Monopolar Electrosurgical Instrument Plasma Ignition

The patent applies local quality by enhancing the electrical conductivity only at the distal opening region of the tubular line where the electrode is positioned, rather than making the entire line conductive. This localized enhancement creates favorable conditions for discharge ignition at the treatment site while maintaining the insulating properties of the rest of the line. The enhanced conductivity region acts as a specific zone that facilitates corona discharge formation and subsequent electric arc ignition, thereby improving ignition reliability in large-diameter lines without requiring excessively high voltages throughout the entire system.

The patent implements preliminary action by enhancing the electrical conductivity of the inner surface at the distal opening before the actual electrosurgical procedure begins. This pre-prepared conductive surface facilitates the initial corona discharge formation when voltage is applied, creating a pathway that accelerates the transition to electric arc discharge. By having the conductive surface in place beforehand, the system reduces the time required for discharge ignition without needing to continuously apply very high voltages, thus resolving the contradiction between ignition reliability and ignition time.