CN219757449U - Drainage bag capacity monitoring device - Google Patents
Drainage bag capacity monitoring device Download PDFInfo
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- CN219757449U CN219757449U CN202320358890.8U CN202320358890U CN219757449U CN 219757449 U CN219757449 U CN 219757449U CN 202320358890 U CN202320358890 U CN 202320358890U CN 219757449 U CN219757449 U CN 219757449U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 62
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 210000002268 wool Anatomy 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 34
- 239000008280 blood Substances 0.000 description 6
- 210000004369 blood Anatomy 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 208000003322 Coinfection Diseases 0.000 description 1
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a drainage bag capacity monitoring device, which comprises a split box body, wherein two through holes penetrating through the inside are formed in the box body; two inflatable air bags are symmetrically arranged in the box body and are communicated through a hose; the hose is provided with an air inlet and an air outlet with an electromagnetic valve, the air inlet is movably connected with inflation equipment, and the air outlet is connected with a flow monitoring mechanism; the flow monitoring mechanism comprises a monitoring component and an alarm component which are connected. According to the utility model, the capacity of the disposable drainage bag can be monitored through the cooperation of the monitoring component and the inflatable bag, and the alarm component is used for alarming after the capacity of the drainage bag reaches a certain value, so that medical staff can timely process the drainage bag, the phenomenon that the drainage bag is easy to expand and break during use is avoided, and meanwhile, the device can be repeatedly used, and is safe and convenient to use and good in effect.
Description
Technical Field
The utility model relates to the technical field of drainage bag auxiliary equipment, in particular to a drainage bag capacity monitoring device.
Background
The drainage bag is generally used in the operation process, medical staff leads out the blood seepage and effusion in the body of a patient or in the local operation depth through a pipeline, and then uniformly collects and processes the blood seepage and effusion, so that the healing of wounds can be effectively promoted, and the recovery of illness state is facilitated; if the blood seepage or effusion generated in the operation cannot be led to the outside of the body in time, local effusion is easy to form, so that the healing speed after the operation is slowed down, and the secondary infection condition can occur. The existing drainage bag is provided with scale marks on the bag surface, but in actual use, the drainage bag is generally horizontally placed, the liquid capacity collected in the bag cannot be read quickly and accurately when in use, the drainage bag is firstly placed vertically, the liquid capacity collected in the bag can be read after the liquid in the drainage bag is concentrated, the use is complicated, the liquid filled in the drainage bag is difficult to be found in time, the phenomenon that the drainage bag is broken by expansion is easily generated, the blood seepage or the effusion collected in the drainage bag leaks out, the operation environment is polluted, operation tools can be polluted due to carelessness, and the operation success rate is influenced.
Chinese patent CN20192119.4 discloses a disposable intelligent drainage bag, comprising a drainage bag body, wherein the upper end of the drainage bag body is provided with a liquid inlet pipe and a horn, and the liquid inlet pipe is communicated with the inside of the drainage bag body; this technique is kept in the liquid through setting up the drainage bag body, conveniently to the collection and the emission of liquid, sets up the liquid volume that electronic display screen conveniently shows and collect, and alarm device can remind personnel through loudspeaker to the drainage bag user condition is in time looked over to the personnel, has avoided probably appearing in the drainage bag in the harm that the liquid too much leads to the drainage bag to rise the bag when using. However, the technology is improved on the basis of the original drainage bag, the drainage bag is an integral body, the drainage bag is used for guaranteeing the safety and reliability of treatment in operation, the content of the drainage bag is convenient to process, the phenomenon of cross infection in the drainage process is avoided, the drainage bag is a disposable product, and the technology is high in manufacturing cost and difficult to popularize and use as a disposable product.
Disclosure of Invention
Aiming at the defect that the traditional drainage bag is difficult to observe the actually collected liquid capacity when in use, the drainage bag is easy to expand and broken, and the improved disposable intelligent drainage bag has high cost, the utility model provides the drainage bag capacity monitoring device which has a simple structure, can adapt to the disposable drainage bag when in use, realizes the capacity monitoring of the drainage bag, is safe and sanitary and can be repeatedly used.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the drainage bag capacity monitoring device comprises a split box body, wherein two through holes penetrating through the inside are formed in the box body; two inflatable air bags are symmetrically arranged in the box body and are communicated through a hose; the hose is provided with an air inlet and an air outlet with an electromagnetic valve, the air inlet is movably connected with inflation equipment, and the air outlet is connected with a flow monitoring mechanism; the flow monitoring mechanism comprises a monitoring component and an alarm component which are connected.
