Abstract: This invention pertains to a force transmission element with combined mechanical support and electrical isolation, as well as a surgical instrument comprising the force transmission element and a method for manufacturing the force transmission element. A rod of the force transmission element has at least one recess and insulation extends at least along the recess. A sleeve of the force transmission element has an embossment that extends at least in sections into the recess and which is designed to mesh with a securing element of the surgical instrument.

Abstract: An electrically insulated shaft (30) of a microinvasive instrument or for a microinvasive instrument includes an electrically conductive shaft component (40) with an outer surface (44) and an insulation tube (50) formed of an electrically insulating material, which encloses the shaft component (40) and covers the outer surface (44) of the shaft component (40). The insulation tube (50) is melted or welded onto the outer surface (44) of the shaft component (40).

Abstract: The present invention provides an adapter device and a disassemblable medical shaft instrument equipped therewith, a method for cleaning the disassemblable medical shaft instrument and a method for assembling the adapter device to provide the disassemblable medical shaft instrument. The adapter device (10) is designed for arrangement in a disassemblable medical shaft instrument (1) comprising a shaft (2), a transmission rod (40) that can move in the shaft (2) and a handling apparatus (3) comprising a housing part (30) and an actuating part (31) which is movable relative to the housing part (30). The adapter device (10) has a transmission adapter (5) designed for releasably coupling to the actuating part (31) and to the transmission rod (40), and an adapter sleeve (6) designed for releasably coupling to the shaft (2) and the housing part (30).

Abstract: A force transmission element, in particular a pull rod for an endoscopic instrument, has: a potential-free rod configured for force transmission, which has at least one local clearance; and an electrode which extends over an outer surface of the clearance and in the axial direction along the clearance, wherein the electrode is in contact with an electrical conductor which extends within the rod. One end, a proximal end, of the rod has an electrically insulated positive-connection element which is configured to engage with a bearing element of a surgical instrument. Furthermore, the pull rod for an endoscopic instrument relates to a surgical instrument comprising such a force transmission element and to a method for producing such a force transmission element.

Abstract: A coupling device for a surgical instrument, a handle device for it, and corresponding assembly and disassembly methods. The device has a force transmission element defining a longitudinal axis with an offset connection element at its proximal end, and a handle part movable about a pivot axis perpendicular to the longitudinal axis. Having a coupling element with a recess for receiving the connection element and a slider element which cooperates with the coupling element and is configured to cooperate with the movable handle part and to move in the direction of the longitudinal axis. Receiving in a guide receptacle of the slider element such that it can move along a coupling axis, and the recess in the coupling element corresponds to the coupling axis. Having a notch connected to the recess. The coupling element can move along the coupling axis between at least one release position and one engaging position.

Abstract: A medical instrument (1) includes a hollow rod (2), at the distal end (3) of which a tool carrier (4) can be secured by a first fastening mechanism (5), and the proximal end (6) of which can be secured to an operating unit (8) by a second fastening mechanism (7). In order to create a medical instrument (1) of which the fastening mechanism (5, 7) for the detachable rod connections is easy to handle during manufacture and assembly while ensuring a secure hold, it is proposed that at least the first fastening mechanism (5) for connecting the tool carrier (4) to the distal end (3) of the rod (2) is configured as a mechanical latching connection having at least one resilient element.

Abstract: A surgical instrument has a hollow shaft defining a longitudinal axis, a handle arranged at the proximal end of the shaft, and a force-transmission element mounted in the shaft and connected to a tool on the distal side and to the handle on the proximal side. The surgical instrument has a coupling device for releasably connecting the shaft and handle, the coupling device being an engaging device with an engaging element that moves between an engaging position wherein it engages with at least one recess at the proximal end of the shaft and a release position wherein it does not engage with the recess. The engaging element has at least one wedge-like engaging section with an engaging plane, the length corresponding to a length of the recess along the longitudinal axis so that the engaging section is received in the recess up to the engaging plane in the engaging position.

