Remedial Deviation Roller With 90-Degree Phased Handles

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Solution Overview

Problem

Existing forearm/wrist rollers lack comprehensive training for the hand, wrist, and forearm, failing to provide complete radial training and optimal grip strength, finger dexterity, and functional hand positions for sports.

Innovation Solution

A forearm/wrist roller with perpendicular 90-degree phased handles and an adjustable resistance mechanism, allowing for torsional force application, ergonomic grip design, and adjustable weight, promoting grip strength, finger flexion, and opposition thumb positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single roller with centered spool is used, then the device structure is simple, but it fails to provide complete radial training for hand, wrist and forearm

Engineering Contradiction:

Improvetraining coverageVSAvoiddevice structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The single roller is segmented into two separate rollers positioned at opposite ends of the device. Each roller can be independently rotated by each hand, allowing separate training of left and right forearm muscles while maintaining a simple overall structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The handlebars are positioned asymmetrically at different locations along the roller axis, creating unequal lever arms for each hand. This asymmetry enables differentiated training intensity for each arm while keeping the device structure relatively simple.

Inventive Principle:

Principle #4Asymmetry

2Ease of operation

If rounded handles are provided at distal ends, then the device is easy to hold, but it does not allow for complete radial training of hands, wrist and forearm

Engineering Contradiction:

Improvegrip comfortVSAvoidtraining effectiveness

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The training capability is extended from a single rotational plane to multiple rotational planes by positioning handlebars at different locations along the roller axis. This enables training in both transverse and longitudinal dimensions, providing comprehensive radial training while maintaining comfortable rounded grips.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Ease of operation

If handles are positioned for comfortable grip, then ease of operation is improved, but finger dexterity and opposition thumb positions are not optimized

Engineering Contradiction:

Improvegrip comfortVSAvoidhand position precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

Different regions of the handlebar provide different training qualities. The rounded sections offer comfortable gripping surfaces for general use, while the positioned handlebars at specific locations provide precise hand positioning for advanced training techniques requiring finger dexterity and thumb opposition.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12453886B2Remedial deviation device for hand, wrist and forearm rehabilitation and training

Publication Date: 2025.10.28 DIRTY MIKE GOLF LLC

AI summary

A hand, wrist and forearm remedial deviation roller device which allows for a complete therapeutic and training exercise program to build and increase the muscles of the hands, wrists, and forearms through relative rotation of perpendicular adjustable phased handle grips and which is portable, simple in design, and inexpensive to construct.