The principle of the device is that the amount of discharged air is equal to the amount of liquid collected by the drainage bag, and in a normal state, the electromagnetic valves on the hoses are all in a closed state; the monitoring component of flow monitoring mechanism monitors the volume of gas outlet effluent to give alarm component with the data transmission that monitors, change the data that monitor into numerical value simultaneously and show, make things convenient for medical personnel to observe, and be equipped with the warning numerical value of gaseous outflow in the alarm component, sound when receiving alarm component data and surpassing the warning numerical value, in order to remind medical personnel in time to handle the drainage bag, prevent that the drainage bag from rising and breaking.
Further, the inflating device is a mini air pump. When the mini air pump is used, the mini air pump is opened to inflate the inflatable air bag, so that the inflatable air bag is convenient to use, the inflatable speed is high, the preparation of preoperative materials can be rapidly met, the mini air pump is small in size, and the mini air pump is convenient to store after being used.
Further, the monitoring component is an air flow sensor and consists of a monitoring pipe and a data display screen; the monitoring pipe is sleeved on the air outlet, and a data display screen is arranged on the side face of the monitoring pipe. The air flow sensor belongs to an existing mature detection element, and is used for monitoring the flow of air flowing out of the air outlet through the monitoring pipe, monitoring data are displayed through the display screen, and meanwhile, the monitoring data are transmitted to the alarm part, so that medical staff can conveniently check the air flow.
Further, the alarm component comprises a buzzer, a numerical comparator, a switch and a power supply which are connected in series to form a circuit; the numerical comparator is internally provided with an alarm numerical value and is connected with the monitoring component to receive the monitoring data of the monitoring component; the power supply is also connected with the numerical comparator. The power supply supplies power to the numerical comparator and a circuit where the buzzer is located respectively, when the intelligent drainage device is used, the switch is turned on firstly, the numerical comparator receives data monitored by the monitoring component at the moment and compares the data with the alarm value, if the received data is larger than the alarm value, the fact that liquid collected in the drainage bag is about to reach the upper limit capacity of the drainage bag is proved, the numerical comparator is turned on, the circuit is turned on, and the buzzer in the circuit sounds to remind medical staff of timely processing the drainage bag; the medical staff can be timely reminded to treat the drainage bag through the alarm component, so that the operation is not affected by the expansion of the drainage bag.
Further, the box body comprises an upper box body and a lower box body, wherein one end of the upper box body is connected with one end of the lower box body through a hinge, and the other end of the upper box body is connected with the other end of the lower box body through a connecting part; the two through holes are respectively arranged in the middle of the upper end face and the lower end face of the upper box body and the lower box body. The box body is divided into an upper box body and a lower box body, the structure is simple, the use is convenient, and the upper box body and the lower box body are matched through the hinge and the connecting part, so that the box body is convenient and stable to connect.
Further, the connecting component is any one of a connecting rope and a connecting buckle. When in use, the box bodies are connected together through the matching of the connecting ropes or the connecting buckles, and the connecting component has simple structure and is convenient to use.
Furthermore, each sharp corner outside the box body is provided with a shockproof rubber pad. The shock-proof tip on the box body can avoid collision damage phenomenon in the use process of the box body, so that the durability of the box body is improved, and meanwhile, when the box body falls, the shock-proof tip can absorb shock through the shock-proof rubber pad, so that the box body is prevented from being broken, and liquid in the drainage bag is prevented from leaking.
Further, the inflatable air bag and the box body are connected together through a magic tape; the magic tape comprises a round wool surface and a thorn wool surface, wherein the round wool surface is fixedly arranged on an inflatable air bag, and the thorn wool is fixedly arranged on the inner side of the box body. When the inflatable bag is used, the inflatable bag can be fixed in the box body through the matching of the round burr surface and the burr surface, the inflatable bag cannot slide when in use, the use effect is good, and the inflatable bag is connected with the box body by the magic tape, so that the inflatable bag is convenient to replace.
