Re:Living Without A Pulse (Score 1)

Thank you for your comment. After spending a lot on patent lawyers, it got rejected by the patent office citing "prior art" we attempted to point out that the prior art they compared my design to differed in many fundamental ways, but after going around in circles with the patent office for a while I ran out of money and couldn't proceed. My design did not use any valves or impellors. It created a pulsatile waveform using eccentric gradual compression of silastic tubing. Nothing other than the interior tubing walls ever contacted the blood. The effect was sort of "wankel engine like" in that the effective chamber volume was gradually decreased as the pumps eccentric wound around.