Patent ID: 8425396

Claim:
A physiologic pulsatile pump apparatus comprising: (A) first and second operably interconnected pulsatile pumps, each of said first and second pulsatile pump comprising: (i) a housing defining a chamber having an inlet port; and (ii) a compressible-expandable bladder sealably mounted within said housing, said bladder having a receiving port and a delivery port; and (B) an actuator system connected to said first and second pulsatile pumps for operating said pumps, said actuator system comprising: (iii) a hydraulic actuating sub-assembly comprising: a. a fluid chamber containing a pressure transmissive fluid, said fluid chamber having an outlet port in communication with said inlet port of said housing; and b. an actuating member mounted within said fluid chamber for movement within said fluid chamber in a manner to generate a pulsatile pressure on said transmissive fluid so as to cause a pulsatile pressure on said bladder to vary the volume thereof; and (vi) a motor operably associated with said hydraulic actuating sub-assembly for controllably moving said actuating member thereof within said fluid chamber.