Patent ID: 7521064
Filing Date: 2009-04-21
Classification: A61F,A61K,A61P

Abstract:
1. An intravaginal contraceptive device, comprising: a biocompatible and biodegradable polymeric support structure having an annular shape surrounding an opening, constructed and configured to be inserted into a mammal's vagina, the support structure constructed and formed of materials such that the structure is capable of remaining in a vagina for three days, while degrading, but without dissolving completely, the polymeric support structure comprising poly-DL-lactide; a non-hormonal spermicidal and/or spermiostatic composition disposed within the support structure, said composition comprising at least one spermiostatic/spermicidal agent selected from the group consisting of magnesium chloride, calcium chloride, ferrous sulfate, copper sulfate and ferrous gluconate; the support structure with the composition disposed therein, constructed and formed of materials effective to break down, while in the vagina, and thereby provide sustained release of a spermicidally or spermiostatically effective amount of the composition for three days, wherein the composition comprises an effective amount of ascorbic and/or a derivative thereof to increase the viscosity of cervical mucus after it is inserted into a mammal's vagina.