Suspending vehicles and pharmaceutical suspensions for drug dosage forms
First Claim
1. A suspending vehicle in a pump-driven dosage form comprising a hydrophobic solvent, a hydrophilic solvent, and a biocompatible polymer, wherein the suspending vehicle is substantially free of stiff gels upon contact with an aqueous medium.
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Accused Products
Abstract
Suspending vehicles and pharmaceutical suspensions that include a biocompatible polymer that can be combined with a hydrophobic solvent and a hydrophilic solvent to provide vehicles and suspensions that are substantially free of stiff gels upon contact with an aqueous medium are provided. Vehicles and suspensions remain flowable out of a pump-driven dosage form over the life of the dosage form. Such vehicles and suspensions are also biocompatible, suitable for creating and maintaining drug suspensions, and capable of providing stable drug formulations.
104 Citations
32 Claims
- 1. A suspending vehicle in a pump-driven dosage form comprising a hydrophobic solvent, a hydrophilic solvent, and a biocompatible polymer, wherein the suspending vehicle is substantially free of stiff gels upon contact with an aqueous medium.
- 15. A pharmaceutical suspension comprising a pharmaceutically active agent and a suspending vehicle, wherein the pharmaceutically active agent is suspended or dispersed in the suspending vehicle, wherein the suspending vehicle comprises a hydrophobic solvent, a hydrophilic solvent, and a biocompatible polymer and the suspending vehicle is substantially free of stiff gels upon contact with an aqueous medium.
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23. A dosage form comprising:
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a first wall that maintains its physical and chemical integrity during the life of the dosage form and is substantially impermeable to a pharmaceutical suspension;
a second wall that is partially permeable to an exterior fluid;
a compartment defined by the first wall and the second wall;
a pharmaceutical suspension that is positioned within the compartment and comprises a hydrophobic solvent, a hydrophilic solvent, a biocompatible polymer, and a pharmaceutically active agent, wherein the suspending vehicle is substantially free of stiff gels upon contact with an aqueous medium;
a pump in communication with the first wall, the second wall, and the compartment; and
an exit port in communication with the compartment. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A method comprising:
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identifying a hydrophobic solvent;
identifying a hydrophilic solvent;
identifying a biocompatible polymer; and
mixing the hydrophilic solvent, the hydrophobic solvent, and the biocompatible polymer to create a suspending vehicle;
wherein the suspending vehicle is substantially free of stiff gels upon contact with an aqueous medium. - View Dependent Claims (30, 31, 32)
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Specification