CN218900344U - Anti-reflux ascites drainage instrument - Google Patents
Anti-reflux ascites drainage instrument Download PDFInfo
- Publication number
- CN218900344U CN218900344U CN202221859027.2U CN202221859027U CN218900344U CN 218900344 U CN218900344 U CN 218900344U CN 202221859027 U CN202221859027 U CN 202221859027U CN 218900344 U CN218900344 U CN 218900344U
- Authority
- CN
- China
- Prior art keywords
- ascites
- connecting cylinder
- inner cavity
- liquid
- reflux
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- External Artificial Organs (AREA)
Abstract
The utility model relates to the technical field of medical instruments and discloses an anti-backflow ascites drainage instrument which comprises a collecting barrel, wherein a drainage back-end component is arranged at the top end of the collecting barrel and used for extracting ascites fluid to enter an inner cavity of the collecting barrel, a connecting barrel is arranged in the drainage back-end component, a filtering component is arranged in the inner cavity of the connecting barrel and used for filtering other substances in the ascites and preventing a pipeline from being blocked, an anti-backflow component is arranged in the inner cavity of the connecting barrel and used for preventing the ascites from flowing backwards, a sealing ring is movably connected to the outer wall of the connecting barrel, a drainage front-end component is arranged on the outer wall of the connecting barrel and used for guiding the ascites fluid to be extracted, and the drainage back-end component comprises a miniature water pump. The utility model can not only prevent the liquid from flowing back, but also treat the blockage of the pipeline in time.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to an anti-reflux ascites drainage appliance.
Background
Some diseases can produce a great deal of ascites in the abdomen, such as cirrhosis and severe hepatitis, and some patients need to extract the ascites in the abdomen before operation, and an extraction instrument can be used.
The current liquid extraction instrument can have the phenomenon of liquid backflow in the use process, the operation process is influenced, and the condition that the pipeline is blocked and can not be treated in time exists in the liquid extraction process, so we provide an anti-backflow ascites liquid extraction instrument.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides an anti-reflux ascites drainage instrument which has the advantages of not only preventing the phenomenon of liquid backflow, but also timely treating the blockage of a pipeline and the like, and solves the problems that the phenomenon of liquid backflow can occur in the use process and the condition that the blockage of the pipeline cannot be timely treated in the drainage process.
(II) technical scheme
In order to achieve the purpose of not only preventing the liquid from flowing back but also timely treating the blockage of the pipeline, the utility model provides the following technical scheme: the anti-reflux ascites drainage instrument comprises a collection barrel, wherein a drainage rear end component is arranged at the top end of the collection barrel and is used for extracting ascites fluid into an inner cavity of the collection barrel;
the inside of the liquid suction rear end component is provided with a connecting cylinder, the inner cavity of the connecting cylinder is provided with a filtering component, and the filtering component is used for filtering other substances in ascites and preventing a pipeline from being blocked;
an inner cavity of the connecting cylinder is provided with an anti-reflux component which is used for preventing ascites from reflux;
the outer wall swing joint of connecting cylinder has the sealing washer, the outer wall of connecting cylinder is provided with the drawing liquid front end subassembly, the drawing liquid front end subassembly is used for guiding the extraction ascites.
As a preferable technical scheme of the utility model, the liquid suction rear end component comprises a miniature water pump, the bottom end of the miniature water pump is fixedly connected with the top end of the collecting barrel, the output end of the miniature water pump is fixedly provided with a liquid discharge pipe, the liquid discharge pipe is movably connected with the collecting barrel, the input end of the miniature water pump is fixedly provided with a liquid inlet pipe, one end of the liquid inlet pipe far away from the miniature water pump is fixedly provided with an external thread mounting cover, the external thread mounting cover is movably connected with the sealing ring, and the external thread mounting cover is movably connected with the connecting barrel.
