Injectable sustained release delivery devices
First Claim
1. A cylindrical drug delivery device shaped and sized for injection through a needle or cannula having a size from about 30 gauge to 23 gauge comprising:
- a core including an effective amount of fluocinolone acetonide, wherein the core comprises a matrix of fluocinolone acetonide particles and one or more polymers;
a polymeric tube, impermeable to fluocinolone acetonide, longitudinally surrounding the core, the tube comprising polyimide;
at least one diffusion membrane, permeable or semi-permeable to the passage of fluocinolone acetonide, disposed at an end of the delivery device.
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Accused Products
Abstract
An injectable drug delivery device includes a core containing one or more drugs and one or more polymers. The core may be surrounded by one or more polymer outer layers (referred to herein as “coatings,” “skins,” or “outer layers”). In certain embodiments, the device is formed by extruding or otherwise preforming a polymeric skin for a drug core. The drug core may be co-extruded with the skin, or inserted into the skin after the skin has been extruded, and possibly cured. In other embodiments, the drug core may be coated with one or more polymer coatings. These techniques may be usefully applied to fabricate devices having a wide array of drug formulations and skins that can be selected to control the release rate profile and various other properties of the drugs in the drug core in a form suitable for injection using standard or non-standard gauge needles. The device may be formed by combining at least one polymer, at least one drug, and at least one liquid solvent to form a liquid suspension or solution wherein, upon injection, such suspension or solution under goes a phase change and forms a gel. The configuration may provide for controlled release of the drug(s) for an extended period.
174 Citations
31 Claims
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1. A cylindrical drug delivery device shaped and sized for injection through a needle or cannula having a size from about 30 gauge to 23 gauge comprising:
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a core including an effective amount of fluocinolone acetonide, wherein the core comprises a matrix of fluocinolone acetonide particles and one or more polymers; a polymeric tube, impermeable to fluocinolone acetonide, longitudinally surrounding the core, the tube comprising polyimide; at least one diffusion membrane, permeable or semi-permeable to the passage of fluocinolone acetonide, disposed at an end of the delivery device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification