Abstract: A medical endoscope including: an elongated shaft with a distal end region having a non-circular cross-section and a shaft main section arranged proximally from the distal end region, an at least one light guide having a plurality of individual fibres disposed longitudinally through the shaft, wherein at least a portion of the plurality of individual fibres in the distal end region are bonded over a length of at least 50% of the distal end region with an inflexible adhesive.

Abstract: A rigid endoscope including: a shaft; a body disposed at a proximal end of the shaft, a fiber image guide mounted to move longitudinally within the shaft and body; a securing section for securing the fiber image guide, the securing section being positioned within the body; a sliding element mounted to move longitudinally within the body; and a protective sheath encasing the fiber image guide; wherein the fiber image guide is twisted, for image rotation, in a longitudinal portion corresponding to the protective sheath.

Abstract: A surgical instrument including: a main body; an elongated shaft tube connected to the main body, the shaft tube having at least one working channel tube arranged in an interior of the shaft tube, the at least one working channel tube extending in a longitudinal direction of the shaft tube; and a connection body coupled to a proximal end region of the main body; wherein a proximal end region of the at least one working channel tube is accommodated inside the connection body and is sealed with respect to the connection body.

Abstract: An eyepiece device for a surgical instrument with an image guide channel part through which an image guide fibre bundle passes, the eyepiece device including: an optical filter disposed at a proximal end of the image guide fibre bundle; a sliding body having the optical filter element disposed therein; and a connector disposed at a proximal end of the image guide channel part; wherein the sliding body is disposed longitudinally displaceable within the connector.

Abstract: A medical endoscope including: an elongated shaft with a distal end region having a non-circular cross-section and a shaft main section arranged proximally from the distal end region, an at least one light guide having a plurality of individual fibres disposed longitudinally through the shaft, wherein at least a portion of the plurality of individual fibres in the distal end region are bonded over a length of at least 50% of the distal end region with an inflexible adhesive.

Abstract: A medical endoscope including: an elongate shaft; and a main body arranged proximal to the shaft, wherein an optical waveguide extends through the shaft in the longitudinal direction, the optical wave guide being bent in the main body into a connecting piece extending from the main body, the main body comprises at least one handle arranged adjacent to the connecting piece in a longitudinal direction of the main body, and the handle being rotatable into a plurality of rotational positions around a longitudinal axis of the shaft.

Abstract: A surgical instrument, such as an ureteroscope. The surgical instrument including an elongated shaft tube with at least two working channels arranged in an interior of the shaft tube. In at least a distal end area of the shaft tube, the at least two working channels, in cross-section, each have a profile edge.

Abstract: An eyepiece device for a surgical instrument, the eyepiece device including: an eyepiece frame; and at least one optical unit accommodated in the eyepiece frame, wherein the at least one optical unit comprises at least one first optical element and a second optical element connected with the at least one first optical element, wherein the second optical element is formed from a second material with abnormal dispersion and the first and the second optical elements together correct chromatic aberration; wherein the eyepiece frame comprises an expansion chamber for at least the second optical element, the expansion chamber forming an installation space for at least the second optical element in a radial direction.

Abstract: An ocular device for a surgical instrument having an ocular mount for an optical assembly. The ocular device including: an optical flat; and a holder for accommodating the optical flat, wherein the holder is configured to be connected to the ocular mount; wherein the optical flat having a widened side edge provided with a first contact surface for the ocular mount and a second contact surface for the holder, and a surface normal of the optical flat and the first contact surface of the optical flat facing the ocular mount form an angle different than 0° relative to each other.

Abstract: An ocular device for a surgical instrument, the surgical instrument having an optical window frame and an optical assembly arranged in an interior space of the surgical instrument, the ocular device including: an ocular window separated from the optical assembly by a space; a holder configured to be connected to the ocular window frame; and at least one elastic element, wherein in a connected state, the at least one elastic element transmits a clamping force from the holder to bias the ocular window towards the space.

