Patil A A, Yamanashi W
Division of Neurosurgery, University of Nebraska Medical Center, Omaha.
Neurosurgery. 1994 Oct;35(4):785-7; discussion 787-8. doi: 10.1227/00006123-199410000-00034.
A new cautery system known as the electroconvergent cautery system is described. This cautery system uses a radiofrequency current of 13.56 MHz. The current is passed through an amplifier, an impedance matching system, and a loading and tuning coil into a probe. After the probe tip is touched to the tissue, the mismatch of impedance between the probe tip and the generator is minimized to almost zero, resulting in high-current density at the probe tip, which causes pinpoint heating of the tissue at the point where it is touched by the probe without spread of heat to the surrounding tissue. This heat can cut and vaporize tissue and coagulate vessels. The probe can also be used to coagulate vessels with standard surgical forceps. Because convergence of energy is used for tissue heating, a grounding pad is not needed. The system can also be used under cerebrospinal fluid or saline.
本文介绍了一种名为电会聚烧灼系统的新型烧灼系统。该烧灼系统使用13.56MHz的射频电流。电流通过放大器、阻抗匹配系统以及加载和调谐线圈进入探头。在探头尖端接触组织后，探头尖端与发生器之间的阻抗失配被最小化至几乎为零，从而在探头尖端产生高电流密度，这会导致在探头接触组织的部位使组织产生精确加热，而热量不会扩散到周围组织。这种热量可以切割和汽化组织并使血管凝固。该探头还可与标准手术镊子一起用于凝固血管。由于能量会聚用于组织加热，因此不需要接地垫。该系统也可在脑脊液或盐水中使用。
