| 摘要 |
An electrosurgical tool for coagulating a tissue layer is disclosed, having a hand piece with an electrical coupling at one end and a head mounting a bipolar coaxial electrode at the other end. The electrode is rotatable about its long axis and has an end face where the two poles of the electrode are exposed. The end face is asymmetrically arranged with respect to the long axis and allows the same tool to be used to coagulate exposed pulp on opposite tooth faces by manually rotating the electrode. An electrosurgical unit connected to the electrical coupling powers the tool. Electrodes are interchangeable and may be straight or curved and have a dome-shaped or cut-back end face.
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