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 cartridge assembly mounted on a distal end of the elongate body, the cartridge assembly defining an annular containment groove, the cartridge assembly including;
a housing;
a pusher member supported within the housing and being movable between a first position and a second position; 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 and an extension portion, the body portion being supported on the tissue engaging surface of the fastener cartridge body, the extension portion extending from the body portion and over the annular edge of the tissue engaging surface; and
a retaining ring member secured within the containment groove over the extension portion of the circular cartridge buttress member to releasably secure the circular cartridge buttress member to the fastener cartridge body.
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.
144 Citations
20 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 cartridge assembly mounted on a distal end of the elongate body, the cartridge assembly defining an annular containment groove, the cartridge assembly including; a housing; a pusher member supported within the housing and being movable between a first position and a second position; 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 and an extension portion, the body portion being supported on the tissue engaging surface of the fastener cartridge body, the extension portion extending from the body portion and over the annular edge of the tissue engaging surface; and a retaining ring member secured within the containment groove over the extension portion of the circular cartridge buttress member to releasably secure the circular cartridge buttress member to the fastener cartridge body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A cartridge assembly, comprising:
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a housing; a pusher member supported within the housing and being movable between a first position and a second position; and a fastener cartridge body supported on the housing and having a tissue engaging surface that extends to an annular edge, wherein at least one of the housing and the fastener cartridge body define an annular containment groove; a circular cartridge buttress member having a body portion and an extension portion, the body portion being supported on the tissue engaging surface of the fastener cartridge body, the extension portion extending from the body portion and over the annular edge of the tissue engaging surface; and a retaining ring member secured within the containment groove to releasably secure the extension portion of the circular cartridge buttress member to the cartridge assembly. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method for releasing a cartridge buttress member from a cartridge assembly of a circular stapling device, the method comprising the steps of:
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providing a circular stapling device including an elongate member having a cartridge assembly mounted on a distal end of the elongate body, the cartridge assembly defining a containment groove and including a retaining ring member and a cartridge buttress member, the cartridge buttress member having a body portion and an extension portion, the retaining ring member being disposed within the containment groove over the extension portion to secure the body portion on a tissue engaging surface of the cartridge assembly; and cutting the retaining ring member to release the cartridge buttress member from the circular stapling device. - View Dependent Claims (17, 18, 19, 20)
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Specification