Abstract: A disk-shaped sound recording medium includes a disk element with shaped outer contour with at least two contour areas which are shaped mutually complementarily to one another. At least two sound recording media can put together in the plane of the disk in the manner of a jigsaw puzzle. One of the contour areas is made curved-shaped with the disk radius (R) in the inward direction and, approximately in a center of this one of the contour areas, with an outwardly directed, undercut tongue. Another of the contour areas is provided with a groove, which is formed in a circular outer contour. The groove is shaped complementary to the tongue.

Abstract: The invention relates to a gas connection device for insufflation equipment, in particular for mini-invasive surgery as well as laparoscopy and hysteroscopy. The invention includes a connection port 3 for the gas supply, a pressure reducer 4, a safety valve 5, a gas outlet port 7 provided with a solenoid vane 6, and a manometer 8.In order to have an economic assembly of all components of the gas connection device pre-assembled in an insufflation device, it is provided, according to the invention, that the connection port 3, the pressure reducer 4, the safety valve 5, the solenoid valve 6, with the gas outlet port 7, and the manometer 8 are connected to a common metal main body 1, and are connected to a common metal main body 1, and are connected with main body 1.

Abstract: The present invention pertains to a device for measuring the urine flow (Uroflow) of a patient, consisting of a measuring head provided with a funnel and an outflow port, and of an electronic evaluating unit.In a prior-art measuring device of this class, the measuring head is mounted oscillatingly in a housing. This has disadvantages in terms of the mechanical design of the measuring device and the accuracy of measurement.To simplify the mechanical design and to increase the accuracy of measurement, the measuring head 1 is provided, according to the present invention, with a slotted pitot tube 4 forming the outflow port 30 and with a pressure sensor 18 measuring the dynamic pressure, and the electronic evaluating unit 9 calculates the flow values from the flow-proportional dynamic pressure measured.

Abstract: The present invention pertains to a device for irrigation of and aspiration from body cavities, especially during surgical laparoscopy, comprising a delivery pump and a suction pump and tubing lines, which are connected to these and lead to the body cavity. A device for irrigation of and aspiration from body cavities, which can be operated in a very simple manner and fully meets sterility requirements is provided.

Abstract: The invention relates to a pressure measurement device (1) for fluids flowing in lines (5, 6), particularly for the flexible tubing lines of pressure-controlled roller pumps (22) for use in arthroscopy and urethroscopy. A membrane (8,8') is provided such that it is impacted on the inside by the fluid. A first pressure sensor (12) is connected to the outside of the membrane for measurement of fluid pressure. The first pressure sensor is connected to an evaluating electronic unit.A second pressure sensor (13) is connected to the evaluating electronic unit and is assigned to the outer side of membrane (8,8'), so that it is possible to effect a pressure monitoring based on the second pressure measurement, e.g., in the form of a measurement of pressure difference.

Abstract: The invention relates to a procedure for the perfusion of body cavities with a fluid led from a dispenser reservoir 3 via a perfusion line 10 and a medical instrument 6. Pump 4 is connected with the perfusion line 10, a pressure sensor 5 is connected between pump 4 and medical instrument 6 to perfusion line 10, and an adjustment and measurement electronic system 12 is connected to pressure sensor 5 and pump 4.To build up, maintain, and measure as precisely as possible a preselected and precisely determined pressure in the body cavity, according to the invention the adjustment and measurement electronic system 12 determines the actual pressure in body cavity 1 by evaluating the pressure P.sub.IST measured by pressure sensor 5, the volume flow V supplied by pump 4, and the conductance G of the perfusion line 9 between pressure sensor 5 and instrument 6 and conductance G of instrument 6, and the pressure P.sub.SOLL in body cavity 1 is maintained constant at preset level P.sub.

Abstract: The invention relates to a method and device for insufflating gas, in particular CO.sup.2 into the human or animal body, especially for laparoscope, with an insufflation instrument, for example, a Veress inflow needle, with the following structures arranged successively along a gas line a: pressure reducer 1a throughflow meter and pressure meter and with a control circuit connected with the throughflow meter and a pressure meter via respective control lines. The device is without noise-generating magnetic valves, and the intra-abdominal pressure can be measured continuously without elaborate switch overs. The pressure reducer is electrically controllable and connected with the evaluating and control circuit via a control line and is controllable via control line as a function of a clock generator and a nominal pressure generator.

Abstract: The insufflator is used for introducing limited quantities of carbon dioxide into the human body for operational purposes, particularly for laparoscopy or hysteroscopy, and is of the type comprising two pressure reducers, in series, followed by a gas flow monitoring device through which carbon dioxide is directed from a gas supply to the human body. The two pressure reducers are constantly adjusted to fixed gas supply pressures, and the monitoring device comprises a cylindrical expansion container having a central inlet port and a large diameter, and in whose peripheral zone the gas flow velocity approaches a zero rate. First and second sensing elements for the measured variable are provided in the expansion container, with the first sensing element being located immediately in the area of the inlet port and the second sensing element being located close to the cylindrical side wall at the maximum possible radial spacing from the first sensing element.

Abstract: A dilator for medical applications particularly for dilating the cervical canal of the uterus in which a rigid rod-shaped probe has a profiled head section on the free end of the probe. A housing for supporting the probe has also a vibrating arrangement for applying vibrations transversely to the longitudinal axis of the probe. The frequency and amplitude of vibration of the probe are continuously variable and independent of each other. An adjusting slide for continuous variable adjustment of the vibration frequency or amplitude, is provided on a handle located at right angles to the longitudinal axis of the probe. The vibrating arrangement within the housing is releasably connected to a power supply via a cable and quick-action couplings.

Abstract: The apparatus, used for introducing limited quantities of carbon dioxide into the human body for operational purposes, particularly laparoscopy, includes a control device for delivering the carbon dioxide, a connecting nipple on the control device for connecting a flexible tubing to a Veress needle introducable into the body and a pressure gauge for indicating the pressure present in the body cavity. A second connection nipple is provided on the control device and connected by a nipple to the pressure gauge. The second connection nipple is connected by a further flexible tubing either to a dual Veress needle or to a second single Veress needle, so that the pressure gauge is directly connected with the body cavity rather than through the operative Veress needle.