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Tissue contact and thermal assessment for brush electrodes

  • US 7,819,870 B2
  • Filed: 12/28/2006
  • Issued: 10/26/2010
  • Est. Priority Date: 10/13/2005
  • Status: Expired due to Fees
First Claim
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1. A brush electrode for tissue contact assessment comprising:

  • a plurality of flexible filaments adapted to transfer electrical energy to tissue;

    at least one piezoelectric sensor embedded among the plurality of flexible filaments, the at least one piezoelectric sensor extends beyond a sheath but for a shorter distance than the flexible filaments to isolate the at least one piezoelectric sensor from direct contact with the tissue, the at least one piezoelectric sensor responsive to contact stress of the flexible filaments by generating electrical signals corresponding to the amount of contact stress.

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