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Catheter device

  • US 9,889,242 B2
  • Filed: 12/30/2015
  • Issued: 02/13/2018
  • Est. Priority Date: 10/08/2007
  • Status: Active Grant
First Claim
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1. A percutaneous heart pump comprising:

  • a catheter;

    a radially compressible pump head having a compressed state and an expanded state;

    a rotor disposed in the pump head;

    a cover hose configured to compress the pump head into the compressed state, wherein the catheter extends through the cover hose;

    a drive shaft coupled to the rotor, the drive shaft extending through the catheter;

    a first magnet coupled to the drive shaft;

    a second magnet magnetically coupled to the first magnet;

    a motor coupled to the second magnet; and

    a magnet mounting connected to the motor and having a circular recess, wherein the second magnet is mounted in the recess;

    wherein the first and second magnets are arranged relative to one another so that a north pole of the first magnet aligns with a south pole of the second magnet, wherein the second magnet has a through bore, and wherein at least one of the first magnet and the second magnet has a cylindrical shape.

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