GB1186123A - Physiological Monitoring System - Google Patents

Physiological Monitoring System

Info

Publication number
GB1186123A
GB1186123A GB33230/68A GB3323068A GB1186123A GB 1186123 A GB1186123 A GB 1186123A GB 33230/68 A GB33230/68 A GB 33230/68A GB 3323068 A GB3323068 A GB 3323068A GB 1186123 A GB1186123 A GB 1186123A
Authority
GB
United Kingdom
Prior art keywords
pass filter
bias
july
turn
input
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
GB33230/68A
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.)
Beckman Coulter Inc
Original Assignee
Beckman Instruments Inc
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 Beckman Instruments Inc filed Critical Beckman Instruments Inc
Publication of GB1186123A publication Critical patent/GB1186123A/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
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/0809—Detecting, measuring or recording devices for evaluating the respiratory organs by impedance pneumography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/276—Protection against electrode failure

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physiology (AREA)
  • Pulmonology (AREA)
  • Cardiology (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

1,186,123. Transistor amplifying and switching circuits. BECKMAN INSTRUMENTS Inc. 11 July, 1968 [28 July,1967], No. 33230/68. Heading H3T. [Also in Division Gl] Filter circuit, Fig. 12.-A very low frequency band-pass filter, for use in electromedical apparatus, comprises an active low-pass filter 146 and high-pass filter 148 in front of an operational amplifier 150, and similar filters 152, 154 following. The input low-pass filter provides a 12dB roll-off at 2 Hz and the high-pass filter rolls-off at 0À2 Hz. The output filters are set to slightly wider limits, e.g. 4 Hz and 0À1 Hz to give a pass-band as illustrated in Fig. 14 (not shown). Switching circuit, Fig. 15, has an adjustable switching level according to the value of " bias " resistor R14. With no signal input Q 3 is OFF and Q 4 , Q 5 , ON. As the input signal approaches the " bias " value Q 3 begins to turn ON and Q 4 , Q 5 , begin to turn OFF; diode 162 conducts to swing Q 4 bias towards -12 V and rapid cut-off. Q 3 may be a " Darlington pair ".
GB33230/68A 1967-07-28 1968-07-11 Physiological Monitoring System Expired GB1186123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65680567A 1967-07-28 1967-07-28

Publications (1)

Publication Number Publication Date
GB1186123A true GB1186123A (en) 1970-04-02

Family

ID=24634644

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33230/68A Expired GB1186123A (en) 1967-07-28 1968-07-11 Physiological Monitoring System

Country Status (3)

Country Link
DE (1) DE1766759B2 (en)
FR (1) FR1575190A (en)
GB (1) GB1186123A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980075A (en) * 1973-02-08 1976-09-14 Audronics, Inc. Photoelectric physiological measuring apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4289142A (en) * 1978-11-24 1981-09-15 Kearns Kenneth L Physiological occurrence, such as apnea, monitor and X-ray triggering device
DE2949887A1 (en) * 1979-12-12 1981-06-19 Franz Josef Dipl.-Phys. Dankwart MEASURING DEVICE FOR THORAX IMPEDANCE MEASUREMENT
FR2471770A3 (en) * 1979-12-21 1981-06-26 Radiologie Cie Gle Respiration monitoring equipment - uses phase variation of trans-thoracic signal to identify respiratory activity
DE3110843C2 (en) * 1981-03-20 1982-12-02 Hewlett-Packard GmbH, 7030 Böblingen Breath monitor
US4449537A (en) * 1982-03-08 1984-05-22 Hewlett-Packard Gmbh Respiration monitor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980075A (en) * 1973-02-08 1976-09-14 Audronics, Inc. Photoelectric physiological measuring apparatus

Also Published As

Publication number Publication date
DE1766759B2 (en) 1974-10-31
FR1575190A (en) 1969-07-18
DE1766759A1 (en) 1972-02-24

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Legal Events

Date Code Title Description
429A Application made for amendment of specification (sect. 29/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
SPA Amended specification published
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees