Study on the Instrument for Testing Radiofrequency Ablation Catheter
Journal: Journal of Clinical Medicine Research DOI: 10.32629/jcmr.v4i2.1234
Abstract
Objective — To design a detection instrument for detecting the quality of radiofrequency ablation electrode, which can quickly detect the physical properties of radiofrequency ablation electrode. Methods — The DC constant current source is introduced to measure the small resistance, test whether the thermocouple is well connected, and measure the resistance between the positive and negative wires of the thermocouple at the plug (1-core and 2-core) to determine whether the thermocouple is well connected. The resistance of the good product is about 40Ω. Detect whether the inner tube and outer tube of RF ablation are in good physical contact through resistance, and judge whether there is physical contact between the inner tube and outer tube by detecting the resistance between the positive conductor of thermocouple (2 cores) and RF connecting wire (3 cores). When in good contact, the resistance is about 0.5 Ω; Measure the short circuit between 4~8 cores of the plug and judge whether the code is correct. The measurement method of pipeline absolute tightness is adopted to detect the change of pipeline pressure. Results — The developed radiofrequency ablation electrode detector can accurately measure the resistance, circuit and pipeline tightness of radiofrequency ablation, and can meet the requirements of detection accuracy. Conclusion — The quality of the prototype is stable and can meet the needs of users.
Keywords
radiofrequency ablation, electrode detection, thermocouple, tightness
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[3] Yu Simon Chun Ho et al. Transarterial Ethanol Ablation for Small Hepatocellular Carcinoma (≤ 3 cm): A Comparative Study Versus Radiofrequency Ablation [J]. Cardiovascular and interventional radiology, 2020, 43(5): 732-739.
[4] Toshihiro Iguchi et al. Survival Outcomes of Treatment with Radiofrequency Ablation, Stereotactic Body Radiotherapy, or Sublobar Resection for Patients with Clinical Stage I Non–Small-Cell Lung Cancer: A Single-Center Evaluation [J]. Journal of Vascular and Interventional Radiology, 2020, 31(7): 1044-1051.
[5] Khan Dost et al. Clinically Significant Hematoma as a Complication of Cooled Radiofrequency Ablation of the Genicular Nerves; a Case Series.[J]. Pain medicine (Malden, Mass.), 2020, 21(7): 1513-1515.
[6] MASARU H. Tu1534 - Comparable Effect of Radio Frequency Ablation Therapy to Liver Resection for Liver Metastasis from Colorectal Cancer [J]. Gastroenterology, 2018, 154(6): 954-955.
[7] LIU J, LIU Y, HUANG J, et al. Real-time monitoring of contrast-enhanced ultrasound for radiofrequency ablation [J]. Open Medicine, 2017, 12(1): 474-480.
[8] Weiwei Wu, Li Peng, Shuicai Wu, et al. Design and implementation of a surgical planning system for radiofrequency ablation of brain lesions [J]. Medical and Health Equipment, 2015, 36(03):14-16+20.
[9] Ben-David Eliel; Nissenbaum Isaac; Gurevich Svetlana; et al. Optimization and characterization of a novel internally-cooled radiofrequency ablation system with optimized pulsing algorithm in an ex-vivo bovine liver.[J]. International journal of hyperthermia: the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group, 2019, 36(2): 81-88.
[10] Kamar Belghazi et al. Self-sizing radiofrequency ablation balloon for eradication of Barrett's esophagus: results of an international multicenter randomized trial comparing 3 different treatment regimens [J]. Gastrointestinal Endoscopy, 2019, 90(3): 415-423.
[11] CHU KATRINA F, DUPUY DAMIAN E. Thermal ablation of tumours: biological mechanisms and advances in therapy[J]. Nat Rev Cancer,2014,14(3): 199-208.
[12] CHEN X, LIU HP, LI M, et al. Advances in non-surgical management of primary liver cancer [J]. World J Gastroenterol, 2014, 20 (44): 16630-16638.
[13] Man Zhang et al. Simulation of temperature field for temperature-controlled radio frequency ablation using a hyperbolic bioheat equation and temperature-varied voltage calibration: a liver-mimicking phantom study [J]. Physics in Medicine and Biology, 2015, 60(24): 9455-9471.
[14] State Food and Drug Administration. YY0776-2010 liver radiofrequency ablation therapy equipment [S]. Beijing: China Standard Publishing House, 2011.
[15] State Food and Drug Administration. YY0778-2010 radiofrequency ablation catheter[S]. Beijing: China Standard Publishing House. 2010.
[16] Gal S. and Cathébras G. and Bertrand Y. Measurement of small resistance variations using technique [J]. Electronics Letters, 1998, 34(16): 1578-1578.
[17] Wilson W C, Coffey N C, Madams E I. Leak detection and Location Technology Assessment for Aerospace Applications [R]. Langley Research Center, Hampton, Virginia. Sep. 2008.
[18] Glasgow M E et al. The outcome of fundoplication in patients with GERD based on abnormal impedance testing [J]. Surgical endoscopy, 2020, 34(6): 2601-2607.
Copyright © 2023 Lei Zhang, Wenbo Lu, Jianjun Sun, Chongchong Ai, Zechen Lin, Naishui Han, Longfei Li, Yufei Jia
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