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Peripheral cardiopulmonary bypass and coronary reperfusion system

  • US 5,011,469 A
  • Filed: 08/29/1988
  • Issued: 04/30/1991
  • Est. Priority Date: 08/29/1988
  • Status: Expired due to Term
First Claim
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1. An extracorporeal bypass apparatus, comprising:

  • a venous catheter for insertion into a femoral vein, such catheter being sufficiently long and flexible to reach the atrium area of a patent'"'"'s heart;

    an arterial cannula;

    a single pump connected between the venous catheter and the arterial cannula for withdrawing blood from a patient through said venous catheter and pumping it into a patient through the arterial cannula; and

    a vent catheter for insertion into an artery sufficiently long and flexible to reach the left ventricle of the heart, said vent catheter being connected in parallel with the venous catheter connected to the pump in a manner such that the negative pressure developed by said pump is applied to the venous catheter and the vent catheter,said venous catheter and said pump being constructed such that substantially all of the patient'"'"'s blood which would normally be returned to the heart is bypassed through the venous catheter, and the blood reaching the left ventricle of the heart is withdrawn through the vent catheter so that the ventricle is decompressed;

    said vent catheter being a thin-walled flexible tube which has a coiled distal end, which is adapted to conform to a guide wire used in inserting the vent catheter.

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