Abstract: An instrument head including an exit opening (23), a first feed line (11) for feeding a first fluid, a second feed line (12) for feeding a second fluid, and a reservoir (24) for storing the second fluid fed via the second feed line (12) is disclosed. The reservoir (24) is in fluid communication with the first feed line (11) and/or is adapted to be brought in fluid communication with the first feed line (11) via at least a valve (25) arranged in the instrument head, to deliver the second fluid stored in the reservoir (24) via the exit opening (23).

Abstract: An instrument (10) that comprises a cartridge seat (24) for a knife cartridge (25). The knife cartridge (25) holds a knife (30), preferably in protected safe position in which the blade (32) of the knife (30) is reliably retained inside the housing (26) of the knife cartridge (25) during non-use, particularly if the knife cartridge (25) is not inserted in the sealing instrument (10). This concept leads to increased handling safety for the medical staff.

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: A method for the selective elevation and separation of tissues comprised of multiple layers and a surgical instrument for performing the method. The method may be performed without the requirement of a solid mechanical device insertion or transection through the mucosal layer. In particular, the method and surgical instrument may be used for the selected separation and/or resection of selected portions of benign or malignant tissues (e.g. defining tissue planes, polyp elevation and removal, submucosal tissue tunnelling, endoscopic mucosa resection, etc).

Abstract: A preparation instrument comprising an HF-instrument with an electrode that is partially insulated by means of an insulating body, which is combined with a fluid applicator having a channel arranged in the insulating body for the application of a fluid to or into tissue. In some embodiments of the preparation instrument, the electrode is a spatula electrode which is inserted in the insulating body that does not cover sections of the surface of the electrode so that these sections may be in contact with the tissue. The insulating body preferably forms the channel wall that delimits the channel. The insulating body and the electrode may be flexible in order to adapt the form of the insulating body and the electrode, together, to the surgical task.

Abstract: A surgical working instrument (3) is disclosed that is inserted in a working channel (7) of an endoscope (2) and is slidably located therein. A device (27) for determination of the relative position of the working instrument (3) to the endoscope (2) is configured to determine in an optical manner that the distal end (8) of the working instrument (3) has reached a distal end (8) of the working channel (7). The position determination device (27) comprises a light conductor (28) that is attached to the working instrument (3) and configured to receive light surrounding the working instrument (3) in the vicinity of its distal end (14), wherein based on the light received by the light conductor (28) the relative position of the light conductor (28) and thus the working instrument (3) in relation to the endoscope (2) can be determined.

Abstract: A supply apparatus for an electrosurgical system as well as an electrosurgical system having a supply apparatus. In addition to a generator, the supply apparatus has a measurement signal source that is able to provide a measurement signal (XM) in form of an alternating voltage and/or an alternating current. An impedance parameter (P) resulting from the measurement signal (XM) can be evaluated. A switch device of supply apparatus can be switched between multiple switch conditions (C1-C5). In the different switch conditions (C1-C5) different evaluation functions can be realized by means of the evaluation unit (50). The measurement signal source can apply a measurement signal to a treatment current path (B) at a working connection of supply apparatus as well as to a neutral current path (N) between neutral connections of supply apparatus. In doing so, by means of the measurement signal (XM), treated tissue can be analyzed as well as a contact between neutral electrode and the patient can be checked or monitored.

Abstract: An electrosurgical instrument configured for connection to a supply apparatus for operation. The instrument has an end opening at the distal end and supports at least one electrode in the area of the end opening to which an alternating voltage potential can be applied. Directly adjoining the end opening, a liner of the electrosurgical instrument limits a flow chamber inside the liner. With distance to the end opening a flushing channel opens out into the flow chamber via an exit opening and a suction channel opens out into the flow chamber via an inlet opening. A flushing fluid can be introduced in the flow chamber via the flushing channel and can be extracted by suction via the suction channel.

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: 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: 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: 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.