Thermal injury is the most important mechanism of lesion formation during radiofrequency catheter ablation procedures. Irreversible tissue injury requires heating to approximately 50 °C. Temperatures above 100 °C result in coagulum formation. As temperature plays a major role during radiofrequency catheter ablation procedures, temperature monitoring has been recommended as a tool to help catheter ablation procedures. The results of recent clinical studies show that electrode temperatures do not vary at successful and failed ablation sites; electrode temperature does not predict or remove the possibility of arrhythmia recurrence .
Development of innovative fibers for mid-IR spectral range paves way for a number of promising fiber applications ranging from 2 to 18 µm. Many years of art photonics’ research and development for reliable IR-fiber technologies resulted in the final selection of the main IR-materials suitable for production of mid IR-fibers of optical performance acceptable for pragmatic applications.