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:
Dec. 11, 1990
Filed:
Aug. 15, 1988
John W Holfert, Bountiful, UT (US);
Donald B Olsen, Salt Lake City, UT (US);
University of Utah Research Foundation, Salt Lake City, UT (US);
Abstract
An artificial heart device for producing heart pumping action as part of a total artificial heart implant comprising a semi-rigid housing of approximate ellipsoidal configuration which encloses a pumping volume divided into a blood chamber and a pumping chamber by a deformable diaphragm structure which is symmetrically positioned about a short axis of the ellipsoid housing. This diaphragm structure is also configured as a hemiellipsoidal structure, allowing the device to have smaller dimensions but to maintain the required high stroke volume necessary to function within a human circulatory system. The device includes valved inlet and outlet openings coupled through the housing and in communication with the blood chamber. A pneumatic pump is coupled to the pumping chamber through a series of concentric vents formed within the base of the artificial heart device.