CN220877480U - Heat-moisture exchanger - Google Patents
Heat-moisture exchanger Download PDFInfo
- Publication number
- CN220877480U CN220877480U CN202420646672.9U CN202420646672U CN220877480U CN 220877480 U CN220877480 U CN 220877480U CN 202420646672 U CN202420646672 U CN 202420646672U CN 220877480 U CN220877480 U CN 220877480U
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- heat
- interface
- humidity
- atomizer
- moisture
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- 239000006199 nebulizer Substances 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 20
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 11
- 238000004891 communication Methods 0.000 description 8
- 239000012530 fluid Substances 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000004199 lung function Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
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- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The utility model discloses a heat-humidity exchanger, which comprises a shell and a passage switching unit arranged in the shell, wherein a respirator interface, a patient end interface and an atomizer interface are arranged on the shell, the passage switching unit comprises a heat-humidity exchange part, an atomizer connecting part and a push-pull rod which are fixedly connected, and the passage switching unit is provided with a first position and a second position relative to the shell; when the passage switching unit is at the first position, the heat-moisture exchange part is communicated with the respirator interface and the patient interface, and the heat-moisture exchanger is used for heat-moisture exchange; when the passage switching unit is at the second position, the atomizer connecting part is communicated with the respirator interface, the patient end interface and the atomizer interface, and the heat-humidity exchanger is not used for heat-humidity exchange; the push-pull rod is used for switching the passage switching unit to the first position or the second position. The heat-humidity exchanger is simple in structure, and can realize switching between a heat-humidity exchange mode and an atomizer connection mode on the premise of not disconnecting a breathing circuit.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to a heat-moisture exchanger.
Background
A heat and moisture exchanger, or heat and moisture exchanger (Heat and moisture exchanger, HME), commonly known as the "artificial nose", includes a housing in communication with a breathing circuit and a heat and moisture exchange medium or material contained in the housing. HME absorbs the moisture and heat exhaled by the patient through the heat and moisture exchange medium, and brings the moisture and heat back into the airway as the inhaled gas passes through the heat and moisture exchanger. HME can improve lung function and reduce incidence of pulmonary infection.
However, in the case of HME in the breathing circuit, there is difficulty in introducing aerosolized drug particles into the breathing circuit via the nebulizer, and the drug particles do not readily pass through the heat-moisture exchange medium, and may even clog the heat-moisture exchange medium of the HME, resulting in increased resistance of the HME. The HME device with bypass has a bypass structure that does not pass through the heat-moisture exchange medium, but is complex in structure, difficult to operate, and high in cost. Thus, at present, when introducing nebulized drugs clinically, it is often necessary to remove the HME device from the respiratory circuit, which increases the workload of the healthcare staff and also easily causes environmental pollution to the HME device.
Disclosure of utility model
The utility model aims to solve the technical problem of providing a heat-humidity exchanger which can realize the switching of a heat-humidity exchange passage and an atomizer passage on the premise of not disconnecting a breathing circuit.
In order to solve the technical problems, the utility model provides a heat-humidity exchanger, which comprises a shell and a passage switching unit arranged in the shell, wherein a respirator interface, a patient end interface and an atomizer interface are arranged on the shell, the passage switching unit comprises a heat-humidity exchange part and an atomizer connecting part, and the passage switching unit is provided with a first position and a second position relative to the shell;
When the passage switching unit is in the first position, the heat-humidity exchange part is communicated with the respirator interface and the patient interface, and the heat-humidity exchanger is used for heat-humidity exchange;
When the passage switching unit is in the second position, the atomizer connecting portion is communicated with the respirator interface, the patient end interface and the atomizer interface, the atomizer interface is used for connecting an atomizer, and the heat-humidity exchanger is not used for heat-humidity exchange.
As an improvement of the scheme, the heat-moisture exchange part comprises a heat-moisture exchange pipe body and a heat-moisture exchange medium; the heat-moisture exchange tube body is provided with a heat-moisture exchange cavity penetrating through the heat-moisture exchange tube body, the heat-moisture exchange medium is arranged in the heat-moisture exchange cavity, and when the passage switching unit is at the first position, the heat-moisture exchange cavity is communicated with the respirator interface and the patient interface.
As an improvement of the above scheme, the connection surfaces of the heat-moisture exchange tube body, the respirator interface and the patient end interface are respectively recessed inwards along the diameter direction so as to form a cavity between the heat-moisture exchange tube body and the shell.
As an improvement of the scheme, the heat-moisture exchange medium is cylindrical, and the diameter of the heat-moisture exchange medium is matched with the diameter of the heat-moisture exchanger.
As an improvement of the scheme, the atomizer connecting part comprises a three-way pipe fitting, and three outlets of the three-way pipe fitting are respectively communicated with the respirator interface, the patient end interface and the atomizer interface.
As an improvement of the above, the passage switching unit further includes a push-pull lever, and the passage switching unit can be switched to the first position or the second position by operating the push-pull lever. Preferably, the heat-moisture exchange part, the atomizer connecting part and the push-pull rod are fixedly connected.
As an improvement of the scheme, the heat-moisture exchange part is fixedly connected with the atomizer connecting part, and the push-pull rod is fixedly connected with the heat-moisture exchange part or the atomizer connecting part.
As an improvement of the scheme, one end of the shell is a closed end, the other end of the shell is an open end, the heat-moisture exchange part is arranged on one side close to the closed end, the atomizer connecting part is arranged on one side close to the open end, the push-pull rod is fixedly connected with the atomizer connecting part, and the push-pull rod extends out of the shell through the open end.
As an improvement of the scheme, a cover plate is arranged on one side, connected with the connecting part of the atomizer, of the push-pull rod, and the connecting part of the atomizer is arranged between the heat-moisture exchange part and the cover plate.
As an improvement of the above scheme, a sealing assembly is provided between the passage switching unit and the housing, and the sealing assembly includes a first sealing assembly provided between the cover plate and the housing, a second sealing assembly provided between one end of the heat-moisture exchange portion and the housing, and a third sealing assembly provided between the other end of the heat-moisture exchange portion and the housing.
As an improvement of the scheme, the opening end of the shell is provided with a limiting piece, the limiting piece is annular, the limiting piece is rotationally connected with the shell, the limiting piece is provided with a push-pull rod locking piece, a rod handle of the push-pull rod is provided with a first locking groove and a second locking groove, and the push-pull rod locking piece is used for locking the passage switching unit at the first position or the second position through being clamped with the first locking groove or the second locking groove. Specifically, the inner ring of the limiting part protrudes inwards along the diameter direction to form the push-pull rod locking part, the rod handle of the push-pull rod is respectively recessed inwards to form the first locking groove and the second locking groove, and the shapes of the first locking groove and the second locking groove are matched with the shape of the push-pull rod locking part.
As an improvement of the above-mentioned scheme, when the push-pull rod locking piece is clamped with the first locking groove, the passage switching unit is locked at the first position; when the push-pull rod locking piece is clamped with the second locking groove, the passage switching unit is locked at the second position.
As an improvement of the scheme, the respirator interface, the patient end interface and the atomizer interface are arranged on the same circumference of the shell, and the arrangement direction of the atomizer interface is perpendicular to the arrangement direction of the respirator interface and the patient end interface.
As an improvement of the scheme, the atomizer interface is provided with a sealing cap.
The heat-moisture exchanger has the following beneficial effects:
The switching of the heat-moisture exchange passage and the atomizer connecting passage can be realized by pushing and pulling the passage switching unit, and the heat-moisture exchange mode and the atomizer connecting mode can both realize independent operation and do not interfere with each other. The heat-humidity exchanger provided by the utility model has the advantages that the structure is simple, the operation is simple and convenient when the passage is switched, and the breathing circuit is not required to be disconnected and the heat-humidity exchange device is not required to be removed when the passage is atomized, so that the heat-humidity exchange device is prevented from being polluted, the treatment effect is ensured, the efficiency is improved, and the cost is reduced.
Drawings
FIG. 1 is a schematic view of a heat-moisture exchanger of the present utility model in a heat-moisture exchange mode;
FIG. 2 is a left side cross-sectional view of a heat and moisture exchanger of the present utility model in a heat and moisture exchange mode;
FIG. 3 is a schematic view of the heat and moisture exchanger of the present utility model in a nebulizer connected mode;
FIG. 4 is a left side cross-sectional view of a heat and moisture exchanger of the present utility model in a nebulizer connected mode;
fig. 5 is an exploded view of a heat and moisture exchanger of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent. It is only stated that the terms of orientation such as up, down, left, right, front, back, inner, outer, etc. used in this document or the imminent present utility model, are used only with reference to the drawings of the present utility model, and are not meant to be limiting in any way.
As shown in fig. 1 to 5, the embodiment of the utility model provides a heat-humidity exchanger, which comprises a shell 1 and a passage switching unit 2 arranged in the shell 1, wherein a respirator interface 11, a patient end interface 12 and an atomizer interface 13 are arranged on the shell 1, the passage switching unit 2 comprises a heat-humidity exchange part 21, an atomizer connecting part 22 and a push-pull rod 23, one end of the heat-humidity exchange part 21 is fixedly connected with one end of the atomizer connecting part 22, one end of the push-pull rod 23 is fixedly connected with the heat-humidity exchange part 21 or the atomizer connecting part 22, the heat-humidity exchange part 21 and the atomizer connecting part 22 are arranged on the same axis, and can move in a straight line in the shell 1 under the drive of the push-pull rod 23 so as to realize the switching of a heat-humidity exchange mode and an atomizer connecting mode.
As shown in fig. 5, there is no fluid communication between the heat and moisture exchange portion 21 and the atomizer connection portion 22. The passage switching unit 2 has a first position and a second position with respect to the housing 1;
When the passage switching unit 2 is in the first position, the heat-humidity exchanging portion 21 is in communication with the respirator interface 11 and the patient-side interface 12, and the heat-humidity exchanger is used for heat-humidity exchanging;
When the passage switching unit 2 is in the second position, the nebulizer connecting part 22 is communicated with the respirator interface 11, the patient end interface 12 and the nebulizer interface 13, the nebulizer interface 13 is used for connecting a nebulizer, the nebulizer can be connected into a breathing circuit through the nebulizer interface 13, and the heat-humidity exchanger is not used for heat-humidity exchange;
When the passage switching unit 2 is in the first position, the heat-humidity exchanger is in a heat-humidity exchange mode, and when the passage switching unit 2 is in the second position, the heat-humidity exchanger is in an atomizer connection mode. The push-pull rod 23 can drive the passage switching unit 2 to move, so that the passage switching unit 2 is switched to the first position or the second position, and the heat-humidity exchanger is switched to a heat-humidity exchange mode or an atomizer connection mode.
In order to better realize the push-pull of the passage switching unit 2 in the shell 1 and the conversion of the working modes, one end of the shell 1 is a closed end 14, the other end is an open end 15, the passage switching unit 2 extends into the shell 1 through the open end 15, the heat and moisture exchange part 21 is arranged on the side close to the closed end 14, the atomizer connecting part 22 is arranged on the side close to the open end 15, and the push-pull rod 23 is fixedly connected with one end of the atomizer connecting part 22.
In an alternative embodiment, the heat-moisture exchanging portion 21 and the atomizer connecting portion 22 may be interchanged, i.e. the atomizer connecting portion 22 is disposed on the side close to the closed end 14, the heat-moisture exchanging portion 21 is disposed on the side close to the open end 15, and the push-pull rod 23 is fixedly connected to one end of the heat-moisture exchanging portion 21.
