Ambulatory Brain Signal Telemetry with Wireless Multiplexing
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Solution Overview
Problem
Current methods for recording and transmitting bioelectric signals, such as EEG, from ambulatory subjects are limited by the need for wired connections, which restrict movement, and wireless connections offer limited bandwidth due to technological constraints and regulatory issues.
Innovation Solution
An ambulatory intrinsic brain signal processor circuit with a digital multiplexer and transceiver for wirelessly communicating brain signals, allowing user control over channel selection, data resolution, sampling rate, gain, filtering, and data storage to optimize bandwidth usage and signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wired connection is used between the subject and recording apparatus, then signal transmission reliability is improved, but subject mobility is restricted
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless electromagnetic communication system. The brain signal processor circuit transmits EEG data wirelessly to the external recording device, eliminating the physical tether that restricts subject movement while maintaining signal transmission capability.
2Ease of operation
If a wireless connection is used between the subject and recording apparatus, then subject mobility is improved, but available bandwidth is limited
Solution Approach 1:
The patent extracts and transmits only the essential brain signal data (EEG channels) rather than transmitting all possible data streams. By selecting specific channels and parameters to transmit wirelessly, the system optimizes bandwidth utilization while maintaining subject mobility.
Solution Approach 2:
The patent segments the brain signal data into discrete channels that can be independently selected and transmitted. The system allows selective transmission of specific EEG channels based on bandwidth availability and clinical needs, dividing the overall data stream into manageable segments.
3Loss of information
If continuous brain signal data is transmitted wirelessly, then data completeness is improved, but bandwidth consumption increases
Solution Approach 1:
The patent implements partial transmission by allowing the user to select specific EEG channels and data parameters to transmit rather than continuously transmitting all available data. This partial action approach maintains data completeness for selected channels while reducing overall bandwidth consumption.
Solution Approach 2:
The patent provides dynamic channel selection where the user can remotely control which EEG channels are active and being transmitted. This dynamic configuration allows the system to adapt bandwidth usage based on clinical priorities and available wireless capacity.
Data Source
AI summary
An ambulatory intrinsic brain signal processor circuit is coupled to a plurality of electrodes. The signal processor circuit can include a digital multiplexer circuit coupled to the electrodes to multiplex brain signal data from different electrodes together into a multiplexed data stream. An ambulatory transceiver circuit wirelessly communicates information to and from a remote transceiver. A controller circuit permits a user to control which of the electrodes contribute data, a data resolution, and whether the data includes one or both of neural action or local field potential data. Seizure prediction components and methods are also described.