NEUTRAL ELECTRODE FOR HF CURRENT EXPOSURE, ELECTROSURGICAL SYSTEM WITH SUCH ELECTRODE AND METHOD OF SUCH ELECTRODE MANUFACTURING Russian patent published in 2019 - IPC A61B18/16 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medical equipment, specifically to means of high-frequency surgery. Neutral electrode for exposure to high-frequency current on biological tissue comprises a substrate having first and second sides; at least one electrode located on the first side of the substrate, and a material with phase transition (MPT) for absorbing heat, located on the second side of the substrate, wherein material with phase transition is at least partially made in the form of blocks containing spongy polymer structure and located on second side of substrate at least partially at distance from each other with formation of passes. Electrosurgical system for coagulation and/or tissue cutting comprises a neutral electrode, at least one electrosurgical one, in particular, a single-pole instrument, a high-frequency generator connected to a neutral electrode and to at least one instrument. Method of producing a neutral electrode comprises steps of making a substrate, placing a mold, at least partially open from below, on the substrate, wherein casting mold comprises segments to make blocks separated from adjacent segments by webs to heat material with phase transition so that it at least partially becomes liquid, heated material is introduced with phase transition into casting mold, and mold is removed.

EFFECT: use of inventions improves heat absorption capacity to prevent tissue damage.

16 cl, 7 dwg