Specifically, the heat-humidity exchange portion 21 includes a heat-humidity exchange tube 211 and a heat-humidity exchange medium 212 provided inside the heat-humidity exchange tube 211. Preferably, the heat-moisture exchange tube body 211 is cylindrical, a heat-moisture exchange cavity 213 penetrating the heat-moisture exchange tube body 211 is formed in the diameter direction of the heat-moisture exchange tube body 211, the heat-moisture exchange cavity 213 can be simultaneously communicated with the respirator interface 11 and the patient end interface 12, but is not communicated with the atomizer interface 13, and the heat-moisture exchange medium 212 is connected into a breathing circuit, and the heat-moisture exchanger is used for heat-moisture exchange. The diameter of the heat and moisture exchange chamber 213 is greater than the diameters of the ventilator interface 11 and the patient end interface 12 to accommodate a sufficient amount of heat and moisture exchange medium.
For better heat and humidity exchange, the connection surfaces of the heat and humidity exchange tube 211 and the respirator interface 11 and the patient-end interface 12 are respectively recessed inward in the diameter direction to form a cavity 214 between the heat and humidity exchange tube 211 and the housing 1, thereby improving heat and humidity exchange efficiency.
Preferably, the heat-moisture exchange medium 212 is cylindrical and is arranged inside the heat-moisture exchange cavity 213, and the diameter of the heat-moisture exchange medium 212 is adapted to the diameter of the heat-moisture exchange cavity 213, so as to ensure the heat-moisture exchange effect.
The nebulizer connection 22 comprises a communication chamber that can communicate simultaneously with the ventilator interface 11, the patient-end interface 12 and the nebulizer interface 13. Specifically, the atomizer connecting portion 22 may be a three-way pipe fitting, the side, connected to the atomizer connecting portion 22, of the push-pull rod 23 is provided with a cover plate 231, the three-way pipe fitting is disposed between the heat-moisture exchange portion 21 and the cover plate 231, and three outlets of the three-way pipe fitting are respectively communicated with the respirator interface 11, the patient end interface 12 and the atomizer interface 13. In order to ensure the tightness of the working chamber in different working modes, a sealing assembly is arranged between the passage switching unit 2 and the housing 1, and the sealing assembly comprises a first sealing assembly 31 arranged between the cover plate 231 and the housing 1, a second sealing assembly 32 arranged between one end of the heat and moisture exchange tube 211, which is close to the atomizer connection part, and the housing 1, and a third sealing assembly 33 arranged between the other end of the heat and moisture exchange tube 211 and the housing 1. The sealing assembly ensures the sealing of the working cavity in the heat-moisture exchange and atomization process, avoids air leakage and ensures the independent operation of the heat-moisture exchange and atomization.
The open end 15 of the shell 1 is provided with a limiting piece 4, the limiting piece 4 is annular and is rotationally connected with the shell 1, and the arrangement of the limiting piece 4 ensures that the heat and moisture exchange part 21 and the atomizer connecting part 22 are always positioned in the shell 1. The inner ring of the limiting piece 4 protrudes inwards along the diameter direction to form a push-pull rod locking piece 41, a rod handle of the push-pull rod 23 is inwards recessed to form a first locking groove 232 and a second locking groove 233, the shapes of the first locking groove 232 and the second locking groove 233 are matched with those of the push-pull rod locking piece 41, when the push-pull rod locking piece 41 is clamped in the first locking groove 232 or the second locking groove 233, the passage switching unit 2 is in a locking state, and the heat-moisture exchanger is used for carrying out heat-moisture exchange or connecting an atomizer to avoid false touch or accidental switching of working modes due to external environment influence; when the push-pull rod locking piece 41 is released from the clamping connection with the first locking groove 232 and the second locking groove 233, the passage switching unit 2 is in an unlocking state, and the working mode can be switched.
