Lung Testing Mouthpiece With Split Gas Chambers for Precise Analysis
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Solution Overview
Problem
Existing devices for determining respiratory air composition fail to simultaneously measure mechanical and chemical parameters of the respiratory system efficiently, often requiring patient cooperation and lacking precise gas measurement spaces.
Innovation Solution
A device with a spatially divided gas measurement space, comprising a first and second gas measurement space separated by a sealable opening, allows simultaneous measurement of mechanical and chemical parameters using pressure and gas sensors, respectively, with the second space being sealed to maintain air volume for accurate chemical analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single gas measurement space is used, then the device structure is simple, but the measurement precision of gas composition is insufficient
Solution Approach 1:
The gas measurement space is divided into two distinct parts: a first gas measurement space for mechanical parameter measurement and a second gas measurement space for chemical parameter measurement. This segmentation allows each space to be optimized for its specific measurement function, thereby improving overall measurement precision while maintaining a manageable device structure.
2Productivity
If mechanical and chemical parameters are measured simultaneously, then the productivity of respiratory function testing is improved, but the device complexity increases
Solution Approach 1:
The device combines mechanical parameter measurement (pressure sensor in the first gas measurement space) and chemical parameter measurement (gas sensor in the second gas measurement space) into a single integrated system. This merging allows simultaneous measurement of both parameter types, significantly improving respiratory function testing efficiency despite the increased device complexity.
3Measurement precision
If the second gas measurement space is sealed, then the measurement precision of gas composition is improved, but the ease of operation decreases
Solution Approach 1:
The opening connecting the first and second gas measurement spaces is designed to be dynamically controllable, allowing it to be opened for sensor replacement or calibration and closed during measurement to maintain the sealed environment. This dynamic control enables the system to switch between accessibility and measurement precision 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
Enables precise and efficient determination of respiratory system function, including early detection of diseases like COPD and asthma, with minimal patient cooperation, by synergistically measuring mechanical and chemical properties of respiratory air.
Implementation Method 1
a pressure sensor for determining pressure in the first gas measurement space
Implementation Method 2
a gas sensor for determining a gas composition of the fluid introduced into the second gas measurement space
Data Source
AI summary
A device for determining measurement values describing the function of the lungs or the respiratory system of a patient includes a mouthpiece including a tube for introducing respiratory air and for sucking in air, and a gas measurement space. At least one of the following gas sensors is arranged in the gas measurement space: nitrogen monoxide sensor, carbon dioxide sensor, oxygen sensor, carbon monoxide sensor, multi-gas sensor, sensor for volatile organic compounds, alkane sensor, infrared sensor, fiber optic sensor, resistance sensor, and semiconductor sensor. The gas measurement chamber is separated by a closable opening into a first gas measurement chamber and a second gas measurement chamber, the second gas measurement chamber being closed or closable. The closable opening opens a flow path from the first gas measurement chamber into the second gas measurement chamber. A gas sensor is arranged in the second gas measurement chamber.