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US 2001/0022962 A1Published application
Cellulose diacetate compositions for use in embolizing blood vessels
OwnerRichard J. Greff, Michael L. Jones +1inventors
InventorsRichard J. Greff, Michael L. Jones, Scott Evans
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Abstract
Disclosed are compositions suitable for use in embolizing blood vessels which compositons comprise a cellulose diacetate polymer, a biocompatible solvent and a water insoluble contrasting agent selected from the group consisting of tantalum, tantalum oxide, and barium sulfate. Also disclosed are methods for embloizing a blood vessel using the compositins described herein.
Claims15
A composition comprising:
- (a) from about 2.5 to about 8 weight percent of a cellulose diacetate having an acetyl content of from about 31 to about 40 weight percent;
- (b) from about 10 to about 40 weight percent of a water insoluble contrast agent selected from the group consisting of tantalum, tantalum oxide and barium sulfate;
- (c) from about 52 to about 87.5 weight percent of a biocompatible solvent
- wherein the weight percent of the cellulose acetate, water insoluble contrast agent and biocompatible solvent is based on the total weight of the complete composition.
1 more element
A method for embolizing a blood vessel by injecting into said blood vessel a sufficient amount of an embolizing composition comprising:
- (a) from about 2.5 to about 8 weight percent of a cellulose diacetate embolizing agent wherein said cellulose diacetate has an acetyl content of from about 31 to about 40 weight percent;
- (b) from about 10 to about 40 weight percent of a water insoluble contrast agent selected from the group consisting of tantalum, tantalum oxide and barium sulfate;
- (c) from about 52 to about 87.5 weight percent of a biocompatible solvent
- wherein the weight percent of the cellulose acetate, water insoluble contrast agent and biocompatible solvent is based on the total weight of the complete composition
- under conditions wherein a precipitate is formed which embolizes the blood vessel.
2 more elements
Dependencies are inferred from the claim text.