Touch display of balloon catheter ablation electrodes by measuring balloon surface temperature

摘要

Problem to be solved: to provide improved techniques for monitoring how well the ablation electrodes of the heart balloon touch to the tissue immediately before ablation.The method is to position the expandable balloon coupled to the distal end of the catheter to a target position within the patient's organ, wherein the expandable balloon comprises one or more sensors and one or more sensors proximate to each electrode, with one or more sensors Each comprises, comprising, configured to measure the characteristics of the blood.An expandable balloon is extended at the target position.The fluid flows through the lumen of the catheter to the blood near each electrode.The time dependence of the characteristics of the blood is measured through one or more sensors close to each electrode.The processor is used to determine whether each electrode is in physical contact with the tissue based on the measured dependence of the characteristics of the blood.The display of whether each electrode is in physical contact with the tissue is output to the user.Diagram