Abstract: An apparatus is disclosed for measuring the throughflow of a body liquid, in particular an apparatus for measuring the flow of urine in urological function diagnostics. The apparatus comprises a collecting funnel connected to a tube, which can be suspended in a WC bowl. In the tube are two axially spaced transducers one for continuously determining the electrical conductivity of fluid flowing through the tube from the funnel and the other for determining the specific electrical conductivity of the liquid. An electronic evaluation system determines the throughflow of the liquid upon the basis of the values determined by the transducers.

Abstract: The device comprises a rotationally driven surgical instrument incorporating a hand-held element having a mount rotatably installed therein for reception of interchangeable cutting and milling inserts, a driving motor for driving the mount receiving the tool inserts, a control unit for controlling the driving motor with means of setting the rotational speed and of preselecting the rotational speed range and direction of rotation as well as a digital indicator for displaying the rotational speed set up in each case. For the purpose of accessible storage of setting data, the control unit incorporates a non-volatile read-write memory for digital storage of rotational speeds, a code carrier as well as a coding/decoding arrangement.

Abstract: In an apparatus for the insufflation of gas into a body cavity the dynamic pressure of the gas flow conducted to the body cavity and the static intra-abdominal pressure in the body cavity are detected with at least one measuring transducer. The electrical output signal of the measuring transducer detecting the pressure is converted by difference formation with a compensation signal, which substantially takes into account the resistance to flow of the instrument conducting the gas into the body cavity, into a difference signal corresponding to the static intra-abdominal pressure.

Abstract: The instant invention relates to a process for the blending of bulk materials by means of a jet gas blender, whereby the blending porcess is initiated only when full gas pressure is reached and when the valve immediately upstream of the storage tank (3) has been closed. At the end of the set time period "t.sub.1 " the valve (4) leading to the blending container (6) is closed in effect simultaneously and the valve (4.1) leading to the storage tank (3) is reopened, whereby the blended material settles in the blending container (6) without being disturbed by turbulence in this control position and whereby this phase is maintained for a set period of time.Only at the end of that period of time is the line cross-section leading to the filter (8) opened to allow exhaust air to go through, and its passage is thereby adjusted so that the quantity of exhaust air going through the filter remains approximately constant per time unit.

Abstract: An endoscopic television system includes: a character generator which is controlled by a keyboard to store characters selected by actuation of the keyboard in a character store; an image control trigger by synchronization pulses derived from an endoscopic image video signal to read out the stored characters in the character store and to generate a character video signal; a mixer for mixing the endoscopic image video signal and the character video signal to generate a composite signal that is supplied to a television monitor. The characters are displayed on the television monitor in the portion of the screen not occupied by the endoscopic image.