The application method of the utility model comprises the following steps:
when the device is put into the drainage bag, firstly, the box body is opened, the disposable drainage bag is put into the box body, the liquid inlet pipe and the liquid outlet pipe at the two ends of the disposable drainage bag respectively extend outwards through the through holes, then the electromagnetic valve at the air inlet of the hose is opened, the inflating equipment is started to suck air into the air inlet, then the air is input into the inflating air bag in the box body along the hose, so that the inflating air bag is inflated, after the inflating air bag is inflated, the electromagnetic valves at the inflating equipment and the air inlet are closed, and at the moment, the disposable drainage bag is clamped between the two inflating air bags in the box body; when drainage is carried out, the liquid inlet pipe of the disposable drainage bag of the device is placed at a position to be drained, then the electromagnetic valve at the liquid outlet is opened, blood seepage or effusion at the drainage position can enter the drainage bag along the liquid inlet pipe of the disposable drainage bag, at the moment, the drainage bag starts to expand after liquid inlet, the inflated disposable drainage bag presses the inflatable air bag, air in the inflatable air bag flows out of the inflatable air bag through the air outlet of the hose, when the air flows out of the inflatable air bag, the monitoring component of the flow monitoring mechanism connected to the air outlet can monitor the outflow of the air, and display monitoring data, when the outflow of the air exceeds the set warning value, the alarm component sounds to remind medical staff to replace the disposable drainage bag or to lead the liquid in the drainage bag to pass through the liquid outlet pipe of the drainage bag, so that the phenomenon of bag expansion and cracking occurs, when the operation is finished, the box body is directly opened, the drainage bag can be taken out to be uniformly recycled after the device is cleaned and disinfected.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
1. according to the utility model, the monitoring of the disposable drainage bag in operation is facilitated through the cooperation of the monitoring component and the inflatable bag, and the alarm component is used for alarming after the quantity of the drainage bag reaches a certain value, so that medical staff can timely process the drainage bag, the phenomenon that the drainage bag is easy to expand and break during use is avoided, and meanwhile, the device is safe and convenient to use, can be used repeatedly, and has a good use effect and is environment-friendly.
2. The mini air pump is convenient for the inflatable air bag to inflate, has high inflation speed and is convenient to store after being used; the air flow sensor is used as a monitoring component, so that the technology is mature and the use is convenient; the alarm component is matched with the buzzer through the numerical comparator, and when the monitoring data is larger than the warning numerical value, the circuit where the buzzer is located is connected, so that the buzzer alarms to remind medical staff to process the drainage bag, and the drainage bag is convenient to use and good in effect.
3. According to the utility model, the phenomenon of collision damage in the use process of the box body can be avoided through the shockproof rubber pad arranged outside the box body, so that the liquid in the drainage bag is further prevented from leaking in the use process; the inflatable air bag is connected with the box body through the magic tape, so that the inflatable air bag is convenient to use and replace.
Drawings
Fig. 1 is a schematic perspective view of a drainage bag capacity monitoring device according to the present utility model.
FIG. 2 is a schematic illustration of the connection between an inflatable bladder and a hose within a drainage bag capacity monitoring device of the present utility model.
Fig. 3 is an internal circuit diagram of an alarm component of a drainage bag capacity monitoring device of the present utility model.
The attached drawings are identified:
the device comprises a box body-1, a through hole-11, an upper box body-12, a lower box body-13, a shockproof rubber pad-14, an inflatable airbag-2, a hose-21, an air inlet-211, an air outlet-212, an electromagnetic valve-3, an inflatable device-4, a flow monitoring mechanism-5, a monitoring part-51, a monitoring pipe-511, a data display screen-512, an alarm part-52, a buzzer-521, a numerical comparator-522, a switch-523 and a power supply-524.
Description of the embodiments
The utility model is further described below with reference to the accompanying drawings.
Example 1: the drainage bag capacity monitoring device comprises a split box body 1, wherein two through holes 11 penetrating through the inside are formed in the box body 1; two inflatable air bags 2 are symmetrically arranged in the box body 1, and the two inflatable air bags 2 are communicated through a hose 21; an air inlet 211 and an air outlet 212 of the electromagnetic valve 3 are arranged on the hose 21, the air inlet 211 is movably connected with the air charging equipment 4, and the air outlet 212 is connected with the flow monitoring mechanism 5; the flow monitoring mechanism 5 comprises a monitoring part 51 and an alarm part 52 which are connected.
The principle of the device is that the amount of discharged air is equal to the amount of liquid collected by the drainage bag, and in a normal state, the electromagnetic valve 3 on the hose 21 is in a closed state; the monitoring component 51 of the flow monitoring mechanism 5 monitors the amount of the gas flowing out of the gas outlet 212, transmits the monitored data to the alarm component 52, converts the monitored data into a numerical value to be displayed, facilitates the observation of medical staff, and the alarm component 52 is internally provided with an alarm numerical value of the gas outflow, and sounds when the data of the alarm component 52 is received to exceed the alarm numerical value, so that the medical staff is reminded of timely processing the drainage bag, and the drainage bag is prevented from being broken.
