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Cellulose diacetate compositions for use in embolizing blood vessels

  • US 5,580,568 A
  • Filed: 07/27/1995
  • Issued: 12/03/1996
  • Est. Priority Date: 07/27/1995
  • Status: Expired due to Term
First Claim
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1. 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 solventwherein the weight percent of the cellulose diacetate, water insoluble contrast agent and biocompatible solvent is based on the total weight of the complete composition.

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