Abstract: A medical device has a first hinge part (17) including two hinge arms (15, 16), which are arranged at a distance apart, and a hinge pin (32; 52), which is extended between the hinge arms along a longitudinal axis (38; 55). A second hinge part (18) is in certain areas accommodated between the two hinge arms and is passed through by a hinge cavity (31; 51). The hinge pin is accommodated in a pivotably movably in the hinge cavity. The hinge pin and the hinge cavity have a central contact region (33; 56) with contact between hinge pin and hinge cavity. Clearance regions (36, 37; 57, 58) border the contact region on both sides and are extended up to the hinge arms, without touching contact between hinge pin and hinge cavity, in order to ensure an exclusively central force transmission between the hinge pin and the hinge cavity.

Abstract: A joint locking mechanism (1) for holding arms of medical surgical devices with a gear (3) arranged on a pivot axis (2) of a joint and a spring-loaded roller (4, 5) which is in direct operative connection with the gear (3). The joint locking mechanism (1) holds arms of medical surgical devices, which ensures reduced wear on the roller (4, 5) and/or the gear (3) while maintaining the same positioning capability of the joint. The two spring-loaded rollers (4, 5) are in direct operative connection with at least one gear (3), such that in each latched position of the joint, at least one roller (4 or 5) always engages in a latching manner in a tooth gap (12) between two adjacent teeth (13) of at least one gear (3).

Abstract: A sealing device for at least one surgical instrument, with a sealing element which is designed to seal an interface between a working element and at least one instrument, with a locking element which can be connected to the working element or is formed on the latter. The locking element is designed to fix the sealing element and has at least one latching portion. The sealing element is designed to engage in the latching portion and to be held automatically on the locking element in a position sealing the interface. A method is provided for assembling the sealing device.

Abstract: An exemplary embodiment relates to a bearing assembly (40) for a swash plate (14) in a steering gear component (33), wherein the swash plate (14) is arranged such that it can rotate about an axis of rotation (10) in a radial bearing which is located in a receiving opening (330) of the steering gear component (33). The radial bearing is a sliding bearing (35) and the bearing assembly (40) has at least one axial securing device (36) which is arranged axially adjacent to a first side of the swash plate (14) and engages with the steering gear component (33). Furthermore, a surgical instrument (1) is disclosed that has this bearing assembly (40) of a swash plate (14) in a steering gear component (33).

Abstract: An optical instrument (1) for minimally invasive surgery includes an instrument housing (2) for receiving optical elements, wherein the instrument housing (2) is sealed in fluid tight fashion by way of at least one end window (7) on the distal side and/or proximal side. The end window (7) is arranged in a window frame (8) that surrounds the end window (7) around the entire circumference thereof. The end windows (7) is able to be attached with little stress in the associated window frame (8) based on at least two portions (12) that project radially to the inside from the window frame (8). The at least two portions (12) are formed on the inner circumferential surface of each window frame (8) facing the respective end window (7).

Abstract: A medical device has a first hinge part (17) including two hinge arms (15, 16), which are arranged at a distance apart, and a hinge pin (32; 52), which is extended between the hinge arms along a longitudinal axis (38; 55). A second hinge part (18) is in certain areas accommodated between the two hinge arms and is passed through by a hinge cavity (31; 51). The hinge pin is accommodated in a pivotably movably in the hinge cavity. The hinge pin and the hinge cavity have a central contact region (33; 56) with contact between hinge pin and hinge cavity. Clearance regions (36, 37; 57, 58) border the contact region on both sides and are extended up to the hinge arms, without touching contact between hinge pin and hinge cavity, in order to ensure an exclusively central force transmission between the hinge pin and the hinge cavity.

Abstract: An optical instrument (1) for minimally invasive surgery includes an instrument housing (2) for receiving optical elements, wherein the instrument housing (2) is sealed in fluid tight fashion by way of at least one end window (7) on the distal side and/or proximal side. The end window (7) is arranged in a window frame (8) that surrounds the end window (7) around the entire circumference thereof. The end windows (7) is able to be attached with little stress in the associated window frame (8) based on at least two portions (12) that project radially to the inside from the window frame (8). The at least two portions (12) are formed on the inner circumferential surface of each window frame (8) facing the respective end window (7).

Abstract: A medical instrument (10) comprises an effecting device (40), which is movable in a first direction (48) from a first effecting position into a second effecting position, a pushbutton (60), which is movable manually in a second direction (68) from a first button position into a second button position, and a lever (70), which is pivotable about a pivot axis (78). The lever (70) mechanically couples the pushbutton (60) and the effecting device (40) in such a way that a movement of the pushbutton (60) in the second direction (68) is accompanied by a movement of the effecting device (40) in the first direction (48), which is opposite to the second direction (68). The lever (70) does not have an area that is rotationally symmetrical to the pivot axis (78) in the region of the pivot axis (78).

Abstract: A coupling mechanism for mechanically connecting a first structural part and a second structural part of a medical instrument includes a first component and a second component, which are designed to be connected to each other by a bayonet connection that permits a rotation of the second component relative to the first component about a rotation axis, and a detent mechanism for alternately locking the second component in several alternative and mutually different predetermined angle positions relative to the first component.

Abstract: A drying agent arrangement for optical instruments, in particular for endoscopic instruments, having a hygroscopic substance in the instrument housing, such that the hygroscopic substance, configured as individual molded bodies, is positioned in an intake receptacle that can be replaceably inserted in the instrument housing. To provide a drying agent arrangement that, along with simple, versatile application, allows the intake of a great quantity of drying agent, the intake receptacle may be configured as a double-walled sleeve, such that the two walls, forming an intake space for the molded bodies of the hygroscopic substance, are radially distanced from one another and positioned in such a way that the walls, closing the intake space at one axial end of the sleeve, are connected with one another at the end and on the other axial end of the sleeve, releasing the intake space, are radially distanced from one another at the end.

Abstract: A medical instrument (10) comprises an effecting device (40), which is movable in a first direction (48) from a first effecting position into a second effecting position, a pushbutton (60), which is movable manually in a second direction (68) from a first button position into a second button position, and a lever (70), which is pivotable about a pivot axis (78). The lever (70) mechanically couples the pushbutton (60) and the effecting device (40) in such a way that a movement of the pushbutton (60) in the second direction (68) is accompanied by a movement of the effecting device (40) in the first direction(48), which is opposite to the second direction (68). The lever (70) does not have an area that is rotationally symmetrical to the pivot axis (78) in the region of the pivot axis (78).

Abstract: A coupling mechanism for mechanically connecting a first structural part and a second structural part of a medical instrument includes a first component and a second component, which are designed to be connected to each other by a bayonet connection that permits a rotation of the second component relative to the first component about a rotation axis, and a detent mechanism for alternately locking the second component in several alternative and mutually different predetermined angle positions relative to the first component.

Abstract: A drying agent arrangement for optical instruments, in particular for endoscopic instruments, having a hygroscopic substance in the instrument housing, such that the hygroscopic substance, configured as individual moulded bodies, is positioned in an intake receptacle that can be replaceably inserted in the instrument housing. To provide a drying agent arrangement that, along with simple, versatile application, allows the intake of a great quantity of drying agent, the intake receptacle may be configured as a double-walled sleeve, such that the two walls, forming an intake space for the moulded bodies of the hygroscopic substance, are radially distanced from one another and positioned in such a way that the walls, closing the intake space at one axial end of the sleeve, are connected with one another at the end and on the other axial end of the sleeve, releasing the intake space, are radially distanced from one another at the end.