CA2028207A1 - Implantable-defibrillator pulse detection-triggered ecg monitoring method and apparatus - Google Patents

Implantable-defibrillator pulse detection-triggered ecg monitoring method and apparatus

Info

Publication number
CA2028207A1
CA2028207A1 CA2028207A CA2028207A CA2028207A1 CA 2028207 A1 CA2028207 A1 CA 2028207A1 CA 2028207 A CA2028207 A CA 2028207A CA 2028207 A CA2028207 A CA 2028207A CA 2028207 A1 CA2028207 A1 CA 2028207A1
Authority
CA
Canada
Prior art keywords
ecg data
defibrillation pulse
capture
ecg
detection
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
CA2028207A
Other languages
French (fr)
Other versions
CA2028207C (en
Inventor
Gary N. Mills
Habib Homayoun
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.)
Instromedix Inc
Original Assignee
Instromedix 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 Instromedix Inc filed Critical Instromedix Inc
Publication of CA2028207A1 publication Critical patent/CA2028207A1/en
Application granted granted Critical
Publication of CA2028207C publication Critical patent/CA2028207C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/332—Portable devices specially adapted therefor
    • 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
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/333—Recording apparatus specially adapted therefor
    • A61B5/335—Recording apparatus specially adapted therefor using integrated circuit memory devices
    • 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
    • A61N1/3925—Monitoring; Protecting

Abstract

Ambulatory ECG data monitoring and recording method and apparatus that selectively captures recorded data based upon the occurrence of a defibrillation pulse from an implantable cardio-verter/defibrillator monitor (ICDM) device is described. The apparatus uses a single pair of skin electrodes to sample the ECG
signal waveform and to monitor the voltage therebetween for the detection of a ICDM-produced pulse of characteristic amplitude and duration. ECG data are continuously stored in a scrolling buffer of limited depth. Detection of a defibrillation pulse is treated as a trigger event, prompting the continuation of ECG data storage only for a limited further period of time after which the present ECG data record is captured. The buffered data are marked by the occurrence of the defibrillation pulse that prompted their capture, so that the information stored for subsequent playback indicates the timing relationship therebetween. A new buffer is initialized and ECG data recording and defibrillation pulse detection continues. Selectively capture-stored and marked ECG data can be played back to a remote site for diagnosis of a relatively long-term, ambulatory cardiac patient monitoring and recording session.
Optionally, the cardiac patient may manually trigger the capture-store of ECG data.
CA002028207A 1989-11-09 1990-10-22 Implantable-defibrillator pulse detection-triggered ecg monitoring method and apparatus Expired - Fee Related CA2028207C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/433,753 US5012814A (en) 1989-11-09 1989-11-09 Implantable-defibrillator pulse detection-triggered ECG monitoring method and apparatus
US07/433,753 1989-11-09

Publications (2)

Publication Number Publication Date
CA2028207A1 true CA2028207A1 (en) 1991-05-10
CA2028207C CA2028207C (en) 1995-03-28

Family

ID=23721412

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002028207A Expired - Fee Related CA2028207C (en) 1989-11-09 1990-10-22 Implantable-defibrillator pulse detection-triggered ecg monitoring method and apparatus

Country Status (4)

Country Link
US (1) US5012814A (en)
EP (1) EP0427420A1 (en)
JP (1) JPH03159636A (en)
CA (1) CA2028207C (en)

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Also Published As

Publication number Publication date
EP0427420A1 (en) 1991-05-15
JPH03159636A (en) 1991-07-09
CA2028207C (en) 1995-03-28
US5012814A (en) 1991-05-07

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