SURGICAL STAPLING SYSTEM COMPRISING AN UNCLAMPING LOCKOUT

• US 20170281179A1
• Filed: 04/01/2016
• Published: 10/05/2017
• Est. Priority Date: 04/01/2016
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery LLC (Johnson & Johnson)
• Inventors: Shelton, IV, Frederick E., Miller, Christopher C., Harris, Jason L.
• Granted Patent: US 10,456,140 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/0686 having a forming anvil staying below the tissue during stapling
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/07292 Reinforcements for staple line, e.g. pledgets
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• CPC Class Codes: A61B 17/320092 with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
• CPC Class Codes: A61B 17/3211 Surgical scalpels, knives; Accessories therefor
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/00022 Sensing or detecting at the treatment site
• CPC Class Codes: A61B 2017/00115 with audible or visual output with imaging means A61B90/37, A61B34/20
• CPC Class Codes: A61B 2017/00128 related to intensity or progress of surgical action
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 2017/00305 Constructional details of the flexible means
• CPC Class Codes: A61B 2017/00367 : Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
• CPC Class Codes: A61B 2017/00398 : using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00407 : Ratchet means
• CPC Class Codes: A61B 2017/00424 : ergonomic, e.g. fitting in fist
• CPC Class Codes: A61B 2017/0046 : with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/00464 : for use with different instruments with hole for different instruments A61B2017/22072
• CPC Class Codes: A61B 2017/00473 : Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00477 : Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00734 : battery operated
• CPC Class Codes: A61B 2017/00818 : Treatment of the gastro-intestinal system
• CPC Class Codes: A61B 2017/00946 : malleable
• CPC Class Codes: A61B 2017/00964 : composite
• CPC Class Codes: A61B 2017/07214 : Stapler heads
• CPC Class Codes: A61B 2017/07221 : curved
• CPC Class Codes: A61B 2017/07228 : Arrangement of the staples
• CPC Class Codes: A61B 2017/07235 : containing different staples, e.g. staples of different shapes, sizes or materials
• CPC Class Codes: A61B 2017/07242 : achieving different staple heights during the same shot, e.g. using an anvil anvil having different heights or staples of different sizes
• CPC Class Codes: A61B 2017/07257 : characterised by its anvil
• CPC Class Codes: A61B 2017/07264 : characterised by its staple forming cavities, e.g. geometry or material
• CPC Class Codes: A61B 2017/07271 : characterised by its cartridge
• CPC Class Codes: A61B 2017/07278 : characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 : characterised by its cutter
• CPC Class Codes: A61B 2017/2903 : transferring rotary motion
• CPC Class Codes: A61B 2017/2905 : flexible
• CPC Class Codes: A61B 2017/291 : the position of the handle being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2912 : transmission of forces to actuating rod or piston
• CPC Class Codes: A61B 2017/292 : connection of actuating rod to handle, e.g. ball end in recess
• CPC Class Codes: A61B 2017/2922 : toggle linkages
• CPC Class Codes: A61B 2017/2923 : Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/2927 : the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2932 : Transmission of forces to jaw members
• CPC Class Codes: A61B 2017/2946 : Locking means
• CPC Class Codes: A61B 2090/034 : abutting on parts of the device itself
• CPC Class Codes: A61B 2090/08021 : of the patient or his organs
• CPC Class Codes: A61B 2090/0808 : for indicating correct assembly of components, e.g. of the surgical apparatus
• CPC Class Codes: A61B 2090/0811 : for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
• CPC Class Codes: A61B 2090/0814 : Preventing re-use
• CPC Class Codes: A61B 90/37 : Surgical systems with images on a monitor during operation

Abstract

A surgical stapling assembly is disclosed. The stapling instrument comprises a staple cartridge configured to staple the tissue of a patient and a cutting member configure to incise the tissue. The stapling instrument further comprises an anvil movable between an open position and a closed position to clamp tissue against the staple cartridge. The anvil is configured to deform the staples when the staples are ejected from the staple cartridge. In at least one embodiment, the stapling instrument comprises a lockout configured to prevent the cutting member from incising the tissue until after the staples have been formed. In at least one embodiment, the stapling instrument comprises a lockout configured to prevent the anvil from being opened while the cutting member is exposed.

Claims

1. A stapling assembly for stapling tissue, comprising:

a staple cartridge, comprising;

an annular cartridge body;

staple cavities arranged in annular rows in said cartridge body; and

staples removably stored in said staple cavities;

an anvil configured to deform said staples;

a closure drive configured to move said anvil from an open position to a closed position during a closure stroke to compress the tissue against said cartridge body, wherein said closure drive is configured to move said anvil from said closed position to said open position during an opening stroke;

a firing member configured to eject said staples from said staple cavities during a firing stroke, wherein said firing stroke is performed after said closure stroke of said closure drive, wherein said firing member is retracted during a retraction stroke, and wherein said retraction stroke is performed after said firing stroke of said firing member; and

a lockout configured to lock said closure drive and prevent said closure drive from performing said opening stroke before said retraction stroke of said firing member is completed.

2. The stapling assembly of claim 1, wherein said firing member activates said lockout during said firing stroke.

3. The stapling assembly of claim 1, wherein said firing member deactivates said lockout during said retraction stroke.

4. The stapling assembly of claim 1, further comprising a cutting member including a cutting surface configured to cut tissue positioned intermediate said anvil and said cartridge body, wherein said cutting member is stored within said cartridge body during said closure stroke, wherein said firing member is configured to push said cutting member toward said anvil during said firing stroke, and wherein said cutting surface emerges from said cartridge body during said firing stroke.

5. The stapling assembly of claim 4, wherein said cutting surface is retracted into said cartridge body during said retraction stroke of said firing member.

