CN207856069U - Medical check valve - Google Patents
Medical check valve Download PDFInfo
- Publication number
- CN207856069U CN207856069U CN201720832284.XU CN201720832284U CN207856069U CN 207856069 U CN207856069 U CN 207856069U CN 201720832284 U CN201720832284 U CN 201720832284U CN 207856069 U CN207856069 U CN 207856069U
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- CN
- China
- Prior art keywords
- check valve
- medical check
- boss
- valve casing
- accommodating chamber
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Abstract
The utility model discloses a kind of Medical check valves, its key points of the technical solution are that including valve casing and the spool being set in valve casing, the accommodating chamber for accommodating spool is provided in the valve casing, one end of the valve casing is provided with the feed pathway being connected to the accommodating chamber, the other end is provided with the liquid outlet channel being connected to the accommodating chamber, the spool includes cylinder and is set to the film of cylinder one end, the thin film center is provided with through-hole, the feed pathway is provided with the boss that area is more than the via area, the boss is connect with the side wall of the feed pathway by interconnecting piece, and several flowing holes are formed between the boss and the side wall of the feed pathway.The utility model solve the problems, such as existing Medical check valve by withdrawing fluid speed and pressure limit cause reflux stop liquid it is ineffective.
Description
Technical field
The utility model is related to aseptic medical equipment fields, more specifically, it, which is related to one kind, being applied to infusion pipeline, draw
Medical check valve on the instruments such as flow tube road, microscale infusion apparatus.
Background technology
When clinically carrying out infusion treatment, drainage to patient, it can often suffer from there is a situation where liquid reflux, liquid reflux endanger
Person's health easily causes irremediable malpractice.Medical check valve comes into being aiming at problems.
Current most of check valves are all that silicon chip in check valve is poured into inlet using withdrawing fluid, and inlet is blocked up
Firmly, to realize the only liquid function in reflux direction.It is certain that this structure realizes that function has the speed and pressure of withdrawing fluid
Can all liquid be made to pass through it is required that speed is too slow, Fluid pressure is small, make pipeline sepage, oozing of blood.Increase psychological burden to patient, no
Beneficial to Rehabilitation, while also increasing the clinical nursing activity of medical staff.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of Medical check valve, pass through
Changing the structure of spool makes reflux stop liquid not by withdrawing fluid speed and pressure limit.
To achieve the above object, the utility model provides following technical solution：A kind of Medical check valve, including valve casing and
The spool being set in valve casing is provided with the accommodating chamber for accommodating spool in the valve casing, and one end of the valve casing is provided with
The feed pathway being connected to the accommodating chamber, the other end are provided with the liquid outlet channel being connected to the accommodating chamber, the spool packet
Cylinder and the film for being set to cylinder one end are included, the thin film center is provided with through-hole, and it is big that the feed pathway is provided with area
In the boss of the via area, the boss is connect with the side wall of the feed pathway by interconnecting piece, and the boss with
Several flowing holes are formed between the side wall of the feed pathway.
By using above-mentioned technical proposal, under the Medical check valve non-working condition, boss supports the film of bore periphery
It rises, the elastic force of film can be such that the film of bore periphery is tightly posted on boss.It is to pass through feed pathway when check valve forward flow
Several flowing holes at place flow through liquid, and liquid enters between film and boss and jacks up film, and pass through from through-hole, to
Realize forward flow.Check valve reversely stop liquid when, since through-hole is blocked by boss, no matter reverse flow velocity and pressure it is much,
Obstructed liquid.
Preferably, the valve casing includes the feed liquor end housing being detachably connected and outlet end shell, the accommodating chamber setting
In in the outlet end shell, the boss is set in the feed liquor end housing.
By using above-mentioned technical proposal, spool is positioned in accommodating chamber and then by feed liquor end housing and outlet end
Shell is assembled to form valve casing, is convenient for the installation of spool in this way.
Preferably, the feed liquor end housing and outlet end shell grafting.
By using above-mentioned technical proposal, facilitate the dismounting of feed liquor end housing and outlet end shell.
Preferably, the feed liquor end housing and outlet end shell are threadedly coupled.
By using above-mentioned technical proposal so that the connection of feed liquor end housing and outlet end shell is more stablized.
Preferably, the feed liquor end housing outwardly protrudes to form bulge loop close to the end face of boss, the outlet end shell leans on
The end face of nearly accommodating chamber is provided with the annular groove coordinated with the bulge loop.
