Flexible, compressed intravaginal rings, methods of making and using the same, and apparatus for making the same
First Claim
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1. A flexible, compressed intravaginal ring comprising a substantially homogeneous compressed mixture comprising a polymethacrylate, a plasticizer, a thickener, and an active agent, wherein the thickener is present in a concentration of about 2% to about 20% by weight of the flexible, compressed intravaginal ring, and wherein the polymethacrylate has a glass transition temperature of about 10°
- C. to about 50°
C.
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Abstract
The present invention is directed to flexible, compressed intravaginal rings comprising a substantially homogeneous compressed mixture comprising a polymethacrylate, a plasticizer, and an active agent, and methods of making and using the same, and apparatus for making the same.
46 Citations
28 Claims
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1. A flexible, compressed intravaginal ring comprising a substantially homogeneous compressed mixture comprising a polymethacrylate, a plasticizer, a thickener, and an active agent, wherein the thickener is present in a concentration of about 2% to about 20% by weight of the flexible, compressed intravaginal ring, and wherein the polymethacrylate has a glass transition temperature of about 10°
- C. to about 50°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13)
- C. to about 50°
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12. A method of providing an active agent to a subject, the method comprising vaginally administering a flexible, compressed intravaginal ring to the subject, wherein the flexible, compressed intravaginal ring comprises a substantially homogeneous compressed mixture comprising a polymethacrylate, a plasticizer, a thickener, and an active agent wherein the thickener is present in a concentration of about 2% to about 20% by weight of the flexible, compressed intravaginal ring, and wherein the polymethacrylate has a glass transition temperature of about 10°
- C. to about 50°
C.
- C. to about 50°
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14. A process for preparing a flexible, compressed intravaginal ring, the process comprising:
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mixing a polymethacrylate having a glass transition temperature, a plasticizer, a thickener, and an active agent at a temperature above the glass transition temperature of the polymethacrylate to form a substantially homogeneous mixture; and compressing the substantially homogeneous mixture at a temperature below the glass transition temperature of the mixture to form a flexible, compressed intravaginal ring wherein the thickener is present in a concentration of about 2% to about 20% by weight of the flexible, compressed intravaginal ring, and wherein the polymethacrylate has a glass transition temperature of about 10°
C. to about 50°
C. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification