RITA-1500X and ERBE-VIO50C RF generator drive Habib EndoHPB radiofrequency catheter ablation: a comparison study

Objective: To investigate the safety and reliability of RITA-1500X and ERBE-VI050C radiofrequency generator in performing biliary radiofrequency ablation. Methods: RITA-1500X and ERBE-VI050C radiofrequency generator were separately connected to the Habib-EndoHPB radiofrequency ablation catheter. Radiofrequency ablation catheter was used to heat 5 ml physiological saline in vitro, the temperature of the saline were determined at 1, 1.5 and 2 minutes; then a piece of pig liver was ablated in vitro for 2 minutes, and the ablation extent was estimated. The catheter electrode short-circuit test was used to assess the concordance of the status indicated by the radiofrequency generator and the actual working status of the catheter. The clinical interventional biliary ablation results produced by RITA-1500X or ERBE-VI050G radiofrequency generator were evaluated. Results: The increased degree of saline temperature by RITA-1500X radiofrequency generator was not proportional to the time of heating, and the output power of ERBE-VI050C radiofrequency generator was relatively constant. The long axis infiltration length of ablated extent created by RITA-1500X and ERBE-VI050C radiofrequency generator was 25.4 (0.5) mm and 28.6 (1.1) mm respectively, and the short axis diameter of ablated extent was 9.6 (0.9) mm and 11.2 (0.4) mm respectively. The ablated extent produced by RITA-1500X radiofrequency generator was more close to the designed scope. The catheter electrode short-circuit test and the clinical observation indicated that the status indicated by RITA-1500X radiofrequency generator was very consistent with the actual working status of the catheter. Conclusion: Compared with RITA-1500X radiofrequency generator, RITA-1500X radiofrequency generator drive Habib EndoHPB radiofrequency catheter ablation is more safe and reliable in performing biliary ablation procedure. (authors)