Portable Respiratory Measurement Device Using Absolute Pressure Sensing
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Solution Overview
Problem
Conventional pulmonary function measuring devices are bulky, expensive, and inconvenient for self-diagnosis, particularly for early detection of lung diseases, and are not portable or effective for patients with mild or severe conditions.
Innovation Solution
A portable human respiratory system function measuring apparatus that includes a respirometer capable of calculating respiratory parameters such as airway resistance using absolute pressure, gas flux, and temperature, with a simplified structure for self-diagnosis and wireless data transmission, allowing remote monitoring and operation by medical staff.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional pulmonary function measuring devices are used, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the core measurement function from complex conventional devices by using only a sealed pipeline, pressure sensor, and temperature sensor to measure intrapulmonary pressure directly, eliminating the need for bulky equipment while maintaining measurement precision
Solution Approach 2:
The patent replaces complex mechanical measurement systems with electronic sensing technology, using pressure sensors and temperature sensors to directly detect physiological parameters, thereby simplifying device structure while improving measurement accuracy
2Measurement precision
If conventional pulmonary function measuring devices are used, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent enables self-service operation by allowing patients to perform pulmonary function tests independently at home using the simplified device, eliminating the need for doctor guidance and making the device suitable for household medical equipment
Solution Approach 2:
The patent removes the requirement for confined space and constant temperature/pressure environments by using a sealed pipeline system that maintains its own measurement environment, thereby simplifying operation conditions and improving ease of operation
3Measurement precision
If conventional pulmonary function measuring devices are used, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent enables patients to perform regular pulmonary function inspections independently at home without scheduling doctor appointments, thereby increasing the frequency of regular inspections and reducing time loss
Solution Approach 2:
The patent allows patients to conduct preliminary pulmonary function tests at home before seeking medical attention, enabling early detection of lung diseases and reducing the time delay in diagnosis and treatment
4Measurement precision
If conventional pulmonary function measuring devices are used, then measurement precision is improved, but adaptability deteriorates
Solution Approach 1:
The patent creates a universal measurement device that can be used by patients with various pulmonary conditions (mild, moderate, and severe) and by both patients and doctors, thereby improving adaptability while maintaining measurement precision
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 early detection of lung diseases through convenient and cost-effective testing, suitable for patients with mild or severe conditions, reducing errors due to altitude variations and facilitating remote monitoring.
Implementation Method 1
a pressure sensor measuring the absolute pressure of the breathing airflow in the respiration measuring pipeline, so as to obtain intrapulmonary pressure of the user
Implementation Method 2
a temperature sensor sensing the breathing airflow temperature of the breathing airflow in the respiration measuring pipeline
Implementation Method 3
a flow sensor sensing a gas flux of the breathing airflow in the respiration measuring pipeline
Implementation Method 4
a gas density is calculated based on the intrapulmonary pressure and the breathing airflow temperature
Implementation Method 5
the respirometer measures a pressure difference generated by the breathing airflow, and calculates the gas flow rate from the pressure difference
Data Source
AI summary
A measurement device for a human respiratory system function comprises a respiration measurement device (20). The respiration measurement device (20) receives a respiratory air flow and senses the respiratory air flow to generate a set of sensing signals, and performs calculation according to the sensing signals to generate a human respiratory system parameter, the sensing signals comprising at least an absolute pressure of the respiratory air flow. The respiration measurement device (20) comprises a respiration measurement channel (21). The absolute pressure generated by a respiratory air flow of a user in the respiration measurement channel (21) that is in a single-end sealed state is measured. The absolute pressure corresponds to the pressure in the lung of the user.