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Aortically located blood pumping catheter and method of use

  • US 4,919,647 A
  • Filed: 10/13/1988
  • Issued: 04/24/1990
  • Est. Priority Date: 10/13/1988
  • Status: Expired due to Fees
First Claim
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1. Apparatus for disposition within the aorta of a living being to effect the pumping of blood through at least a portion of the being'"'"'s vascular system, said apparatus comprising an elongated catheter having a distal end portion, said catheter being of sufficiently small diameter to enable it to be freely located within the aorta so that its distal end portion is at a predetermined position spaced away from and not in contact with the aortic valve, said apparatus comprising pump means located at said distal end portion, barrier means located at said distal end portion, and drive means coupled to said pump means for operating said pump means, whereupon blood is made to flow through said aorta, said distal end portion of said apparatus comprising an inlet in fluid communication with said aorta distally of said pump means and an outlet in fluid communication with said aorta proximally of said pump means, said barrier means comprising conformable wall means for closely engaging the inner periphery of said aorta at said predetermined position to ensure that substantially all of the blood flowing through the aorta flows into said inlet to said pump means and out said outlet from said pump means and not around the exterior of the distal end portion of said apparatus.

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