6. The stapling assembly of claim 1, further comprising a cutting member including a cutting surface configured to cut tissue positioned intermediate said anvil and said cartridge body, wherein said cutting member is stored within said cartridge body during said closure stroke, wherein said cutting member is movable toward said anvil during a cutting stroke, wherein said cutting surface emerges from said cartridge body during said cutting stroke, and wherein said cutting stroke occurs at the same time as said firing stroke.

7. The stapling assembly of claim 6, wherein said cutting surface is retracted into said cartridge body during said retraction stroke of said firing member.

8. The stapling assembly of claim 1, further comprising a cutting member including a cutting surface configured to cut tissue positioned intermediate said anvil and said cartridge body, wherein said cutting member is stored within said cartridge body during said closure stroke, wherein said cutting member is movable toward said anvil during a cutting stroke, wherein said cutting edge surface from said cartridge body during said cutting stroke, and wherein said cutting stroke occurs after said firing stroke.

9. The stapling assembly of claim 8, wherein said cutting surface is retracted into said cartridge body during said retraction stroke of said firing member.

10. The stapling assembly of claim 8, wherein said cutting surface is retracted into said cartridge body during a cutting retraction stroke which is separate and distinct from said retraction stroke of said firing member.

11. The stapling assembly of claim 1, further comprising a cutting member including a cutting surface configured to cut tissue positioned intermediate said anvil and said cartridge body, wherein said cutting member is stored within said cartridge body during said closure stroke, wherein said cutting member is movable toward said anvil during a cutting stroke, wherein said cutting surface emerges from said cartridge body during said cutting stroke, and wherein said cutting stroke occurs after said retraction stroke.

12. The stapling assembly of claim 11, wherein said cutting surface is retracted into said cartridge body during a cutting retraction stroke which is separate and distinct from said retraction stroke of said firing member.

13. A stapling assembly for stapling tissue, comprising:

a staple cartridge, comprising;

an annular cartridge body;

staple cavities arranged in annular rows in said cartridge body; and

staples removably stored in said staple cavities;

an anvil configured to deform said staples;

a closure drive configured to move said anvil from an open position to a closed position to compress the tissue against said cartridge body during a closure stroke of said closure drive, wherein said closure drive is configured to move said anvil from said closed position to said open position during an opening stroke of said closure drive;

a cutting member comprising a cutting edge configured to incise the tissue captured between said anvil and said cartridge body during a cutting stroke, wherein said cutting stroke is performed after said closure stroke, wherein said cutting member is retracted within said cartridge body during a retraction stroke, and wherein said retraction stroke is performed after said cutting stroke; and

a lockout configured to lock said closure drive and prevent said closure drive from performing said opening stroke before said retraction stroke of said cutting member is completed.

14. The stapling assembly of claim 13, wherein said lockout comprises:

a switch arm movable between a locked configuration and an unlocked configuration, wherein said switch arm is engaged with said closure drive when said switch arm is in said locked configuration; and

a spring configured to bias said switch arm into said locked configuration, wherein said cutting member is engaged with said switch arm when said cutting member is in a retracted position, wherein said cutting member holds said switch arm in said unlocked configuration when said cutting member is in said retracted position, and wherein said cutting member disengages from said switch arm and said spring biases said switch arm into said locked configuration when cutting surface emerges from said cartridge body.

15. The stapling assembly of claim 14, wherein said cutting member re-engages said switch arm during said retraction stroke to return said switch arm into said unlocked configuration and disengage said switch arm from said closure drive.

16. The stapling assembly of claim 13, wherein said lockout comprises:

a switch arm movable between a locked configuration and an unlocked configuration, wherein said switch arm is engaged with said closure drive when said switch arm is in said locked configuration; and

a spring configured to bias said switch arm into said locked configuration, wherein said cutting member is engaged with said switch arm when said cutting member is in a retracted position, wherein said cutting member holds said switch arm in said unlocked configuration when said cutting member is in said retracted position, and wherein said cutting member disengages from said switch arm and said spring biases said switch arm into said locked configuration during said cutting stroke.

17. The stapling assembly of claim 16, wherein said cutting member re-engages said switch arm during said retraction stroke to return said switch arm into said unlocked configuration and disengage said switch arm from said closure drive.

18. A stapling assembly for stapling tissue, comprising:

a staple cartridge, comprising;

an annular cartridge body;

staple cavities arranged in annular rows in said cartridge body; and

staples removably stored in said staple cavities;

an anvil configured to deform said staples;

a closure drive configured to move said anvil from an open position to a closed position to compress the tissue against said cartridge body during a closure stroke of said closure drive, wherein said closure drive is configured to move said anvil from said closed position to said open position during an opening stroke of said closure drive;

a cutting member comprising a cutting edge stored within said cartridge body during said closure stroke, and wherein said cutting edge is configured to emerge from said cartridge body during a cutting stroke; and

means for preventing said closure drive from performing said opening stroke while said cutting edge is not stored within said cartridge body.

19. A stapling assembly for stapling tissue, comprising:

a staple cartridge, comprising;

an annular cartridge body;

staple cavities arranged in annular rows in said cartridge body; and

staples removably stored in said staple cavities;

an anvil configured to deform said staples;

a closure drive configured to move said anvil from an open position to a closed position to compress the tissue against said cartridge body during a closure stroke of said closure drive, wherein said closure drive is configured to move said anvil from said closed position to said open position during an opening stroke of said closure drive;

a cutting member comprising a cutting edge stored within said cartridge body during said closure stroke, and wherein said cutting edge is configured to protrude from said cartridge body during a cutting stroke; and

means for preventing said closure drive from performing said opening stroke while said cutting edge protrudes from said cartridge body.