发明名称 |
MULTI-LAYERED GRADIENT VAGINAL RING |
摘要 |
Multi-layered vaginal rings 2 comprising silicone elastomers and pharmaceutically active ingredients are disclosed. The rings comprise a number of layers, at least one of which contains a pharmaceutically active ingredient, and each of which is a silicone elastomer. The multiple layers preferably are produced from these layers of different compositions, including an inner layer 4, a middle layer 5, and an outer layer 6. After extrusion and simultaneous curing, however, the ring 2 includes a contiguous body which comprises a continuous silicone body providing unimpeded diffusion of the pharmaceutically active ingredient from the inner layer (s) 4 to the outer layer (s) 6. Methods of producing these vaginal rings and of using them are also disclosed. |
申请公布号 |
HK1169614(A1) |
申请公布日期 |
2014.07.25 |
申请号 |
HK20120110401 |
申请日期 |
2012.10.19 |
申请人 |
THE POPULATION COUNCIL INC. |
发明人 |
VARIANO, BRUCE;SPECK, JEFFREY;SALLENT, MARIA, TERESA;EVANS, SIMONE |
分类号 |
A61K |
主分类号 |
A61K |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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