Electrosurgical Screen Electrode Securement and Aspiration

The patent introduces an intermediary component (such as a retaining ring, clamp, or mechanical retention structure) that mediates between the screen electrode and the insulative body. This intermediary provides a durable mechanical connection that is resistant to thermal and plasma degradation, maintaining electrode positioning stability over extended periods without direct thermal or chemical bonding that would deteriorate under plasma exposure

The patent replaces thermal bonding methods (welding, melting) and chemical bonding methods (adhesives) with a purely mechanical retention system. This mechanical system uses physical structures such as retaining rings, clamps, or interference-fit mechanisms that provide secure attachment without subjecting the bonding interface to thermal or chemical degradation from plasma exposure

The patent applies local quality by creating different functional zones around the electrode perimeter. Aspiration apertures are strategically positioned in specific locations where they can effectively remove fluid and debris without directly interfering with the vapor layer formation zone at the electrode edge. This spatial differentiation allows simultaneous optimization of both aspiration efficiency and vapor layer consistency

The patent resolves the contradiction by moving the aspiration apertures to a different spatial dimension or plane relative to the electrode edge. Instead of placing apertures directly at the edge in the same plane, the design positions them slightly offset or at an angle, allowing fluid aspiration while the electrode edge maintains its vapor-generating function without direct disruption