Abstract: An ablation probe according to the invention comprises at least one electrode, which is held on a hose. The ablation probe is provided with a closure piece from which a wire extends over the entire length and through the hose. A fluid supply line is attached to the wire and has lateral openings for cooling the electrode, the wire being closed at the terminal end. An axial alignment of the openings relative to the electrodes can be achieved due to the fixation of the fluid supply line to the wire, and a misplacement can be avoided.

Abstract: A probe having a cutting electrode at its distal end, which is formed on an end piece of probe. From the end piece a wire extends over the entire length of probe therethrough. The wire can serve for current supply to the end piece. The cutting electrode can include a junction site from which electrode surfaces extend away in at least three directions.

Abstract: Methods and systems for supporting evaluation of video-assisted medical interventional procedure are disclosed and include receiving medical video image data (S1) representing video images of an examined or treated anatomy recorded by a video camera at a specific frame rate during a medical intervention; receiving further data (S2) comprising at least one of treatment or examination, device, diagnostic and measurement data associated with the medical intervention, the further data including measured dynamic data that varies during a frame period; identifying target areas in the video images for embedding the further data (S3); and modifying the video image data (S4) by embedding the further data into the video image data synchronously in time by replacing video image data in the identified target area or areas of a frame with the further data associated with the respective frame.

Abstract: A medical instrument with an aerosol outlet, which is fluidically connected—via an aerosol line—to a generation device. The generation device is adapted to generate aerosol for dispensing by means of the medical instrument. In addition, a generation device is stated, which, in embodiments of the generation device, for example can be used in a device with the instrument according to the invention. The generation device comprises a mixing unit for mixing a liquid and a gas together, which mixing unit is connected to a liquid container for supplying the mixing unit with a liquid, in which case the generation device is adapted to utilize the gas pressure of a gas under pressure subjecting the liquid to a pressure in order to press the liquid out of the liquid container to the mixing unit.

Abstract: A neutral electrode (12) is formed on the patient (11) in that an electrically conductible mass that can solidify is applied on the skin of the patient (11). An electrically conductible inlay (17) can be arranged on or embedded in the forming electrode body (16) prior, during or after the application of the mass, the inlay (17) is or can be connected with the neutral electrode connection cable (13). The inlay (17) serves to electrically contact the electrode body (16) in a large area that in turn establishes a reliable electrical contact to the patient (11).

Abstract: A device and a method for coagulation and/or dissection of biological tissue is disclosed. The device comprises an apparatus and an instrument electrically connected thereto. The instrument includes an operation circuit with a manually operated switch. An evaluation circuit of the apparatus provides an evaluation signal for the instrument. The apparatus can create a supply voltage or a supply current for the instrument. In the initial condition the evaluation signal comprises only one polarity. The evaluation signal is provided to a control circuit of the instrument in which a characteristic of the evaluation signal is adjusted depending on the operating condition of the switch. The evaluation circuit detects this characteristic and initiates the output of the supply voltage and changes the polarity of the evaluation signal according to the requested cutting mode. In the cutting mode the evaluation signal comprises at least temporarily also a second polarity.

Abstract: The device comprises an endoscope shaft through which extends a working channel ending at an outlet side of the shaft. A guiding element extends through the working channel, said guiding element being preferably guided in longitudinal direction in and along the working channel. The device is set up in such a manner that the distal end section of an instrument extending in longitudinal direction next to the shaft can be moved alongside the shaft beyond the outlet side in order to move the working section of the instrument away from the outlet side so as to lengthen the distal end section of the device. The instrument is coupled to the guiding element in order to guide the working section of the instrument in a transverse direction away from the outlet side in a region opposite the outlet side in order to work in the region with the instrument.

Abstract: A knife cartridge for use in a surgical instrument. The knife cartridge includes a blade that can be operated by a second operating element. The blade is held in a blade housing that can be transferred from a first locking position (passive position) into a second locking position (active position) by a first operating element. In the passive position the blade housing is completely located inside the cartridge housing and the blade is locked therein. In the active position the blade housing projects out of the cartridge housing. Only in the active position a locking between the blade housing and blade can be released, whereby also only then a driving connection is established between the second operating element and the blade.

Abstract: An electrosurgical generator having an oscillating circuit that is excited by an excitation circuit with a frequency preferably close to the resonance frequency of the oscillating circuit. A regeneration circuit, which may be a voltage multiplier circuit, is used to stop the oscillation as suddenly as possible without losing the energy stored in the oscillating circuit.

Abstract: The inventive device (10) can be used for tissue coagulation and/or tissue ablation. It comprises at least one electrode (16) that serves for generating a spark or plasma jet and is connectable to an electric source (20) for this purpose. The probe (11) is assigned to a measuring device (24) that emits and/or receives light in the proximity of the electrode (16) and determines the distance of the probe (11) from the tissue (36) and/or the tissue temperature and/or the composition of the influenced tissue (36). Preferably the measuring device (24) is operated synchronized with pulses or pauses of the pulse-pause-modulated radio frequency voltage (UHF) of the electrode (16) in order to simultaneously carry out the desired measurements during the operation of the instrument (11) and to feedback control the operation of the instrument (11) based on the gained measurement results.

Abstract: An apparatus comprising a socket insert that is arranged in a receptacle of the apparatus. The socket insert is connected to an operating medium connector. In the receptacle a data interface is covered by the socket insert and inaccessible from outside. To obtain access to the apparatus software or data, the socket insert can be replaced by a service insert that covers the operating medium output but contacts the data plug. The service insert allows communication with the apparatus control to input or output data and/or programs. The arrangement of the service interface covered by socket inserts provides an effective means for access control to the service interface. It impedes or avoids non-authorized access to the interface and damages for persons and material that otherwise could occur due to the missing disruptive discharge proof potential separation between the service interface and particularly the power section of the apparatus control.

Abstract: A branch of an instrument comprising a metal part, which is embodied in one piece seamlessly, which comprises the electrode support as well as the electrode plate and connection webs. Preferably, this metal part is produced in an additive production method, for example selective laser melting (SLM). The branches are suitable for instruments for open surgery as well as for laparoscopic and flexible endoscopic instruments.

Abstract: Instruments having plugs with data carriers containing codes identifiable as being correlated. The codes can be individual identifiers that are individually provided to the plugs. If plugs identical in construction of instruments of identical types are connected with apparatus or an apparatus group, e.g., a first plug of a used instrument and a second and third plug of a new instrument that replace the used instrument, the three inserted plugs are determined as not being part of the same instrument and an operation of the apparatus and thus the instruments is blocked.

Abstract: An electrosurgical instrument (10) with two branches (11, 12) that are pivotably supported at each other by means of a pivot joint (13) is disclosed. The pivot joint (13) has a support pin (34) and a support cavity (37). The support pin (34) is particularly torque-proof connected with one of the branches (11) or (12) and rotatably supported in the support cavity (37) of the respective other branch (12) or (11). Between the branches (11, 12) a seal (45) is provided that sealingly abuts at the two branches (11, 12) and that surrounds the support pin (34) completely in the circumferential direction. Preferably, the support pin (34) is sealingly connected with the respective branch (11, 12) at its axial ends. In doing so, entering of contaminants in the area between the support pin (34) and the support cavity (37) from all sides or access possibilities is inhibited.

Abstract: The plasma sensor monitors parameters characterizing the condition of the plasma during the treatment phase and/or the change thereof in order to recognize a prefiguring or already occurred interruption of the plasma in this manner and to avoid this interruption and, in the ideal case, avoid this by already changing the voltage form previously. The mentioned mechanisms can be used by the control device (22) also during a pulse packet. The length of each pulse packet is adapted at each change of the voltage form according to their characteristics in order to guarantee a constant average power.

Abstract: An apparatus (14) for supplying a medical instrument (15) for the treatment of biological tissue (11) due to the action of a plasma (28) is disposed, in accordance with the invention, in a special manner for the ignition and the stable development of a plasma (28) on the electrode (27) of the instrument (15). To accomplish this, the apparatus (14) comprises a control device (23) that, during an ignition test, limits—preferably in an instrument-specific manner—the current deliverable to the instrument (15) and/or limits the electrical power to be output to the instrument (15), and/or, in doing so, works with a reduced operating voltage. With this measure, a rapid, stable plasma development with minimal spark play is achieved with a large variety of connectable instruments (15a-15e).

Abstract: An electrosurgical instrument with first and second branches that are pivotably supported by a support pin is disclosed. The first branch has a first tissue contact surface and the second branch has a second tissue contact surface. The two tissue contact surfaces are electrically connected with an electric connection device at the first branch. The electric connection is at least partly established via a respective conductor. The second conductor is integrally formed by one single body. The second conductor has a contact section with at least one contact part in contact with an electrically conductive circumferential surface of the support pin, such that an electric rotation connection is established between the contact section and the support pin. In this manner the second conductor arranged in the first branch can establish an electric connection with the second branch via the support pin and further with the second tissue contact surface.

Abstract: Instruments having a hood that defines and surrounds a flow chamber. The flow chamber can serve for suction of emissions that are produced due to influence of an electrode supplied with high frequency voltage on biological tissue. For elimination of tissue deposition and other clogging from the flow chamber the electrode is surrounded by a movable hood that can be transitioned for cleaning purposes out of its operating position into a cleaning position.

Abstract: An apparatus and method for sending test signals to an instrument, and checking the resultant and subsequently arriving echo signals in order to detect specific properties and changes of properties on the line, the instrument, the tissue or also on a fluid body, e.g., plasma body, present on an electrode of the instrument, and to control the operation of the supply arrangement accordingly.