Multi-sensor strategy for heart failure patient management
First Claim
1. An apparatus comprising:
- a plurality of sensors, wherein each sensor is configured to provide a separate sensor signal that includes physiological information, and wherein at least one sensor is implantable;
a processor, communicatively coupled to the sensors, wherein the processor includes;
a physiological change event detection module configured to detect a physiological change event from a sensor signal and to produce an indication of occurrence of one or more detected physiological change events; and
a heart failure (HF) detection module configured to;
determine a change in HF status of a subject by applying a first rule HF determination to a plurality of indications from separate sensor signals of whether respective physiological change events occurred, wherein the first rule HF determination includes determining that the detected physiological change events are indicative of the change in HF status when a number of detected physiological change events are a majority of a set of physiological change events that indicate the change in HF status;
determine whether to override the first rule HF determination using a second rule HF determination; and
declare whether the change in HF status occurred according to the first and second rules.
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Accused Products
Abstract
An apparatus comprises plurality of sensors and a processor. Each sensor provides a sensor signal that includes physiological information and at least one sensor is implantable. The processor includes a physiological change event detection module that detects a physiological change event from a sensor signal and produces an indication of occurrence of one or more detected physiological change events, and a heart failure (HF) detection module. The HF detection module determines, using a first rule, whether the detected physiological change event is indicative of a change in HF status of a subject, determines whether to override the first rule HF determination using a second rules, and declares whether the change in HF status occurred according to the first and second rules.
33 Citations
21 Claims
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1. An apparatus comprising:
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a plurality of sensors, wherein each sensor is configured to provide a separate sensor signal that includes physiological information, and wherein at least one sensor is implantable; a processor, communicatively coupled to the sensors, wherein the processor includes; a physiological change event detection module configured to detect a physiological change event from a sensor signal and to produce an indication of occurrence of one or more detected physiological change events; and a heart failure (HF) detection module configured to; determine a change in HF status of a subject by applying a first rule HF determination to a plurality of indications from separate sensor signals of whether respective physiological change events occurred, wherein the first rule HF determination includes determining that the detected physiological change events are indicative of the change in HF status when a number of detected physiological change events are a majority of a set of physiological change events that indicate the change in HF status; determine whether to override the first rule HF determination using a second rule HF determination; and declare whether the change in HF status occurred according to the first and second rules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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sensing a plurality of separate physiologic sensor signals using a plurality of sensors of a medical device, wherein each sensor signal includes physiological information, and wherein at least one sensor is implantable; detecting which physiological change events, if any, of a set of specified physiological change events occurred using the sensor signals; determining a change in heart failure (HF) status of a subject using a first rule HF determination applied to a plurality of indications from separate sensor signals of whether respective physiological change events occurred, wherein the first rule determines that the detected physiological change events are indicative of the change in HF status when a number of detected physiological change events are a majority of a set of physiological change events that indicate the change in HF status and are detectable by the medical device; determining whether to override the first rule HF determination using a second rule HF determination; and declaring whether the change in HF status occurred according to the first and second rules. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification