SLEEP DETECTION USING AN ADJUSTABLE THRESHOLD
First Claim
1. A method of detecting sleep, comprising:
- sensing a plurality of sleep-related signals;
storing a relationship that relates sleep detection to the plurality of sleep-related signals, wherein the relationship comprises a dependence between a first one of the plurality of the sleep-related signals and a second one of the plurality of the sleep-related signals;
detecting sleep based on the sensed plurality of sleep-related signals in conjunction with the stored relationship; and
providing an output signal indicative of an outcome of the sleep detection;
wherein at least one of storing, detecting and providing is performed at least in part implantably and effectuated at least in part by a processor.
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Abstract
Devices and methods for sleep detection involve the use of an adjustable threshold for detecting sleep onset and termination. A method for detecting sleep includes adjusting a sleep threshold associated with a first sleep-related signal using a second sleep-related signal. The first sleep-related signal is compared to the adjusted threshold and sleep is detected based on the comparison. The sleep-related signals may be derived from implantable or external sensors. Additional sleep-related signals may be used to confirm the sleep condition. A sleep detector device implementing a sleep detection method may be a component of an implantable pulse generator such as a pacemaker or defibrillator.
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Citations
20 Claims
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1. A method of detecting sleep, comprising:
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sensing a plurality of sleep-related signals; storing a relationship that relates sleep detection to the plurality of sleep-related signals, wherein the relationship comprises a dependence between a first one of the plurality of the sleep-related signals and a second one of the plurality of the sleep-related signals; detecting sleep based on the sensed plurality of sleep-related signals in conjunction with the stored relationship; and providing an output signal indicative of an outcome of the sleep detection; wherein at least one of storing, detecting and providing is performed at least in part implantably and effectuated at least in part by a processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A sleep detection device, comprising:
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sensors configured to sense a plurality of sleep-related signals; and an implantable sleep processor coupled to the sensors, the implantable sleep processor storing a relationship that relates sleep detection to the plurality of sleep-related signals, wherein the relationship comprises a dependence between a first one of the plurality of the sleep-related signals and a second one of the plurality of the sleep-related signals, the implantable sleep processor configured to detect sleep based on the sensed plurality of sleep-related signals in conjunction with the stored relationship, and to provide an output signal indicative of an outcome of the sleep detection. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A sleep detection device, comprising:
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an accelerometer configured to sense a measure related to patient activity; a transthoracic impedance sensor configured to sense a measure related to respiration; a heart rate sensor configured to sense a measure related to heart rate; the measure related to patient activity, the measure related to respiration and the measure related to heart rate comprising sleep-related signals; and an implantable sleep processor coupled to the sensors, the implantable sleep processor storing a relationship that relates sleep detection to at least two of the sleep-related signals, wherein the relationship comprises a dependence between a first one of the sleep-related signals and a second one of the sleep-related signals, the implantable sleep processor configured to detect sleep based on the sensed sleep-related signals in conjunction with the stored relationship, and to provide an output signal indicative of an outcome of the sleep detection. - View Dependent Claims (20)
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Specification