CN207611017U - A kind of oxygen concentration calibrating installation - Google Patents
A kind of oxygen concentration calibrating installation Download PDFInfo
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- CN207611017U CN207611017U CN201721509049.5U CN201721509049U CN207611017U CN 207611017 U CN207611017 U CN 207611017U CN 201721509049 U CN201721509049 U CN 201721509049U CN 207611017 U CN207611017 U CN 207611017U
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Abstract
This application discloses a kind of oxygen concentration calibrating installations, including：The oxygen concentration of local environment is measured, and sends the ultrasonic wave densimeter of analog signal；It is provided with ultrasonic wave densimeter, is adjusted the temperature inside the box to the temperature control box of target temperature according to the temperature adjust instruction received；It is connected with ultrasonic wave densimeter, to the outer input port of its transmission standard concentration oxygen；It is connected with ultrasonic wave densimeter, carries out the data converter of analog-to-digital conversion；It is connected with temperature control box, data converter and information processing equipment, the headend that temperature adjust instruction is sent to temperature control box, information processing equipment will be sent to for the measured oxygen concentration data of digital signal；Corresponding temperature adjust instruction is generated and issued according to the information of input, is received as the information processing equipment of the measured oxygen concentration data of digital signal.The device can more accurately alarm to low concentration oxygen to remind end user, reduce return of goods rate, promote product customer satisfaction and client's usage experience.
Description
Technical field
This application involves oxygen concentration detection technique field, more particularly to a kind of oxygen concentration calibrating installation.
Background technology
In medical oxygen generator industry, the patient for respiratory disease is needed to provide oxygen, medical st atute requires medical system
Oxygen mechanism oxygen concentration should have alarm when being less than 85%,.Therefore, the practical oxygen concentration provided of medical oxygen generator is carried out
It is highly important when monitoring in real time, and alarm is sent out in low concentration.
It can be because in production and anabolic process under the concentration detection apparatus that existing various brands, producer provide, actual conditions
Precision problem, cause certain parameters of the actual product obtained under identical manufacturing process that can have differences, the phenomenon is extensive
The like products of the different batches of generation, even same batch also still remains difference, and the presence of these differences may
It is inconsistent to eventually lead to the result that different concentration detection apparatus detects identical oxygen concentration, is deposited when less than warning concentration
It is being mistakenly considered to be higher than dangerous results of the warning concentration without alarm, serious consequence may be caused.
So how to be directed to the technological deficiency of existing concentration detection apparatus, a kind of difference parameter to being widely present is provided
The oxygen concentration calibrating installation calibrated is those skilled in the art's urgent problem to be solved.
Invention content
The purpose of the application is to provide a kind of oxygen concentration calibrating installation, can be to identical ultrasonic wave densimeter because of reality
Border produces parameter differences caused by with assembling process and is calibrated, and promotes the accuracy of detection to the oxygen concentration actually provided, energy
It is enough more precisely to alarm low concentration oxygen to remind user, it reduces not alarm in low concentration and causes serious consequence
Possibility, while also reducing product return of goods rate, and improve product customer satisfaction and the usage experience of client.
In order to solve the above technical problems, the application provides a kind of oxygen concentration calibrating installation, the oxygen concentration calibrating installation
Including：
The oxygen concentration of local environment is measured, and sends the ultrasonic wave concentration for the measured oxygen concentration data for being analog signal
Meter；
It is provided with ultrasonic wave densimeter described in predetermined number, is adjusted the temperature inside the box according to the temperature adjust instruction received
To the temperature control box of target temperature；
It is connected with the ultrasonic wave densimeter, to the outer input port of the ultrasonic wave densimeter transmission standard concentration oxygen；
It is connected with the ultrasonic wave densimeter, analog signal data is converted to the data converter of digital signal data；
It is connected with the temperature control box, the data converter and information processing equipment, by the temperature adjust instruction
It is sent to the temperature control box, turns the data for being sent to described information processing equipment for the measured oxygen concentration data of digital signal
Send out device；
It is generated according to the information of input and issues corresponding temperature adjust instruction；The oxygen concentration for being received as digital signal is surveyed
Measure the information processing equipment of data.
