Needleless Skin Filler Injection Device with Negative Pressure and Vibration
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Solution Overview
Problem
Existing needleless injectors in the beauty industry fail to provide precise quantitative injection and accurate site location under the dermis, leading to suboptimal permeation of liquids and user experience due to inadequate pain relief.
Innovation Solution
A needleless skin deep filler injection device featuring a gun body with an injection tube, a negative-pressure freezing structure, and a knock wall-breaking structure that uses low-frequency vibration to facilitate precise injection and pain relief by forming a negative pressure environment and transferring vibrations to the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If needleless injection is used to reduce pain, then patient comfort is improved, but injection precision and quantitative control deteriorate
Solution Approach 1:
The patent applies mechanical vibration through a vibration module that generates low-frequency vibrations (20-100Hz) to facilitate liquid permeation into subcutaneous tissues. The vibration module includes an eccentric rotating mass that converts rotational motion into vibrational motion, enabling precise quantitative injection while maintaining needleless delivery benefits
Solution Approach 2:
The patent uses a negative pressure freezing structure that creates negative pressure (vacuum) at the injection site to enhance liquid absorption and permeation. The structure includes a vacuum chamber and vacuum pump that generate negative pressure to draw the liquid into the subcutaneous tissue, improving injection precision without requiring a needle
2Object-affected harmful factors
If prior needleless injectors are used, then injection pain is reduced to some extent, but accurate site location under dermis cannot be achieved
Solution Approach 1:
The vibration module generates low-frequency vibrations (20-100Hz) that facilitate precise localization of the injection site under the dermis. The vibrations help the liquid penetrate accurately to the target depth while maintaining the pain-reducing benefits of needleless injection
Solution Approach 2:
The patent replaces the conventional mechanical needle penetration system with a combination of negative pressure and vibration mechanisms. This substitution allows for accurate site location and controlled liquid delivery without the pain and tissue damage associated with needle insertion
3Object-affected harmful factors
If prior needleless injectors are used, then injection pain is reduced to some extent, but quantitative injection cannot be realized
Solution Approach 1:
The negative pressure freezing structure creates a controlled vacuum environment that enables precise quantitative injection. By regulating the negative pressure level and duration, the system can control the exact amount of liquid delivered to the subcutaneous tissue while maintaining painless needleless delivery
Solution Approach 2:
The patent incorporates a control module that monitors and regulates the negative pressure and vibration parameters to achieve precise quantitative injection. The control module adjusts the vacuum pump operation and vibration frequency based on feedback signals, ensuring accurate liquid delivery quantity while maintaining patient comfort
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 device enables accurate and quantitative injection, improving the beauty effect and user experience by relieving injection pain and ensuring precise liquid permeation under the dermis.
Implementation Method 1
a negative-pressure freezing structure sleeved on a front end of the injection tube and configured to form a negative pressure between an injection port of the injection tube and a human skin for cooling
Implementation Method 2
a knock wall-breaking structure provided in the accommodating cavity, connected to a wall of the injection tube, and configured to transfer low-frequency vibration to the human skin through the injection tube and the negative-pressure freezing structure
Implementation Method 3
This accurately locks and locates sites below dermis, and facilitates permeation of the liquid to realize quantitative injection of the liquid
Data Source
AI summary
A needleless skin deep filler injection device includes: a gun body, where an accommodating cavity is provided in the gun body; an injection tube provided at a front end of the gun body and configured to store a to-be-injected liquid; an injection driving structure provided in the accommodating cavity, connected to the injection tube through a liquid pushing rod, and configured to inject the to-be-injected liquid in the injection tube; a negative-pressure freezing structure sleeved on a front end of the injection tube and configured to form a negative pressure between an injection port of the injection tube and a human skin for cooling; and a knock wall-breaking structure provided in the accommodating cavity, connected to a wall of the injection tube, and configured to transfer low-frequency vibration to the human skin through the injection tube and the negative-pressure freezing structure.