CN207445281U - A kind of infusion needleless joint - Google Patents
A kind of infusion needleless joint Download PDFInfo
- Publication number
- CN207445281U CN207445281U CN201720145165.7U CN201720145165U CN207445281U CN 207445281 U CN207445281 U CN 207445281U CN 201720145165 U CN201720145165 U CN 201720145165U CN 207445281 U CN207445281 U CN 207445281U
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- CN
- China
- Prior art keywords
- elastic capsule
- outer cover
- elastic
- capsule
- pedestal
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- 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.)
- Withdrawn - After Issue
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A kind of infusion needleless joint, including outer cover, elastic capsule and pedestal, outer cover end is rounded, cover bottom portion is tightly connected with pedestal, the middle of the base is equipped with the passage flowed through for liquid, elastic capsule is sheathed on channel outer wall, the inner wall of elastic capsule is fitted closely with passage, elastic capsule end is oval, the short-axis direction of ellipse is equipped with a draining hole, draining hole center is along the symmetrical two outwardly curves of short axle, and two curves are gradually reduced along the distance between long axis direction from draining hole center to short-axis direction, outer cover upper inner is equipped with the shoulder of limitation elastic capsule end, blocking portion coordinates with shoulder sealing；Air discharge duct is offered along passage radially opposite sides；The structure design of the utility model is reasonable, and the design of elastic capsule is both convenient for liquid by also ensuring needleless joint sealing performance and resistance bacterium performance；Elastic capsule blocking portion coordinates with the sealing of outer cover shoulder, and elastic capsule end is made to be not easy to pop up outer cover end in the case where its own resilient acts on.
Description
Technical field
The utility model is related to medical assistance instruments, and in particular to a kind of infusion needleless joint.
Background technology
With the development of venous transfusion technology, Needleless seal transfusion technology is also widely used in clinic, and needleless infusion refers to
It is to be not required to puncture a kind of instrument that can be thought infusion pipeline conveying repeatedly or extract liquid, uses no-needle transfusion connector as infusion
Passage and injection port are provided.No-needle transfusion connector is mostly complicated, cumbersome at present, while seal is poor, to patient
Bring the infected probability in infusion process.
Utility model content
The purpose of this utility model is to provide a kind of infusion needleless joint simple in structure, easily operated.
To achieve these goals, the utility model uses following scheme：
A kind of infusion needleless joint, including outer cover, elastic capsule and pedestal, the outer cover end is rounded, outer base
Portion is tightly connected with pedestal, and the middle of the base is equipped with the passage flowed through for liquid, and elastic capsule is sheathed on channel outer wall, elastic gum
The inner wall of capsule is fitted closely with passage, and elastic capsule end is oval, and minor axis length ＞ outer cover end diameters, oval is short
Direction of principal axis is equipped with a draining hole, and draining hole center is along the symmetrical two outwardly curves of short axle, and two curve edges
Distance between long axis direction is gradually reduced from draining hole center to short-axis direction, and outer cover upper inner is equipped with limitation elastic capsule end
The shoulder in portion, elastic capsule blocking portion section are round table-like, and the blocking portion is small close to the cross section of elastic capsule end one side, resistance
Stopper coordinates with shoulder sealing, and outer cover end is equipped with connecting portion, and for being connected with infusion connector, pedestal is equipped with connecting portion, is used for
It is connected with remaining needle.
Air discharge duct, the sky between air discharge duct one end connection elastic capsule outer wall and outer cover inner wall are offered along passage radially opposite sides
Chamber, other end connection are extraneous.
Anti-slip part is equipped with outside the pedestal lower end.
The center overlapping of axles of the base centerline, channel center's axis and elastic capsule.
In the elastic capsule, lower part to be hollow, outer wall and inner wall are concave-convex alternate corrugated.
The elastic capsule material is elastic material.
By above technical scheme, the beneficial effects of the utility model are：Needleless joint structure provided by the utility model
Design is reasonable, and low-profile is easy to use, and the design of elastic capsule is both convenient for liquid by also ensuring that needleless joint seals
Performance and resistance bacterium performance；The rounded ends of the elliptical head insertion outer cover of elastic capsule, oval long axis direction are squeezed
During pressure, draining hole is larger along long axis direction deflection, and elastic capsule elliptical head can be made to reach good sealing effect, elasticity
Capsule blocking portion coordinates with the sealing of outer cover shoulder, it is ensured that the leakproofness of liquid transport system, while also make elastic capsule end
It is not easy to pop up outer cover end in the case where its own resilient acts on, improves the qualification rate in production process.During infusion, needleless joint
Infusion apparatus or syringe adapter are accessed in outer cover end, elastic capsule end be also extruded as outer cover end is squeezed and the bottom of to
Seat direction is slided, and gap is opened, and joint is closed, avoids being subject to extraneous germ contamination, elastic capsule connects with the passage on pedestal
Logical to infuse, after recalling infusion connector after the completion of infusion, elastic capsule rebound reset is simultaneously closed.
