Shellock F G
7511 McConnell Ave., Los Angeles, CA 90045, USA.
Knee Surg Sports Traumatol Arthrosc. 2001 Nov;9(6):392-7. doi: 10.1007/s001670100226. Epub 2001 Jul 11.
This in vitro investigation characterized temperature changes associated with radiofrequency (RF) energy induced heating of bovine articular cartilage using temperature-controlled, monopolar (Vulcan RF system and Vulcan, TAC-S Electrothermal Probe) and bipolar (VAPR II RF system and VAPR TC RF electrode) electrosurgical equipment. The RF generators were used at the same setting (set temperature 70 degrees C; 30 W). The cartilage tissue sample was placed in a saline bath maintained at room temperature. Temperatures were recorded using fluoroptic thermometry at the RF electrode-tissue interface at 1-s intervals before, during deliver of RF energy (1- and 2-s), and after (1- to 3-s). For both electrosurgical systems the mean RF electrode-tissue interface temperatures were significantly ( P<0.05) higher than the mean baseline value during delivery of RF energy (monopolar, highest mean temperature, 65.7 degrees C; bipolar, highest mean temperature, 54.1 degrees C). In general, during and after the deliver of RF energy, the monopolar RF system produced tissue temperatures that were significantly ( P<0.05) higher than those produced by the bipolar RF system. Neither electrosurgical system exceeded the set temperature of 70 degrees C. These findings provide basic tissue temperature characteristics for the newly developed, temperature-controlled RF devices applied to articular cartilage.
本体外研究使用温度控制的单极（Vulcan射频系统和Vulcan，TAC-S电热探头）和双极（VAPR II射频系统和VAPR TC射频电极）电外科设备，对与射频（RF）能量诱导牛关节软骨加热相关的温度变化进行了表征。射频发生器在相同设置下使用（设定温度70摄氏度；30瓦）。软骨组织样本置于室温的盐浴中。在射频能量传递前（1秒）、传递期间（1秒和2秒）以及传递后（1至3秒），每隔1秒使用荧光温度测定法在射频电极-组织界面记录温度。对于两种电外科系统，在射频能量传递期间，射频电极-组织界面的平均温度均显著高于平均基线值（P<0.05）（单极，最高平均温度65.7摄氏度；双极，最高平均温度54.1摄氏度）。一般来说，在射频能量传递期间及之后，单极射频系统产生的组织温度显著高于双极射频系统（P<0.05）。两种电外科系统均未超过70摄氏度的设定温度。这些发现为应用于关节软骨的新开发的温度控制射频设备提供了基本的组织温度特征。
