Skin Incision Instrument with Adaptive Skin Expander
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Solution Overview
Problem
Conventional skin incision methods struggle to form microscale incision portions with varying directions, such as straight, curved, or wavy lines, often causing the skin to expand in a direction that closes rather than opens the incision, leading to inefficient blood collection.
Innovation Solution
A skin incision instrument comprising a holder, needle, needle drive unit, and multiple skin expander sets, where a reader determines the direction of the incision portion and adjusts the angle of the skin expander sets to expand the skin efficiently, allowing for precise formation of incision portions regardless of their direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional needle puncture is used to form incision portions, then the incision can be made with simple structure, but the incision portion cannot be properly formed when the direction varies (straight, curved, wavy lines) and the skin expands in a direction that closes the incision
Solution Approach 1:
The skin expander set is designed with rotatable configuration to dynamically adjust its expansion direction according to the incision direction. The reader detects the incision direction and the system automatically orients the skin expander set perpendicular to the incision direction, enabling adaptive response to varying incision geometries (straight, curved, wavy lines) while maintaining simple operational complexity
Solution Approach 2:
The patent replaces manual mechanical orientation with an automated optical detection system. A reader (optical sensor) detects the incision direction and a controller automatically orients the skin expander set, substituting complex manual mechanical alignment with simpler automated optical-mechanical integration
2Productivity
If the skin expander set orientation is not adjusted according to incision direction, then the device operation is simple, but the skin expands in a direction that closes rather than opens the incision portion
Solution Approach 1:
The system performs self-oriented adjustment through automated detection and control. The reader automatically detects incision direction and the controller automatically orients the skin expander set perpendicular to the incision direction, enabling the device to self-adjust without requiring manual intervention while maintaining operational simplicity
Solution Approach 2:
The patent implements a feedback loop where the reader continuously monitors incision direction and provides real-time orientation adjustment of the skin expander set. This closed-loop feedback ensures the skin expands in the optimal direction (perpendicular to incision) to maximize blood collection efficiency
Data Source
AI summary
Provided are skin incision instrument to efficiently incise minimal portions and a method for incising skin with the skin incision instrument. The skin incision instrument according to the present invention comprises a holder, a needle, a needle drive unit, two or more skin expander sets, and a reader, wherein the skin expander sets comprise a first skin expander and a second skin expander; the first skin expander and the second skin expander are capable of expanding skin at both sides of the linear incision portion away from the linear incision portion and expanding the linear incision portion in a direction to expand the linear incision portion; and, minimal portions are efficiently incised by selecting a single skin expander set from two or more of the skin expander set based on the direction of the linear incision portion, such that an angle is adjusted to 45 degrees or more and 90 degrees or less wherein the angle is formed by the direction of the linear incision portion read by the reader and the direction to expand the skin by the single skin expander set.