By using above-mentioned technical proposal, boss and annular groove cooperation can be connected feed liquor end housing and outlet end shell
It is connected together, and since boss and annular groove are ring-shaped, the cooperation of the two is more stablized.
Preferably, one end outer wall of the valve casing is provided with external screw thread.
By using above-mentioned technical proposal, it is convenient for the company of the instruments such as valve casing and infusion pipeline, drainage line, microscale infusion apparatus
It connects.
Preferably, one end outer wall of the valve casing is provided with connection ring, shape between the connection ring and the valve casing outer wall
Circularize mounting groove.
By using above-mentioned technical proposal, annular mounting groove can be in order to valve casing and infusion pipeline, drainage line, micro defeated
Note the connection of the instruments such as device.
Preferably, the inner wall of the connection ring is provided with internal thread.
By using above-mentioned technical proposal, the pipelines of the instruments such as infusion pipeline, drainage line, microscale infusion apparatus can with it is interior
Screw-thread fit connects, and connective stability is more preferable.
Preferably, the outer wall of the connection ring is provided with anti-slip part.
By using above-mentioned technical proposal, in the pipeline of the instruments such as valve casing and infusion pipeline, drainage line, microscale infusion apparatus
When threaded connection, convenient for rotation valve casing.
Preferably, the feed liquor end housing and outlet end housing junction are provided with sealing ring.
By using above-mentioned technical proposal so that the better tightness between feed liquor end housing and outlet end shell.
In conclusion the utility model has the advantages that compared with the prior art：The utility model reflux stops liquid
Not by withdrawing fluid speed and pressure limit, also, the pipeline of the instruments such as itself and infusion pipeline, drainage line, microscale infusion apparatus
Connection it is more convenient with stablize.
Description of the drawings
Fig. 1 is the front view of embodiment；
Fig. 2 is the upward view of embodiment；
Status diagram when Fig. 3 is embodiment forward flow；
Fig. 4 is status diagram when embodiment inversely stops liquid.
In figure：1, feed liquor end housing；11, external screw thread；12, flowing hole；13, feed pathway；14, boss；15, bulge loop；2、
Outlet end shell；21, connection ring；211, anti-skidding muscle；212, internal thread；22, liquid outlet channel；23, annular mounting groove；24, annular
Slot；3, spool；31, cylinder；32, film；33, through-hole；4, sealing ring.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
Embodiment：A kind of Medical check valve, referring to Fig. 1, including feed liquor end housing 1 and outlet end shell 2.It is specific internal
Structure is provided with feed pathway 13, one end of feed pathway 13 is provided with boss 14, boss 14 referring to Fig. 3 in feed liquor end housing 1
It is connect with the inner wall of feed pathway 13 by interconnecting piece, and is formed with several overcurrents between boss 14 and the side wall of feed pathway 13
Hole 12.Feed liquor end housing 1 is provided with bulge loop 15 on the end face of 14 one end of boss, is set on an end face of outlet end shell 2
It is real by bulge loop 15 and 24 grafting of annular groove to be equipped with the annular groove 24 coordinated with bulge loop 15, feed liquor end housing 1 and outlet end shell 2
It now connects, and the seal groove of annular is opened up in feed liquor end housing 1 or outlet end shell 2, it is real that sealing ring 4 is set in seal groove
The sealed connection of existing feed liquor end housing 1 and outlet end shell 2.It is threadedly coupled alternatively, bulge loop 15 can also be with annular groove 24.
One end center of annular groove 24 is provided with the receiving being connected to liquid outlet channel 22 in outlet end shell 2
Chamber, the size of accommodating chamber are more than the size of liquid outlet channel 22, spool 3 are placed in accommodating chamber.Spool 3 includes the cylinder of cylindrical shape
Body 31 and the film 32 in 31 one end of cylinder is set, through-hole 33 is provided on film 32.Outlet end shell 2 and feed liquor end housing 1
It is made of medical macromolecular materials, and spool 3 is made of using soft elastic materials such as silica gel, rubber.Wherein, film 32
Thickness is 0.1mm, and the diameter of through-hole 33 is less than the diameter of boss 14 so that the end face of boss 14 can completely enclose through-hole 33.
