System and method for monitoring autonomic balance and physical activity
First Claim
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1. An implantable device comprising:
- an autonomic tone sensor to provide a tone signal as a function of a sympathetic nervous system and as a function of a parasympathetic nervous system for a predetermined period of time;
an activity sensor to provide an activity signal as a function of physical activity corresponding to the predetermined period; and
an information processing unit connected to the autonomic tone sensor and connected to the activity sensor and adapted to generate an output signal as a function of a relationship between the tone signal and the activity signal.
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Abstract
An implantable device monitors the balance between sympathetic tone and parasympathetic tone as a function of an activity level. Cardio-neurological healthy users exhibit a generally sympathetic tone in conjunction with heavy activity level and a generally parasympathetic tone in conjunction with periods of low activity level. Deviations from expected results are associated with a health problem. Measured conditions are stored and available for subsequent reporting to a remote programmer. Therapy delivered by an implantable device is determined as a function of the relationship between autonomic balance and activity level.
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Citations
29 Claims
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1. An implantable device comprising:
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an autonomic tone sensor to provide a tone signal as a function of a sympathetic nervous system and as a function of a parasympathetic nervous system for a predetermined period of time;
an activity sensor to provide an activity signal as a function of physical activity corresponding to the predetermined period; and
an information processing unit connected to the autonomic tone sensor and connected to the activity sensor and adapted to generate an output signal as a function of a relationship between the tone signal and the activity signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system comprising:
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an autonomic tone sensor to generate a tone signal as a function of a sympathetic nervous system and a parasympathetic nervous system for a period of time;
an activity sensor to generate an activity signal as a function of physical activity during the period of time;
an information processing unit connected to at least one of the autonomic tone sensor and the activity sensor, wherein at least one of the autonomic tone sensor and the activity sensor is adapted for implantation; and
a telemetry circuit connected to the information processing unit and adapted to communicate wirelessly. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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generating an autonomic tone signal as a function of autonomic tone detected during an epoch using an implantable sensor;
obtaining an activity signal as a function of physical activity during the epoch;
identifying a relationship between the tone signal and the activity signal using an implantable processor; and
generating an output signal as a function of the relationship. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification