Directional Acoustic Leak Detection for Negative Pressure Wound Therapy
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Solution Overview
Problem
Leaks in negative pressure wound therapy systems are difficult to locate, reducing the effectiveness of treatment and complicating the maintenance of therapeutic pressure.
Innovation Solution
A leak detection device utilizing a directional microphone and visual indicators, such as LEDs or lasers, to pinpoint the location of leaks by detecting sound waves produced by the leaks, allowing for precise identification and repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If acoustic monitoring is used to detect leaks, then leak detection capability is improved, but device complexity increases due to multiple components required
Solution Approach 1:
The patent combines multiple detection modalities (acoustic monitoring via microphone, visual monitoring via light source and indicator, and pressure monitoring) into a single integrated leak detection device. This merging of functions allows the device to detect leaks through multiple pathways simultaneously, improving detection capability while presenting a unified user interface through the indicator that consolidates the complexity of multiple sensors into a single operational unit.
Solution Approach 2:
The leak detection device is designed to perform multiple functions: acoustic leak detection through the microphone, visual field indication through the light source and indicator, and pressure monitoring. This multi-functionality allows a single device to address various aspects of leak detection, improving overall detection capability while reducing the need for multiple separate devices.
2Measurement precision
If multiple detection modalities are integrated, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent merges acoustic monitoring, visual monitoring, and pressure monitoring into a single integrated device with a unified indicator system. This consolidation improves measurement precision by combining multiple detection modalities while managing complexity through integrated circuitry and a single user interface that processes all sensor inputs.
Solution Approach 2:
The indicator serves as an intermediary that consolidates information from multiple sensors (microphone, light source, pressure sensor) into a single visual display. This intermediary component allows the system to process multiple detection modalities simultaneously, improving measurement precision while presenting simplified output that manages the complexity of multiple input channels.
3Measurement precision
If directional microphone with narrow coverage angle is used, then leak location accuracy is improved, but detection area is reduced
Solution Approach 1:
The patent segments the detection process into two phases: first, the directional microphone with narrow coverage angle provides precise leak location identification; second, the light source and indicator provide broader visual field monitoring. This segmentation allows the system to use the narrow-beam microphone for accurate localization while the visual components cover a wider area, effectively combining the advantages of both approaches.
Solution Approach 2:
The patent transitions from a single-dimension acoustic detection (narrow coverage angle) to multi-dimensional detection by adding visual monitoring through light sources and indicators. This dimensional expansion allows the system to maintain high location accuracy through the directional microphone while compensating for the limited coverage area by incorporating visual field monitoring in additional spatial dimensions.
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
Enables efficient and accurate detection of leaks in negative pressure wound therapy systems, ensuring consistent treatment efficacy by maintaining optimal pressure levels.
Implementation Method 1
a leak detection device, such as an acoustic monitoring device, can be used for detecting the sound produced by a leak
Implementation Method 2
a light source which creates a visual depiction of the coverage angle of the microphone
Data Source
AI summary
Leak location devices and methods of using leak location devices that can be used in conjunction with negative pressure wound therapy systems are disclosed. In some embodiments, a leak location device can include a microphone for detecting sound pressure produced by a leak. Detected sound pressure can be compared to a threshold, which can correspond to background or ambient sound pressure. Background or ambient sound pressure can correspond to sound produced by a negative pressure source. The leak detection device can include a display configured to visually depict the detected sound, and a light source which creates a visual depiction of the coverage angle of the microphone.