# US 2017/0281184 A1 · Surgical stapling system comprising a jaw attachment lockout

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- Number: US 2017/0281184 A1
- Document ID: US20170281184A1
- Status: Published application
- Kind: A1
- Application number: 15/089,203
- Filed: 2016-04-01
- Published: 2017-10-05
- Earliest claimed: 2016-04-01
- Assignees: Ethicon Endo-Surgery, Inc.
- Applicants: Ethicon Endo-Surgery, LLC
- Inventors: Frederick E. Shelton, IV; Christopher C. Miller; Jason L. Harris; Brian Dinardo; Daniel J. Mumaw
- Web page: https://patentgrep.com/patent/US20170281184A1

## CPC

- A61B 17/072: for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B 17/00234: {for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)}
- A61B 17/068: Surgical staplers {, e.g. containing multiple staples or clamps}({staplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105;} for performing anastomosis A61B17/115; {staplers in general B25C5/00})
- A61B 17/0686: {having a forming anvil staying below the tissue during stapling}
- A61B 17/07207: {the staples being applied sequentially}
- A61B 17/105: {Wound clamp magazines (for packaging sharps A61B50/3001)}
- A61B 17/115: Staplers for performing anastomosis, e.g. in a single operation
- A61B 17/1155: {Circular staplers comprising a plurality of staples}
- A61B 17/32: Surgical cutting instruments ({A61B18/042 takes precedence; suture cutters A61B17/0467;} implements for ligaturing and cutting {A61B17/122, A61B17/12; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133})
- A61B 17/3211: Surgical scalpels, knives; Accessories therefor
- A61B 17/0644: {penetrating the tissue, deformable to closed position}
- A61B 17/07292: {Reinforcements for staple line, e.g. pledgets}
- A61B 17/29: Forceps for use in minimally invasive surgery
- A61B 17/320092: {with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw}
- A61B 90/37: {Surgical systems with images on a monitor during operation}
- A61B 2017/00017: {Electrical control of surgical instruments}
- A61B 2017/00022: {Sensing or detecting at the treatment site}
- A61B 2017/00115: {with audible or visual output}
- A61B 2017/00128: {related to intensity or progress of surgical action}
- A61B 2017/00199: {with a console, e.g. a control panel with a display}
- A61B 2017/00305: {Constructional details of the flexible means}
- 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}
- A61B 2017/00398: {using powered actuators, e.g. stepper motors, solenoids}
- A61B 2017/00407: {Ratchet means}
- A61B 2017/00424: {ergonomic, e.g. fitting in fist}
- A61B 2017/0046: {with a releasable handle; with handle and operating part separable}
- A61B 2017/00464: {for use with different instruments}
- A61B 2017/00473: {Distal part, e.g. tip or head (A61B2017/00464 takes precedence)}
- A61B 2017/00477: {Coupling (A61B2017/0046 takes precedence)}
- A61B 2017/00734: {battery operated}
- A61B 2017/00818: {Treatment of the gastro-intestinal system}
- A61B 2017/00946: {malleable}
- A61B 2017/00964: {composite}
- A61B 2017/07214: {Stapler heads}
- A61B 2017/07221: {curved}
- A61B 2017/07228: {Arrangement of the staples}
- A61B 2017/07235: {containing different staples, e.g. staples of different shapes, sizes or materials}
- 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}
- A61B 2017/07257: {characterised by its anvil}
- A61B 2017/07264: {characterised by its staple forming cavities, e.g. geometry or material}
- A61B 2017/07271: {characterised by its cartridge}
- A61B 2017/07278: {characterised by its sled or its staple holder}
- A61B 2017/07285: {characterised by its cutter}
- A61B 2017/2903: {transferring rotary motion}
- A61B 2017/2905: {flexible}
- A61B 2017/291: {the position of the handle being adjustable with respect to the shaft}
- A61B 2017/2912: {transmission of forces to actuating rod or piston}
- A61B 2017/292: {connection of actuating rod to handle, e.g. ball end in recess}
- A61B 2017/2922: {toggle linkages}
- A61B 2017/2923: {Toothed members, e.g. rack and pinion}
- A61B 2017/2927: {the angular position of the head being adjustable with respect to the shaft}
- A61B 2017/2932: {Transmission of forces to jaw members}
- A61B 2017/2946: {Locking means}
- A61B 2090/034: {abutting on parts of the device itself}
- A61B 2090/08021: {of the patient or his organs}
- A61B 2090/0808: {for indicating correct assembly of components, e.g. of the surgical apparatus}
- 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}
- A61B 2090/0814: {Preventing re-use}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A surgical stapling instrument is disclosed. The stapling instrument comprises a staple cartridge including a circular array of staple cavities defined therein and an anvil configured to deform the staples. The stapling instrument further comprises a closure drive configured to position the anvil relative to the staple cartridge and a firing drive configured to eject the staples from the staple cartridge. The closure drive includes a shaft which is extendable above the staple cartridge to permit the anvil to be attached to the shaft. In various instances, the stapling instrument is configured and arranged such that the anvil cannot be attached to the shaft unless the shaft is moved into a fully-extended position above the staple cartridge.

## Claims

### Claim 1

An end effector of a circular stapling instrument, said end effector comprising:
a frame;
a cartridge body including staple cavities;
staples removably stored in said staple cavities; and
a closure drive, comprising:
an anvil configured to deform said staples;
a trocar shaft movable between an extended position and a retracted position; and
a clip attached to said trocar shaft, wherein said frame is configured to bias said clip into an attachment configuration when said trocar shaft is in said extended position and permit said anvil to be attached to said trocar shaft, and wherein said clip is configured to resiliently expand into a blocking configuration when said trocar shaft is in said retracted position and prevent said anvil from being attached to said trocar shaft.

