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CN-115955755-B - Method for indicating running state of plasma distributed electrode tube for inner wall disinfection

CN115955755BCN 115955755 BCN115955755 BCN 115955755BCN-115955755-B

Abstract

The invention discloses a plasma distributed electrode tube running state indication method for inner wall sterilization, which is applied to a tube inner wall plasma sterilization device based on multi-section distributed electrodes, wherein a measuring capacitor and a voltage measuring sensor for measuring the measuring capacitor are connected in series between each low-voltage electrode of a plasma generation module and a ground level, a discharge indication module is formed by a plurality of measuring capacitors, the voltage sensors for measuring the capacitors, a processor for processing voltage data and an indicator lamp, the capacitance value of the measuring capacitor is far greater than the equivalent capacitance of the electrode of the plasma generation module, the impedance value is far less than the equivalent impedance of the electrode of the plasma generation module, the voltage measuring sensor compares each received measuring voltage with a preset voltage value range after transmitting the acquired voltage value to the processor for processing the voltage data, and the indicator lamp corresponding to the voltage value in the preset range is connected, so that the sterilization effect of the whole device is ensured.

Inventors

  • JIN SHANSHAN
  • LI ZHIBIN
  • JIANG YUNFENG
  • FANG ZHI

Assignees

  • 南京工业大学

Dates

Publication Date
20260505
Application Date
20221208

Claims (3)

  1. 1. The plasma distributed electrode tube running state indication method for inner wall sterilization is applied to a tube inner wall plasma sterilization device based on a multi-section distributed electrode; the device is characterized by comprising a gas control module, a power supply driving module, a plasma generating module and a discharge indicating module; the plasma generating module comprises a quartz glass tube, wherein the inner diameter of the quartz glass tube is larger than the diameter of the tube to be disinfected, the tube to be disinfected can penetrate through the quartz glass tube, a plurality of high-voltage electrodes and low-voltage electrodes which are distributed at intervals for a preset distance outside the quartz glass tube are arranged, a plasma high-voltage electric field is formed between the adjacent high-voltage electrodes and low-voltage electrodes, the high-voltage electrodes and the low-voltage electrodes are connected to the power driving module to realize the driving of the plasma electric field, a measuring capacitor and a voltage measuring sensor for measuring the measuring capacitor are connected in series between each low-voltage electrode and the ground level, a discharge indicating module is formed by the measuring capacitor, the voltage sensor for measuring the voltage capacitor, a processor for processing voltage data, the equivalent capacitance value of the measuring capacitor is far larger than the equivalent capacitance of the electrode of the plasma generating module, the impedance value is far smaller than the equivalent impedance of the electrode of the generating module, the voltage sensor is used for comparing the voltage value of the measuring capacitor with the voltage value of the voltage sensor for processing the voltage data of the measuring capacitor, the voltage sensor is used for processing the voltage data of the voltage sensor to the receiving range, the indicator lamp corresponding to the voltage value within the preset range is turned on, and the indicator lamp corresponding to the voltage value which does not reach the preset range is turned off.
  2. 2. The method for indicating the operation state of a plasma distributed electrode tube for inner wall sterilization according to claim 1, wherein the high-voltage electrode and the low-voltage electrode are annular electrodes and are sleeved on the outer wall of the quartz glass tube at intervals.
  3. 3. The method for indicating the operation state of the plasma distributed electrode tube for inner wall sterilization according to claim 1, wherein the discharge indicating module further comprises a display device, and the display device displays the voltages at two ends of each measuring capacitor after being processed by the voltage data processing processor.

Description

Method for indicating running state of plasma distributed electrode tube for inner wall disinfection Technical Field The invention relates to the technical field of high-voltage plasmas, in particular to a plasma distributed electrode tube running state indicating method for inner wall sterilization. Background In daily life, the inner wall of a slender tube is disinfected, such as a gastroscope, which is a slender tube with a black plastic wrapped with light-guiding fiber, and the front end of the slender tube is provided with an endoscope, the endoscope extends into the esophagus, stomach and duodenum of a tested person from the mouth, and the intense light emitted by a light source can turn the light through the light-guiding fiber, so that a doctor can clearly observe the health condition of each part in the upper digestive tract from the other end. If necessary, the small hole on the gastroscope can be inserted into the clip for slicing examination. Thus sterilization and disinfection of the elongated tube of the hollow portion of the gastroscope is a difficult task. Because the gastroscope is expensive and belongs to a device without damp and heat resistance, the disinfection and sterilization method is limited, and the development of clinical application is greatly limited. The methods widely used for sterilizing the gastroscope nowadays are a hydrogen peroxide plasma sterilization method, an ethylene oxide sterilization method, a glutaraldehyde sterilization solution soaking method and the like. The ethylene oxide belongs to toxic gas, which is easy to cause toxic substance residue and endanger human health, the hydrogen peroxide plasma method adopts a vacuum cavity, equipment is expensive, the use method is complex, the treatment time is long, the glutaraldehyde disinfectant soaking method is commonly used in medical treatment, but the disinfection time is longer, and the efficiency is lower. In terms of the current application effect, the method has limited killing capability on partial pathogens, risks of cross infection, and harmful residues and damages to the gastroscopic material. The plasma can generate an electric field, electric current, UV radiation, various charged particles, free radicals and other active particles, and can cause the pathogen to rapidly necrose or die. The endoscope can adopt a sectional electrode structure aiming at the shape of the endoscope, and plasma jet discharge is generated on the inner wall of the endoscope pipeline, so that the effective sterilization and disinfection treatment of plasma on the inner wall of the stomach endoscope is realized. However, the gastroscope tube is a long and thin tube with the diameter of about one centimeter and the black plastic wrapped with the light guide fiber, and the tube is opaque, so that whether plasma discharge is generated in the tube cannot be accurately judged, and therefore, whether the plasma is used for disinfecting the inner wall of the tube cannot be judged, and difficulty and inconvenience are brought to practical application. The prior art publication No. CN103585650A discloses a low-temperature plasma endoscope disinfection device and a method, the device comprises a gas control module, a power supply excitation module and a plasma generation module, the gas control module controls rare gas and strong active doping gas through a flow controller to realize adjustable gas proportion and flow rate, the power supply excitation module utilizes a sine or pulse high-voltage power supply to provide stable excitation for the plasma generation module, and the plasma generation module utilizes mixed gas mainly comprising rare gas to generate atmospheric pressure cold plasma jet flow through an electrode structure with a sectional gap. The device can generate uniform, stable, normal-temperature and strong-activity plasma jet with the length of 1cm to 2m and the diameter of 0.2mm to 10mm under the atmospheric pressure, and is suitable for the disinfection treatment of endoscopes with different sizes. Based on the multi-segment electrode structure, the invention provides a multi-segment electrode plasma discharge indication method, namely, by adopting simple and measurable electrical parameter measurement, whether discharge plasma and working state occur in the opaque gastroscope pipeline can be accurately and effectively indicated. Disclosure of Invention 1. The technical problems to be solved are as follows: According to the technical problem, the invention provides the plasma distributed electrode tube running state indication method for inner wall sterilization, the sterilization device is based on a multi-section electrode structure, generates plasma jet flow to sterilize and disinfect the slender inner wall of a tube, and adds a discharge indication function, so that when the transparent or opaque slender inner wall of the tube is treated, whether plasma discharge is generated inside the tube or not and whether the disc