Cartridge lockout arrangements for rotary powered surgical cutting and stapling instruments

• US 10,478,181 B2
• Filed: 04/18/2016
• Issued: 11/19/2019
• Est. Priority Date: 04/18/2016
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon, LLC (Johnson & Johnson)
• Inventors: Shelton, IV, Frederick E., Harris, Jason L., Baxter, III, Chester O.
• Primary Examiner(s): Tecco, Andrew M
• Assistant Examiner(s): Pathak, Praachi M
• Application Number:
  US15/131,295
• Publication Number:
  US 20170296170A1
• Time in Patent Office: 1,310 Days
• Field of Search: 2271754
• 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 17/072 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 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable
• 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 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00544 pneumatically
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2017/00876 magnetic
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07257 characterised by its anvil
• 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 2017/2902 characterized by features of the actuating rod
• CPC Class Codes: A61B 2017/2903 transferring rotary motion
• CPC Class Codes: A61B 2017/2927 : the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2943 : Toothed members, e.g. rack and pinion
• 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 2090/0803 : Counting the number of times an instrument is used
• 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 90/98 : using electromagnetic means, e.g. transponders

Abstract

A surgical cutting and stapling end effector. Various embodiments comprise a channel that is configured to operably support a removable staple cartridge. A rotary end effector drive shaft is supported within the channel and is configured to move a firing assembly longitudinally within the end effector to cause the sled to eject surgical staples from the staple cartridge. The firing assembly is prevented from moving distally through the channel unless a surgical staple cartridge that has a sled in a starting position has been seated within the channel.

Claims

1. A surgical cutting and stapling end effector, comprising:

a channel configured to operably support a removable staple cartridge that includes surgical staples stored therein that are ejected from the removable staple cartridge as a sled that is movably supported therein is moved from a starting position to an ending position in the removable staple cartridge;

a rotary end effector drive shaft supported within said channel and being selectively rotatable by a source of rotary motion applied thereto; and

a firing assembly movable from a first position wherein said firing assembly is longitudinally movable through said channel and a second locked position wherein said firing assembly is prevented from moving distally through said channel, said firing assembly being biased into said first position prior to rotation of said rotary end effector drive shaft and moving to said second locked position upon rotation of said rotary end effector drive shaft unless said sled of said removable staple cartridge that has been seated in said channel is in the starting position and retainingly engages said firing assembly to thereby retain said firing assembly in said first position during further rotation of said rotary end effector drive shaft, said firing assembly comprising;

a firing body movably supported on said rotary end effector drive shaft;

a rotary advancement member in driving engagement with said rotary end effector drive shaft and in driving engagement with said firing body, said rotary advancement member being movable between said first position and said second locked position relative to said firing body; and

a biasing member between said firing body and said rotary advancement member to bias said rotary advancement member into said first position.

2. The surgical cutting and stapling end effector of claim 1, wherein said rotary advancement member comprises a retention tab that is configured to be retainingly engaged by a portion of the sled when the rotary advancement member is in the first position and the sled is in the starting position to retain said rotary advancement member in said first position.

3. The surgical cutting and stapling end effector of claim 1, wherein said firing body comprises:

a distal mounting lug movably supported on said rotary end effector drive shaft; and

a proximal mounting lug spaced from said distal mounting lug and being movable on said rotary end effector drive shaft, wherein said rotary advancement member is movably supported on said rotary end effector drive shaft between said distal mounting lug and said proximal mounting lug and is movable between said first position and said second locked position.

4. The surgical cutting and stapling end effector of claim 1, further comprising a tissue cutting edge on said firing body.

5. The surgical cutting and stapling end effector of claim 4, further comprising an actuator tab extending distal to said tissue cutting edge and being configured to be engaged by a portion of the sled when the rotary advancement member is in the first position and the sled is in the starting position to retain said rotary advancement member in said first position.

6. The surgical cutting and stapling end effector of claim 1, further comprising an anvil movably supported on said channel and being configured to move between an open position and a closed position upon application of a closing motion thereto.

7. The surgical cutting and stapling end effector of claim 6, wherein said firing assembly is configured to slidably engage said channel and said anvil when said anvil is in said closed position and said firing assembly is longitudinally moved within said channel.

8. The surgical cutting and stapling end effector of claim 6, wherein said firing assembly comprises a firing body movably supported on said rotary end effector drive shaft, and wherein said rotary advancement member comprises a threaded travel nut supported on said rotary end effector drive shaft and in driving engagement with said firing body, said threaded travel nut being movable between said first position and said second locked position relative to said firing body and retained in said first position when in retaining engagement with the sled in the starting position.

9. The surgical cutting and stapling end effector of claim 8, wherein said firing body and said threaded travel nut are configured to slidably engage said channel and said anvil when said anvil is in said closed position and said firing assembly is longitudinally moved within said channel.

10. A surgical cutting and stapling end effector, comprising:

a channel configured to operably support a removable staple cartridge that includes surgical staples stored therein that are ejected from the removable staple cartridge as a sled that is movably supported therein is moved from a starting position to an ending position in the removable staple cartridge;

a rotary end effector drive shaft supported within said channel and being selectively rotatable by a source of rotary motion applied thereto; and

a firing assembly movable from an unlocked position wherein said firing assembly is longitudinally movable through said channel and a locked position wherein said firing assembly is prevented from moving distally through said channel, wherein said firing assembly is biased into said unlocked position prior to rotation of said rotary end effector drive shaft and moves to said locked position upon rotation of said rotary end effector drive shaft unless said sled of said removable staple cartridge that has been seated in said channel is in the starting position and retainingly engages said firing assembly to thereby retain said firing assembly in said unlocked position during further rotation of said rotary end effector drive shaft, and wherein said firing assembly comprising;

a firing body movably supported on said rotary end effector drive shaft;

a rotary advancement member in threaded driving engagement with said rotary end effector drive shaft and in driving engagement with said firing body, wherein said rotary advancement member is movable between said unlocked position and said locked position relative to said firing body; and

a biasing member between said firing body and said rotary advancement member to bias said rotary advancement member into said unlocked position.

11. The surgical cutting and stapling end effector of claim 10, wherein said firing body comprises an unthreaded hole that is configured to receive the rotary end effector drive shaft.