CN103212096A - Dielectric barrier discharge plasma device for disinfecting catheter - Google Patents
Dielectric barrier discharge plasma device for disinfecting catheter Download PDFInfo
- Publication number
- CN103212096A CN103212096A CN2012104181134A CN201210418113A CN103212096A CN 103212096 A CN103212096 A CN 103212096A CN 2012104181134 A CN2012104181134 A CN 2012104181134A CN 201210418113 A CN201210418113 A CN 201210418113A CN 103212096 A CN103212096 A CN 103212096A
- Authority
- CN
- China
- Prior art keywords
- catheter
- plasma
- internal layer
- electrode
- disinfecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Materials For Medical Uses (AREA)
Abstract
The invention relates to a dielectric barrier discharge plasma device for disinfecting a catheter. In the invention, a high voltage electrode is arranged on an external wall of an external layer pipe, and the catheter to be disinfected is arranged on an internal layer. Because the high voltage electrode is directly contacted with the wall of the external layer pipe, heat effect on catheter wall of internal layer, and high voltage breakdown can be effectively avoided. In the invention, plasma is excited in the external layer pipe, and because of an electron avalanche effect of the plasma, gases in the internal layer catheter are simultaneously excited, thereby reaching a purpose for disinfecting the internal and external walls of the catheter. The invention not only can be used for disinfecting the catheter, but also can used for disinfecting any tubular and thermolabile medical materials, and an application range is greatly expanded.
Description
Technical field
The invention belongs to plasma producing apparatus, be specifically related to a kind of catheter disinfectant dielectric barrier discharge plasma apparatus that is used for.
Background technology
Plasma is material the 4th attitude after solid-state, liquid, gaseous state, and when applied voltage reached the firing voltage of gas, gas molecule was breakdown, produces the mixture that comprises electronics, various ion, atom and free radical.Plasma can be divided into different classifications: by the thermodynamical equilibrium classification, plasma can be divided into thermal balance plasma and nonthermal plasma; Press the system temperature classification, plasma is divided into low temperature plasma and high-temperature plasma.The temperature of all particles is all the same in the thermal balance plasma, shows as high-temperature plasma on the macroscopic view.In nonthermal plasma, the temperature of electronics can be up to tens thousand of degree, and the temperature of ion and neutral particle is much smaller than electron temperature, and whole system presents low temperature state, so be also referred to as low temperature plasma.Low temperature plasma exists a large amount of, miscellaneous active particle, so nonthermal plasma can be used as the high activity reagent utilization in multiple practical applications.The seventies and eighties in 20th century rises, and plasma begins flourish at the applied research to numerous areas such as metal, microelectronics, polymer, Biofunctional materials, low temperature sterilization and pollution controls, forms the research direction of handing over justice to multidisciplinary.
The low temperature plasma generation technique mainly contains: direct current glow discharge, low-frequency ac discharge plasma, high-frequency discharge plasma, non-equilibrium atmosphere pressure discharging, dielectric barrier discharge.Based on these generation techniques, the device of existing generation low temperature plasma mainly contains four kinds, is respectively to exchange low temperature plasma generating means, radio frequency low temperature plasma generating means, microwave low temperature plasma generating means, DC pulse plasma generator.Though the plasma temperature that produces is near room temperature, the high temperature that can produce several thousand degree is thrown away in high-field electrode and tube wall contact position, and therefore, all wrap up with megohmite insulant common plasma producing apparatus outside.
Catheter is the pipeline made from natural rubber, silicone rubber or polrvinyl chloride, can be through per urethram inserting bladder so that drainage of urine goes out rice.The material that is used for urinary catheter has polrvinyl chloride (PVC or plastics), latex and silica gel.It is a hidden danger that catheter generally adopts the carry out disinfection residue problem of these chemical substances of chemical substances such as oxirane always.In addition, after catheter is detained a week in vivo, all bacterial infection will appear in all catheters.According to U.S. disease center, at present, urinary system infection accounts for 40% of nosocomial infection, and wherein about 80% is to be caused by the catheter of keeping somewhere.The pathogenic bacterium that urinary catheter infects are streptococcus, generate the thick biomembrane of one deck on the urinary catheter surface, and these microorganisms of adhering to play an important role in the morbidity that urinary catheter infects.
At the urinary catheter infection problems, existing general the employing used new catheter instead or with the external catheter of iodine disinfection.Disposable catheter has increased patient's burden, can not solve catheter infection problems in the body with the external catheter of iodine disinfection.
Summary of the invention
The invention provides a kind of low temperature plasma generating means, purpose is thoroughly to remove microorganism residual in the catheter, realizes the recycling of catheter.