One end outer wall of the outlet end shell 2 far from annular groove 24 is provided with connection ring 21, connection ring 21 and outlet end shell
Annular mounting groove 23 is formed between 2 outer wall of body, the inner wall of connection ring 21 is provided with internal thread 212.Feed liquor end housing 1 is far from boss
The outer wall of 14 one end is provided with external screw thread 11, and feed liquor end housing 1 and outlet end shell 2 pass through external screw thread 11 and internal thread respectively
212, the piping connection with the instruments such as infusion pipeline, drainage line, microscale infusion apparatus.
Fig. 3 is status diagram of the liquid in check valve when forward flow, at this point, liquid enters from feed pathway 13,
Enter between boss 14 and film 32 by flowing hole 12 and jack up film 32, then, liquid is flowed out from through-hole 33, logical through going out liquid
It flows out in road 22；Fig. 4 is status diagram when liquid inversely stops liquid in check valve, when there is adverse current trend in liquid,
Liquid promotes film 32 to fit on boss 14, and boss 14 blocks the through-hole 33 on film 32, so that liquid can not
Pass through.
In addition, referring to Fig. 1, the outer wall of connection ring 21 be additionally provided with it is several be arranged along 22 axial direction of liquid outlet channel it is anti-
Sliding muscle 211.
The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of Medical check valve, including valve casing and the spool (3) that is set in valve casing, it is provided in the valve casing for accommodating
The accommodating chamber of spool (3), one end of the valve casing are provided with the feed pathway (13) being connected to the accommodating chamber, other end setting
There is the liquid outlet channel (22) being connected to the accommodating chamber, it is characterised in that：The spool (3) includes cylinder (31) and is set to cylinder
The film (32) of body (31) one end, the film (32) are provided centrally with through-hole (33), and the feed pathway (13) is provided with face
More than the boss (14) of the through-hole (33) area, the boss (14) passes through with the side wall of the feed pathway (13) to be connect product
Portion connects, and several flowing holes (12) are formed between the boss (14) and the side wall of the feed pathway (13).
2. Medical check valve according to claim 1, it is characterised in that：The valve casing includes the liquid feeding end being detachably connected
Shell (1) and outlet end shell (2), the accommodating chamber are set in the outlet end shell (2), and the boss (14) is set to
In the feed liquor end housing (1).
3. Medical check valve according to claim 2, it is characterised in that：The feed liquor end housing (1) and outlet end shell
(2) grafting.
4. Medical check valve according to claim 2, it is characterised in that：The feed liquor end housing (1) and outlet end shell
(2) it is threadedly coupled.
5. Medical check valve according to claim 3, it is characterised in that：The feed liquor end housing (1) is close to boss (14)
End face outwardly protrude to form bulge loop (15), the outlet end shell (2) is provided with and the bulge loop close to the end face of accommodating chamber
(15) annular groove (24) coordinated.
6. Medical check valve according to claim 1, it is characterised in that：One end outer wall of the valve casing is provided with external screw thread
(11)。
7. Medical check valve according to claim 1, it is characterised in that：One end outer wall of the valve casing is provided with connection ring
(21), annular mounting groove (23) is formed between the connection ring (21) and the valve casing outer wall.
8. Medical check valve according to claim 7, it is characterised in that：The inner wall of the connection ring (21) is provided with interior spiral shell
Line (212).
9. Medical check valve according to claim 8, it is characterised in that：The outer wall of the connection ring (21) is provided with anti-skidding
Portion.
10. Medical check valve according to claim 2, it is characterised in that：The feed liquor end housing (1) and outlet end shell
(2) junction is provided with sealing ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720832284.XU CN207856069U (en) | 2017-07-10 | 2017-07-10 | Medical check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720832284.XU CN207856069U (en) | 2017-07-10 | 2017-07-10 | Medical check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207856069U true CN207856069U (en) | 2018-09-14 |
Family
ID=63474117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720832284.XU Active CN207856069U (en) | 2017-07-10 | 2017-07-10 | Medical check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207856069U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110947092A (en) * | 2019-10-22 | 2020-04-03 | 浙江省北大信息技术高等研究院 | One-way valve and medical catheter with same |
-
2017
- 2017-07-10 CN CN201720832284.XU patent/CN207856069U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110947092A (en) * | 2019-10-22 | 2020-04-03 | 浙江省北大信息技术高等研究院 | One-way valve and medical catheter with same |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |