CN113521352B - Vaporization generating device for biological sterilization of vaporized hydrogen peroxide and control method thereof - Google Patents
Vaporization generating device for biological sterilization of vaporized hydrogen peroxide and control method thereof Download PDFInfo
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- CN113521352B CN113521352B CN202110928566.0A CN202110928566A CN113521352B CN 113521352 B CN113521352 B CN 113521352B CN 202110928566 A CN202110928566 A CN 202110928566A CN 113521352 B CN113521352 B CN 113521352B
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 148
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 40
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 40
- 238000009834 vaporization Methods 0.000 title claims abstract description 29
- 230000008016 vaporization Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000001704 evaporation Methods 0.000 claims abstract description 67
- 230000008020 evaporation Effects 0.000 claims abstract description 67
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 abstract description 15
- 239000010959 steel Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000889 atomisation Methods 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 101150006573 PAN1 gene Proteins 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/20—Gaseous substances, e.g. vapours
- A61L2/208—Hydrogen peroxide
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/24—Apparatus using programmed or automatic operation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/26—Accessories or devices or components used for biocidal treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/15—Biocide distribution means, e.g. nozzles, pumps, manifolds, fans, baffles, sprayers
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The invention discloses a vaporization generating device for biological sterilization of vaporized hydrogen peroxide and a control method thereof, wherein the vaporization generating device comprises an evaporation tray, a peristaltic pump, an atomizing pump, a fan and a preheating pipe, the evaporation tray comprises two inner cavities communicated with the bottom, a liquid adding opening connected with the peristaltic pump and the atomizing pump is arranged at the top of the evaporation tray, the side wall of the evaporation tray is provided with an air inlet and an air outlet respectively communicated with the two inner cavities, the air inlet is connected with the preheating pipe, and the air outlet is connected with a room needing biological sterilization of vaporized hydrogen peroxide; the wall of the inner cavity communicated with the air inlet is provided with an arc evaporation surface, a heating net is arranged in the inner cavity, and the arc evaporation surface and the liquid adding opening are respectively positioned at two sides of the heating net. The invention adds the atomization device and the preheating pipe to ensure the flash evaporation effect: the internal structure of the evaporation tray is changed, and the vaporization effect is improved; the speed of the injection pump can be controlled according to the feedback of an external signal, so that the color steel plate is protected; meanwhile, 35% hydrogen peroxide and 8% hydrogen peroxide are compatible, so that the method is suitable for more environments.
Description
Technical Field
The invention relates to the field of biological sterilization equipment, in particular to a vaporization generating device for biological sterilization of vaporized hydrogen peroxide and a control method thereof.
Background
In the field of biological sterilization by Vaporized Hydrogen Peroxide (VHP), how to avoid the peeling of the color steel plate due to the corrosion of hydrogen peroxide gas is always a difficult point. In order to ensure the reliability of sterilization, a large amount of hydrogen peroxide is injected to improve the concentration of the hydrogen peroxide in the environment, so that a color steel plate in a clean room is in high-concentration corrosive gas, the aging of the color steel plate is accelerated, the color steel plate can peel off and easily generate the breeding of bacteria, the concentration in the environment cannot be controlled when the hydrogen peroxide is used for sterilization, the whole concentration always shows an ascending trend when the color steel plate is sterilized, if the concentration of the hydrogen peroxide in the environment is reduced, the sterilization is failed, the concentration seems to be a double-edged sword, and the color steel plate is greatly damaged when the color steel plate is sterilized every time.
Referring to fig. 1-3, there is shown an evaporation tray 1' used in prior art VHP sterilization technology, which generally adopts dry flash evaporation, the top of the evaporation tray 1' is provided with three filling ports 101', the inside of the evaporation tray is provided with two communicating chambers and is provided with an air inlet 103' and an air outlet 104' respectively, which are communicated with the outside, and the wall of the chamber in communication with the air inlet 103' is provided with an arc-shaped evaporation surface 102'. Hydrogen peroxide is instantaneously evaporated into gas by a flash evaporation technology, and then hydrogen peroxide gas is blown into an environment to be sterilized, because the sterilization effect of hydrogen peroxide in a gas form is far higher than that of liquid. The dry sterilization that uses simultaneously still has the requirement to the humidity between the sterilization, needs the humidity in the control environment, prevents the condensation phenomenon that humidity is high causes, if the condensation has appeared on various steel sheet surface, can lead to hydrogen peroxide gas to become the hydrogen peroxide liquid that concentration is higher once more and adsorb on various steel sheet. Originally, 35% hydrogen peroxide is used, even dehumidify the environment in the workshop before the resterilization, still can cause the damage to various steel sheet, often appear the foaming phenomenon after several times in some less than or the space workshop of various steel sheet quality. Furthermore, the damage caused by the use of 35% hydrogen peroxide is a long-term problem, and even if the foaming phenomenon does not occur several times before, the damage does not represent the problem of sterilization later. This is also caused primarily by the highly corrosive nature of the high concentrations of hydrogen peroxide
At present, 8% hydrogen peroxide is required to replace 35% hydrogen peroxide, and although the consumption of hydrogen peroxide is increased, the concentration in the environment is slowly and steadily increasing.
