Abstract: An optical system for a stereo video endoscope including: first and second lens system channels each having optical elements in identical configurations, the optical elements being arranged in a same position along first and second optical axes, respectively, an optical axis of first and second optical elements coincide with the first and second optical axes, respectively, first and second cross-sectional areas of the first and second optical elements are inscribed in first and second circumferential circles, respectively, centers of first and second circumferential circles each coincide with the first and second optical axes, respectively, to define a maximum radius of the first optical element and the second optical element, the first and second circumferential circles overlap one another, and circumferential shapes of the first and second optical elements deviate from the first and second circumferential circles circumscribing them such that the first and second optical elements do not contact.

Abstract: An endoscope including a first substantially hollow cylindrical body and a second substantially hollow cylindrical body, wherein the first body and the second body at least partially overlap coaxially, and wherein between the first body and the second body a round cord seal is disposed, which is sealingly disposed between a first sealing surface of the first body and a second sealing surface of the second body. Wherein, the first sealing surface is conical.

Abstract: A video endoscope including an elongated shaft, wherein the shaft includes at least one shaft tube, a magnetic ring surrounding the shaft tube is freely rotatably arranged in a region of a proximal end of the shaft tube, and the magnetic ring is axially fixed between a proximal stop shoulder of the shaft tube and a distal retaining body, and wherein the retaining body having a sleeve-like configuration and is placed onto the shaft tube from the distal direction. The shaft tube has an indentation in a region of the retaining body, and the retaining body is fastened on the shaft tube by a fastener which penetrates the retaining body and extends into the indentation.

Abstract: A video endoscope including an elongated shaft, a main body, a cable for conducting control signals, video signals and/or illumination light, wherein the cable includes: a core having an optical fiber bundle, a video signal line, and/or a control signal line; a mechanical protective layer; and a sheath tube; a junction body sealingly inserted into the main body on to sealingly receive the sheath tube; an anti-kink sleeve disposed around the sheath tube to engage over the junction body, a clamping ring supported on the junction body pulled towards the main body by a first clamping nut presses the junction body against a round cord seal between the junction body and the main body and presses the anti-kink sleeve against the junction body such to seal a cavity between the anti-kink sleeve and the junction body.

Abstract: A video endoscope with lateral viewing direction including a shaft having proximal and distal ends, an objective lens in the distal end, an image sensor, and a main body at the proximal end. Where a first grip rotationally fixed relative to the shaft and the main body to rotate the shaft and the main body to change the viewing direction of the objective lens. A second grip is disposed on the main body to be rotatable relative to the shaft and the main body to maintain a horizontal position of the image sensor when the viewing direction is changed. An annular seal is disposed between the second grip and the main body and/or the first grip. The seal includes a circumferentially wound coil spring having windings oriented such that a surface vector of a surface spanned by a single winding points substantially in a circumferential direction of the seal.

Abstract: An endoscope including: a retaining body; and a flexible printed circuit board providing an electrical connection between an electrical component arranged in a proximal end region of the endoscope and an internal electrical terminal provided in the proximal end region distanced along a longitudinal axis from the electrical component. The flexible printed circuit board includes: a first circuit board section extending in a longitudinal axial direction and guided at least partially in a cavity in the endoscope by the electrical terminal in the direction of the electrical component, and a second circuit board section arranged on the retaining body and guided along a lower side of the retaining body directed in a direction of an internal space in the endoscope and along an upper side of the retaining body directed in a direction of an outer sleeve of the endoscope towards the electrical component, and electrically contacts the electrical component.

Abstract: A connection body for use with an endoscope that provides an electrical connection between at least one electrical component arranged in a proximal end region of the endoscope and an internal electrical connection provided in the proximal end region. The connection body including: a dimensionally stable three-dimensional circuit carrier: and a flexible elongate circuit board. Where, in a first region of the circuit carrier, the electrical component is mechanically directly connected to the circuit carrier and is contacted by conductor tracks provided in the circuit carrier; in a second region different from the first region, a first end of the circuit board is mechanically directly connected to the circuit carrier and contacts the conductor tracks for electrical connection to the electrical component and a second end of the circuit board opposite the first end in a longitudinal direction of the circuit board, contacts the internal electrical connection.

Abstract: A plug connection between distal video and proximal cable units, including: a plug; and a connector inserted into the plug, the plug is a glass cast part arranged at a proximal end of the distal video unit; the connector is arranged at a distal end of the proximal cable unit; the plug is connected to a housing of the distal video unit,_has electrical feedthroughs and is connected on a distal side to a first flexboard in the distal video unit and has a connector receptacle; the connector is enclosed in a housing formed to fit the connector receptacle; the connector has a plurality of electrical feedthroughs arranged in accordance with an arrangement of the electrical feedthroughs of the plug; and the electrical feedthroughs are connected proximally to a second flexboard having a planar solder pad structure having solder pads, to which signal and connecting cables are soldered.

