GB864362A - Improvements relating to methods of and apparatus for defibrillation - Google Patents

Improvements relating to methods of and apparatus for defibrillation

Info

Publication number
GB864362A
GB864362A GB34758/58A GB3475858A GB864362A GB 864362 A GB864362 A GB 864362A GB 34758/58 A GB34758/58 A GB 34758/58A GB 3475858 A GB3475858 A GB 3475858A GB 864362 A GB864362 A GB 864362A
Authority
GB
United Kingdom
Prior art keywords
condenser
pulse
relay
charging
condensers
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
GB34758/58A
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.)
Ind & Medical Electronics Ltd
Original Assignee
Ind & Medical Electronics Ltd
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 Ind & Medical Electronics Ltd filed Critical Ind & Medical Electronics Ltd
Priority to GB34758/58A priority Critical patent/GB864362A/en
Publication of GB864362A publication Critical patent/GB864362A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
    • A61N1/39—Heart defibrillators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
    • A61N1/39—Heart defibrillators
    • A61N1/3906—Heart defibrillators characterised by the form of the shockwave
    • A61N1/3912—Output circuitry therefor, e.g. switches

Abstract

864,362. Electro-medical apparatus. INDUSTRIAL & MEDICAL ELECTRONICS Ltd., and LIGHTWOOD, R. Oct. 30, 1959 [Oct. 30, 1958], No. 34758/58. Class 81 (2). Apparatus for producing a pulse for defibrillation comprises means for charging a condenser which is subsequently disconnected from the charging source and connected to the patient, through whom it is partially discharged to provide the pulse. Timing means is provided for limiting the duration of the pulse. When power is supplied to the transformer T1, the condenser C2 is charged through rectifier W3, but closure of a key S3 causes energization of a relay A/3, the contacts A1, A2 of which disconnect the condenser from the supply and connect it to the output terminals a1, a2. At the same time a further contact A3 connects the power supply through rectifier W2 to condensers C3 . . . C8, in series with relay B/1. The initial charging surge energizes the relay B/1 which subsequently releases when the condenser charging rate falls. Consequently contact B1 is at first closed, to connect the condenser C2 to the patient, and then opened, to terminate the pulse, after an interval determined by the setting of switch S6, by means of which the number of parallel-connected condensers C3 . . . C8 is selected. When the switch S3 is released, relay A/3 reconnects condenser C2 to the charging circuit and contact A3 discharges the pulse timing condensers through R7. The magnitude of the pulse administered is determined by the transformer tapping switch S2.
GB34758/58A 1958-10-30 1958-10-30 Improvements relating to methods of and apparatus for defibrillation Expired GB864362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB34758/58A GB864362A (en) 1958-10-30 1958-10-30 Improvements relating to methods of and apparatus for defibrillation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34758/58A GB864362A (en) 1958-10-30 1958-10-30 Improvements relating to methods of and apparatus for defibrillation

Publications (1)

Publication Number Publication Date
GB864362A true GB864362A (en) 1961-04-06

Family

ID=10369601

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34758/58A Expired GB864362A (en) 1958-10-30 1958-10-30 Improvements relating to methods of and apparatus for defibrillation

Country Status (1)

Country Link
GB (1) GB864362A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231821B (en) * 1962-06-25 1967-01-05 Mine Safety Appliances Co Defibrillator
US3389704A (en) * 1965-12-06 1968-06-25 Zenith Radio Corp Discharge circuit for a defibrillator
US3527228A (en) * 1966-02-23 1970-09-08 Cardiac Electronics Inc Cardiac apparatus and switching circuit therefor
US3566876A (en) * 1967-12-14 1971-03-02 Hewlett Packard Co Defibrillator
US4077413A (en) * 1976-05-04 1978-03-07 The Burdick Corporation Defibrillator
US4349030A (en) * 1980-07-10 1982-09-14 Ross H. Zoll External noninvasive electric cardiac stimulation
FR2607015A1 (en) * 1981-12-14 1988-05-27 Zoll Ross Method and device for external cardiac stimulation
US5115807A (en) * 1986-05-14 1992-05-26 Ventritex Programmable defibrillator with pulse energy and resistance displays and methods of operating the same
US5237989A (en) * 1991-04-04 1993-08-24 Physio-Control Corporation Cardiac defibrillator with movable contact switch
US5411525A (en) * 1992-01-30 1995-05-02 Cardiac Pacemakers, Inc. Dual capacitor biphasic defibrillator waveform generator employing selective connection of capacitors for each phase
DE102018003655A1 (en) 2017-04-27 2018-10-31 Weinmann Emergency Medical Technology Gmbh + Co. Kg Method and device for defibrillation

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231821B (en) * 1962-06-25 1967-01-05 Mine Safety Appliances Co Defibrillator
US3389704A (en) * 1965-12-06 1968-06-25 Zenith Radio Corp Discharge circuit for a defibrillator
US3527228A (en) * 1966-02-23 1970-09-08 Cardiac Electronics Inc Cardiac apparatus and switching circuit therefor
US3566876A (en) * 1967-12-14 1971-03-02 Hewlett Packard Co Defibrillator
US4077413A (en) * 1976-05-04 1978-03-07 The Burdick Corporation Defibrillator
US4349030A (en) * 1980-07-10 1982-09-14 Ross H. Zoll External noninvasive electric cardiac stimulation
FR2607015A1 (en) * 1981-12-14 1988-05-27 Zoll Ross Method and device for external cardiac stimulation
US5115807A (en) * 1986-05-14 1992-05-26 Ventritex Programmable defibrillator with pulse energy and resistance displays and methods of operating the same
US5237989A (en) * 1991-04-04 1993-08-24 Physio-Control Corporation Cardiac defibrillator with movable contact switch
US5411525A (en) * 1992-01-30 1995-05-02 Cardiac Pacemakers, Inc. Dual capacitor biphasic defibrillator waveform generator employing selective connection of capacitors for each phase
DE102018003655A1 (en) 2017-04-27 2018-10-31 Weinmann Emergency Medical Technology Gmbh + Co. Kg Method and device for defibrillation
WO2018196899A1 (en) 2017-04-27 2018-11-01 Weinmann Emergency Medical Technology Gmbh + Co. Kg Method and device for defibrillation
US11273315B2 (en) 2017-04-27 2022-03-15 Weinmann Emergency Medical Technology Gmbh + Co. Kg Method and device for defibrillation
DE102018003655B4 (en) 2017-04-27 2022-07-21 Weinmann Emergency Medical Technology Gmbh + Co. Kg Method and device for defibrillation

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