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Intracardiac pumping device

  • US 9,833,550 B2
  • Filed: 12/22/2015
  • Issued: 12/05/2017
  • Est. Priority Date: 08/08/2003
  • Status: Active Grant
First Claim
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1. An intracardiac percutaneous blood pump comprising:

  • a catheter having an outer diameter and proximal and distal regions;

    a cannula coupled to the distal region of the catheter and configured to extend across a heart valve, the cannula comprising an expansible suction head with a blood inlet and having an initial state with a first outer diameter and an expanded state with a second outer diameter, the second outer diameter being larger than the first outer diameter and the outer diameter of the catheter;

    an impeller for pumping blood into the blood inlet; and

    a flexible atraumatic projection coupled to the expansible suction head, the flexible atraumatic projection being positioned distal to the expansible suction head and being configured to space the blood inlet away from interior heart walls;

    wherein the flexible atraumatic projection has a fixed outer diameter when the expansible suction head is in the initial state and retains that fixed outer diameter when the expansible suction head is in the expanded state.

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