Abstract: A deflection prism assembly for an endoscope having a lateral viewing direction. The deflection prism assembly including: a prism holder; and a deflection prism which is received in the prism holder. The deflection prism is formed of a glass. The prism holder includes a reception component and an adjustment component, where the reception component is formed of a ceramic and the adjustment component is formed of a metal. The deflection prism is attached to the reception component and the adjustment component provides a stop for the deflection prism in an axial direction.

Abstract: A video endoscope including an elongate shaft having a distal end and a proximal end; a tubular sleeve arranged in the shaft so as to be rotatable about a longitudinal axis of the shaft; a connector arranged at the proximal end of the shaft; an objective arranged at the distal end of the shaft; at least one image sensor arranged in the shaft so as to be proximal to the objective, the at least one image sensor being surrounded by the tubular sleeve; a flexible signal line connecting the at least one image sensor to the connector; and a fastener for detachable fastening the flexible signal line.

Abstract: A deflection prism assembly for an endoscope having a lateral viewing direction, the deflection prism assembly including: a prism holder; and a deflection prism accommodated in the prism holder; wherein the deflection prism has a light outlet surface and an opposite light inlet surface arranged obliquely to the light outlet surface, the deflection prism further having a lateral surface extending between the light inlet surface and the light outlet surface; and the prism holder accommodates the deflection prism such that the prism holder surrounds less than all regions of the lateral surface of the deflection prism.

Abstract: An optical system for a stereo video endoscope including: first and second lens system channels each having optical elements in identical configurations, the optical elements being arranged in a same position along first and second optical axes, respectively, an optical axis of first and second optical elements coincide with the first and second optical axes, respectively, first and second cross-sectional areas of the first and second optical elements are inscribed in first and second circumferential circles, respectively, centers of first and second circumferential circles each coincide with the first and second optical axes, respectively, to define a maximum radius of the first optical element and the second optical element, the first and second circumferential circles overlap one another, and circumferential shapes of the first and second optical elements deviate from the first and second circumferential circles circumscribing them such that the first and second optical elements do not contact.

Abstract: An optical system having a viewing angle ? relative to a longitudinal axis including: a prism group to deflect incident light by reflection at first and second surfaces including prisms with mutually adjacent boundary surfaces arranged in pairs and separated by a gap, a total reflection of incident light from outside a field of view takes place at a boundary surface between a prism and a corresponding gap, the prism group has a cylindrical envelope (D), and an input-side prism is configured to have a wedge-shape with angle ? and an optical path length ?; an entry surface of the prism has a length L, which is a length of a line of intersection of the entry surface with a plane that is spanned by a central beam path; and the first prism meets the conditions: ?<cos ?·tan ?·D/2 and L<D/cos ?.

Abstract: An endoscope including: an endoscope shaft having an outer tube and an inner tube rotatable relative to each other, the outer tube radially surrounding the inner tube; a first optical assembly disposed in a distal region of the endoscope shaft and being accommodated in and/or operated by the outer tube; a second optical assembly disposed in the distal region and being accommodated in the inner tube; an axial bearing arranged between the outer tube and the inner tube in a proximal region of the endoscope shaft wherein the axial bearing includes an outer ring associated with the outer tube and an inner ring associated with the inner tube; and a fixing device for the axial bearing, the fixing device including a first elastomer body provided for the outer ring of the axial bearing and/or a second elastomer body provided for the inner ring of the axial bearing.

Abstract: The invention relates to an electrical connection piece for a video endoscope having a hermetically closed video unit in a shaft of the endoscope, a video endoscope, and a method for producing an electrical connection in a video endoscope. The electrical connection piece according to the invention includes an at least partially flexible printed circuit board having conductive tracks, wherein the printed circuit board has a base surface with openings for contact pins of a hermetic feedthrough, and a flexible first arm and a flexible second arm that branch off in different, in particular opposite, directions from the base surface, wherein the first arm and the second arm each have a flat end surface at the respective ends facing away from the base surface, wherein the conductive tracks extend between the openings on the base surface and electrical contacting surfaces in the end surfaces.

Abstract: An endoscope including: an endoscope shaft having an outer tube and an inner tube rotatable relative to each other, the outer tube radially surrounding the inner tube; a first optical assembly disposed in a distal region of the endoscope shaft and being accommodated in and/or operated by the outer tube; a second optical assembly disposed in the distal region and being accommodated in the inner tube; an axial bearing arranged between the outer tube and the inner tube in a proximal region of the endoscope shaft wherein the axial bearing includes an outer ring associated with the outer tube and an inner ring associated with the inner tube; and a fixing device for the axial bearing, the fixing device including a first elastomer body provided for the outer ring of the axial bearing and/or a second elastomer body provided for the inner ring of the axial bearing.