CN217119073U - Multifunctional nasopharynx air duct - Google Patents
Multifunctional nasopharynx air duct Download PDFInfo
- Publication number
- CN217119073U CN217119073U CN202122976812.8U CN202122976812U CN217119073U CN 217119073 U CN217119073 U CN 217119073U CN 202122976812 U CN202122976812 U CN 202122976812U CN 217119073 U CN217119073 U CN 217119073U
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- Prior art keywords
- pipe
- air bag
- phlegm
- section
- airway tube
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- 210000001989 nasopharynx Anatomy 0.000 title abstract description 12
- 206010062717 Increased upper airway secretion Diseases 0.000 claims abstract description 41
- 208000026435 phlegm Diseases 0.000 claims abstract description 41
- 206010036790 Productive cough Diseases 0.000 claims abstract description 36
- 239000007924 injection Substances 0.000 claims abstract description 36
- 238000002347 injection Methods 0.000 claims abstract description 36
- 208000024794 sputum Diseases 0.000 claims abstract description 35
- 210000003802 sputum Anatomy 0.000 claims abstract description 35
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- 239000010902 straw Substances 0.000 claims description 13
- 238000009825 accumulation Methods 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 7
- 238000012806 monitoring device Methods 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000002627 tracheal intubation Methods 0.000 abstract description 17
- 210000003437 trachea Anatomy 0.000 abstract description 14
- 230000000007 visual effect Effects 0.000 abstract description 6
- 208000027418 Wounds and injury Diseases 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 5
- 208000014674 injury Diseases 0.000 abstract description 5
- 230000000474 nursing effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000241 respiratory effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000028327 secretion Effects 0.000 description 4
- 210000004400 mucous membrane Anatomy 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 210000003928 nasal cavity Anatomy 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 210000002345 respiratory system Anatomy 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 206010011409 Cross infection Diseases 0.000 description 1
- 208000009481 Laryngeal Edema Diseases 0.000 description 1
- 206010023845 Laryngeal oedema Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 210000004704 glottis Anatomy 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses a multifunctional nasopharynx air duct, which comprises an air duct, an air bag, a sputum suction pipe negative pressure joint, a gas monitoring pipe, a corrugated pipe pull wire, an air bag air injection port, an air bag air injection pipe and a wireless micro camera; the catheter has the functions of sputum suction, balloon pressure monitoring, gas monitoring, visual intubation and the like; the utility model discloses a pipe has set up respiratory channel, has inhaled phlegm passageway and gaseous monitoring passageway, can carry out gaseous monitoring and inhale the phlegm to the patient when nasopharynx pipe of ventilating plays the effect of ventilating, and does not influence each other and interfere, can effectively save medical personnel operating time and rescue steps to can maintain the patient nasopharynx way unobstructed, reduce the injury that causes the patient, and satisfy and keep somewhere trachea cannula patient air flue nursing needs to reduce the emergence of complication simultaneously for a long time. Therefore, the utility model discloses convenient to use, easy operation, security are high, multi-functional, have more the practicality.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially relate to a multi-functional nasopharynx pipe of ventilating.
Background
As a commonly used rescue means in emergency treatment, the tracheal intubation is one of the most widely applied, most effective and most rapid means in respiratory tract management, and is the basic skill which must be mastered by medical staff. The literature reports that the incidence of difficult intubation is between 1.5% and 13%, and difficult intubation is more likely to occur in sub-optimal environments outside of the operating room, such as emergency rooms, Intensive Care Units (ICUs), patient rooms, and even outside hospitals. Nasal conscious intubation is the most effective method for treating difficult airways.
In the process of trachea intubation, due to the structural characteristics and design defects of a trachea intubation catheter, complications such as laryngeal edema, glottic injury, oral injury, respiratory tract injury, local bleeding and the like can be caused, and the adoption of visual trachea intubation is a good choice in order to reduce the occurrence probability of the complications.
After the tracheal cannula is used for anaesthetizing a patient before an operation, in clinical use, sputum is possibly adhered to the wall of an tracheostomy airway for a long time and is excessively accumulated to form sputum scab due to multiple reasons of insufficient dampness in the cannula, improper sputum suction method, patient expectoration weakness, insufficient body fluid and thick sputum. The current clinical approach to this situation is: 0.5ml of normal saline is dripped into the opening of the tracheal cannula, and then the secretion in the airway and the cannula is sucked out from the near to the far along the tracheal cannula by a sputum suction tube. Because the inner diameter of the tracheal cannula is circular, and the length of the tracheal cannula reaches 250mm and a certain radian, the dropped physiological saline flows from a high position to a low position; meanwhile, the secretion stuck on the tracheal wall cannot be sucked at will, and effective cleaning cannot be achieved.
