IP Library › Granted Patent US 12,727,883
Granted Patent B2
US 12,727,883 · App. 18/990,196 · Granted Sep 8, 2026

Surgical stapling instrument having a two-position lockout mechanism

Inventors: Thomas M.B. Roberts (Rancho Santa Margarita, CA); Timothy M. Hopkins (Rancho Santa Margarita, CA); Quinton A. Quintana (Chino Hills, CA)
Assignee: Applied Medical Resources Corporation
A61B17/0686A61B17/07207A61B2017/07257A61B2017/07271A61B2017/07278A61B2017/07285
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Quick Facts
Patent No.
US 12,727,883
App. No.
18/990,196
Granted
Sep 8, 2026
Kind
B2
Abstract

Surgical stapler systems can include lockout mechanisms to restrict further movement of a jaw assembly and provide different functionality when a jaw assembly is empty and when a partially or fully fired reload cartridge is present in the jaw assembly. When the jaw assembly is empty, the empty jaw assembly lockout mechanism can arrest an open-close stroke of the jaw assembly. When an at least partially fired reload is present in the jaw assembly, a fired reload lockout mechanism can allow operation of the jaw assembly through a substantial portion of an open-close stroke, but restrict actuation of the jaw assembly in a firing stroke. The separate lockout mechanisms can be embodied in a single lockout lever actuatable by lockout actuators to three distinct positions or by two independently-operable lockout levers.

Claims (38)

1 . A surgical stapler comprising:

an elongate shaft having a proximal end, a distal end, and a longitudinal axis extending between the proximal end and the distal end;

a firing beam having a proximal end, distal end, and a lower edge, at least a portion of the firing beam being longitudinally slidable within the elongate shaft, the firing beam comprising:

a first lockout notch having a first height from the lower edge; and

a second lockout notch having a second height from the lower edge, the second height different from the first height; and

a jaw assembly at the distal end of the elongate shaft, the jaw assembly comprising:

a first jaw defining an anvil;

a second jaw; and

a lockout mechanism engageable with the first lockout notch with the jaw assembly in a first operational configuration, engageable with the second lockout notch with the jaw assembly in a second operational configuration, and spaced from the first lockout notch and the second lockout notch with the jaw assembly in a third operational configuration.

2 . The surgical stapler of claim 1 , wherein the second jaw comprises a reload support and further comprising a reload cartridge removably positionable in the reload support.

3 . The surgical stapler of claim 2 , wherein the first operational configuration comprises an empty jaw assembly such that the lockout mechanism engages the first lockout notch upon distal longitudinal sliding of the firing beam when the reload cartridge is removed from the reload support.

4 . The surgical stapler of claim 2 , wherein the second operational configuration comprises a fired reload cartridge such that the lockout mechanism engages the second lockout notch upon distal longitudinal sliding of the firing beam when a fired reload cartridge is positioned in the reload support.

5 . The surgical stapler of claim 2 , wherein the third operational configuration comprises an unfired reload cartridge such that the lockout mechanism is spaced from the first lockout notch and the second lockout notch upon distal longitudinal sliding of the firing beam when an unfired reload cartridge is positioned in the reload support.

6 . The surgical stapler of claim 1 , wherein the first lockout notch and the second lockout notch are contiguous.

7 . The surgical stapler of claim 6 , wherein the lower edge is relieved over a longitudinal span corresponding to the first lockout notch and the second lockout notch.

8 . The surgical stapler of claim 1 , wherein the lockout mechanism comprises a lockout lever pivotably coupled to the second jaw.

9 . The surgical stapler of claim 8 , wherein the lockout lever comprises a proximal end, a distal end opposite the proximal end, and a pivot coupled to the second jaw between the proximal end and the distal end.

10 . The surgical stapler of claim 9 , wherein the proximal end of the lockout lever is movable between a first lockout height corresponding to the first height of the first notch, a second lockout height corresponding to the second height of the second notch, and an unlocked height.

11 . The surgical stapler of claim 10 , wherein the second jaw comprises a reload support and further comprising a reload cartridge removably positionable in the reload support.

12 . The surgical stapler of claim 11 , wherein the reload cartridge comprises a first lockout actuator engageable with the distal end of the lockout lever and a second lockout actuator engageable with the distal end of the lockout lever.

13 . The surgical stapler of claim 12 , wherein the first lockout actuator is longitudinally fixed with respect to the reload cartridge.

14 . The surgical stapler of claim 12 , wherein the second lockout actuator is longitudinally slidable with respect to the reload cartridge.

15 . The surgical stapler of claim 1 , wherein the lockout mechanism comprises a first lockout lever pivotably coupled to the second jaw and a second lockout lever pivotably coupled to the second jaw and pivotable independently from the first lockout lever.

16 . The surgical stapler of claim 15 , wherein the first lockout lever is engageable with the first lockout notch.

17 . The surgical stapler of claim 15 , wherein the second lockout lever is engageable with the second lockout notch.

18 . The surgical stapler of claim 15 , wherein the first lockout notch is longitudinally spaced from the second lockout notch on the firing beam.

19 . A surgical stapler comprising:

an elongate shaft having a proximal end, a distal end, and a longitudinal axis extending between the proximal end and the distal end;

a firing beam having a proximal end and a distal end, at least a portion of the firing beam being longitudinally slidable within the elongate shaft;

a jaw assembly at the distal end of the elongate shaft, the jaw assembly comprising:

a first jaw defining an anvil;

a second jaw defining a reload support configured to receive a reload cartridge; and

a lockout mechanism engageable with the firing beam; and

a reload cartridge having a plurality of staples deployable therefrom, the reload cartridge removably positionable in the reload support, and the reload cartridge comprising:

a cartridge body;

a first lockout actuator positioned on the cartridge body and stationary with respect to the cartridge body to engage the lockout mechanism when the reload cartridge is positioned in the reload support; and

a second lockout actuator positioned within the cartridge body and longitudinally slidable with respect to the cartridge body to engage the lockout mechanism when the reload cartridge is positioned in the reload support and the plurality of staples remain undeployed.

20 . The surgical stapler of claim 19 , wherein the first lockout actuator comprises a ramped boss positioned on the cartridge body, and wherein the reload cartridge comprises a slider longitudinally distally movable within the cartridge body to deploy the plurality of staples from the reload cartridge, the slider comprising a slider tail, and wherein the second lockout actuator comprises the slider tail.

Continuity (5)
Continuation 18364968 · Aug 3, 2023
Continuation 17700789 · Mar 22, 2022
Continuation 16801788 · Feb 26, 2020
Provisional Application 62811457 · Feb 27, 2019
Related Publication 20250127508A1 · Apr 24, 2025
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