CN201018709Y - Plasma testing apparatus in low temperature plasma disinfection device - Google Patents
Plasma testing apparatus in low temperature plasma disinfection device Download PDFInfo
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- CN201018709Y CN201018709Y CNU2007201041396U CN200720104139U CN201018709Y CN 201018709 Y CN201018709 Y CN 201018709Y CN U2007201041396 U CNU2007201041396 U CN U2007201041396U CN 200720104139 U CN200720104139 U CN 200720104139U CN 201018709 Y CN201018709 Y CN 201018709Y
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Abstract
The utility model relates to a plasma checkout gear in the low-temperature plasma sterilization device. The utility model relates to a sterilization technique. The utility model comprises a metal closed container, a screen mat shaped aerial, a radiofrequency power supply, a radiofrequency electrode, a direct-current power supply, a direct-current electrode, an insulate bear frame, a vacuum system, a vacuum meter, a thermometer, a hydrogen peroxide injection device and a photo sensor. The photo sensor is arranged in the inner part of the metal airtight container and positioned between the inner part of the metal airtight container and the a screen mat shaped aerial. The photo sensor is electrically connected with a comparer, a control device and an actuating device, outside the metal airtight container in sequence through the connecting wire. The actuating device is electrically connected with the radiofrequency power supply, the direct-current power supply, the vacuum system and the hydrogen peroxide refilled. The photo sensor generates an electric signal through the received light intensity which is generated when the plasma is generated between the inner part of the metal airtight container and the screen mat shaped aerial. The electric signal is dispatched to the comparer. The comparer compares the intensity of the electric signal with a threshold level. If the intensity is under the threshold level, the signal is dispatched to drive the direct-current power supply through the control device and the actuating device. The electrical arc is generated. The Plasma is generated through the driving of the radiofrequency power supply.
Description
Technical field:
The utility model relates to low-temperature plasma sterilization technology field, is the checkout gear of low-temperature plasma bactericidal unit ionic medium body, the aura phenomenon checkout gear when particularly having plasma generation.
Background technology:
The plasma sterilization technology was originated the sixties in 20th century, and killing microorganisms research has been carried out in the sterilization of U.S. Menashi article on plasma, and develops plasma sterilizing equipment in nineteen sixty-eight, and is existing much about report of plasma sterilization Study on Technology and patented product.Plasma sterilizing equipment is no matter be the device that does not all detect plasma that observation window is arranged or do not have observation window at present, and owing to there is the unsuccessful situation of plasma build-up of luminance, this device of monitoring of plasma has in real time often stayed hidden danger to plasma sterilization, perhaps owing to there not being monitoring of plasma in real time to reduce the efficient of plasma sterilization.
At present the various Low Temperature Plasma Sterilizers that use in hospital are mainly contained the monitoring of 3 aspects:
Whether 1) physics monitoring is according to parameters such as the pressure of sterilization process record sterilization, times, normal in order to judge whole sterilization flow process; The strict operational procedure of using sterilizer of carrying out, the proterties of inspection bactericidal agent, it is inferior that sterilizing article character, quantity, degree of drying, sterilization finish back record sterilization duration, operator's name and autoclave.
2) chemical monitoring, when packing, chemical indicator card is placed on the central suitable position of bag and pastes chemical indicator tape, can judge the infiltration state of hydrogen peroxide according to indicator card variable color situation after sterilization, infer sterilization effect, chemical indicator card becomes yellow by redness, and to be judged as sterilization qualified.
3) biological monitoring, by being biological indicator to the strongest hot pimelobacter sp gemma of biting of hydrogen peroxide plasma tolerance, during monitoring biological indicator is placed into the darkest position on the lower side in the sterilization storehouse, sterilization finishes the back and takes out crushing culture medium wherein, putting into constant incubator cultivated 48 hours, if, control group color change yellowly, judging has the viable bacteria growth, the test set color does not change, still be purple blue, just illustrate that gemma is killed fully, infer that this sterilization process has reached sterilization.
More than the monitoring of 3 aspects all do not have truly to monitor the important plasma parameters such as floating potential, averag density, mean temperature and ultraviolet spectra of plasma in the Low Temperature Plasma Sterilizers, this four indices has directly determined the physical characteristic of plasma, has determined the effect of low-temperature plasma sterilization.The various Low Temperature Plasma Sterilizers that use in hospital all are the indirect monitoring means that adopt above 3 aspects at present, the monitoring of these 3 aspects is the monitoring means as sterilization of medical instrument equipment routine, in fact comprise that the autoclave sterilization device also has same monitoring, these devices all directly do not utilize the physical parameter of low temperature plasma itself, in real time not direct monitoring of plasma, it is disconnected to cause Low Temperature Plasma Sterilizers that erroneous judgement takes place under the situation that does not produce normal plasma, the physics monitoring can be thought and sterilizes successfully, under the situation of medicine equipment turnover anxiety, can cause medical personnel's successful apparatus of will not sterilizing to think by mistake to sterilize and successfully use, thereby cause great malpractice.
The utility model content:
The purpose of this utility model, exactly in order to address the above problem, a kind of checkout gear of low-temperature plasma bactericidal unit ionic medium body is provided, directly utilize the physical characteristic of low temperature plasma itself, real-time both important plasma parameter such as aura phenomenon of floating potential, averag density, the mean temperature of plasma and the electron cloud that contains ultraviolet spectra in the monitoring Low Temperature Plasma Sterilizers is to judge the sterilization effect of low-temperature plasma bactericidal unit.
For achieving the above object, the technical solution of the utility model is:
A kind of checkout gear of low-temperature plasma bactericidal unit ionic medium body comprises metal closed container, mesh-like antenna, radio-frequency power supply, DC power supply, radio frequency electrode, DC electrode, insulating support, vacuum system, vacuum gauge, thermometer, hydrogen peroxide injecting device; Wherein the metal closed container is cylindrical shape or square, on the metal closed container inwall, inwardly is connected with a plurality of insulating supports, and the insulating support inner termination is connected with the mesh-like antenna;
Metal closed container housing is provided with radio frequency electrode, DC electrode, vacuum gauge, thermometer, hydrogen peroxide injecting device, and hydrogen peroxide injecting device is positioned at metal closed container top, communicates with metal closed container cavity volume; Metal closed container cavity volume is communicated with vacuum system;
The mesh-like antenna is electrically connected with radio frequency electrode, DC electrode respectively; Radio-frequency power supply, DC power supply are positioned at outside the metal closed container housing, and radio-frequency power supply is electrically connected with the mesh-like antenna by radio frequency electrode; DC power supply is electrically connected with the mesh-like antenna by DC electrode;
Also comprise light sensor, light sensor is arranged on the metal closed container inwall, between metal closed container inwall and mesh-like antenna; Light sensor is electrically connected with metal closed container housing comparator, control device, drive unit outward successively by connecting line;
Drive unit is electrically connected with radio-frequency power supply, DC power supply, vacuum system and hydrogen peroxide injecting device.
The checkout gear of described plasma, its described light sensor is that detection range reaches ultraviolet light sensor.
The checkout gear of described plasma, its described mesh-like antenna is at least a slice, and its shape and metal closed container madial wall are suitable, and the spacing of mesh-like antenna and metal closed container madial wall is 10mm～40mm.
Described plasma checkout gear, whether its described light sensor is to have the aura phenomenon to produce when detecting plasma sterilization.
The checkout gear of described plasma, its described light sensor detects ultraviolet scope, is the ultraviolet ray of wavelength between 100nm～400nm.
The checkout gear of described plasma, it also comprises outer heater, heater outside metal closed container housing periphery circle is provided with.
The utility model principle is simple, realizes easily, can effectively monitor the state of low-temperature plasma bactericidal unit ionic medium body, can effectively guarantee the sterilization effect of low-temperature plasma bactericidal unit, avoids the generation of malpractice.
Description of drawings:
Fig. 1 is the checkout gear structural representation of low-temperature plasma bactericidal unit ionic medium body of the present utility model.
Embodiment:
The utility model is to adopt light sensor to carry out the detection of low-temperature plasma bactericidal unit ionic medium body, low Temperature Plasma Sterilization Technology is a kind of new low temperature sterilization method, the result of the normal generation decision sterilization of plasma, so monitoring low temperature plasma sterilization process ionic medium body is vital, principle of the present utility model is to utilize under plasmoid, a series of physics and chemical change take place in material, as electron exchange, the electron energy conversion, molecular collision, chemistry dissociates and reorganization etc., these variations make the ionized gas cloud produce electronics, the electriferous state cloud form material that ion and neutron etc. are combined into, these materials contain molecule, excited atom, metastable atom, particle and ultraviolet rays such as free radical, gamma-rays, β rays etc., the generation of these ionized gas clouds is the aura phenomenon both.Because the floating potential of plasma, averag density, mean temperature needs the monitoring equipment of specialty, these monitoring equipment costs are high, and volume is very big, be not suitable for being installed in the low-temperature plasma bactericidal unit, so the utility model adopts light sensor to carry out the monitoring of plasma, because the floating potential of plasma, averag density, mean temperature and comprise that the important plasma physics parameters such as electron cloud of ultraviolet spectra are interrelated, under low-temperature plasma was sterilized such device condition, the electron cloud that forms when monitoring of plasma produces both aura phenomenon just can judge whether plasma successfully produces.
Referring to Fig. 1, it is the checkout gear structure of low-temperature plasma bactericidal unit ionic medium body of the present utility model, metal closed container 1 is cylindrical shape or square, on metal closed container 1 inwall, inwardly be connected with a plurality of insulating supports 3, insulating support 3 inner termination are connected with mesh-like antenna 2, mesh-like antenna 2 is electrically connected with radio frequency electrode 5, radio frequency electrode 5 is electrically connected with metal closed container 1 housing radio-frequency power supply 4 outward, and DC electrode 7 is electrically connected with metal closed container 1 housing DC power supply 6 outward.Mesh-like antenna 2 is at least a slice, and its shape and metal closed container 1 madial wall are suitable, and mesh-like antenna 2 is 10mm～40mm with the spacing of metal closed container 1 madial wall.
Metal closed container 1 housing is provided with vacuum gauge 9, thermometer 10, hydrogen peroxide injecting device 11, and hydrogen peroxide injecting device 11 is positioned at metal closed container 1 top, communicates with metal closed container 1 cavity volume.Metal closed container 1 cavity volume is communicated with vacuum system 8.Light sensor 12 is arranged on metal closed container 1 inwall, and between metal closed container 1 inwall and mesh-like antenna 2, light sensor 12 detects the generation of the sterilization process aura in the metal closed container 1.Metal closed container 1 housing periphery circle is provided with outer heater 16.
During use, the article that need sterilization are placed metal closed container 1, the vacuum pump of vacuum system 8 begins to bleed, under the proper pressure condition, control device 14 starts radio-frequency power supply 4, produce capacitance coupling type between mesh-like antenna 2 and the metal closed container 1 and form low temperature plasma, plasma passes through the gap of mesh-like antenna 2 by spreading naturally to container 1 center all around, forms homogeneous plasma at last in whole metal closed container 1.
Radio-frequency power supply 3 is kept discharge 3～10 minutes, injects medical hydrogen peroxide gas by hydrogen peroxide injecting device 11 to metal closed container 1, and vacuum degree descends naturally; Continue to repeat above-mentionedly to bleed, discharge step, close vacuum system 8 and radio-frequency power supply 4 then, open the inflation unit of vacuum system 8 again, in metal closed container 1, supply gas, when reaching the atmospheric pressure balance in the metal closed container 1, take out sterilizing article, whole sterilization process finishes.
In the production process of plasma, light sensor 12 is in detected state always, and corresponding received light intensity produces a signal of telecommunication, with the testing result that produces, be sent to the comparator 13 that is electrically connected light sensor 12, with comparator 13 relatively, the intensity that should the signal of telecommunication and the relation of a threshold value are judged, when comparator 13 determines that light intensity is lower than the setting threshold value, determine not produce plasma, promptly send a signal and give control device 14, control device 14 sends a signal enabling drive unit 15, and drive unit 15 sends a drive DC power supply 6 and discharges, after utilizing DC power supply 6 scratch starts, again drive radio-frequency power supply 4 and discharge, produce plasma, thereby guaranteed the generation of plasma.
Claims (6)
1. the checkout gear of a low-temperature plasma bactericidal unit ionic medium body comprises metal closed container, mesh-like antenna, radio-frequency power supply, DC power supply, radio frequency electrode, DC electrode, insulating support, vacuum system, vacuum gauge, thermometer, hydrogen peroxide injecting device; Wherein the metal closed container is cylindrical shape or square, on the metal closed container inwall, inwardly is connected with a plurality of insulating supports, and the insulating support inner termination is connected with the mesh-like antenna;
Metal closed container housing is provided with radio frequency electrode, DC electrode, vacuum gauge, thermometer, hydrogen peroxide injecting device, and hydrogen peroxide injecting device is positioned at metal closed container top, communicates with metal closed container cavity volume; Metal closed container cavity volume is communicated with vacuum system;
The mesh-like antenna is electrically connected with radio frequency electrode, DC electrode respectively; Radio-frequency power supply, DC power supply are positioned at outside the metal closed container housing, and radio-frequency power supply is electrically connected with the mesh-like antenna by radio frequency electrode; DC power supply is electrically connected with the mesh-like antenna by DC electrode; It is characterized in that:
Also comprise light sensor, light sensor is arranged on the metal closed container inwall, between metal closed container inwall and mesh-like antenna; Light sensor is electrically connected with metal closed container housing comparator, control device, drive unit outward successively by connecting line;
Drive unit is electrically connected with radio-frequency power supply, DC power supply, vacuum system and hydrogen peroxide injecting device.
