Needle Tip Segmentation for Targeted Drug Depth
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Solution Overview
Problem
Conventional needle insertion methods for drug delivery into the skin require deeper penetration, leading to unnecessary skin injury due to excess tissue interference, and low skin absorption rates due to difficulty in penetrating the stratum corneum.
Innovation Solution
A needle design featuring a cutting part and inclined parts at the tip, allowing precise insertion to the targeted depth with minimized tissue damage, along with a needle tip that includes a drug passage, adapter, cap, and power supply for enhanced control and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional needle with a single inclined cut is used for drug injection, then the needle can penetrate the skin, but the needle must be inserted to a depth deeper than the targeted depth to avoid tissue interference, causing unnecessary skin injury
Solution Approach 1:
The needle tip is divided into multiple segments: a cutting part with multiple cutting edges for precise tissue separation, and a pair of inclined parts with drug discharge holes positioned at different locations. This segmentation allows the needle to create a precise pathway to the targeted depth while minimizing unnecessary tissue injury through controlled cutting action.
Solution Approach 2:
Different parts of the needle tip have specialized functions: the cutting part is designed for precise tissue cutting at the targeted depth, while the inclined parts with drug discharge holes are positioned to deliver medication locally at specific depths. This local quality optimization ensures that each portion of the needle performs its specific function efficiently, reducing overall tissue trauma.
2Measurement precision
If a conventional needle is inserted to deliver a drug to a targeted depth, then the drug can be injected, but the needle must penetrate deeper than necessary due to tissue interference, increasing insertion depth
Solution Approach 1:
The cutting part with multiple cutting edges performs preliminary tissue separation before the drug discharge holes reach the targeted depth. This preliminary cutting action creates a clear pathway, allowing the needle to stop precisely at the targeted depth without needing to penetrate deeper to overcome tissue interference, thereby reducing overall insertion depth.
Solution Approach 2:
The needle design transitions from a single inclined cut to a three-dimensional structure with a cutting part and multiple inclined parts positioned at different angles and depths. This dimensional change allows simultaneous cutting and drug delivery at multiple depths, improving depth accuracy while reducing the maximum insertion depth required.
3Productivity
If a conventional needle with a single inclined cut is used, then the structure is simple, but the needle cannot efficiently deliver drug to the targeted depth without excessive insertion
Solution Approach 1:
The needle tip structure integrates multiple functions into a single component: the cutting part performs tissue cutting, while the inclined parts with drug discharge holes perform medication delivery. This multi-functionality increases drug delivery efficiency by simultaneously enabling precise tissue penetration and targeted drug release without requiring separate devices, thus improving productivity without proportionally increasing complexity.
Solution Approach 2:
The cutting part and inclined parts with drug discharge holes are merged into a single integrated needle tip structure. This merging allows the needle to perform both cutting and drug delivery functions in one insertion, improving productivity by eliminating the need for separate操作步骤, while the integrated design keeps the overall structure manageable rather than overly complex.
Data Source
AI summary
Disclosed are a needle that may inject a drug in communication with a targeted depth of a target while minimizing a depth, by which the needle is inserted into the target when the drug is injected to the targeted depth of the target through the needle, whereby an unnecessary injury may be prevented from occurring as an unnecessary portion is inserted into the target, and a needle tip including the same.