Surgical fastener applying apparatus

Patent metadata

Field	Value
Publication number	US-2016338701-A1
Application number	US-201615224843-A
Country	US
Kind code	A1
Filing date	Aug 1, 2016
Priority date	Jun 9, 2011
Publication date	Nov 24, 2016
Grant date	—

Abstract

A surgical fastener applying apparatus for applying fasteners to body tissue. The apparatus includes a clamping lever including a cantilevered locking member for engaging a catch member positioned at the proximal portion of a cartridge receiving half-section of the apparatus to retain the clamping lever in a clamped position. The clamping lever can include a protrusion which is receivable in a depression on the cartridge receiving half-section. The apparatus includes a disposable firing assembly and cartridge.

First claim

1 - 20 . (canceled)

21 . A surgical fastener applying apparatus comprising:
an anvil half-section including a distal anvil portion and a proximal handle portion; a cartridge receiving half-section defining an elongated channel member, the elongated channel member having a distal portion dimensioned to releasably receive a cartridge and a proximal portion configured to support a firing assembly, the elongated channel member including a catch member positioned at the proximal portion; and a clamping lever secured to the cartridge receiving half-section, the clamping lever having a proximal portion and a distal portion and including a handle portion, the clamping lever including a cantilevered locking member which is connected to the proximal portion of the clamping lever by a living hinge, the cantilevered locking member including an engagement member; the clamping lever being operably associated with the anvil half-section and the cartridge receiving half-section and being movable from an unclamped position to a clamped position to releasably secure the anvil portion of the anvil half-section in close approximation with the cartridge, wherein in the clamped position, the engagement member of the cantilevered locking member releasably engages the catch member of the elongated channel member to releasably retain the clamping lever in the clamped position.

22 . The surgical fastener applying apparatus according to claim 21 , wherein the cantilevered locking member includes a finger engagement surface, the finger engagement surface being depressible to effect disengagement of the engagement member and the catch member.

23 . The surgical fastener applying apparatus according to claim 21 , wherein a proximal most end of the clamping lever defines a cutout, the cantilevered locking member being supported within the cutout.

24 . The surgical fastener applying apparatus according to claim 23 , wherein the cantilevered locking member includes an opening, the engagement member being positioned within the opening.

25 . The surgical fastener applying apparatus according to claim 21 , further comprising a spring member which is supported on the clamping lever and positioned to engage the cartridge receiving half-section to urge the clamping lever to the unclamped position.

26 . The surgical fastener applying apparatus according to claim 24 , wherein the engagement member defines a hook portion having a transverse locking surface.

27 . The surgical fastener applying apparatus according to claim 21 , further including a firing assembly, the firing assembly being configured to be releasably secured within the proximal portion of the cartridge receiving half-section and including a firing lever and a cam bar fixedly secured to the firing lever.

28 . The surgical fastener applying apparatus according to claim 22 , wherein the finger engagement surface is proximal of the engagement member.

29 . The surgical fastener applying apparatus according to claim 27 , wherein the firing assembly includes a stationary housing, the stationary housing having a sidewall with a slotted proximal end to define a cantilevered section with a protrusion, the cantilevered section flexible inwardly to releasably secure the firing assembly within the cartridge receiving half-section.

30 . The surgical fastener applying apparatus according to claim 21 , wherein the cartridge receiving half-section includes a sidewall defining a depression and the clamping lever includes a sidewall defining a protrusion, the protrusion being positionable within the depression to prevent the clamping lever from moving to a position where it could be disengaged from the cartridge receiving section.

31 . The surgical fastener applying apparatus according to claim 21 , wherein the clamping lever is releasably secured to the cartridge receiving half-section.

32 . The surgical fastener applying apparatus according to claim 27 , wherein the firing assembly includes a stationary housing, the stationary housing including a blocking member to prevent proximal movement of a slide block of the firing assembly.

33 . A surgical fastener applying apparatus comprising:
an anvil half-section including a distal anvil portion and a proximal handle portion; a cartridge receiving half-section defining an elongated channel member, the elongated channel member having a distal portion dimensioned to releasably receive a cartridge and a proximal portion configured to support a firing assembly, the elongated channel member including a stationary catch member positioned at the proximal portion of the elongated channel member; and a clamping lever pivotally supported on the cartridge receiving half-section, the clamping lever including a handle portion, a cantilevered locking member integrally formed with the handle portion, and a living hinge interconnecting the proximal portion of the handle portion with the cantilevered locking member, the cantilevered locking member including an engagement member; wherein the clamping lever is operably associated with the anvil half-section and the cartridge receiving half-section and is movable from an unclamped position to a clamped position to releasably secure the anvil portion of the anvil half-section in close approximation with the cartridge, the engagement member of the cantilevered locking member being releasably engaged with the catch member of the elongated channel member in the clamped position to releasably retain the clamping lever in the clamped position.

34 . The surgical fastener applying apparatus of claim 33 , wherein the cantilevered locking member defines an opening and the engagement member is positioned within the opening.

35 . The surgical fastener applying apparatus of claim 34 , wherein the engagement member is resilient and defines a hook portion.

36 . The surgical fastener applying apparatus of claim 35 , wherein the catch member is configured to be received within the opening of the cantilevered locking member and includes a locking surface.

37 . The surgical fastener applying apparatus of claim 36 , wherein the catch member is positioned to engage and deflect the engagement member to move the engagement member into releasable engagement with the locking surface of the catch member.

Assignees

• Covidien Lp

Inventors

• Patankar Mangesh
• Gupta Arvind Kumar

Classifications

• A61B2017/320052

  Guides for cutting instruments · CPC title

• A61B17/068

  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}) · CPC title

• A61B2017/07271

  characterised by its cartridge · CPC title

• A61B17/072

  for applying a row of staples in a single action, e.g. the staples being applied simultaneously · CPC title

• A61B17/07207 Primary

  the staples being applied sequentially · CPC title