| 摘要 |
<p>A safety shield (25) for use in laparoscopic or like electrosurgical procedures where the shield (20) surrounds the active electrode (14, 18) and extends from a trocar (10) or the like to the field of view of the surgical procedure. The shield is connected to the return lead (38) via a lead impedance path which includes monitor circuitry for determining whether the shield current is associated with an abnormal condition.</p> |
