Controlled release drug delivery
First Claim
1. A material for delivering a biologically active compound comprising a solid carrier material having dissolved and/or dispersed therein at least two biologically active compounds, each of said at least two biologically active compounds having a biologically active nucleus which is common to each of the biologically active compounds, and the at least two biologically active compounds having maximum solubility levels in a single solvent which differ from each other by at least 10% by weight;
- wherein said solid carrier comprises a biocompatible polymeric material.
1 Assignment
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Accused Products
Abstract
Biologically active materials are provided in a cylindrical carrier medium with better control over the rate of delivery and length of time of delivery by providing a carrier having dissolved or dispersed therein at least two compounds having a common biologically active nucleus, but with different solubility parameters. The combination of the two different variants of the same drug with different solubility parameters provides the material with control over the rate of release of the compounds (by varying the proportions of the variants) and most importantly, extending the useful life of the device by enabling release of effective levels of the compounds over a longer period of time. The cylindrical carrier medium, comprised of silicone, further includes a tail, a skirt, or a rate-limiting membrane.
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Citations
43 Claims
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1. A material for delivering a biologically active compound comprising a solid carrier material having dissolved and/or dispersed therein at least two biologically active compounds, each of said at least two biologically active compounds having a biologically active nucleus which is common to each of the biologically active compounds, and the at least two biologically active compounds having maximum solubility levels in a single solvent which differ from each other by at least 10% by weight;
- wherein said solid carrier comprises a biocompatible polymeric material.
- View Dependent Claims (3, 6)
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2. A material for delivering a medically active compound comprising a solid carrier material having dissolved and/or dispersed therein at least two medically active compounds, each of said at least two medically active compounds having a medically active nucleus which is common to each of the medically active compounds, and the at least two medically active compounds having maximum solubility levels in a single solvent which differ from each other by at least 10% by weight;
- wherein said solid carrier comprises a biocompatible polymeric material.
- View Dependent Claims (4, 5, 7, 8, 9, 16)
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10. A process for delivery of a biologically active ingredient to a patient comprising:
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providing an article for delivering a medically active compound comprising a solid carrier material having dissolved and/or dispersed therein at least two medically active compounds, wherein said solid carrier comprises a biocompatible polymeric material, each of said at least two medically active compounds having a medically active nucleus which is common to each of the medically active compounds, and the at least two medically active compounds having maximum solubility levels in a single solvent which differ from each other by at least 10% by weight, and implanting said article into a patient. - View Dependent Claims (11, 12, 13, 14, 15)
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17. A drug delivery device comprising:
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a solid carrier material having loaded therein at least two medically active compounds, each of said at least two medically active compounds having a medically active nucleus which is common to each of the medically active compounds, and the at least two medically active compounds having maximum solubility levels in a single solvent which differ from each other by at least 10% by weight; and
the solid carrier comprising a cylinder formed of a biocompatible polymeric material. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A drug delivery device comprising:
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a solid carrier material having loaded therein at least two medically active compounds, each of said at least two medically active compounds having a medically active nucleus which is common to each of the medically active compounds, and the at least two medically active compounds having maximum solubility levels in a single solvent which differ from each other by at least 10% by weight;
a first medically active compound comprising dexamethasone sodium phosphate (DSP), and a second medically active compound comprises dexamethasone acetate (DA);
the solid carrier comprising a cylinder formed of a biocompatible polymeric material including silicone, the carrier having a rate limiting membrane disposed on at least a portion of the cylinder; and
the cylinder having a length of 2-10 centimeters, and a diameter of 2-5 millimeters.
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32. A drug delivery device comprising:
a solid carrier material of biocompatible polymeric material, the solid carrier material having loaded therein at least two medically active compounds, each of said at least two medically active compounds having a medically active nucleus which is common to each of the medically active compounds, and the at least two medically active compounds having maximum solubility levels in a single solvent which differ from each other by at least a factor of approximately two when measured as percent by weight. - View Dependent Claims (33)
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34. A drug delivery device comprising:
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a solid carrier material of biocompatible polymeric material, the solid carrier material having loaded therein at least two medically active compounds, each of said at least two medically active compounds having a medically active nucleus which is common to each of the medically active compounds;
wherein a first medically active compound is generally hydrophilic and a second medically active compound is generally hydrophobic.
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35. A drug delivery device comprising:
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a solid carrier material of biocompatible polymeric material, the solid carrier material having loaded therein at least two medically active compounds, each of said at least two medically active compounds having a medically active nucleus which is common to each of the medically active compounds;
wherein a first medically active compound is generally soluble in an aqueous solvent and a second medically active compound is generally insoluble in the aqueous solvent. - View Dependent Claims (36, 37)
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38. A process for delivering a medically active nucleus to a patient comprising:
implanting an article into the patient, wherein the article comprises a solid carrier material of biocompatible polymeric material, the solid carrier material having loaded therein at least two medically active compounds, each of said at least two medically active compounds having the medically active nucleus, and the at least two medically active compounds having maximum solubility levels in a bodily fluid which differ from each other by at least 10% by weight. - View Dependent Claims (39, 40)
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41. A process for delivering a medically active nucleus to a patient comprising:
implanting an article into the patient, wherein the article comprises a solid carrier material of biocompatible polymeric material, the solid carrier material having loaded therein at least two medically active compounds, each of said at least two medically active compounds having the medically active nucleus, and the at least two medically active compounds having maximum solubility levels in a bodily fluid which differ from each other by at least a factor of approximately two when measured as percent by weight.
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42. A process for delivering a medically active nucleus to a patient comprising:
implanting an article into the patient, wherein the article comprises a solid carrier material of biocompatible polymeric material, the solid carrier material having loaded therein at least two medically active compounds, each of said at least two medically active compounds having the medically active nucleus, wherein a first medically active compound is generally hydrophilic and a second medically active compound is generally hydrophobic.
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43. A process for delivering a medically active nucleus to a patient comprising:
implanting an article into the patient, wherein the article comprises a solid carrier material of biocompatible polymeric material, the solid carrier material having loaded therein at least two medically active compounds, each of said at least two medically active compounds having the medically active nucleus, wherein a first medically active compound is generally soluble in a bodily fluid and a second medically active compound is generally insoluble in the bodily fluid.
Specification