Tattoo Device Operating Rod With Optical Scale For Needle Depth Control
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Solution Overview
Problem
Existing tattoo tools lack precise control over the depth that the metal needle filament projects out of the tool and the depth it reaches in the skin, leading to errors in tattoo placement and retention time of the pigment.
Innovation Solution
The introduction of an operating rod for a tattoo device, which includes a drive mechanism, a first rod body with a receiving cavity and fastening portion, and a second rod body connected in a sleeved manner with a second fastening portion, allowing for accurate adjustment and control of the injection needle's depth and projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the tattoo tool uses a metal needle filament with adjustable projection length, then the tattooist can control the needle depth, but the adjustment accuracy is poor due to naked eye observation and experience-based estimation
Solution Approach 1:
The patent replaces the mechanical adjustment method (relying on naked eye observation and experience) with an optical measurement system. The optical scale and reading mechanism enable precise measurement of needle projection length, eliminating the need for manual estimation and improving measurement accuracy significantly.
Solution Approach 2:
The patent introduces an optical scale as an intermediary between the needle and the observer. This optical scale provides a visual reference that allows accurate measurement of needle projection length without direct contact or manual estimation, serving as a mediator that bridges the gap between the needle position and the observer's perception.
2Productivity
If the tattooist adjusts needle projection length manually during high-speed needle extension and retraction, then the tattoo process can proceed, but the adjustment error rate increases due to difficulty in precise control
Solution Approach 1:
The patent replaces manual mechanical adjustment with an optical measurement and control system. The optical scale allows the tattooist to accurately determine needle projection length even during high-speed operation, maintaining both productivity and precision by providing visual feedback that guides accurate needle depth control.
Solution Approach 2:
The patent introduces optical feedback to the tattooing process. The optical scale provides real-time visual information about needle projection length, allowing the tattooist to adjust needle depth accurately during high-speed operation. This feedback mechanism enables simultaneous maintenance of high productivity and high precision.
3Reliability
If the tattoo tool lacks accurate needle depth control, then the structure remains simple, but the pigment retention time varies and tattoo accuracy decreases
Solution Approach 1:
The patent replaces unreliable mechanical estimation with an optical measurement system. This optical system provides accurate and consistent needle depth measurement, ensuring uniform pigment placement depth and thereby improving pigment retention consistency. The optical scale serves as a reliable reference that maintains measurement accuracy throughout the tattooing process.
Solution Approach 2:
The patent changes the measurement parameter from subjective visual estimation to objective optical measurement. By using the optical scale, the system transforms the needle projection length from a poorly controlled parameter to a precisely measurable parameter, thereby improving the reliability of pigment retention while adding minimal complexity to the device structure.
Data Source
AI summary
An operating rod for a tattoo device includes: a drive mechanism, configured to drive an injection needle of the tattoo device to move; a first rod body, having a receiving cavity and a first fastening portion, wherein the receiving cavity is configured to receive the drive mechanism, and the first fastening portion is configured to fastened with the injection needle; and a second rod body, connected to at least part of the first rod body in a sleeved manner and configured with a second fastening portion, wherein the second fastening portion is configured to connect to the injection needle.