Wrist Therapy Device with Floating Indicator for Controlled Rotation
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Solution Overview
Problem
Current rehabilitation devices for wrist and forearm injuries are either too complex or expensive for independent use, lacking a simple and cost-effective solution to effectively increase the range of motion during recovery.
Innovation Solution
A device comprising a handle with a semi-circular, transparent deflection tube filled with a slow-moving indicator, such as a bubble or ball, which allows users to rotate their wrist or forearm at a controlled pace, with the indicator's movement quantifying the degree of rotation and providing feedback through numerical markings, promoting controlled exercises to elongate contracted tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex rehabilitation devices are used to effectively increase range of motion, then therapeutic effectiveness is improved, but device complexity and cost increase making them unsuitable for independent use
Solution Approach 1:
The device is segmented into simple, discrete components: a handle, a deflection tube, and an indicator. This segmentation allows each component to perform a specific function while keeping the overall device simple and inexpensive, yet effective for rehabilitation purposes.
Solution Approach 2:
The deflection tube with floating indicator provides immediate visual feedback to the user about the degree of wrist or forearm rotation. The indicator's position within the tube corresponds to the angle of rotation, allowing users to self-monitor and control their exercise intensity without complex electronics or supervision.
2Productivity
If fast wrist/forearm rotation is performed to complete exercises quickly, then productivity is improved, but loss of control occurs reducing therapeutic benefit
Solution Approach 1:
The slow-moving indicator provides continuous visual feedback that naturally regulates the speed of rotation. Users can see the indicator's position in real-time and adjust their rotation speed to maintain control, ensuring therapeutic benefit while completing exercises efficiently.
Solution Approach 2:
The indicator's slow movement speed is a deliberately changed parameter that transforms the user's rotation speed from potentially fast and uncontrolled to slow and controlled. This parameter change ensures users maintain control throughout the exercise range while still being able to complete multiple repetitions.
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 device facilitates controlled and progressive exercises that help increase the range of motion by providing a cost-effective and user-friendly method for both supervised and independent rehabilitation, allowing users to safely elongate muscles and improve mobility through guided stretching and rotation exercises.
Implementation Method 1
filled with a transparent liquid that contains a freely floating bubble or ball, which acts as an indicator. When the handle is rotated, the indicator floats away from the center of the deflection tube toward one of its ends.
Implementation Method 2
The indicator is designed to float slowly through the tube. The indicator takes between 0.5 seconds to 1.5 seconds to float between two numbers on the tube. This slow motion promotes controlled wrist and forearm rotation
Data Source
AI summary
The therapy device comprises a deflection tube and a handle, which are rotably disposed so as to be mutually perpendicular or parallel to one another. The deflection tube is made of transparent plastic or glass. It is semi-circular, closed on both ends, and filled with a transparent liquid that contains a freely floating bubble or ball, which acts as an indicator. When the handle is rotated, the indicator floats away from the center of the deflection tube toward one of its ends. The tube is marked at regular intervals with indicia, preferably numerals, which quantify the degree of deflection of the indicator toward an end of the tube, with higher numbers corresponding to greater deflection and hence greater rotation of the handle.