Multi-Needle Suction Injector with Spiral Depth Adjustment
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Solution Overview
Problem
Conventional multi-needle assemblies for cosmetic procedures face challenges in achieving uniform medication injection and maintaining skin firmness during multihole therapy, as they often rely on manual intuition and have complex structures that can cause needle misalignment and bending during depth adjustments.
Innovation Solution
A multi-needle assembly with a main body, reciprocating member, and guide suction that uses spiral and slide grooves to adjust the needle depth precisely, maintaining skin tension through suction and allowing for accurate and simple depth adjustment of needle insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the exposure length of needles is fixed in conventional multi-needle assemblies, then the device is convenient to use and requires no adjustment, but the injection depth cannot be changed according to different skin conditions
Solution Approach 1:
The patent implements a dynamic adjustment mechanism where the needle assembly can change its exposure length from fixed to variable. The sliding member moves along the cylindrical body with the help of spiral grooves and elastic members, allowing the needle exposure length to be dynamically adjusted according to different skin conditions while maintaining ease of operation through simple rotational movement
2Manufacturing precision
If the needle exposure length is made adjustable through complicated structures, then the injection depth can be adjusted, but the needles may bend during the adjustment process
Solution Approach 1:
The patent uses spiral grooves (curved pathways) on the cylindrical body that guide the sliding member's movement. This curved guide path ensures that the needle assembly moves smoothly and accurately along a predetermined trajectory, achieving precise depth adjustment while preventing lateral forces that could cause needle bending
Solution Approach 2:
The patent employs elastic members (springs) that change their mechanical parameters (force, position) during the adjustment process. These elastic members provide controlled resistance and guiding forces that ensure accurate needle depth adjustment while preventing excessive lateral movement that could bend the needles
3Productivity
If manual needling operation is performed based on practitioner intuition, then the procedure can be performed without additional devices, but the medication injection is not uniform and skin tension is lost
Solution Approach 1:
The patent implements a self-regulating mechanism where the suction pump automatically maintains skin tension by creating negative pressure. The control unit monitors and adjusts the suction force to keep the skin taut during the entire needling process, eliminating the need for manual skin stretching and ensuring uniform injection depth without requiring complex additional devices
Solution Approach 2:
The patent incorporates a control unit that provides real-time feedback on skin tension and needle depth. The system continuously monitors the suction force and adjusts it to maintain optimal skin tension, ensuring uniform medication injection while preventing skin relaxation that would cause needle misalignment
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
Enables precise and uniform needle depth adjustment, ensuring accurate needle placement and maintaining skin firmness during cosmetic procedures, enhancing treatment effectiveness and reducing the risk of needle misalignment and bending.
Implementation Method 1
the guide suction comprises an opening to be brought into contact with a skin and forms a suction force for sucking in foreign matter from inside
Implementation Method 2
a length adjusting means for moving the reciprocating member in a forward and backward direction along a spiral groove and a slide groove formed in the inner circumferential surface of the main body
Data Source
AI summary
A multi-needle assembly for cosmetic procedure includes a main body having an inner space extending from one end to another, a reciprocating member provided in the main body, a needle member placed into the reciprocating member and having a plurality of needles that enter or exit through the one end of the main body, a guide suction into or from which the plurality of needles enter or exit, and length adjusting grooves for moving the reciprocating member in a forward and backward direction.