Abstract: A connection apparatus for a surgical instrument, having an instrument base, a receiving device arranged at a shaft opening of the instrument base. Further having a first shape-coding dimension and a second shape-coding dimension, and a shaft connection element which is configured to connect an accessory shaft to the instrument base. The shaft connection element is configured as a hollow body. The shaft connection element has a first shape-coding dimension and a second shape-coding dimension. The first and second shape-coding dimensions correspond to the first and second shape-coding dimensions of the receiving device when coupled to the instrument base in an assembled state, and the shaft connection element cannot be assembled with the instrument base if the first and/or second shape-coding dimensions of the shaft connection element and the receiving device do not correspond. The connection apparatus also relates to a surgical instrument with such a connection apparatus.

Abstract: A connection assembly for a surgical instrument or in a surgical instrument, includes an instrument base that is configured to control and/or operate a high-frequency tool of the surgical instrument, a high-frequency connection that has a connection element with a blocking section and an orientation section for the predetermined orientation of a connection axis of the high-frequency connection within the instrument base, and a rotary wheel assembly having a coupling section for coupling to the blocking section of the high-frequency connection, such that a rotary wheel axis of the rotary wheel assembly can be orientated at a predetermined angle relative to the connection axis via the coupling process. A method produces a connection assembly of this type and a surgical instrument includes such a connection assembly of this type.

Abstract: An endoscopic instrument is disclosed that includes an elongate shaft and an instrument insert releasably connected to a distal end portion of the shaft, the distal end portion of the shaft being in the form of a sleeve and a proximal end region of a base of the instrument insert being in the form of a coupling shaft, or the distal end portion of the shaft being in the form of a coupling shaft and a proximal end region of a base of the instrument insert being in the form of a sleeve, with the coupling shaft being releasably held in the sleeve and the sleeve and/or the coupling shaft at least in portions having a cross-sectional profile which is reversibly changeable for detaching the coupling shaft from the sleeve. The invention also relates to a shaft for an endoscopic instrument, and to an instrument insert for an endoscopic instrument.

Abstract: A medical instrument (1) includes a hollow rod (2), at the distal end (3) of which a tool carrier (4) can be secured by a first fastening mechanism (5), and the proximal end (6) of which can be secured to an operating unit (8) by a second fastening mechanism (7). In order to create a medical instrument (1) of which the fastening mechanism (5, 7) for the detachable rod connections is easy to handle during manufacture and assembly while ensuring a secure hold, it is proposed that at least the first fastening mechanism (5) for connecting the tool carrier (4) to the distal end (3) of the rod (2) is configured as a mechanical latching connection having at least one resilient element.

Abstract: This invention pertains to a force transmission element with combined mechanical support and electrical isolation, as well as a surgical instrument comprising the force transmission element and a method for manufacturing the force transmission element. A rod of the force transmission element has at least one recess and insulation extends at least along the recess. A sleeve of the force transmission element has an embossment that extends at least in sections into the recess and which is designed to mesh with a securing element of the surgical instrument.

Abstract: Handling device for the formation of a disassemblable medical instrument comprises a first component, a second component, which can be moved relative to the first component, a coupling device on the second component, wherein the coupling device is designed and arranged in order to be coupled to a corresponding coupling device at the proximal end of a force transmission device within a working range of positions of the second component and in order not to be coupled to a corresponding coupling device at the proximal end of a force transmission device in a release position of the second component, and a guiding device on the first component for guiding a corresponding coupling device at the proximal end of a force transmission device within a transitional range between one end of the working range and the release position.

Abstract: This application is directed to a medical instrument with a hollow shaft, an actuating unit at the proximal end and an instrument tip with an instrument at the distal end, the instrument actuated via an actuating element, the element being in connection with the actuating unit and the instrument tip being pivotable relative to the shaft via a joint mechanism; the joint mechanism having pivoting members with proximal-side drive via steering wires such that movement of the proximal-side drive causes movement of the distal-side pivoting members and pivoting of the instrument tip; and a trigger mechanism with which the steering wires can be brought into a relaxed state that releases the articulation of the instrument tip. In order for the medical instrument to be cleaned and ensure that the medical instrument is safely removed even if the proximal-side drive fails, the trigger mechanism is a purely mechanical trigger mechanism.

