Magnetic Nanostimulator Array for Precise Neural Targeting
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Solution Overview
Problem
Existing external magnetic stimulation systems for nerve cells require strong magnetic fields to penetrate the body, leading to low resolution and difficulty in targeting specific nerve cells, while deep brain stimulation methods involve electrodes that may not provide precise control over nerve cell firing.
Innovation Solution
An apparatus with an array of biological material stimulators mounted on a substrate, generating a fluctuating magnetic field using magnetic nanowires or tunnel junctions to induce currents in biological materials, allowing for precise stimulation and sensing of nerve cells, with the ability to focus stimulation on specific areas using flexible substrates and varying nanowire heights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If strong magnetic fields are used for external magnetic stimulation, then the magnetic field can penetrate into the body, but the area affected increases resulting in low resolution and difficulty in targeting specific nerve cells
Solution Approach 1:
The patent divides the stimulation system into multiple independent magnetic nanowire stimulators arranged in arrays, allowing selective activation of individual stimulators or small groups to target specific nerve cells with high precision while minimizing the affected area
Solution Approach 2:
The patent transitions from external macroscopic magnetic field application to internal nanoscale magnetic field generation by inserting magnetic nanowires directly at the target site, enabling precise local stimulation without affecting surrounding areas
2Measurement precision
If external magnetic fields are used for stimulation, then nerve cells can be stimulated, but the resolution and ability to direct field to select nerve cells is poor
Solution Approach 1:
The system segments the magnetic field generation into multiple independent nanowire stimulators that can be individually controlled, enabling precise targeting of specific nerve cells or small groups while maintaining ease of operation through selective activation
Solution Approach 2:
Each magnetic nanowire stimulator generates a localized magnetic field at its specific position, allowing different regions to stimulate different nerve cells independently,从而实现 high-resolution control over which specific nerve cells are activated
3Measurement precision
If electrodes are inserted for deep brain stimulation, then electric field can be generated in target area, but precision control over nerve cell firing is limited
Solution Approach 1:
The patent replaces the traditional electrical electrode stimulation mechanism with a magnetic field-based mechanism using magnetic nanowires, which generate fluctuating magnetic fields that induce currents in nerve cells, providing more precise control over nerve cell firing while maintaining manageable system complexity
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 precise control over nerve cell firing with reduced magnetic field strength, improving resolution and targeting capabilities, and allowing for wireless operation with minimal invasiveness, thereby enhancing the precision and efficiency of neural stimulation.
Implementation Method 1
Each biological material stimulator forms a fluctuating magnetic field capable of inducing a current in biological material
Data Source
AI summary
An apparatus includes a substrate and a plurality of biological material stimulators positioned on the substrate. Each biological material stimulator forms a fluctuating magnetic field capable of inducing a current in biological material.