CN211986524U - Device for preventing liquid from flowing reversely and infusion apparatus comprising same - Google Patents
Device for preventing liquid from flowing reversely and infusion apparatus comprising same Download PDFInfo
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- CN211986524U CN211986524U CN202020131072.0U CN202020131072U CN211986524U CN 211986524 U CN211986524 U CN 211986524U CN 202020131072 U CN202020131072 U CN 202020131072U CN 211986524 U CN211986524 U CN 211986524U
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Abstract
The utility model discloses a prevent liquid countercurrent device and include device's transfusion system, it includes upper cover, well lid, lower cover and silica gel piece, the upper cover is pegged graft at the inlet end of well lid, the end of giving vent to anger of well lid is provided with the seal groove with the inlet end fixed connection of lower cover, the end of giving vent to anger of well lid, the inlet end of lower cover is provided with the supporting shoe, the silica gel piece sets up between the terminal surface of supporting shoe and seal groove, be provided with guiding gutter and lug on the seal groove, the degree of depth that highly is less than the guiding gutter of lug. The utility model provides a prevent liquid countercurrent device and including device's transfusion system can effectively avoid the liquid medicine to soak filtration membrane.
Description
Technical Field
The utility model relates to a device for preventing liquid from flowing against the flow and an infusion apparatus comprising the same, belonging to the field of medical apparatus.
Background
At present, a disposable infusion set is used as the most common clinical infusion apparatus, and an air filtering membrane needs to be kept smooth at any time in the use process so that the infusion process can be carried out smoothly. But because air cleaner is linked together with bottle plug puncture ware, liquid medicine can last contact air filter membrane during the infusion, if the hydrophobic property of membrane material is not up to standard or the permeability of liquid medicine is stronger, lead to the membrane material to be moistened, can make the obstructed liquid medicine of admitting air normally drip, perhaps the liquid medicine can be followed air filter membrane internal surface and oozed and cause the leakage.
Disclosure of Invention
The utility model aims to solve the technical problem that, overcome prior art not enough, for solving above-mentioned technical problem, provide a prevent that liquid from reaching the transfusion system including device against the current, can effectively avoid the liquid medicine to soak filtration membrane.
In order to solve the technical problem, the technical scheme of the utility model is that:
the utility model provides a prevent liquid device against current, it includes upper cover, well lid, lower cover and silica gel piece, the upper cover is pegged graft at the inlet end of well lid, the end of giving vent to anger of well lid is fixed connection with the inlet end of lower cover, the end of giving vent to anger of well lid is provided with the seal groove, the inlet end of lower cover is provided with the supporting shoe, the silica gel piece sets up between the terminal surface of supporting shoe and seal groove, be provided with guiding gutter and lug on the seal groove, the degree of depth that highly is less than the guiding gutter of lug.
Furthermore, the inner wall of the air inlet end of the middle cover is provided with an annular groove, and the outer wall of the upper cover is provided with an annular bulge matched and clamped with the annular groove.
Further, an air filtering membrane is arranged between the air inlet end of the middle cover and the upper cover.
Furthermore, a gap is reserved at the joint of the air outlet end of the middle cover and the air inlet end of the lower cover, and the gap is used for filling glue to fixedly connect the middle cover and the lower cover.
The utility model provides an infusion set, it includes air intake duct, air cleaner and puncture ware, drip chamber, regulator, liquid medicine filter, venous catheter interface, venous catheter, the vein needle that are linked together in proper order through the infusion hose, the puncture ware communicates with air intake duct's one end, air intake duct's the other end and prevent the device intercommunication against the current of liquid, air cleaner communicates with the inlet end that prevents the device against the current of liquid.
After the technical scheme is adopted, the utility model discloses design one between the air cleaner of transfusion system and bottle plug puncture ware and prevent liquid device against the current, set up a thin silica gel piece in the device, the external air can flow to bottle plug puncture ware direction through this silica gel piece. The liquid in the infusion bottle can not flow to the air filtering membrane direction through the silica gel sheet, and the air filtering membrane can be effectively prevented from being soaked by the liquid medicine. The utility model has simple and practical structure and can adapt to various clinical transfusion conditions.
Drawings
FIG. 1 is a schematic view of the internal structure of the device for preventing liquid backflow according to the present invention;
fig. 2 is a schematic structural view of the infusion apparatus of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
Example one
As shown in fig. 1 and 2, a device 10 for preventing liquid from flowing backwards includes an upper cover 101, a middle cover 103, a lower cover 102, and a silica gel sheet 12, where the upper cover 101 is inserted into an air inlet end of the middle cover 103, an air outlet end of the middle cover 103 is fixedly connected to an air inlet end of the lower cover 102, the air outlet end of the middle cover 103 is provided with a sealing groove 13, the air inlet end of the lower cover 102 is provided with a supporting block 104, the supporting block 104 is used for supporting the silica gel sheet 12 when negative pressure exists in an air conduit 9, the silica gel sheet 12 is arranged between the supporting block 104 and an end surface of the sealing groove 13, the sealing groove 13 is provided with a guiding groove 131 and a protrusion 132, a height of the protrusion 132 is smaller than a depth of the guiding groove 131, and when positive pressure exists in the air conduit 9, the protrusion.
As shown in fig. 1, when the infusion starts or a nurse squeezes the dropping funnel 3, positive pressure exists in the air inlet duct 9, the positive pressure causes the silicone sheet 12 in the liquid backflow prevention device 10 to cling to the end face of the sealing groove 13, so that the liquid medicine is blocked in the lower shell 102, the silicone sheet 12 can bear the pressure of more than 50kPa, and the liquid medicine and the air filter 11 are in a separated state, which is suitable for various clinical infusion conditions;
along with the reduction of the liquid medicine in the infusion bottle, the pressure in the air inlet conduit 9 gradually becomes negative pressure, the silicon sheet 12 is opened towards the direction of the lower cover 102 under the action of the negative pressure, the pressure is less than 2kPa, the upper end and the lower end of the silicon sheet 12 are separated from the sealing groove 13, and the air inlet conduit 9 forms an air inlet passage with the outside through the flow guide groove 131 and the air filtering membrane 14, so that air inlet is realized.
As shown in fig. 1, an annular groove 106 is formed in the inner wall of the air inlet end of the middle cover 103, an annular protrusion 107 which is in fit and snap-fit connection with the annular groove 106 is formed in the outer wall of the upper cover 101, and the upper cover 101 is in snap-fit connection with the air filter 11 after being snap-fit connected into the air inlet end of the middle cover 103.
As shown in fig. 1, an air filtration membrane 14 is provided between the air inlet end of the middle cover 103 and the upper cover 101, and the air filtration membrane 14 is used for filtering particles and microorganisms in the air.
As shown in fig. 1, a gap 133 is left at the connection between the air outlet end of the middle cap 103 and the air inlet end of the lower cap 102, and the gap 133 is used for filling glue to fixedly connect the middle cap 103 and the lower cap 102.
Example two
As shown in fig. 2, the infusion apparatus comprises an air inlet duct 9, an air filter 11, a puncture outfit 1, a dropping funnel 3, a regulator 4, a liquid medicine filter 5, a venous duct interface 6, a venous duct 7 and a venous needle 8 which are sequentially communicated through an infusion hose 2, wherein the puncture outfit 1 is communicated with one end of the air inlet duct 9, the other end of the air inlet duct 9 is communicated with a lower cover 102 of a liquid backflow preventing device 10 in the first embodiment, and the air filter 11 is communicated with an upper cover 101 of the liquid backflow preventing device 10.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. An apparatus for preventing reverse flow of a liquid, comprising: it includes upper cover (101), well lid (103), lower cover (102) and silica gel piece (12), upper cover (101) are pegged graft at the inlet end of well lid (103), the end of giving vent to anger of well lid (103) is fixed connection with the inlet end of lower cover (102), the end of giving vent to anger of well lid (103) is provided with seal groove (13), the inlet end of lower cover (102) is provided with supporting shoe (104), silica gel piece (12) set up between the terminal surface of supporting shoe (104) and seal groove (13), be provided with guiding gutter (131) and lug (132) on seal groove (13), the degree of depth that highly is less than guiding gutter (131) of lug (132).
2. The apparatus for preventing reverse flow of liquid according to claim 1, wherein: the air inlet end inner wall of the middle cover (103) is provided with an annular groove (106), and the outer wall of the upper cover (101) is provided with an annular bulge (107) which is matched and clamped with the annular groove (106).
3. The apparatus for preventing reverse flow of liquid according to claim 2, wherein: an air filtering membrane (14) is arranged between the air inlet end of the middle cover (103) and the upper cover (101).
4. The apparatus for preventing reverse flow of liquid according to claim 1, wherein: a gap (133) is reserved at the joint of the air outlet end of the middle cover (103) and the air inlet end of the lower cover (102), and the gap (133) is used for filling glue to fixedly connect the middle cover (103) and the lower cover (102).
5. An infusion set is characterized in that: the anti-reflux puncture outfit comprises an air inlet duct (9), an air filter (11), and a puncture outfit (1), a dropping funnel (3), a regulator (4), a liquid medicine filter (5), a venous duct interface (6), a venous duct (7) and a venous needle (8) which are sequentially communicated through a transfusion hose (2), wherein the puncture outfit (1) is communicated with one end of the air inlet duct (9), the other end of the air inlet duct (9) is communicated with the anti-reflux liquid device according to any one of claims 1 to 4, and the air filter (11) is communicated with the air inlet end of the anti-reflux liquid device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020131072.0U CN211986524U (en) | 2020-01-20 | 2020-01-20 | Device for preventing liquid from flowing reversely and infusion apparatus comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020131072.0U CN211986524U (en) | 2020-01-20 | 2020-01-20 | Device for preventing liquid from flowing reversely and infusion apparatus comprising same |
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| Publication Number | Publication Date |
|---|---|
| CN211986524U true CN211986524U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020131072.0U Active CN211986524U (en) | 2020-01-20 | 2020-01-20 | Device for preventing liquid from flowing reversely and infusion apparatus comprising same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116533510A (en) * | 2023-06-12 | 2023-08-04 | 江苏康进医疗器材有限公司 | Film pressing equipment of precise filter shell and application method of film pressing equipment |
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2020
- 2020-01-20 CN CN202020131072.0U patent/CN211986524U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116533510A (en) * | 2023-06-12 | 2023-08-04 | 江苏康进医疗器材有限公司 | Film pressing equipment of precise filter shell and application method of film pressing equipment |
| CN116533510B (en) * | 2023-06-12 | 2024-03-12 | 江苏康进医疗器材有限公司 | Film pressing equipment of precise filter shell and application method of film pressing equipment |
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