To evaluate the efficacy of a novel temperature control flexible ureteroscope system in the precise monitoring and control of intrarenal temperature during ureteroscopy.
We developed a novel temperature control flexible ureteroscope system (PT-Scope), including a temperature-monitoring ureteroscope and a irrigation-suction platform for temperature regulation. A porcine thermometry model was established to observe temperature changes under varying holmium laser powers (10, 20, 30W) and irrigation rates (0, 20, 50 ml/min), utilizing PCN thermometry and PT-Scope measurements, with subsequent evaluation of temperature variations at different distances from the laser fiber tip. A porcine kidney stone model was established while porcine were randomly assigned to two groups: In the temperature control group, PT-Scope was connected to the irrigation-suction platform with temperature regulation, while in the non-temperature control group without temperature regulation. Comparative analysis was performed to evaluate differences in intrarenal temperature between the two groups.
Across various laser powers and irrigation rates, the temperature measurement capability of the PT-Scope was precise, demonstrating consistency with PCN temperature measurements. The temperature obtained from the PT-Scope reflect the temperature approximately 0.05 cm away from the fiber tip, whereas temperatures close to fiber tip were significantly higher. The peak temperature of the temperature control group vs non-temperature control group were 31.70±2.609℃and 44.37±3.318℃, respectively (p<0.01). The mean temperature of the temperature control group vs non-temperature control group was 27.40±2.107℃ vs 35.9±1.921℃(p <0.01).
PT-Scope has demonstrated the capability to precisely monitor and control intrarenal temperature within a safe threshold.
Urology. 2024 Jul 11 [Epub ahead of print]
Jianghua Yang, Zhuohang Li, Cong Lai, Kewei Xu
Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510000, China., Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510000, China; Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou, Guangdong 510000, China., Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510000, China; Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou, Guangdong 510000, China; Sun Yat-sen University School of Medicine, Sun Yat-sen University, Shenzhen, Guangdong 518000, China. Electronic address: .