Specifically, the distance between the center of the passage of the atomizer connecting portion 22 and the first locking groove 232 is equal to the distance between the center of the respirator interface 11 and the open end 15 of the housing 1, and the distance between the center of the heat and moisture exchanging portion 21 and the second locking groove 233 is equal to the distance between the center of the respirator interface 11 and the open end 15 of the housing 1, and by defining the positions of the first locking groove 232 and the second locking groove 233, the unobstructed passage under different operating conditions is ensured.
As shown in fig. 1, 2 and 5, when the push-pull rod locking member 41 is snapped into engagement with the first locking groove 232, the heat and humidity exchange chamber containing the heat and humidity exchange medium is in communication with the ventilator interface 11 and the patient-side interface 12, and the heat and humidity exchanger is in the heat and humidity exchange mode. As shown in fig. 3, 4 and 5, when the push-pull rod locking member 41 is engaged with the second locking groove 233, the three-way pipe member of the nebulizer connection portion 22 is communicated with the ventilator interface 11, the patient end interface 12 and the nebulizer interface 13, and the heat-moisture exchanger is in the nebulizer connection mode, and the nebulizer is connected to the nebulizer interface 13, so that the nebulizer is connected to the breathing circuit.
In order to facilitate the switching and connection of the working channels, the ventilator interface 11, the patient-end interface 12 and the nebulizer interface 13 are arranged on the same circumference of the housing 1, and the extending direction of the nebulizer interface 13 is perpendicular to the extending direction of the ventilator interface 11 and the patient-end interface 12.
In some embodiments, the nebulizer interface 13 is provided with a sealing cap (not shown in the figures) for preventing the nebulizer interface from communicating with the outside in the case that the nebulizer interface is not connected to the nebulizer. When atomization is needed, the atomizer interface sealing cap is taken down to connect the atomizer at the atomizer interface.
Preferably, the heat and humidity exchange chamber is not in communication with the atomizer interface, such that even if the atomizer remains connected to the atomizer interface, the heat and humidity exchange chamber is not in communication with the atomizer, which cannot interfere with the heat and humidity exchange process.
The working principle of the device is as follows:
The heat-moisture exchange portion 21 or the atomizer connection portion 22 in the passage switching unit 2 can be communicated with the breathing circuit through the interface on the housing 1 by moving the push-pull rod 23. The push-pull rod 23 is moved until the cover plate 231 abuts against the limiting piece 4, the push-pull rod locking piece 41 is clamped with the first locking groove 232, at the moment, the heat-moisture exchange portion 21 is communicated with the respirator interface 11 and the patient end interface 12 simultaneously, the device works in the heat-moisture exchange mode, the fluid passage passes through the heat-moisture exchange medium 212, the atomizer interface 13 is preferably not communicated with the fluid passage, and the working state is shown in fig. 1 and 2. When the working mode needs to be switched, the locking of the push-pull rod locking piece 41 and the first locking groove 232 is released, the push-pull rod 23 is moved until one end of the heat-moisture exchange portion 21 is abutted against the closed end 14 of the shell 1, the push-pull rod locking piece 41 is clamped with the second locking groove 233, at the moment, the atomizer connecting portion 22 is simultaneously communicated with the respirator interface 11, the patient end interface 12 and the atomizer interface 13, the device works in the atomizer connecting mode, the respirator interface 11, the patient end interface 12 and the atomizer interface 13 are in fluid communication, the atomizer can be connected into a breathing circuit at the atomizer interface 13, fluid does not pass through the heat-moisture exchange medium 212, and the working state is shown in fig. 3 and 4. The push-pull rod locking piece 41 is unlocked from the second locking groove 233, and the push-pull rod 23 is moved to return to the heat-moisture exchange mode again.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.
