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GB2190751A - Apparatus and method for monitoring organs of the body - Google Patents
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GB2190751A - Apparatus and method for monitoring organs of the body - Google Patents

Apparatus and method for monitoring organs of the body

Info

Publication number
GB2190751A
GB2190751A GB08711445A GB8711445A GB2190751A GB 2190751 A GB2190751 A GB 2190751A GB 08711445 A GB08711445 A GB 08711445A GB 8711445 A GB8711445 A GB 8711445A GB 2190751 A GB2190751 A GB 2190751A
Authority
GB
United Kingdom
Prior art keywords
impedance
signals
subject
patient
pairs
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.)
Granted
Application number
GB08711445A
Other versions
GB2190751B (en
GB8711445D0 (en
Inventor
John Andrew Sutton
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB8711445D0 publication Critical patent/GB8711445D0/en
Publication of GB2190751A publication Critical patent/GB2190751A/en
Application granted granted Critical
Publication of GB2190751B publication Critical patent/GB2190751B/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
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0535—Impedance plethysmography

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Radiology & Medical Imaging (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)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

Apparatus for monitoring body functions comprises oscillator means (1) for generating a very high frequency oscillation, an oscillator driven constant current generating source (2), at least one pair of current driven electrodes (4) for attachment to the body of a patient, at least two pairs of voltage sensing electrodes (5) for attachment to the body of the patient, tuner/voltage amplifier means (6) tuned to the frequency of the generator means (1), converter means (7) for measuring impedance changes between pairs of voltage sensing electrodes (5), impedance indicator means (8), isolating circuit means (9) for receiving signals from the impedance converter (7), filter means (10) for excluding electronic or biological fluctuations from the equipment or the subject and a impedance offset control, and recorder means (11 or 12) for recording process and analysing the subject signals, the subject signals being received by the recorder means (11 or 12) as separate signals. Methods of producing a record of the function and volume of a hollow visceral organ are also described.
GB08711445A 1984-11-15 1985-11-15 Apparatus and method for monitoring organs of the body Expired GB2190751B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848428831A GB8428831D0 (en) 1984-11-15 1984-11-15 Monitoring organs of body
PCT/GB1985/000521 WO1986002819A1 (en) 1984-11-15 1985-11-15 Apparatus and method for monitoring organs of the body

Publications (3)

Publication Number Publication Date
GB8711445D0 GB8711445D0 (en) 1987-06-17
GB2190751A true GB2190751A (en) 1987-11-25
GB2190751B GB2190751B (en) 1988-07-13

Family

ID=10569750

Family Applications (2)

Application Number Title Priority Date Filing Date
GB848428831A Pending GB8428831D0 (en) 1984-11-15 1984-11-15 Monitoring organs of body
GB08711445A Expired GB2190751B (en) 1984-11-15 1985-11-15 Apparatus and method for monitoring organs of the body

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB848428831A Pending GB8428831D0 (en) 1984-11-15 1984-11-15 Monitoring organs of body

Country Status (5)

Country Link
EP (1) EP0235137A1 (en)
JP (1) JPS62501267A (en)
AU (1) AU5069685A (en)
GB (2) GB8428831D0 (en)
WO (1) WO1986002819A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2445454A (en) * 2007-01-03 2008-07-09 Gen Electric Combined uterine activity and foetal heart rate monitoring device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0359397B1 (en) * 1988-08-19 1995-05-03 Hewlett-Packard Company Device for detection of uterine contractions
US5807270A (en) * 1994-06-20 1998-09-15 Williams; Christopher Edward Brain damage monitor
US6631292B1 (en) * 2001-03-23 2003-10-07 Rjl Systems, Inc. Bio-electrical impedance analyzer
AU2002952265A0 (en) * 2002-10-25 2002-11-07 Upfal, Jonathan Implantable sensor
US20090204017A1 (en) * 2008-02-12 2009-08-13 Pandit Ashit M Uterine activity monitoring using impedance plethysmography

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US387436A (en) * 1888-08-07 o neil
FR2294677A1 (en) * 1973-11-09 1976-07-16 Thomson Medical Telco CARDIO-PULMONARY DIAGNOSIS SYSTEM ALLOWING RESPIRATORY AND HEMODYNAMIC FUNCTIONAL EXPLORATION OF SEPARATE LUNGS OR THEIR SEGMENTS
US4059169A (en) * 1976-02-09 1977-11-22 Hagen Winston H Monitor for biological volume changes
FR2354744A1 (en) * 1976-06-16 1978-01-13 Commissariat Energie Atomique OCCLUSION RHEOPLETHYSMOGRAPHY DEVICE
WO1983004369A1 (en) * 1982-06-07 1983-12-22 Healthdyne, Inc. Respiration or respiration and electrocardiographic monitor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874368A (en) * 1973-04-19 1975-04-01 Manfred Asrican Impedance plethysmograph having blocking system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US387436A (en) * 1888-08-07 o neil
FR2294677A1 (en) * 1973-11-09 1976-07-16 Thomson Medical Telco CARDIO-PULMONARY DIAGNOSIS SYSTEM ALLOWING RESPIRATORY AND HEMODYNAMIC FUNCTIONAL EXPLORATION OF SEPARATE LUNGS OR THEIR SEGMENTS
US4059169A (en) * 1976-02-09 1977-11-22 Hagen Winston H Monitor for biological volume changes
FR2354744A1 (en) * 1976-06-16 1978-01-13 Commissariat Energie Atomique OCCLUSION RHEOPLETHYSMOGRAPHY DEVICE
WO1983004369A1 (en) * 1982-06-07 1983-12-22 Healthdyne, Inc. Respiration or respiration and electrocardiographic monitor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2445454A (en) * 2007-01-03 2008-07-09 Gen Electric Combined uterine activity and foetal heart rate monitoring device
GB2445454B (en) * 2007-01-03 2011-09-14 Gen Electric A combined uterine activity and fetal heart rate monitoring device

Also Published As

Publication number Publication date
WO1986002819A1 (en) 1986-05-22
GB2190751B (en) 1988-07-13
EP0235137A1 (en) 1987-09-09
GB8711445D0 (en) 1987-06-17
JPS62501267A (en) 1987-05-21
GB8428831D0 (en) 1984-12-27
AU5069685A (en) 1986-06-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee