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US 2022/0087679 A1Published application
Surgical stapler with oval tool assembly
AssigneeCovidien LP
InventorsJustin Williams, Russell Pribanic, David A. Nicholas, Andrew M. Miesse, Johana M. Marinelli, Stephen S. Chiang, Drew R. Seils
Life of this patent
Estimating the term…
Abstract
A surgical stapling device includes a tool assembly for performing anastomoses procedures. The tool assembly includes a reload assembly and an anvil assembly that have oval configurations to facilitate passage of the tool assembly into a body cavity of a patient with minimal trauma.
Claims19
A surgical stapling device comprising:
- an elongate body having a distal portion and a proximal portion;
- an anvil retainer supported within and extending from the distal portion of the elongate body, the anvil retainer movable between an advanced position and a retracted position;
- a reload assembly supported on the distal portion of the elongate body, the reload assembly including a shell housing, a staple cartridge supported on the shell housing, staples supported within the staple cartridge, and a staple pushing member movable within the shell housing from a retracted position to an advanced position to eject the staples from the staple cartridge, the staple cartridge having an oval configuration with a width “W” and a length “L”, wherein the length “L” is greater than the width “W”;
- and
- an anvil assembly supported on the anvil retainer and including an anvil, the anvil having an oval configuration that corresponds to the oval configuration of the staple cartridge, the anvil assembly movable in relation to the staple cartridge in response to movement of the anvil retainer between its retracted and advanced positions between open and clamped positions, wherein the anvil is in juxtaposed alignment with the staple cartridge in the clamped position.
2 more elements
A reload assembly comprising:
- a shell housing, a staple cartridge supported on the shell housing, staples supported within the staple cartridge, and a staple pushing member movable within the shell housing from a retracted position to an advanced position to eject the staples from the staple cartridge, the staple cartridge having an oval configuration with a width “W” and a length “L”, wherein the length “L” is greater than the width “W”.
An anvil assembly comprising:
- a center rod;
- and
- an anvil head assembly supported on the center rod by a pivot member and pivotable in relation to the center rod from an operative position to a tilted position, the anvil head assembly including a housing having a post, an anvil supported on the housing, a backup member, and a cut ring that is supported on the backup member, the post and the anvil defining an annular recess, the backup member and the cut ring movable within the annular recess from a retracted position to an advanced position, wherein the anvil has an oval configuration having a width “W” and a length “L”, the length “L” being greater than the width “W”.
Dependencies are inferred from the claim text.