Description of the drawings
Fig. 1 is the utility model section view.
Fig. 2 is the structure diagram of the utility model.
Fig. 3 is the schematic diagram that the utility model is connected with infusion connector.
Fig. 4 is the utility model pedestal sectional view.
Fig. 5 is elastic capsule sectional view.
Specific embodiment
As shown in attached drawing 1-5, a kind of infusion needleless joint, including outer cover 2, elastic capsule 3 and pedestal 1, outer cover end
21 is rounded, and 2 bottom of outer cover is tightly connected with pedestal 1, and 1 middle part of pedestal is equipped with the passage 1b flowed through for liquid, 3 sets of elastic capsule
On passage 1b outer walls, elastic capsule（3）Inner wall and passage（1b ）It fitting closely, elastic capsule 3 is movable along passage 1b,
Liquid is made to be only capable of flowing in remaining needle along passage 1b, prevents medicine liquid leakage；Elastic capsule end 3a is oval, minor axis length ＞
Outer cover end diameter, therefore elastic capsule end 3a carries out pressure cooperation with outer cover end 21, is set on oval short-axis direction
There is a draining hole, as shown in the 3a in attached drawing 5, draining hole center is along the symmetrical two outwardly curves of short axle, and two
Curve is gradually reduced along the distance between long axis direction from draining hole center to short-axis direction, is subject to when on oval long axis direction
During the extruding of relative direction, deflection is big on long axis direction, therefore draining hole deflection on long axis direction is also big, finally causes
Draining hole tight closure on short-axis direction；Outer cover（2）Upper inner is equipped with limitation elastic capsule end（3a）Shoulder（4）,
Elastic capsule（3）Blocking portion（3b）Section is round table-like, the blocking portion（3b）It is small close to the cross section of elastic capsule end one side,
Blocking portion（3b）With shoulder（4）Sealing cooperation, when needleless joint is not used, elastic capsule is in compressive state in outer cover, and
Elastic capsule has certain elasticity, therefore two inner wall 3b on the left of elastic capsule end are respectively extended out to and are pasted with outer cover inner wall
It closes, prevents that elastic capsule end 3a is squeezed out outside outer cover end under the action of its own resilient, scraps needleless joint；Outer cover end
Portion is equipped with connecting portion, and for being connected with infusion connector 5, pedestal 1 is equipped with connecting portion, is connected for remaining needle.
Due to 3 blocking portion 3b of elastic capsule and 4 close fit of shoulder, elastic capsule and outer cover are confined space, therefore
Air discharge duct 1a is offered along passage 1b radially opposite sides, air discharge duct 1a one end connects the sky between 2 inner wall of 3 outer wall of elastic capsule and outer cover
Chamber, other end connection are extraneous, and when infusion discharges the air in cavity, reduces the resistance that elastic capsule 3 compresses, after infusion
For alleviating negative pressure in space, accelerate the rebound reset speed of elastic capsule after the completion of infusion, it is ensured that equipment safety reliability.
Anti-slip part is equipped with outside 1 lower end of pedestal, which can be that skid resistance strip or antiskid thread connect with remaining needle
It prevents rubber sleeve from coming off when connecing, improves the security of operation.
The center overlapping of axles of 1 center line of pedestal, 5 central shaft of passage and elastic capsule 3, elastic capsule 3 are mounted on passage 5
On, when its end crevice is opened, elastic capsule 3 is connected with infusion channel 5, the not water clock when conveying liquid.
In elastic capsule, lower part to be hollow, outer wall and inner wall are concave-convex alternate corrugated, and corrugated is easier to elasticity
The contraction of capsule.
3 material of elastic capsule is elastic material, and elastic capsule 3 has high-elastic using the other elastic material of medical grade
Property feature, the contraction and rebound of elastic capsule of being more convenient for, and meanwhile it is also very safe non-hazardous to patient health.
