Abstract: The inventive method of manufacturing a cryoprobe uses an assembly pin (25) for receiving a sleeve (20) that is to form a part of the head (13) of the cryoprobe and comprises three abutment surfaces (27, 29, 30) that are axially offset relative to each other, said abutment surfaces ensuring, following the attachment of the sleeve (20) and the nozzle (24) to the tube end (19), the correct axial positioning of the nozzle (24) and the sleeve (20), in particular, relative to the distal end surface (18) of the tube end (19). Consequently, the position of the nozzle (24) in the expansion chamber (23) that formed after the sleeve (20) was closed and thus the function of the cryoprobe are ensured.

Abstract: An apparatus for supply of coolant, particularly CO2 that is preferably provided in bottles, to cryosurgical instruments. The device may be a mechanical or thermal compression device. A pump may supply the CO2 taken from the bottle in a buffer container with a desired operation pressure. The pressure in the gas bottle can be less than the desired operation pressure. The apparatus includes a tempering device that is configured to bring the coolant to a desired temperature, particularly a temperature that is higher than the temperature in the gas bottle or in another storage container.

Abstract: A two-part NMS-test bench is provided with which instruments, generator voltages, and surgery modes can be evaluated with regard to neuromuscular stimulations. By separating the NMS-test bench in a first part for application of the instrument and in the second part for evaluation of the physiological effect on nerves, a measurement free of artifacts is possible. The spatial and timely separation of the RF-application from the recording of the compound action potentials makes RF-disturbances ineffective. The electrical signals gained in the instrument test chamber can be pre-processed. The recorded electrical signals emitted from the instrument can be evaluated at the nerve model an arbitrary number of times. The variance involved with the recording of compound action potentials during direct use of the instrument can thus be minimized. The separated test of the signals at the nerve model avoids thermal damage of a prepared nerve and falsification of measurement results.

Abstract: An instrument (10) provided for simultaneous coagulation and dissection of tissue has tissue receptacles between the cutting electrode and the sealing electrode for the formation of tissue bulges to secure the tissue in the tool during the sealing process. In order to make it possible to form voluminous tissue bulges and to prevent their atrophy, the cutting electrode is supplied by a current limiting component, preferably in the form of a coupling capacitor. Thereby, in particular, in tissue that can be cut through easily, but which requires a long time for sealing, a high degree of process safety is achieved.

Abstract: A probe for electrosurgical treatment of tissue. An electrode is movably arranged in an extension direction of an electrode channel inside a probe body. The probe body is connected with an operating device at the proximal end. The operating device comprises an electrode operating element to shift the electrode along the electrode channel. The movement coupling between the electrode operating element and the electrode is established via a reduction gear, for example a lever gear.

Abstract: The coagulation arrangement (10) according to the invention comprises an instrument (11) having a tool (17) comprising coagulating electrodes (22, 23, 27, 28), as well as a dissecting electrode (36). The electrodes are powered by a circuit (44) that comprises a coagulating voltage source (54) and a dissecting voltage source (55), or that can be connected to such sources. The device comprises a dissection actuating switch (60) and a coagulation actuating switch (59). The former is connected to a power switch (58) that—in dissecting mode—connects the current path from the dissecting voltage source (55) to the dissecting electrode (36), before the dissecting voltage source (55) or the HF output voltage source (47) and the coagulating voltage source (54) are actuated. Thus, the user is presented with a reliable means in a simple manner in order to be able to more flexibly perform more complex operations.

Abstract: A cryoprobe having a head to which cryofluid is supplied via a capillary tube. A hose serves for removal of the cryofluid, wherein the capillary tube extends through the lumen thereof. The capillary tube comprises a flexible section that is bridged by a pull element. In this manner a cryoprobe that can be handled well is obtained that can be easily and very largely bent and still transmits tensile forces for sample extraction.

Abstract: A surgical device having an apparatus with a generator and an instrument supplied by a generator. A sensor is part of the device that is attached to the patient, for example to an extremity thereof, during surgery to detect the movement of the patient. The sensor is connected with a control device that modifies the operation of generator and particularly switches the generator off, if the sensor detects a movement of the patient exceeding a threshold. Injuries of patient that could occur by involuntary twitches during surgery process are thus avoided.

Abstract: The fluid connecting system comprises a connecting piece (16) that consists of a single injection-molded part of plastic material, said part accommodating a coaxial first fluid conveying arrangement (15), as well as an also coaxial second fluid conveying arrangement (17) and providing several adhesive reservoirs that allow a pressure-resistant gluing of the two fluid conveying arrangements (15, 17) to each other by a reliable safe process.

