US 11,944,294 B2Granted

Circular stapling device with articulating anvil retainer assembly

AssigneeCovidien LP

InventorsJustin Williams, Stephen Paul

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Abstract

A circular stapling device includes a handle assembly, an elongate body portion that extends distally from the handle assembly, a shell assembly supported on a distal end of the elongate body portion, an anvil retainer assembly extending through the shell assembly, and an anvil assembly supported on the anvil retainer assembly. The anvil retainer assembly includes a retainer member including a retainer body and an engagement member that is pivotally supported on the retainer body. The engagement member is movable axially in relation to the retainer body from a retracted position to an advanced position to move the engagement member to from a locked position to an unlocked position in relation to the retainer body. In the unlocked position, the engagement member is movable from a non-articulated position to an articulated position in relation to the retainer body.

Claims20

Dependent claims

A surgical stapling device comprising:

a handle assembly;
an elongate body portion extending distally from the handle assembly in a distal direction;
a shell assembly supported on a distal end of the elongate body portion, the shell assembly including an annular cartridge positioned on a distal end of the shell assembly;
an anvil retainer assembly extending through the shell assembly, the anvil retainer assembly including a retainer member having a retainer body and an engagement member, the retainer body defining a first longitudinal axis that extends in the distal direction through the annular cartridge and having a distal portion, the engagement member defining a second longitudinal axis and being pivotally supported on the distal portion of the retainer body for movement between a pivoted position in which the first and second longitudinal axes are misaligned and a non-pivoted position in which the first and second axes are coaxial, the engagement member extending distally of the shell assembly and being configured as a trocar having a tapered distal portion for piercing tissue;
and
an anvil assembly having an anvil head and an anvil shaft coupled to the anvil head, the anvil shaft releasably coupled to the engagement member of the anvil retainer assembly.

3 more elements

A surgical stapling device comprising:

an elongate body portion having a proximal portion and a distal portion spaced from the proximal portion in a distal direction;
a shell assembly supported on the distal portion of the elongate body portion, the shell assembly including an annular cartridge positioned on a distal end of the shell assembly;
an anvil retainer assembly extending through the shell assembly and including a retainer member having a retainer body defining a first longitudinal axis that extends through the annular cartridge in the distal direction and an engagement member defining a second longitudinal axis, and a housing defining a lumen, the engagement member extending distally from the shell assembly in the distal direction and being pivotally supported on a distal portion of the retainer body, the engagement member movable between a first position in which the first and second longitudinal axes are aligned and a second position in which the first and second longitudinal axes are misaligned, the engagement member having a proximal portion received within the lumen when the engagement member is in the first position to retain the engagement member in the first position, the engagement member configured as a trocar having a tapered distal portion for piercing tissue;
and
an anvil assembly including an anvil shaft and an anvil head, the anvil shaft releasably coupled to the engagement member.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/948,592Filed 20 Sep 2022 · continuation
Priority: 15 Aug 2016
Published: US 2023/0012329 A112 Jan 2023
Granted: 2 Apr 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A61B 17/068
Surgical instruments, devices or methods: surgical staplers , e.g. containing multiple staples or clamps
A61B 17/07292
For applying a row of staples in a single action, e.g. the staples being applied simultaneously: reinforcements for staple line, e.g. pledgets
A61B 17/1155
Staplers for performing anastomosis, e.g. in a single operation: circular staplers comprising a plurality of staples
A61B 17/1152
Staplers for performing anastomosis, e.g. in a single operation: applying the staples on the outside of the lumen

Family

Application62/375,176Us provisional application · filed 15 Aug 2016
Application15/665,542Parent of this continuation · filed 1 Aug 2017
US 11,452,522 B2Parent of this continuation · filed 27 Sep 2022
US 2023/0012329 A1Pre-grant publication · published 12 Jan 2023
US 2018/0042606 A1Published application
US 11,944,294 B2This patent

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