Pulse Oximetry CPR Quality Feedback via Optical Transceiver
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Solution Overview
Problem
Current methods for monitoring CPR quality are inadequate, as they often require invasive procedures or specialized devices, and lack real-time feedback on compression interruptions, which can lead to suboptimal cardiac output and neurofunctional prognosis.
Innovation Solution
A medical device with an optical transceiver, digital processor, and output module that uses light signals to penetrate through human tissue, processing electrical signals to obtain peripheral circulation parameters related to CPR quality, including frequency and depth of compression, providing real-time feedback through visual, audio, and light information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ETCO2 or invasive blood pressure monitoring is used to determine CPR quality, then measurement precision is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent replaces complex mechanical monitoring systems (ETCO2, invasive blood pressure monitoring) with optical detection technology. The pulse oximetry system uses light absorption principles to detect blood oxygen saturation and pulse waves, providing CPR quality feedback without requiring specialized mechanical devices or invasive procedures.
Solution Approach 2:
The patent makes the pulse oximeter multi-functional by enabling it to not only measure blood oxygen saturation but also detect pulse waves and provide CPR quality feedback. This allows a commonly available device to serve multiple purposes, eliminating the need for separate specialized monitoring equipment.
2Device complexity
If manual observation of pulse oximetry waveforms is used to judge compression interruption, then device complexity is reduced, but measurement precision and response time deteriorate
Solution Approach 1:
The patent implements automated feedback systems that continuously monitor pulse wave characteristics and provide real-time alerts when compression interruptions are detected. The system processes pulse wave signals, identifies abnormalities indicating compression cessation, and immediately notifies rescuers, eliminating the delays and inaccuracies of manual observation.
Solution Approach 2:
The patent replaces manual visual observation with automated electronic detection and processing systems. The pulse oximeter's microprocessor analyzes pulse wave patterns objectively and continuously, providing more precise and reliable compression interruption detection compared to human observers who may miss subtle changes or react slowly.
3Measurement precision
If compression interruption monitoring is added to CPR quality feedback, then measurement precision is improved, but device complexity worsens
Solution Approach 1:
The patent enhances the pulse oximeter's existing capabilities to simultaneously provide multiple CPR quality parameters including compression depth, frequency, and compression interruption detection. By making the device multi-functional, the patent avoids adding separate monitoring systems, thereby improving measurement precision without proportionally increasing device complexity.
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 non-invasive, real-time monitoring of CPR quality, reducing compression interruptions and improving cardiac output and neurofunctional prognosis by providing timely feedback on compression depth and frequency.
Implementation Method 1
The light emitting tube can emit at least one light signal to penetrate through human tissue, and the receiving tube can then receive the at least one light signal and convert the at least one light signal into at least one electrical signal
Data Source
AI summary
Medical devices, plug-ins, systems, and methods for CPR quality feedback are disclosed. The medical devices can calculate peripheral circulation relevant parameters based on measured signals containing at least partial hemodynamic characteristics. Amplitude and area characteristics included in the peripheral circulation relevant parameters can further be determined for providing feedback and control relating to CPR quality during the compression process. Also, compression interruption during CPR can be evaluated based on a pulse waveform generated from the measured signals.