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Systems for recording use of structures deployed in association with heart tissue

  • US 6,221,013 B1
  • Filed: 05/02/2000
  • Issued: 04/24/2001
  • Est. Priority Date: 09/26/1997
  • Status: Expired due to Term
First Claim
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1. A system for use in connection with a diagnostic or therapeutic procedure and for determining proximity of one electrode to an other electrode while both electrodes are disposed within a body region, the system comprising:

  • an electrical energy generating element coupled to a first electrode and a second electrode to establish an electrical field between the first electrode and the second electrode;

    a third electrode located in the electric field; and

    a position-indicating element coupled to the third electrode operative to generate a proximity-indicating output, which varies according to proximity of the third electrode to the first electrode based at least in part upon voltage amplitudes sensed by the third electrode within the electrical field.

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