Hernia mesh
First Claim
1. A hernia mesh for use in repairing a defect in an abdominal wall or cavity, said mesh comprising:
- a first layer capable of being anchored on the abdominal wall next to the defect, wherein said first layer has a first degradation time and is made from a bioabsorbable polymer, copolymer, polymer blend or polymer composite, wherein said first layer is porous and has a pore size between about 50-1000 μ
m and a second layer, wherein said second layer is configured such that it is fixed on the first layer and capable of being placed in contact with the abdominal wall or cavity wherein said second layer has a second degradation time that is longer than the first degradation time and the second layer is made from a bioabsorbable polymer, copolymer, polymer blend or polymer composite.
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Accused Products
Abstract
According to the present invention, a flexible, fibrous hernia mesh is provided, which is intended to be implanted to close hernia defects. The mesh has at least two functional components or layers: (1) a rapidly degradable first layer and (2) a more slowly degradable (with respect to the first layer) second layer. Using the fibrous mesh of this invention, the hernia defect can be closed so that a) the second layer supports the area until the scar tissue is strong enough (around 6 months), to prevent recurrent hernia formation, b) while the more rapid degradation of the first layer induces scar tissue formation due to inflammatory reaction, and c) the second layer isolates the first layer from the abdominal cavity, preventing tissue to tissue adhesion onto the intestines. The mesh is placed on the uncovered fascia area with its more rapidly absorbable side (the first layer) towards the fascia.
317 Citations
13 Claims
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1. A hernia mesh for use in repairing a defect in an abdominal wall or cavity, said mesh comprising:
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a first layer capable of being anchored on the abdominal wall next to the defect, wherein said first layer has a first degradation time and is made from a bioabsorbable polymer, copolymer, polymer blend or polymer composite, wherein said first layer is porous and has a pore size between about 50-1000 μ
m anda second layer, wherein said second layer is configured such that it is fixed on the first layer and capable of being placed in contact with the abdominal wall or cavity wherein said second layer has a second degradation time that is longer than the first degradation time and the second layer is made from a bioabsorbable polymer, copolymer, polymer blend or polymer composite. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A hernia mesh for use in repairing a defect in an abdominal wall or cavity, said mesh comprising:
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a first layer capable of being anchored on the abdominal wall next to the defect, wherein said first layer has a first degradation time and is made from bioabsorbable polymer, copolymer, polymer blend or polymer composite, wherein said first layer is porous and has a pore size between about 50-1000 μ
m; and
second layer, wherein said second layer is configured such that it is fixed on the first layer and capable of being placed in contact with the abdominal wall or cavity, wherein said second layer has a second degradation time that is longer than the first degradation time, said second layer is made from bioabsorbable polymer, copolymer, polymer blend or polymer composite, and said second layer being capable of isolating the first layer from the abdominal cavity thus preventing tissue adhesion.
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Specification