one of the shaft members, e.g.,elongated body 115 ofsecond shaft member 110 b, whilesecond end portion 187 of livinghinge arm 184 is pivotably coupled to the other of the shaft members, e.g.,first shaft member 110 a, viapivot pin 182.Second end portion 187, more specifically, may be disposed on one side offirst shaft member 110 a or may be received within a slot (not explicitly shown) defined withinfirst shaft member 110 a such that apivot aperture 188 defined throughsecond end portion 187 of livinghinge arm 184 is aligned with apivot aperture 119 defined throughfirst shaft member 110 a.Pivot pin 182 extends through the alignedapertures second end portion 187 of livinghinge arm 184 withfirst shaft member 110 a. In this manner,first shaft member 110 a is movable relative tosecond shaft member 110 b aboutpivot pin 182. More specifically, in response to movement ofhandles shaft members jaw member 164 is pivoted relative toblade 162 and aboutpivot pin 182 from an open position, whereinjaw member 164 is spaced-apart fromblade 162, to a closed position, whereinjaw member 164 is approximated relative toblade 162 in juxtaposed alignment therewith for clamping tissue therebetween. Notably, although the pivot point, e.g., the location ofpivot pin 182, is disposed alongfirst shaft member 110 a, the pivot point is spaced-apart fromsecond shaft member 110 b. - In addition to the pivotable movement of
first shaft member 110 a relative tosecond shaft member 110 b aboutpivot pin 182,first shaft member 110 a is also movable relative tosecond shaft member 110 b, independent of the pivoting thereof aboutpivot pin 182. More specifically, during initial movement ofhandles shaft members jaw member 164 andblade 162, the relative motion betweenshaft members pivot pin 182. However, upon sufficient pivoting ofshaft members jaw member 164 is pivoted sufficiently towardsblade 162 to clamp tissue therebetween under the maximum clamping force, further urging ofhandles shaft members hinge arm 184 such thatsecond end portion 187 of livinghinge arm 184 is moved relative tofirst end portion 185 thereof, thereby allowingfirst shaft member 110 a to move further towardssecond shaft member 110 b withoutjaw member 164 pivoting further towardsblade 162. In this manner, the force-limiting feature is implemented whereby further movement ofhandles jaw member 164 andblade 162. - In use, with tissue clamped between
jaw member 164 andblade 162 under the maximum clamping force as detailed above,blade 162 may be activated, e.g., via depression ofactivation button 140, to supply ultrasonic energy fromtransducer 212, alongwaveguide 220, toblade 162. The ultrasonic energy provided atblade 162 is used to treat, e.g., coagulate, cauterize, fuse, seal, cut, desiccate, fulgurate, etc., tissue clamped betweenjaw member 164 andblade 162. By ensuring the clamping force does not exceed the maximum clamping force, a consistent clamping force can be achieved and, as a result, more reliable tissue treatment can be effected. - While several embodiments of the disclosure have been detailed above and are shown in the drawings, 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 and accompanying drawings 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 (20)
Priority Applications (1)
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US17/092,893 US20210052293A1 (en) | 2018-06-13 | 2020-11-09 | Hemostat-style ultrasonic surgical instrument with clamp force-limiting feature |
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US16/006,954 US10828060B2 (en) | 2018-06-13 | 2018-06-13 | Hemostat-style ultrasonic surgical instrument with clamp force-limiting feature |
US17/092,893 US20210052293A1 (en) | 2018-06-13 | 2020-11-09 | Hemostat-style ultrasonic surgical instrument with clamp force-limiting feature |
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US16/006,954 Continuation US10828060B2 (en) | 2018-06-13 | 2018-06-13 | Hemostat-style ultrasonic surgical instrument with clamp force-limiting feature |
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US20210052293A1 true US20210052293A1 (en) | 2021-02-25 |
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US16/006,954 Active 2038-11-18 US10828060B2 (en) | 2018-06-13 | 2018-06-13 | Hemostat-style ultrasonic surgical instrument with clamp force-limiting feature |
US17/092,893 Abandoned US20210052293A1 (en) | 2018-06-13 | 2020-11-09 | Hemostat-style ultrasonic surgical instrument with clamp force-limiting feature |
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US16/006,954 Active 2038-11-18 US10828060B2 (en) | 2018-06-13 | 2018-06-13 | Hemostat-style ultrasonic surgical instrument with clamp force-limiting feature |
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US (2) | US10828060B2 (en) |
EP (1) | EP3581124A1 (en) |
JP (1) | JP6726786B2 (en) |
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AU (1) | AU2019202722B2 (en) |
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US12035935B2 (en) | 2020-10-22 | 2024-07-16 | Cilag Gmbh International | Surgical instrument and carrier kart supporting ultrasonic transducer |
US11931059B2 (en) * | 2020-10-22 | 2024-03-19 | Cilag Gmbh International | Surgical instrument with a carrier kart and various communication cable arrangements |
US11998228B2 (en) | 2020-10-22 | 2024-06-04 | Cilag Gmbh International | Ultrasonic surgical instrument with a carrier kart and reusable stage |
US12016587B2 (en) | 2020-10-22 | 2024-06-25 | Cilag Gmbh International | Carrier kart and jaw closure of an ultrasonic surgical instrument |
KR102595999B1 (en) * | 2021-02-18 | 2023-10-31 | (주)나노맥 | A Microwave Type of a Surgical Tool |
GB2605979A (en) * | 2021-04-19 | 2022-10-26 | Gyrus Medical Ltd | Electrosurgical instrument |
KR102660870B1 (en) * | 2021-10-27 | 2024-04-25 | (주)나노맥 | A Surgical Tool with an Electrical Incision Integrated with a Ultrasound Cutting |
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2018
- 2018-06-13 US US16/006,954 patent/US10828060B2/en active Active
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US20110106073A1 (en) * | 2009-10-30 | 2011-05-05 | Tyco Healthcare Group Lp | Jaw Roll Joint |
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US10828060B2 (en) | 2020-11-10 |
JP6726786B2 (en) | 2020-07-22 |
AU2019202722A1 (en) | 2020-01-16 |
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EP3581124A1 (en) | 2019-12-18 |
JP2019213849A (en) | 2019-12-19 |
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