Body fluid flow control device

摘要

An implantable apparatus for controlling fluid flow within a host body includes a constricting member with a plunging member for reducing fluid flow within a body canal when in a closed position. A biasing member biases the constricting member against the body canal. A pulling member counters the force exerted by the biasing member such that when activated, the constricting member is forced away from the closed position so as to allow increased fluid flow within the body canal. An activating member activates the pulling member.