METHOD FOR DETECTING ELECTRODE-OBJECT CONTACT

摘要

PROBLEM TO BE SOLVED: To provide a method for detecting contact between an electrode and an object to be measured.

SOLUTION: Catheter preferably further comprises a reference electrode that is preferably protected from making contact with tissue. The system to carry out the method further comprises a signal generator to transmit test signals to the distal tip and reference electrodes. Tissue contact is detected by comparing the signal across the tip electrode to a return electrode versus the signal across the reference electrode to a return electrode. Ablation energy may be delivered to the distal tip electrode if contact of the electrode with tissue is detected.

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