Abstract: An instrument for large-area ablation of the mucosa including at least one first gas supply line and at least one second gas supply line whose distal ends are arranged to form an acute angle (?), so that the ends diverge distally. A free space between the distal ends of the gas supply lines allows the user to view the tissue region behind the distal end of the instrument. Due to the acute angle (?), electrodes arranged at least partially in the ends of the gas supply lines generate a wide plasma beam with which the mucosa ablation can be performed. The instrument can be guided precisely due to the view through the free space. A connecting element according to the invention is provided for attaching the ends of the gas supply lines.

Abstract: A tissue fusion instrument having electrodes that are only connected in a punctiform manner to their electrode carrier such that they are electrically conducting and thus, heat-conducting.

Abstract: An instrument with a first conduit for emitting a first fluid from a first opening of the first conduit in an axial direction into a reacceleration zone and with a second conduit for channeling of a second fluid in the reacceleration zone in axial direction is provided such that active ingredient components, e.g. cells, of the second fluid are reaccelerated in axial direction as a result of the flow in the reacceleration zone by means of the first fluid that enters the reacceleration zone. A coaxial configuration of the first and the second conduit is preferred, because in doing so, around the first opening a shell jet of second fluid can be created that flows downstream in axial direction around the central working jet. In addition, a head for an inventive instrument and an application system with an inventive instrument is provided.

Abstract: A fluid control arrangement for a medical device. The fluid control arrangement has a fluid control circuit with at least one fluid control component, through which a fluid flows. For controlling the at least one fluid control component, a control circuitry with at least one electric and/or electronic component is provided. A first carrier part has a first coupling surface and a second carrier part has a second coupling surface. In the first coupling surface at least one first fluid channel cavity and/or in the second coupling surface at least one second fluid channel cavity is provided. By connecting the carrier parts with each other with facing coupling surfaces, at least one main fluid channel is formed in the area of the separating location. At the first carrier part a first mounting surface for the at least one fluid control component can be provided.

Abstract: A branch is produced by means of an additive 3D production process for producing a metal part, which comprises at least two parts, namely a support section and a functional section. The metal part is a single-pieced part, in which the support section and the functional section are seamlessly interconnected by means of corresponding connecting webs. After the material is applied, the connecting webs are removed.

Abstract: The invention relates to an electrosurgical instrument, especially for argon plasma coagulation, with a handle (10), an outer shaft (12) that surrounds an electrode and/or an inner shaft (11, 111) and is held in the handle (10), and an actuation mechanism (13) on the handle (10) to move the outer shaft (12) in the axial direction relative to the electrode/to the inner shaft (11, 111). The invention is characterized in that the inner shaft and/or the electrode (11, 111) are mechanically connected with one another in a distal end area (65) of the outer shaft (12) in such a way that the inner shaft and/or the electrode (11, 111) can be bent by moving the outer shaft (12) relative to the inner shaft and/or to the electrode (11, 111).

Abstract: A surgical instrument having a long shaft comprises, in the shaft, a sealing element produced by primary shaping at the installation location. The sealing element is produced such that any actuating mechanisms are installed and held in place in the shaft and then a curable plastic material is injected into the shaft such that the material encloses the actuating element along a length that is greater than the inside diameter and smaller than its length.

Abstract: An adapter element for receiving an HF surgical handpiece is proposed. The adapter element is characterized in that it is possible by receiving the handpiece in the adapter element to form a smoke duct in said adapter element for discharging smoke from a treatment area, at least one stick-, point-, ring-, sphere- or loop-shaped electrode or combinations of the same being attached on the distal end of the adapter element.

Abstract: In the case of an electrosurgical instrument, provision is made for a tool (16), for the operation of which at least one, preferably two pull/thrust elements (39, 40) and a sliding element (56) are required. The sliding element (56) is held between a pull/thrust element (39) and a thrust bearing, wherein the thrust bearing can be formed by means of a further pull/thrust element (40). This arrangement utilizes the fact that the sliding element must only be activated, when the pull/thrust element is tensioned tightly. This concept of guiding the sliding element at the pull/thrust element provides for the simple design of instruments comprising long shafts, wherein separate measures for laterally reinforcing the sliding elements do not need to be taken.

Abstract: The ablation device (11) according to the invention is distinguished by a head (20) having a noncircular cross-section and by electrodes (32, 33) being positioned at an acute angle relative to each other. Due to the angular arrangement of the electrodes and the appropriate configuration of the channels (28, 29), there results an approximately fan-shaped plasma beam with which—in particular with the alternating activation of the two electrodes—a wide strip-shaped ablation region can be achieved on hollow organs of living beings. Handling is reliable and simplified, and, compared to existing measures, the treatment time is reduced.