Osmotic drug delivery system
First Claim
1. An osmotic pharmaceutical delivery system comprising (a) a semipermeable wall that maintains its integrity during pharmaceutical delivery and which has at least one passage therethrough;
- and (b) a composition within said wall, said composition comprising;
(i) a pharmaceutical agent that has limited solubilty in water or in aqueous environments at physiological pH;
(ii) at least one non swelling solubilizing agent which enhances the solubility of said pharmaceutical agent;
(iii) at least one non-swelling osmotic agent, and (iv) at least one lubricant, said composition within said wall excluding a polymer that swells.
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Accused Products
Abstract
Disclosed is an osmotic pharmaceutical delivery system comprising (a) a semi-permeable wall that maintains its integrity during pharmaceutical delivery and which has at least one passage therethrough; (b) a single, homogeneous composition within said wall, which composition consists essentially of (i) a pharmaceutically active agent, (ii) at least one non-swelling solubilizing agent which enhances the solubility of the pharmaceutically active agent; (iii) at least one non-swelling osmotic agent and (iv) a non-swelling wicking agent dispersed throughout the composition which enhances the surface area contact of the pharmaceutical agent with the incoming aqueous fluid.
91 Citations
15 Claims
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1. An osmotic pharmaceutical delivery system comprising (a) a semipermeable wall that maintains its integrity during pharmaceutical delivery and which has at least one passage therethrough;
- and (b) a composition within said wall, said composition comprising;
(i) a pharmaceutical agent that has limited solubilty in water or in aqueous environments at physiological pH;
(ii) at least one non swelling solubilizing agent which enhances the solubility of said pharmaceutical agent;
(iii) at least one non-swelling osmotic agent, and (iv) at least one lubricant, said composition within said wall excluding a polymer that swells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- and (b) a composition within said wall, said composition comprising;
Specification