Plasma Treatment Handpiece Voltage Amplification Ozone Reduction
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Solution Overview
Problem
Plasma treatment devices for dermatitis generate harmful gases like ozone, nitrogen dioxide, and nitrogen monoxide, and experience stability issues due to high voltage transmission through cables.
Innovation Solution
A plasma treatment device that amplifies low voltage to high voltage within a handpiece, using argon gas to reduce ozone production and improve stability by controlling the gas flow rate and eliminating high voltage in the cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high voltage is transmitted through the cable to generate plasma, then plasma generation is enabled, but voltage noise and signal instability occur
Solution Approach 1:
The plasma treatment device is divided into a main body and a handpiece, with the voltage amplification function segmented to the handpiece. The main body only supplies low voltage through the cable, while the handpiece contains the amplification circuit that generates the required high voltage for plasma generation. This segmentation isolates the high voltage generation from the cable transmission, eliminating voltage noise and signal instability in the cable.
2Reliability
If atmospheric pressure low temperature plasma is used for skin treatment, then sterilization and cell growth stimulation effects are achieved, but harmful gases such as ozone, nitrogen dioxide, and nitrogen monoxide are generated
Solution Approach 1:
The device changes the operating parameters of plasma generation, specifically using a low voltage (9-10V DC) that is amplified to high voltage at the handpiece, and controlling the argon gas flow rate within specific ranges (4-6 L/min). These parameter changes enable effective plasma generation for skin treatment while minimizing the generation of harmful gases like ozone, nitrogen dioxide, and nitrogen monoxide.
3Reliability
If low voltage is amplified to high voltage within the handpiece, then cable voltage and signal noise are reduced, but device complexity increases
Solution Approach 1:
The device introduces a hybrid cable that combines electrical conductor and gas conduit functions. This intermediary component allows the main body to supply both low voltage and argon gas to the handpiece through a single integrated cable assembly, simplifying the overall system architecture despite the added amplification functionality in the handpiece.
4Object-generated harmful factors
If argon gas flow rate is controlled to reduce ozone production, then harmful gas generation is minimized, but plasma generation efficiency may be affected
Solution Approach 1:
The device optimizes the argon gas flow rate parameter within a specific range (4-6 L/min) that simultaneously achieves two objectives: minimizing the generation of harmful gases like ozone while maintaining sufficient plasma generation efficiency for effective skin treatment. This precise parameter control resolves the contradiction between reducing harmful emissions and maintaining treatment effectiveness.
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 effectively reduces ozone generation and enhances stability, providing effective skin regeneration treatments for atopic dermatitis by inhibiting Th2 cell differentiation and mast cell infiltration, while minimizing noise and manufacturing complexity.
Implementation Method 1
a plasma generating unit for generating plasma by being supplied with the voltage and the gas
Implementation Method 2
the plasma is generated by amplifying a direct current voltage of 9 V to 10 V to an alternating current voltage of 700 V to 900 V at a frequency of 18 kHz to 20 kHz
Data Source
AI summary
The present invention relates to a plasma treatment device, and more particularly, to a plasma treatment device effective in treating atopic dermatitis, which amplifies a low voltage to a high voltage within a handpiece in a plasma generating process to reduce ozone production and improve stability.