Tattoo Needle Substrate Limits Penetration Depth
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Solution Overview
Problem
Existing tattoo tools lack precise control over the depth that the needle pierces into the skin, leading to errors in tattoo placement and retention time of the pigment, which results in inconsistent tattoo quality and potential 'colour fading' issues.
Innovation Solution
The introduction needle features a needle piercing portion with a substrate and a needle tooth, where the needle tooth is fixedly disposed on the substrate, allowing for precise control over the piercing depth and preventing excessive penetration into the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the tattooist adjusts the needle length by naked eyes and experience, then the adjustment process is simple, but the accuracy of needle projection length and piercing depth is poor
Solution Approach 1:
The patent replaces the manual visual adjustment method with an automated positioning mechanism. The substrate provides a mechanical stop that precisely determines the needle projection length, eliminating the need for naked-eye estimation and experience-based adjustment, thereby achieving both ease of operation and high measurement precision.
Solution Approach 2:
The substrate automatically limits the needle depth through its physical structure. When the needle pierces the skin, the substrate abuts against the skin surface, automatically stopping the needle at the correct depth without requiring continuous manual intervention or adjustment, thus achieving precise depth control with minimal operator involvement.
2Duration of action of stationary object
If the needle can penetrate deeply into the skin, then the pigment can be retained longer, but the piercing depth cannot be accurately controlled leading to excessive penetration
Solution Approach 1:
The substrate is pre-configured with a specific height that determines the maximum piercing depth. This preliminary structural design ensures that the needle can only penetrate to the intended depth, preventing excessive penetration while maintaining sufficient depth for pigment retention, thus achieving both long pigment retention time and precise depth control.
Solution Approach 2:
The substrate acts as an intermediary between the needle and the skin. It provides a mechanical interface that limits the needle's penetration depth by abutting against the skin surface, thereby controlling the piercing depth accurately while still allowing sufficient penetration for pigment implantation, resolving the contradiction between deep penetration and precise control.
3Productivity
If the tattooist adjusts needle length while the needle filament is extending and retracting at high speed, then the tattooing process can be maintained, but the adjustment has a large error rate
Solution Approach 1:
The correct needle projection length is predetermined by the substrate height before the tattooing process begins. This eliminates the need for adjustments during high-speed needle extension and retraction, maintaining both productivity and measurement precision since the needle length is already correctly set by the substrate's physical structure.
Solution Approach 2:
The substrate automatically maintains the correct needle projection length throughout the tattooing process without requiring active adjustment. The mechanical stop provided by the substrate ensures consistent needle depth control even during high-speed operation, thereby maintaining both productivity and precision simultaneously.
Data Source
AI summary
An introduction needle includes a needle piercing portion. The needle piercing portion comprises a needle tooth and a substrate; the needle tooth is fixedly disposed on a portion of a first side surface of the substrate; and when the needle tooth pierces into the skin, the remaining portion of the first side surface of the substrate is configured to abut against an outer surface of the skin.