Heart failure management system
First Claim
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1. A system, comprising:
- a stimulator adapted to deliver a stimulation signal for a heart failure therapy;
a number of sensors adapted to sense at least a first parameter used to provide at least a first measurement of a heart failure status and sense at least a second parameter used to provide a second measurement of the heart failure status; and
a controller connected to the stimulator and to the number of sensors, the controller being adapted to use the first and second measurements of the heart failure status to create a heart failure status index, and control the stimulator to modulate the stimulation signal for the heart failure therapy using the index, wherein the controller is configured to;
use a dual feedback response to account for both long-term heart failure status changes and short-term heart failure status changes;
provide a short-term index indicative of a short-term heart failure status to account for short-term heart failure status changes, wherein in providing the short-term index the controller is configured to use at least two measurements including the first measurement of the heart failure status;
provide a long-term index indicative of a long-term heart failure status to account for long-term heart failure status changes, wherein providing the long-term index the controller is configured to use at least two measurements including the second measurement of the heart failure status to provide a long-term index indicative of a long-term heart failure status;
control the stimulator to modulate the stimulation signal for the heart failure therapy using the short-term index and control the stimulator to modulate the stimulation signal for the heart failure therapy using the long-term index.
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Abstract
Various system embodiments comprise a stimulator adapted to deliver a stimulation signal for a heart failure therapy, a number of sensors adapted to provide at least a first measurement of a heart failure status and a second measurement of the heart failure status, and a controller. The controller is connected to the stimulator and to the number of sensors. The controller is adapted to use the first and second measurements to create a heart failure status index, and control the stimulator to modulate the signal using the index. Other aspects and embodiments are provided herein.
71 Citations
24 Claims
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1. A system, comprising:
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a stimulator adapted to deliver a stimulation signal for a heart failure therapy; a number of sensors adapted to sense at least a first parameter used to provide at least a first measurement of a heart failure status and sense at least a second parameter used to provide a second measurement of the heart failure status; and a controller connected to the stimulator and to the number of sensors, the controller being adapted to use the first and second measurements of the heart failure status to create a heart failure status index, and control the stimulator to modulate the stimulation signal for the heart failure therapy using the index, wherein the controller is configured to; use a dual feedback response to account for both long-term heart failure status changes and short-term heart failure status changes; provide a short-term index indicative of a short-term heart failure status to account for short-term heart failure status changes, wherein in providing the short-term index the controller is configured to use at least two measurements including the first measurement of the heart failure status; provide a long-term index indicative of a long-term heart failure status to account for long-term heart failure status changes, wherein providing the long-term index the controller is configured to use at least two measurements including the second measurement of the heart failure status to provide a long-term index indicative of a long-term heart failure status; control the stimulator to modulate the stimulation signal for the heart failure therapy using the short-term index and control the stimulator to modulate the stimulation signal for the heart failure therapy using the long-term index. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system, comprising:
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means for sensing at least a first parameter to obtain a first measurement of a heart failure status and sensing at least a second parameter to obtain a second measurement of the heart failure status; means for creating a heart failure index using the first measurement of the heart failure status and the second measurement of the heart failure status; and means for adjusting a heart failure therapy using the heart failure index as an indicator of the heart failure status, wherein the means for adjusting includes a controller configured to; use a dual feedback response to account for both long-term heart failure status changes and short-term heart failure status changes; provide a short-term index indicative of a short-term heart failure status to account for short-term heart failure status changes, wherein in providing the short-term index the controller is configured to use at least two measurements including the first measurement of the heart failure status; provide a long-term index indicative of a long-term heart failure status to account for long-term heart failure status changes, wherein in providing the long-term index the controller is configured to use at least two measurements including the second measurement of the heart failure status; and adjust the heart failure therapy using the short-term index and adjust the heart failure therapy using the long-term index. - View Dependent Claims (21, 22, 23, 24)
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Specification