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Title:: Research on material improvement of plasma radiofrequence electrode for shoulder soft tissue ablation

Author(s):: NIE Jiali; GU Xuelian; ZHOU Liubin; School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Keywords:: Plasma; Radiofrequence ablation; Tungsten; Electrode; Shoulder arthroscopy; Titanum; Material improvement

摘要:: 低温等离子射频治疗为肩关节疾病常用的微创治疗方法。在临床中,低温等离子射频消融电极常发生电极片脱落故障。为了提高消融电极的安全性和使用性能，本研究针对一款用于肩关节软组织低温等离子消融电极电极片进行材料改进，并对改进后的钨材料电极片的金相组织、粘附组织成分、尺寸变化、力学性能进行分析。结果表明，高熔点的钨材料在该电极中的使用性能优于钛，且有效降低手术中电极片脱落的风险，为临床使用和企业生产提供了有力参考。

Abstract:: Plasma radiofrequency ablation is a popular minimally invasive treatment for shoulder joint diseases.Electrodes′ active plate of plasma radiofrequency ablation often drops off during the operation. To improve the safety and performance of electrodes, we made material improvement of active plates for a type of plasma radiofrequency ablation′s electrodes which was used for shoulder soft tissues. Some experiments were adopted to analyse metallographic organization, adhesion composition, power performance of tungsten active plate. The research shows that high melting-point tungsten is better than titanium in this electrode.It decreases the dropping risk of active plate and make a powerful reference for clinic and manufacture.