Mag-lev limb training device with magnetic levitation
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Solution Overview
Problem
Existing rehabilitation devices struggle to provide controlled and specific movement ranges for complex joints like the shoulder, often resulting in inadequate rehabilitation due to high friction and lack of precision in movement control.
Innovation Solution
A device utilizing magnetic levitation technology with a movable base and computer-controlled electromagnets to reduce friction and allow customizable movement paths, enabling precise control of limb movements along defined trajectories with minimal to no friction, aided by pegs, tracks, and blocking structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic levitation is used to reduce friction, then movement smoothness is improved, but device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical contact-based friction reduction methods (such as ball bearings or sliding surfaces) with magnetic levitation technology. Electromagnets positioned along the board create magnetic fields that levitate the base, eliminating physical contact and thereby eliminating friction entirely. This substitution of mechanical systems with magnetic fields directly resolves the contradiction by achieving perfect movement smoothness while accepting the necessary increase in device complexity through the electromagnetic system.
2Measurement precision
If electromagnets are used to control movement path, then movement precision is improved, but energy consumption increases
Solution Approach 1:
The patent employs periodic action through the computer controller that selectively activates and deactivates specific electromagnets in sequence along the board. Rather than maintaining continuous electromagnetic engagement, the system activates only the electromagnets needed for the current position and movement phase, creating a periodic pattern of engagement. This approach maintains precise movement control by ensuring the limb follows the defined trajectory through strategic electromagnetic activation, while significantly reducing overall energy consumption compared to continuous operation.
3Adaptability or versatility
If customizable movement ranges are implemented, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamics through the computer-controlled electromagnet system that can dynamically adjust movement ranges, speeds, and trajectories based on programming. The system transitions from static, fixed movement paths to dynamic, programmable movement patterns that can be customized for different rehabilitation needs. By using software control rather than physical reconfiguration, the system achieves high adaptability for various joint types and rehabilitation protocols while minimizing the increase in physical device 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 controlled and customizable rehabilitation by minimizing friction, allowing for precise movement training and strengthening of joints with adjustable resistance, enhancing the effectiveness of physical therapy and surgical procedures.
Implementation Method 1
the magnet is repelled from at least one of the plurality of electromagnets to levitate the base from the board
Implementation Method 2
the plurality of magnets such as electromagnets positioned along the board to define a movement path of the base
Data Source
AI summary
A device for training and rehabilitation of a limb is provided. The device provides a board with an ability to magnetically levitate a movement base above the board to allow for controlled movement of a limb or other body part of a user needing training and rehabilitation in various directions.