Apnea Analysis System Differentiating Obstructive and Central Apnea
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Solution Overview
Problem
Current capnographic systems can detect apnea but fail to differentiate between obstructive and central apnea types, hindering proper diagnosis and treatment.
Innovation Solution
An apnea analysis system that combines photoplethysmographic (PPG) and breath signals to identify respiratory components, differentiating between obstructive and central apnea by analyzing respiratory effort and airflow, and includes a module to classify apnea types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a typical capnographic system is used to detect apnea, then apnea detection capability is provided, but the ability to differentiate between types of apnea is lost
Solution Approach 1:
The patent combines capnographic breath signal analysis with PPG signal respiratory component analysis into a unified apnea analysis system. By merging these two complementary measurement approaches, the system achieves both accurate apnea detection and differentiation between obstructive and central apnea types, resolving the contradiction between detection capability and information completeness
2Device complexity
If only capnographic signal analysis is performed, then system simplicity is maintained, but the ability to classify apnea types is insufficient
Solution Approach 1:
The patent segments the apnea analysis function into two independent but complementary components: capnographic breath signal analysis and PPG respiratory component analysis. Each component processes its respective signal type separately, then the results are integrated to achieve accurate apnea classification. This segmentation allows the system to maintain modularity while improving classification 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 accurate classification of apnea types, facilitating timely medical interventions and improving patient care by distinguishing between obstructive and central apnea events.
Implementation Method 1
a photoplethysmographic (PPG) sensor outputting a PPG signal from the individual
Data Source
AI summary
An apnea analysis system may include a photoplethysmographic (PPG) sub-system, a breath detection sub-system, and an apnea analysis module. An apnea analysis system includes a photoplethysmographic (PPG) sub-system, a breath detection sub-system, and an apnea analysis module. The PPG sub-system is configured to be operatively connected to an individual and output a PPG signal from the individual. The breath detection sub-system is configured to be operatively connected to the individual and output a breath signal from the individual. The apnea analysis module is in communication with the PPG sub-system and the breath detection sub-system. The apnea analysis module analyzes the breath signal and a respiratory component of the PPG signal and, based on the analysis, identifies a presence of apnea, differentiates between obstructive apnea and central apnea, and provides an indication of the identified apnea.