Surgery – Cardiac augmentation – With condition responsive means
Patent
1990-05-14
1991-10-22
Cohen, Lee S.
Surgery
Cardiac augmentation
With condition responsive means
600 16, A61M 100
Patent
active
050591673
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.
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Kardos Thomas J.
Lundquist Ingemar H.
Tarczy-Hornoch Zoltan
Cohen Lee S.
Retroperfusion Systems, Inc.
Schaetzle Kennedy J.
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