Biostimulation Coil Layout for Continuously Steered Magnetic Fields
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Solution Overview
Problem
Current magnetic field generating-apparatuses for biostimulation are unable to apply magnetic fields with continuously changing directions, limiting their effectiveness in stimulating living tissues that spread in multiple directions, such as muscle tissue.
Innovation Solution
A magnetic field generating-apparatus with a configuration of cores and coils that allow for the generation of magnetic fields in multiple directions by adjusting the strengths and phases of magnetic fields produced by first and second coil portions, enabling the synthesis of magnetic fields at various angles without moving the apparatus, thereby stimulating nerve cells effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single coil is used to generate the magnetic field, then the apparatus structure is simple, but the magnetic field direction cannot be changed continuously
Solution Approach 1:
The single coil is divided into first and second coil portions wound around different pairs of leg portions. Each coil portion generates a magnetic field component in a specific direction, and by controlling the current in each portion independently, the overall magnetic field direction can be changed continuously without moving the apparatus.
Solution Approach 2:
The invention transitions from a single-direction magnetic field generation (one-dimensional control) to multi-directional magnetic field generation (two-dimensional control) by utilizing the spatial arrangement of multiple coil portions around the core's leg portions, enabling continuous direction change through phase and amplitude control.
2Stability of the object's composition
If the apparatus position is fixed, then the stability is improved, but the ability to apply magnetic fields in all directions is limited
Solution Approach 1:
The invention introduces dynamic control of magnetic field direction through independent phase and amplitude control of multiple coil portions, allowing the magnetic field vector to be steered continuously in different directions while the apparatus remains physically stationary, achieving dynamic adaptability without mechanical movement.
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 application of magnetic fields in all directions, maximizing the stimulation effect on living tissues by changing the direction of the applied magnetic field while maintaining the apparatus's position, effectively stimulating nerve cells extending in arbitrary directions.
Implementation Method 1
electricity is charged into a capacitor and is discharged through a switch unit to a serially connected coil, in which by flowing an impulse-shaped electric current through the coil with an LC resonance frequency, there is generated an AC magnetic field
Implementation Method 2
flowing an impulse-shaped electric current through the coil with an LC resonance frequency
Implementation Method 3
a magnetic field generating-apparatus for biostimulation in which it is possible to apply magnetic fields of different directions with respect to the living body
Implementation Method 4
there has been requested an apparatus which can operate stably and continuously even in a case in which a joule heat is generated when flowing an electric current through the coil
Data Source
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AI summary
A magnetic field generating-apparatus (1, 1A) for biostimulation including: a core (2, 22) formed by magnetic material; and coils (3, 23) wound around portions of the cores (2, 22), wherein the core includes at least two pairs of leg portions (20b, 21b, 22b)which are juxtaposed each other, in which for the respective two pairs of leg portions (20b, 21b, 22b), there are provided gap-portions (20c, 21c) which mutually cross each other, the coils (3, 23) include first coil portions (3a) and second coil portions (3b) forming a first magnetic-path and a second magnetic-path between the two pairs of leg portions (20b, 21b, 22b) and the gap-portions (20c, 21c) respectively; and wherein there is generated a magnetic field of first direction which lies on the first magnetic-path, there is generated a magnetic field of second direction which lies on the second magnetic-path, and depending on a magnetic field formed by synthesizing the magnetic field of first direction and the magnetic field of second direction, a living body is stimulated.