As a preferable technical scheme of the utility model, an inner cavity of the connecting cylinder is provided with an inner thread groove interface, the inner thread groove interface is movably connected with the liquid suction back-end component, the outer surface of the connecting cylinder is provided with an outer thread interface, and the outer thread interface is movably connected with the liquid suction front-end component.
As a preferable technical scheme of the utility model, the filter assembly comprises a fixed ring, wherein the fixed ring is fixedly connected with the inner cavity of the connecting cylinder, a first spring is fixedly arranged at the top end of the fixed ring, a filter plate is movably connected with one end of the first spring, which is far away from the fixed ring, and the filter plate is movably connected with the inner cavity of the connecting cylinder.
As a preferable technical scheme of the utility model, the anti-countercurrent assembly comprises a fixed block, a second spring is fixedly arranged at the top end of the fixed block, the second spring is in a compressed state, a rubber ball is fixedly arranged at one end of the second spring far away from the fixed block, a cylindrical piece is arranged on the outer wall of the rubber ball, the cylindrical piece is fixedly connected with the inner cavity of the connecting cylinder, a conical funnel is fixedly arranged in the inner cavity of the connecting cylinder, and the conical funnel is positioned below the fixed block.
As a preferable technical scheme of the utility model, a through hole is formed in the top end of the cylindrical sheet, an inner cavity of the through hole is movably connected with the rubber ball, and the inner diameter of the rubber ball is larger than that of the through hole.
As a preferable technical scheme of the utility model, the liquid suction front end component comprises an internal thread installation cover, the internal thread installation cover is movably connected with the connecting cylinder, a connecting hose is fixedly arranged in the internal thread installation cover, and a liquid suction head is fixedly arranged at one end of the connecting hose, which is far away from the internal thread installation cover.
(III) beneficial effects
Compared with the prior art, the utility model provides an anti-reflux ascites drainage instrument, which has the following beneficial effects:
1. this prevent ascites drawing liquid apparatus against current sets up through connecting tube inner chamber and prevents against current the subassembly, this moment the ascites flows into the toper funnel inner chamber through the through-hole, again by the toper funnel inner chamber inflow drawing liquid rear end subassembly in, rubber ball is because of receiving the impact of ascites and to the fixed block direction removes during this, and keep away from the inner chamber of through-hole, and the second spring receives the extrusion and take place elastic deformation, when miniature water pump stops drawing ascites, there is the negative pressure and there is ascites in the connecting tube, and there is ascites in connecting tube inner chamber to flow back, at this moment when there is not the impact of ascites, the second spring is not received the extrusion, remain compressed state throughout, wherein the rubber ball of installing in second spring one end is the through-hole that the cylinder piece inside offered is blocked, thereby prevent that the ascites from flowing back.
2. This prevent ascites drainage apparatus against current filters through setting up filter assembly at the connecting cylinder inner chamber, and swing joint filters at the filter plate of connecting cylinder inner chamber this moment, and first spring takes place elastic deformation because of receiving ascites impact force, when the connecting cylinder blocks up, can select to demolish the external screw thread installation lid in the drawing liquid front end subassembly to clear up debris after the filter plate filters, thereby can timely handle the jam.
Drawings
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is a perspective view of a connecting cylinder according to the present utility model;
fig. 3 is a semi-cutaway perspective view of the connector barrel of the present utility model.
In the figure: 1. a collecting barrel; 2. a liquid-drawing back-end assembly; 201. a micro water pump; 202. a liquid discharge pipe; 203. a liquid inlet pipe; 204. an external thread mounting cover; 3. a connecting cylinder; 301. an internal thread groove interface; 302. an external threaded interface; 4. a filter assembly; 401. a fixing ring; 402. a first spring; 403. a filter sheet; 5. an anti-reflux assembly; 501. a fixed block; 502. a second spring; 503. rubber balls; 504. a cylindrical sheet; 505. a through hole; 506. a conical funnel; 6. a seal ring; 7. a liquid pumping front end component; 701. an internal thread mounting cover; 702. connecting a hose; 703. and a liquid extracting head.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, an anti-reflux ascites drainage apparatus comprises a collection barrel 1, wherein a drainage back-end assembly 2 is arranged at the top end of the collection barrel 1, and the drainage back-end assembly 2 is used for extracting ascites fluid into an inner cavity of the collection barrel 1;
the inside of the liquid suction back-end component 2 is provided with a connecting cylinder 3, the inner cavity of the connecting cylinder 3 is provided with a filtering component 4, and the filtering component 4 is used for filtering other substances in ascites and preventing a pipeline from being blocked;
an inner cavity of the connecting cylinder 3 is provided with an anti-reflux component 5, and the anti-reflux component 5 is used for preventing ascites from reflux;
the outer wall swing joint of connecting cylinder 3 has sealing washer 6, and the outer wall of connecting cylinder 3 is provided with drawing liquid front end subassembly 7, and drawing liquid front end subassembly 7 is used for guiding the extraction ascites.
Specifically, the rear end component 2 of the liquid suction comprises a miniature water pump 201, the bottom end of the miniature water pump 201 is fixedly connected with the top end of the collecting barrel 1, a liquid discharge pipe 202 is fixedly arranged at the output end of the miniature water pump 201, the liquid discharge pipe 202 is movably connected with the collecting barrel 1, a liquid inlet pipe 203 is fixedly arranged at the input end of the miniature water pump 201, an external thread installation cover 204 is fixedly arranged at one end, far away from the miniature water pump 201, of the liquid inlet pipe 203, the external thread installation cover 204 is movably connected with the sealing ring 6, and the external thread installation cover 204 is movably connected with the connecting barrel 3.
In this embodiment, by starting the micro water pump 201 fixed on the top end of the collecting tank 1, the micro water pump 201 fixed on the top end of the collecting tank 1 pumps the ascites from the front end component 7 of the liquid, through the connecting tube 3, the filtering component 4 and the anti-backflow component 5, then to the inner cavity of the liquid inlet pipe 203 installed on the input end of the micro water pump 201, and then the micro water pump 201 fixed on the top end of the collecting tank 1 discharges the ascites from the inner cavity of the liquid outlet pipe 202 installed on the output end of the micro water pump 201 to the inside of the collecting tank 1, thereby facilitating the extraction of the ascites and the collection of the ascites.
Specifically, an inner cavity of the connecting cylinder 3 is provided with an inner thread groove interface 301, the inner thread groove interface 301 is movably connected with the liquid pumping rear end assembly 2, the outer surface of the connecting cylinder 3 is provided with an outer thread interface 302, and the outer thread interface 302 is movably connected with the liquid pumping front end assembly 7.
In this embodiment, an inner threaded groove interface 301 is formed in the inner cavity of the connecting tube 3, so that the outer threaded mounting cover 204 in the rear end assembly 2 for liquid extraction is convenient to mount, and an outer threaded interface 302 is formed on the outer surface of the connecting tube 3, so that the front end assembly 7 for liquid extraction is convenient to mount.
Specifically, the filtering component 4 comprises a fixed ring 401, the fixed ring 401 is fixedly connected with the inner cavity of the connecting cylinder 3, a first spring 402 is fixedly arranged at the top end of the fixed ring 401, a filter plate 403 is movably connected to one end, far away from the fixed ring 401, of the first spring 402, and the filter plate 403 is movably connected with the inner cavity of the connecting cylinder 3.
In this embodiment, the inner cavity of the connecting cylinder 3 is provided with the filtering component 4, when the mini water pump 201 extracts the ascites, the ascites and other impurities are extracted into the connecting cylinder 3 at the same time, the filter disc 403 movably connected to the inner cavity of the connecting cylinder 3 filters the ascites, and the first spring 402 is elastically deformed due to the impact force of the ascites, when the pipeline is blocked, the front end component 7 of the liquid suction can be selectively removed to clean the impurities filtered by the filter disc 403, so that the pipeline can be timely blocked.
