Abstract: The transurethral dissection electrode has a shank and an electrode head located at the distal shank end. The electrode head essentially consists of at least one distally tapering truncated cone body with two oppositely lying flattenings.

Abstract: A device for treating benign prostatic hyperplasia by heat treatment has an elongated contact applicator (10) with a heating tip at its free end (18), the tip being insulated by thermal insulation from the rest of the contact applicator, and a control device for feeding electric power to the contact applicator (10) is provided in such a manner that the heat given off by the jacketed heating conductor is restricted to a heating region (15) adjacent to the free end (18) of the contact applicator. The control device (20) comprises a control unit for controlling the feeding of electric power in accordance with a preset program. The heating region (15) can be brought into direct or indirect contact with the tissue area (2, 3, 4) to be treated.

Abstract: A method of treating benign prostatic hyperplasia employs the steps of inserting a diffusing light guide into a prostrate lobe and providing laser power to the diffusing light guide in order to necrose surrounding tissue. The diffusing light guide can be inserted into the central or lateral prostrate lobes by inserting a needle and a trocar transperineally into the middle of the lateral lobe, removing the trocar, inserting the diffusing light guide, and monitoring the position of the needle, trocar, and diffusing light guide using ultrasound. The diffusing light guide can also be inserted into the central or lateral prostrate lobes transurethrally and positioned with the aid of an urethroscope.