Wearable Position Therapy Feedback for Sleep Position Compliance

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Solution Overview

Problem

Existing systems for positional therapy to treat sleep disorders, such as obstructive sleep apnea, are ineffective due to non-compliance and disruption of bed partners or users, and lack of initiation after falling asleep.

Innovation Solution

A wearable position therapy device that monitors sleep position using accelerometers or pressure sensors, providing haptic feedback to encourage users to change positions, customizable for different levels of feedback based on user reaction, and capable of storing data for analysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If mechanical position restriction devices (knapsacks, pillows) are used to prevent supine sleeping, then sleep position control is achieved, but user compliance deteriorates due to discomfort and bed partner disturbance

Engineering Contradiction:

Improveuser complianceVSAvoidbed partner disturbance

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent replaces mechanical position restriction devices (knapsacks, pillows, tennis balls) with an electronic system comprising accelerometers, microcontrollers, and haptic feedback motors. This substitution eliminates the physical discomfort and bed partner disturbance caused by mechanical devices while maintaining position control through electronic sensing and tactile feedback.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system continuously monitors sleep position using accelerometers and provides real-time haptic feedback through motors embedded in the wearable device. This closed-loop feedback mechanism gently nudges the user to change position without disturbing the bed partner, improving compliance compared to passive mechanical restrictions.

Inventive Principle:

Principle #23Feedback

2Ease of operation

If position therapy is initiated before falling asleep, then sleep position control is established, but user tolerance deteriorates compared to post-sleep initiation

Engineering Contradiction:

Improveuser toleranceVSAvoidposition control effectiveness

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system performs preliminary actions by monitoring sleep position and initiating haptic feedback only after detecting that the user has fallen asleep (through absence of movement patterns). This timing strategy maintains user tolerance while ensuring position control effectiveness during the critical sleep period.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system employs periodic monitoring of acceleration data to detect sleep onset and transitions. Haptic feedback is applied periodically based on detected position changes during sleep, rather than continuously from the moment the device is worn, thereby improving user tolerance while maintaining reliability.

Inventive Principle:

Principle #19Periodic action

3Reliability

If haptic feedback is provided to change sleep position, then position control is improved, but sleep continuity may deteriorate due to user arousal

Engineering Contradiction:

Improveposition control effectivenessVSAvoidsleep continuity

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The system applies partial action by using gentle haptic feedback at minimal intensity required to prompt position change. The feedback is applied intermittently rather than continuously, and only when position violations are detected, thereby maintaining position control effectiveness while minimizing sleep disruption.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The haptic feedback intensity and frequency are dynamically adjusted based on detected user response. If the user responds quickly to feedback, subsequent feedback intensity is reduced. If no response is detected, feedback intensity increases progressively, optimizing the balance between position control and sleep continuity.

Inventive Principle:

Principle #15Dynamics

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

Enhances compliance and reduces sleep apnea severity by adjusting sleep position without disturbing the user or bed partners, improving sleep quality and reducing snoring.

Implementation Method 1

monitors sleep position using accelerometers or pressure sensors

Methodology Applied

Scientific EffectAccelerometer: Accelerometer

Implementation Method 2

providing haptic feedback to encourage users to change positions

Methodology Applied

Scientific EffectVibration: Vibration

Data Source

PatentUS12350066B2Systems and methods for controlling position

Publication Date: 2025.07.08 ADVANCED BRAIN MONITORING

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.