When the device is put into a drainage bag, firstly, the box body 1 is opened, the disposable drainage bag is put into the box body 1, the liquid inlet pipe and the liquid outlet pipe at the two ends of the disposable drainage bag extend outwards through the through holes 11 respectively, then the electromagnetic valve 3 at the air inlet 211 of the hose 21 is opened, the inflating equipment 4 is started, air is pumped into the air inlet 211, then the air is input into the inflating air bag 2 in the box body 1 along the hose 21, the inflating air bag 2 is inflated, the electromagnetic valve 3 at the inflating equipment 4 and the air inlet 211 is closed after the inflating of the inflating air bag 2 is completed, and at the moment, the disposable drainage bag is clamped between the two inflating air bags 2 in the box body 1; when drainage is carried out, the liquid inlet pipe of the disposable drainage bag of the device is placed at a position to be drained, then the electromagnetic valve 3 at the liquid outlet is opened, blood seepage or effusion at the drainage position can enter the drainage bag along the liquid inlet pipe of the disposable drainage bag, at the moment, the drainage bag starts to expand after liquid inlet, the inflated disposable drainage bag presses the inflatable air bag 2, air in the inflatable air bag 2 flows out of the inflatable air bag 2 through the air outlet 212 of the hose 21, when gas flows out of the inflatable air bag 2, the monitoring component 51 of the flow monitoring mechanism 5 connected to the air outlet 212 can monitor the outflow of the gas, monitoring data are displayed, when the outflow of the gas exceeds the set warning value, the alarm component 52 sounds, and medical staff is reminded of replacing the disposable drainage bag or enabling the liquid in the drainage bag to pass through the liquid outlet pipe of the drainage bag, so as to avoid the phenomenon of expanding and cracking of the drainage bag, when the disposable drainage bag is arranged after operation, the box body 1 is directly opened to take out the drainage bag for unified recovery treatment, and the device can be recycled after cleaning.
Example 2: the difference from embodiment 1 is that the air charging device 4 is a mini air pump. When the mini air pump is used, the inflatable air bag 2 can be inflated, the use is convenient, the inflation speed is high, the preparation of preoperative materials can be rapidly met, the mini air pump is small in size, and the mini air pump is convenient to store after the use is completed.
The monitoring component 51 is an air flow sensor and consists of a monitoring tube 511 and a data display screen 512; the monitoring tube 511 is sleeved on the air outlet 212, and a data display screen 512 is arranged on the side face of the monitoring tube 511. The air flow sensor belongs to the existing mature detection element, and is used for carrying out flow monitoring on air flowing through the air outlet 212 through the monitoring tube 511, monitoring data are displayed through the display screen, and meanwhile, the monitoring data are transmitted to the alarm part 52, so that medical staff can conveniently check the air flow.
The working principle of this embodiment is the same as that of embodiment 1.
Example 3: the difference from embodiment 2 is that the alarm part 52 includes a buzzer 521, a numerical comparator 522, a switch 523, and a power source 524, which are connected in series to form a circuit; the numerical comparator 522 is provided with an alarm numerical value, and the numerical comparator 522 is connected with the monitoring component 51 to receive the monitoring data of the monitoring component 51; the power supply 524 is also connected to the value comparator 522. The power supply 524 supplies power to the circuits where the numerical comparator 522 and the buzzer 521 are located respectively, when the medical care instrument is used, the switch 523 is turned on firstly, the numerical comparator 522 receives data monitored by the monitoring component 51 and compares the data with the alarm value, if the received data is larger than the alarm value, the liquid collected in the drainage bag is proved to reach the upper limit capacity of the drainage bag, the numerical comparator 522 is turned on, and the buzzer 521 in the circuit sounds to remind medical care personnel to process the drainage bag in time; the medical staff can be timely reminded of treating the drainage bag through the alarm component 52 so as not to influence operation by the expansion of the drainage bag.
The inflatable air bag 2 and the box body 1 are connected together through a magic tape; the magic tape comprises a round wool surface and a thorn wool surface, wherein the round wool surface is fixedly arranged on an inflatable air bag 2, and the thorn wool is fixedly arranged on the inner side of the box body 1. During the use, through the cooperation of round hair face and thorn hair face is pasted to the magic, can make the inflatable balloon 2 fix inside box body 1, and inflatable balloon 2 can not slide when using, excellent in use effect, and inflatable balloon 2 adopts the magic to paste to be connected with box body 1, conveniently changes.
