Sustained release hydrophobic bioactive PLGA microspheres
First Claim
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1. A method of preparing a controlled release microcapsule pharmaceutical composition of burst-free sustained, programmable release of a hydrophobic bioactive agent over a duration of 24 hours to 100 days, comprising the steps of:
- a) mixing a hydrophobic bioagent with a blend of end-capped and uncapped biocompatible, biodegradable poly(lactide/glycolide) copolymer, wherein said end-capped polymer has terminal residues functionalized as esters and said uncapped polymer has terminal residues existing as carboxylic acids; and
b) performing a solvent evaporation process to form said microcapsules.
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Abstract
A controlled release microcapsulate pharmaceutical formulation for burst-free, sustained, programmable release of hydrophobic bioactive agent over a duration from 24 hours to 100 days comprising: and a blend of end-capped uncapped biocompatible, biodegradable poly(lactide/glycolide).
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Citations
13 Claims
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1. A method of preparing a controlled release microcapsule pharmaceutical composition of burst-free sustained, programmable release of a hydrophobic bioactive agent over a duration of 24 hours to 100 days, comprising the steps of:
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a) mixing a hydrophobic bioagent with a blend of end-capped and uncapped biocompatible, biodegradable poly(lactide/glycolide) copolymer, wherein said end-capped polymer has terminal residues functionalized as esters and said uncapped polymer has terminal residues existing as carboxylic acids; and
b) performing a solvent evaporation process to form said microcapsules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification