Polymeric compositions useful as controlled release implants
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United States of America Patent
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Aug 31, 1999
Issued Date -
N/A
app pub date -
Aug 8, 1997
filing date -
Oct 15, 1991
priority date (Note) -
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Abstract
The invention is directed to an improved system for controlled release of biologically active materials and to a liquid composition for its formation. The liquid composition is composed of a thermoplastic polymer, rate modifying agent, bioactive material and organic solvent. The liquid composition is capable of forming a biodegradable and/or bioerodible microporous, solid polymer matrix. The matrix is useful as an implant in patients (humans and animals) for delivery of biologically active substances to tissues or organs.
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