Sterilization mode of the present invention is easy, quick, only needs 3-5min, and no chemical toxicity material is residual; When the present invention worked, high pressure and ground electrode were added on the outer protection tube, and the gas in the ectonexine pipe all is excited, and reaches simultaneously to catheter inside and outside wall disinfectant purpose.
A kind of catheter decontaminating apparatus of the present invention comprises the working gas source, flow controller, the outer protection tube, internal layer catheter, is used for cap nut, high-field electrode, ground electrode, power supply that inner and outer pipes connects.It is characterized in that: described high-field electrode and ground electrode all are connected on the outer wall, have effectively avoided the damage of the heat effect of electrode generation to inner tube; Because plasma can produce simultaneously at the inside and outside wall of inner tube, therefore, the inside and outside wall of inner tube can carry out disinfection simultaneously.
A kind of catheter decontaminating apparatus of the present invention is double-layer sleeve structure, and outer tube plays a protective role, and inner tube is a catheter to be sterilized.
A kind of catheter decontaminating apparatus of the present invention is the bipolar electrode structure, and high-field electrode and ground electrode all are added on the outer tube outer wall, and inner tube is played a protective role.
A kind of catheter decontaminating apparatus of the present invention, the gas of inner tube inside and outside wall all can be excited, and internal and external walls can carry out disinfection simultaneously.
A kind of catheter decontaminating apparatus of the present invention, outer tube are heat-stable insulating properties material such as Teflon, politef, glass, insulating properties materials such as pottery; The selection of inner tube is not subjected to the restriction of temperature, except that above-mentioned different materials, also can select materials such as rubber, silica gel.
A kind of catheter decontaminating apparatus of the present invention, described power supply is alternating current power supply, the pulse power or radio-frequency power supply.
A kind of catheter decontaminating apparatus of the present invention, described gas source is simple substance rare gas or mists such as helium, fluorine gas.The gas flow that enters in the pipe can be by the control of adjustments of gas flow calorimeter rice.
A kind of catheter decontaminating apparatus of the present invention, the intensity of plasma generation can be done different choice as requested.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the sectional view of ectonexine pipe among Fig. 1 of the present invention;
The specific embodiment
Below the present invention is described in detail with reference to the accompanying drawings.
Fig. 1 is a structural representation of the present invention.Comprise gas source 1, gas flow controller 2, excited gas 3, hold-down nut 4, the outer protection tube 5, internal layer catheter 6, high-field electrode 7, ground electrode 8, working power 9.The outer protection tube 5 is connected by hold-down nut 4 with internal layer catheter 6, and the hold-down nut end of the outer protection tube 5 and internal layer catheter 6 is simultaneously also as gas input port, and the other end does not seal, and is the plasma ejiction opening.High-field electrode 7 is connected with earth terminal with the high pressure of working power 9 respectively with ground electrode 8.
High-field electrode 7 is annular electrode with ground electrode 8, is close to outer wall, and annular electrode can use conductive materials such as Copper Foil, aluminium foil, tinfoil paper.
The internal diameter of the outer protection tube 5 is a bit larger tham the external diameter of internal layer catheter 6, and certain space is arranged between the two.Outer tube can be a Teflon, politef, glass, pottery, insulating properties materials such as quartz; The range of choice of inner tube is more wide in range, except that above-mentioned different materials, also can select thermo-labile materials such as rubber, silica gel.
With the simple substance helium is example, and adjustments of gas flow control switch 2 feeds working gas 3 with 2 liters/minute flows, and gas will be full of the inside and outside wall of internal layer catheter 6.Behind the power connection, the inside and outside wall of internal layer catheter 6 all is full of the purple plasma flame.When power supply 9 was alternating current power supply, applying the alternating voltage amplitude can be 5 kilovolts-30 kilovolts, frequency 10 KHz-20 megahertz.
Fig. 2 is the outer protection tube 5, and the sectional view of internal layer catheter 6 is depicted as protecting tube 5 and is positioned at skin, and catheter 6 is positioned at internal layer, and certain space is arranged between the two.Outer conducting shell protecting tube 5 all can be adjusted as required with the length and the diameter of internal layer catheter 6.
Claims (3)
1. one kind is used for catheter disinfectant plasma producing apparatus, comprise gas source, gas flow controller, power supply, hold-down nut, electrode, ectonexine medium tube, working power, it is characterized in that: high-field electrode and ground electrode all are connected on the outer media tube wall, have effectively avoided the damage of the heat effect of electrode generation to internal layer catheter tube wall; Because plasma can produce simultaneously at the inside and outside wall of internal layer catheter, therefore, the catheter inside and outside wall of internal layer can carry out disinfection simultaneously.
