Abstract: A set of prisms with a variable viewing direction including: three prisms; the first and third prisms each have a light entrance, mirror surface and light exit surfaces, the second prism has a beam path surface having light entrance and exit regions and at least two mirror surfaces, the first prism is pivoted relative to the second prism about an axis of rotation that runs through the mirror surface of the first prism and one of the at least two mirror surfaces of the second prism, and the third prism is immovably arranged with respect to the second prism, and the second prism is sectionally wider than the first and/or third prisms transversally to a beam path such that at least one lateral wider section of the single beam path surface of the second prism extends on at least one side beyond the light entrance surface of the third prism.

Abstract: A swing prism for an endoscope with a variable viewing direction, the swing prism including: a flat light inlet surface, a flat light outlet surface, and a flat mirror surface, wherein the flat light inlet surface and the flat light outlet surface are arranged at a 90° angle relative to each other and are each arranged at a 45° angle relative to the flat mirror surface, the swing prism is configured as a cylinder-section-shaped body with a base surface configured as a circle segment, and a cylindrical axis of the cylinder-section-shaped body is perpendicular to the flat light outlet surface, and in a projection onto the flat light outlet surface, the flat light inlet surface constitutes a chord which delimits the circle segment.

Abstract: An endoscope including: a shaft tube; a fibre tube disposed within the shaft tube; an image guide having a distal objective, the image guide being disposed within the shaft tube; and an optical fibre bundle disposed in a free cross-section between the fibre tube and the shaft tube. Wherein the fibre tube has an elongate cross-section.

Abstract: The invention relates to an electromagnetic actuator for a surgical or medical instrument, the actuator having a stator (19) and a displaceable element (10), which at least partially comprises a paramagnetic or ferromagnetic material and can be displaced from a first position into a second position by applying an electromagnetic field. The invention is characterized in that the displaceable element (10) is or will be held in the first or in the second position by a permanent magnet.

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: An endoscope including: a shaft having an outer tube and an inner tube, the inner tube being arranged inside the outer tube; and a contact-free magnetic coupling. The contact-free magnetic coupling including: an outer coupling part arranged concentrically with the outer tube, the outer coupling part being arranged outside the outer tube in a radial direction; and an inner coupling part arranged concentrically with the inner tube, the inner coupling part being arranged inside the inner tube in the radial direction; and one or more of light-guiding fibers and electrical conductors are disposed longitudinally within a gap between the outer tube and the inner tube. Where the inner coupling part is configured to be one or more of translatorily and rotationally moved by means of a magnetic operative connection between the outer coupling part and the inner coupling part; and the magnetic operative connection through the gap is rotationally non-symmetric.

Abstract: A bistable electromagnetic actuator including: a tube; a stator arranged outside the tube, and a rotor mounted in the tube so as to be displaceable axially in the longitudinal direction, is the rotor being at least partially formed of one or more of a paramagnetic and ferromagnetic material, the rotor being reversibly moved between a first position and a second position by applying an electromagnetic field. Wherein the stator includes: two ring permanent magnets that are axially polarized in opposite directions, a coil for generating the electromagnetic field, and a magnetic return element having two stator pole shoes. Wherein, the magnetic return element with the stator pole shoes encloses the coil, one of the stator pole shoes is arranged on each of two sides of the coil between the coil and ring permanent magnets, the rotor has two rotor pole shoes, and an axial width of the stator pole shoes is smaller than an axial width of the rotor pole shoes.

Abstract: A hermetic feedthrough for a video endoscope for feeding electrical lines from a first partial space into a second partial space, the hermetic feedthrough including: a partition wall for hermetically sealing the two partial spaces, and a printed circuit board produced by a thin-film technique and in which the electrical lines are embedded in a plastic, is cast with a plastic compound in a mold and post-cured, wherein the plastic compound forms the partition wall.

Abstract: An electromagnetic actuator for a medical instrument including: a stator; and a movable element, at least partly composed of a paramagnetic and/or a ferromagnetic material, and which can be reversibly moved from a first to a second position by the application of a switchable magnetic field, wherein the stator and the movable element have annular distal and proximal pole shoes corresponding to each other, wherein the distal pole shoes and/or the proximal pole shoes of the stator and the movable element are aligned with each other in an overlapping manner in the first and/or the second position, and the distal pole shoes and/or the proximal pole shoes of the stator and the movable element have a structure in the circumferential direction on the surfaces of pole shoes facing each other, with the structures corresponding to each other.