At present, the nasal endotracheal intubation clinically is conducted through a visual laryngoscope or a fiber bronchoscope for guiding intubation, the operation is complex, the cost is high, and the nasal endotracheal intubation is difficult to popularize in a plurality of primary hospitals. Moreover, the function of the existing endotracheal tube is not complete enough, medical staff may need to use different instruments to perform operations step by step to perform sputum aspiration, gas monitoring and the like when performing intubation-related operations, the steps are complicated, and infection may be generated or the incidence rate of other complications may be increased in the process.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model provides a multifunctional nasopharyngeal airway tube, which not only needs to reduce the occurrence of complications simultaneously for satisfying the airway nursing of patients with long-term retention trachea intubation, but also avoids unpredictable serious complications brought by secondary intubation.
To achieve the purpose, the utility model adopts the following technical proposal:
a multifunctional nasopharynx air conduit comprises an air conduit, an air bag, a sputum suction tube negative pressure joint, a gas monitoring tube, a corrugated tube pull wire, an air bag gas injection port, an air bag gas injection tube and a wireless micro camera; the air bag is arranged at the lower half section of the vent pipe; the sputum suction pipe negative pressure joint, the gas monitoring pipe, the corrugated pipe pull wire and the air bag gas injection port are all arranged on the upper half section of the vent pipe; the air bag gas injection pipe is arranged on the inner wall of the vent pipe; the wireless micro camera can extend into the ventilation pipe.
Further, the breather pipe divides into first section, second section and third section from the bottom up in proper order.
Further, gasbag gas injection pipe one end through gasbag gas injection mouth with the gasbag is linked together, and the other end is connected the gasbag inflation assembly who is in on the gasbag gas injection pipe is connected, the gasbag encircles and sets up on the breather pipe body outer wall, the breather pipe body with gasbag junction top is inwards sunken to be formed with annular phlegm accumulation groove.
Further, be equipped with a plurality of first phlegm mouths of inhaling on the first district section, first phlegm mouth of inhaling is equidistant to be located around the cyclic annular amasss phlegm groove, the fixed first ring straw that is provided with of breather pipe body inside wall, the lateral wall of first ring straw with first phlegm mouth of inhaling is linked together, the lateral wall of first ring straw still communicates with the bottom of the phlegm pipe of inhaling of a vertical setting, inhale the phlegm pipe set up in inside the breather pipe body, its top upwards wear out the body with inhale phlegm pipe negative pressure and connect and link to each other.
Further, the second section is provided with a corrugated pipe, the bottom of the corrugated pipe is fixedly connected with the top of the snorkel body of the first section, and the top of the corrugated pipe is fixedly connected with the bottom of the snorkel body of the third section.
Furthermore, the bellows with vertically be provided with two logical stay wires pipe in the pipe wall of breather pipe, two be provided with the bellows stay wire in leading to the stay wire pipe way, the one end setting that the bellows was acted as go-between is in on the front end pipe wall of bellows, the other end passes through lead to the opening of stay wire pipe way front end and draw forth the bellows stay wire other end fixed be provided with a lantern ring.
Further, be equipped with the screw thread arch on the third section, set up the second on the screw thread arch and inhale the phlegm mouth, fixedly connected with second ring straw on the breather pipe body inside wall, the second ring straw with the phlegm mouth is inhaled to the second and is linked together, the second ring straw with inhale the phlegm pipe and be linked together.
Further, the air injection port of the air bag can be connected with an external automatic air bag pressure monitoring device.
Furthermore, the tail end of the gas monitoring pipe is provided with a luer connector which can be connected with a gas monitor.
Furthermore, the surface of the upper half section of the vent pipe is provided with scales.
The utility model has the advantages that:
the utility model has the advantages of providing a multi-functional nasopharynx air duct, will inhale phlegm function, sacculus pressure monitoring, gas monitoring and visual intubate are multi-functional to be integrated into one body, set up respiratory channel, inhale phlegm passageway and gas monitoring passageway, can carry out gas monitoring and inhale phlegm to the patient when nasopharynx air duct plays the effect of ventilating, and do not influence the interference each other, can effectively save medical personnel operating time and rescue steps, and can maintain the patient's nasopharynx way unobstructed, reduce the injury that causes the patient, and satisfy the long-term trachea cannula patient air flue nursing need reduce the emergence of complication simultaneously; the multifunctional nasopharyngeal airway of the utility model can be used singly or matched with an airway auxiliary device; the ventilation, sputum suction and gas monitoring are integrated, the function is strong, the operation is simple, and the cost is low. Has multiple functions in clinic and is worth popularizing and using in clinic.
Drawings
FIG. 1 is a schematic view of a multi-functional nasopharyngeal airway in accordance with the present invention;
FIG. 2 is a schematic horizontal cross-sectional view of the thread structure of the present invention;
FIG. 3 is a schematic horizontal cross-sectional view of the annular liquid accumulation groove structure of the present invention;
FIG. 4 is an enlarged structural diagram of the third section of the present invention;
FIG. 5 is an enlarged structural diagram of the first section of the present invention;
fig. 6 is a schematic horizontal cross-section of the vent tube of the present invention.
In the figure: 1. a breather pipe; 2. a first section; 21. a lower nozzle of the vent pipe; 22. an air bag; 23. a first sputum suction port; 24. a sputum suction tube; 25. an air bag gas injection pipe; 26. a first circular suction pipe; 3. a second section; 31. a bellows; 4. a third section; 41. a second sputum suction port; 42. a threaded boss; 43. a second circular suction pipe; 5. a negative pressure joint of the sputum suction tube; 6. a gas monitoring tube; 7. a bellows pull wire; 8. an air bag air injection port; 9. an upper nozzle of the vent pipe; 10. a wire pulling pipe is communicated;
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Referring to fig. 1-6, the utility model provides a multifunctional nasopharynx air duct, which comprises an air duct 1, an air bag 22, a sputum suction tube negative pressure joint 5, a gas monitoring tube 6, a bellows pull wire 77, an air bag gas injection port 8, an air bag gas injection tube 25 and a wireless micro camera; the air bag 22 is arranged at the lower half section of the breather pipe 1; the sputum aspirator negative pressure joint 5, the gas monitoring tube 6, the bellows pull wire 7 and the air bag gas injection port 8 are all arranged on the upper half section of the vent pipe 1; the air bag gas injection pipe 25 is arranged on the inner wall of the vent pipe 1; the wireless micro camera can extend into the breather pipe 1. The breather pipe 1 is divided into a first section 2, a second section 3 and a third section 4 from bottom to top in sequence. The lower part of the air pipe 1 is divided into 3 sections which can play roles in sucking phlegm and controlling direction; the air bag 22 forms an annular sputum collecting groove for absorbing sputum; realizing visual trachea cannula; the interior hollow gas monitors the passage. The air bag gas injection port 8 of the air bag 22 can be communicated with another external air bag with a sensor to be inflated and deflated to change the size of the air bag, so that the air bag is in proper fit with the mucous membrane of the inner wall of the trachea of a human body.
Gasbag gas injection pipe 25 one end is linked together with gasbag 22 through gasbag gas injection mouth 8, and the other end is connected with the gasbag gas charging component who connects on gasbag gas injection pipe 25, and gasbag 22 encircles and sets up on 1 body outer wall of breather pipe, and 1 body of breather pipe is inwards sunken to be formed with annular phlegm accumulation groove above the gasbag 22 junction. The air bag 22 is sleeved outside the vent pipe 1 and is bonded on the pipe body through hot pressing (a common bonding technology), the air bag gas injection pipe 25 runs in the pipe wall of the vent pipe 1, one end of the air bag gas injection pipe 25 is connected with the air bag 22, and the other end of the air bag gas injection pipe is connected with the air bag gas injection port 8. The air injection port 8 of the air bag can be connected with an external automatic air bag pressure monitoring device. Such structure on the one hand can automatically regulated gasbag in the air flue to the pressure of air flue mucous membrane, prevents that too big tissue ischemia or stress reaction that causes of pressure, and on the other hand can avoid cross infection because this endotracheal tube is disposable medical supplies, and the design of outside gasbag makes sensor can used repeatedly, has effectively practiced thrift the cost.