2. as right 1 described a kind of catheter disinfectant plasma producing apparatus that is used for, outer media pipe and internal layer catheter are fixed by nut, and annular electrode is positioned on the outer media pipe.
3. a kind of catheter disinfectant plasma producing apparatus that is used for as claimed in claim 1, described power supply is alternating current power supply, the pulse power or radio-frequency power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104181134A CN103212096A (en) | 2012-10-29 | 2012-10-29 | Dielectric barrier discharge plasma device for disinfecting catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104181134A CN103212096A (en) | 2012-10-29 | 2012-10-29 | Dielectric barrier discharge plasma device for disinfecting catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103212096A true CN103212096A (en) | 2013-07-24 |
Family
ID=48810469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104181134A Pending CN103212096A (en) | 2012-10-29 | 2012-10-29 | Dielectric barrier discharge plasma device for disinfecting catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103212096A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019180703A1 (en) * | 2018-03-18 | 2019-09-26 | Nova Plasma Ltd. | Method and apparatus for pre-treating a catheter |
| CN110572924A (en) * | 2019-08-15 | 2019-12-13 | 大连理工大学 | Plasma system for rolling fruit and vegetable surface microorganism control |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012053083A1 (en) * | 2010-10-21 | 2012-04-26 | 株式会社日立製作所 | Plasma sterilization appartus, plasma sterilization system and plasma sterilization method |
-
2012
- 2012-10-29 CN CN2012104181134A patent/CN103212096A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012053083A1 (en) * | 2010-10-21 | 2012-04-26 | 株式会社日立製作所 | Plasma sterilization appartus, plasma sterilization system and plasma sterilization method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019180703A1 (en) * | 2018-03-18 | 2019-09-26 | Nova Plasma Ltd. | Method and apparatus for pre-treating a catheter |
| CN110572924A (en) * | 2019-08-15 | 2019-12-13 | 大连理工大学 | Plasma system for rolling fruit and vegetable surface microorganism control |
| CN110572924B (en) * | 2019-08-15 | 2021-12-03 | 大连理工大学 | Plasma system for rolling fruit and vegetable surface microorganism control |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104013985B (en) | Portable micro-plasma sterilizer | |
| CN102595757B (en) | Three-electrode discharge device for generating large-volume atmosphere pressure plasma | |
| CN201643445U (en) | Contact-type plasma discharger | |
| WO2016127531A1 (en) | Apparatus for disinfecting and sterilizing surface of endoscope through plasma | |
| EP2174671B1 (en) | Plasma sterilizing device and method | |
| CN109121278A (en) | A kind of plasma-activated oil treatment provisions | |
| CN103656857B (en) | A kind of Portable low-temp plasma sterilization, beauty appliance | |
| CN104623704A (en) | Cavity type normal-pressure and low-temperature plasma disinfecting and sterilizing device | |
| CN104661423A (en) | Large-atmosphere low-temperature plasma fluidic generator | |
| CN103418085A (en) | Cold plasma discharger | |
| CN103945627A (en) | Handheld large-area low-temperature plasma generator | |
| CN206761952U (en) | A kind of atmospheric pressure flexibility cold-plasma jet endoscope sterilization device | |
| CN201020055Y (en) | Parallel connection type low-temperature plasma disinfection device | |
| WO2012058456A2 (en) | Method and apparatus for disinfecting and/or self-sterilizing a stethoscope using plasma energy | |
| CN205142645U (en) | Medical low temperature plasma fluidic device that can hand | |
| CN103220874A (en) | Plasma array based on dielectric barrier discharging | |
| CN103212096A (en) | Dielectric barrier discharge plasma device for disinfecting catheter | |
| CN107183481A (en) | A kind of cold bactericidal reaction device of high-pressure pulse electric, power circuit and control method | |
| CN106693009B (en) | Atmospheric pressure flexible cold plasma jet endoscope sterilization device and method | |
| CN112703034B (en) | Electro-medical device for treatment of blood clots and ulcers and other skin lesions in human and animal patients | |
| CN206381410U (en) | A kind of microplasma sterilization and disinfection device | |
| KR100545569B1 (en) | Apparatus and Method for Sterilization of Medical Equipments, Pharmaceutical Products and Biologically Contaminated Articles | |
| CN205323500U (en) | Single medium blocks low temperature plasma discharge module | |
| KR100949111B1 (en) | Apparatus for generating room temperature plasma at atmospheric pressure | |
| CN103922457A (en) | Plasma discharging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130724 |