Brainwave Acquisition Hardware
1 Background Introduction
1.1 Company Introduction
NeuraMATRIX's R&D focus is primarily on invasive brain-computer interfaces (BCIs), with a keen interest in the most fundamental interface hardware. Its products cover electrode materials, neural interface-specific chips, wireless multi-point interface system devices, brain signal acquisition and analysis visualization platforms, and system-level brain-computer interface platforms. Currently, NeuraMATRIX has completed a system-level chip upgrade, producing a hundred-channel chip that is only half the size of a fingernail, integrating acquisition, stimulation, and wireless interaction functionalities on a self-developed chip. Research data shows that NeuraMATRIX's system-level chip outperforms Neuralink’s product in both noise resistance and wireless capabilities.
NeuraMATRIX has developed the ‘MetaTron’ wireless frontal lobe EEG device, which integrates five acquisition channels, and began mass production at the end of 2023. Additionally, NeuraMATRIX is developing more highly integrated specialized chips, with products expected to be commercialized in the first half of 2025. By then, NeuraMATRIX's products will match Neuralink's in terms of the number of channels.
1.2 Project Background
The brain-computer interface platform targeted by this project will bring new technological tools to brain and neuroscience, offering a complete solution from hardware and supporting consumables to data services. It will assist in cutting-edge scientific exploration, disease mechanism research, innovative drug development and evaluation systems, motor assistance, prosthetic control, sensory communication, and more. In the scientific experiment instrument market, it will replace existing cable-based equipment (worth billions of dollars). In the consumer equipment market, it will replace existing imported chips, achieving higher integration, more channels, and lower power consumption with independently developed chips.
Currently, the project’s products are primarily aimed at the R&D market. The first neuro signal monitoring and analysis platform can provide a new quantitative and precise method for drug efficacy evaluation in new drug development and has already started collaborating with relevant enterprises. In scientific research system products, it has also revolutionized traditional wired brain-computer signal acquisition devices, changing the communication and acquisition methods. These products have already successfully achieved mass production, with around ten customers currently in trial use. Future cooperation will mainly target hospitals, particularly the neurology and neurosurgery departments of top-tier hospitals, to conduct clinical trials of medical devices. This will help the company develop early self-sufficiency, optimize technology iteration products, and unlock long-term significant commercial value.
2 Product Introduction
2.1 System Overview
Currently, non-invasive EEG acquisition devices used in research environments are mostly wired systems, which limit the mobility and behavior of the subjects, thereby restricting the scope of the research itself. The METATRON frontal lobe EEG device provided by NeuraMATRIX is compact and lightweight, measuring 44x25.5x13.4 mm and weighing only 13g. The 5-channel acquisition meets the standard requirements for frontal lobe acquisition channels. It is also accompanied by EEG acquisition and analysis software, providing a more convenient all-in-one solution. (As shown in the figure below)
Image of METATRON device and software
2.2 Main Unit Technical Specifications
2.2.1 Main Unit Performance Specifications
Normal Operating Conditions a) Ambient Temperature Range: 5℃ to 40℃ b) Relative Humidity Range: ≤80%, non-condensing c) Atmospheric Pressure Range: 860 hPa to 1060 hPa d) Power Supply: e) Powered by rechargeable lithium battery, 3.7V
Performance Parameters a) Sampling Rate: 1000Hz b) Battery Life: 12 hours c) Operating Distance: <15m
Appearance and Structural Parameters a) Weight: 13g b) LED: Red and green dual-color c) Dimensions: 44x25.5x13.4 mm d) Color: Silver-white
2.2.2 Electrical Performance Specifications
Regulatory reference sources:
JJF 1388-2013 Outline for Type Evaluation of Digital Electroencephalographs and EEG Mapping Instruments
GB 9706.226-2021 Medical Electrical Equipment—Part 2-26: Particular Requirements for the Basic Safety and Essential Performance of Electroencephalographs
2.3 Software Functions
2.3.1 Patient Management
Create, delete, modify, and store patient-related information, and manage the corresponding data files.
2.3.2 Device Connection Function
Check the connection status of the EEG device via software.
2.3.3 EEG Data Acquisition Function
Real-time acquisition and display of EEG signals.
2.3.4 Video Data Acquisition Function
Real-time acquisition and display of video signals from cameras.
2.3.5 Filtering Module
Measure the maximum and minimum values of physiological acquisition signals. Perform filtering on the acquired signals.
2.3.6 Data Export Function
Record, delete, query, and export the acquired data.
2.3.7 User Management
User login function, with options to modify the password and recover the password after login.
2.3.8 Notification and Alarm Function
Low battery notification and Bluetooth connection status notification.
2.3.9 Data Storage Function
After recording begins, the data collected by the device is saved in a specified format.
2.3.10 Playback of Recorded Data
Replay and display recorded EEG data and video data.
2.4 Data Interface
Wireless Protocol: Bluetooth® low energy, Bluetooth 5.0 or above protocol
Storage Format: Electrical signal acquisition data is stored in CSV format. Video signals are stored in mp4 format.
2.5 User Access Control
User Authentication Method: Login using username and password.
2.6 Safety Requirements
Should comply with the JJF 1388-2013 Outline for Type Evaluation of Digital Electroencephalographs and EEG Mapping Instruments and GB 9706.226-2021 Medical Electrical Equipment—Part 2-26: Particular Requirements for the Basic Safety and Essential Performance of Electroencephalographs.
2.7 Electromagnetic Compatibility
Should comply with "YY 9706.102-2021 Medical Electrical Equipment—Part 1-2: General Requirements for Basic Safety and Essential Performance Parallel Standard: Electromagnetic Compatibility Requirements and Tests".
2.8 Environmental Testing
Should comply with the requirements of Group II climate environment and Group II mechanical environment in GB/T 14710-2009.
3 System Safety
The safety of the frontal lobe EEG acquisition system is ensured through the following measures:
The device operates with a battery voltage of 3.7V, which is well within the safe voltage limit for the human body (36V).
The connection between the electrodes and the device uses insulated cables for encapsulation.
The parts of the device that come into contact with the human skin are ordinary electrode pads made from medical-grade materials, all of which meet biocompatibility requirements and are harmless to human skin.
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