Systems and methods for reconstructing heart sounds

A heart sound and cardiac cycle technology, applied in the field of medical systems, can solve problems such as treble

Pending Publication Date: 2021-07-23
CARDIAC PACEMAKERS INC
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  • Abstract
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  • Application Information

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However, pathological S3 or S4 may be higher pitched and louder

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  • Systems and methods for reconstructing heart sounds
  • Systems and methods for reconstructing heart sounds
  • Systems and methods for reconstructing heart sounds

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Embodiment Construction

[0047] Disclosed herein are systems, devices, and methods for reconstructing heart sounds from HS samples acquired under suboptimal conditions, such as at low sampling rates. An exemplary system receives sensed acceleration information from a subject at a first sampling rate and generates an HS ensemble of portions of the acceleration information over a plurality of cardiac cycles. The system can use the HS ensemble to reconstruct the HS segments to have a second sampling rate higher than the first sampling rate. The reconstructed HS segment may comprise the HS signal of the cardiac cycle or a specific HS component (eg, S1 , S2, S3 or S4). HS metrics can be generated from the reconstructed HS segments and used to establish a medical diagnosis, or to detect arrhythmic episodes, WHF events, or other cardiac events.

[0048] figure 1 An example of a patient management system 100 and portions of an environment in which the system 100 may operate is generally shown. Patient mana...

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Abstract

Systems and methods for reconstructing heart sounds from heart sound samples taken under a sub-optimal condition, such as at a low sampling rate, are discussed. An exemplary system receives acceleration information from a patient sensed at a first sampling rate, and generate a heart sound ensemble of portions of acceleration information over multiple cardiac cycles. The system can reconstruct a heart sound segment to have a second sampling rate, higher than the first sampling rate, using the generated heart sound ensemble. A heart sound metric can be generated using the reconstructed heart sound segment, and used for detecting a cardiac event, such as a cardiac arrhythmia episode, or a worsening heart failure event.

Description

[0001] priority claim [0002] This application claims the benefit of priority under 35 U.S.C. §119(e) to U.S. Provisional Patent Application Serial No. 62 / 728,240, filed September 7, 2018, which is hereby incorporated by reference in its entirety. technical field [0003] This document relates generally to medical systems and, more particularly, to systems, devices and methods for sensing heart sounds from a subject. Background technique [0004] Heart sounds are associated with the mechanical vibrations of the heart and the blood flowing through it. Heart sounds repeat with each cardiac cycle and are separated and categorized according to the activity associated with the vibrations. Typically, heart sounds sensed from a subject may include several components within the cardiac cycle, including first (S1), second (S2), third (S3) or fourth (S4) heart sounds. S1 is associated with the vibratory sound made by the heart during stretching of the mitral valve. S2 is produced ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B7/00
CPCA61B7/00A61B5/0031A61B5/0205A61B5/6869A61B5/7203A61B5/7285A61B7/04A61B2562/0219A61N1/36014A61N1/362A61B5/349A61B5/283
Inventor 乔纳森·贝内特·舒特米彬安琪
Owner CARDIAC PACEMAKERS INC
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