Method for correction of posture dependence on heart sounds
First Claim
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1. A system comprising:
- a device comprising;
an implantable heart sound sensor operable to produce an electrical signal representative of at least one heart sound, the heart sound associated with mechanical activity of a patient'"'"'s heart;
a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal;
an implantable posture sensor operable to produce an electrical signal representative of a patient'"'"'s posture;
a memory circuit; and
a controller circuit, coupled to the heart sound sensor interface circuit and the posture circuit, wherein the controller circuit is configured to;
determine a patient posture using the posture sensor signal;
measure the at least one heart sound in correspondence with at least one corresponding determined patient posture;
adjust the heart sound measurement by using the corresponding determined patient posture to reduce or remove variation in the heart sound measurement due to patient posture; and
provide the adjusted heart sound measurement to a user or an automated process.
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Abstract
A system to monitor heart sounds. The system comprises an implantable heart sound sensor operable to produce an electrical signal representative of at least one heart sound, a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal, an implantable posture sensor operable to produce an electrical signal representative of a patient'"'"'s posture, and a controller circuit, coupled to the heart sound sensor interface circuit and the posture circuit. The controller circuit is operable to measure at least one heart sound in correspondence with at least one sensed patient posture.
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Citations
32 Claims
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1. A system comprising:
a device comprising; an implantable heart sound sensor operable to produce an electrical signal representative of at least one heart sound, the heart sound associated with mechanical activity of a patient'"'"'s heart; a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal; an implantable posture sensor operable to produce an electrical signal representative of a patient'"'"'s posture; a memory circuit; and a controller circuit, coupled to the heart sound sensor interface circuit and the posture circuit, wherein the controller circuit is configured to; determine a patient posture using the posture sensor signal; measure the at least one heart sound in correspondence with at least one corresponding determined patient posture; adjust the heart sound measurement by using the corresponding determined patient posture to reduce or remove variation in the heart sound measurement due to patient posture; and provide the adjusted heart sound measurement to a user or an automated process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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sensing at least one heart sound using an implantable medical device; determining posture of a patient using the implantable medical device; measuring the heart sound in correspondence with at least one corresponding determined patient posture; storing the heart sound measurement in conjunction with or according to the determined patient posture; adjusting the heart sound measurement by using the corresponding determined patient posture for reducing or removing variation in the heart sound measurement due to patient posture; and providing the adjusted heart sound measurement to a user or an automated process. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A system comprising:
an implantable medical device, the implantable medical device comprising; a communication circuit; a heart sound sensor operable to produce an electrical signal representative of a heart sound; a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal; a posture sensor operable to produce an electrical signal representative of a patient'"'"'s posture; and a controller circuit, coupled to the heart sound sensor interface circuit and the posture circuit, wherein the controller circuit is configured to; determine a patient posture using the posture sensor signal; measure heart sounds in correspondence with corresponding determined patient postures; and categorize or store a heart sound measurement according to determined patient posture; and adjust the heart sound measurement by using the corresponding determined patient posture to reduce or remove variation in the heart sound measurement due to patient posture. - View Dependent Claims (28, 29, 30, 31, 32)
Specification