LITHOTRIPSY ULTRASOUND LOCATING DEVICE

A lithotripsy ultrasound locating device comprises at least one locating transducer having a plurality of focal ranges and which is associated with a therapy transducer and is axially adjustable in relation to its focus; a position indicator which generates a signal representing the distance between the sound head of the locating transducer and the focus of the therapy transducer; a computer; a monitor on which a target mark representing the focus of the therapy transducer is displayed; and an electronic transmitter/receiver arrangement controlled by the computer in order to produce an image of a concretion to be destroyed which image is constantly optimal. The computer, controls, as a function of the signal emitted by the position indicator and by way of the transmitter/receiver arrangement, the focal range of the locating transducer which, at the given distance at that moment between the sound head and the focus of the therapy transducer always lies in the range thereof. The computer further generates a signal following up the target mark on the monitor according to the signal emitted by the position indicator. The following-up signal is passed to the monitor so that, where applicable, in each axial position of the locating transducer, the image of the concretion displayed by the monitor lies in the target mark.