| 摘要 |
<p>An electrosurgical generator (10) comprises a source of electrosurgical current and output electrode circuitry (12) having an active electrode (22) for applying the electrosurgical current to a patient (26) and a return electrode (24) for returning the current to the source (18), and isolating circuitry for electrically isolating signal processing circuitry connected between the output electrode circuitry (12) and a reference potential such as ground (36) where the isolating circuitry includes an optical power supply (46) for optically powering the signal processing circuit; and an optical output coupler for optically coupling output signals for the signal processing circuit to the electrosurgical current source. The signal processing circuitry may include a handpiece switching circuit and/or a return electrode monitor circuit. Improvements in the foregoing circuits are also disclosed.</p> |
