SHAFT ASSEMBLY COMPRISING A LOCKOUT

• US 20180168595A1
• Filed: 12/21/2016
• Published: 06/21/2018
• Est. Priority Date: 12/21/2016
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery LLC (Johnson & Johnson)
• Inventors: Overmyer, Mark D., Swayze, Jeffrey S., Beckman, Andrew T., Koch, JR., Robert L., Shelton, IV, Frederick E., Harris, Jason L.
• Granted Patent: US 10,492,785 B2
• Time in Patent Office: Days
• 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 2017/00017 Electrical control of surgical instruments
• 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 2017/0046 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 2017/07228 Arrangement of the staples
• CPC Class Codes: A61B 2017/0725 with settable gap between anvil and cartridge, e.g. for different staple heights at different shots
• 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 2017/2902 characterized by features of the actuating rod
• CPC Class Codes: A61B 2017/2912 transmission of forces to actuating rod or piston
• 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 2017/2929 : with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2017/2936 : Pins in guiding slots
• CPC Class Codes: A61B 2017/2946 : Locking means
• CPC Class Codes: A61B 2034/302 : specifically adapted for manipulations within body cavities, e.g. within abdominal or thoracic cavities
• CPC Class Codes: A61B 2090/0808 : for indicating correct assembly of components, e.g. of the surgical apparatus
• CPC Class Codes: A61B 2090/0814 : Preventing re-use
• CPC Class Codes: A61B 2090/0818 : Redundant systems, e.g. using two independent measuring systems and comparing the signals
• CPC Class Codes: A61B 34/30 : Surgical robots
• CPC Class Codes: A61B 34/37 : Master-slave robots A61B34/35 takes precedence
• CPC Class Codes: A61B 34/71 : Manipulators operated by drive cable mechanisms

Abstract

An end effector is disclosed comprising a cartridge channel, a staple cartridge positionable in the cartridge channel, and a firing assembly configured to lock itself if the staple cartridge is not positioned in the cartridge channel. Moreover, the firing assembly is configured to lock itself if the staple cartridge has been at least partially spent.

Claims

1. A shaft assembly for use with a surgical system, said shaft assembly comprising:

a staple cartridge, comprising;

a cartridge body including staple cavities;

staples removably stored in said staple cavities; and

a sled movable between an unfired position and a fired position during a firing stroke to eject said staples from said staple cavities;

an end effector, comprising;

a cartridge channel configured to receive said staple cartridge, wherein said cartridge channel comprises a lockout recess;

an anvil configured to deform said staples; and

a lock spring; and

a firing member, comprising;

a firing bar comprising a cutting edge configured to cut the tissue of a patient during said firing stroke; and

a lock rotatably mounted to said firing bar, wherein said lock is rotatable between an unlocked position and a locked position, wherein said sled is configured to hold said lock in said unlocked position when said staple cartridge is seated in said cartridge channel and said sled is in said unfired position, and wherein said lock is rotatable from said unlocked position to said locked position by said lock spring when either said staple cartridge is not in said cartridge channel or said sled is not in said unfired position.

2. The shaft assembly of claim 1, further comprising staple drivers, wherein said sled is configured to engage said staple drivers to eject said staples from said staple cavities during said firing stroke.

3. The shaft assembly of claim 2, wherein said staple drivers are integrally-formed with said staples.

4. The shaft assembly of claim 1, wherein said firing bar further comprises a coupling member, wherein said coupling member comprises said cutting edge, and wherein said coupling member comprises a cartridge cam configured to engage said cartridge channel and an anvil cam configured to engage said anvil during said firing stroke.

5. The shaft assembly of claim 4, wherein said anvil is rotatable relative to said cartridge channel between an open position and a closed position, and wherein said coupling member is configured to control the position of said anvil relative to said staple cartridge.

6. The shaft assembly of claim 4, wherein said cartridge channel is rotatable relative to said anvil between an open position and a closed position, and wherein said coupling member is configured to control the position of said staple cartridge relative to said anvil.

7. The shaft assembly of claim 1, wherein said anvil is rotatable relative to said cartridge channel between an open position and a closed position, and wherein said shaft assembly further comprises a closure member configured to move said anvil toward said closed position.

8. The shaft assembly of claim 1, wherein said cartridge channel is rotatable relative to said anvil between an open position and a closed position, and wherein said shaft assembly further comprises a closure member configured to move said cartridge channel toward said closed position.

9. The shaft assembly of claim 1, wherein said end effector comprises a proximal end and a distal end, and wherein said lock extends distally with respect to said cutting edge.

10. The shaft assembly of claim 1, wherein said lock is biased into said lockout recess by said lock spring when said firing stroke is initiated and either said staple cartridge is not in said cartridge channel or said sled is not in said unfired position, and wherein said firing stroke is stopped by said lock and said lockout recess before said staples are ejected from said staple cavities.

11. The shaft assembly of claim 1, wherein said firing bar is not biased toward said lockout recess by said lock spring.

12. The shaft assembly of claim 1, wherein said lock is configured to push said sled through said firing stroke if said staple cartridge is seated in said cartridge channel and said sled is in said unfired position at the initiation of said firing stroke.

13. The shaft assembly of claim 12, wherein said firing member is retractable after at least a portion of said firing stroke has been completed, and wherein said sled is not retractable with said firing member.

14. The shaft assembly of claim 12, wherein said firing member is retractable after at least a portion of said firing stroke has been completed, and wherein said lock is configured to remain in said unlocked position as said lock is retracted past said lock spring.

15. The shaft assembly of claim 1, wherein said lock comprises a cantilever beam comprising a proximal end fixedly mounted to said cartridge channel and a distal end movable relative said proximal end.

16. The shaft assembly of claim 1, wherein said cartridge channel is removably attachable to said end effector.

17. The shaft assembly of claim 1, wherein said cartridge channel is not removably attachable to said end effector.

18. A shaft assembly for use with a surgical system, said shaft assembly comprising:

a staple cartridge, comprising;

a cartridge body;

staples, wherein each said staple is at least partially stored in said cartridge body; and

a sled movable between an unfired position and a fired position during a firing stroke to eject said staples from said cartridge body;

an end effector, comprising;

a cartridge channel configured to receive said staple cartridge, wherein said cartridge channel comprises a lockout;

an anvil configured to deform said staples; and

a biasing member; and

a firing assembly, comprising;

a firing member; and

a lock rotatably mounted to said firing member, wherein said lock is rotatable between an unlocked position and a locked position, wherein said sled is configured to hold said lock in said unlocked position when said staple cartridge is seated in said cartridge channel and said sled is in said unfired position, and wherein said lock is rotatable from said unlocked position to said locked position by said biasing member when either said staple cartridge is not in said cartridge channel or said sled is not in said unfired position.

19. An end effector for use with a surgical system, said end effector comprising:

a staple cartridge, comprising;

a cartridge body;

staples, wherein each said staple is at least partially stored in said cartridge body; and

a sled movable between an unfired position and a fired position during a firing stroke to eject said staples from said cartridge body;

a cartridge channel configured to receive said staple cartridge, wherein said cartridge channel comprises a lockout;

an anvil configured to deform said staples;

a biasing member; and

a firing assembly, comprising;

a firing member; and

a lock rotatably mounted to said firing member, wherein said lock is rotatable between an unlocked position and a locked position, wherein said sled is configured to hold said lock in said unlocked position when said staple cartridge is seated in said cartridge channel and said sled is in said unfired position, and wherein said lock is rotatable from said unlocked position to said locked position by said biasing member when either said staple cartridge is not in said cartridge channel or said sled is not in said unfired position.