Circular stapler tissue retention spring method
First Claim
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1. A method of using a circular stapler having an anvil, an anvil shaft, a staple cartridge and an actuating means to connect sections of intestine, comprising:
- positioning a tissue retention spring onto anvil shaft, wherein the spring comprises;
a plurality of connected helical coils members defining a spring member, the coils separated by spaces, said spring member having a proximal end and a distal end and an axial length, said spring member having an axial passageway therethrough for mounting onto the anvil shaft;
inserting the anvil and cartridge into adjacent sections of an intestine;
tying at least one section of the intestine to the spring so that the intestine extends into at least one of the spaces between the coils of the spring; and
, actuating the actuating means to staple the sections of the intestine together.
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Abstract
An tissue retention spring for use with a surgical circular stapler used to perform an anastomosis. The tissue retention spring is mounted onto the anvil shaft of the stapler. The spring has a plurality of connected helical coils defining a member having an axial passage therethrough. The spring provides tissue retention, tissue and fluid venting, and improved stapler closing.
2126 Citations
13 Claims
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1. A method of using a circular stapler having an anvil, an anvil shaft, a staple cartridge and an actuating means to connect sections of intestine, comprising:
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positioning a tissue retention spring onto anvil shaft, wherein the spring comprises;
a plurality of connected helical coils members defining a spring member, the coils separated by spaces, said spring member having a proximal end and a distal end and an axial length, said spring member having an axial passageway therethrough for mounting onto the anvil shaft;inserting the anvil and cartridge into adjacent sections of an intestine; tying at least one section of the intestine to the spring so that the intestine extends into at least one of the spaces between the coils of the spring; and
, actuating the actuating means to staple the sections of the intestine together. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of retaining tissue on a circular stapler having an anvil shaft, said method comprising:
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concentrically mounting a tissue retention spring on the anvil shaft, said tissue retention spring comprising a plurality of connected helical coils members defining a member, the coils separated by spaces, said member having a proximal end and a distal end and an axial length, said spring member having an axial passageway therethrough for mounting onto the anvil shaft; placing tissue about the spring; and
,compressing the spring so that at least some of the tissue is engaged by the spring in the spaces between the coils. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification