Circular stapler buttress
First Claim
1. An implantable medical device adapted to reinforce a surgical opening formed in a patient with a circular stapler having a cutting blade, said device comprising:
- a buttress material adapted for mounting on said circular stapler, said stapler having an anvil that is larger in diameter than said surgical opening that is created by said cutting blade, wherein following stapling with said stapler and cutting with said cutting blade, said buttress material is adapted to reinforce stapled tissue surrounding said surgical opening created by said cutting blade in said patient and has an adaptive opening formed therein;
wherein the buttress material comprises a bioabsorbable web material substantially in the form of a circle, said circular web material having an outer edge and a centrally located opening delimiting an inner edge;
at least two disruptable areas positioned along said outer edge of said circular web material and at least two protrusions of web material each extending beyond each of said at least two disruptable areas, wherein said protrusions are adapted to attach said buttress material to said circular stapler;
a series of slits in said bioabsorbable web material positioned between said outer edge and said inner edge of said circular web material;
wherein said series of slits serve to create said adaptive opening in said buttress material;
wherein said adaptive opening corresponds to said surgical opening in said patient and has a diameter smaller than said diameter of said anvil; and
wherein said adaptive opening allows said anvil to be removed therethrough without causing permanent alteration to said buttress material.
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Accused Products
Abstract
A buttress for use with circular surgical staplers that does not require adhesive to securely fasten the buttress to the stapler. Following cutting and stapling by the circular stapler, the buttress has an adaptive opening through its central region with a diameter smaller than the outer diameter of the stapler anvil. Because of relief features built into the buttress, the stapler anvil may be pulled through the buttress material without causing permanent alteration to the buttress. These relief features may be provided regardless of whether the buttress is made of inelastic or elastic materials. The buttress is generally circular in shape with an outer diameter sized to coincide with the outer diameter of the stapler body staple compression surface and the outer diameter of the anvil compression surface of a circular stapler with which it is used. Prior to surgical use, the buttress is attached to the stapler with disruptable portions extending from outer perimetal areas of the buttress.
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Citations
16 Claims
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1. An implantable medical device adapted to reinforce a surgical opening formed in a patient with a circular stapler having a cutting blade, said device comprising:
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a buttress material adapted for mounting on said circular stapler, said stapler having an anvil that is larger in diameter than said surgical opening that is created by said cutting blade, wherein following stapling with said stapler and cutting with said cutting blade, said buttress material is adapted to reinforce stapled tissue surrounding said surgical opening created by said cutting blade in said patient and has an adaptive opening formed therein; wherein the buttress material comprises a bioabsorbable web material substantially in the form of a circle, said circular web material having an outer edge and a centrally located opening delimiting an inner edge; at least two disruptable areas positioned along said outer edge of said circular web material and at least two protrusions of web material each extending beyond each of said at least two disruptable areas, wherein said protrusions are adapted to attach said buttress material to said circular stapler; a series of slits in said bioabsorbable web material positioned between said outer edge and said inner edge of said circular web material; wherein said series of slits serve to create said adaptive opening in said buttress material; wherein said adaptive opening corresponds to said surgical opening in said patient and has a diameter smaller than said diameter of said anvil; and wherein said adaptive opening allows said anvil to be removed therethrough without causing permanent alteration to said buttress material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification