Helical Slit Maker for Eyelash Follicle Implantation
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Solution Overview
Problem
Existing methods for replacing eyelashes lack a simple and effective device to create a slit for inserting hair follicles, as previous tools are either too large or not designed for a helical cutting path, making them unsuitable for precise eyelash implantation.
Innovation Solution
A slit maker device with a shaft and a helix mechanism, featuring a beveled tip and angled sections, is designed to create a precise slit in the eyelid for hair follicle insertion, allowing for adjustable angles and a helical cutting path to accommodate the unique anatomy of the eyelid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing tools are used for creating slits in eyelid, then the device structure is simple, but the tool is either too large or not designed for helical cutting path, making it unsuitable for precise eyelash implantation
Solution Approach 1:
The cutting element is designed with a helical geometry that follows a curved path through the eyelid tissue, enabling the tool to create a natural curved slit trajectory that adapts to the eyelid's anatomical structure. The helical cutting edge rotates along a curved axis, providing both precision and adaptability to the specific implantation site.
Solution Approach 2:
The tool incorporates a rotating helical cutting mechanism that dynamically adapts to the tissue resistance during insertion. The rotation allows the cutting edge to progressively engage the tissue, maintaining optimal cutting angles throughout the insertion process, thereby achieving precise slit creation while adapting to varying tissue densities.
2Manufacturing precision
If a helical cutting mechanism is implemented, then the slit creation precision is improved, but the device complexity increases
Solution Approach 1:
The helical cutting mechanism is integrated into a single unified tool body that combines the shaft, helical cutting edge, and handle into one cohesive device. This merging of components achieves precise slit creation through the helical path while avoiding the need for multiple separate tools or complex assembly mechanisms.
Solution Approach 2:
The helical cutting tool is designed to perform multiple functions: it can create slits at various depths, accommodate different insertion angles, and work with different types of hair follicles. The universal design allows the same device to be used across multiple implantation sites and procedures, justifying the increased structural complexity through enhanced versatility.
Data Source
AI summary
A slit maker is configured to make a slit in skin to receive a hair follicle. The slit maker has a shaft, having a shaft central axis. A helix is mechanically coupled to the shaft. A tip is at an end of the helix. An edge is beveled onto the tip being collinear to an edge line. An edge angle is measured from the edge line to the shaft central axis. The edge angle is at least 10 degrees but no more than 60 degrees or least 130 degrees but no more than 170 degrees.