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:
Oct. 07, 1997
Filed:
Jan. 30, 1996
Alan J Snyder, Hummelstown, PA (US);
The Penn State Research Foundation, University Park, PA (US);
Abstract
An artificial heart assembly, designed for implantation into a subject, which may be a total artificial heart or a ventricular assist device. The heart assembly has a blood inlet conduit, a blood outlet conduit, a pumping mechanism for pumping blood from the blood inlet conduit to the blood outlet conduit, and means for reversibly driving the pumping mechanism in a opposite directions over a stroke having a length defined by a pair of endpoints. The driving means has a motor which is braked by a braking means which has means for determining the actual speed of the pumping mechanism, means for comparing the actual speed of the pumping mechanism with a braking speed, and means for selectively applying the brake to the motor based upon the relative magnitudes of the actual speed and the braking speed.