Implantable polymeric device for sustained release of buprenorphine with minimal initial burst
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United States of America Patent
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Issued Date -
Nov 29, 2007
app pub date -
May 23, 2007
filing date -
May 23, 2006
priority date (Note) -
Abandoned
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Abstract
The present invention provides compositions, methods, and kits for treatment of pain. The invention provides a biocompatible nonerodible polymeric device which releases buprenorphine continuously with generally linear release kinetics for extended periods of time, and exhibits minimal initial burst upon subcutaneous implantation. Buprenorphine is released through pores that open to the surface of the polymeric matrix in which it is encapsulated. The device may be administered subcutaneously to an individual in need of continuous treatment with buprenorphine. Devices of the invention are washed with ethanol for greater than 30 minutes prior to subcutaneous implantation or have release characteristics of a device that has been washed with ethanol for greater than 30 minutes, such as a low peak to steady state plasma level ratio.
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