Continuous Glucose Monitoring Guide Needle for Low-Resistance Insertion
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Solution Overview
Problem
Conventional continuous glucose monitoring devices cause pain and repulsion during the skin insertion process due to the incision made by the insertion guide needle, which also results in high skin resistance, affecting user convenience and comfort.
Innovation Solution
An insertion guide needle designed with a dot point tip for point-contacting the skin, followed by a structure that enlarges the incised portion in both width and thickness directions, forming an entire incision area for smooth insertion along the incised line, minimizing pain and resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional insertion guide needle with a sharp tip is used to incise the skin, then the insertion function is achieved, but pain and skin resistance increase during the insertion process
Solution Approach 1:
The needle tip is segmented into multiple surfaces (first slanted surface, second slanted surface, third slanted surface) that sequentially incise the skin at different angles and directions. This segmentation allows the incision to be divided into multiple small steps rather than one large cut, reducing pain and resistance while achieving the same insertion function.
Solution Approach 2:
The needle tip transitions from a conventional single-point contact to a multi-surface structure that contacts and incises the skin in multiple dimensions. The first, second, and third slanted surfaces create incisions in different spatial orientations, transforming the insertion process from a linear penetration to a multi-dimensional cutting path that reduces skin resistance.
2Object-affected harmful factors
If a dot point tip structure is used for point-contacting the skin, then initial incision is achieved, but the incision area is insufficient for smooth sensor insertion
Solution Approach 1:
The dot point tip performs the preliminary action of creating an initial incision point and opening pathway in the skin before the main body of the needle passes through. This preliminary incision prepares the tissue pathway, reducing resistance for the subsequent passage of the sensor and needle body.
Solution Approach 2:
The incision process is segmented into two stages: first, the dot point tip creates an initial incision point and opening; second, the multi-surface needle body enlarges and extends this incision into a sufficient pathway. This segmentation allows the incision to be built up progressively rather than requiring a large opening from the start.
Data Source
AI summary
The present disclosure relates to an insertion guide needle for a continuous glucose monitoring system. The insertion guide needle makes an incision in the skin by point-contacting with the skin during a skin insertion process, and allows expanded incision of the skin continuously thereafter. During a process of expanded incision of the skin, the insertion guide needle allows expanded incision continuously and gradually in the width direction and thickness direction. In addition, during the expanded incision process, since the entire incision area is formed by an incision, the insertion guide needle is simply inserted along the incision area after a predetermined insertion section.