Plasma Evaluation Apparatus for Medical Current Separation
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Solution Overview
Problem
Current systems fail to easily measure and evaluate the current flowing through a living body during medical plasma treatments, making it difficult to ensure safety and monitor the plasma state effectively, especially in medical settings where operability, hygiene, and compactness are crucial.
Innovation Solution
A plasma evaluation system that includes a treatment target material connected to a weak current measurement unit with a resistor unit and differential amplifier, allowing for precise measurement of currents using variable resistors and optical signal transmission, and optionally employing Rogowski coils or current transformers to separate the current flowing through a living body from the plasma equipment's current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional current measurement methods (resistors, voltage measurement, Rogowski coil, current transformer) are used, then current can be measured in general circuits, but it is difficult to measure the current flowing through a living body during plasma treatment because the current is superposed with the plasma equipment current
Solution Approach 1:
The patent introduces a current injection electrode as an intermediary component. This electrode is specifically designed to inject current into the living body during plasma treatment, allowing the system to measure and separate the current flowing through the living body from the plasma equipment current. The current injection electrode acts as a mediator that enables precise current measurement in the complex environment of plasma treatment without interference from other current paths.
2Adaptability or versatility
If plasma generation electrode is fluctuated to generate non-equilibrium low-temperature plasma under atmospheric pressure, then plasma treatment can be performed, but the current temporally fluctuates at a phase difference from voltage, making it difficult to separate living body current from plasma equipment current
Solution Approach 1:
The patent implements a feedback mechanism through the current injection electrode and measurement unit. The system continuously monitors the current flowing through the living body and provides feedback to control the plasma generation process. This feedback loop allows the system to compensate for temporal fluctuations in current and voltage, maintaining measurement precision even when the plasma generation electrode is fluctuating to create non-equilibrium low-temperature plasma.
3Ease of operation
If evaluation system is made compact and user-friendly for medical settings, then operability and hygiene are improved, but measurement capability and evaluation precision may be compromised
Solution Approach 1:
The patent designs the evaluation system with multi-functionality to maintain both compactness and measurement precision. The current injection electrode serves multiple purposes: it injects current into the living body for treatment, measures current flow through the living body, and provides feedback for plasma control. This universal component allows the system to perform various functions including precise measurement, compact design, and ease of operation in medical settings without compromising measurement precision.
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 accurate and objective evaluation of plasma currents generated by medical treatment equipment, allowing for real-time monitoring and maintenance checks, effectively capturing changes in plasma treatment-induced blood coagulation and ensuring safety by isolating the current flowing through a living body.
Implementation Method 1
measuring a current of a voltage across resistors of the resistor unit through the differential amplifier
Implementation Method 2
transmitting the measurement signal to an external device via an optical fiber
Data Source
AI summary
The present invention provides a plasma evaluation system and method for evaluating plasma, including: a treatment target material and a weak current measurement unit including a resistor unit and a differential amplifier, wherein the treatment target material is connected to the weak current measurement unit via a treatment target side measurement terminal, the resistor unit of the weak current measurement unit is connected to a ground side of a plasma generation current source, and the system and method evaluate plasma by receiving plasma generated by a plasma treatment equipment with the treatment target material, measuring a current by measuring a voltage across resistors of the resistor unit through the differential amplifier, and measuring an output voltage of the plasma generation power source.