SURGICAL INSTRUMENT Russian patent published in 2017 - IPC A61B17/00 

FIELD: medicine.

SUBSTANCE: group of inventions includes the surgical instrument and method for tissue sealing and dissection by a surgical tool, relates to the field of surgery and is intended for tissue sealing and dissection. The surgical instrument comprises first and second jaws, a cutting electrode and an electrically insulated holder of the cutting electrode. The first jaw has two first sealing pads, spaced apart and limiting the first groove between each other. The second jaw has two second sealing pads, spaced apart and limiting the second groove between each other. The electrically insulating cutting electrode holder has a base located in the groove with the base surface shifted back towards the sealing electrodes located on the first sealing pads, from which a wall-like protrusion extends at a distance from the first sealing pads of the first jaw. The cutting electrode is embedded in the cutting electrode holder and has an open end surface. Jaws for opening and closing are movable in a direction (B) of movement together and apart. The second groove contains an abutment of the cutting electrode having a tissue contact surface, shifted back relative to the sealing electrodes of the second sealing pads in the closed state of jaws. Moreover, as jaws are closed, cavities for tissue accommodation are formed in direction (B) of movent between the abutment tissue contact surface and the base surface, as well as transversely to direction (B) of movement between the protrusion and the first sealing pads, and also between the protrusion and the second sealing pads. Each of the two cavities adjacent to the protrusion for tissue accommodation is vertically limited by the base and the abutment tissue contact surface. The base and the tissue contact surface are electrically insulating, and the horizontal length (H) of each of the two cavities for tissue accommodation determined by the distance between the protrusion and the respective sealing pad exceeds the width of the sealing pads.

EFFECT: invention allows working body miniaturization.

15 cl, 8 dwg