US Patent 7048702 External counterpulsation and method for minimizing end diastolic pressure

An external counterpulsation apparatus and method for minimizing end diastolic pressure includes a fluid distribution assembly interconnecting a plurality of inflatable devices adapted to be received about the lower extremities of the patient and a source of compressed fluid to be distributed by the fluid distribution assembly to the inflatable devices. The controller in communication with the fluid distribution assembly controls inflation and deflation of the inflatable devices to minimize end diastolic pressure. The controller controls deflation of the inflatable devices without reducing venous return and then minimizes energy spent in ventricular isovolumetric contraction. Further, the controller controls inflation of the inflatable devices to inflate a distal inflatable device prior to inflating a proximal inflatable device. Further, the controller controls a plurality of inflation functions including rate of pressure applied, the magnitude of pressure applied, the duration of time that external pressure is applied, and the duration of time to deflate the inflatable devices.