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: An instrument configured for performing a surgery includes a distal end portion, a proximal end portion, and a tube connecting the distal end portion and the proximal end portion. A fluid fitting includes an inlet configured for receiving flow of an irrigating fluid into the instrument and at least two exits configured for guiding the flow of the irrigating fluid out of the instrument. A first exit is configured to allow the irrigating fluid to flow towards the distal end portion of the instrument and a second exit is configured to allow the irrigating fluid to flow towards the proximal end portion of the tube. A size of the first exit is larger than a size of the second exit to enable greater flow towards the distal end portion.

Abstract: An endoscope includes an endoscope shaft (3), which has a cylindrical shaft tube (4), and an endoscope head (2), which is arranged at a proximal end of the endoscope shaft (3). A distal end region (11) of the endoscope head (2), has a cylindrical interior (13) with a peripheral groove (15). The shaft tube (4) is inserted into the cylindrical interior (13) and folded into the peripheral groove (15). The groove (15) is not rotationally symmetrical. An endoscope head and a method for producing an endoscope are also provided.

Abstract: A medical instrument includes a hollow shaft (2) with a proximal end (3) connected to a handle (4) and a distal end (5) with a tool (6) arranged with one jaw part (8) pivotable relative to another jaw part (7). A distal end region of the shaft as a tool tip (10) deflects relative to a longitudinal axis (9) via an axially displaceable first actuation element (11) connected to the handle. The pivotable jaw part is adjustable via a second actuation element (13) mounted axially displaceably in the hollow shaft and connected to the handle. The first actuation element and the second actuation element are parallel to each other in the longitudinal axis direction of the shaft and mounted to be guided on each other. One of the two actuation elements is mounted on the inner side. The mutual axial mounting is effected via a pin-and-slot control (19).

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: 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).

Abstract: An endoscope includes an endoscope shaft (3), which has a cylindrical shaft tube (4), and an endoscope head (2), which is arranged at a proximal end of the endoscope shaft (3). A distal end region (11) of the endoscope head (2), has a cylindrical interior (13) with a peripheral groove (15). The shaft tube (4) is inserted into the cylindrical interior (13) and folded into the peripheral groove (15). The groove (15) is not rotationally symmetrical. An endoscope head and a method for producing an endoscope are also provided.

Abstract: The present invention relates to a connecting device and to a monopolar cable for surgical instruments operable in a monopolar and bipolar manner, especially for high-frequency surgery, and a corresponding surgical instrument and surgical system. An electrical terminal of the connecting device is designed to be connectable either to a monopolar cable for monopolar operation or to a bipolar cable for bipolar operation. A first contact and a second contact of the electrical terminal are electrically connected to an accessory coupling of the connecting device and are designed with insulation such that an accessory coupled by the accessory coupling is operable either in a monopolar or bipolar manner via the two contacts. The present invention further relates to a monopolar cable for such a connecting device, to a surgical instrument comprising such a connecting device and to a surgical system comprising such a surgical instrument and such a monopolar cable.

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: A medical instrument includes a hollow shaft (2) with a proximal end (3) connected to a handle (4) and a distal end (5) with a tool (6) arranged with one jaw part (8) pivotable relative to another jaw part (7). A distal end region of the shaft as a tool tip (10) deflects relative to a longitudinal axis (9) via an axially displaceable first actuation element (11) connected to the handle. The pivotable jaw part is adjustable via a second actuation element (13) mounted axially displaceably in the hollow shaft and connected to the handle. The first actuation element and the second actuation element are parallel to each other in the longitudinal axis direction of the shaft and mounted to be guided on each other. One of the two actuation elements is mounted on the inner side. The mutual axial mounting is effected via a pin-and-slot control (19).

Abstract: The present application provides an endoscopic device with a shaft which has at least one portion which can be deflected in at least one plane, and having at least one deflection mechanism which is designed for deflecting the deflectable portion and includes, arranged in series, a first connecting link and at least a second connecting link which cooperates with the first connecting link and at least one control element which is coupled to the connecting links to adjust a deflection of the deflectable portion and is connected to an end portion of the shaft. At least part of the control element is arranged in the region of the end portion of the shaft, embodying a loop.

Abstract: The present application provides an endoscopic device having at least one shaft, which has at least one portion deflectable, having at least one deflection mechanism, which includes, arranged in series, at least one first connection member and at least one second connection member interacting for a deflection with the first connection member, having an end effector which is arranged on an end portion of the shaft and includes at least one tool piece. The endoscopic device further includes an actuation train, which extends at least partially through the shaft and which actuates the end effector and is flexible at least in the region of the deflectable portion of the shaft, and at least one movement transducer, which couples the end effector and the actuation train mechanically to each other and is configured to convert a first movement of the actuation train into a second movement of the tool piece.

Abstract: A component (14) for a medical instrument includes a shaft (15), a transmission device (16), which is movable in the shaft (15), for transmitting a force from a manipulation device (18) coupled to the proximal end of the component (14) to a tool (13) at the distal end of the component (14), an abutment surface (86) on the shaft (15), and an abutment surface (36) on the transmission device (16). The abutment surface (86) of the shaft (15) and the abutment surface (36) of the transmission device (16) are arranged such that a mechanical contact between the abutment surface (36) of the transmission device (16) and the abutment surface (86) of the shaft (15) limits a movement of the transmission device (16) relative to the shaft (15) in the proximal direction.

Abstract: A surgical instrument comprises a shaft, wherein a deflectable articulation section is formed at the shaft, a proximal handling portion at a proximal end of the shaft, a distal effector at a distal end of the shaft, and a deflection mechanism for controlling a bending state of the articulation section. The deflection mechanism comprises a first pull element for a deflection movement and a second pull element for a return movement. The first pull element and the second pull element are jointly pretensioned during the movement of the articulation section. An interface is provided where the instrument is demountable into a distal shaft assembly and a proximal handle piece, wherein the effector is controlled via an actuation mechanism that passes through the interface in a mounted state. The actuation mechanism comprises a push piece having a distal end that is coupled with the effector and a proximal end that is actuable by a pushing movement.