Abstract: An electromagnetic actuator for a medical instrument. The electromagnetic actuator including: a stator; a movable element, which at least partially comprises one or more of a paramagnetic and ferromagnetic material and which is movable from a first position to a second position by the application of an electromagnetic field, and a tube movably supporting the movable element in such a way that the movable element is longitudinally movable, wherein the tube comprises a ferromagnetic material.

Abstract: An endoscope including an endoscope shaft closed by a cover glass; an optical system arranged in the endoscope shaft, the optical system including at least one prism located proximally to the cover glass; a prism holder for holding the optical system and mounted so as to be pivotable about a rotation axis perpendicular to a longitudinal axis of the endoscope shaft, wherein the prism holder has at least a portion having a circular circumference with a toothed arrangement; an elongated adjustment element movable along the longitudinal axis of the endoscope shaft and having a mating toothed arrangement for engagement with the toothed arrangement of the prism holder, the mating toothed arrangement being formed at least on a distal portion; wherein at least the distal portion of the adjustment element is bendable such that it is guided in a curved guide channel formed at least partially around the prism holder.

Abstract: An actuator for a surgical instrument. The actuator including: a sliding tube; and a rotor arranged in said sliding tube; wherein the sliding tube has at one end a receiving cavity for a rotor positioning key, the receiving cavity being configured such that after the rotor positioning key has been positioned in the receiving cavity, and after the rotor positioning key has been twisted in the receiving cavity, the rotor positioning key is releasably locked.

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: A contact-free magnetic coupling for an endoscope. The contact-free magnetic coupling including: an outer coupling part; and an inner coupling part. Wherein the inner coupling part is disposed within the outer coupling part such that a gap remains between the outer and inner coupling parts; the outer coupling part and the inner coupling part each comprise an annular body; the annular body of the outer coupling part is disposed between first side anchor plates, which together form a substantially “U”-shaped cross section that is open toward an interior; and/or the annular body of the inner coupling part is disposed between second side anchor plates, which together form a substantially “U”-shaped cross section that is open toward an exterior. Wherein the annular body of the outer coupling part and/or the inner coupling part comprises an axially magnetized annular magnet.

Abstract: A sideways viewing endoscope including: a proximal handle, an endoscope shaft having outer and inner tubes, and first and second optical component assemblies arranged in a distal region of the endoscope shaft, the optical components assemblies can be rotated with respect to one another about a longitudinal axis of the endoscope shaft and are mounted against each other by an axial bearing that is disposed between the optical component assemblies and pretensioned by a pretensioning device; wherein the first optical component assembly is distally connected to the outer tube and comprises optical windows, prisms and/or lenses having a sideways viewing direction and the second optical component assembly is distally connected to the inner tube and comprises an image sensor having a straight-ahead viewing direction oriented in the direction of the longitudinal axis; and the pretensioning device is disposed in the distal region of the endoscope shaft at the axial bearing.

Abstract: An endoscope including: a shaft tube; a fibre tube disposed within the shaft tube; an image guide having a distal objective, the image guide being disposed within the shaft tube; and an optical fibre bundle disposed in a free cross-section between the fibre tube and the shaft tube. Wherein the fibre tube has an elongate cross-section.

Abstract: The invention relates to an electromagnetic actuator for a surgical or medical instrument, the actuator having a stator (19) and a displaceable element (10), which at least partially comprises a paramagnetic or ferromagnetic material and can be displaced from a first position into a second position by applying an electromagnetic field. The invention is characterized in that the displaceable element (10) is or will be held in the first or in the second position by a permanent magnet.

Abstract: A medical endoscope and insertion portion for a medical endoscope having a fiber tube that encloses an image guide and is surrounded by optical fibers, the distal opening of said fiber tube being sealed by a window, which is heated by an electric resistance heater located close by, wherein the heater is designed as heating foil arranged on the outer surface of the fiber tube.

Abstract: The invention relates to a surgical instrument (1) having a hermetic chamber (19), wherein at least one electrical connection (9-9VIII) is provided from the hermetic chamber (19) to outside the hermetic chamber (19) to an outer area (20). The surgical instrument (1) according to the invention is characterized in that the at least one electrical connection (9-9VIII) is applied to an electrically insulating substrate (21, 100), wherein a first insulating layer (14, 25) is applied at least to the electrical connection (9-9VIII) and a layer (15, 23) suitable for a hermetic connection and hermetically connected to a wall (16, 28, 29) of the surgical instrument (1), is applied to the first insulating layer (14, 25).

Abstract: A medical endoscope and insertion portion for a medical endoscope having a fiber tube that encloses an image guide and is surrounded by optical fibers, the distal opening of said fiber tube being sealed by a window, which is heated by an electric resistance heater located close by, wherein the heater is designed as heating foil arranged on the outer surface of the fiber tube.