Abstract: A bipolar electrode for a resectoscope includes a proximal contact portion, a middle portion adjoining the proximal contact portion and a distal end portion adjoining the middle portion. The bipolar electrode includes an active electrode and a neutral electrode. The neutral electrode has a hollow cylindrical shape in the middle portion and coaxially surrounds the active electrode. The proximal contact portion includes a first contact of the active electrode and a second contact of the neutral electrode. The neutral electrode is surrounded by a first insulation from the proximal contact portion to the distal end portion. Both a first end region of the active electrode and a second end region of the neutral electrode are exposed at the distal end portion, so that an electrical voltage applied via the contacts is applied directly between the two end regions.

Abstract: An endoscope is provided, comprising a first tube whose distal end is sealed with a cover glass disposed in a mount and an electric heating system for heating the cover glass, with the heating system comprising two electric connections which can be connected with a power source, and an electrically conductive coating which is applied to the inside of the cover glass and comprises two mutually spaced contact sections, of which one each is electrically connected with one of the connections, and with the mount being electrically conductive and a first of the two contact sections being electrically connected via the mount with the associated connection.

Abstract: An endoscope is provided, comprising a first tube (11) whose distal end is sealed with a cover glass (15) disposed in a mount (14) and an electric heating system for heating the cover glass (15), with the heating system comprising two electric connections (6, 7) which can be connected with a power source, and an electrically conductive coating (22) which is applied to the inside (19) of the cover glass (15) and comprises two mutually spaced contact sections (23, 24), of which one each is electrically connected with one of the connections (6, 7), and with the mount (14) being electrically conductive and a first (23) of the two contact sections (23, 24) being electrically connected via the mount (14) with the associated connection (6, 7).