The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2007
Filed:
Feb. 21, 2003
O. Howard Frazier, Houston, TX (US);
O. Howard Frazier, Houston, TX (US);
Other;
Abstract
A heart assist system includes an axial-flow blood pump capable of being implanted in the descending thoracic aorta; a pressure-feedback controller connected to the pump, for controlling the pump, the controller capable of being implanted in the body; and 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. A method for assisting a failing heart comprises the steps of a) in response to when a measured dP/dT signal increases during systole, signaling an implanted aortic blood pump to go into a systolic mode and pump blood at a first flow rate; and b) in response to when the dP/dT signal peaks in the negative region, signaling the pump to go into a diastolic mode and pump blood at a second flow rate.