Optionally, the temperature control box includes：
It is connected with the headend, extracts target temperature from the temperature adjust instruction received, and according to inspection
The actual temperature temperature for generating and sending heating signal or cooling signal corresponding with the temperature difference of the target temperature in the case measured
Detection device；
It is connected with the output end of the temperature-detecting device, according to the heating signal received by the temperature in the temperature control box
Degree rises to the heat riser of the target temperature；
It is connected with the output end of the temperature-detecting device, according to the cooling signal received by the temperature in the temperature control box
Degree is down to the heat sink of the target temperature.
Optionally, which can also include：
Whether detection is passed through the normal concentration oxygen in the temperature control box in the oxygen concentration for presetting oxygen concentration range
Monitor.
Optionally, which can also include：
It is connected with the oxygen concentration monitor, Concentration Testing is passed through to the oxygen concentration monitor every preset time
Correcting gas, to correct the external calibration equipment for the Concentration Testing error that the oxygen concentration monitor occurs.
Optionally, the heat riser and the heat sink are heat exchanging copper pipe.
Optionally, the data converter is specially RS232 data converters.
Optionally, the headend is specially USB3.0 transponders.
Optionally, described information processing equipment is specially PC machine.
A kind of oxygen concentration calibrating installation provided herein, including：The oxygen concentration of local environment is measured, and is sent
For the ultrasonic wave densimeter of the measured oxygen concentration data of analog signal；It is provided with ultrasonic wave densimeter described in predetermined number, root
The temperature inside the box is adjusted to the temperature control box of target temperature according to the temperature adjust instruction received；With the ultrasonic wave densimeter phase
Even, to the outer input port of the ultrasonic wave densimeter transmission standard concentration oxygen；It is connected with the ultrasonic wave densimeter, will simulates
Signal data is converted to the data converter of digital signal data；At the temperature control box, the data converter and information
It manages equipment to be connected, the temperature adjust instruction is sent to the temperature control box, will be for the measured oxygen concentration number of digital signal
According to the headend for being sent to described information processing equipment；It is generated according to the information of input and issues corresponding temperature adjustment and referred to
It enables；It is received as the information processing equipment of the measured oxygen concentration data of digital signal.
Obviously, technical solution provided herein provides two different calibration temperature using temperature control box, every to obtain
A respective difference parameter of ultrasonic wave densimeter, in the case where learning specific difference parameter, more accurately to measure ring to be measured
Oxygen concentration under border promotes the precision of oxygen concentration detection, reduces return of goods rate, promotes product customer satisfaction and client uses body
It tests.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
A kind of setting schematic diagram for oxygen concentration calibrating installation that Fig. 1 is provided by the embodiment of the present application；
The setting schematic diagram for another oxygen concentration calibrating installation that Fig. 2 is provided by the embodiment of the present application.
In figure：
10. 40. headend of ultrasonic wave densimeter 20. temperature control box, 30. data converter, 50. information processing equipment
21. 24. heat sink of outer input port 22. temperature-detecting device, 23. heat riser
Specific implementation mode
The core of the application is to provide a kind of oxygen concentration calibrating installation, can be to identical ultrasonic wave densimeter because of reality
Border produces parameter differences caused by with assembling process and is calibrated, and promotes the accuracy of detection to the oxygen concentration actually provided, energy
It is enough more precisely to alarm low concentration oxygen to remind user, it reduces not alarm in low concentration and causes serious consequence
Possibility, while also reducing product return of goods rate, and improve product customer satisfaction and the usage experience of client.
To keep the purpose, technical scheme and advantage of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, technical solutions in the embodiments of the present application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
The all other embodiment obtained without making creative work, shall fall in the protection scope of this application.
Below in conjunction with Fig. 1 to Fig. 2, oxygen concentration calibrating installation provided herein is illustrated, Fig. 1 is the application
A kind of setting schematic diagram for oxygen concentration calibrating installation that embodiment is provided, Fig. 2 are provided another by the embodiment of the present application
The setting schematic diagram of kind oxygen concentration calibrating installation.
The oxygen concentration calibrating installation includes：
The oxygen concentration of local environment is measured, and sends the ultrasonic wave concentration for the measured oxygen concentration data for being analog signal
Meter 10；
Ultrasonic wave densimeter 10 is a kind of device detecting under test gas concentration under ambient enviroment using ultrasonic technology,
Its ultrasonic wave principle used is the object under test velocity of sound by measuring, to decision process parameter, such as gas or liquid
Concentration or density etc., the temperature Sound Speed Characteristics parameter curve of determinand is prestored in ultrasonic wave densimeter 10, according to the curve
Calculate required process control parameters.Ultrasonic wave densimeter 10 can also measure simultaneously and display density and flow, ultrasound
There are two types of the measuring probes of wave densimeter 10, and one is plug-in type, another kind is clamp-mounting type.
The measure equation that the application specifically uses is as follows：
Wherein, C is to lead to that the actual oxygen concentration that each ultrasonic wave densimeter 10 is received is arranged in temperature control box 20
(%), R are actual measurement reverse ultrasound number, F is the positive ultrasonic wave number of actual measurement, TrefIt is that ultrasonic wave is dense for calibration temperature (unit K), T
The measuring temperature of temperature sensor is carried on degree meter 10, A be one with the relevant systematic parameter of 10 length of ultrasonic wave densimeter,
Z is ultrasonic system phase difference, α is the coefficient of thermal expansion of the ultrasonic wave densimeter 10, B is another and the ultrasonic wave densimeter
The relevant systematic parameter of argon content in 10.
In so multi-parameter, parameter：B and α due in different ultrasonic wave densimeters difference it is extremely low, be usually identified as
Constant, and parameter：R, available parameter, T when F and T is practical measurementrefIt is to lead to setting to exist for calibration temperature, C
The actual concentrations for the oxygen to be measured that each ultrasonic wave densimeter 10 is received in temperature control box 20, can also regard as known quantity, therefore because
This remaining unknown quantity：A and Z.
Due in formula provided herein, the temperature control at practical adjustable namely ultrasonic wave densimeter 10
The temperature inside the box of case, therefore the application is adjusted the temperature inside the box of temperature control box 20 to two temperature using priority, we can assume that
For T1 and T2 so that unknown quantity A and Z can be utilized respectively T1 and T2 and other known amount establishes two equations, according to letter
Single mathematical knowledge at least needs two equations, therefore the application meets this it is recognised that solve two unknown numbers
One law can solve each ultrasonic wave densimeter by scheme provided by the present application by algebraic operation or linear figure method
10 respective true parameter A and Z.
Specifically, the T1 and T2 are specially how many, oxygen determination can be waited for according to actual conditions and with standard oxygen concentration
Concentration influence that gas occurs under target temperature etc. is because usually flexibly formulating, it is also contemplated that the height of cost performance in practical application
It is low, to obtain most suitable calibration temperature.
For example, may be used compared with 10 DEG C of low temperature and 40 DEG C of higher temperatures, why so it is arranged, first, in view of row
Except the ultrasonic thermometer 10 under different temperatures environment difference that may be present；Second, be not much different compared with room temperature, it can be opposite
Alignment purpose is realized with shorter time-consuming, lower testing cost.
Be provided with predetermined number ultrasonic wave densimeter 10, according to the temperature adjust instruction received by the temperature inside the box adjust to
The temperature control box 20 of target temperature；
The temperature control box 20 is one and can be adjusted the temperature inside the box to target temperature according to the temperature adjust instruction received
And the babinet of predetermined number ultrasonic wave densimeter 10 can be set, when carrying out calibration operation, need to setting in the temperature control box
Each ultrasonic wave densimeter 10 in 20 is passed through the oxygen of normal concentration so that it carries out Concentration Testing.
To achieve the above object, it is provided with as depicted in figs. 1 and 2, is connected with ultrasonic wave densimeter 10, it is dense to ultrasonic wave
The outer input port 21 of degree 10 transmission standard concentration oxygens of meter, for ensure oxygen concentration that each ultrasonic wave densimeter 10 receives,
Flow is identical so that otherness is not present in the normal concentration oxygen that each ultrasonic wave densimeter 10 is tested, can be fully sharp
With the characteristic of ultrasonic wave densimeter 10, since ultrasonic wave densimeter 10 is at tubulose, there are a Concentration Testing input terminals and defeated
Outlet, and ultrasonic wave Concentration Testing is non-destructive testing, it can be after the completion of a ultrasonic wave densimeter 10 detects via gas-guide tube
By normal concentration oxygen transmission to next ultrasonic wave densimeter 10, will finally not needed by the last one ultrasonic wave densimeter 10
Gas discharge.So the outer input port 21 of complicated setting respective numbers is not had to correspond to each ultrasonic wave densimeter respectively
10 input terminal.
The temperature control box 20 may particularly include：
It is connected with headend 40, extracts target temperature from the temperature adjust instruction received, and according to detection
To case in actual temperature it is corresponding with the temperature difference of the target temperature generate and send heating signal or cooling signal temperature inspection
Survey device 22；
It is connected with the output end of temperature-detecting device 22, is passed through the temperature in temperature control box according to the heating signal received
First preset time rises to the heat riser 23 of target temperature；
Be connected with the output end of temperature-detecting device 22, for according to the cooling signal that receives by the temperature in temperature control box
The heat sink 24 of target temperature is down to by the second preset time.
Specifically, the detailed process of the temperature-detecting device 22 can be：
Target temperature is extracted from the temperature adjust instruction received, and is detected and obtained the practical temperature in temperature control box 20
Degree sends the heating signal for carrying target temperature if actual temperature is less than target temperature；If actual temperature is more than target temperature
Degree then sends the cooling signal for carrying target temperature.
Wherein, the practical manifestation of temperature-detecting device 22 is realized varied, can be by the member of a variety of achievable correlation functions
Device forms, or the single device with repertoire, it is visual to actually use the particular/special requirement of manufacturer, and whether need
Consider the problems of that cost, follow-up O＆M are flexibly selected, herein and is not specifically limited.
And the purpose of heat riser 23 and heat sink 24 is to heat up or be cooled to target temperature by the actual temperature in case
Degree, simplest, can be one receives the heating signal or cooling signal just corresponding startup that temperature-detecting device 22 is sent
Simple function realization device, i.e., do not receive such signal or stop receive such signal after be just stopped；
It can be a set composite that can be voluntarily judged real time temperature in case, i.e., oneself judge by the reality in case
Temperature voluntarily adjusts work after adjusting to target temperature, can flexibly be selected according to actual conditions, herein and is not specifically limited.
Specifically, heat exchanging copper pipe can be selected to realize function in heat riser 23 and heat sink 24.
It is connected with ultrasonic wave densimeter 10, analog signal data is converted to the data converter 30 of digital signal data；
Under normal conditions, the Concentration Testing result that ultrasonic wave densimeter 10 generates is analog signal, for convenience of at information
It is shown and is handled in reason equipment 50, it is also necessary to which the data converter 30 is set, to carry out analog-to-digital conversion operation.Specifically,
The data converter 30 can carry out the transmission of signal with each ultrasonic wave densimeter 10 by individual data line, can also lead to
It crosses one point of multi-to-multi end data line and realizes while receiving the signal that multiple ultrasonic wave densimeters 10 are sent, it can be clever according to actual needs
Selection living.
It is connected with temperature control box 20, data converter 30 and information processing equipment 50, temperature adjust instruction is sent to
Temperature control box 20, the headend 40 that information processing equipment 50 will be sent to for the measured oxygen concentration data of digital signal；
It is generated according to the information of input and issues corresponding temperature adjust instruction；The oxygen concentration for being received as digital signal is surveyed
Measure the information processing equipment 50 of data.
Direct information transmission device of the headend 40 as information processing equipment 50, undertakes information forwarding capability,
Purpose is different information being transmitted to corresponding destination.
Specifically, data converter 30 can specifically select RS232 data converters, headend 40 that can specifically select
USB3.0 transponders, and directly select PC machine in a kind of manifestation mode as information processing equipment 50, certainly, in the PC machine
It also needs to that corresponding test program is installed to realize above-mentioned purpose, and can also be that program setting calibration is held since operation
Capable trigger condition, for example, being only intended to T and temperature control box 20 that the included temperature sensor of each ultrasonic wave densimeter 10 measures
Target temperature T after adjustmentrefDifference absolute value be no more than ± 2 DEG C when, just execution calibration procedure.
It is mentioned above dense to the standard that each ultrasonic wave densimeter 10 provides is arranged in temperature control box 20 via outer input port 21
Oxygen is spent, which is in preset concentration range, since each medical oxygen generator is for a lower limit of oxygen concentration processed
Warning concentration requires to be 85% concentration requirement in other words, once that is, actual concentrations are less than 85%, air hunger can not just be effectively relieved
Shape, that is to say, that medical oxygen generator needs higher detection sensitivity for the oxygen of 85% this concentration.
Therefore, which can be generally arranged at 84% to 88%, this range can effectively be reinforced pair
The accuracy of detection of 85% this lower limit, and judge whether the normal concentration oxygen in the preset concentration range is really in default
Concentration range can use additional device：
Detection is passed through the normal concentration oxygen in temperature control box 20, and whether the oxygen concentration in default oxygen concentration range is supervised
Control instrument；
It is connected with oxygen concentration monitor, being passed through Concentration Testing to oxygen concentration monitor every preset time corrects gas
Body, to correct the external calibration equipment of the Concentration Testing error of oxygen concentration monitor appearance.
The oxygen concentration monitor and the main distinction of ultrasonic wave densimeter 10 be, the oxygen concentration monitor volume compared with
Greatly, use that a variety of precision are higher, the time is longer and the concentration sensing modality of flow and flow complexity, it is most important that the oxygen
The cost of concentration measurement and control instrument is higher, and is not suitable for miniaturization, and no image of Buddha ultrasonic wave densimeter 10 is equally mounted on medical oxygen generator
Control mainboard on, be only suitable for fixed setting and somewhere use.
And be to prevent the oxygen concentration monitor because long-time is using the Concentration Testing error occurred, it is additionally provided with to be directed to and be somebody's turn to do
The external calibration equipment of oxygen concentration monitor, it is intended to by being passed through Concentration Testing to oxygen concentration monitor every preset time
Correcting gas, to correct the Concentration Testing error that oxygen concentration monitor is likely to occur.It is set specifically, can be similar to temperature control box 20
The two calibration temperature set, the Concentration Testing correcting gas can select oxygen concentration dense for 100% high pure oxygen and oxygen
Degree is 20.9% mixing oxygen, and selects to be calibrated for preset time with 3 hours.Certainly, Concentration Testing correcting gas has
The oxygen concentration and preset time of body can select other parameters, with the particular/special requirement for meeting each producer and other influences
Factor herein and is not specifically limited.
In actual use, it is contemplated that an individual temperature control box 20 needs the behaviour for being carried out at the same time heating and cooling
Make, the excessive time may be consumed, to increase calibration efficiency, two sets, i.e., two can all be arranged in addition to information processing equipment
20 each self-sustaining of temperature control box, one constant calibration temperature, it is only necessary to whole after completing the testing process in one of case
It replaces to the temperature control box 20 of another temperature.But it such as needs to replace manually there is also other places needed to pay attention to simultaneously,
The appendix etc. for connecting each ultrasonic wave densimeter 10 in each temperature control box 20 is dismantled, needs to combine each side's face in practical situations
It rings combined factors to consider and select the most suitable scheme of oneself, herein and be not specifically limited.
Because situation is complicated, it can not enumerate and be illustrated, those skilled in the art should be able to recognize more the application
The basic skills principle combination actual conditions of offer may exist many examples, in the case where not paying enough creative works,
It should within the scope of protection of this application.
Each embodiment is described by the way of progressive in specification, the highlights of each of the examples are with other realities
Apply the difference of example, just to refer each other for identical similar portion between each embodiment.
