CN201533946U - Medical one-way valve - Google Patents
Medical one-way valve Download PDFInfo
- Publication number
- CN201533946U CN201533946U CN2009202505081U CN200920250508U CN201533946U CN 201533946 U CN201533946 U CN 201533946U CN 2009202505081 U CN2009202505081 U CN 2009202505081U CN 200920250508 U CN200920250508 U CN 200920250508U CN 201533946 U CN201533946 U CN 201533946U
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- CN
- China
- Prior art keywords
- valve
- valve body
- duck mouth
- spool
- valve core
- 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 - Lifetime
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Abstract
The utility model relates to a medical one-way valve, which includes a valve body, a valve deck as well as a valve core equipped inside the valve body, and is characterized in that: the valve body and the valve deck are made from plastic apparent material, and the duck mouth-shaped valve core made from elastic material is equipped inside the valve body, and the connection end of the valve deck, the valve body and pipeline forms a Ruhr-cone structure. The utility model has the advantages that: when no medium flows under the natural state, the valve core duck mouth top is in a closed state. When liquid or gas flows in the forward direction, the valve core duck mouth spreads out forward under a certain impact, and the medium can smoothly flow through the duckbilled end; when liquid or gas flows in the reverse direction, the pressure generated from the flowing medium acts on the external part of the duck mouth-shaped bevel of the valve core, under the acting force, the duck mouth top is compacted, thereby the flowing medium can not go through. The one-way valve has a simple structure and lower production cost, and is specially suitable for the disposal extracorporeal circulation pipeline.
Description
Technical field
This utility model belongs to technical field of medical instruments, particularly relates to a kind of medical check valve.
Background technology
The doctor is clinical when doing cardiac operation under direct vision, needs routine to set up extracorporeal circulation system and replaces cardio-pulmonary function.The general supporting pipeline of disposable extracorporeal circulation that adopts of described extracorporeal circulation system inserts patient's caval vein with intubate or aorta cooperates suction pump and respirator to realize extracorporeal circulation again.The supporting pipeline of disposable extracorporeal circulation in clinical use is not provided with check valve, causes liquid to flow backwards in case suction pump is misrouted, even forms aeroembolism, and then can't guarantee its safety.At present, in the extracorporeal circulation pipeline, also have and adopt the one-way valve structures that controlling liquid flows to, the structure of check valve is to be made of spring leaf, baffle plate and silica gel sealing ring, spring leaf and baffle plate adopt the rustless steel manufacturing usually, this kind check valve cost is higher, weight is heavier, can't be applicable to disposable extracorporeal circulation pipeline.
Summary of the invention
This utility model for solve the technical problem that exists in the known technology provide a kind of simple in structure, can reduce manufacturing cost and be applicable to the medical check valve that disposable extracorporeal circulation pipeline uses.
The technical scheme that this utility model is taked for the technical problem that exists in the solution known technology is:
Medical check valve, comprise valve body, valve gap and be arranged on the intravital spool of valve, it is characterized in that: described valve body and valve gap adopt plastic transparent material to make, and be provided with elastomeric material and make the spool that is duckbill in valve body, and described valve gap and valve body and pipeline link are Rule pyramidal structure.
This utility model can also adopt following technical scheme:
Described spool is that silica gel is made.
The tapering of described valve gap, valve body and pipeline link pyramidal structure is 6%.
Advantage and the good effect that the utlity model has are: because this utility model adopts technique scheme, during no media flow, spool duckbilled top is closure state under naturalness.When liquid or gas forward flow, the spool duckbilled forward opens under certain impulse force, and at this moment, medium can pass through the duckbilled port of spool smoothly.When liquid or gas reverse flow, the pressure that its flow media produces acts on the outside, duckbill inclined-plane of spool, and under this active force, the duckbilled top can be compacted, and flow media can't be passed through.Flowing pressure is big more within the specific limits, and it is tight more that the spool duckbilled is pressed.This utility model is simple in structure, cost of manufacture is cheap, is specially adapted to disposable extracorporeal circulation pipeline.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is this utility model decomposing schematic representation.
