CA2510871A1 - Surgical stapling instrument incorporating a multistroke firing mechanism having a rotary transmission - Google Patents

Surgical stapling instrument incorporating a multistroke firing mechanism having a rotary transmission Download PDF

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Publication number
CA2510871A1
CA2510871A1 CA002510871A CA2510871A CA2510871A1 CA 2510871 A1 CA2510871 A1 CA 2510871A1 CA 002510871 A CA002510871 A CA 002510871A CA 2510871 A CA2510871 A CA 2510871A CA 2510871 A1 CA2510871 A1 CA 2510871A1
Authority
CA
Canada
Prior art keywords
firing
surgical instrument
rack
motion
closure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002510871A
Other languages
French (fr)
Other versions
CA2510871C (en
Inventor
Frederick E. Shelton, Iv
Michael Earl Setser
Douglas B. Hoffman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ethicon Endo Surgery Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2510871A1 publication Critical patent/CA2510871A1/en
Application granted granted Critical
Publication of CA2510871C publication Critical patent/CA2510871C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B17/115—Staplers for performing anastomosis in a single operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B17/2909—Handles
    • A61B2017/2912—Handles transmission of forces to actuating rod or piston
    • A61B2017/2913—Handles transmission of forces to actuating rod or piston cams or guiding means
    • 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
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B17/2909—Handles
    • A61B2017/2912—Handles transmission of forces to actuating rod or piston
    • A61B2017/2923—Toothed members, e.g. rack and pinion

Abstract

A surgical stapling and severing instrument particularly suited to endoscopic procedures incorporates a handle that produces separate closing and firing motions to actuate an end effector. In particular, the handle produces multiple firing strokes in order to reduce the required amount of force required to fire (i.e., staple and sever) the end effector.

Claims (23)

