Integrated EEG and EIT System for Simultaneous Brain Activity Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional EEG and EIT systems are limited in detecting abnormalities and inconsistencies beyond physiological cerebral activity and are not adaptable for simultaneous spectral electrical impedance tomography (SEIT) and electroencephalography recordings, nor are they portable for immediate medical response.
Innovation Solution
A computer-based system that generates internal impedance data over a range of frequencies to detect impedance changes associated with blood vessel characteristics or foreign objects, using a combination of electrodes, an electrical stimulator, and a high-channel A/D converter to produce real-time or static impedance maps, enabling simultaneous SEIT and EEG recordings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional EEG systems are used to record brain waves, then electroencephalography recordings can be obtained, but the system cannot detect impedance changes associated with blood vessels or foreign objects
Solution Approach 1:
The system integrates both EEG and EIT functionalities into a single platform, allowing it to perform both voltage measurement (EEG) and impedance measurement (EIT) operations. The computer system processes multiple types of physiological data simultaneously, enabling detection of both electrical brain activity and impedance changes from blood vessels or foreign objects through the same electrode array.
Solution Approach 2:
The patent combines EEG and EIT measurement systems into a unified arrangement where electrodes serve dual purposes. The switching system routes signals to either voltage measurement circuits or impedance measurement circuits, merging previously separate diagnostic capabilities into one integrated system that can detect both cerebral electrical activity and impedance abnormalities.
2Adaptability or versatility
If conventional EIT systems are used to produce electrical impedance images, then impedance data can be obtained, but the system cannot simultaneously perform EEG recordings
Solution Approach 1:
The system integrates both EEG and EIT functionalities into a single platform, allowing it to perform both voltage measurement (EEG) and impedance measurement (EIT) operations. The computer system processes multiple types of physiological data simultaneously, enabling detection of both electrical brain activity and impedance changes from blood vessels or foreign objects through the same electrode array.
Solution Approach 2:
The patent combines EEG and EIT measurement systems into a unified arrangement where electrodes serve dual purposes. The switching system routes signals to either voltage measurement circuits or impedance measurement circuits, merging previously separate diagnostic capabilities into one integrated system that can detect both cerebral electrical activity and impedance abnormalities.
3Ease of operation
If conventional EEG or EIT systems are used, then specialized recordings can be obtained, but the systems are not portable for immediate medical response
Solution Approach 1:
The system is designed as a modular portable unit with separate functional components (electrodes, switching system, amplifiers, A/D converter, computer) that can be independently optimized. This segmentation allows the system to maintain full EEG and EIT functionality while reducing overall size and power requirements for portable deployment in emergency medical settings.
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 the detection of abnormalities and inconsistencies, including foreign objects and internal bleeding, with a portable system suitable for emergency medical use, providing comprehensive and immediate data for decision-making.
Implementation Method 1
conventional electrical impedance tomography (EIT) systems have been employed to produce electrical impedance images in medical applications. These EIT systems measure current or voltage distributions resulting from the currents being applied to a portion of the body
Implementation Method 2
These EIT systems measure current or voltage distributions resulting from the currents being applied to a portion of the body of the patient
Data Source
AI summary
A system for detecting abnormalities or inconsistencies and a method to utilize the same are provided. In particular, a computer system may be adapted to detect the abnormality or inconsistency within at least a portion of a subject by generating internal impedance data which indicates that an impedance change within the portion of the subject has occurred. For example, the impedance change may be associated with a change in at least one characteristic of a blood vessel within the subject (such as a change in a fluid flow rate within at least a portion of the subject), a change in a fluid volume within at least a portion of the subject, etc. The impedance change also may be associated with the presence of a foreign object within the portion of the subject. In an exemplary embodiment, it is possible to detect the abnormality or inconsistency within the subject by generating a continuous, real time internal impedance map indicating the impedance change within the subject. Alternatively, the abnormality or inconsistency may be detected within the subject by generating a plurality of static internal impedance maps which indicate that the impedance change within the subject has occurred.