The working principle of this embodiment is the same as that of embodiment 2.
Example 4: the difference from the embodiment 1 is that the box body 1 comprises an upper box body 12 and a lower box body 13, wherein one end of the upper box body 12 is connected with one end of the lower box body 13 through a hinge, and the other end is connected together through a connecting part; the two through holes 11 are respectively arranged in the middle of the upper end face and the lower end face of the upper box body 12 and the lower box body 13. The box body 1 is divided into an upper box body 12 and a lower box body 13, the structure is simple, the use is convenient, and the upper box body 12 and the lower box body 13 are matched through a hinge and a connecting part, so that the box body 1 is convenient and stable to connect.
The connecting part is any one of a connecting rope and a connecting buckle. When in use, the box body 1 is connected together through the cooperation of the connecting rope or the connecting buckle, and the connecting part has simple structure and is convenient to use.
And shockproof rubber pads 14 are arranged at the sharp corners outside the box body 1. The shock-proof tip on the box body 1 can avoid the phenomenon of collision damage in the use process of the box body 1, so that the durability of the box body 1 is improved, and meanwhile, when the box body 1 falls down, the shock-proof tip can absorb shock through the shock-proof rubber pad 14, so that the box body 1 is prevented from being broken, and liquid in the drainage bag is prevented from leaking.
The working principle of this embodiment is the same as that of embodiment 1.
In the description of the present utility model, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.
Claims (8)
1. A drainage bag capacity monitoring device, its characterized in that: comprises a split box body (1), wherein two through holes (11) penetrating the inside are arranged on the box body (1); two inflatable air bags (2) are symmetrically arranged in the box body (1), and the two inflatable air bags (2) are communicated through a hose (21); an air inlet (211) and an air outlet (212) of the electromagnetic valve (3) are arranged on the hose (21), the air inlet (211) is movably connected with the air charging equipment (4), and the air outlet (212) is connected with the flow monitoring mechanism (5); the flow monitoring mechanism (5) comprises a monitoring component (51) and an alarm component (52) which are connected.
2. The drainage bag capacity monitoring device of claim 1, wherein: the inflating equipment (4) is a mini air pump.
3. The drainage bag capacity monitoring device of claim 1, wherein: the monitoring component (51) is an air flow sensor and consists of a monitoring pipe (511) and a data display screen (512); the monitoring tube (511) is sleeved on the air outlet (212), and a data display screen (512) is arranged on the side face of the monitoring tube (511).
4. The drainage bag capacity monitoring device of claim 1, wherein: the alarm part (52) comprises a buzzer (521), a numerical comparator (522), a switch (523) and a power supply (524) which are connected in series to form a circuit; the numerical comparator (522) is internally provided with an alarm numerical value, and the numerical comparator (522) is connected with the monitoring component (51) and receives the monitoring data of the monitoring component (51); the power supply (524) is also connected to the value comparator (522).
5. The drainage bag capacity monitoring device of claim 1, wherein: the box body (1) comprises an upper box body (12) and a lower box body (13), wherein one end of the upper box body (12) is connected with one end of the lower box body (13) through a hinge, and the other end of the upper box body is connected with the other end of the lower box body through a connecting part; the two through holes (11) are respectively arranged in the middle of the upper end face and the lower end face of the upper box body (12) and the lower box body (13).
6. The drainage bag capacity monitoring device of claim 5, wherein: the connecting part is any one of a connecting rope and a connecting buckle.
7. The drainage bag capacity monitoring device of claim 5, wherein: and shockproof rubber pads (14) are arranged at the sharp corners outside the box body (1).
8. The drainage bag capacity monitoring device of claim 1, wherein: the inflatable air bag (2) and the box body (1) are connected together through a magic tape; the magic tape comprises a round wool surface and a thorn wool surface, wherein the round wool surface is fixedly arranged on an inflatable air bag (2), and the thorn wool is fixedly arranged on the inner side of the box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320358890.8U CN219757449U (en) | 2023-03-02 | 2023-03-02 | Drainage bag capacity monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320358890.8U CN219757449U (en) | 2023-03-02 | 2023-03-02 | Drainage bag capacity monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219757449U true CN219757449U (en) | 2023-09-26 |
Family
ID=88088202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320358890.8U Active CN219757449U (en) | 2023-03-02 | 2023-03-02 | Drainage bag capacity monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219757449U (en) |
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2023
- 2023-03-02 CN CN202320358890.8U patent/CN219757449U/en active Active
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