MONITORING OF HEART SOUNDS
First Claim
1. A system comprising:
- an implantable heart sound sensor circuit configured to produce an electrical heart sound signal representative of a heart sound of a subject;
a processor circuit coupled to the heart sound sensor circuit, wherein the processor circuit includes;
a detection circuit configured to detect a physiologic perturbation;
a heart sound feature circuit configured to identify a heart sound feature in the electrical signal, and wherein the processor circuit is configured to trigger the heart sound feature circuit in relation to a detected physiologic perturbation; and
a trending circuit configured to trend the heart sound feature in relation to a recurrence of the physiologic perturbation, andwherein the processor circuit is configured to declare and provide to a user or process a change in a physiologic condition of the patient according to the trend.
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Accused Products
Abstract
This document discusses, among other things, a system comprising an implantable medical device (IMD) including an implantable heart sound sensor circuit configured to produce an electrical heart sound signal representative of a heart sound of a subject and a processor circuit. The processor circuit is coupled to the heart sound sensor circuit and includes a detection circuit, a heart sound feature circuit and a trending circuit. The detection circuit configured to detect a physiologic perturbation and the heart sound feature circuit is configured to identify a heart sound feature in the electrical signal. The processor circuit is configured to trigger the heart sound feature circuit in relation to a detected physiologic perturbation. The trending circuit is configured to trend the heart sound feature in relation to a recurrence of the physiologic perturbation. The processor circuit is configured to declare a change in a physiologic condition of the patient according to the trending.
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Citations
31 Claims
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1. A system comprising:
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an implantable heart sound sensor circuit configured to produce an electrical heart sound signal representative of a heart sound of a subject; a processor circuit coupled to the heart sound sensor circuit, wherein the processor circuit includes; a detection circuit configured to detect a physiologic perturbation; a heart sound feature circuit configured to identify a heart sound feature in the electrical signal, and wherein the processor circuit is configured to trigger the heart sound feature circuit in relation to a detected physiologic perturbation; and a trending circuit configured to trend the heart sound feature in relation to a recurrence of the physiologic perturbation, and wherein the processor circuit is configured to declare and provide to a user or process a change in a physiologic condition of the patient according to the trend. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method comprising:
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implantably sensing an electrical heart sound signal representative of a heart sound of a subject; identifying a feature of the heart sound signal in relation to a detected physiologic perturbation; trending the feature of the heart sound signal in relation to a recurrence of the physiologic perturbation; and identifying a change in a physiologic condition of the subject from the trending. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A system comprising:
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means for implantably sensing an electrical heart sound signal representative of a heart sound of a subject; means for identifying a feature of the heart sound signal in relation to a detected physiologic perturbation; means for trending the feature of the heart sound signal in relation to a recurrence of the physiologic perturbation; and means for identifying a change in a physiologic condition of the subject from the trending.
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29. A system comprising:
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an implantable medical device (IMD) including; an implantable heart sound sensor circuit configured to produce an electrical heart sound signal representative of a heart sound of a subject; a first processor circuit coupled to the heart sound sensor circuit, wherein the processor circuit includes; a detection circuit configured to detect a physiologic perturbation; and a heart sound feature circuit configured to identify a heart sound feature in the electrical signal, and wherein the processor circuit is configured to trigger the heart sound feature circuit in relation to a detected physiologic perturbation; and an external device including; a second processor circuit including a trending circuit configured to trend the heart sound feature in relation to a recurrence of the physiologic perturbation, wherein the second processor circuit is configured to declare a change in a physiologic condition of the patient according to the trending. - View Dependent Claims (30, 31)
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Specification