GB718131A - Means for detecting and recording electrical changes in the body resultant on its physiological processes - Google Patents

Means for detecting and recording electrical changes in the body resultant on its physiological processes

Info

Publication number
GB718131A
GB718131A GB4157/52A GB415752A GB718131A GB 718131 A GB718131 A GB 718131A GB 4157/52 A GB4157/52 A GB 4157/52A GB 415752 A GB415752 A GB 415752A GB 718131 A GB718131 A GB 718131A
Authority
GB
United Kingdom
Prior art keywords
amplifier
recording
transmitter
receiver
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4157/52A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHARLES CLAYTON BREAKELL
FRANK CHRISTOPHERSON
Original Assignee
CHARLES CLAYTON BREAKELL
FRANK CHRISTOPHERSON
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHARLES CLAYTON BREAKELL, FRANK CHRISTOPHERSON filed Critical CHARLES CLAYTON BREAKELL
Priority to GB4157/52A priority Critical patent/GB718131A/en
Publication of GB718131A publication Critical patent/GB718131A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0004—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by the type of physiological signal transmitted
    • A61B5/0006—ECG or EEG signals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0209—Special features of electrodes classified in A61B5/24, A61B5/25, A61B5/283, A61B5/291, A61B5/296, A61B5/053
    • A61B2562/0215—Silver or silver chloride containing

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Physiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

718,131. Recording electrical changes in the body. BREAKELL, C. C., PARKER, C. S., and CHRISTOPHERSON, F. May 18, 1953 [Feb. 16, 1952], No. 4157/52. Class 81(2) Apparatus for detecting and recording electrical changes in the body resultant on its physiological processes comprises a detecting device or, devices for application to the body, a portable radio transmitter to be carried by the person being investigated and in electrical connection with the detecting device a radio receiver for receiving signals radiated by the transmitter and converting the signals to a form suitable for application to a recording device, and a recording device whereto the receiver's output is applied. Silver disc electrodes applied to the body receive electric potentials which are passed through a transmitter comprising an amplifier 1, an oscillator 2 turned to a fixed frequency between 2,000 and 1,500 cycles/sec for producing - amplitude modulation, a phase modulator 4 connected with a crystal oscillator 3, frequency multipliers 5 and an output stage 6 connected with an aerial which may be mounted on the transmitter or is in the form of a flexible metallic strip attached to the patient's clothing. More than one channel may be provided between the patient and the phase modulator 4, the oscillators 2 of each channel being tuned to different frequencies to avoid interference: The receiver is of superheterodyne type and comprises a mixer, 1. F. amplifier and limiter 1r provided with a local oscillator 2r, a discriminator 3r, filter 4r, demodulator 5r and amplifier 6r. The output from the amplifier 6r is connected with a recording apparatus such as a cathode ray oscilloscope or a pen recorder. Each channel in the transmitting apparatus is provided with a separate channel in the receiver comprising filter, demodulator, amplifier and recording means in connection with the discriminator 3r.
GB4157/52A 1952-02-16 1952-02-16 Means for detecting and recording electrical changes in the body resultant on its physiological processes Expired GB718131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4157/52A GB718131A (en) 1952-02-16 1952-02-16 Means for detecting and recording electrical changes in the body resultant on its physiological processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4157/52A GB718131A (en) 1952-02-16 1952-02-16 Means for detecting and recording electrical changes in the body resultant on its physiological processes

Publications (1)

Publication Number Publication Date
GB718131A true GB718131A (en) 1954-11-10

Family

ID=9771803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4157/52A Expired GB718131A (en) 1952-02-16 1952-02-16 Means for detecting and recording electrical changes in the body resultant on its physiological processes

Country Status (1)