2. the checkout gear of plasma as claimed in claim 1, it is characterized in that: described light sensor is that detection range reaches ultraviolet light sensor.
3. the checkout gear of plasma as claimed in claim 1, it is characterized in that: described mesh-like antenna is at least a slice, and its shape and metal closed container madial wall are suitable, and the spacing of mesh-like antenna and metal closed container madial wall is 10mm～40mm.
4. plasma checkout gear as claimed in claim 1 or 2 is characterized in that: whether described light sensor is to have the aura phenomenon to produce when detecting plasma sterilization.
5. the checkout gear of plasma as claimed in claim 4, it is characterized in that: described light sensor detects ultraviolet scope, is the ultraviolet ray of wavelength between 100nm～400nm.
6. as the checkout gear of claim 1,2,3 or 5 described plasmas, it is characterized in that: also comprise outer heater, heater outside metal closed container housing periphery circle is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201041396U CN201018709Y (en) | 2007-04-05 | 2007-04-05 | Plasma testing apparatus in low temperature plasma disinfection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201041396U CN201018709Y (en) | 2007-04-05 | 2007-04-05 | Plasma testing apparatus in low temperature plasma disinfection device |
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| Publication Number | Publication Date |
|---|---|
| CN201018709Y true CN201018709Y (en) | 2008-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201041396U Expired - Fee Related CN201018709Y (en) | 2007-04-05 | 2007-04-05 | Plasma testing apparatus in low temperature plasma disinfection device |
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| Country | Link |
|---|---|
| CN (1) | CN201018709Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810870A (en) * | 2010-04-16 | 2010-08-25 | 北京白象新技术有限公司 | Method and device for controlling precise measurement of hydrogen sulfide pulsation injecting liquid through pressure degenerative feedbacks |
| CN102149247A (en) * | 2011-04-08 | 2011-08-10 | 东南大学 | Device and method for generating low-energy high-density plasma by multi-level ionization |
| CN102316905A (en) * | 2009-02-17 | 2012-01-11 | 马克思·普朗克学会 | Treating device for treating a body part of a patient with a non-thermal plasma |
| CN109091690A (en) * | 2018-09-20 | 2018-12-28 | 华蓥市职业教育培训中心 | A kind of novel low temperature plasma sterilizer |
| CN110876220A (en) * | 2018-08-29 | 2020-03-10 | 中国石油化工股份有限公司 | Device and method for measuring thermal effect of plasma generator |
-
2007
- 2007-04-05 CN CNU2007201041396U patent/CN201018709Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316905A (en) * | 2009-02-17 | 2012-01-11 | 马克思·普朗克学会 | Treating device for treating a body part of a patient with a non-thermal plasma |
| CN101810870A (en) * | 2010-04-16 | 2010-08-25 | 北京白象新技术有限公司 | Method and device for controlling precise measurement of hydrogen sulfide pulsation injecting liquid through pressure degenerative feedbacks |
| CN101810870B (en) * | 2010-04-16 | 2012-09-05 | 北京白象新技术有限公司 | Method and device for controlling precise measurement of hydrogen peroxide pulsation injecting liquid through pressure negative feedbacks |
| CN102149247A (en) * | 2011-04-08 | 2011-08-10 | 东南大学 | Device and method for generating low-energy high-density plasma by multi-level ionization |
| CN110876220A (en) * | 2018-08-29 | 2020-03-10 | 中国石油化工股份有限公司 | Device and method for measuring thermal effect of plasma generator |
| CN109091690A (en) * | 2018-09-20 | 2018-12-28 | 华蓥市职业教育培训中心 | A kind of novel low temperature plasma sterilizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Plasma testing apparatus in low temperature plasma disinfection device Effective date of registration: 20101228 Granted publication date: 20080206 Pledgee: Zhongguancun Beijing science and technology Company limited by guarantee Pledgor: Beijing Baixiang Science & Technology Co., Ltd. Registration number: 2010990001030 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Plasma testing apparatus in low temperature plasma disinfection device Effective date of registration: 20101228 Granted publication date: 20080206 Pledgee: Zhongguancun Beijing science and technology Company limited by guarantee Pledgor: Beijing Baixiang Science & Technology Co., Ltd. Registration number: 2010990001030 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20160405 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |