Abstract: In an ultrasonic wave transmitter for generating spatially incoherent ultrasonic radiation, which transmitter includes a source of ultrasonic acoustic radiation, there are provided a member holding a fluid medium in a region exposed to the acoustic radiation, a plurality of particles immersed in the medium and having a diameter of the order of magnitude of the wavelength of the acoustic radiation and an acoustic radiation impedance different from that of the medium, and a device for subjecting the particles to an irregular movement in the medium and within the region.

Abstract: A system for storing time-varying kinesiograph waveforms and continuously displaying the stored waveforms on the screen of a cathode-ray tube (CRT). In a recording mode, the waveforms are periodically sampled, digitized, and then stored in a block of random access memory reserved for that waveform. In a display mode, the Y axis of the CRT is driven by a digital-to-analog converter which receives digitized samples from the memory block corresponding to the displayed waveform. The X axis of the CRT is driven by a second digital-to-analog converter, which, in an X-Y mode, also receives digitized samples from a selected block of memory. In a sweep mode, the X axis digital-to-analog converter receives the continuously incrementing memory addresses, which read out digitized samples from the memory block for the displayed waveform. The system may also display an expanded portion of a waveform in the sweep mode by incrementing the memory address from one of several predetermined values.

Abstract: The acoustic wave generated by sudden thermal stress is used to obtain information non-invasively on the composition and structure of the stressed body. One or more acoustic transducers (1 and 1') are coupled with the surface of the body to intercept the acoustic wave and generate a corresponding electrical signal. The sudden thermal stress is induced by a pulse of radiation which deposits energy causing a rapid, but very small, rise of temperature. The radiation may be ionizing radiation, such as high energy electrons, photons (X-rays), neutrons, or other charged particles. The radiation may also be non-ionizing radiation, such as RF(2) and microwave electromagnetic radiation (3) and ultrasonic radiation (4). The electrical signal from the acoustic transducer (1) is amplified (5) and supplied to a digitizer (6), which provides a continuous stream of digital words corresponding to samples of the amplified signal.

Abstract: A hair dyeing device provides the manual hair dyeing functions which permit a hair dyeing for each bundle of hairs to be completed in single operation, and comprises two separable outer housing segments to be engaged for use and two inner housing parts each to be accommodated for forward and backward sliding movement in the corresponding outer housing segments. The outer housing segments as combined form slits at the opposite ends and a longitudinal intermediate slit between the opposite slits, the opposite slits allowing a bundle of hairs to be guided therethrough. The inner housing parts each include a bellows to control the volume thereof, and a hair dye feeder which includes a hair dye container and a hair dyeing teeth array.

Abstract: Measuring apparatus for determining changes in the volume of limbs or other body extremities by determining the cross-sectional area of such limbs may comprise a transmitter (10) including first and second transducers (11, 12) for positioning on the surface of the limb at a predetermined distance therebetween, and a receiver (20) including a receiver crystal (21) for positioning on the surface of the limb. The distance between the receiver crystal and the first and second transducers are represented by respective first and second chords (d.sub.1, d.sub.2) of the cross-section of the limb (C) and the predetermined distance between the first and second transducers is represented by a third chord (d.sub.3) of the limb cross-section (C).The measuring apparatus may also include a Pinger (10) and associated electrical circuitry for generating acoustic pulses at the first and second transducers (11, 12) for propagation along the first and second chords (d.sub.1, d.sub.

Abstract: Apparatus for the administration of solution to a patient at a precisely controlled rate. A length of flexible, collapsible tubing filled with the solution and connectable at one end to a conduit communicating with the vascular system of a patient is advanced through roller means, so that the solution expelled from the tubing is proportional to the rate of advancement of the tubing through the roller means.

Abstract: An apparatus is disclosed which is adapted to statically or intermittently apply a traction force to the body of a patient for therapeutic purposes. The apparatus includes a novel control means for cyclically reversing the direction of rotation of the wind-up drum upon predetermined minimum and maximum forces being present in the tension cord, and wherein the actual tension in the cord is monitored by a control circuit which provides an electrical output which is linearly porportional to the tension. The output signal is fed to a comparator circuit, where it is compared with independently selectable signals representing minimum and maximum tension forces, to control the wind-up and wind-down of the cord on the drum. The apparatus further includes several safety features for assuring the proper and safe functioning of the apparatus.

Abstract: In an exemplary embodiment, a measurement network at a bedside monitoring station can be sequentially stepped through a series of measurement modes either at a bedside monitoring station or at a central monitoring station. A serial in parallel out shift register has successive active positions corresponding to the successive measurement modes and may be stepped either by means of a local push button switch, or by means of a respective corresponding push button switch at the central station. At the central station, a decade counter and decoder arrangement drives a numerical readout for each local station for the purpose of representing each of the local measurement modes. A series of reset circuits couple the outputs of the first shift register stages of the respective local stations with the reset input of a corresponding decade counter such that each time the associated shift register stage is placed in an active state the counter is placed in an initial count condition.

Abstract: An insert section of an ultrasonic probe device which is bendably coupled by means of a hinge with two rotation shafts rotatably disposed within an insert section that is coupled to a universal joint. The distal tube can be bent freely by operating a control knob at a control section, so that an ultrasonic transducer member at the tip of the distal tube may be brought closely into contact with the body wall.