Abstract: An endoscopic optical system including: a fiber image conductor arranged in an elongated shaft tube, the fiber image conductor having a proximal face; an objective arranged distally relative to the fiber image conductor; an observation device arranged proximally relative to the proximal face of the fiber image conductor; a mask; and a transparent cover pane arranged between the proximal face of the fiber image conductor and the observation device; wherein the transparent cover pane is configured as a moire filter.

Abstract: A rigid endoscope including: a shaft; a body disposed at a proximal end of the shaft, a fiber image guide mounted to move longitudinally within the shaft and body; a securing section for securing the fiber image guide, the securing section being positioned within the body; a sliding element mounted to move longitudinally within the body; and a protective sheath encasing the fiber image guide; wherein the fiber image guide is twisted, for image rotation, in a longitudinal portion corresponding to the protective sheath.

Abstract: A surgical instrument including: a main body; an elongated shaft tube connected to the main body, the shaft tube having at least one working channel tube arranged in an interior of the shaft tube, the at least one working channel tube extending in a longitudinal direction of the shaft tube; and a connection body coupled to a proximal end region of the main body; wherein a proximal end region of the at least one working channel tube is accommodated inside the connection body and is sealed with respect to the connection body.

Abstract: A surgical instrument, such as an ureteroscope, including: an elongated shaft tube; and at least two working channels arranged in an interior of the shaft tube; wherein, at least in the distal end area of the shaft tube, the at least two working channels, in cross-section, each comprise a profile edge or a profile nose.

Abstract: An endoscopic optical system including: a fiber image conductor arranged in an elongated shaft tube, the fiber image conductor having a proximal face; an objective arranged distally relative to the fiber image conductor; an observation device arranged proximally relative to the proximal face of the fiber image conductor; a mask; and a transparent cover pane arranged between the proximal face of the fiber image conductor and the observation device; wherein the transparent cover pane is configured as a moire filter.

Abstract: An eyepiece device for a surgical instrument, the eyepiece device including: an eyepiece frame; and at least one optical unit accommodated in the eyepiece frame, wherein the at least one optical unit comprises at least one first optical element and a second optical element connected with the at least one first optical element, wherein the second optical element is formed from a second material with abnormal dispersion and the first and the second optical elements together correct chromatic aberration; wherein the eyepiece frame comprises an expansion chamber for at least the second optical element, the expansion chamber forming an installation space for at least the second optical element in a radial direction.

Abstract: An ocular device for a surgical instrument having an ocular mount for an optical assembly. The ocular device including: an optical flat; and a holder for accommodating the optical flat, wherein the holder is configured to be connected to the ocular mount; wherein the optical flat having a widened side edge provided with a first contact surface for the ocular mount and a second contact surface for the holder, and a surface normal of the optical flat and the first contact surface of the optical flat facing the ocular mount form an angle different than 0° relative to each other.

Abstract: An ocular device for a surgical instrument, the surgical instrument having an optical window frame and an optical assembly arranged in an interior space of the surgical instrument, the ocular device including: an ocular window separated from the optical assembly by a space; a holder configured to be connected to the ocular window frame; and at least one elastic element, wherein in a connected state, the at least one elastic element transmits a clamping force from the holder to bias the ocular window towards the space.

Abstract: A rigid endoscope including: a fiber tube; a window disposed at a the distal end of the fiber tube; an objective lens arranged in the fiber tube; a spacer tube to maintain the objective lens at a predetermined-distance from the window; and an objective lens tube for holding the objective lens, the objective lens tube being disposed in the fiber tube between the window and at least a portion of the spacer tube; wherein the spacer tube is supported on a distal end against the window and on a proximal end against the objective lens.

Abstract: A shaft of an endoscope including a locking coupling which is designed to connect the end piece of the shaft to a counter piece, and which includes a coupling piece which is mounted on the end piece or on the counter piece so that it can be slidingly moved transversely to the axis thereof, the coupling piece being designed so it can be placed, when being moved in a traverse manner, in or out of the locking engagement with the counter piece or end piece, the transverse bearing of the coupling piece is provided with a locking device which can be brought into contact for suppressing the transverse movement.