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Catheter with variable magnetic field generator for catheter guidance in a subject

  • US 7,686,767 B2
  • Filed: 01/29/2003
  • Issued: 03/30/2010
  • Est. Priority Date: 01/29/2002
  • Status: Active Grant
First Claim
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1. A catheter comprising:

  • a catheter body configured for insertion in and movement through a living subject situated in a static magnetic field, said catheter body having a tip; and

    a magnetic field generator disposed at said tip that generates a variable magnetic field having a field strength and a field direction, said magnetic field generator comprising at least one electromagnet having a magnetic core and a coil with said coil having coil leads conducted through said catheter body and configured to proceed outside of the living subject to supply current to the coil from outside of said living subject that varies said magnetic field at said tip in at least one of said field strength and field direction to produce said movement of said catheter through said living subject exclusively by interaction of said magnetic field generated by said magnetic field generator with said static magnetic field.

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