Wearable Position Therapy Device With Post-Sleep Haptic Feedback
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Solution Overview
Problem
Conventional systems and methods for influencing sleep position have been largely ineffective, particularly for patients with positional sleep disorders, as they often require pre-sleep initiation and can lead to non-compliance due to discomfort or lack of effectiveness.
Innovation Solution
A wearable position therapy device that monitors and stores physiological signals to assess sleep quality and position, providing haptic feedback to users if they are sleeping in a target position, such as the supine position, to encourage them to change positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional position therapy devices (shirts, vests, belts, pillows) are used to restrict supine sleeping, then the user is mechanically prevented from sleeping in target positions, but user compliance deteriorates due to discomfort and the therapy must be initiated before sleep which disrupts natural sleep onset
Solution Approach 1:
The device waits to initiate therapy until after the user has fallen asleep, rather than requiring pre-sleep initiation. The microcontroller monitors physiological signals to detect sleep onset, then begins position feedback only afterward, allowing natural sleep onset while still providing position control during maintenance sleep
Solution Approach 2:
The device uses haptic feedback (vibration motors) to provide gentle positional guidance after sleep onset, rather than mechanical restriction. The feedback intensity is modulated based on detected position and sleep stage, providing guidance only when needed while maintaining comfort and compliance
2Reliability
If haptic feedback is provided continuously to influence sleep position, then position control effectiveness improves, but energy consumption increases and may disrupt sleep continuity
Solution Approach 1:
The device provides haptic feedback periodically rather than continuously, triggered by detected position changes or apnea events. The feedback is delivered in controlled bursts (e.g., 2-5 seconds) followed by pause periods, reducing overall energy consumption while maintaining position control effectiveness
Solution Approach 2:
The feedback system dynamically adjusts intensity and frequency based on real-time conditions including detected sleep stage, current position, and apnea event severity. Feedback is intensified during REM sleep or severe apnea events when position control is most critical, and reduced during lighter sleep stages
3Measurement precision
If the device monitors physiological signals continuously to assess sleep position and quality, then measurement precision improves, but energy consumption and device complexity increase
Solution Approach 1:
The device segments monitoring into distinct functional modules: position detection (accelerometer), respiratory monitoring (flow sensor), and cardiac monitoring (ECG electrodes). Each module processes its specific signal type independently, reducing overall system complexity while maintaining comprehensive monitoring capability
Solution Approach 2:
Complex signal processing and analysis algorithms are extracted from the wearable device and transferred to external systems (smartphone apps or clinical software). The wearable device performs only basic signal acquisition and preliminary processing, while detailed analysis occurs externally, reducing on-device computational requirements
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 device effectively reduces the time spent in undesirable sleep positions, improving sleep quality and reducing symptoms associated with positional sleep disorders, such as snoring and obstructive sleep apnea, by promoting compliance and comfort.
Implementation Method 1
a haptic feedback device configured to generate tactile feedback to the user of the device
Data Source
AI summary
Systems and methods for assessing compliance with position therapy. In an embodiment, position therapy is provided to a user while the user is wearing a position therapy device. The position therapy comprises, by the device, collecting positional data, determining positions of the user over a time period based on the positional data, and, when it is determined that the user is in a target position, providing feedback to the user to influence the user to change to a non-target position. In addition, the device stores a duration of use in its memory. The duration of use indicates a duration that the user has used the wearable position therapy device in each of one or more positions. An assessment of the user's compliance with the position therapy is then provided based, at least in part, on the duration of use.