Importance

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Abstract

An improved electrode for use with an endoscope, used for simultaneously vaporizing, coagulating and cutting of tissue. The construction of the electrodes is such that the connecting end joins an elongated stem having a conductive center conductor, a majority of which is enclosed by a cover constructed from nonconductive material for the purpose of insulating the conductor from the endoscope conduit, telescope and resectoscope sheath. The cover may have an insulated saddle shaped extension for use in guiding a telescope. The conductor divides into two insulated conductive branches, and then exits the insulative cover forming a loop at a distal end of the electrode. The distal end portion of the conductive loop may angle away from the axial direction of the electrode, and the loop is completed with a straight conductive portion upon which an electrode tip is rotatably mounted. Outward conductive tip surfaces have RF energy director points for increasing power density of RF energy coupled thereto from the conductor. The high power density vaporizes surface tissue, and simultaneously coagulates the underlying tissue as well.

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First Claim