The operation principle of the utility model is：
As shown in Figure 2, before infusion starts, elastic capsule end carries out pressure cooperation, elastic capsule end with outer cover end
The draining hole center in portion along the symmetrical two outwardly curves of short axle, and two curves along the distance between long axis direction from
Draining hole center is gradually reduced to short-axis direction, and long axis direction is squeezed be subject to relative direction, the deflection that long axis direction occurs
Greatly, draining hole is relatively narrow in the direction, so, above-mentioned deformed part is enough the space for occupying draining hole, makes draining hole tight closure；
When needleless joint outer cover end is connected to infusion apparatus or syringe adapter, as shown in attached drawing 2,3, outer cover end is oppressed, bullet
Property capsule end slided under the squeezing action being subject to pedestal direction, since the design of air discharge duct is by elastic capsule outer wall and outer
Air discharge between lid inner wall in sealing cavity, the resistance smaller for compressing waveform elastic capsule；Such as attached drawing 5, elastic capsule
The constraint of outer cover end is broken away from end, and the draining hole on short-axis direction opens at this time, is connected with infusion channel, starts work of infusing
To make, whole process elastic capsule good seal prevents bacterium from entering infusion channel, ensures the safety of patient, while again due to bullet
Property capsule be easier to shrink for waveform；Elastic capsule is silica gel material, has high resiliency, therefore infuses and terminate to pull out infusion
When device, syringe, elastic capsule springs back to outer cover end, minor axis length ＞ outer cover end diameters, therefore elastic capsule end is ellipse
Circle long axis direction can be squeezed again, be closed draining hole again.
Above-described is only the preferred embodiment of the utility model, it is noted that for those skilled in the art
For, under the premise of the utility model general idea is not departed from, several changes and improvements can also be made, these should also be considered as
The scope of protection of the utility model.
Claims (6)
1. a kind of infusion needleless joint, including outer cover（2）, elastic capsule（3）And pedestal（1）, which is characterized in that the outer cover
End is rounded, outer cover（2）Bottom and pedestal（1）It is tightly connected, pedestal（1）Middle part is equipped with the passage flowed through for liquid（1b）,
Elastic capsule（3）It is sheathed on passage（1b ）On outer wall, elastic capsule（3）Inner wall and passage（1b ）It fits closely, elastic gum
Capsule end（3a）Oval, minor axis length ＞ outer cover end diameters, oval short-axis direction is equipped with a draining hole, drainage
Mouthful center along the symmetrical two outwardly curves of short axle, and two curves along the distance between long axis direction from draining hole
The heart is gradually reduced to short-axis direction, outer cover（2）Upper inner is equipped with limitation elastic capsule end（3a）Shoulder（4）, elastic gum
Capsule（3）Blocking portion（3b）Section is round table-like, the blocking portion（3b）Small, the blocking portion close to the cross section of elastic capsule end one side
（3b）With shoulder（4）Sealing cooperation, outer cover end are equipped with connecting portion, are used for and infusion connector（5）Connection, pedestal（1）Equipped with even
Socket part, for being connected with remaining needle.
2. infusion needleless joint as described in claim 1, which is characterized in that along passage（1b）Radially opposite sides offer exhaust
Slot（1a）, air discharge duct（1a）One end connects elastic capsule（3）Outer wall and outer cover（2）Cavity, other end connection between inner wall is extraneous.
A kind of 3. infusion needleless joint as described in claim 1, which is characterized in that the pedestal（1）It is equipped with outside lower end
Anti-slip part.
A kind of 4. infusion needleless joint as described in claim 1, which is characterized in that the pedestal（1）Center line, passage
（1b）Central shaft and elastic capsule（3）Center overlapping of axles.
A kind of 5. infusion needleless joint as described in claim 1, which is characterized in that the elastic capsule（3）In, lower part be
Hollow, outer wall and inner wall are concave-convex alternate corrugated.
A kind of 6. infusion needleless joint as described in claim 1, which is characterized in that the elastic capsule（3）Material is bullet
Property material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720145165.7U CN207445281U (en) | 2017-02-17 | 2017-02-17 | A kind of infusion needleless joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720145165.7U CN207445281U (en) | 2017-02-17 | 2017-02-17 | A kind of infusion needleless joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207445281U true CN207445281U (en) | 2018-06-05 |
Family
ID=62246676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720145165.7U Withdrawn - After Issue CN207445281U (en) | 2017-02-17 | 2017-02-17 | A kind of infusion needleless joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207445281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730119A (en) * | 2017-02-17 | 2017-05-31 | 河南曙光汇知康生物科技股份有限公司 | A kind of transfusion needleless joint |
-
2017
- 2017-02-17 CN CN201720145165.7U patent/CN207445281U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730119A (en) * | 2017-02-17 | 2017-05-31 | 河南曙光汇知康生物科技股份有限公司 | A kind of transfusion needleless joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180605 Effective date of abandoning: 20230502 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180605 Effective date of abandoning: 20230502 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |