Abstract: A high-frequency surgical device encompassing control electronics that control a power unit which utilizes a high-frequency transformer that is the only galvanic separation between the supply voltage and the patient/user unit.

Abstract: An endoscope for inspection of an observation cavity, in particular of an observation cavity in which a hot medium and/or infrared radiation is present, has a shaft in which an optical system is arranged. The shaft has an inner shaft and an outer shaft surrounding the latter at a distance, the optical system being arranged in the inner shaft. The shaft is configured in the region of its distal end in such a way that it is substantially opaque to electromagnetic radiation in the infrared spectral range.

Abstract: An endoscope is provided having a shaft and a handle extending to the side of the shaft at the proximal end. A mechanism is provided for pivoting the view direction in an observation area and has at least one operating element being engaged with the mechanism for actuating the mechanism. The at least one operating element is positioned on the handle, such that the mechanism is actuatable with at least one finger or thumb of the same hand holding the handle.

Abstract: A network bus for interconnecting a plurality of medical devices is described in which the devices are provided with modules adapted to communicate along the bus. Some of the devices are capable of assuming control over the bus with network master modules. A self-configuring capability is provided with which several network master capable medical devices automatically determine which network master is to take over control over the network bus and each individually is capable of controlling and operating the network. Each network master capable device has an extended network management module with which automatic master selection is achieved. This is done by monitoring or observing network communications for particular objects. Once such an object has been detected, a network master capable device is automatically selected to take over control on the basis of its priority.

Abstract: An apparatus for treating body tissue with ultrasound is provided having a generator and means for transmitting ultrasound to the tissue. The apparatus comprises a hollow probe for suctioning off treated tissue. The hollow probe is provided with a cutting blade in the region of the distal end of the probe and grasping means having a first and a second jaw are provided.

Abstract: What is described here is a system for centrally monitoring and/or controlling at least one unit for endoscopy and particularly for minimally invasive surgery, such as an insufflation means, a pump, a light source and/or a video camera, wherein the unit or units to be controlled are interconnected via interfaces. The inventive system is characterised by the combination of the following features: the units are connected via the interfaces on a self-configuring bus to a BUS master, the BUS master configures the bus automatically, the BUS master monitors the communication on the bus for correct execution.

Abstract: A medical gear pump is used for suction and irrigation, in particular for endoscopy or the laboratory, and it has two meshing gears as conveying elements, one of which is joined to a drive mechanism. The gears are received in non-journal-mounted fashion in openings, and are each equipped with a helical tooth set. It is proposed to configure the helical tooth set such that, when viewed along a surface line of said gears, at least two tooth tip/root contact points of said meshing gears are present, and a contour of tooth spaces of the one gear is matched to the teeth of the other gear in such a way that when a tooth has completely penetrated into the tooth space, its tooth tip almost completely fills up the tooth space radially inside the pitch circle.

Abstract: An endoscope is provided having a shaft and a handle extending to the side of the shaft at the proximal end. A mechanism is provided for pivoting the view direction in an observation area and has at least one operating element being engaged with the mechanism for actuating the mechanism. The at least one operating element is positioned on the handle, such that the mechanism is actuatable with at least one finger or thumb of the same hand holding the handle.

Abstract: A high-frequency surgical device encompassing control electronics that control a power unit which utilizes a high-frequency transformer that is the only galvanic separation between the supply voltage and the patient/user unit.

Abstract: A handpiece is disclosed for a multifunctional instrument for endoscopic surgery. The handpiece comprises a case; a connector disposed on the case and adapted to be connected to connecting lines such as electrical lines, liquid supply and discharge lines, and the like; at least one ultrasonic transducer arranged in the case; an ultrasonic sonotrode transmitting the ultrasonic energy; and at least one switch for controlling functions of the handpiece. The handpiece is characterized by, among other things, the provision that the sonotrode includes a long and thin probe section with a duct composed of several segments which are welded to each other.

Abstract: A pressure container for applying pressure to a flexible bag received in it and filled with a medical fluid, in order to deliver the fluid from the flexible bag, has a housing that has an opening for introduction of the bag. Also provided are a cover for covering the opening, an aperture for leading a fluid discharge line of the bag out of the pressure container, and a closure for sealed joining of the cover and housing. In the interest of simpler design and easier handling, it is proposed that the housing be configured as an upright hollow-cylindrical body, closed at the bottom and open at the top, the cross section of which has a flattened oval shape and corresponds roughly to the cross-sectional contour of a bag; and that the two opposing large-area upright sidewalls each have, in mirror-image fashion, the shape of a segment of a cylindrical shell whose lateral ends are joined by joining segments.

Abstract: The invention concerns a high-frequency surgical instrument comprising two electrodes which are designed as forceps jaws and to which a high-frequency current from a high-frequency generator can be applied such that a high-frequency current flows between the jaws through the area of tissue to be treated. The instrument according to the invention is characterized in that, for alternative cutting and coagulation, an electrically non-conductive spacer is provided which is introduced between the electrodes when tissue is being cut. At least one duct is provided for flushing and/or removal purposes.

Abstract: A cutting apparatus is provided with both a rotating inner blade and a stationary outer blade at its distal end and is connected to a drive unit disposed in the proximal region. The outer blade is spaced from the inner blade to form an irrigation passage through which an irrigation liquid is passed. A flushing duct is provided for fluid communication to the distal end. Additionally, a suction passage is provided to exhaust tissue particles.

Abstract: An apparatus is provided for insufflating gas into a bodily cavity of a human or animal body. The apparatus includes a gas source, a measuring device provided with sensors for sensing the actual gas pressure and the actual gas flow, and a control unit to which the output signals of the sensors are applied. The control unit triggers a pressure regulator, which reduces and regulates the pressure of the gas source to an adjustable insufflation pressure (desired gas pressure), and a flow regulator, which regulates the gas flow to an adjustable value (desired gas flow). For measuring the actual gas pressure, the control unit triggers the flow regulator in such a manner that the gas flow is set at a value between 10 and 40% of the desired gas flow during pressure measurement.

Abstract: A tube pump is disclosed for conveying liquid or viscous media, with a pump head on which at least two pump rollers are arranged, which rollers can be brought into engagement in succession with a tube wherein the medium to be conveyed is contained, in such a way that the medium is transported by squeezing the tube tightly. The tube pump according to this invention is distinguished in that the pump rollers can be shifted between two end positions, one of which positions (pumping position) permits the pumping operation and the other position (park position) permits a tube change without manual twisting of the pump head and without displacement of the tube bed.

Abstract: A tube pump for conveying liquid or viscous media, with a pump head on which at least two pump rollers are arranged which latter can act in succession on a tube, carrying the medium to be conveyed and located in the tube bed, in such a way that the medium is transported by squeezing the tube tightly, wherein the tube bed and the tube are fashioned so that the tube can be inserted in the tube bed in only one direction. This can be achieved by using end pieces of differing geometric forms and/or sizes, and/or providing that one end piece is magnetic and providing a magnetic sensor in the corresponding socket of the tube bed.

Abstract: A device for the irrigation and suction drainage of body cavities, especially in surgical laparoscopy, hysteroscopy, uroscopy, or arthroscopy. The device comprises two conventional pumps, each being equipped with a pressure sensor and being preferably designed as rotary tube pumps. The irrigation pump and the suction drainage pump are connected with each other by way of a control line, and they operate in a master-slave mode. Operation is very simple, in that only the irrigation pump needs to be adjusted and operated by the operator. Control of the suction drainage pump takes place automatically based on the measured values of both pressure sensors in the irrigation and suction drainage conduits and the set r.p.m.'s of the irrigation pump. The primary advantage of the device resides in that the suction drainage pump takes care automatically of uniform pressure and flow relationships at the site of the surgery independently of the adjustment of the irrigation pump.

Abstract: A medical pressure transducer is disclosed with a sterilizable pressure dome exhibiting two connections by means of which the pressure dome can be connected to a tube conduit system or the like, the internal pressure of which is to be measured, in such a way that the medium flowing through the tube conduit system passes through the inner space of the pressure dome.The inner space of the pressure dome is constituted by a housing, a sterilizable pressure dome diaphragm transmitting the pressure to an unsterilized pressure sensor, and a relief valve.

Abstract: Apparatus for positioning the body of a patient in relation to equipment for contactless comminution of concrements such that the focal point of equipment is made to coincide with a concrement; the patient who lies on a rest which is moved with the patient on it in a longitudinal direction, tilted about it, and moved also laterally and in a direction that is transverse to the longitudinal and lateral directions of movement; a water filled cushion with controlled water level is adapted for interpositioning between the equipment for comminution and focusing, and the patient, a plurality of differently oriented X-ray beams are provided for locating a concrement in the patient and images are marked through a light pen or the like on X-ray monitors; a control provides for homing-in the rest in relation to the comminution equipment such that its focal point coincides with the concrement as previously detected.

Abstract: Disclosed is an adapter assembly for accurately positioning a removable biosensor implanted in the cranium or skull cap. The assembly comprises an outer sleeve member insertable into a hole bored through the skull cap and an inner sleeve member coaxial with the outer sleeve. The sleeve members are constructed so as to permit slidable insertion and removal of the biosensor and to ensure accurate, tilt-free alignment thereof, thus enabling precise, error-free measurement.