Published Patent: Bayesian discriminator for rapidly detecting arrhythmias

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Patent History
  • Application
    US 10/141104
    2002-05-07
  • Publication
    US 20030216654
    2003-11-20
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TitleBayesian discriminator for rapidly detecting arrhythmias
Priority Date2002-05-07 US 10/141104
InventorsXu, W.C.
Tse, HF
Chan, FHY
Fung, PCW
Lau, CP
Issue Date2003
CitationUS Published patent application US 20030216654. Washington, DC: US Patent and Trademark Office (USPTO), 2003 [How to Cite?]
AbstractA method for accurate and rapid automated detection of atrial fibrillation (AF), sinus rhythm (SF), and atrial flutter (AFL) is disclosed, which allows distinguishing of these cardiac signals with lowered risk of errors by implanted pacemakers and like devices. The method includes training episodes of intra-cardiac signals (called the closed data set CDS) to evaluate five feature parameters with a discriminator classifying the signal into AF, AFL or sinus rhythm (SR). Comparison with the independent decisions of experienced physicians for each episode reveals specificity, accuracy and sensitivity of greater than 97%. Each episode is a window of intracardiac signal of interval 1-2 seconds with the discriminator providing results in less than 0.25 s. In another aspect, the method is resistant to the presence of noise in the data. In yet another aspect, more feature parameters may be used in alternative implementations including for detecting signals other than AF, AFL & SR.
DC Field
Value
dc.contributor.inventorXu, W.C.
dc.contributor.inventorTse, HF
dc.contributor.inventorChan, FHY
dc.contributor.inventorFung, PCW
dc.contributor.inventorLau, CP
dc.date.accessioned2010-09-26T04:15:18Z
patents.date.application2002-05-07
dc.date.available2010-09-26T04:15:18Z
dc.date.issued2003
patents.date.priority2002-05-07 US 10/141104
patents.date.publication2003-11-20
dc.description.abstractA method for accurate and rapid automated detection of atrial fibrillation (AF), sinus rhythm (SF), and atrial flutter (AFL) is disclosed, which allows distinguishing of these cardiac signals with lowered risk of errors by implanted pacemakers and like devices. The method includes training episodes of intra-cardiac signals (called the closed data set CDS) to evaluate five feature parameters with a discriminator classifying the signal into AF, AFL or sinus rhythm (SR). Comparison with the independent decisions of experienced physicians for each episode reveals specificity, accuracy and sensitivity of greater than 97%. Each episode is a window of intracardiac signal of interval 1-2 seconds with the discriminator providing results in less than 0.25 s. In another aspect, the method is resistant to the presence of noise in the data. In yet another aspect, more feature parameters may be used in alternative implementations including for detecting signals other than AF, AFL & SR.
patents.description.assigneeXU WEICHAO, ; TSE HUNG-FAT, ; CHAN FRANCIS HY, ; FUNG PETER CHIN WAN, ; LAU CHU-PAK
patents.description.ccUS
patents.description.countryUnited States of America
patents.description.kindA1
patents.identifier.applicationUS 10/141104
dc.identifier.citationUS Published patent application US 20030216654. Washington, DC: US Patent and Trademark Office (USPTO), 2003 [How to Cite?]
dc.identifier.hkuros95069
patents.identifier.publicationUS 20030216654
dc.identifier.urihttp://hdl.handle.net/10722/113428
dc.languageeng
patents.relation.familyAU 2003267503 (A1) 2003-11-11
patents.relation.familyWO 03094721 (A1) 2003-11-20
dc.relation.isreferencedbyWO 2011126823 (A1) 2011-10-13
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dc.relation.isreferencedbyUS 2005060008 (A1) 2005-03-17
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documents
dc.titleBayesian discriminator for rapidly detecting arrhythmias
dc.typePatent
patents.typePatent_published