Patent ID: 8932204
Filing Date: 2015-01-13
Classification: A61F

Abstract:
1. A pump adapted to be attached between a fluid reservoir and an inflatable penile cylinder of an inflatable penile prosthesis, the pump comprising: a pump bulb connected to a pump body, the pump body including a deflate valve chamber communicating with an actuator chamber, the actuator chamber including a restriction ring; an inlet valve disposed within the pump body; an exhaust valve disposed within the pump body and in fluid communication with the inlet valve; and a deflate valve disposed within the pump body between the inlet valve and the exhaust valve, the deflate valve including an end surface movable inside the deflate valve chamber and a base surface movable inside the actuator chamber, the base surface of the deflate valve including a ring engagement surface; wherein compression of the pump bulb increases fluid pressure in the actuator chamber to displace the base surface of the deflate valve away from the exhaust valve toward the inlet valve to position the deflate valve for inflation of the inflatable penile cylinder; and wherein the restriction ring of the actuator chamber is sized to engage the ring engagement surface of the deflate valve to maintain the deflate valve in a deflate mode when the base surface of the deflate valve is moved away from the inlet valve toward the exhaust valve to thus allow fluid in the inflatable penile cylinder to bypass the pump bulb and flow from the inflatable penile cylinder to the fluid reservoir.