Be equipped with a plurality of first phlegm mouths 23 of inhaling on first district section 2, first phlegm mouth 23 of inhaling is equally spaced apart to be located around the cyclic annular long-pending phlegm groove, 1 body inside wall of breather pipe is fixed and is provided with first ring straw 26, the lateral wall and the first phlegm mouth 23 of inhaling of first ring straw 26 are linked together, the lateral wall of first ring straw 26 still communicates with the bottom of the phlegm pipe 24 of inhaling of a vertical setting, it sets up inside 1 body of breather pipe to inhale phlegm pipe 24, its top upwards wears out the body and inhales phlegm pipe negative pressure and connect 5 and link to each other.
The second section 3 is provided with a corrugated pipe 31, the bottom of the corrugated pipe 31 is fixedly connected with the top of the body of the vent pipe 1 of the first section 2, and the top of the corrugated pipe 31 is fixedly connected with the bottom of the body of the vent pipe 1 of the third section 4. Two through stay wires 10 are longitudinally arranged in the pipe walls of the corrugated pipe 31 and the vent pipe 1, corrugated pipe stay wires 7 are arranged in the two through stay wire pipes 10, one end of each corrugated pipe stay wire 7 is arranged on the pipe wall of the front end of the corrugated pipe 31, the other end of each corrugated pipe stay wire 7 is led out through an opening in the front end of the through stay wire pipe 10, and a lantern ring is fixedly arranged at the other end of each corrugated pipe stay wire 7.
The third section 4 is provided with a threaded protrusion 42, the threaded protrusion 42 is provided with a second sputum suction port 41, the inner side wall of the body of the snorkel 1 is fixedly connected with a second circular suction pipe 43, the second circular suction pipe 43 is communicated with the second sputum suction port 41, and the second circular suction pipe 43 is communicated with the sputum suction pipe 24. The air injection port 8 of the air bag can be connected with an external automatic air bag pressure monitoring device. The tail end of the gas monitoring pipe 6 is provided with a luer connector which can be connected with a gas monitor. The opening of the gas pipe is almost flush with the vent pipe, and the tail end of the gas pipe is connected with a luer connector which can be connected with a gas monitor. The surface of the upper half section of the breather pipe 1 is provided with scales.
Example one
Take a patient who needs to keep the trachea cannula for a long time to perform the nasal trachea cannula as an example. Firstly, the wireless micro camera is connected with a long and thin steel cable and placed in a tracheal cannula, after nasopharynx mucous membrane surface anesthesia is carried out on the patient, nasal visual ventilation tube 1 intubation is implemented, a lower tube opening 21 of the ventilation tube is inserted, a corrugated tube pull wire 7 is pulled through lifting, the bending degree of a corrugated tube 31 at the front end of the ventilation tube 1 is adjusted to adapt to the nasal cavity and airway anatomical structure characteristics of the patient, the front end of the ventilation tube 1 is smoothly reached to the upper part of a glottis, the micro camera is taken out through the steel cable, then an air bag 22 is inflated, and the intubation is fixed. If the nasal cavity of the patient is blocked by foreign matters or abnormally breathes, the sputum suction tube negative pressure joint 5 at the tail end of the sputum suction tube 24 can be connected for sputum suction. After successful intubation, the air bag gas injection port 8 is connected with an external sensor air bag pressure detection device, the pressure of the air bag 22 is adjusted to be appropriate, gas is injected, and a guide pipe is fixed. Connect the breathing machine through 9 interface connections of mouth of pipe on the breather pipe, gas monitoring pipe 6 connects the gas monitoring appearance, adopts other functions according to patient particular case. If the abnormal breathing of the patient is observed or the foreign body blockage in the air passage is detected on the gas monitor, the sputum suction pipe negative pressure joint 5 connected with the tail end of the sputum suction pipe 24 is used for sucking the sputum.
This embodiment is formed with annular phlegm accumulation groove through outwards protruding gasbag 22, the first phlegm hole 23 of inhaling that the phlegm accumulation groove bottom was seted up, the secretion by body outer wall landing can be held in the phlegm accumulation groove, use the syringe when inhaling phlegm pipe negative pressure connector 5 department and bleed, it forms the negative pressure to inhale in the phlegm pipe 24, with the secretion from the first phlegm hole of inhaling that the phlegm accumulation groove bottom set up aspirate to first ring straw 26 in, finally take out to the syringe in, need bleed to the gasbag when taking out trachea cannula at last, remaining sputum is the random accumulation and is taken out and take out trachea portion along with trachea cannula in the phlegm accumulation groove this moment, can not splash and spill to trachea portion and cause the infection.
The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the protection scope of the present invention, which is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A multi-functional nasopharyngeal airway tube, which is characterized in that: comprises a breather pipe, an air bag, a sputum suction pipe negative pressure joint, a gas monitoring pipe, a corrugated pipe pull wire, an air bag gas injection port, an air bag gas injection pipe and a wireless micro camera; the air bag is arranged at the lower half section of the vent pipe; the sputum suction pipe negative pressure joint, the gas monitoring pipe, the corrugated pipe pull wire and the air bag gas injection port are all arranged on the upper half section of the vent pipe; the air bag gas injection pipe is arranged on the inner wall of the vent pipe; the wireless micro camera can extend into the ventilation pipe.
2. A multi-functional nasopharyngeal airway tube according to claim 1, wherein:
the breather pipe divides into first district section, second district section and third district section from the bottom up in proper order.
3. A multi-functional nasopharyngeal airway tube according to claim 2, wherein:
one end of the air bag gas injection pipe is communicated with the air bag through the air bag gas injection port, the other end of the air bag gas injection pipe is connected with an air bag gas inflation assembly on the air bag gas injection pipe, the air bag is arranged on the outer wall of the air pipe body in a surrounding mode, and the upper portion of the air pipe body and the upper portion of the air bag joint are inwards sunken to form an annular sputum accumulation groove.
4. A multi-functional nasopharyngeal airway tube according to claim 3, wherein:
be equipped with a plurality of first phlegm mouths of inhaling on the first district section, first phlegm mouth of inhaling is equidistant to be located around the cyclic annular phlegm accumulation groove, the fixed first ring straw that is provided with of breather pipe body inside wall, the lateral wall of first ring straw with first phlegm mouth of inhaling is linked together, the lateral wall of first ring straw still communicates with the bottom of the phlegm pipe of inhaling of a vertical setting, inhale the phlegm pipe set up in inside the breather pipe body, its top upwards wear out the body with inhale phlegm pipe negative pressure and connect and link to each other.
5. A multi-functional nasopharyngeal airway tube according to claim 2, wherein:
the second section is provided with a corrugated pipe, the bottom of the corrugated pipe is fixedly connected with the top of the breather pipe body of the first section, and the top of the corrugated pipe is fixedly connected with the bottom of the breather pipe body of the third section.
6. The multifunctional nasopharyngeal airway tube of claim 5, wherein:
the bellows with vertically be provided with two logical stay wires pipe in the pipe wall of breather pipe, two be provided with the bellows stay wire in leading to the stay wire pipe way, the one end setting that the bellows acted as go-between is in on the front end pipe wall of bellows, the other end passes through the opening of leading to the stay wire pipe way front end is drawn forth the bellows stay wire other end fixed be provided with a lantern ring.
7. The multifunctional nasopharyngeal airway tube of claim 5, wherein:
the third section is provided with a threaded protrusion, the threaded protrusion is provided with a second sputum suction port, the inner side wall of the breather pipe body is fixedly connected with a second circular suction pipe, the second circular suction pipe is communicated with the second sputum suction port, and the second circular suction pipe is communicated with the sputum suction pipe.
8. A multi-functional nasopharyngeal airway tube according to claim 1, wherein:
the air injection port of the air bag can be connected with an external automatic air bag pressure monitoring device.
9. A multi-functional nasopharyngeal airway tube according to claim 1, wherein:
the tail end of the gas monitoring pipe is provided with a luer connector which can be connected with a gas monitor.
10. A multi-functional nasopharyngeal airway tube according to claim 1, wherein:
the surface of the upper half section of the breather pipe is provided with scales.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122976812.8U CN217119073U (en) | 2021-11-30 | 2021-11-30 | Multifunctional nasopharynx air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122976812.8U CN217119073U (en) | 2021-11-30 | 2021-11-30 | Multifunctional nasopharynx air duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217119073U true CN217119073U (en) | 2022-08-05 |
Family
ID=82618232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122976812.8U Expired - Fee Related CN217119073U (en) | 2021-11-30 | 2021-11-30 | Multifunctional nasopharynx air duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217119073U (en) |
-
2021
- 2021-11-30 CN CN202122976812.8U patent/CN217119073U/en not_active Expired - Fee Related
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