Country Link
GB (1) GB718131A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126559B (en) * 1955-02-28 1962-03-29 Hans Joachim Schlegel Dr Device for measuring blood flow-dependent, pulse-synchronous capacitive changes in impedance in cell tissues in the depths of hollow organs of human or animal living beings
US3465103A (en) * 1966-06-23 1969-09-02 United Aircraft Corp System for combining plural isolated physiological signals without mutual interference and with reduced noise level
US3603881A (en) * 1968-03-01 1971-09-07 Del Mar Eng Lab Frequency shift telemetry system with both radio and wire transmission paths
US3646930A (en) * 1969-11-03 1972-03-07 Johnnie Walker Medical Electro Automatic physiological recording and alarm system for hospitals
US3662758A (en) * 1969-06-30 1972-05-16 Mentor Corp Stimulator apparatus for muscular organs with external transmitter and implantable receiver
US4343315A (en) * 1980-06-20 1982-08-10 Grey-Mac Fitness, Ltd. Method of and apparatus for measuring the physical condition of a person
WO1986005675A1 (en) * 1985-04-05 1986-10-09 Neurodyne Corporation Telemetry system for an implantable device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126559B (en) * 1955-02-28 1962-03-29 Hans Joachim Schlegel Dr Device for measuring blood flow-dependent, pulse-synchronous capacitive changes in impedance in cell tissues in the depths of hollow organs of human or animal living beings
US3465103A (en) * 1966-06-23 1969-09-02 United Aircraft Corp System for combining plural isolated physiological signals without mutual interference and with reduced noise level
US3603881A (en) * 1968-03-01 1971-09-07 Del Mar Eng Lab Frequency shift telemetry system with both radio and wire transmission paths
US3662758A (en) * 1969-06-30 1972-05-16 Mentor Corp Stimulator apparatus for muscular organs with external transmitter and implantable receiver
US3646930A (en) * 1969-11-03 1972-03-07 Johnnie Walker Medical Electro Automatic physiological recording and alarm system for hospitals
US4343315A (en) * 1980-06-20 1982-08-10 Grey-Mac Fitness, Ltd. Method of and apparatus for measuring the physical condition of a person
WO1986005675A1 (en) * 1985-04-05 1986-10-09 Neurodyne Corporation Telemetry system for an implantable device

Similar Documents

Publication Publication Date Title
GB718131A (en) Means for detecting and recording electrical changes in the body resultant on its physiological processes
US2552585A (en) Apparatus for determining listening habits of radio receiver users
GB883177A (en) Improvements in single-sideband speech-transmission systems
US2203758A (en) Television system
US2603745A (en) Panoramic receiving system
SU587641A1 (en) Tv system
GB360891A (en) Electrical frequency control systems
JPS5412509A (en) Eliminating system for interference distortion caused in modulation signal by mutual interference of fm wave signals
JPS57202198A (en) Portable stereo audio equipment
GB643694A (en) Improvements in or relating to television receivers
GB554914A (en) Application of frequency dividers to the reception of signal modulated electric carrier waves
GB437731A (en) Improvements in and relating to wireless and like apparatus for the reception of modulated carrier oscillations
GB1117300A (en) Field modulated gyromagnetic resonance spectrometer
GB734625A (en) Improvements relating to speaking radio beacons
GB376175A (en) Improvements in or relating to radio receivers
JPS547220A (en) Adaptive lincomlpex system
MILLER Testing and assessment of co-channel video interference on television, Attachment 1[Final Report]
GB642241A (en) Improvements in television receiving apparatus
ASH et al. High performance TV receiver(surface acoustic wave devices)[Final Report]
AU250014B2 (en) Improvements in radio transmission and receiving systems for transmitting two signals comprising correlated frequencies by combined amplitude and phase modulation
GB648838A (en) Improvements in or relating to cathode ray tube apparatus suitable for use in radar and like systems
GB289012A (en) Improvements in or relating to radio and the like receivers
TORGERSEN Instrumentation for spectrum analysis of short bursts and pulses recorded on magnetic tape(Instrumentation for spectrum analysis of short bursts and pulses of Jovian decametric radio emission recorded on magnetic tape)
AU4518159A (en) Improvements in radio transmission and receiving systems for transmitting two signals comprising correlated frequencies by combined amplitude and phase modulation
CARDOT Frequency compression and characteristics of fm receivers for satellite communications