Circular stapling device with buttress
First Claim
1. A circular stapling device, comprising:
- a handle assembly;
an elongate body that extends from the handle assembly;
a pusher;
a cartridge assembly mounted on a distal end of the elongate body, the cartridge assembly including;
a housing;
a circular knife for cutting tissue;
a secondary knife; and
a fastener cartridge body supported on the housing and having a tissue engaging surface that extends to an annular edge;
a circular cartridge buttress member having a body portion supported on the tissue engaging surface of the fastener cartridge body, a portion of the buttress member extending over the annular edge of the tissue engaging surface; and
an elastomeric retaining member releasably securing the buttress member to the cartridge assembly, the secondary knife being movable with the pusher member to cut the retaining member.
1 Assignment
0 Petitions
Accused Products
Abstract
The cartridge assembly includes a housing, a pusher member, a fastener cartridge body, a circular cartridge buttress member, and a retaining ring member. The pusher member is supported within the housing and movable between a first position and a second position. The fastener cartridge body is supported on the housing and has a tissue engaging surface that extends to an annular edge. One or both of the housing and the fastener cartridge body define an annular containment groove. The circular cartridge buttress member has a body portion and an extension portion. The body portion is supported on the tissue engaging surface of the fastener cartridge body. The extension portion extends from the body portion and over the annular edge of the tissue engaging surface. The retaining ring member is secured within the containment groove to releasably secure the extension portion of the circular cartridge buttress member to the cartridge assembly.
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Citations
10 Claims
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1. A circular stapling device, comprising:
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a handle assembly; an elongate body that extends from the handle assembly;
a pusher;a cartridge assembly mounted on a distal end of the elongate body, the cartridge assembly including; a housing; a circular knife for cutting tissue; a secondary knife; and a fastener cartridge body supported on the housing and having a tissue engaging surface that extends to an annular edge; a circular cartridge buttress member having a body portion supported on the tissue engaging surface of the fastener cartridge body, a portion of the buttress member extending over the annular edge of the tissue engaging surface; and an elastomeric retaining member releasably securing the buttress member to the cartridge assembly, the secondary knife being movable with the pusher member to cut the retaining member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification