Universal Respiratory Detector With Reversible Colorimetric CO2 Sensing
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Solution Overview
Problem
Existing respiratory monitoring devices are bulky, expensive, require training for use, and are prone to contamination, limiting their applicability and effectiveness in various environments and situations.
Innovation Solution
A universal respiratory detector that is biocompatible, conformable, and reversibly changes color to indicate respiratory parameters, allowing for easy application on various surfaces and providing a visual signal without the need for electrical power or complex setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional respiratory monitoring devices are used, then respiratory parameters can be measured, but the devices become bulky and expensive
Solution Approach 1:
The patent employs a colorimetric indicator that changes color in response to carbon dioxide concentration changes in exhaled breath. This visual color change mechanism replaces complex electronic sensors and display systems, enabling respiratory monitoring without bulky equipment while maintaining measurement precision through the chemical response of the indicator to CO2
Solution Approach 2:
The invention substitutes mechanical and electronic measurement systems with a chemical sensing approach. Instead of using electronic sensors, batteries, and display screens, the patent uses a chemical indicator that visually responds to respiratory gas composition, thereby eliminating the need for complex mechanical and electrical components that would increase device volume
2Reliability
If conventional monitoring devices are used, then respiratory status can be monitored, but training is required for proper use
Solution Approach 1:
The respiratory monitoring device is designed to be self-indicating through its colorimetric visual signal. The device automatically responds to respiratory gas changes without requiring user intervention, calibration, or operational knowledge. The color change occurs spontaneously in response to CO2 concentration, eliminating the need for training while maintaining reliable monitoring
Solution Approach 2:
The visual color change provides an intuitive, immediate indication of respiratory status that requires no interpretation or training. Users can directly observe the color change to determine breathing status, eliminating the learning curve associated with electronic displays and complex monitoring interfaces while maintaining accurate respiratory monitoring
3Reliability
If conventional monitoring devices are used, then breathing can be monitored, but contamination by viruses and biologic agents occurs
Solution Approach 1:
The patent employs a disposable indicator element that is discarded after single use, eliminating the risk of contamination accumulation and viral persistence. The disposable nature ensures that no cross-contamination occurs between patients or uses, while the indicator maintains its monitoring capability throughout its brief service life before being discarded
Solution Approach 2:
The visual colorimetric indicator provides immediate visual feedback on respiratory gas composition without requiring contact with the user or environment. The indicator responds to CO2 concentration changes through color change, enabling monitoring while minimizing contact points for potential contamination, as the indicator itself remains isolated within its housing
4Measurement precision
If conventional monitoring devices are used, then respiratory parameters can be detected, but the devices require electrical power sources
Solution Approach 1:
The patent replaces electronic detection systems with a chemical sensing mechanism. The colorimetric indicator responds directly to carbon dioxide concentration changes through chemical reaction, eliminating the need for electrical power sources such as batteries or external power supplies while maintaining precise respiratory gas detection capability
Solution Approach 2:
The visual color change response of the indicator provides direct detection of respiratory gas parameters without requiring electrical energy. The chemical reaction between the indicator and CO2 produces an immediate visual signal, enabling respiratory monitoring in environments where electrical power may be unavailable or unreliable
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 detector offers a rapid, reversible visual indication of respiratory status, is easy to use, and minimizes contact and contamination risks, making it suitable for diverse health conditions and environments.
Implementation Method 1
a visual indicator on the backing, the visual indicator configured to reversibly change color when a respiratory gas parameter changes and to display the color change
Data Source
AI summary
A universal respiratory detector for detecting a respiratory gas. The universal respiratory detector may include a plurality of layers with a visual indicator to quickly and reversibly change color to detect a respiratory gas parameter such as carbon dioxide. The color change may be visible from both sides of the detector. In some examples, the respiratory detector may be a biocompatible and conformable sticker for mounting on a person's face or an oxygen delivery device.