Emhart Inc.

Medical Engineering Company, LLC

Robert W Wilson

William H Valls

Frank Sterpka

Richard B Droller

William E Limmer

Stanley E Dunford

Brian P Saputo

Stephen John Walker

Tani Tatum

An extracorporeal pumping method includes receiving an inlet fluid into a compressible-expandable bladder sealably mounted within a housing and moving an actuating member mounted within a fluid chamber of a hydraulic actuating sub-assembly. A pressure transmissive fluid is displaced from the fluid chamber into the housing. The method includes compressing a volume of the bladder in the housing using the transmissive fluid displaced into the housing, the compressed bladder ejecting the inlet fluid from the bladder to provide an outlet fluid under pulsatile pressure. The actuating member is moved within the fluid chamber and the displaced transmissive fluid is returned from the housing into the fluid chamber. The method includes expanding the compressed bladder in the housing and receiving additional inlet fluid into the bladder. The movement of the actuating member is controlled such that the outlet fluid exhibits a predetermined pulse rate, stroke volume, and upstroke rise time.

Extracorporeal pumping methods

Display package for lockset

Growing community of inventors

Bishop, CA, United States of America

Robert W Wilson