Specific examples are used herein to illustrate the principle and implementation manner of the present application, and above example is said
It is bright to be merely used to help understand the present processes and its core concept.It should be pointed out that for the ordinary skill of the art
For personnel, under the premise of not departing from the application principle, can also to the application, some improvement and modification can also be carried out, these improvement
It is also fallen into the application scope of the claims with modification.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only that
A little elements, but also include the other elements being not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or equipment including element.
Claims (8)
1. a kind of oxygen concentration calibrating installation, which is characterized in that including：
The oxygen concentration of local environment is measured, and sends the ultrasonic wave densimeter for the measured oxygen concentration data for being analog signal
(10)；
Ultrasonic wave densimeter (10) described in predetermined number are provided with, are adjusted the temperature inside the box according to the temperature adjust instruction received
To the temperature control box (20) of target temperature；
It is connected with the ultrasonic wave densimeter (10), the outer input to ultrasonic wave densimeter (10) the transmission standard concentration oxygen
Mouth (21)；
It is connected with the ultrasonic wave densimeter (10), analog signal data is converted to the data converter of digital signal data
(30)；
It is connected with the temperature control box (20), the data converter (30) and information processing equipment (50), by the temperature
Adjust instruction is sent to the temperature control box (20), will be sent to described information processing for the measured oxygen concentration data of digital signal
The headend (40) of equipment (50)；
It is generated according to the information of input and issues corresponding temperature adjust instruction；It is received as the measured oxygen concentration number of digital signal
According to information processing equipment (50).
2. oxygen concentration calibrating installation according to claim 1, which is characterized in that the temperature control box (20) includes：
It is connected with the headend (40), extracts target temperature from the temperature adjust instruction received, and according to inspection
The actual temperature temperature for generating and sending heating signal or cooling signal corresponding with the temperature difference of the target temperature in the case measured
Detection device (22)；
It is connected with the output end of the temperature-detecting device (22), according to the heating signal received by the temperature in the temperature control box
Degree rises to the heat riser (23) of the target temperature；
It is connected with the output end of the temperature-detecting device (22), according to the cooling signal received by the temperature in the temperature control box
Degree is down to the heat sink (24) of the target temperature.
3. oxygen concentration calibrating installation according to claim 2, which is characterized in that further include：
Whether detection is passed through the normal concentration oxygen in the temperature control box (20) in the oxygen concentration for presetting oxygen concentration range
Monitor.
4. oxygen concentration calibrating installation according to claim 3, which is characterized in that further include：
It is connected with the oxygen concentration monitor, Concentration Testing correction is passed through to the oxygen concentration monitor every preset time
Gas, to correct the external calibration equipment for the Concentration Testing error that the oxygen concentration monitor occurs.
5. oxygen concentration calibrating installation according to claim 4, which is characterized in that the heat riser (23) and the drop
Warm device (24) is heat exchanging copper pipe.
6. oxygen concentration calibrating installation according to any one of claims 1 to 5, which is characterized in that the data converter
(30) it is specially RS232 data converters.
7. oxygen concentration calibrating installation according to claim 6, which is characterized in that the headend (40) is specially
USB3.0 transponders.
8. oxygen concentration calibrating installation according to claim 7, which is characterized in that described information processing equipment (50) is specific
For PC machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721509049.5U CN207611017U (en) | 2017-11-13 | 2017-11-13 | A kind of oxygen concentration calibrating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721509049.5U CN207611017U (en) | 2017-11-13 | 2017-11-13 | A kind of oxygen concentration calibrating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207611017U true CN207611017U (en) | 2018-07-13 |
Family
ID=62794376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721509049.5U Active CN207611017U (en) | 2017-11-13 | 2017-11-13 | A kind of oxygen concentration calibrating installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207611017U (en) |
-
2017
- 2017-11-13 CN CN201721509049.5U patent/CN207611017U/en active Active
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Address after: 611730 No. 48 Qingma Road, South Area of Chengdu Modern Industrial Port, Pidu District, Chengdu City, Sichuan Province Patentee after: Qianrui Medical Science and Technology (Chengdu) Co., Ltd. Address before: 611730 No. 48 Qingma Road, Southern Zone of Pixian Modern Industrial Port, Chengdu City, Sichuan Province Patentee before: Chatterton Bio Medical (Chengdu) Co. Ltd. |