CA2088384A1 - Defibrillator Waveform Generator for Generating Waveform of Long Duration - Google Patents

Defibrillator Waveform Generator for Generating Waveform of Long Duration

Info

Publication number
CA2088384A1
CA2088384A1 CA2088384A CA2088384A CA2088384A1 CA 2088384 A1 CA2088384 A1 CA 2088384A1 CA 2088384 A CA2088384 A CA 2088384A CA 2088384 A CA2088384 A CA 2088384A CA 2088384 A1 CA2088384 A1 CA 2088384A1
Authority
CA
Canada
Prior art keywords
waveform
defibrillator
long duration
generating
capacitance
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
CA2088384A
Other languages
French (fr)
Other versions
CA2088384C (en
Inventor
David K. Swanson
James P. Nelson
Douglas J. Lang
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.)
Cardiac Pacemakers Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25248605&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2088384(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2088384A1 publication Critical patent/CA2088384A1/en
Application granted granted Critical
Publication of CA2088384C publication Critical patent/CA2088384C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A61N1/3956—Implantable devices for applying electric shocks to the heart, e.g. for cardioversion
    • 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
    • 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

An implantabledefibrillator/cardioverter which generates a biphasic waveform having a duration of at least 15-80 msec and a small "tilt" between the leading edge and trailing edge voltages of each phase. In one embodiment, two capacitors are connected in parallel to create an effectively large capacitance to generate a slowly decaying waveform. In another embodiment, a high capacitance bipolar capacitor is used, which capacitance is at least 200 microFarads.
CA002088384A 1992-01-30 1993-01-29 Defibrillator waveform generator for generating waveform of long duration Expired - Fee Related CA2088384C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82721592A 1992-01-30 1992-01-30
US07/827,215 1992-01-30

Publications (2)

Publication Number Publication Date
CA2088384A1 true CA2088384A1 (en) 1993-07-31
CA2088384C CA2088384C (en) 1998-09-01

Family

ID=25248605

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002088384A Expired - Fee Related CA2088384C (en) 1992-01-30 1993-01-29 Defibrillator waveform generator for generating waveform of long duration

Country Status (7)

Country Link
US (1) US5634938A (en)
EP (1) EP0553864B1 (en)
JP (1) JPH05337204A (en)
AT (1) ATE185980T1 (en)
AU (1) AU3209393A (en)
CA (1) CA2088384C (en)
DE (1) DE69326850T2 (en)

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* Cited by examiner, † Cited by third party
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