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Enhanced auscultatory sensor and analysis for patient diagnosis

  • US 9,521,956 B2
  • Filed: 05/15/2013
  • Issued: 12/20/2016
  • Est. Priority Date: 06/05/2012
  • Status: Active Grant
First Claim
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1. A system comprising:

  • an acoustic sensor configured to detect an acoustic signal from a heart of a patient;

    a sensing module configured to detect an electrical signal from the heart of the patient via two or more electrodes; and

    at least one processor configured to;

    for each cardiac cycle of a plurality of cardiac cycles, identify a trigger point associated with the detected electrical signal, wherein the trigger point is associated with an R-wave of each cardiac cycle of the detected electrical signal;

    generate acoustic information from the detected acoustic signal;

    synchronize the acoustic information to the trigger point for each cardiac cycle;

    generate a phonocardiogram as a composite phonocardiogram based on the synchronized acoustic information, wherein the composite phonocardiogram is generated for a representative cardiac cycle;

    determine R-wave amplitudes from each of the plurality of cardiac cycles;

    determine a plurality of different breathing phases within a single breathing cycle;

    for each cardiac cycle, sort the synchronized acoustic information into one of the different breathing phases; and

    generate a breathing phase composite phonocardiogram for each of the different breathing phases by averaging the synchronized acoustic information in each of the respective breathing phases.

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