CN203694396U - One-way valve for infusion set - Google Patents
One-way valve for infusion set Download PDFInfo
- Publication number
- CN203694396U CN203694396U CN201420008453.4U CN201420008453U CN203694396U CN 203694396 U CN203694396 U CN 203694396U CN 201420008453 U CN201420008453 U CN 201420008453U CN 203694396 U CN203694396 U CN 203694396U
- Authority
- CN
- China
- Prior art keywords
- valve
- base
- infusion channel
- liquid
- filtering film
- 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.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a one-way valve for an infusion set. The one-way valve comprises a valve body, wherein the valve body is composed of a base and a valve cover, a valve cavity is formed in the base and the valve cover, the base and the valve cover are respectively provided with an infusion channel communicated with the valve cavity, the lower portion of the valve cavity is provided with a medicine liquid filtering film covering the infusion channel in the base, the periphery of the infusion channel in the base is provided with multiple medicine liquid filtering film supporting columns, a check valve element matched with the infusion channel in the valve cover is arranged in the valve cavity above the medicine liquid filtering film, and the bottom area of the check valve element is smaller than the surface area of the medicine liquid filtering film. According to the one-way valve, the medicine liquid filtering film supports the check valve element, and when liquid flows forward, the liquid pushes the check valve element to move downward and moves away from the infusion channel in the valve cover, and the liquid enters the bottom of the valve cavity through the medicine liquid filtering film and flows out from the infusion channel in the base; when the liquid flows backward, the check valve element upward plugs the infusion channel in the valve cover under the pressure action of the liquid, and accordingly the liquid is prevented from refluxing.
Description
Technical field
This utility model relates to a kind of area of medical devices, particularly a kind of transfusion device check valve.
Background technology
Venous transfusion, as a kind for the treatment of means of routine, is accepted by doctor and patient.Often there will be clinically the situation that needs Quick-adding medicine; while transfusion as patient, there is infusion reaction and emergency unit's rescue patient such as allergy, shock; in the process of dosing; easily upwards there is the phenomenon of adverse current in medicinal liquid; can not enter fast human body; extend rescue time, reduced dosing effect.
Summary of the invention
Technical problem to be solved in the utility model is for the deficiencies in the prior art, provides a kind of reasonable in design, prevents the transfusion device check valve of liquid countercurrent.
Technical problem to be solved in the utility model is to realize by following technical scheme, this utility model is a kind of transfusion device check valve, be characterized in: comprise valve body, valve body is made up of base and valve gap, in base and valve gap, be provided with valve pocket, on base and valve gap, be respectively equipped with the infusion channel being communicated with valve pocket, the bottom of valve pocket is provided with the liquid medicine filtering membrane of covering base infusion channel, the periphery of base infusion channel is provided with some liquid medicine filtering membrane support columns, in the valve pocket of liquid medicine filtering membrane top, be provided with the cut-off spool coordinating with the infusion channel on valve gap, the floor space of cut-off spool is less than the surface area of liquid medicine filtering membrane.
Technical problem to be solved in the utility model can also further realize by following technical scheme, described cut-off spool comprises cone rubber housing, the top of cone rubber housing is provided with the guide post that stretches into valve gap infusion channel, and the end cornice of cone rubber housing is provided with concavo-convex sawtooth.
This utility model supports cut-off spool by liquid medicine filtering membrane, and when liquid positive flow, liquid-driving cut-off spool moves down the infusion channel of leaving on valve gap, and liquid enters the bottom of valve pocket from liquid medicine filtering membrane, and flows out by the infusion channel on base; In the time of liquid countercurrent, under fluid pressure effect, cut-off spool is upwards blocked the infusion channel on valve gap, thereby stops liquid countercurrent.Compared with prior art, it is reasonable in design, simple in structure, easy to use, can effectively prevent liquid countercurrent.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the structural representation of cut-off spool.
