CN219721519U - Central venous pump pipe with protective structure - Google Patents
Central venous pump pipe with protective structure Download PDFInfo
- Publication number
- CN219721519U CN219721519U CN202320680261.7U CN202320680261U CN219721519U CN 219721519 U CN219721519 U CN 219721519U CN 202320680261 U CN202320680261 U CN 202320680261U CN 219721519 U CN219721519 U CN 219721519U
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- pipe
- tube
- main body
- pump
- section
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- 230000001681 protective effect Effects 0.000 title claims abstract description 36
- 239000003814 drug Substances 0.000 claims abstract description 62
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 22
- 230000007704 transition Effects 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 229940079593 drug Drugs 0.000 abstract description 19
- 238000005086 pumping Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 230000006872 improvement Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 230000003444 anaesthetic effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- JWZZKOKVBUJMES-UHFFFAOYSA-N (+-)-Isoprenaline Chemical compound CC(C)NCC(O)C1=CC=C(O)C(O)=C1 JWZZKOKVBUJMES-UHFFFAOYSA-N 0.000 description 1
- UCTWMZQNUQWSLP-VIFPVBQESA-N (R)-adrenaline Chemical compound CNC[C@H](O)C1=CC=C(O)C(O)=C1 UCTWMZQNUQWSLP-VIFPVBQESA-N 0.000 description 1
- 229930182837 (R)-adrenaline Natural products 0.000 description 1
- 208000009304 Acute Kidney Injury Diseases 0.000 description 1
- JRWZLRBJNMZMFE-UHFFFAOYSA-N Dobutamine Chemical compound C=1C=C(O)C(O)=CC=1CCNC(C)CCC1=CC=C(O)C=C1 JRWZLRBJNMZMFE-UHFFFAOYSA-N 0.000 description 1
- 208000032843 Hemorrhage Diseases 0.000 description 1
- NNJVILVZKWQKPM-UHFFFAOYSA-N Lidocaine Chemical compound CCN(CC)CC(=O)NC1=C(C)C=CC=C1C NNJVILVZKWQKPM-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- ZBBHBTPTTSWHBA-UHFFFAOYSA-N Nicardipine Chemical compound COC(=O)C1=C(C)NC(C)=C(C(=O)OCCN(C)CC=2C=CC=CC=2)C1C1=CC=CC([N+]([O-])=O)=C1 ZBBHBTPTTSWHBA-UHFFFAOYSA-N 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- SNIOPGDIGTZGOP-UHFFFAOYSA-N Nitroglycerin Chemical compound [O-][N+](=O)OCC(O[N+]([O-])=O)CO[N+]([O-])=O SNIOPGDIGTZGOP-UHFFFAOYSA-N 0.000 description 1
- 208000001647 Renal Insufficiency Diseases 0.000 description 1
- 208000033626 Renal failure acute Diseases 0.000 description 1
- 201000011040 acute kidney failure Diseases 0.000 description 1
- -1 and idalong Chemical compound 0.000 description 1
- 239000003416 antiarrhythmic agent Substances 0.000 description 1
- 239000002220 antihypertensive agent Substances 0.000 description 1
- 229940127088 antihypertensive drug Drugs 0.000 description 1
- YEESUBCSWGVPCE-UHFFFAOYSA-N azanylidyneoxidanium iron(2+) pentacyanide Chemical compound [Fe++].[C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.N#[O+] YEESUBCSWGVPCE-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000034158 bleeding Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 239000000496 cardiotonic agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229960004166 diltiazem Drugs 0.000 description 1
- HSUGRBWQSSZJOP-RTWAWAEBSA-N diltiazem Chemical compound C1=CC(OC)=CC=C1[C@H]1[C@@H](OC(C)=O)C(=O)N(CCN(C)C)C2=CC=CC=C2S1 HSUGRBWQSSZJOP-RTWAWAEBSA-N 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- XEYBHCRIKKKOSS-UHFFFAOYSA-N disodium;azanylidyneoxidanium;iron(2+);pentacyanide Chemical compound [Na+].[Na+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].[O+]#N XEYBHCRIKKKOSS-UHFFFAOYSA-N 0.000 description 1
- 229960001089 dobutamine Drugs 0.000 description 1
- 230000001544 dysphoric effect Effects 0.000 description 1
- 229960005139 epinephrine Drugs 0.000 description 1
- 238000001631 haemodialysis Methods 0.000 description 1
- 230000000322 hemodialysis Effects 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 238000010253 intravenous injection Methods 0.000 description 1
- 229960001317 isoprenaline Drugs 0.000 description 1
- 201000006370 kidney failure Diseases 0.000 description 1
- 229960004194 lidocaine Drugs 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- PZRHRDRVRGEVNW-UHFFFAOYSA-N milrinone Chemical compound N1C(=O)C(C#N)=CC(C=2C=CN=CC=2)=C1C PZRHRDRVRGEVNW-UHFFFAOYSA-N 0.000 description 1
- 229960003574 milrinone Drugs 0.000 description 1
- 229960001783 nicardipine Drugs 0.000 description 1
- 229960002460 nitroprusside Drugs 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229940083618 sodium nitroprusside Drugs 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Abstract
