Modular ECG EEG Acquisition System Serial Bus Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ECG data acquisition systems face challenges in efficiently switching between 5 lead and 12 lead configurations, requiring time-consuming electrode changes and potentially compromising signal accuracy, especially when additional signals like EEG need to be measured, leading to cluttered examination environments and safety concerns due to unshielded lead wires.
Innovation Solution
A modular data acquisition system with expandable ECG and EEG capabilities, utilizing a serial interface and analog-to-digital converters, where patient-side units connect via a serial bus to a common Wilson terminal, allowing for seamless expansion from 5 lead to 12 lead ECG and incorporating EEG measurements with reduced noise and improved safety through isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If 12 lead ECG electrode set is used, then measurement accuracy is improved, but device complexity and wiring burden increase
Solution Approach 1:
The ECG measurement system is divided into separate functional modules: a 5-lead ECG measurement unit and a 12-lead ECG extension unit. Each module can be independently connected to the patient monitor via serial bus, allowing the system to provide 12-lead measurement capability without requiring all electrodes and cables to be permanently connected. This segmentation reduces wiring complexity while maintaining measurement accuracy.
Solution Approach 2:
The patient monitor is designed with universal input capabilities that can accept both 5-lead and 12-lead ECG measurement units through the same serial bus interface. The system can automatically recognize and adapt to different electrode configurations, allowing a single device to serve multiple measurement needs without requiring separate dedicated equipment for each lead configuration.
2Measurement precision
If electrode configuration is changed from 5 lead to 12 lead, then measurement accuracy is improved, but time consumption increases
Solution Approach 1:
The 12-lead ECG extension unit is pre-configured with all necessary electrodes and wiring arrangements before the measurement process begins. The unit can be kept in standby position and quickly connected to the patient monitor when 12-lead measurement is needed, eliminating the time-consuming process of attaching individual electrodes during the examination. The extension unit maintains ready-to-use connections that can be rapidly deployed.
3Device complexity
If 5 lead ECG measurement is used, then device simplicity is improved, but measurement capability is reduced
Solution Approach 1:
The ECG measurement system is designed with dynamic scalability, allowing it to operate in 5-lead mode for routine monitoring when simplicity is preferred, and to be easily expanded to 12-lead mode when comprehensive diagnostic capability is needed. The serial bus interface dynamically adapts to the connected measurement unit, providing the appropriate measurement capability without requiring permanent configuration changes or additional wiring infrastructure.
4Adaptability or versatility
If separate EEG device is used, then measurement capability is improved, but device complexity and environmental clutter increase
Solution Approach 1:
The EEG measurement unit is integrated with the ECG measurement system through the common serial bus interface, merging multiple physiological signal measurement capabilities into a single unified platform. Both ECG and EEG units can be simultaneously connected to the patient monitor, allowing concurrent measurement of different physiological signals without requiring separate dedicated equipment for each type of measurement, thereby reducing environmental clutter and simplifying the examination setup.
Data Source
AI summary
A floating physiological data acquisition system with expandable ECG and EEG. The data acquisition system for obtaining electrophysiological signals from a patient comprises a patient monitor and separate patient side acquisition units connectable to the patient monitor. Each of the patient side acquisition units comprises an analog-to-digital converter, a serial interface communicative towards a serial bus connecting the patient side data acquisition unit with the patient monitor, and a serial interface controller processor. Each of the patient side acquisition units further forms a part of a floating patient applied part of the data acquisition system.