US 2025/0152170 A1Published application

Firing lockout for linear surgical stapler

AssigneeCilag GmbH International

InventorsAndrew C. Deck, Matthew S. Williamson, John J. Newman

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Abstract

An apparatus includes first and second stapler halves that selectively couple together and separate from one another, and a clamp member actuatable to approximate the stapler halves to clamp tissue. A firing assembly is actuatable through a firing stroke to fire the stapling assembly on clamped tissue. The firing assembly includes a firing actuator movable between a retracted position and a deployed position in which the firing actuator is configured to actuate the firing assembly through the firing stroke, and a firing lockout member movable between an engaged position in which the firing lockout member inhibits advancement of the firing assembly through the firing stroke, and a disengaged position in which the firing lockout member permits advancement of the firing assembly through the firing stroke. The firing lockout member is configured to assume the disengaged position only when the firing actuator is in the deployed position.

Claims20

Dependent claims

An apparatus, comprising:

(a) a first stapler half having a first distal jaw portion configured to present a stapling assembly having a plurality of staples;
(b) a second stapler half having a second distal jaw portion configured to present an anvil having a plurality of staple forming pockets, wherein the first and second stapler halves are configured to selectively couple together and separate from one another;
(c) a clamp member presented by one of the first stapler half or the second stapler half, wherein the clamp member is actuatable by a user to approximate the first and second stapler halves and thereby clamp tissue between the first and second distal jaw portions;
(d) a firing assembly presented by one of the first stapler half or the second stapler half, wherein the firing assembly is actuatable by a user through a firing stroke from a home position to a fired position to fire the stapling assembly on the clamped tissue, wherein the firing assembly includes a firing actuator movable by the user between a retracted position and a deployed position in which the firing actuator is configured to actuate the firing assembly through the firing stroke;
and
(e) a firing lockout member movable relative to the firing assembly between an engaged position and a disengaged position, wherein in the engaged position the firing lockout member is configured to inhibit advancement of the firing assembly from the home position toward the fired position, wherein in the disengaged position the firing lockout member is configured to permit advancement of the firing assembly from home position toward the fired position,
wherein the firing lockout member is configured to assume the disengaged position only when the firing actuator is in the deployed position.

4 more elements

An apparatus, comprising:

(a) a first stapler half having a first distal jaw portion configured to present a stapling assembly having a plurality of staples;
(b) a second stapler half having a second distal jaw portion configured to present an anvil having a plurality of staple forming pockets, wherein the first and second stapler halves are configured to selectively couple together and separate from one another;
(c) a clamp member presented by one of the first stapler half or the second stapler half, wherein the clamp member is actuatable by a user from a first position to a second position to approximate the first and second stapler halves and thereby clamp tissue between the first and second distal jaw portions;
(d) a firing assembly presented by the first stapler half, wherein the firing assembly is actuatable by a user through a firing stroke to fire the stapling assembly on the clamped tissue, wherein the firing assembly includes a firing actuator movable by the user between a retracted position and a deployed position in which the firing actuator is configured to actuate the firing assembly through the firing stroke;
and
(e) a firing lockout member presented by the second stapler half, wherein the firing lockout member is configured to engage the firing assembly and thereby inhibit its advancement through the firing stroke when the first and second stapler halves are not fully approximated with the clamp member in the second position.

3 more elements

An apparatus, comprising:

(a) a first stapler half having a first distal jaw portion configured to present a stapling assembly having a plurality of staples;
(b) a second stapler half having a second distal jaw portion configured to present an anvil having a plurality of staple forming pockets, wherein the first and second stapler halves are configured to selectively couple together and separate from one another;
(c) a clamp member presented by one of the first stapler half or the second stapler half, wherein the clamp member is actuatable by a user from a first position to a second position to approximate the first and second stapler halves and thereby clamp tissue between the first and second distal jaw portions;
(d) a firing assembly presented by one of the first stapler half or the second stapler half, wherein the firing assembly is actuatable by a user through a firing stroke to fire the stapling assembly on the clamped tissue, wherein the firing assembly includes:
(i) a sliding member, and
(ii) a firing actuator movable by the user relative to the sliding member between a retracted position and a deployed position in which the firing actuator is configured to actuate the firing assembly through the firing stroke;
and
(e) a firing lockout member presented by one of the first stapler half or the second stapler half, wherein the firing lockout member is configured to directly contact one of the sliding member or the firing actuator and thereby inhibit the firing assembly from advancing through the firing stroke when at least one of:
(i) the firing actuator is not in the deployed position, or
(ii) the first and second stapler halves are not fully approximated with the clamp member in the second position.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/509,723Filed 15 Nov 2023
Published: 15 May 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

A61B 17/07207
For applying a row of staples in a single action, e.g. the staples being applied simultaneously: the staples being applied sequentially
A61B 17/068
Surgical instruments, devices or methods: surgical staplers , e.g. containing multiple staples or clamps
A61B 17/072
Surgical staplers , e.g. containing multiple staples or clamps: for applying a row of staples in a single action, e.g. the staples being applied…
A61B 17/2833
With a single pivotal connection: locking means

Family

US 12,453,555 B2Related patent
US 2025/0152170 A1This patent

From the US filing history. Foreign family members aren’t listed.

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