Polymeric material that releases nitric oxide
First Claim
1. A medical device comprising, prior to bio-degradation, a biodegradable or bioabsorbable non-acidic, non-reducing polymeric material comprising at least one polymer selected from the group consisting of polylactic acid, polyglycolic acid, and copolymers thereof, the polymeric material having inorganic nitrite dispersed throughout at least portions of a matrix thereof, the polymeric material, in the presence of biological fluids, being capable of yielding at least one degradative product that facilitates the generation of nitric oxide from the inorganic nitrite, the degradative product serving as at least one of an acid and a reducing agent, the matrix being permeable to the nitric oxide generated therein.
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Abstract
A polymeric material formed from a biodegradable polymer matrix is impregnated with a nitric oxide donor for continuous release of nitric oxide upon hydration.
233 Citations
27 Claims
- 1. A medical device comprising, prior to bio-degradation, a biodegradable or bioabsorbable non-acidic, non-reducing polymeric material comprising at least one polymer selected from the group consisting of polylactic acid, polyglycolic acid, and copolymers thereof, the polymeric material having inorganic nitrite dispersed throughout at least portions of a matrix thereof, the polymeric material, in the presence of biological fluids, being capable of yielding at least one degradative product that facilitates the generation of nitric oxide from the inorganic nitrite, the degradative product serving as at least one of an acid and a reducing agent, the matrix being permeable to the nitric oxide generated therein.
- 2. The medical device is a biocompatible polymer.
- 15. A medical device comprising, prior to biodegradation, a biodegradable or bioabsorbable non-acidic, non-reducing polymeric material disposed on a blood-contacting surface thereof, the polymeric material comprising at least one polymer selected from the group consisting of polylactic acid, polyglycolic acid, and copolymers thereof, the polymeric material having inorganic nitrite dispersed throughout at least portions of a matrix thereof, the polymeric material, in the presence of biological fluids, being capable of yielding at least one degradative product that facilitates the generation of nitric oxide from the inorganic nitrite, the degradative product serving as at least one of an acid and a reducing agent, the matrix being permeable to the nitric oxide generated therein.
- 22. A method of making a medical device comprising, prior to bio-degradation, a biodegradable or bioabsorbable non-acidic, non-reducing polymeric material comprising at least one polymer selected from the group consisting of polylactic acid, polyglycolic acid, and copolymers thereof, the polymeric material having inorganic nitrite dispersed throughout at least portions of a matrix thereof, the polymeric material, in the presence of biological fluids, being capable of yielding at least one degradative product that facilitates the generation of nitric oxide from the inorganic nitrite, the degradative product serving as at least one of an acid and a reducing agent, the matrix being permeable to the nitric oxide generated therein, the method comprising.
- 25. A medical device comprising, prior to bio-degradation, a biodegradable or bioabsorbable non-acidic, non-reducing biocompatible polymeric material comprising at least one polymer selected from the group consisting of polylactic acid, polyglycolic acid, and copolymers thereof, the polymeric material having acid-labile inorganic nitrite dispersed throughout at least portions of a matrix thereof, the polymeric material, in the presence of acidic aqueous biological fluids, being capable of yielding at least one degradative product comprising an acidic functionality that facilitates the generation of nitric oxide from the inorganic nitrite, the matrix being permeable to the nitric oxide generated therein.
Specification