Staple buttress retention system
First Claim
1. An annular surgical stapling instrument having a system for retaining buttress material comprising:
- a handle;
an elongate member extending distally from the handle;
an annular staple containing cartridge mounted adjacent a distal end of the elongate member, the staple containing cartridge defining staple pockets for retaining staples;
an annular anvil releasably connectable to the annular staple containing cartridge, the anvil defining staple forming pockets for forming staples ejected from the annular staple containing cartridge;
at least one buttress material having a central portion and a peripheral portion separated by a perforation line wherein the peripheral portion surrounds the entire central portion of the at least one buttress material; and
at least one buttress retainer having a ring configuration defining an open center portion and being removably attached to at least one of the staple containing cartridge and the anvil, each buttress retainer lying outwardly of the staple pockets for selectively retaining the peripheral portion of the buttress material between the buttress retainer and a corresponding tissue contacting surface of one of the staple containing cartridge and the anvil to which the buttress retainer is attached, the peripheral portion being retained after the buttress material has separated at the perforation line, and the open center portion being sized to releasably retain the buttress material, wherein the buttress retainer does not overlie the staple pockets provided in either of the staple containing cartridge or the anvil.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical stapling instrument is provided having systems for securing buttress material to the anvil and staple containing cartridge associated with the surgical instrument. The system includes a retainer configured to engage the anvil or the staple containing cartridge and capture the buttress material between the retainer and the anvil or staple containing cartridge. The disclose retainer engages the anvil or staple containing cartridge in snap fit or friction fit fashion. The buttress material includes a circumferential perforation line enabling the center of the buttress material to be stapled to tissue while the remainder of the buttress material remains with the anvil or staple containing cartridge.
783 Citations
19 Claims
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1. An annular surgical stapling instrument having a system for retaining buttress material comprising:
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a handle; an elongate member extending distally from the handle; an annular staple containing cartridge mounted adjacent a distal end of the elongate member, the staple containing cartridge defining staple pockets for retaining staples; an annular anvil releasably connectable to the annular staple containing cartridge, the anvil defining staple forming pockets for forming staples ejected from the annular staple containing cartridge; at least one buttress material having a central portion and a peripheral portion separated by a perforation line wherein the peripheral portion surrounds the entire central portion of the at least one buttress material; and at least one buttress retainer having a ring configuration defining an open center portion and being removably attached to at least one of the staple containing cartridge and the anvil, each buttress retainer lying outwardly of the staple pockets for selectively retaining the peripheral portion of the buttress material between the buttress retainer and a corresponding tissue contacting surface of one of the staple containing cartridge and the anvil to which the buttress retainer is attached, the peripheral portion being retained after the buttress material has separated at the perforation line, and the open center portion being sized to releasably retain the buttress material, wherein the buttress retainer does not overlie the staple pockets provided in either of the staple containing cartridge or the anvil. - View Dependent Claims (2, 3)
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4. An annular surgical stapling instrument, comprising:
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an annular staple containing cartridge defining a tissue contacting surface; an annular anvil defining a tissue contacting surface, the anvil including staple forming pockets formed in the tissue contacting surface thereof for forming staples expelled from corresponding staple retaining slots defined in the tissue contacting surface of the staple containing cartridge; a buttress material having a central portion, a peripheral portion, and a perforation line separating the central portion from the peripheral portion, at least the peripheral portion being disposed against the tissue contacting surface of at least one of the staple containing cartridge and the anvil, the central portion of the buttress material being separable from the peripheral portion of the buttress material after staples are fired by the surgical instrument; and a buttress material retainer for securing at least a portion of the buttress material against the tissue contacting surface of at least one of the staple containing cartridge and the anvil, the buttress material retainer including a frame configured to overlie the buttress material and extend around at least a portion of the perimeter of the peripheral portion of the buttress material, wherein, upon a firing of the surgical stapling instrument, staples secure the central portion of the buttress material against tissue and the frame retains the peripheral portion of the buttress material against the tissue contacting surface of the at least one of staple containing cartridge and the anvil, and wherein, upon separation of the at least one of the staple containing cartridge and the anvil from the tissue, the central portion of the buttress material is separated from the peripheral portion of the buttress material along the perforation line. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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11. A surgical stapling instrument having a system of retaining buttress material comprising:
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an annular staple containing cartridge defining a tissue contacting surface; an annular anvil defining a tissue contacting surface, the anvil including staple forming pockets formed in the tissue contacting surface thereof for forming staples expelled from corresponding staple retaining slots defined in the tissue contacting surface of the staple containing cartridge; and a buttress material having a central portion and a peripheral portion including a circumferential perforation line separating the central portion from the peripheral portion, the peripheral portion being attached to a tissue contacting surface of at least one of the staple containing cartridge and the anvil, the central portion being separable from the peripheral portion after staples contained in the staple containing cartridge are fired, the buttress material being preloaded on a surgical stapling instrument at the time of manufacture. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification