Magnetic Field Circuit With Variable Inductance and Reversible Current
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Solution Overview
Problem
Existing devices for generating alternating magnetic fields for therapeutic or physiological effects in body tissue lack flexibility in frequency and current direction, limiting their effectiveness and applicability.
Innovation Solution
The apparatus and method incorporate a second inductor in the circuit, allowing for variable inductance and frequency adjustment by bypassing or short-circuiting, enabling flexible control of current flow direction and duration through separate branches, thereby enhancing the magnetic field's therapeutic potential.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single inductor and fixed circuit configuration is used, then the device structure is simple, but the frequency and current direction flexibility is limited
Solution Approach 1:
The circuit is divided into two separate branches: a first branch containing a switching device for controlling current direction, and a second branch containing an electric component (diode or electronic component) for providing alternative current path. This segmentation enables independent control of current flow characteristics, achieving frequency and direction flexibility while maintaining manageable structural complexity.
Solution Approach 2:
The circuit configuration is made dynamic through the switching device that can change states to alter current direction and flow characteristics. The switching device enables real-time adjustment of magnetic field parameters by dynamically reconfiguring the circuit topology, allowing the system to adapt to different therapeutic requirements.
2Ease of operation
If fixed current flow direction is used, then the circuit design is simple, but the ability to control current direction and duration is limited
Solution Approach 1:
The circuit is divided into two separate branches: a first branch containing a switching device for controlling current direction, and a second branch containing an electric component (diode or electronic component) for providing alternative current path. This segmentation enables independent control of current flow characteristics, achieving frequency and direction flexibility while maintaining manageable structural complexity.
Solution Approach 2:
The switching device acts as an intermediary element that mediates current flow between the electric storage device and the inductor. By controlling the switching device state, the operator can direct current through different branches, enabling precise control of current direction and duration without requiring complex multi-component assemblies.
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
This approach allows for targeted and adjustable magnetic field generation, influencing neural or cellular reactions in body tissue, including muscle responses, with enhanced therapeutic effects.
Implementation Method 1
an inductor for generating a magnetic field for application to body tissue; wherein the switching device is configured to electrically connect the electric storage device to the inductor... thereby causing the inductor to generate the magnetic field
Data Source
AI summary
A magnetic field for application to body tissue is generated via a first inductor. Connecting circuitry, including at least first and second branches, is provided between an electric storage device and the first inductor. A switch forming part of the first branch electrically connects the storage device to the first inductor enabling electrical current to flow through the first branch and the first inductor, thereby causing the first inductor to generate the field. The current flowing through the first branch represents a first direction of flow between the storage device and the first inductor. An electric component conducts current primarily in a forward direction. That component forms part of the second branch, enabling current to flow between the storage device and the first inductor through the second branch. The flow in the forward direction represents a second direction opposite the first. A second inductor is connected in series with the first inductor. The second inductor has a variable inductance or can be bypassed using bypass circuitry. Electrical current flowing through the first inductor and through the connecting circuitry will also flow through the second inductor or the bypass circuitry, regardless of whether the electrical current flows through the first or the second branch.