Multi-Needle Assembly with Rotatable Depth Adjustment
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Solution Overview
Problem
Current multi-needle assemblies for cosmetic procedures face challenges such as pain due to inconsistent needle penetration depth and irregular medication injection, as practitioners often rely on intuition, leading to inaccurate needle placement and potential skin movement during treatment.
Innovation Solution
A multi-needle assembly with a central hub and suction cap that allows for precise adjustment of needle depth through a rotatable adjusting portion with scale markings, enabling easy manipulation and confirmation of the desired exposure length without the need for separate measurement tools, while preventing accidental rotation and damage to needles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single suction adaptor is used, then the device structure is simple, but the needle exposure length cannot be adjusted
Solution Approach 1:
The patent implements a dynamic adjustment mechanism where the central hub can rotate relative to the suction adaptor body along a circular trajectory. This rotational movement dynamically changes the needle exposure length, allowing the device to adapt to different treatment requirements while maintaining a single adaptor structure.
Solution Approach 2:
The device is segmented into distinct functional components: the suction adaptor body, the rotatable central hub, the needle assembly, and the scale markings. This segmentation allows independent adjustment of the central hub position while maintaining the integrity of the overall device structure.
2Adaptability or versatility
If multiple suction adaptors with different sizes are used to adjust needle exposure, then the needle exposure length can be adjusted, but the device complexity increases and requires replacement of adaptors
Solution Approach 1:
Instead of using multiple static adaptors of different sizes, the patent employs a single adaptor with a dynamic rotational adjustment mechanism. The central hub rotates to change needle exposure length, eliminating the need to replace adaptors and simplifying the operation to a simple rotational movement with visual feedback from scale markings.
3Adaptability or versatility
If the central hub is rotatable for adjustment, then the needle exposure length can be adjusted, but accidental rotation may damage the needles
Solution Approach 1:
The patent applies preliminary protective measures by designing the needle assembly to be removable from the central hub. This allows the needles to be installed or removed only when necessary, and the removable connection prevents accidental rotation damage by allowing the needle assembly to be detached and reinstalled as needed, while still enabling intentional adjustment when needles are properly secured.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates accurate and convenient adjustment of needle depth, ensuring stable operation and preventing needle damage, allowing for precise control of needle exposure length during cosmetic procedures.
Implementation Method 1
a suction cap surrounding one side of the needles and the central hub, being in close contact with the central hub
Implementation Method 2
an adjusting portion rotatably connected to a rear end of the suction cap, being screw engaged with an edge of one side of the central hub to move the central hub with respect to the suction cap according to a direction of rotation
Data Source
AI summary
A multi-needle assembly according to the present invention includes: a plurality of needles; a central hub for supporting the needles with the front part of the needles exposed and the rear part thereof fixedly surrounded; a suction cap with the front having needle penetration holes for receiving the needles, the suction cap surrounding the needles and in a sealed manner one side of the central hub; and an adjustment part rotatably connected to the rear end of the suction cap and screwed around one side of the central hub for moving the central hub forward or backward with regard to the suction cap by rotation so as to adjust the length of exposure of the needles, wherein the adjustment part has one side inscribed with continuous numbers or a scale around. Thus the exposed length of the needles may be easily adjusted and confirmed as being desired, so that easy treatment is possible without an additional means for confirming.