Specifically, the anti-countercurrent assembly 5 comprises a fixed block 501, a second spring 502 is fixedly installed at the top end of the fixed block 501, the second spring 502 is in a compressed state, a rubber ball 503 is fixedly installed at one end, far away from the fixed block 501, of the second spring 502, a cylindrical sheet 504 is arranged on the outer wall of the rubber ball 503, the cylindrical sheet 504 is fixedly connected with the inner cavity of the connecting cylinder 3, a conical funnel 506 is fixedly installed in the inner cavity of the connecting cylinder 3, and the conical funnel 506 is located below the fixed block 501.
In this embodiment, when the mini water pump 201 pumps the ascites, the ascites filtered by the filter assembly 4 flows into the inner cavity of the cone-shaped funnel 506 through the inner cavity of the cylindrical piece 504, and then flows into the pumping back-end assembly 2 through the inner cavity of the cone-shaped funnel 506, during which the rubber ball 503 moves towards the fixed block 501 fixed in the inner cavity of the connecting cylinder 3 due to the impact of the ascites, and the second spring 502 is extruded to generate elastic deformation, when the mini water pump 201 stops pumping, the connecting cylinder 3 has negative pressure at this time, the ascites in the inner cavity of the connecting cylinder 3 flows back, and when the ascites does not impact, the second spring 502 is not extruded, always keeps a compressed state, and blocks the through hole 505 formed in the inner of the cylindrical piece 504, thereby preventing the ascites from flowing back.
Specifically, a through hole 505 is formed in the top end of the cylindrical piece 504, the inner cavity of the through hole 505 is movably connected with the rubber ball 503, and the inner diameter of the rubber ball 503 is larger than the inner diameter of the through hole 505.
In this embodiment, a through hole 505 is formed inside the top end of the cylindrical piece 504, and the inner diameter of the through hole 505 is smaller than the inner diameter of the rubber ball 503, so that the rubber ball 503 can conveniently block the inner cavity of the through hole 505.
Specifically, the front end module 7 includes an internal thread mounting cover 701, a movable connection is provided between the internal thread mounting cover 701 and the connecting cylinder 3, a connection hose 702 is fixedly installed in the internal thread mounting cover 701, and a liquid extraction head 703 is fixedly installed at one end of the connection hose 702 far away from the internal thread mounting cover 701.
In this embodiment, the ascites in the abdomen of the patient is pumped to the inner cavity of the connecting cylinder 3 through the liquid pumping head 703 and the connecting hose 702 fixed inside the liquid pumping head 703 by placing the liquid pumping head 703 at a designated position and then pumping the micro water pump 201 in the rear end component 2, so that the ascites can be conveniently guided and pumped.
Working principle: when the miniature pump is used, the liquid suction head 703 is placed at a designated position of the abdomen of a patient, then the miniature pump 201 fixed at the top end of the collecting barrel 1 is started, the miniature pump 201 fixed at the top end of the collecting barrel 1 pumps the ascites into the inner cavity of the connecting barrel 3 through the connecting hose 702 fixed in the liquid suction head 703, the filtering component 4 arranged in the inner cavity of the connecting barrel 3 filters at the moment, the filtering piece 403 movably connected in the inner cavity of the connecting barrel 3 filters at the moment, the first spring 402 elastically deforms due to the impact force of the ascites, when the connecting barrel 3 is blocked, the external thread mounting cover 204 in the front end component 7 of the ascites can be selectively removed, impurities filtered by the filtering piece 403 are cleaned, so that the blockage can be treated timely, meanwhile, the miniature pump 201 arranged in the inner cavity of the connecting barrel 3 flows into the inner cavity of the conical funnel 506 through the through hole 505 formed in the cylindrical piece 504, the ascites flows into the inner cavity of the conical funnel 506, the inner cavity of the ascites is extruded by the rubber ball 503 moves towards the direction of the fixed block fixed in the inner cavity of the connecting barrel 3 due to the impact of the ascites, and is far away from the inner cavity of the through hole 505, the inner cavity of the filter piece 505, and the second spring 402 is extruded by the miniature pump 201 is arranged at the inner cavity 201 and then is conveniently arranged at the top end of the collecting barrel 201 of the collecting barrel 1, and the miniature pump 201 is arranged at the inner end of the collecting barrel 201 is conveniently is arranged at the top end of the collecting tube 201, and is conveniently is blocked, and is arranged at the front of the miniature pump 201 is arranged at the front end of the collecting tube 201;
when the miniature water pump 201 stops pumping the ascites, the connecting cylinder 3 has negative pressure and the ascites is present, and the ascites in the inner cavity of the connecting cylinder 3 flows back, at the moment, when no ascites is impacted, the second spring 502 is not extruded, and the compression state is always kept, wherein the rubber ball 503 arranged at one end of the second spring 502 blocks the through hole 505 arranged in the cylindrical sheet 504, thereby preventing the ascites from flowing back.
It should be noted that in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An anti-reflux ascites drainage instrument, which comprises a collecting barrel (1), and is characterized in that: the top end of the collecting barrel (1) is provided with a liquid suction back-end assembly (2), and the liquid suction back-end assembly (2) is used for sucking ascites liquid into an inner cavity of the collecting barrel (1);
the inside of the liquid suction rear end component (2) is provided with a connecting cylinder (3), the inner cavity of the connecting cylinder (3) is provided with a filtering component (4), and the filtering component (4) is used for filtering other substances in ascites and preventing a pipeline from being blocked;
an inner cavity of the connecting cylinder (3) is provided with an anti-reflux component (5), and the anti-reflux component (5) is used for preventing ascites from reflux;
the outer wall swing joint of connecting cylinder (3) has sealing washer (6), the outer wall of connecting cylinder (3) is provided with drawing liquid front end subassembly (7), drawing liquid front end subassembly (7) are used for guiding the extraction ascites.
2. An anti-reflux ascites drainage device as claimed in claim 1 wherein: the liquid suction rear end assembly (2) comprises a miniature water pump (201), the bottom of the miniature water pump (201) is fixedly connected with the top end of the collecting barrel (1), a liquid discharge pipe (202) is fixedly arranged at the output end of the miniature water pump (201), the liquid discharge pipe (202) is movably connected with the collecting barrel (1), a liquid inlet pipe (203) is fixedly arranged at the input end of the miniature water pump (201), an external thread installation cover (204) is fixedly arranged at one end, far away from the miniature water pump (201), of the liquid inlet pipe (203), the external thread installation cover (204) is movably connected with the sealing ring (6), and the external thread installation cover (204) is movably connected with the connecting barrel (3).
3. An anti-reflux ascites drainage device as claimed in claim 1 wherein: an inner cavity of the connecting cylinder (3) is provided with an inner thread groove interface (301), the inner thread groove interface (301) is movably connected with the liquid suction rear end assembly (2), the outer surface of the connecting cylinder (3) is provided with an outer thread interface (302), and the outer thread interface (302) is movably connected with the liquid suction front end assembly (7).
4. An anti-reflux ascites drainage device as claimed in claim 1 wherein: the filter component (4) comprises a fixed ring (401), the fixed ring (401) is fixedly connected with the inner cavity of the connecting cylinder (3), a first spring (402) is fixedly arranged at the top end of the fixed ring (401), a filter plate (403) is movably connected with one end, far away from the fixed ring (401), of the first spring (402), and the filter plate (403) is movably connected with the inner cavity of the connecting cylinder (3).
5. An anti-reflux ascites drainage device as claimed in claim 1 wherein: the anti-countercurrent assembly (5) comprises a fixed block (501), a second spring (502) is fixedly arranged at the top end of the fixed block (501), the second spring (502) is in a compressed state, a rubber ball (503) is fixedly arranged at one end of the second spring (502) away from the fixed block (501), a cylindrical sheet (504) is arranged on the outer wall of the rubber ball (503), the cylindrical sheet (504) is fixedly connected with the inner cavity of the connecting cylinder (3), a conical funnel (506) is fixedly arranged in the inner cavity of the connecting cylinder (3), and the conical funnel (506) is located below the fixed block (501).
6. An anti-reflux ascites fluid withdrawal device as defined in claim 5 wherein: through holes (505) are formed in the top ends of the cylindrical sheets (504), the inner cavities of the through holes (505) are movably connected with the rubber balls (503), and the inner diameters of the rubber balls (503) are larger than those of the through holes (505).
7. An anti-reflux ascites drainage device as claimed in claim 1 wherein: the liquid sucking front end assembly (7) comprises an internal thread installation cover (701), the internal thread installation cover (701) is movably connected with the connecting cylinder (3), a connecting hose (702) is fixedly installed in the internal thread installation cover (701), and a liquid sucking head (703) is fixedly installed at one end, far away from the internal thread installation cover (701), of the connecting hose (702).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221859027.2U CN218900344U (en) | 2022-07-19 | 2022-07-19 | Anti-reflux ascites drainage instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221859027.2U CN218900344U (en) | 2022-07-19 | 2022-07-19 | Anti-reflux ascites drainage instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218900344U true CN218900344U (en) | 2023-04-25 |
Family
ID=86008485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221859027.2U Active CN218900344U (en) | 2022-07-19 | 2022-07-19 | Anti-reflux ascites drainage instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218900344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116570778A (en) * | 2023-05-05 | 2023-08-11 | 中国人民解放军总医院第一医学中心 | Self-help sputum aspirator |
-
2022
- 2022-07-19 CN CN202221859027.2U patent/CN218900344U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116570778A (en) * | 2023-05-05 | 2023-08-11 | 中国人民解放军总医院第一医学中心 | Self-help sputum aspirator |
| CN116570778B (en) * | 2023-05-05 | 2024-01-26 | 中国人民解放军总医院第一医学中心 | Self-help sputum aspirator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218900344U (en) | Anti-reflux ascites drainage instrument | |
| CN207547207U (en) | A kind of underground sump oil can washing apparatus | |
| CN203616173U (en) | Sewage sampling device | |
| CN217630343U (en) | Connecting device of municipal drainage pipeline | |
| CN216295387U (en) | Prevent blockking up effectual basket filter | |
| CN215830730U (en) | Agricultural bidirectional symmetrical self-sucking pump | |
| CN219691855U (en) | Water pump of water jet device | |
| CN211753034U (en) | Sewage filter | |
| CN220910004U (en) | Non-blocking self-priming pump | |
| CN113877268A (en) | Sewage treatment filtering component | |
| CN2649165Y (en) | Filter | |
| CN216878238U (en) | Integrated waste oil collector | |
| CN113952779B (en) | Filter for aluminum processing sewage treatment | |
| CN219860721U (en) | Phenol ammonia waste water ceramic membrane deoiling processing apparatus | |
| CN221236843U (en) | Hierarchical formula water sampling pump | |
| CN219847569U (en) | Anti-blocking bile drainage device | |
| CN205349631U (en) | Pressure water pump | |
| CN216741414U (en) | Circulating sleeve for petroleum drilling | |
| CN219376706U (en) | Nanofiltration device for sewage treatment | |
| CN221557011U (en) | Surgical aspirator head structure | |
| CN219372821U (en) | Drainer shell structure convenient to disassemble and assemble | |
| CN218979091U (en) | Safe and reliable's calculus suction means | |
| CN215627435U (en) | High-efficient sewage treatment device | |
| CN219161698U (en) | Sampling device for sewage treatment | |
| CN219888366U (en) | Filtering structure for energy-saving water pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |