Abstract: An electrosurgical device for recognizing tissue by means of spectral analysis of the light generated at an electrode. An acoustic or optical indicator device displays the tissue type permanently or when detecting certain tissue. Indicators, in particular optical indicators, are arranged in the application field of view, so as to support the user in response to making an incision.

Abstract: An operation device for operating a tool of a surgical instrument. The operation device has an operation element that is pivotably supported between an initial position and a working position. The operation element is movably coupled with the tool by means of a coupling device comprising a coupling link or consisting of a coupling link. The coupling link is elastically deformable and effectuates a resetting torque due to the elastic deformation in case the operation element is deflected out of the initial position, wherein the resetting torque urges the operation element back in the initial 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.

Abstract: A power generator (22) according to the invention is configured in a self-oscillating manner. It comprises two cascode circuits (31, 32), the outputs (A1, A2) of which are connected with a parallel resonant circuit (23) in order to excite it in push-pull manner. The input transistors (33, 35) of cascode circuits (31, 32) are cross-coupled, whereas the control electrodes of the output transistors (34, 36) are connected with non-varying potential. The power oscillator (22) is self-controlled such that the transistors (33-36) comprise lowest switching losses.

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: An instrument for electrosurgical treatment including an instrument head which forms a conveying body with a gas-fillable lumen. The lumen is connected to at least one first opening and at least one second opening in the instrument head. A primary stream of gas leaves through the first opening. The second opening is arranged such that a secondary stream exits the second opening next to the primary stream and/or with additional secondary streams out of additional second openings—away from the instrument head, at least partially peripherally surrounding the primary stream. An electrode is located in the flow of gas exiting out of the first opening for igniting a plasma between the first opening and the tissue to be treated. Due to the secondary stream accompanying the primary stream, an ignition of the plasma is successful even if the instrument is at a relatively large distance from the tissue.

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: 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 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 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 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 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 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.