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:
Sep. 12, 1989
Filed:
May. 29, 1987
Applicant:
Inventors:
Ingemar H Lundquist, Pebble Beach, CA (US);
Zoltan Tarczy-Hornoch, Berkeley, CA (US);
Thomas J Kardos, Laguna Beach, CA (US);
Assignee:
Retroperfusion Systems, Inc., Costa Mesa, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
600 18 ; 600 17 ; 604 67 ;
Abstract
Retroperfusion control apparatus for supplying arterial blood of a patient to the venous side of the patient's heart including a pump having an inlet and an outlet and a piston movable through a pump stroke for moving a liquid from the inlet to the outlet of the pump. A stepper motor is provided which drives the piston. Electronic circuitry is provided for driving the stepper motor and senses the presence of an R wave in a patient to operate the stepper motor in response to the sensed R wave.