Needle Assembly With Inclined Fixing Surfaces for Stable Skin Stimulation
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Solution Overview
Problem
Existing skin stimulators using chemical curing agents for needle fixation are hazardous and inefficient, leading to safety concerns and reduced productivity, while mechanical fixation methods result in needle displacement during use.
Innovation Solution
A needle assembly with a fixing member featuring inclined surfaces supports the needles without chemical curing, ensuring secure fixation and improved manufacturing efficiency, and a skin stimulator incorporating this assembly with a handle and electrode unit for enhanced substance absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical curing agents are used to fix needles to the main body, then the needles are firmly fixed, but workers are exposed to harmful substances and productivity decreases due to curing time
Solution Approach 1:
The patent removes the chemical curing agent from the needle fixing process entirely. Instead, it uses a mechanical fixing structure where the main body has through-holes that receive needles, and a fixing member with inclined surfaces mechanically secures the needles without any chemical adhesives, thereby eliminating worker exposure to harmful substances.
Solution Approach 2:
The patent replaces the chemical bonding system (adhesive curing) with a mechanical fixing system. The fixing member features inclined surfaces that press against the needles, and the main body provides through-holes for needle insertion, creating a purely mechanical attachment method that eliminates curing time and harmful chemicals.
2Reliability
If chemical curing agents are used to fix needles, then needles are firmly fixed, but manufacturing time increases due to curing time
Solution Approach 1:
The patent extracts the curing step from the manufacturing process by eliminating chemical adhesives. The mechanical fixing structure allows needles to be secured through simple insertion and pressing operations, removing the time-consuming curing phase entirely and enabling immediate subsequent manufacturing steps.
Solution Approach 2:
The patent substitutes the time-dependent chemical curing process with an instantaneous mechanical fixing mechanism. The fixing member's inclined surfaces provide immediate mechanical pressure to secure needles upon insertion, eliminating the waiting period required for adhesive curing and thus reducing total manufacturing time.
3Ease of manufacture
If needles are inserted into coupling holes in pillar-shaped protrusions, then they are fixed, but needles are difficult to be completely fixed and may be pushed out or come out during use
Solution Approach 1:
The patent inverts the traditional approach by having the main body provide the through-holes for needle insertion, rather than having needles fit into protrusions. The fixing member then actively presses the needles against the main body from the opposite side, ensuring secure fixation and preventing needle dislodgement during use.
Solution Approach 2:
The patent uses inclined surfaces (curved/angled geometry) on the fixing member instead of straight pillar-shaped protrusions. These inclined surfaces progressively press the needles against the main body when the fixing member is installed, creating a self-tightening effect that ensures complete and secure needle fixation that resists pushing or coming out during use.
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
The solution provides a safer, faster, and more economical manufacturing process with stable needle positioning, reducing environmental hazards and improving substance absorption through micro-channels created by the needles.
Implementation Method 1
a plurality of fixed inclined surfaces supporting the plurality of needles. The plurality of needles may be supported on the plurality of fixed inclined surfaces and bent along the plurality of fixed inclined surfaces.
Data Source
AI summary
Provided is a needle assembly including: a plurality of needles; a main body having a plurality of holes through which the plurality of needles pass in a first direction; and a fixing member coupled to the main body and having a plurality of fixed inclined surfaces supporting the plurality of needles.