GB1219179A - Patient monitoring safety system - Google Patents

Patient monitoring safety system

Info

Publication number
GB1219179A
GB1219179A GB52612/68A GB5261268A GB1219179A GB 1219179 A GB1219179 A GB 1219179A GB 52612/68 A GB52612/68 A GB 52612/68A GB 5261268 A GB5261268 A GB 5261268A GB 1219179 A GB1219179 A GB 1219179A
Authority
GB
United Kingdom
Prior art keywords
patient
transistors
nov
event
failure
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
GB52612/68A
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 GB1219179A publication Critical patent/GB1219179A/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
    • A61B5/276—Protection against electrode failure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/908—Patient protection from electric shock

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (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)
  • Amplifiers (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

1,219,179. Protecting transistor amplifiers. BECKMAN INSTRUMENTS Inc. 6 Nov., 1968 [20 Nov., 1967], No. 52612/68. Heading H3T. [Also in Divisions G1 and H2] In an apparatus for measuring biopotentials or bioimpedances where conductive electrodes are applied to a patient's skin, a system to prevent a hazardous level of current flow into the patient is included. Transistors Q 4 and Q 5 are connected in series between positive and negative power supplies 23, 24, respectively and the patient, which transistors are turned on by transistors Q 6 and Q 7 respectively, so that in the event of failure of either power supply, both supplies are isolated from the patient. In addition, to protect the patient from excessive base currents from terminals 10, 11 of transistors Q 1 , Q 2 , diodes D 1 , D 2 of opposed polarity are connected between the collector terminals. This arrangement prevents saturation of either transistor in the event of failure of the other since the diodes clamp respective collector electrodes to the potential of the other. Each of the transistors Q 1 , Q 2 may be replaced by a Darlington pair.
GB52612/68A 1967-11-20 1968-11-06 Patient monitoring safety system Expired GB1219179A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68443267A 1967-11-20 1967-11-20

Publications (1)

Publication Number Publication Date
GB1219179A true GB1219179A (en) 1971-01-13

Family

ID=24748038

Family Applications (2)

Application Number Title Priority Date Filing Date
GB52612/68A Expired GB1219179A (en) 1967-11-20 1968-11-06 Patient monitoring safety system
GB25347/70A Expired GB1219180A (en) 1967-11-20 1968-11-06 Patient monitoring safety system

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB25347/70A Expired GB1219180A (en) 1967-11-20 1968-11-06 Patient monitoring safety system

Country Status (6)

Country Link
US (1) US3518986A (en)
JP (1) JPS4812158B1 (en)
DE (1) DE1808639A1 (en)
FR (1) FR1592353A (en)
GB (2) GB1219179A (en)
SE (1) SE361811B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4818671B1 (en) * 1969-06-06 1973-06-07
US3620220A (en) * 1969-10-01 1971-11-16 Cordis Corp Cardiac pacer with redundant power supply
US3848262A (en) * 1973-04-06 1974-11-12 Gte Automatic Electric Lab Inc Drum memory protect arrangement
US3889184A (en) * 1974-03-25 1975-06-10 John M Bass Electronic hazard tester for medical facilities
US3910258A (en) * 1974-04-18 1975-10-07 Humetrics Corp Cerebral activity monitor
US3989051A (en) * 1974-09-30 1976-11-02 Valentin Matveevich Nozhnikov Apparatus for current pulse action upon central nervous system
US3968802A (en) * 1975-01-24 1976-07-13 Medtronic, Inc. Cautery protection circuit for a heart pacemaker
US4302791A (en) * 1979-09-19 1981-11-24 The United States Of America As Represented By The Secretary Of The Air Force Power supply sequencing apparatus
US4745923A (en) * 1985-11-20 1988-05-24 Intermedics, Inc. Protection apparatus for patient-implantable device
US4796630A (en) * 1987-03-23 1989-01-10 Telectronics N.V. Cardiac pacemaker with combined defibrillation and electrosurgery protection
FR2708860B1 (en) * 1993-08-11 1995-10-13 Ela Medical Sa Protection circuit for implantable electronic device.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB764813A (en) * 1955-03-09 1957-01-02 Standard Telephones Cables Ltd Improvements in or relating to electric oscillation generators
US3029808A (en) * 1957-07-30 1962-04-17 Arco Mfg Corp Direct current medical amplifier
NL232823A (en) * 1958-10-31

Also Published As

Publication number Publication date
GB1219180A (en) 1971-01-13
JPS4812158B1 (en) 1973-04-18
DE1808639A1 (en) 1969-07-17
FR1592353A (en) 1970-05-11
SE361811B (en) 1973-11-19
US3518986A (en) 1970-07-07

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