The utility model relates to a central venous pump pipe with a protective structure, which comprises a main body pipeline assembly and a pump pipe assembly connected to the main body pipeline assembly, wherein the main body pipeline assembly comprises a main body pipe and a medicine guide pipe connected to one end of the main body pipe, the pump pipe assembly comprises a plurality of pump pipes connected to the main body pipe in parallel, a protective sleeve for protecting the medicine guide pipe is arranged on the main body pipe, and a reinforcing sleeve is arranged on each pump pipe. The central venous pump tube with the protective structure prevents the drug guide tube from being folded by arranging the protective sleeve on the drug guide tube at one end of the main body tube, and prevents the pump tubes from crossing by arranging the reinforcing sleeve on each pump tube, thereby improving the drug pumping effect on patients.
Description
Technical Field
The utility model relates to a medical apparatus, in particular to a central venous pump tube with a protective structure.
Background
Central venous pump lines are commonly used for patients with acute kidney injury, renal failure, hemodialysis, blood purification treatment, etc. to pump drugs to patients through central venous pump lines, and there are a variety of drugs that patients need to pump, such as cardiotonic drugs: epinephrine (E), dobutamine, milrinone, antiarrhythmic drugs: isoprenaline, lidocaine, and idalong, nitrate-based drugs: aibei, nitroglycerin (NG), antihypertensive drug: sodium Nitroprusside (NP), diltiazem, nicardipine, and the like.
The current medicine guide tube in the central venous pump tube is thinner, the medicine guide tube is easy to fold in the use process, and when a plurality of medicines are pumped into a patient, the pump tubes which need to be matched are more, and the pump tubes are easy to cross, for example, a disposable venous double-cavity indwelling needle device with a publication number of CN215608324U comprises an indwelling needle body, a connecting tube and a shunt hose; and the other end of the connecting pipe is fixedly connected with two cavity-dividing syringes through a split hose. According to the disposable venous double-cavity indwelling needle device, by arranging the cavity-separating injector, the way of intravenous pump medicine can be met under the condition of unstable blood flow dynamics caused by disease change is avoided, pain brought by additionally establishing a venous access and economic burden of a patient can be reduced, and the situation that the dosage of anesthetic is required to be increased due to insufficient anesthetic exists easily in the anesthetic application process of a surgical patient, so that the requirement of temporary intravenous injection medicine can be met by the double-cavity indwelling needle, the bleeding incidence rate of puncture points can be reduced for dysphoric patients, and the safety of the patient can be better ensured for the central venous access with higher risk. However, the medicine guide tube is easy to fold in the use process, and the pump tube is easy to cross, so that the effect of pumping medicine to a patient is affected.
Disclosure of Invention
The utility model provides a central venous pump tube with a protective structure, which can prevent a medicine guide tube from being folded and improve the medicine pumping effect on a patient.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a central venous pump line with protective structure, includes main part pipeline subassembly and connects the pump line subassembly on main part pipeline subassembly, main part pipeline subassembly includes main part pipe, connects the pipe that leads in main part pipe one end, the pump line subassembly is including connecting a plurality of pump pipes on the main part pipe side by side, be provided with the lag that is used for protecting the pipe that leads on the main part pipe, every be provided with on the pump pipe and consolidate the cover.
As a further improvement, the protective sleeve is of a flexible sleeve-shaped structure and is arranged at one end of the main body tube with the medicine guide tube.
As a further improvement, the protective sheath includes a mounting section, a connection section integrally formed on the mounting section, and a protective section integrally formed on the connection section, the mounting section being provided at one end of the main body tube having the drug guide tube.
As a further improvement, the protection section is outwards involute along the end part of the connecting section to form a horn-shaped structure, the outer end part of the protection section is outwards in an arc-shaped curled structure, and the end part of the arc-shaped curled structure forms a transition section.
As a further improvement, each pump pipe comprises a connecting pipe, a filter pipe formed at one end of the connecting pipe, a medicine feeding pipe connected to the filter pipe and a control valve arranged on the connecting pipe, wherein the connecting pipe is arranged on the main body pipe and communicated with the main body pipe, and the connecting end of the filter pipe and the medicine feeding pipe is provided with the reinforcing sleeve.
As a further improvement, the reinforcing sleeve comprises a mounting pipe and a telescopic pipe movably connected to the mounting pipe, and the mounting pipe is arranged at the connecting end of the filtering pipe and the medicine inlet pipe in the pump pipe.
As a further improvement, a plurality of elastic holding projections are formed at the inner peripheral wall of the mounting section so that the mounting section is held at the end of the main body tube.
As a further improvement, the reinforcing sleeve further comprises a transition pipe which is of a flexible structure and integrally formed at the end part of the telescopic pipe, and the transition pipe is connected along the end part of the telescopic pipe in an outwards arc-shaped surface structure.
As a further improvement, the clamping surface of each elastic clamping protrusion is in transition of an arc surface, and the radian of the arc surface is equivalent to that of the pipe body at the end part of the main pipe.
As a further improvement, the end part of the installation tube is provided with a clamping section, the tube diameter of the telescopic tube is smaller than that of the installation tube, one end of the telescopic tube is provided with a buckle, the telescopic tube is slidably arranged in the installation tube, and the buckle at one end of the telescopic tube is clamped by the clamping section at the end part of the installation tube, so that the length of the reinforcing sleeve is adjustable.
The technical scheme of the utility model has the following beneficial effects: the central venous pump tube with the protective structure prevents the drug guide tube from being folded by arranging the protective sleeve on the drug guide tube at one end of the main body tube, and prevents the pump tubes from crossing by arranging the reinforcing sleeve on each pump tube, thereby improving the drug pumping effect on patients.
Drawings
FIG. 1 is a schematic view of the overall structure of a central venous pump tube with a protective structure according to the present utility model;
FIG. 2 is an enlarged view of the protective sheath 103 in the central venous pump tube with the protective structure of the present utility model;
FIG. 3 is a schematic cross-sectional view of the protective cover 103 shown in FIG. 2;
fig. 4 is an enlarged view schematically showing a reinforcing sleeve 201 in a central venous pump tube with a protective structure according to the present utility model;
fig. 5 is a schematic cross-sectional view of the reinforcing sleeve 201 of fig. 4.
Detailed Description
The following examples further illustrate the utility model but are not to be construed as limiting the utility model. Modifications and substitutions to methods, procedures, or conditions of the present utility model without departing from the spirit and nature of the utility model are intended to be within the scope of the present utility model.
Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1, a central venous pump tube with a protection structure according to the present disclosure includes a main body tube assembly 100 and a pump tube assembly 200 connected to the main body tube assembly 100.
The body tube assembly 100 includes a body tube 101, a drug guide tube 102 connected to one end of the body tube 101, and a protective sheath 103 provided on the body tube 101. Specifically, the protecting sleeve 103 is in a flexible sleeve-shaped structure and is arranged at one end of the main body tube 101 with the medicine guiding tube 102 so as to protect the medicine guiding tube 102, prevent the medicine guiding tube 102 from being folded, and improve the medicine pumping effect on a patient.
In this embodiment, the protective sheath 103 is made of a medical grade polycarbonate material, and referring to fig. 2 to 3, the protective sheath 103 includes a mounting section 104, a connecting section 105 integrally formed on the mounting section 104, and a protective section 106 integrally formed on the connecting section 105.
Referring to fig. 1, a mounting section 104 is disposed at one end of a main body tube 101 having a drug guiding tube 102, a plurality of elastic clamping protrusions 1041 are formed at an inner peripheral wall of the mounting section 104, such that the mounting section 104 is clamped at an end of the main body tube 101, the plurality of elastic clamping protrusions 1041 are formed at the inner peripheral wall of the mounting section 104 in a circular array with an axis of the mounting section 104 as a center line, a clamping surface of each elastic clamping protrusion 1041 is in transition with an arc surface, and an arc of the arc surface is equivalent to an arc surface of a tube body at an end of the main body tube 101.
The protecting section 106 is outwardly flared along the end of the connecting section 105 to form a horn-shaped structure to protect the drug guide tube 102, prevent the drug guide tube 102 from being folded, and improve the drug pumping effect on the patient. In this embodiment, referring to fig. 3 specifically, the outer end of the protection section 106 is outwardly in an arc-shaped curled structure, and the end of the arc-shaped curled structure forms a transition section 1061.
Referring to fig. 1, 4 and 5, the pump tube assembly 200 is connected to the main tube 101 of the main tube assembly 100 and is mutually communicated with the main tube 101, the pump tube assembly 200 includes a plurality of pump tubes connected to the main tube 101 in parallel and a reinforcing sleeve 201 disposed on each pump tube, and in this embodiment, the plurality of pump tubes includes a first pump tube 202, a second pump tube 203, a third pump tube 204 and a fourth pump tube 205, and the number of pump tubes can be adjusted according to the actual condition of the patient.
Referring to fig. 1, a first pump tube 202 is connected to the main body tube 101, and the first pump tube 202 includes a connection tube 2021, a filter tube 2022 formed at one end of the connection tube 2021, a medicine feeding tube 2023 connected to the filter tube 2022, and a control valve 2024 mounted to the connection tube 2021. The connecting pipe 2021 is connected to the main body pipe 101 and is communicated with the main body pipe 101, and the connecting end of the filter pipe 2022 and the medicine feeding pipe 2023 is provided with a reinforcing sleeve 201 so as to prevent the medicine feeding pipes in a plurality of pump pipes from crossing and improve the medicine pumping effect on a patient.
The reinforcing sleeve 201 is a transparent tube structure, the reinforcing sleeve 201 is disposed at a connection end of the filter tube 2022 and the medicine inlet tube 2023 in the pump tube, as shown in fig. 4 and 5, the reinforcing sleeve 201 includes a mounting tube 2011, a telescopic tube 2012 movably connected to the mounting tube 2011, and a transition tube 2013 formed at an end of the telescopic tube 2012. The installation pipe 2011 is arranged at the connecting end of the filter pipe 2022 and the medicine inlet pipe 2023 in the pump pipe, a clamping section 2014 is formed at the end part of the installation pipe 2011, the pipe diameter of the telescopic pipe 2012 is smaller than that of the installation pipe 2011, a buckle 2015 is formed at one end of the telescopic pipe 2012, and a transition pipe 2013 is formed at the other end of the telescopic pipe 2012.
Referring to fig. 5, the telescopic tube 2012 is slidably disposed in the mounting tube 2011, and the buckle 2015 at one end of the telescopic tube 2012 is clamped by the clamping section 2014 at the end of the mounting tube 2011, so that the reinforcement sleeve 201 can adjust the length to accommodate the feeding tubes 2023 with different lengths. The transition tube 2013 is flexible and integrally formed at the end of the extension tube 2012, and in this embodiment, the transition tube 2013 is connected along the end of the extension tube 2012 in an outward arc surface structure to prevent the feeding tube 2023 from being folded.
The second pump pipe 203, the third pump pipe 204 and the fourth pump pipe 205 are all identical to the first pump pipe 202 in structure, and the specific structure is referred to as the structure of the first pump pipe 202, so that the description thereof is omitted herein.
When in use, according to the symptoms of a patient and the actual situation of the need of pumping medicine, the number of pump pipes is adjusted, so that a plurality of pump pipes are connected on the main pipe 101 in parallel, medicine liquid is placed into the medicine inlet pipe corresponding to the pump pipes, then the mounting pipe 2011 of the reinforcing sleeve 201 is arranged on the connecting end of the filter pipe 2022 and the medicine inlet pipe 2023 in the pump pipes, the length of the reinforcing sleeve 201 is adjusted according to the length of each medicine inlet pipe, and in particular, the telescopic pipe 2012 is slid along the clamping section 2014 at the end part of the mounting pipe 2011, so that the reinforcing sleeve 201 covers the medicine inlet pipes, and the transition pipe 2013 on the reinforcing sleeve 201 is arranged at the end part of the medicine inlet pipe so as to prevent the medicine inlet pipes in the plurality of pump pipes from crossing. The mounting section 104 of the protective sleeve 103 in the main body pipeline assembly 100 is arranged at one end of the main body pipe 101 with the medicine guide pipe 102, the protective section 106 is used for protecting the medicine guide pipe 102 to prevent the medicine guide pipe 102 from being folded, and finally, the contact pin of the medicine guide pipe 102 is inserted into a patient body to pump medicine to the patient.
In summary, the central venous pump tube with the protection structure of the present utility model prevents the drug guide tube 102 from being folded by providing the protection sleeve 103 on the drug guide tube 102 at one end of the main body tube 101, and prevents the pump tubes from crossing by providing the reinforcement sleeve 201 on each pump tube, thereby improving the drug pumping effect on the patient.
The above examples are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (10)
1. The utility model provides a central venous pump line with protective structure, includes main body pipeline subassembly (100) and connects pump line subassembly (200) on main body pipeline subassembly (100), main body pipeline subassembly (100) include main body pipe (101), connect in pipe guide (102) of main body pipe (101) one end, pump line subassembly (200) are including a plurality of pump lines of being connected in parallel on main body pipe (101), its characterized in that: the main body tube (101) is provided with a protective sleeve (103) for protecting the medicine guide tube (102), and each pump tube is provided with a reinforcing sleeve (201).
2. The central venous pump tube with the protective structure according to claim 1, wherein: the protective sleeve (103) is of a flexible sleeve-shaped structure and is arranged at one end of the main body tube (101) with the medicine guide tube (102).
3. The central venous pump tube with the protective structure according to claim 2, wherein: the protective sleeve (103) comprises a mounting section (104), a connecting section (105) integrally formed on the mounting section (104) and a protective section (106) integrally formed on the connecting section (105), wherein the mounting section (104) is arranged at one end of a main body tube (101) with a medicine guide tube (102).
4. A central venous pump tube with a protective structure as claimed in claim 3, characterized in that: the protection section (106) is outwards involute along the end part of the connecting section (105) to form a horn-shaped structure, the outer end part of the protection section (106) is outwards in an arc-shaped curled structure, and the end part of the arc-shaped curled structure forms a transition section (1061).
5. The central venous pump tube with the protective structure according to claim 1, wherein: each pump pipe comprises a connecting pipe (2021), a filter pipe (2022) formed at one end of the connecting pipe (2021), a medicine feeding pipe (2023) connected to the filter pipe (2022) and a control valve (2024) arranged on the connecting pipe (2021), wherein the connecting pipe (2021) is arranged on the main body pipe (101) and is communicated with the main body pipe (101), and the connecting end of the filter pipe (2022) and the medicine feeding pipe (2023) is provided with the reinforcing sleeve (201).
6. The central venous pump tube with the protective structure according to claim 5, wherein: the reinforcing sleeve (201) comprises a mounting pipe (2011) and a telescopic pipe (2012) movably connected to the mounting pipe (2011), and the mounting pipe (2011) is arranged at the connecting end of the filtering pipe (2022) and the medicine feeding pipe (2023) in the pump pipe.
7. A central venous pump tube as claimed in claim 3, characterised in that: a plurality of elastic clamping protrusions are formed at the inner peripheral wall of the mounting section (104) so that the mounting section (104) is clamped at the end of the main body tube (101).
8. The central venous pump tube with the protective structure of claim 6, wherein: the reinforcing sleeve (201) further comprises a transition pipe (2013), the transition pipe (2013) is of a flexible structure and integrally formed at the end part of the telescopic pipe (2012), and the transition pipe (2013) is connected along the end part of the telescopic pipe (2012) in an outwards arc-shaped surface structure.
9. The central venous pump tube of claim 7, wherein: the clamping surface of each elastic clamping bulge is in arc surface transition, and the radian of the arc surface is equivalent to the cambered surface of the pipe body at the end part of the main pipe (101).
10. The central venous pump tube of claim 6, wherein: the end of installation pipe (2011) is formed with and blocks section (2014), and the pipe diameter of flexible pipe (2012) is less than the pipe diameter of installation pipe (2011), and flexible pipe (2012) one end is formed with buckle (2015), and flexible pipe (2012) slidable setting is in installation pipe (2011), and buckle (2015) of flexible pipe (2012) one end are blocked through the block section (2014) of installation pipe (2011) end for the length of reinforcement cover (201) is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320680261.7U CN219721519U (en) | 2023-03-30 | 2023-03-30 | Central venous pump pipe with protective structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320680261.7U CN219721519U (en) | 2023-03-30 | 2023-03-30 | Central venous pump pipe with protective structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219721519U true CN219721519U (en) | 2023-09-22 |
Family
ID=88028836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320680261.7U Active CN219721519U (en) | 2023-03-30 | 2023-03-30 | Central venous pump pipe with protective structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219721519U (en) |
-
2023
- 2023-03-30 CN CN202320680261.7U patent/CN219721519U/en active Active
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