Systems and methods for multi-axis cardiac vibration measurements
First Claim
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1. A system comprising:
- a medical device including;
at least one implantable multi-axis heart sound sensor, configured to produce a first electrical signal and a second electrical signal representative of respective components for respective first and second non-parallel axes of at least one heart sound, the heart sound associated with mechanical activity of a patient'"'"'s heart; and
a controller circuit, coupled to the heart sound sensor, the controller circuit configured to;
measure components of the heart sound that respectively correspond to each of the axes;
use the components to produce a heart sound vector representative of the heart sound, wherein the heart sound vector includes heart sound magnitude and heart sound directional information; and
use the heart sound directional information to provide a physiological diagnostic indication.
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Abstract
A system to monitor heart sounds, such as to detect a worsening condition of heart failure decompensation. The system comprises a medical device that includes an implantable multi-axis heart sound sensor, operable to produce, for each of at least two nonparallel axes, an electrical signal representative of at least one heart sound, the heart sound associated with mechanical activity of a patient'"'"'s heart. The device further includes a controller circuit coupled to the heart sound sensor. The controller circuit measures components of the heart sound that respectively correspond to each of the axes.
199 Citations
33 Claims
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1. A system comprising:
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a medical device including; at least one implantable multi-axis heart sound sensor, configured to produce a first electrical signal and a second electrical signal representative of respective components for respective first and second non-parallel axes of at least one heart sound, the heart sound associated with mechanical activity of a patient'"'"'s heart; and a controller circuit, coupled to the heart sound sensor, the controller circuit configured to; measure components of the heart sound that respectively correspond to each of the axes; use the components to produce a heart sound vector representative of the heart sound, wherein the heart sound vector includes heart sound magnitude and heart sound directional information; and use the heart sound directional information to provide a physiological diagnostic indication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method comprising:
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sensing at least one heart sound, which is representative of mechanical activity of a patient'"'"'s heart, along first and second nonparallel axes, the sensing including using an implantable medical device and producing a first electrical signal and a second electrical signal representative of respective components for the respective first and second non-parallel axes; measuring components of the heart sound that respectively correspond to each of the axes; using the components to produce a vector representative of the heart sound, wherein the heart sound vector includes heart sound magnitude and heart sound directional information; and using the heart sound directional information to provide a physiological diagnostic indication. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification