Hand-type Microwave Plasma Generator for Low Power Medical Use
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Solution Overview
Problem
Conventional plasma generators face challenges in initiating plasma at low power for medical wound treatment and cell treatment due to the need for high voltage, which complicates insulation and can result in side effects from fluorine and chlorine, and are difficult to miniaturize for applications like endoscopes.
Innovation Solution
A hand-type low temperature microwave plasma generator is designed with a handpiece housing, microwave electrode tip, gas distribution member, mounting housing, and an ignition module that applies a high voltage pulse electric field to initiate plasma discharge at low power, ensuring stability and ease of use, including an opposite position detection module for safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high voltage is applied to generate plasma, then plasma generation is achieved, but insulation becomes difficult and side effects occur
Solution Approach 1:
The patent replaces the conventional high voltage electrode-based plasma generation system with a microwave-based plasma generation system. The microwave generator (200W-500W) couples energy to the plasma through a magnetic field, eliminating the need for high voltage insulation components and complex electrode structures while maintaining reliable plasma generation.
Solution Approach 2:
The patent changes the operating parameters from high voltage (kilovolt range) to microwave frequency (2.45 GHz) with low power (200W-500W). This parameter transformation allows plasma generation without requiring complex insulation systems, as microwaves can be contained and controlled through simpler waveguide and resonant cavity structures.
2Reliability
If high voltage is used for plasma generation, then plasma is produced, but miniaturization becomes difficult
Solution Approach 1:
The patent substitutes the bulky high voltage transformation and insulation infrastructure with a compact microwave generation system. The microwave generator and resonant cavity can be miniaturized to handpiece size while maintaining plasma production capability, enabling portable medical devices.
3Reliability
If conventional plasma generation is used, then plasma is generated, but control of plasma emission is difficult
Solution Approach 1:
The patent implements dynamic control of plasma emission through real-time adjustment of microwave power (200W-500W range) and gas flow rate. The controller monitors plasma characteristics and adjusts these parameters to maintain stable, controllable plasma emission suitable for medical applications, eliminating the difficulty of controlling plasma dosage.
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 generator effectively produces plasma at low power, eliminating the need for high voltage, enhancing stability and usability, and enabling easy application to small devices like medical treatment tools, promoting miniaturization and safe operation.
Implementation Method 1
an ignition module configured to apply a high voltage pulse electric field to a lower portion of the microwave electrode tip
Implementation Method 2
to initiate an initial plasma discharge
Implementation Method 3
a microwave electrode tip configured to be connected to a microwave generator (M/G)
Data Source
AI summary
Provided is a hand-type low temperature microwave plasma generator that is configured to implement plasma even in a low power state, and be easily applied to various small devices using microwave plasma including medical treatment and the like of wound treatment or cell treatment.