Threshold Electrocutaneous Stimulation for Slow Wave Sleep
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Solution Overview
Problem
Current methods for improving slow wave sleep stage are inadequate in preventing sub-awakening and prolonging its duration, which is crucial for sleep quality and recuperation.
Innovation Solution
A threshold electrocutaneous stimulation apparatus that detects slow wave sleep stages and applies gentle, subthreshold electrocutaneous stimulation using an electrode system connected to a processor and electric pulse generator, adjusting the stimulation schedule to prevent sub-awakening and prolong the slow wave sleep stage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If electrical stimulation is applied to treat sleep disorders, then sleep management is improved, but the ability to specifically prolong slow wave sleep stage is insufficient
Solution Approach 1:
The system detects slow wave sleep stage onset in advance and applies electrical stimulation proactively to prevent sub-awakening before it occurs. The stimulation is initiated when the system predicts sub-awakening may happen, rather than waiting for the awakening to occur, thereby extending the slow wave sleep duration effectively.
Solution Approach 2:
The system continuously monitors sleep stage signals and adjusts electrical stimulation delivery based on real-time detection of sub-awakening events. When sub-awakening is detected, the system modifies stimulation parameters to counteract the awakening tendency, creating a closed-loop control system that reliably maintains slow wave sleep.
2Reliability
If electrical stimulation therapy is delivered to inhibit movement during REM sleep, then REM behavior disorder is managed, but the slow wave sleep stage is not specifically enhanced
Solution Approach 1:
The system applies different stimulation strategies for different sleep stages. During REM sleep, stimulation parameters are configured to inhibit movement for RBD management. During slow wave sleep stage, the system switches to a different stimulation mode specifically designed to prevent sub-awakening and prolong the deep sleep stage, thereby addressing both needs with stage-specific protocols.
Solution Approach 2:
The system dynamically adjusts stimulation parameters based on the detected sleep stage. When transitioning from REM to slow wave sleep, the system modifies its output characteristics to match the therapeutic goals of each stage, enabling both RBD management and slow wave sleep enhancement without compromising either function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively prolongs slow wave sleep by preventing sub-awakening, thereby enhancing sleep quality and recuperation by maintaining the patient in the deep sleep stage.
Implementation Method 1
a measuring unit (MU) 12 includes an electrode system of eight skin electrodes (16) that are used to register the electrodermal activity (EDA) signal
Implementation Method 2
employing gentle, subthreshold electrocutaneous stimulation
Data Source
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AI summary
A method and apparatus is disclosed for slow wave sleep improvement. The method includes recording a biosignal from a skin area of a patient using an electrode system. The slow wave stage of NREM sleep is detected by analyzing an oscillation rate of the biosignal. If the slow wave stage is detected, threshold electrocutaneous stimulation is applied to improve the quality of sleep. The described embodiment relates to an apparatus for slow wave sleep improvement comprising an electrode system, a measuring unit, a therapy unit and a processor. The processor is coupled to the measurement unit for receiving the biosignal corresponding to the electrodermal activity. The processor proceses the biosignal to determine the slow wave sleep stage and activates the therapy unit to deliver threshold electrocuteneous therapy to the patient with the purpose of improving the slow wave sleep stage.