Deformed Nail Corrector with Screw Impeller for Painless Insertion
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Solution Overview
Problem
Conventional deformed nail correctors fail to effectively correct ingrown nails, particularly those with serious curvature or irregularly shaped lateral edges, as they often cause pain and cannot be easily inserted into the root of the nail without damaging the surrounding tissue, leading to incomplete correction and recurrence of the deformity.
Innovation Solution
A band-shaped deformed nail corrector with a screw impeller-shaped portion and a hook portion is designed to be inserted between the nail edge and nail fold, allowing smooth insertion into the nail root without causing pain, featuring a screw impeller-shaped portion with a curvature angle of 90° or less and a hook portion with a curvature angle of 90° or more, ensuring efficient correction of the nail curvature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional correctors are used to correct ingrown nails, then correction effect is achieved, but pain and tissue damage occur during insertion
Solution Approach 1:
The corrector employs a screw impeller-shaped portion with a specific curvature angle of 90° or less, which allows the device to follow the natural curvature of the nail fold and nail edge. This curved geometry enables smooth insertion without forcing the corrector through the tissue, thereby eliminating pain and preventing tissue damage while maintaining effective correction capability
Solution Approach 2:
The patent specifies precise geometric parameters including a curvature angle of 90° or less for the screw impeller portion and a width-to-length ratio within a specific range. These parameter optimizations ensure the corrector fits the anatomical structure of the nail region, allowing painless insertion while maintaining sufficient mechanical leverage for effective nail correction
2Reliability
If conventional correctors are inserted into the nail root, then correction effectiveness is improved, but insertion becomes difficult without damaging surrounding tissue
Solution Approach 1:
The screw impeller-shaped portion with curvature angle of 90° or less is specifically designed to match the anatomical curvature of the nail fold and nail edge interface. This allows the corrector to be gradually inserted into the nail root region by following the natural tissue contours, making insertion easy while preventing tissue damage and enabling effective correction at the root level
Solution Approach 2:
The corrector's insertion edge region with screw impeller shape is designed to nestle between the lateral nail edge and lateral nail fold, creating a nested configuration that allows deep insertion into the nail root area without displacing or damaging surrounding soft tissue structures
3Ease of operation
If the corrector structure is simplified for easy insertion, then insertion ease is improved, but correction precision is reduced
Solution Approach 1:
The patent specifies precise geometric parameters including curvature angle of 90° or less, width-to-length ratio within a specific range, and defined dimensions for the screw impeller portion. These controlled parameters ensure that the simplified structure maintains sufficient mechanical leverage and geometric precision for effective nail correction while preserving ease of insertion
Data Source
AI summary
The corrector includes a band-shaped central region to be in contact with an upper surface of the nail; and an insertion edge region continuously extended from at least one end of the band-shaped central region to be inserted between a lateral nail edge and a lateral nail fold, wherein when a direction of a base side of the nail is defined as an upstream and a direction of a tip side of the nail is defined as a downstream in a state that the corrector is attached to the nail, a screw impeller-shaped portion having a specific shape and dimension is formed on a portion including an end portion of an upstream side of the insertion edge region and a hook portion is formed on a downstream side of the insertion edge region to hold the lateral nail edge of the nail or a lateral edge of a nail tip.