Biodegradable in situ forming film dressing
First Claim
1. A liquid composition suitable for forming an in situ biodegradable film dressing on a human or animal tissue, comprising:
- a liquid formulation of a biodegradable thermoplastic polymer that is insoluble in aqueous or body fluids and an organic solvent that is soluble in aqueous or body fluids;
wherein the composition comprises about 0.01-2 g polymer per ml solvent, and has a viscosity of about 0.1-2000 cps which effectively allows for aerosolization, and wherein the amount and molecular weight of said polymer is such that the composition is capable of coagulating or solidifying to form a film dressing upon contact with an aqueous or based fluid.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention is directed to a biodegradable film dressing with or without additional therapeutic agents, an apparatus for spray delivery and a method for formation of the film dressing-on a human or animal tissue. The film dressing is formed from a liquid composition of at least one biodegradable/bioerodible thermoplastic polymer in a pharmaceutically acceptable solvent. The spray apparatus includes a vessel containing the liquid composition with a dispensing means. The film is formed by dispensing, preferably by spraying, the liquid composition onto a tissue site and contacting the liquid composition with an aqueous based fluid to coagulate or solidify the film onto the human or animal tissue. The biodegradable film can be used to protect and to promote healing of injured tissue and/or to deliver biologically active agents.
175 Citations
12 Claims
-
1. A liquid composition suitable for forming an in situ biodegradable film dressing on a human or animal tissue, comprising:
-
a liquid formulation of a biodegradable thermoplastic polymer that is insoluble in aqueous or body fluids and an organic solvent that is soluble in aqueous or body fluids; wherein the composition comprises about 0.01-2 g polymer per ml solvent, and has a viscosity of about 0.1-2000 cps which effectively allows for aerosolization, and wherein the amount and molecular weight of said polymer is such that the composition is capable of coagulating or solidifying to form a film dressing upon contact with an aqueous or based fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification