Wireless Neural Interface Electrodes for Stable Body-Channel Links
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Solution Overview
Problem
Existing wireless neural recording technologies face issues with power optimization, matching, and stability due to the need for specially manufactured antennas, coils, and transducers, as well as heat generation and mismatching between internal and external devices.
Innovation Solution
A wireless neural interface system utilizing simple electrodes positioned inside and outside the body for neural signal detection, communication, and power transmission/reception through a human body channel, eliminating the need for specialized components and optimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If specially manufactured antennas, coils, and transducers are used for wireless communication and power transmission, then wireless neural recording can be achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent applies universality by using ordinary electrodes to perform multiple functions: neural signal detection, wireless communication, and wireless power transmission. This eliminates the need for specially manufactured antennas, coils, and transducers, thereby reducing manufacturing complexity while maintaining wireless neural recording capability
Solution Approach 2:
The patent applies universality by using ordinary electrodes to perform multiple functions: neural signal detection, wireless communication, and wireless power transmission. This eliminates the need for specially manufactured antennas, coils, and transducers, thereby reducing manufacturing complexity while maintaining wireless neural recording capability
2Ease of operation
If antennas and coils are implanted in the body for wireless communication, then wireless signal transmission is enabled, but heat generation and cell stability problems occur
Solution Approach 1:
The patent extracts the harmful function of antennas and coils from the implantable device. By removing these components and using ordinary electrodes instead, the source of heat generation is eliminated while wireless communication capability is maintained through alternative mechanisms
Solution Approach 2:
The patent replaces expensive, heat-generating specialized components (antennas, coils) with simple, ordinary electrodes that do not generate significant heat. This substitution uses readily available materials that are biocompatible and stable for the required duration
3Reliability
If internal and external devices use different wireless communication components, then wireless communication can be established, but matching problems arise
Solution Approach 1:
The patent applies universality by using ordinary electrodes for both neural signal detection and wireless communication functions. This standardization eliminates the need for specialized matching between internal and external components, as both use the same electrode-based interface
Solution Approach 2:
The patent applies homogeneity by using the same type of ordinary electrodes for both internal implant and external device. This creates a uniform interface that eliminates matching problems between dissimilar components, as both sides use identical electrode-based communication mechanisms
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 system achieves stable and efficient neural signal detection and transmission with optimized power usage, overcoming issues of matching and stability, and enabling applications in brain-computer interfaces and disease diagnosis/treatment.
Implementation Method 1
detect a biosignal on the basis of the first electrode and the second electrode
Implementation Method 2
transmit the encoded oversampling signal to an external device, which is connected with the internal device through the human channel, through the third electrode
Implementation Method 3
supply power to the oversampling converter and the wireless signal transmitter in response to a power signal received from the external device through the fourth electrode
Data Source
AI summary
Devices included in a wireless neural interface system are disclosed. According to an embodiment, an internal device of a wireless neural interface system that performs communication through a human body channel may include: bio-electrodes including a first electrode, a second electrode, a third electrode, and a fourth electrode that are attached inside a human body; an oversampling converter configured to detect a biosignal on the basis of the first electrode and the second electrode, and output an oversampling signal by oversampling the biosignal; a wireless signal transmitter configured to encode the oversampling signal on the basis of a human body channel characteristic, and transmit the encoded oversampling signal to an external device, which is connected with the internal device through the human channel, through the third electrode; and a wireless power receiver configured to supply power to the oversampling converter and the wireless signal transmitter in response to a power signal received from the external device through the fourth electrode.