Abstract: The invention relates to a medical instrument having an elongated shaft, a movable tool at a distal end of the shaft, a handle with a movable grip part at a proximal end of the shaft, and a force transmission element which can be moved in the longitudinal direction of the instrument and is operatively connected to the movable grip part and to the tool such that an actuation of the movable grip part is converted into a movement of the tool. The instrument has a spring assembly that is arranged on the handle and has at least one leg spring, which has at least one winding and two legs, and a pin, wherein the at least one winding extends about the pin. When the movable grip part is actuated, a force is applied to at least one of the legs of the leg spring, said force reducing the friction between the winding and the pin such that the leg spring can be rotated about the pin and the force transmission element and the tool can be moved.

Abstract: This application is directed to a medical instrument with a hollow shaft, an actuating unit at the proximal end and an instrument tip with an instrument at the distal end, the instrument actuated via an actuating element, the element being in connection with the actuating unit and the instrument tip being pivotable relative to the shaft via a joint mechanism; the joint mechanism having pivoting members with proximal-side drive via steering wires such that movement of the proximal-side drive causes movement of the distal-side pivoting members and pivoting of the instrument tip; and a trigger mechanism with which the steering wires can be brought into a relaxed state that releases the articulation of the instrument tip. In order for the medical instrument to be cleaned and ensure that the medical instrument is safely removed even if the proximal-side drive fails, the trigger mechanism is a purely mechanical trigger mechanism.

Abstract: The invention relates to a medical instrument having an elongated shaft, a movable tool at a distal end of the shaft, a handle with a movable grip part at a proximal end of the shaft, and a force transmission element which can be moved in the longitudinal direction of the instrument and is operatively connected to the movable grip part and to the tool such that an actuation of the movable grip part is converted into a movement of the tool. The instrument has a spring assembly that is arranged on the handle and has at least one leg spring, which has at least one winding and two legs, and a pin, wherein the at least one winding extends about the pin. When the movable grip part is actuated, a force is applied to at least one of the legs of the leg spring, said force reducing the friction between the winding and the pin such that the leg spring can be rotated about the pin and the force transmission element and the tool can be moved.

Abstract: This application is directed to a medical instrument with a hollow shaft, an actuating unit at the proximal end and an instrument tip with an instrument at the distal end, the instrument actuated via an actuating element, the element being in connection with the actuating unit and the instrument tip being pivotable relative to the shaft via a joint mechanism; the joint mechanism having pivoting members with proximal-side drive via steering wires such that movement of the proximal-side drive causes movement of the distal-side pivoting members and pivoting of the instrument tip; and a trigger mechanism with which the steering wires can be brought into a relaxed state that releases the articulation of the instrument tip. In order for the medical instrument to be cleaned and ensure that the medical instrument is safely removed even if the proximal-side drive fails, the trigger mechanism is a purely mechanical trigger mechanism.

Abstract: An endoscopic instrument is disclosed that includes an elongate shaft and an instrument insert releasably connected to a distal end portion of the shaft, the distal end portion of the shaft being in the form of a sleeve and a proximal end region of a base of the instrument insert being in the form of a coupling shaft, or the distal end portion of the shaft being in the form of a coupling shaft and a proximal end region of a base of the instrument insert being in the form of a sleeve, with the coupling shaft being releasably held in the sleeve and the sleeve and/or the coupling shaft at least in portions having a cross-sectional profile which is reversibly changeable for detaching the coupling shaft from the sleeve. The invention also relates to a shaft for an endoscopic instrument, and to an instrument insert for an endoscopic instrument.

Abstract: A manipulation device (14) for a microinvasive medical instrument (10) comprises a first grip member (22) and a second grip member (40), that are movable relative to each other, an irrigation port (90) for receiving an irrigation liquid for cleaning the manipulation device (14) between two uses, and an irrigation channel (92, 94, 96, 98) that connects the irrigation port (90) to one or more outlets (93, 95, 33, 65). The irrigation channel (92, 94, 96, 98) is arranged in the first grip member (22).