Method and apparatus for cardiac function monitoring
First Claim
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1. A medical device, comprising:
- an elongated lead body having an outer surface and a first opening along the outer surface;
a first sensor positioned along the lead body and configured to receive first acoustic signals through the first opening of the lead body and generate an electrical signal representative of sounds produced at a first targeted location along a patient'"'"'s cardiovascular system;
a second sensor configured to receive second acoustic signals through a second opening of the lead body and generate an electrical signal representative of sounds produced at a second targeted location along a patient'"'"'s cardiovascular system different than the first targeted location;
a plurality of electrodes carried by the elongated lead body;
a therapy delivery module configured to be coupled to the plurality of electrodes; and
a processor configured to;
detect a change in an intensity of the first acoustic signals,monitor the second acoustic signals in response to detecting the change in intensity of the first acoustic signals;
determine changes in blood pressure in response to the change in intensity of the first acoustic signals and the monitored second acoustic signals, andcontrol the therapy delivery module in response to determining a change in blood pressure.
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Abstract
An implantable medical device that includes an elongated lead body having an outer surface and a first opening along the outer surface, a first sensor positioned along the lead body and configured to receive first acoustic signals through the first opening of the lead body and generate an electrical signal representative of sounds produced at a first targeted location along a patient'"'"'s cardiovascular system, and a processor configured to determine an intensity of the first acoustic signals, and determine changes in blood pressure in response to the determined intensity.
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Citations
21 Claims
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1. A medical device, comprising:
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an elongated lead body having an outer surface and a first opening along the outer surface; a first sensor positioned along the lead body and configured to receive first acoustic signals through the first opening of the lead body and generate an electrical signal representative of sounds produced at a first targeted location along a patient'"'"'s cardiovascular system; a second sensor configured to receive second acoustic signals through a second opening of the lead body and generate an electrical signal representative of sounds produced at a second targeted location along a patient'"'"'s cardiovascular system different than the first targeted location; a plurality of electrodes carried by the elongated lead body; a therapy delivery module configured to be coupled to the plurality of electrodes; and a processor configured to; detect a change in an intensity of the first acoustic signals, monitor the second acoustic signals in response to detecting the change in intensity of the first acoustic signals; determine changes in blood pressure in response to the change in intensity of the first acoustic signals and the monitored second acoustic signals, and control the therapy delivery module in response to determining a change in blood pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for determining a cardiac condition in a medical device, comprising:
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sensing first acoustic signals produced at a first targeted location along a patient'"'"'s cardiovascular system via a first sensor positioned along an elongated lead body, the lead body comprising an outer surface and a first opening along the outer surface for receiving the first acoustic signals by the first sensor from the first targeted location; sensing second acoustic signals produced at a second targeted location along the patient'"'"'s cardiovascular system different than the first targeted location via a second sensor positioned along the elongated lead body, the lead body comprising a second opening along the outer surface for receiving the second acoustic signals by the second sensor from the second targeted location; detecting by a processor of the medical device a change in an intensity of the first acoustic signals; monitoring the second acoustic signals in response to the detected change in intensity of the first acoustic signals; determining changes in blood pressure in response to the intensity of the first acoustic signals and the monitored second acoustic signals; and controlling a therapy delivery module in response to determining a change in blood pressure. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A non-transitory computer readable medium having computer executable instructions for performing a method, the method comprising:
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sensing first acoustic signals produced at a first targeted location along a patient'"'"'s cardiovascular system via a first sensor positioned along an elongated lead body, the lead body comprising an outer surface and a first opening along the outer surface for receiving the first acoustic signals by the first sensor from the first targeted location; sensing second acoustic signals produced at a second targeted location along the patient'"'"'s cardiovascular system different than the first targeted location via a second sensor positioned along the elongated lead body, the lead body comprising a second opening along the outer surface for receiving the second acoustic signals by the second sensor from the second targeted location; determining a change in an intensity of the first acoustic signals; monitoring the second acoustic signals in response to detecting the change in the intensity of the first acoustic signals; determining changes in blood pressure in response to the intensity of the first acoustic signals and the monitored second acoustic signals; and controlling a therapy delivery module in response to determining a change in blood pressure.
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Specification