Hsiao Wen-Tien, Kung Chun-Ming, Chu Jan-Show, Ou Keng-Liang, Peng Pei-Wen
School of Dentistry, Taipei Medical University, Taipei 110, Taiwan.
Department of Dentistry, Cathay General Hospital, Taipei 106, Taiwan ; Department of Dentistry, Cathay General Hospital, Sijhih, Taipei 221, Taiwan ; Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.
Biomed Res Int. 2014;2014:182657. doi: 10.1155/2014/182657. Epub 2014 May 22.
Thermal injury and tissue sticking are two major concerns in the electrosurgery. In the present study, the effect of lateral thermal injury caused by different electrosurgical electrodes on wound healing was investigated. An electrosurgical unit equipped with untreated (SS) and titanium oxide layer-coated (TiO2-coated) stainless steel needle-type electrodes was used to create lesions on the rat brain tissue. TiO2 layers were produced by radiofrequency plasma and magnetron sputtering in the form of amorphous (TO-SS-1), anatase (TO-SS-2), and rutile (TO-SS-3) phase. Animals were sacrificed for evaluations at 0, 2, 7, and 28 days postoperatively. TO-SS-3 electrodes generated lower levels of sticking tissue, and the thermographs showed that the recorded highest temperature in brain tissue from the TO-SS-3 electrode was significantly lower than in the SS electrode. The total injury area of brain tissue caused by TO-SS-1 and TO-SS-3 electrodes was significantly lower than that caused by SS electrodes at each time point. The results of the present study reveal that the plating of electrodes with a TiO2 film with rutile phases is an efficient method for improving the performance of electrosurgical units and should benefit wound healing.
热损伤和组织粘连是电外科手术中的两个主要问题。在本研究中，研究了不同电外科电极引起的侧向热损伤对伤口愈合的影响。使用配备未处理（SS）和二氧化钛层涂层（TiO₂涂层）不锈钢针型电极的电外科设备在大鼠脑组织上造成损伤。TiO₂层通过射频等离子体和磁控溅射以非晶态（TO-SS-1）、锐钛矿（TO-SS-2）和金红石（TO-SS-3）相的形式产生。在术后0、2、7和28天处死动物进行评估。TO-SS-3电极产生的组织粘连水平较低，热成像图显示，TO-SS-3电极在脑组织中记录的最高温度明显低于SS电极。在每个时间点，TO-SS-1和TO-SS-3电极引起的脑组织总损伤面积明显低于SS电极。本研究结果表明，用金红石相的TiO₂薄膜电镀电极是提高电外科设备性能的有效方法，应该有利于伤口愈合。
