SURGICAL STAPLING HEAD ASSEMBLY WITH FIRING LOCKOUT FOR A SURGICAL STAPLER

• US 20160113653A1
• Filed: 12/30/2015
• Published: 04/28/2016
• Est. Priority Date: 09/09/2010
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery LLC (Johnson & Johnson)
• Inventors: Zingman, Aron O.
• Granted Patent: US 10,675,035 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 17/115 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 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• 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 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07257 characterised by its anvil

Abstract

In various embodiments, a surgical stapling head is provided that may comprise a staple cartridge for supporting one or more staples, a core movable relative to the staple cartridge, at least one staple driver extending from the core, and a casing configured to at least partially hold the staple cartridge and movably receive the core and the staple driver(s). The casing may further comprise at least one retention member that is configured to move from a first position to a second position when sufficient external force is applied to the retention member, such as that provided by a shaft of a surgical stapler during insertion of the stapling head assembly into the shaft. When the retention member(s) are at the second position, the staple driver(s) may be prevented from driving staples from the staple cartridge, thereby providing a firing lockout feature to the stapling head assembly during insertion into at least a portion of a surgical stapler.

Claims

1-20. -20. (canceled)

21. A surgical stapler, comprising:

a shaft portion;

a stapling head assembly releasably coupled to the shaft portion, the stapling head assembly comprising;

a casing configured to at least partially operably support one or more surgical staples therein, wherein the casing is further configured to movably support at least one staple driver;

a drive system for applying drive motions to the at least one staple driver;

an anvil movably supported relative to the casing for axial movement relative to the casing; and

an anvil adjustment assembly for selectively adjusting an axial position of the anvil relative to the casing, wherein the anvil is releasably coupled to the anvil adjustment assembly.

22. The surgical stapler of claim 21, wherein the stapling head assembly comprises a first retention member for releasably coupling the casing to the shaft portion.

23. The surgical stapler of claim 22, wherein the shaft portion comprises a receiving member configured to receive the first retention member.

24. The surgical stapler of claim 23, wherein the first retention member is configured to spring into locking engagement with the receiving member.

25. The surgical stapler of claim 22, further comprising a second retention member for releasably coupling the anvil to the anvil adjustment assembly.

26. The surgical stapler of claim 25, wherein the second retention member is resiliently deflectable.

27. The surgical stapler of claim 22, wherein the first retention member is resiliently deflectable.

28. A surgical stapler, comprising:

a first drive member;

an anvil releasably coupled to the first drive member;

a second drive member; and

a stapling head assembly releasably coupled to the second drive member, wherein the stapling head assembly comprises at least one staple, and wherein the second drive member is movable relative to the first drive member to deploy the at least one staple into tissue captured between the anvil and the stapling head assembly.

29. The surgical stapler of claim 28, wherein the stapling head assembly comprises a casing configured to at least partially operably support the at least one staple therein, wherein the casing is further configured to movably support a core and at least one staple driver therein, and wherein the second drive member is configured to apply at least one drive motion to the at least one staple driver.

30. The surgical stapler of claim 29, wherein the stapling head assembly comprises a cutting member operably coupled to the core.

31. The surgical stapler of claim 28, wherein one of the anvil and the first drive member comprises a retention member for releasably coupling the anvil to the first drive member.

32. The surgical stapler of claim 31, wherein the retention member is resiliently deflectable.

33. The surgical stapler of claim 28, further comprising:

a first attachment means for releasably coupling the first drive member to the anvil; and

a second attachment means for releasably coupling the second drive member to the stapling head assembly.