Fallopian tube occlusion in rabbits with silicone rubber

A new system for transcervically blocking the Fallopian tubes with cured-in-place silicone rubber has great potential for fertility control. Good retention, antifertility efficacy, and retrievability were observed in rabbits, and no adverse tissue reactions were seen in oviducts containing silicone elastomer. Continuing studies with rabbits and rhesus monkeys attempt to determine long term efficacy and histologic changes.