Claims (9)
1. The heat-humidity exchanger is characterized by comprising a shell and a passage switching unit arranged in the shell, wherein a respirator interface, a patient end interface and an atomizer interface are arranged on the shell, the passage switching unit comprises a heat-humidity exchange part, an atomizer connecting part and a push-pull rod which are fixedly connected, and the passage switching unit is provided with a first position and a second position relative to the shell;
When the passage switching unit is in the first position, the heat-humidity exchange part is communicated with the respirator interface and the patient interface, and the heat-humidity exchanger is used for heat-humidity exchange;
When the passage switching unit is at the second position, the atomizer connecting part is communicated with the respirator interface, the patient end interface and the atomizer interface, the atomizer interface is used for connecting an atomizer, and the heat-humidity exchanger is not used for heat-humidity exchange;
The push-pull rod is used for switching the passage switching unit to the first position or the second position.
2. The heat and humidity exchanger as claimed in claim 1 wherein said heat and humidity exchange portion comprises a heat and humidity exchange tube and a heat and humidity exchange medium; the heat-moisture exchange tube body is provided with a heat-moisture exchange cavity penetrating through the heat-moisture exchange tube body, the heat-moisture exchange medium is arranged in the heat-moisture exchange cavity, and when the passage switching unit is at the first position, the heat-moisture exchange cavity is communicated with the respirator interface and the patient interface.
3. The heat and humidity exchanger of claim 1 wherein the nebulizer connection comprises a three-way tube having three outlets for communicating with the ventilator interface, the patient end interface, and the nebulizer interface, respectively.
4. The heat and humidity exchanger as claimed in claim 1 wherein said heat and humidity exchange portion is fixedly connected to said atomizer connection portion and said push-pull rod is fixedly connected to said heat and humidity exchange portion or said atomizer connection portion.
5. The heat and humidity exchanger as recited in claim 4 wherein one end of said housing is a closed end and the other end is an open end, said heat and humidity exchange portion is disposed on a side adjacent said closed end, said atomizer connecting portion is disposed on a side adjacent said open end, said push-pull rod is fixedly connected to said atomizer connecting portion, and said push-pull rod extends out of said housing through said open end.
6. The heat and moisture exchanger as set forth in claim 5, wherein a cover plate is provided on a side of the push-pull rod connected to the atomizer connecting portion, and the atomizer connecting portion is provided between the heat and moisture exchanging portion and the cover plate.
7. The heat and humidity exchanger as claimed in claim 6 wherein a sealing assembly is provided between the passage switching unit and the housing, the sealing assembly including a first sealing assembly provided between the cover plate and the housing, a second sealing assembly provided between one end of the heat and humidity exchange portion and the housing, and a third sealing assembly provided between the other end of the heat and humidity exchange portion and the housing.
8. The heat and moisture exchanger as set forth in claim 5, wherein the open end of the housing is provided with a stopper, the stopper is ring-shaped, the stopper is rotatably connected with the housing, the stopper is provided with a push-pull rod locking member, a first locking groove and a second locking groove are provided on a rod handle of the push-pull rod, and the push-pull rod locking member is used for locking the passage switching unit at the first position or the second position by being clamped with the first locking groove or the second locking groove.
9. The heat and humidity exchanger of claim 1 wherein the ventilator interface, patient end interface and nebulizer interface are disposed on the same circumference of the housing, the nebulizer interface extending in a direction perpendicular to the ventilator interface and patient end interface extending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420646672.9U CN220877480U (en) | 2024-04-01 | 2024-04-01 | Heat-moisture exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420646672.9U CN220877480U (en) | 2024-04-01 | 2024-04-01 | Heat-moisture exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220877480U true CN220877480U (en) | 2024-05-03 |
Family
ID=90878449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420646672.9U Active CN220877480U (en) | 2024-04-01 | 2024-04-01 | Heat-moisture exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220877480U (en) |
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2024
- 2024-04-01 CN CN202420646672.9U patent/CN220877480U/en active Active
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