Detailed description of the invention
Referring to accompanying drawing, further describe concrete technical scheme of the present utility model, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
With reference to Fig. 1, a kind of transfusion device check valve, comprises valve body, valve body is made up of base 1 and valve gap 2, and valve gap 2 can be taper, is provided with valve pocket 8 in base 1 and valve gap 2, on base 1 and valve gap 2, be respectively equipped with the infusion channel 3,6 being communicated with valve pocket 8, infusion channel 3,6 is communicated with tube for transfusion.The bottom of valve pocket 8 is provided with the liquid medicine filtering membrane 7 of covering base infusion channel 6, the periphery of base 1 infusion channel is provided with some liquid medicine filtering membrane support columns 5, can prevent feed liquor time or cut-off spool 4 on liquid medicine filtering membrane 7 time, liquid medicine filtering membrane 7 is attached on base 1, makes liquid communication not smooth.In the valve pocket 8 of liquid medicine filtering membrane 7 tops, be provided with the cut-off spool 4 coordinating with logical 3 roads of transfusion on valve gap 2, cut-off spool 4 is lightweight, and the floor space of cut-off spool 4 is less than the surface area of liquid medicine filtering membrane 7.
When liquid positive flow, medicinal liquid promotes cut-off spool 4 and moves down the infusion channel 3 of leaving on valve gap 2, spool 4 is rear is held by liquid medicine filtering membrane 7 in cut-off, liquid medicine filtering membrane support column 5 also can assist to support cut-off spool 4, because the floor space of cut-off spool 4 is less than the surface area of liquid medicine filter, so liquid enters valve pocket 8 bottoms from the surrounding of liquid medicine filtering membrane 7, and flow out by the infusion channel 6 on base 1.In the time of liquid countercurrent, under fluid pressure effect, cut-off spool 4 is upwards blocked the infusion channel 3 on valve gap 2, thereby stops liquid countercurrent.
With reference to Fig. 2, described cut-off spool 4 comprises cone rubber housing 42, the top of cone rubber housing 42 is provided with the guide post 41 that stretches into valve gap infusion channel 3, while having liquid countercurrent, cone rubber housing 42 is under the effect of fluid pressure, by guide post 41 channeling directions, make cone rubber housing 42 block accurately the infusion channel 3 on valve gap 2, thereby can stop fast liquid countercurrent.The end cornice of cone rubber housing 42 is provided with concavo-convex sawtooth 43, can auxiliary air compensating, and accelerate cone rubber housing 42 and move upward.
This utility model check valve can also be contained in the pipelines such as catheter, sputum aspirator tube, extension tube, for preventing liquid countercurrent.
Claims (2)
1. a transfusion device check valve, it is characterized in that: comprise valve body, valve body is made up of base and valve gap, in base and valve gap, be provided with valve pocket, on base and valve gap, be respectively equipped with the infusion channel being communicated with valve pocket, the bottom of valve pocket is provided with the liquid medicine filtering membrane of covering base infusion channel, the periphery of base infusion channel is provided with some liquid medicine filtering membrane support columns, in the valve pocket of liquid medicine filtering membrane top, be provided with the cut-off spool coordinating with the infusion channel on valve gap, the floor space of cut-off spool is less than the surface area of liquid medicine filtering membrane.
2. transfusion device check valve according to claim 1, it is characterized in that: described cut-off spool comprises cone rubber housing, the top of cone rubber housing is provided with the guide post that stretches into valve gap infusion channel, and the end cornice of cone rubber housing is provided with concavo-convex sawtooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420008453.4U CN203694396U (en) | 2014-01-07 | 2014-01-07 | One-way valve for infusion set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420008453.4U CN203694396U (en) | 2014-01-07 | 2014-01-07 | One-way valve for infusion set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203694396U true CN203694396U (en) | 2014-07-09 |
Family
ID=51044900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420008453.4U Expired - Fee Related CN203694396U (en) | 2014-01-07 | 2014-01-07 | One-way valve for infusion set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203694396U (en) |
-
2014
- 2014-01-07 CN CN201420008453.4U patent/CN203694396U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20170107 |