1. A surgical instrument, comprising:
an end effector operably configured to respond to a firing motion;
a shaft attached to the end effector and including an elongate firing member coupled to the end effector far movement to longitudinally transmit the firing motion;
and a handle proximally attached to the shaft, comprising:
a cam disk including a plurality of cam lobes about at least a portion of a circumference, a firing actuator repeatably moveable in a firing direction and a return direction;
a wedge coupled to the firing actuator and operably configured to sequentially engage a respective one of the plurality of cam lobes of the cam disk during each movement of the firing actuator in the firing direction;
a rack connected to the firing member of the shaft and coupled by gear engagement with the cam disk to transmit an intermittent rotation of the cam disk as the longitudinal firing motion.
2. The surgical instrument of claim 1, wherein the rack is coupled by gear engagement with the cam disk comprised of a gear train.
3. The surgical instrument of claim 2, wherein the gear train comprises a gear reduction assembly relating the intermittent rotation of the cam disk to an increased longitudinal motion of the rack.
4. The surgical instrument of claim 1, further comprising an anti-backup mechanism operably configured to prevent retraction of the rack between firing strokes of the firing trigger.
5. The surgical instrument of claim 1, wherein the end effector comprises a pair of opposing jaws responsive to a closure motion and a firing bar responsive to the firing member, the shaft operably configured to transmit the closure motion through a closure member to the end effector, the handle further comprising a closure mechanism operably configured to produce the closure motion.
6. The surgical instrument of claim 5, further comprising a firing lockout mechanism responsive to the closure mechanism being unclosed to prevent movement of the rack.
7. The surgical instrument of claim 6, wherein the firing lockout mechanism is operably configured to respond to the rack having been at least partially fired to block opening movement of the closure mechanism.
8. The surgical instrument of claim 7, wherein the handle further comprises a clamp lock responsive to closure motion of the closure mechanism to lock the closure mechanism.
9. The surgical instrument of claim 5, wherein the handle further comprises:
a firing lockout mechanism responsive to the closure mechanism being unclosed to prevent movement of the rack and responsive to the rack being at least partially fired to prevent opening of the closure mechanism;
a clamp lock mechanism responsive to closure motion of the closure mechanism to lock the closure mechanism;
an anti-backup mechanism operably configured to prevent retraction of the rack between firing strokes of the firing trigger; and a release mechanism operably configured to unlock the anti-backup mechanism.
10. The surgical instrument of claim 9, wherein the release mechanism is further operably configured to unlock the clamp lock mechanism.
11. The surgical instrument of claim 5, wherein the end effector is operably configured to staple and sever tissue during firing.
12. The surgical instrument of claim 1, wherein the handle further comprises a pistol grip, the rack comprises a bendable rack stowable in the pistol grip when retracted.
13. A surgical instrument comprising;
a handle;
a staple applying assembly distal from the handle and comprising;
a plurality of staples, and an anvil having a staple forming surface, the staple forming surface moveable from an open position spaced away from the plurality of staples to a closed position adjacent to the plurality of staples; and a staple applying mechanism operably coupled to the staple applying assembly, comprising:
a rotary cam member having at least one cam lobe, and at least one coupling member operatively associated with the rotary cam member and the staple applying assembly such that rotation of the rotary cam member causes the application of at least a portion of the staples from the staple applying assembly.
14. The surgical instrument of claim 13, wherein the coupling member comprises a rack.
15. The surgical instrument of claim 13, further comprising at least one drive member operably engagable with at least one lobe of the rotary cam member to rotate the rotary cam member and to eject at least a portion of the plurality of staples.
16. The surgical instrument of claim 15, further including a firing member operably coupled to the at least one drive member, such that actuation of the firing member causes ejection of at least a portion of the staples.
17. The surgical instrument of claim 16, wherein multiple actuations of the firing member apply all of the plurality of staples from the staple applying assembly.
18. The surgical instrument of claim 16, wherein the drive member is operably coupled to a bias member, the bias member biasing the drive member into engagement with the rotary cam upon actuation of the actuation member.
19. The surgical instrument of claim 18, wherein the drive member is operably coupled to a bias member by a spring member, the spring member moving the drive member in response to movement of the actuation member.
20. The surgical instrument of claim 18, wherein the drive member is operably coupled to a bias member by a spring, the spring moving the wedge member into operative engagement with at least one cam lobe in response to actuation of the actuation member.
21. A surgical instrument, comprising:
an end effector operably configured to respond to a firing motion;
a shaft attached to the end effector and including an elongate firing member coupled to the end effector for movement to longitudinally transmit the firing motion;
and a handle proximally attached to the shaft, comprising:
a firing actuator repeatably moveable in a firing direction and a return direction, a rack connected to the firing member of the shaft, and a means for rotationally coupling repeated firing direction motion from the firing actuator into the rack and maintaining a current position of the rack during return direction motion of the firing actuator.
22. The surgical instrument of claim 21, wherein the end effector further comprises a stapling and severing apparatus responsive to the firing motion.
23. The surgical instrument of claim 22, wherein the stapling and severing apparatus further comprises a pair of opposing jaws responsive to a closing motion, the handle further comprising a means for closing the pair of opposing jaws.
CA2510871A 2004-06-30 2005-06-27 Surgical stapling instrument incorporating a multistroke firing mechanism having a rotary transmission Expired - Fee Related CA2510871C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/881,105 US7367485B2 (en) 2004-06-30 2004-06-30 Surgical stapling instrument incorporating a multistroke firing mechanism having a rotary transmission
US10/881,105 2004-06-30

Publications (2)

Publication Number Publication Date
CA2510871A1 true CA2510871A1 (en) 2005-12-30
CA2510871C CA2510871C (en) 2011-08-16

Family

ID=34941783

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2510871A Expired - Fee Related CA2510871C (en) 2004-06-30 2005-06-27 Surgical stapling instrument incorporating a multistroke firing mechanism having a rotary transmission

Country Status (14)

Country Link
US (1) US7367485B2 (en)
EP (1) EP1611857B1 (en)
JP (1) JP4799930B2 (en)
KR (1) KR101141031B1 (en)
CN (1) CN100496416C (en)
AT (1) ATE380506T1 (en)
AU (1) AU2005202471B2 (en)
BR (1) BRPI0502730B8 (en)
CA (1) CA2510871C (en)
DE (1) DE602005003715T2 (en)
ES (1) ES2297635T3 (en)
MX (1) MXPA05007125A (en)
PL (1) PL1611857T3 (en)
RU (1) RU2434592C2 (en)

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CA2510871C (en) 2011-08-16
DE602005003715D1 (en) 2008-01-24
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US7367485B2 (en) 2008-05-06
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US20060000868A1 (en) 2006-01-05
AU2005202471A1 (en) 2006-01-19

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