NUTOUCH™ Bipolar RF Ablators for arthroscopy use radio frequency power to generate arcing through bubbles formed between an active electrode and tissue with the tissue being vaporized by the arcing. These devices provide for the resection and ablation (bulk vaporization) of soft tissue as well as the coagulation of blood vessels. To date, bipolar ablation devices have required dedicated generators that produce power levels well beyond the capability of most standard general purpose generators. High power levels are
needed to “ignite” the ablators due to their inefficient design. Unfortunately, these high power levels may cause a significant rise in intraarticular saline temperature with an associated increase in the likelihood of thermal injury. Additionally, when using some of these devices, arcing (sparking) may occur between the active electrode and the return electrode due to the high power required for the forming of bubbles at the active electrode and the initiation of an ablative discharge.