Patent ID: 7803105
Filing Date: 2010-09-28
Classification: A61M,G06F,G16H,G16Z

Abstract:
1. A method of pumping blood, comprising providing a pump having an inlet port, a discharge port adjacent to the inlet port and an elastic bladder defining a pumping chamber, the bladder having plural elements comprised of materials of varying physical characteristics, and a pump operating system associated with the bladder, the bladder and operating system adapted to control to the direction, magnitude and timing of movement of various portions of the bladder, initially drawing blood into the pumping chamber through the inlet port by sequentially expanding portions of the bladder, directing blood flow from the inlet port to wash across and past the discharge port, directing the blood flow through the pumping chamber in a generally continuous curvilinear pattern, sequentially contracting portions of the bladder to pump blood out of the pumping chamber through the discharge port, and directing the blood flow to wash across and past the inlet port as it is being ejected out the discharge port.