Patent ID: 7238151
Filing Date: 2007-07-03
Classification: A61M

Abstract:
1. A heart assist system for obtaining a desired end-systolic left ventricular pressure, in a heart containing a mitral valve and an aortic valve, the system comprising: a. a continuous, axial-flow blood pump having an impeller, and a drive stator having magnets the pump for volume unloading the left ventricle of the heart, the impeller capable of being implanted completely inside of the descending thoracic aorta and the drive stator configured to be placed around the outside of the aorta, b. a ventricular pressure derivative-feedback controller connected to the pump, for controlling the pump impeller's speed, the controller capable of being implanted in the body; and capable of sensing and reacting to closure of the mitral valve, and to closure of the aortic valve, and c. a rechargeable battery pack connected to the pump and to the controller, for providing power to the pump, the battery pack capable of being implanted in the body.