Low-Friction Finger Shell for Injured Digit Support
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Solution Overview
Problem
Injured musculoskeletal structures, such as broken toes or fingers, experience pain and hindered healing due to normal use transferring forces to the injury site, which existing immobilization methods fail to adequately address.
Innovation Solution
A device featuring a protective shell with a slippery interior surface and adjustable components that allows for partial or full extension and flexion of the injured digit, combined with an interface member and attachment devices to limit movement relative to adjacent healthy structures, facilitating natural movement and reducing force transfer during healing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If immobilization devices (casts, splints, bandages, braces) are used to protect and support injured musculoskeletal structures, then pain reduction and healing promotion are improved, but force transfer from normal use to the injury site increases causing discomfort and hindering healing
Solution Approach 1:
The patent introduces a low-friction interface (such as a slippery liner or coating) between the immobilization device and the injured musculoskeletal structure. This intermediary layer allows the structure to move freely within the device, preventing force transfer from normal use to the injury site while maintaining the protective and supportive function of the immobilization device
Solution Approach 2:
The patent transitions from a static immobilization approach to a dynamic one by allowing controlled movement of the injured musculoskeletal structure within the device. The low-friction interface enables the structure to move naturally during normal use, reducing stress and force transfer to the injury site while still providing protection and support
2Strength
If rigid immobilization is applied to protect injured structures, then structural support is improved, but natural movement capability deteriorates causing increased pain and inflammation
Solution Approach 1:
The low-friction interface acts as a mediator that decouples the rigid structural support function from the movement restriction effect. It allows the injured structure to move naturally within the rigid device, maintaining structural support while preserving movement capability
Solution Approach 2:
The patent employs a flexible low-friction interface layer (such as a thin film or liner) that can deform and accommodate natural movement of the injured musculoskeletal structure while the outer rigid structure provides structural support
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 effectively reduces pain and inflammation by allowing natural movement of injured musculoskeletal structures, minimizing force transfer and promoting healing by providing a low-friction interface and adjustable support.
Implementation Method 1
The interior cavity may include a slippery inner surface configured to provide a low friction interface between the protective shell and the finger
Data Source
AI summary
A device for enclosing a finger includes a protective shell having an opening for receiving the finger. The protective shell defines an interior cavity that is sized and shaped to allow extension and flexion of the finger within the shell.