Among the figure: 1, valve gap; 2, valve body; 3, spool.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1 and Fig. 2, medical check valve comprises valve body 2, valve gap 1 and is arranged on the intravital spool 3 of valve that described valve body and valve gap all adopt plastic transparent material to make, and can be spool so the transparent visual field is provided.Be provided with elastomeric material and make the spool 3 that is duckbill in valve body 2, spool one end margin is stuck on the port of valve body one end, and valve gap and valve body are buckled together, and spool edge is compressed.Connect for being convenient to other pipeline, described valve gap 1 and valve body 2 are Rule pyramidal structure with the pipeline link, and the tapering of its pyramidal structure is 6%.
Under the naturalness, during no media flow, spool duckbilled top is closure state.When liquid or gas forward flow, the spool duckbilled forward opens under certain impulse force, and at this moment, medium can pass through the duckbilled port of spool smoothly.When liquid or gas reverse flow, the pressure that its flow media produces acts on the outside, duckbill inclined-plane of spool, and under this active force, the duckbilled top can be compacted, and flow media can only unidirectionally can not passed through.Flowing pressure is big more within the specific limits, and it is tight more that the spool duckbilled is pressed, and duckbill structure has formed a check valve thus.
Claims (3)
1. medical check valve, comprise valve body, valve gap and be arranged on the intravital spool of valve, it is characterized in that: described valve body and valve gap adopt plastic transparent material to make, be provided with elastomeric material and make the spool that is duckbill in valve body, described valve gap and valve body and pipeline link are Rule pyramidal structure.
2. medical check valve according to claim 1 is characterized in that: described spool is that silica gel is made.
3. medical check valve according to claim 1 is characterized in that: the tapering of described valve gap, valve body and pipeline link pyramidal structure is 6%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202505081U CN201533946U (en) | 2009-11-19 | 2009-11-19 | Medical one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202505081U CN201533946U (en) | 2009-11-19 | 2009-11-19 | Medical one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201533946U true CN201533946U (en) | 2010-07-28 |
Family
ID=42533733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202505081U Expired - Lifetime CN201533946U (en) | 2009-11-19 | 2009-11-19 | Medical one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201533946U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107899131A (en) * | 2013-03-12 | 2018-04-13 | 康尔福盛303公司 | Plug-in type luer connector including the valve with fluid path seal part and ventilation path seal |
| CN107929833A (en) * | 2017-12-28 | 2018-04-20 | 广州润虹医药科技股份有限公司 | A kind of anti-backflow negative pressure drainage device |
| CN108042863A (en) * | 2018-01-25 | 2018-05-18 | 江苏创品工业设计有限公司 | Portable breast pump |
| CN109124799A (en) * | 2018-09-30 | 2019-01-04 | 天津伊腾圣杰医疗器械有限公司 | A kind of imbibition check-valves |
| CN109125863A (en) * | 2018-09-30 | 2019-01-04 | 天津伊腾圣杰医疗器械有限公司 | A kind of multi-functional injecting assembly |
| CN109172928A (en) * | 2018-09-30 | 2019-01-11 | 天津伊腾圣杰医疗器械有限公司 | A kind of injection catheter check-valves |
-
2009
- 2009-11-19 CN CN2009202505081U patent/CN201533946U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107899131A (en) * | 2013-03-12 | 2018-04-13 | 康尔福盛303公司 | Plug-in type luer connector including the valve with fluid path seal part and ventilation path seal |
| US11213668B2 (en) | 2013-03-12 | 2022-01-04 | Carefusion 303, Inc. | Male Luer with fluid path and vent path seals |
| CN107929833A (en) * | 2017-12-28 | 2018-04-20 | 广州润虹医药科技股份有限公司 | A kind of anti-backflow negative pressure drainage device |
| CN108042863A (en) * | 2018-01-25 | 2018-05-18 | 江苏创品工业设计有限公司 | Portable breast pump |
| CN108042863B (en) * | 2018-01-25 | 2023-09-01 | 江苏创品工业设计有限公司 | portable breast pump |
| CN109124799A (en) * | 2018-09-30 | 2019-01-04 | 天津伊腾圣杰医疗器械有限公司 | A kind of imbibition check-valves |
| CN109125863A (en) * | 2018-09-30 | 2019-01-04 | 天津伊腾圣杰医疗器械有限公司 | A kind of multi-functional injecting assembly |
| CN109172928A (en) * | 2018-09-30 | 2019-01-11 | 天津伊腾圣杰医疗器械有限公司 | A kind of injection catheter check-valves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100728 |
|
| CX01 | Expiry of patent term |