Closed loop neuromodulator
This document discusses, among other things, a system and method for optimizing a sleep therapy using a closed loop neuromodulator. A first sleep disorder event can be detected using first activity information, and a first stimulus can be provided, in response to the first sleep disorder event, using a set of stimulus parameters. Termination of the first sleep disorder event can be detected using second activity information, and at least one therapy parameter can be adjusted to decrease an energy level of a subsequent stimulus.
1 . A system for optimizing a sleep therapy for a patient using a reduced stimulus energy in response to a terminated sleep disorder event, the system comprising:
a sensor configured to detect activity information from the patient;
a closed loop neuromodulator configured to receive first activity information from the sensor, to detect a first sleep disorder event using the first activity information, and to provide, in response to the first sleep disorder event, a first stimulus using a set of stimulus parameters;
wherein the closed loop neuromodulator is configured to receive second activity information from the sensor after providing the first stimulus, and to detect, using the second activity information, termination of the first sleep disorder event in response to the first stimulus; and
wherein the closed loop neuromodulator is configured to receive third activity information from the sensor, to detect a second sleep disorder event using the third activity information, and to provide, in response to the second sleep disorder event, a second stimulus using an adjusted set of stimulus parameters;
wherein the second stimulus is configured to provide less energy to the patient than the first stimulus; and
a transducer configured to deliver the first stimulus to the patient to interrupt the detected first sleep disorder event.
2 . The system of claim 1 , wherein the set of stimulus parameters include at least one of a stimulus level, a stimulus type, a stimulus rate, a stimulus frequency, or a stimulus duration.
3 . The system of claim 2 , wherein the closed loop neuromodulator is configured to adjust the stimulus type, in response to the termination of the first sleep disorder event using the second information, to provide less energy to the patient than the first stimulus.
4 . The system of claim 2 , wherein the closed loop neuromodulator is configured to adjust the stimulus level, in response to the termination of the first sleep disorder event using the second information, to provide less energy to the patient than the first stimulus.
5 . The system of claim 2 , wherein the closed loop neuromodulator is configured to adjust the stimulus rate, in response to the termination of the first sleep disorder event using the second information, to provide less energy to the patient than the first stimulus.
6 . The system of claim 2 , wherein the closed loop neuromodulator is configured to adjust the stimulus duration, in response to the termination of the first sleep disorder event using the second information, to provide less energy to the patient than the first stimulus.
7 . The system of claim 2 , wherein the closed loop neuromodulator is configured to adjust the stimulus frequency, in response to the termination of the first sleep disorder event using the second information, to provide less energy to the patient than the first stimulus.
8 . The system of claim 2 , wherein the closed loop neuromodulator is configured to adjust the set of stimulus parameters using one or more stimulus parameters from previous sleep disorder events.
9 . The system of claim 1 , wherein the closed loop neuromodulator is configured to receive information about the set of stimulus parameters from a user.
10 . The system of claim 1 , wherein the first sleep disorder event includes an apnea event.
11 . The system of claim 1 , wherein the sensor includes at least one of a thermocouple, a thermistor, an air pressure transducer, an electrode, a respiratory effort belt, or a pyro/piezoelectric sensor.
12 . The system of claim 1 , wherein the transducer includes at least one of an acoustic transducer, a tactile mechanical agitator, an ocular stimulator, an electrical stimulator, a thermal stimulator, or an ultrasonic stimulator configured to modulate an audible signal onto an ultrasonic sound carrier.
13 . A method for optimizing a sleep therapy using a closed loop neuromodulator, the method comprising:
receiving first activity information;
detecting a first sleep disorder event using the first activity information;
providing, in response to the first sleep disorder event, a first stimulus using a set of stimulus parameters;
receiving second activity information after providing the first stimulus;
detecting termination of the first sleep disorder event using the second activity information; and
adjusting at least one parameter of the set of parameters to decrease an energy level of a subsequent stimulus.
14 . The method of claim 13 , wherein adjusting at least one parameter includes adjusting a stimulus type parameter to decrease an energy level of a subsequent stimulus.
15 . The method of claim 13 , wherein adjusting at least one parameter includes adjusting a stimulus level parameter to decrease an energy level of a subsequent stimulus.
16 . The method of claim 13 , wherein adjusting at least one parameter includes adjusting a stimulus rate parameter to decrease an energy level of a subsequent stimulus.
17 . The method of claim 13 , wherein adjusting at least one parameter includes adjusting a stimulus duration parameter to decrease an energy level of a subsequent stimulus.
18 . The method of claim 13 , wherein adjusting at least one parameter includes adjusting a stimulus frequency parameter to decrease an energy level of a subsequent stimulus.
19 . The method of claim 13 , wherein receiving first activity information includes receiving respiratory information; and
detecting a first sleep disorder event includes detecting abnormal respiration using the respiratory information.
20 . The method of claim 13 , wherein detecting a first sleep disorder event includes detecting a sleep apnea event.