External defibrillator

Cesar Navarro-Paredes (Inventor), John Anderson (Inventor)

Research output: Patent

Abstract

An external defibrillator includes patient electrodes (20) for obtaining the patient's electrocardiogram (ECG) and for applying a shock to the patient. A microprocessor (24) analyses the patient's ECU using a diagnostic algorithm to detect if the patient's heart is in a shockable rhythm, and shock delivery circuitry (10) is enabled when a shockable rhythm is detected by the diagnostic algorithm. The patient electrodes also allow obtaining a signal (Z) which is a measure of the patient's transthoracic impedance and the microprocessor is responsive to Z to detect conditions likely to cause the diagnostic algorithm to generate a false detection of a shockable rhythm. If such detection is made, the microprocessor prevents detection of a shockable rhythm by the diagnostic algorithm, at least for a period of time.
LanguageEnglish
Patent numberUS9238146 B2
Publication statusPublished - 19 Jan 2016

Fingerprint

Defibrillators
Microcomputers
Shock
Electrodes
Impedance Cardiography
Electrocardiography

Keywords

  • External automated defibrillator
  • Fibrillation
  • Cardiac Arrest
  • ECG
  • ICG
  • Impedance
  • noise detection

Cite this

Navarro-Paredes, C., & Anderson, J. (2016). External defibrillator. (Patent No. US9238146 B2).
Navarro-Paredes, Cesar (Inventor) ; Anderson, John (Inventor). / External defibrillator. Patent No.: US9238146 B2.
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title = "External defibrillator",
abstract = "An external defibrillator includes patient electrodes (20) for obtaining the patient's electrocardiogram (ECG) and for applying a shock to the patient. A microprocessor (24) analyses the patient's ECU using a diagnostic algorithm to detect if the patient's heart is in a shockable rhythm, and shock delivery circuitry (10) is enabled when a shockable rhythm is detected by the diagnostic algorithm. The patient electrodes also allow obtaining a signal (Z) which is a measure of the patient's transthoracic impedance and the microprocessor is responsive to Z to detect conditions likely to cause the diagnostic algorithm to generate a false detection of a shockable rhythm. If such detection is made, the microprocessor prevents detection of a shockable rhythm by the diagnostic algorithm, at least for a period of time.",
keywords = "External automated defibrillator, Fibrillation, Cardiac Arrest, ECG, ICG, Impedance, noise detection",
author = "Cesar Navarro-Paredes and John Anderson",
note = "Country: US Patent Application Date: 2014-12-05; US9238146 B2",
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Navarro-Paredes, C & Anderson, J 2016, External defibrillator, Patent No. US9238146 B2.

External defibrillator. / Navarro-Paredes, Cesar (Inventor); Anderson, John (Inventor).

Patent No.: US9238146 B2.

Research output: Patent

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AU - Navarro-Paredes, Cesar

AU - Anderson, John

N1 - Country: US Patent Application Date: 2014-12-05

PY - 2016/1/19

Y1 - 2016/1/19

N2 - An external defibrillator includes patient electrodes (20) for obtaining the patient's electrocardiogram (ECG) and for applying a shock to the patient. A microprocessor (24) analyses the patient's ECU using a diagnostic algorithm to detect if the patient's heart is in a shockable rhythm, and shock delivery circuitry (10) is enabled when a shockable rhythm is detected by the diagnostic algorithm. The patient electrodes also allow obtaining a signal (Z) which is a measure of the patient's transthoracic impedance and the microprocessor is responsive to Z to detect conditions likely to cause the diagnostic algorithm to generate a false detection of a shockable rhythm. If such detection is made, the microprocessor prevents detection of a shockable rhythm by the diagnostic algorithm, at least for a period of time.

AB - An external defibrillator includes patient electrodes (20) for obtaining the patient's electrocardiogram (ECG) and for applying a shock to the patient. A microprocessor (24) analyses the patient's ECU using a diagnostic algorithm to detect if the patient's heart is in a shockable rhythm, and shock delivery circuitry (10) is enabled when a shockable rhythm is detected by the diagnostic algorithm. The patient electrodes also allow obtaining a signal (Z) which is a measure of the patient's transthoracic impedance and the microprocessor is responsive to Z to detect conditions likely to cause the diagnostic algorithm to generate a false detection of a shockable rhythm. If such detection is made, the microprocessor prevents detection of a shockable rhythm by the diagnostic algorithm, at least for a period of time.

KW - External automated defibrillator

KW - Fibrillation

KW - Cardiac Arrest

KW - ECG

KW - ICG

KW - Impedance

KW - noise detection

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Navarro-Paredes C, Anderson J, inventors. External defibrillator. US9238146 B2. 2016 Jan 19.