发明授权
US5135523A Delivery system for administering agent to ruminants and swine 失效
给予反刍动物和猪的代理的交付系统

Delivery system for administering agent to ruminants and swine
摘要:
A delivery system is disclosed for delivering a beneficial agent to an animal. The delivery system comprises a wall that surrounds a lumen, said wall comprising a composition that limits the passage of fluid into the system and a composition that permits the passage of fluid into the system. The lumen comprises a beneficial agent and an expandable member. The delivery system comprises an exit means for delivering the beneficial agent.
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