Patent ID: 7846083
Filing Date: 2010-12-07
Classification: A61M

Abstract:
1. A blood pump, for placement in an incision in an aorta such that part of the pump after placement is in contact with blood passing through the aorta and being inflated and deflated to provide left ventricular assistance, the pump comprising: an elongate shell having a generally elliptical shape, an outer shell surface which is convex, an inner shell surface which is concave, with a peripheral side edge located between the outer shell surface and the inner shell surface and terminating in a bead edge, and a passage in fluid communication between the outer shell surface and the inner shell surface; an airtight membrane having an inner membrane surface facing the inner shell surface and an outer membrane surface facing away from said shell; and a membrane edge bonded to said shell along a region of the outer shell surface adjacent to the bead edge to form an enclosed internal chamber in fluid communication with said passage, said membrane edge looped with a maximum linear span of curvature that is greater than a maximal transverse linear extent of said bead edge.