Oscillatory PEP Device With Camera-Based Compliance Tracking
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Solution Overview
Problem
Existing respiratory therapy apparatuses face challenges in maintaining regular use by patients, especially at home, due to the difficulty in tracking compliance, which affects the effectiveness of treatment for chronic respiratory conditions.
Innovation Solution
Incorporating an electronic camera externally to monitor the displacement of a displaceable member within the device, marked with contrasting colors or reflective surfaces, to provide real-time feedback on usage frequency and duration, combined with a transparent housing or window for optimal sensitivity, and optionally integrating a microphone for improved signal-to-noise ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If acoustic sensors such as microphones are used to detect breath, then the device can monitor usage, but the signal-to-noise ratio is insufficient and detection accuracy is reduced
Solution Approach 1:
The patent introduces an optical intermediary system consisting of a light source and photodetector that mediates the detection of breath-induced diaphragm displacement. This optical intermediary converts mechanical displacement into optical signal changes, avoiding the noise problems of acoustic sensors while maintaining high detection accuracy.
Solution Approach 2:
The patent replaces the acoustic detection system (microphone-based) with an optical detection system (light source and photodetector). This substitution eliminates the limitations of acoustic sensors regarding signal-to-noise ratio and detection accuracy, as the optical system directly measures diaphragm position without being affected by ambient noise.
2Reliability
If compliance monitoring is implemented to track patient usage, then treatment effectiveness can be improved, but the device complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the optical sensor continuously monitors diaphragm displacement and provides real-time compliance data. This feedback enables automatic tracking of usage patterns, duration, and intensity, ensuring treatment effectiveness without requiring complex manual monitoring systems.
Solution Approach 2:
The device performs self-monitoring through the integrated optical sensor that automatically detects and records compliance information during normal operation. The system serves itself by extracting compliance data from the inherent operational signals, eliminating the need for separate monitoring apparatus or user intervention.
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 patient compliance by providing real-time feedback on usage, allowing clinicians to monitor adherence and adjust treatment plans accordingly, ensuring effective therapy delivery.
Implementation Method 1
the apparatus includes an electronic camera responsive to displacement of the displaceable member, that a part at least of the displaceable member is marked with a contrasting colour or a reflective surface to improve sensitivity of the camera to displacement of the displaceable member
Implementation Method 2
a part at least of the displaceable member is marked with a contrasting colour or a reflective surface to improve sensitivity of the camera to displacement of the displaceable member
Data Source
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AI summary
An oscillatory PEP therapy device (100) has valve (10) mounted at the end of a rocker arm (12) such that the valve is opened and closed during expiration through the device, thereby causing displacement of the rocker arm up and down. The housing (2) of the device (100) is transparent so that the camera (20) on a mobile phone (200) can be positioned to view displacement of the rocker arm (12) during use. The phone (200) is programmed to extract a signal indicative of the frequency of oscillation of the rocker arm (12) and this is displayed on the screen of the phone to provide feedback to the user.