Systems and methods for controlling catheter power based on contact force
A technology of contact force and catheter, applied in parts of surgical instruments, medical science, surgery, etc., can solve problems such as heart wall perforation and heart tissue damage
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[0041] The present invention relates to systems and catheters for cardiac catheterization in which the catheter has a sensor assembly that provides signals indicative of the position of the catheter and the pressure applied to the distal segment of the catheter (before it engages tissue and is applied by a probe to organizational stress). The distal section of the catheter also includes electrodes for applying radiofrequency energy through the catheter to ablate heart tissue at certain locations. In contrast to conventional systems for cardiac catheterization, the control system controls the amount of radiofrequency energy (e.g., the amount of ablation power) applied to the electrodes based on the amount of pressure (or contact force) applied to the distal segment of the catheter. ). By reducing the amount of ablation power as the detected contact force increases, the occurrence of excessive heating can be reduced or avoided, thereby reducing the risk of unintended damage to ...
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