Disclosure of Invention
The present invention aims at solving the above problems and providing a vaporization generator for biological sterilization of vaporized hydrogen peroxide, which ensures complete vaporization of hydrogen peroxide, improves the external structure of the evaporation tray, and is provided with an atomization device to help better vaporization, so that hydrogen peroxide entering the evaporation tray is blown away immediately to meet the vaporization requirement.
The purpose of the invention is realized as follows:
the invention relates to a vaporization generating device for biological sterilization of vaporized hydrogen peroxide, which comprises:
the hydrogen peroxide evaporation device comprises an evaporation disc, a peristaltic pump, an atomizing pump, a fan and a preheating pipe, wherein the peristaltic pump is used for injecting hydrogen peroxide into the evaporation disc through the peristaltic pump;
the inside of the evaporation disc comprises two inner cavities, the bottoms of the two inner cavities are communicated, a liquid adding opening connected with the peristaltic pump and the atomizing pump is formed in the top of the evaporation disc, an air inlet and an air outlet which are respectively communicated with the two inner cavities are formed in the side wall of the evaporation disc, the air inlet is connected with the preheating pipe, and the air outlet is connected with a room needing vaporized hydrogen peroxide biological sterilization;
the wall of the inner cavity communicated with the air inlet is provided with an arc evaporation surface, a heating net is arranged in the inner cavity, and the arc evaporation surface and the liquid adding opening are respectively positioned at two sides of the heating net.
The heating net in the vaporization generating device for biological sterilization of vaporized hydrogen peroxide is arc-shaped.
The heating net in the vaporization generating device for biological sterilization of vaporized hydrogen peroxide divides an inner cavity provided with the vaporization generating device into two parts.
The liquid feeding port of the vaporization generating device for biological sterilization of vaporized hydrogen peroxide is connected with an atomizing nozzle, and the atomizing nozzle is respectively connected with a peristaltic pump and an atomizing pump.
The vaporization generating device for biological sterilization of vaporized hydrogen peroxide also comprises a PLC controller which is connected with the peristaltic pump to control the operation and the frequency of the peristaltic pump.
The invention also provides a control method of the vaporization generating device for biological sterilization of vaporized hydrogen peroxide, which comprises the following steps:
s1: hydrogen peroxide concentration and humidity information of a plurality of groups of sterilization spaces are collected and input into a PLC (programmable logic controller), and the PLC processes the collected information according to program setting;
s2: the PLC controller controls the operation and the frequency of the peristaltic pump to enable the concentration of the hydrogen peroxide in the space to be sterilized to be in an average level, when the concentration of the hydrogen peroxide is lower than a set value, the speed of the peristaltic pump is increased to enable more hydrogen peroxide to enter the evaporation disc, further the hydrogen peroxide concentration curve of the sterilization space is kept in a stable level, and when the concentration of the hydrogen peroxide is higher than the set value, the speed of the peristaltic pump is kept;
s3: the PLC controls the operation and frequency of the peristaltic pump to enable the humidity of the space to be sterilized to be at an average level, when the humidity is lower than a set value, the speed of the peristaltic pump is increased to enable more hydrogen peroxide to enter the evaporation disc, further the humidity curve of the sterilization space is kept at a stable level, and when the humidity is higher than the set value, the speed of the peristaltic pump is kept.
The invention adds the atomization device and the preheating pipe to ensure the flash evaporation effect: the internal structure of the evaporation tray is changed, and the vaporization effect is improved; the speed of the injection pump can be controlled according to the feedback of an external signal, and a color steel plate is protected; the device can be compatible with 35% hydrogen peroxide and 8% hydrogen peroxide at the same time, and can be suitable for more environments. In order to ensure the complete vaporization of the hydrogen peroxide, the invention improves the external structure of the evaporation tray, and is provided with the atomizing device to help the evaporation tray to vaporize better, so that the hydrogen peroxide entering the evaporation tray is blown away immediately to meet the vaporization requirement.
Drawings
FIG. 1 is a top view of a prior art evaporation pan;
fig. 2 is a sectional view of a conventional evaporation pan;
FIG. 3 is a right side view of a prior art evaporation pan;
FIG. 4 is a schematic diagram of the vaporization generator for biological sterilization of vaporized hydrogen peroxide according to the present invention;
FIG. 5 is a cross-sectional view of an evaporation pan of the present invention;
FIG. 6 isbase:Sub>A schematic view of the structure of FIG. 5 taken along the line A-A;
FIG. 7 is a right side view of FIG. 5;
fig. 8 is a control logic diagram of the PLC controller of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 5-7, a vaporization generating apparatus for biological sterilization of vaporized hydrogen peroxide according to the present invention is shown comprising:
the hydrogen peroxide evaporation device comprises an evaporation tray 1, a peristaltic pump 2 for injecting hydrogen peroxide into the evaporation tray 1, an atomizing pump 3 for injecting atomizing gas into the evaporation tray, a fan 4 and a preheating pipe 5 connected with an air outlet of the fan 4, wherein hot air at an outlet of the preheating pipe 5 is input into the evaporation tray 1;
the inside of the evaporation tray 1 comprises two inner cavities, the bottoms of the two inner cavities are communicated, a liquid adding port 101 connected with the peristaltic pump 2 and the atomizing pump 3 is arranged at the top of the evaporation tray 1, a gas inlet 103 and a gas outlet 104 which are respectively communicated with the two inner cavities are arranged on the side wall of the evaporation tray 1, wherein the gas inlet 103 is connected with the preheating pipe 5, and the gas outlet 104 is connected with a user end which is required by the biological sterilization of vaporized hydrogen peroxide; the wall of the inner cavity communicated with the air inlet 103 is provided with an arc-shaped evaporation surface 102, a heating net 105 is arranged in the inner cavity, and the arc-shaped evaporation surface 102 and the liquid adding port 101 are positioned at two sides of the heating net 105.
In this embodiment, the heating net 105 is arc-shaped and divides an inner cavity in which the heating net is disposed into two parts;
the liquid adding port 101 is connected with an atomizing nozzle 6, and the atomizing nozzle 6 is respectively connected with the peristaltic pump 2 and the atomizing pump.
According to the invention, through adding the heating net 105, the fan 4 blows warm air into the evaporation disc 1 from the front, liquid can firstly contact the heating net 105, so that a pre-evaporation process is achieved, the effect of the heating net is very obvious under the condition of large flow because the liquid entering the heating net can pass through the atomization device, the heating net 105 increases the contact area of hydrogen peroxide, so that the evaporation effect of the hydrogen peroxide is better, the heating net is matched with the atomization pump 3 for use, and the flash evaporation effect can be ensured while the injection amount is increased.
The invention also comprises a PLC controller connected with the peristaltic pump 2, and the operation and the frequency of the peristaltic pump 2 are controlled through a logic algorithm of the PLC controller, so that the sterilization concentration of the whole space is in an average level. The rate of peristaltic pump 2 is controlled when the concentration (hydrogen peroxide concentration and humidity) is low, allowing more hydrogen peroxide to enter the evaporation pan 1 and the resulting concentration profile to remain at a steady level. In this embodiment, the PLC controller is a PLC controller of siemens corporation, and by collecting a large amount of information of the sterilization space and inputting the information into the PLC controller, the PLC controller automatically processes the collected information, and controls the peristaltic pump 2 according to a specific algorithm, and a specific control logic is shown in fig. 8.
In order to ensure the complete vaporization of the hydrogen peroxide, the invention improves the external structure of the evaporation tray, and is provided with the atomizing device to help the evaporation tray to vaporize better, so that the hydrogen peroxide entering the evaporation tray is blown away immediately to meet the vaporization requirement. And a signal feedback control function is added in the software of the PLC, and the speed of the peristaltic pump 2 is automatically modified according to the volume of the sterilization environment. The final concentration data curve has high repeatability, the concentration in the space is effectively maintained, and the color steel plate is protected.
The invention adds the atomizing device and the preheating pipe to ensure the flash evaporation effect: the internal structure of the evaporation tray 1 is changed, and the vaporization effect is improved; the speed of the peristaltic pump 2 can be controlled according to the external signal feedback, and the color steel plate is protected; the equipment can be compatible with 35% hydrogen peroxide and 8% hydrogen peroxide at the same time, and can be suitable for more environments.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore all equivalent technical solutions should also fall into the scope of the present invention, and should be defined by the claims.
Claims (4)
1. A vaporization generating device for biological sterilization of vaporized hydrogen peroxide, comprising:
the hydrogen peroxide evaporation device comprises an evaporation disc, a peristaltic pump, an atomizing pump, a fan and a preheating pipe, wherein the peristaltic pump is used for injecting hydrogen peroxide into the evaporation disc, the atomizing pump is used for injecting atomizing gas into the evaporation disc, the preheating pipe is connected with an air outlet of the fan, and hot air at an outlet of the preheating pipe is input into the evaporation disc;
the inside of the evaporation tray comprises two inner cavities with communicated bottoms, a liquid adding port connected with the peristaltic pump and the atomizing pump is arranged at the top of the evaporation tray, a gas inlet and a gas outlet which are respectively communicated with the two inner cavities are formed in the side wall of the evaporation tray, the gas inlet is connected with the preheating pipe, and the gas outlet is connected with a room needing to be subjected to biological sterilization by vaporized hydrogen peroxide;
the wall of the inner cavity communicated with the air inlet is provided with an arc evaporation surface, a heating net is arranged in the inner cavity, and the arc evaporation surface and the liquid adding port are respectively positioned at two sides of the heating net;
the heating net is arc-shaped;
the device also comprises a PLC (programmable logic controller) which is connected with the peristaltic pump to control the operation and the frequency of the peristaltic pump;
and a signal feedback control module is arranged in the PLC.
2. The vaporization generating apparatus for biological sterilization of vaporized hydrogen peroxide according to claim 1, wherein said heating mesh divides an interior chamber in which it is disposed into two portions.
3. The vaporization generating device for biological sterilization of vaporized hydrogen peroxide according to claim 1, wherein said filling port is connected to an atomizing nozzle, said atomizing nozzle being connected to said peristaltic pump and said atomizing pump, respectively.
4. The method of controlling a vaporization generator for biological sterilization of vaporized hydrogen peroxide according to claim 1, wherein the control of the PLC controller comprises:
s1: hydrogen peroxide concentration and humidity information of a plurality of groups of sterilization spaces are collected and input into a PLC (programmable logic controller), and the PLC processes the collected information according to program setting;
s2: the PLC controller controls the operation and the frequency of the peristaltic pump to enable the concentration of the hydrogen peroxide in the space to be sterilized to be in an average level, when the concentration of the hydrogen peroxide is lower than a set value, the speed of the peristaltic pump is increased to enable more hydrogen peroxide to enter the evaporation disc, further the hydrogen peroxide concentration curve of the sterilization space is kept in a stable level, and when the concentration of the hydrogen peroxide is higher than the set value, the speed of the peristaltic pump is kept;
s3: the PLC controls the operation and the frequency of the peristaltic pump to enable the humidity of the space to be sterilized to be at an average level, when the humidity is lower than a set value, the speed of the peristaltic pump is increased to enable more hydrogen peroxide to enter the evaporation disc, further the humidity curve of the sterilization space is kept at a stable level, and when the humidity is higher than the set value, the speed of the peristaltic pump is kept.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110928566.0A CN113521352B (en) | 2021-08-13 | 2021-08-13 | Vaporization generating device for biological sterilization of vaporized hydrogen peroxide and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110928566.0A CN113521352B (en) | 2021-08-13 | 2021-08-13 | Vaporization generating device for biological sterilization of vaporized hydrogen peroxide and control method thereof |
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| Publication Number | Publication Date |
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| CN113521352A CN113521352A (en) | 2021-10-22 |
| CN113521352B true CN113521352B (en) | 2022-10-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6406666B1 (en) * | 2001-02-20 | 2002-06-18 | Tetra Laval Holdings & Finance, Sa | Method and apparatus for vaporizing sterilant hydrogen peroxide |
| CN103182093A (en) * | 2013-04-11 | 2013-07-03 | 中国人民解放军军事医学科学院卫生装备研究所 | Hydrogen peroxide steam sterilizing device |
| CN209819764U (en) * | 2019-01-28 | 2019-12-20 | 张媛媛 | Atomizer for orthopedics |
| CN112703028A (en) * | 2018-09-20 | 2021-04-23 | 通用电气公司 | System and method for inductively heated anesthetic gasifier |
-
2021
- 2021-08-13 CN CN202110928566.0A patent/CN113521352B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6406666B1 (en) * | 2001-02-20 | 2002-06-18 | Tetra Laval Holdings & Finance, Sa | Method and apparatus for vaporizing sterilant hydrogen peroxide |
| CN103182093A (en) * | 2013-04-11 | 2013-07-03 | 中国人民解放军军事医学科学院卫生装备研究所 | Hydrogen peroxide steam sterilizing device |
| CN112703028A (en) * | 2018-09-20 | 2021-04-23 | 通用电气公司 | System and method for inductively heated anesthetic gasifier |
| CN209819764U (en) * | 2019-01-28 | 2019-12-20 | 张媛媛 | Atomizer for orthopedics |
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| CN113521352A (en) | 2021-10-22 |
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Effective date of registration: 20240103 Address after: 2nd Floor, Building 10, No. 1555 Duhui Road, Minhang District, Shanghai, 201109 Patentee after: SHANGHAI HARMONY BIO-CELL TECHNOLOGY Co.,Ltd. Address before: 201109 2nd floor, building 11, 988 Zhongchun Road, Minhang District, Shanghai Patentee before: SHANGHAI HARMONY BIOTECHNOLOGY Co.,Ltd. |