Mobile Plethysmographic Device for PVC Detection
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Solution Overview
Problem
Current methods for diagnosing premature ventricular contraction (PVC) events are cumbersome and often lead to misdiagnosis due to the need for ECG devices, which can deter patients from seeking proper diagnosis, especially for peripheral artery disease and other heart-related conditions.
Innovation Solution
A mobile plethysmographic device worn on the arm or wrist that continuously monitors heart rate and generates a photoplethysmograph signal, using an integrated accelerometer to validate data, allowing for the detection of PVC events and other heart anomalies through algorithms that analyze waveform data for anomalies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ECG devices are used to diagnose PVC events, then diagnostic accuracy is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent replaces the traditional ECG electrical measurement system with an optical photoplethysmographic system using light-emitting diodes and photodetectors. This substitution maintains diagnostic capability for detecting PVC events while eliminating the complexity associated with electrical lead placement and ECG device operation, making the system more convenient for continuous monitoring.
2Measurement precision
If ECG devices are used to diagnose PVC events, then diagnostic accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The patent replaces the traditional ECG electrical measurement system with an optical photoplethysmographic system using light-emitting diodes and photodetectors. This substitution maintains diagnostic capability for detecting PVC events while eliminating the complexity associated with electrical lead placement and ECG device operation, making the system more convenient for continuous monitoring.
3Measurement precision
If traditional blood pressure cuff methods are used for PAD diagnosis, then diagnostic capability is improved, but productivity and convenience deteriorate
Solution Approach 1:
The patent enables continuous monitoring of photoplethysmographic waveforms over extended periods, allowing for the detection of PVC events and assessment of peripheral circulation continuously rather than through discrete intermittent measurements. This continuous action improves diagnostic efficiency and productivity while maintaining diagnostic capability.
Solution Approach 2:
The device incorporates automated algorithms that independently analyze the photoplethysmographic waveforms to detect PVC events and assess peripheral artery disease, eliminating the need for manual analysis by healthcare providers and significantly improving diagnostic productivity and efficiency.
4Measurement precision
If manual diagnosis methods are used for heart conditions, then diagnostic thoroughness is improved, but loss of time increases
Solution Approach 1:
The device incorporates automated algorithms that independently analyze the photoplethysmographic waveforms to detect PVC events and assess peripheral artery disease, eliminating the need for manual analysis by healthcare providers and significantly improving diagnostic productivity and efficiency.
Solution Approach 2:
The device performs preliminary automated analysis of cardiac events and generates diagnostic information in real-time, allowing for immediate detection and notification of PVC events without requiring subsequent manual review, thereby reducing diagnostic time while maintaining thoroughness.
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 mobile device provides a simple, accurate, and convenient means to screen for heart conditions, including PVC events, allowing for continuous monitoring and data storage with the ability to transmit data via Bluetooth or USB, facilitating early detection and management of heart-related issues.
Implementation Method 1
measuring an optical signal generated by an optical sensor and processed by a processor, the optical sensor and processor on a mobile device
Implementation Method 2
The mobile plethysmographic device uses an integrated accelerometer to validate the accuracy of the pleth waveform by detecting motion that is disturbing and corrupting the pleth waveform
Data Source
AI summary
A mobile plethysmographic device for detecting a premature ventricular contraction event is disclosed herein. The mobile plethysmographic device generates a pleth waveform, which is automatically screened by algorithms that measure the waveform to correlate, detect and store aberrations related to heart anomalies. A premature ventricular contraction event for a patient is determined based on an identification of a time interval of the pleth waveform that is below the threshold minimum time interval followed immediately by a time interval that is above the threshold maximum tine interval.