Rate controlled release of a pharmaceutical agent in a biodegradable device
First Claim
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1. A chemical erosion controlled release drug delivery system comprising:
- a biodegradable polymer with a therapeutically effective amount of at least one hydrophobic or hydrophobically-enhanced pharmaceutically active agent with rate of chemical erosion and release rate of said active agent controlled by said active agent.
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Abstract
Chemical erosion controlled release drug delivery systems are provided that allow controlled release of sustained concentrations of therapeutic agents within a treated area for a prolonged period of time. The favorable solubility characteristics of the chemical erosion controlled release drug delivery systems are controlled through the hydrophobicity and load level of pharmaceutically active agent or drug. Such controlled solubility characteristics allow for manipulation of the drug release rates depending on the particular therapeutic use and the particular needs of the patient.
44 Citations
20 Claims
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1. A chemical erosion controlled release drug delivery system comprising:
a biodegradable polymer with a therapeutically effective amount of at least one hydrophobic or hydrophobically-enhanced pharmaceutically active agent with rate of chemical erosion and release rate of said active agent controlled by said active agent. - View Dependent Claims (3, 4, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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2. A chemical erosion controlled release drug delivery system comprising:
a biodegradable polymer with a therapeutically effective amount of at least one hydrophobic or hydrophobically-enhanced pharmaceutically active agent present in an amount sufficient to control rate of said active agent release from said biodegradable polymer.
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5. A method of producing a hydrophobically-enhanced pharmaceutically active agent comprising:
admixing a hydrophilic pharmaceutically active agent or a pharmaceutically active agent of low hydrophobicity with a hydrophobic agent. - View Dependent Claims (7)
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20. A method of using a drug delivery system comprising:
- creating an incision within an eye; and
implanting said drug delivery system within said eye through said incision using a cannula used along with a needle of a vitrectomy system.
- creating an incision within an eye; and
Specification