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. In the X-Y mode, two pairs of kinesiograph waveforms may be displaced with respect to each other on the left and righthand sides of the CRT screen. A multiplexer for the X and Y axes allows a real-time kinesiograph waveform to be superimposed on the same stored waveform to facilitate mandibular movement comparisons. The system may also operate in a sensor positioning mode in which a line connecting the optimum position of the sensors and the current position of the sensors is generated on the screen of the CRT.
Abstract:
L'invention concerne un procédé et un dispositif utilisa bles par un chirurgien dentiste pour tailler les dents des patients et par un prothésiste pour fabriquer les prothèses correspondantes. Le porte-outil (16) peut se déplacer suivant les trois directions (36), (39), (49). Les mouvements de l'outil chirurgi cal (15) et la mesure dss résistances instantanées qu'il rencontre sont detectés, enregistrés et traités dans des unités logiques susceptibles de définir la forme et l'épaisseur idéales d'une prothèse, puis de commander une machine- outil usinant cette prothèse. Application : élimination des risques d'erreurs pour la fabrication des prothèses, notamment pour les bridges prenant appui sur plusieurs moignons.
Abstract:
To determine the degree of neuromuscular blockage, the apparatus of the invention electrically, supramaximally stimulates the motor nerve of a patient by stimulus means, applies the resulting electromyogram (EMG) produced by the muscle associated with that motor nerve and integrates the amplified EMG with respect to time. The integrated, amplified EMG is then displayed. In a preferred embodiment of the invention means are also provided for displaying the integrated, amplified EMG, taken after a muscle relaxant has been administered to the patient, as a ratio of a control EMG taken with the apparatus before the administration of the drug.
Abstract:
A medical diagnostic apparatus has a lever (3) which is attached to a swivelling axis (30) and which, in order to produce a reaction torque, is connected with the pistons (5, 6) of a hydraulic cylinder (2) in such a way that an alternating rotary movement of the lever (3) is converted to a translational reciprocating movement of the piston (5, 6). A measuring instrument measures the pressure in the hydraulic cylinder (2). A display device displays the measured pressure. In order to obtain such a medical diagnostic apparatus of simple, compact design, the swivelling axis (3) passes transversely through the cylinder (2) and is connected (30) inside the cylinder (2) with the pistons (5, 6) by means of a gear (7, 8).
Abstract:
The force applied to a measuring section is resolved into two components acting at opposite ends of a measuring section. Each component is resolved into a vertical and a horizontal part. The two vertical parts obtained are measured separately. The measurement values are cyclically scanned in a scanning sequence in the direction of movement of the living organism and memorized so that force, location, duration and variation with time can be determined. The measuring surface is subdivided into layers perpendicular to the direction of movement. A measuring section is narrower than the foot and longer than the track width. The force transducer (3) comprises a rigid transverse beam supported on both sides on a sensor block (7) containing a measurement transducer (23) on which the transverse beam acts vertically. The transverse beam is mounted so that it can only move vertically and is supported on a measuring spring (43), preferably a leaf spring, which abuts the sensor block (7). The measurement transducer (23) measures the vertical movement of the measuring spring (43). A transmission element (47) is arranged between the measuring spring (43) and the measurement transducer (23) and acts on the measuring spring (43).
Abstract:
Method for generating an electrical output signal according to the ridges (4) and valleys (3) of a finger (5) placed against a contact surface (10) of a finger transducer, said contact surface (10) comprising an elastomer (13) with a reflecting layer (15), by directing the beam from a transducer light source (17) at said reflecting layer (15) and detecting the light scattering from said reflecting layer (15), achieved by employing imaging of an image plane (24) close to but behind the reflecting layer plane (25) of said transducer to avoid spectral frequency doubling. The transducer light source (17) comprises a pulsing light source (LED) coupled to an electrical circuit (MCC) designed to control and diagnose the transducer.
Abstract:
An apparatus having a toe support portion (18), an arch support portion (20) and a heel support portion (22), each of which are mounted along a longitudinal axis to be aligned with the elongate dimension of the foot, so as to be engageable with the respective portions thereof. The supports are movable along a vertical axis and rotatable about the longitudinal axis. A displacement means (66) is also provided in coupling engagement with each support portion to displace vertically one of the support portions in response to vertical displacement of another of the support portions. A method is also disclosed for determining the neutral alignment position of a foot, while a further method is provided for ascertaining the condition of the posture of a person.
Abstract:
A sway monitor for clinical use having two or more ultrasound transmitters (1A, 1B) and associated receivers. Rapid pulses of ultrasound are directed towards a subject (2) whose swaying movements towards or away from each transmitter are assessed by measuring the time taken for the reflected beam to be detected. The data may be continuously analysed and stored by means of a computer system (17) and/or recording equipment.
Abstract:
The arrangement of veins in a unique characteristic of an individual. Identification is performed by means of a detector (9) which scans a region of the skin (6) and detects the position of subcutaneous blood vessels (8) by measurement of a parameter such as the reflection of incident radiation. Comparison of the measured pattern with a predetermined pattern provides identification of the individual.
Abstract:
The object of the invention is to determine the coordinates for arbitrary points on the contour of any body (1). This is achieved by producing a line (13) circumventing the body (1). The circumferential line (13) is moved along the body (1) and is reproduced in various positions. In each position the coordinates along the circumferential line (13) are determined and stored in a memory unit (9), enabling them to be subsequently used for various purposes such as planning dosage, radiation and the like for said body (1), and for calculating distances or volumes prior to taking corrective measures.