### Claim 2 (depends on 1)

The end effector of claim 1, wherein said trocar shaft comprises an attachment shoulder, wherein said anvil comprises a plurality of attachment arms configured to engage said attachment shoulder when said clip is in said attachment configuration.

### Claim 3 (depends on 2)

The end effector of claim 2, wherein said clip is configured to bias said attachment arms away from said attachment shoulder when said clip is in said blocking configuration.

### Claim 4

An end effector of a circular stapling instrument, said end effector comprising:
a frame;
a cartridge body including staple cavities;
staples removably stored in said staple cavities; and
a closure drive, comprising:
an anvil configured to deform said staples;
a trocar shaft movable between a retracted position and a fully-extended position; and
means for blocking the attachment of said anvil to said trocar shaft when said trocar shaft is not in said fully-extended position.

### Claim 5

An end effector of a circular stapling instrument, said end effector comprising:
a frame;
a cartridge body including staple cavities;
staples removably stored in said staple cavities; and
a closure drive, comprising:
an anvil configured to deform said staples;
a trocar shaft extendable between a retracted position and a threshold position; and
a connector configured to prevent said anvil from being attached to said trocar shaft when said trocar shaft is not extended to said threshold position and configured to permit said anvil to be attached to said trocar shaft when said trocar shaft is extended to said threshold position.

### Claim 6 (depends on 5)

The end effector of claim 5, wherein said connector comprises a clip.

### Claim 7

A circular stapling assembly, comprising:
a frame comprising a distal seat;
a firing drive;
a replaceable cartridge, comprising:
a connector engageable with said distal seat;
staple cavities; and
staples removably stored in said staple cavities, wherein said firing drive is configured to eject said staples from said staple cavities during a firing stroke of said firing drive;
a sensor configured to detect whether said replaceable cartridge is properly seated in said distal seat; and
a lock configured to prevent said firing drive from performing said firing stroke if said sensor detects that said replaceable cartridge is not properly seated in said distal seat.

### Claim 8 (depends on 7)

The circular stapling assembly of claim 7, wherein said sensor is part of a sensor circuit, wherein said replaceable cartridge comprises a contact which completes said sensor circuit when said replaceable cartridge is properly seated in said distal seat, and wherein said contact cannot complete said sensor circuit when said replaceable cartridge is not properly seated in said distal seat.

### Claim 9 (depends on 8)

The circular stapling assembly of claim 8, wherein said sensor circuit comprises a processor, wherein said processor is in signal communication with said lock, and wherein said processor can operate said lock between a locked configuration and an unlocked configuration.

### Claim 10 (depends on 7)

The circular stapling assembly of claim 7, wherein said sensor is configured to deactivate said lock when said replaceable cartridge is properly seated in said distal seat.

### Claim 11 (depends on 7)

The circular stapling assembly of claim 7, wherein said sensor comprises a mechanical sensor.

### Claim 12

A stapling assembly, comprising:
a staple cartridge comprising a cartridge body and a plurality of staples removably stored in said cartridge body;
a shaft comprising a frame, wherein said cartridge body is attached to said frame when said staple cartridge is assembled to said shaft; and
a firing drive, comprising:
a first drive member; and
a second drive member, wherein said second drive member is movable between a first position in which said second drive member is not operably engaged with said first drive member and a second position in which said second drive member is operably engaged with said first drive member, and wherein said staple cartridge is configured to push said second drive member into said second position when said staple cartridge is assembled to said shaft.

### Claim 13 (depends on 12)

The stapling assembly of claim 12, wherein said first firing member comprises a first drive interface, wherein said second firing member comprises a second drive interface, and wherein said stapling assembly further comprises:
a transmission interface disposed between said first drive interface and said second drive interface;
a first biasing member positioned intermediate said first drive interface and said transmission interface configured to bias said transmission interface out of operative engagement with said first drive member, wherein said first biasing member is compressible to permit said first drive interface to engage said transmission interface; and
a second biasing member positioned intermediate said second drive interface and said transmission interface configured to bias said transmission interface out of operative engagement with said second drive member, wherein said second biasing member is compressible to permit said second drive interface to engage said transmission interface

### Claim 14 (depends on 13)

The stapling assembly of claim 13, wherein said first drive interface comprises a first gear face, wherein said second drive interface comprises a second gear face, and wherein said transmission interface comprises opposing gear faces configured to operably engage said first gear face and said second gear face.

### Claim 15 (depends on 12)

The stapling assembly of claim 12, wherein said first firing member comprises a first drive interface, wherein said second firing member comprises a second drive interface, and wherein said stapling assembly further comprises:
a transmission interface disposed between said first drive interface and said second drive interface;
a biasing member positioned intermediate said first drive interface and said transmission interface configured to bias said transmission interface out of operative engagement with said first drive member, wherein said biasing member is compressible to permit said first drive interface to engage said transmission interface.

### Claim 16 (depends on 12)

The stapling assembly of claim 12, wherein said first firing member comprises a first drive interface, wherein said second firing member comprises a second drive interface, and wherein said stapling assembly further comprises:
a transmission interface disposed between said first drive interface and said second drive interface;
a biasing member positioned intermediate said second drive interface and said transmission interface configured to bias said transmission interface out of operative engagement with said second drive member, wherein said first biasing member is compressible to permit said second drive interface to engage said transmission interface.