CN205832284U - A kind of positive pressure needle-free infusion connector - Google Patents
A kind of positive pressure needle-free infusion connector Download PDFInfo
- Publication number
- CN205832284U CN205832284U CN201620437929.5U CN201620437929U CN205832284U CN 205832284 U CN205832284 U CN 205832284U CN 201620437929 U CN201620437929 U CN 201620437929U CN 205832284 U CN205832284 U CN 205832284U
- Authority
- CN
- China
- Prior art keywords
- elastomer
- lower cover
- cover
- positive pressure
- infusion connector
- 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.)
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Links
- 238000001802 infusion Methods 0.000 title claims abstract description 20
- 229920001971 elastomer Polymers 0.000 claims abstract description 46
- 239000000806 elastomer Substances 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000003814 drug Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 208000031481 Pathologic Constriction Diseases 0.000 claims 1
- 210000001215 vagina Anatomy 0.000 claims 1
- 239000008280 blood Substances 0.000 abstract description 9
- 210000004369 blood Anatomy 0.000 abstract description 9
- 229940079593 drug Drugs 0.000 abstract description 5
- 238000010992 reflux Methods 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000023555 blood coagulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
This utility model relates to technical field of medical instruments, particularly relate to a kind of positive pressure needle-free infusion connector, including upper cover, elastomer, lower cover, described elastomer is arranged at upper cover with lower cover by being welded to connect in the cavity of formation, described elastomer upper end diameter is less than lower end diameter, inside has elastomer inner chamber, upper end has gap, elastomer upper end compresses with upper cover interference and seals, elastomer lower end packs into boss the interference compression sealing of lower cover, described lower cover boss is provided with the through hole that elastomer inner chamber can be made to connect with ambient atmosphere, lower cover upper end is communicated with the square groove of liquid outlet.The malleation amount of this utility model joint is big, can effectively prevent needle tubing blood back, solves the blood reflux problem that traditional needle-free infusion connector exists, and reduces thrombosed risk, improves utilization ratio of drug.
Description
Technical field
This utility model relates to technical field of medical instruments, is specifically related to a kind of positive pressure needle-free infusion connector.
Background technology
At present, in medicinal, carry out transfusing blood by venipuncture, infuse or drug injection is in treatment patient procedure
Modal method.But, existing medical personnel are carrying out the treatment of venipuncture blood transfusion, transfusion or drug injection to patient
In, usually intravenous needle, transfusion needle puncture, owing to various disease event are different or limited by the condition of patient own, it may appear that
Prolonged and repeated repeatedly puncture is needed to infuse or to add injecting medical liquid situation in liquid-transport pipe-line in single is infused the most temporarily,
Thus bring unnecessary misery to patient.In prior art, remaining needle has been used widely, but when transfusion end is pulled up
During syringe adapter, owing to the effect of negative pressure can make blood reflux, if blood coagulation, the blocking of remaining needle can be caused, and nothing
Method is continuing with.
The utility model of Application No. CN201020254430.3 discloses a kind of Needleless dosing positive pressure connector, by inside
Empty upper cover, plinth and plug are constituted.Although it has positive pressure infuser effect, but its plug contacts instability with plinth,
Plug easily offsets and causes liquid medicine flow the most smooth.
Utility model content
The purpose of this utility model is to provide a kind of positive pressure needle-free infusion connector, it is possible to realize liquid one-way flowing, can
Being prevented effectively from the pollution of antibacterial, dust, malleation amount is big, can effectively prevent needle tubing blood back, improves utilization ratio of drug.
For achieving the above object, the technical solution adopted in the utility model is: a kind of positive pressure needle-free infusion connector, its feature
Being, including upper cover, elastomer, lower cover, described elastomer is arranged at upper cover and is connected with lower cover in the cavity formed, described upper cover
Inner side is provided with liquid medicine flow groove, and described elastomer upper end diameter has elastomer inner chamber, upper side less than lower end diameter, inside
Having gap, elastomer upper end seals with upper cover；Described lower cover has boss, and described elastomer lower end packs into the boss of lower cover also
Sealing, be provided with the through hole that elastomer inner chamber can be made to connect with ambient atmosphere inside the boss of described lower cover, lower cover upper end is provided with even
The square groove of logical liquid outlet；Being provided with external screw thread outside described upper cover upper end, lower cover lower end is provided with Rule cone joint；
Further, it is provided with, outside described upper cover, the strip projected parts paralleled to the axis；
Further, described upper cover and lower cover are by being welded to connect；
Further, described elastomer is silica gel or quality of rubber materials；
Further, described elastomer upper end and upper cover are that interference compresses sealing, described elastomer lower end and lower cover boss
Compress for interference and seal；
Further, shoulder, described shoulder is had to be in close contact with upper cover between described elastomer top and bottom.
This utility model method has the advantage that
The malleation amount of this utility model joint is big, can effectively prevent needle tubing blood back, solves traditional needle-free infusion connector and deposits
Blood reflux problem, reduce thrombosed risk, improve utilization ratio of drug.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of anti-reverse streaming no-needle transfusion joint of the present utility model；
Fig. 2 is the external structure schematic diagram of valve for preventing reverse-flow of the present utility model.
Detailed description of the invention
Following example are used for illustrating this utility model, but are not limited to scope of the present utility model.
Embodiment 1
A kind of positive pressure needle-free infusion connector, including upper cover 1, elastomer 2, lower cover 3, described elastomer 2 be arranged at upper cover 1 with
Lower cover 3 connects in the cavity formed, and is provided with two liquid medicine flow grooves 5 inside described upper cover 1, and described elastomer 2 upper end diameter is little
In lower end diameter, inside has elastomer inner chamber, upper side has eccentric gap 4, between described elastomer 2 top and bottom
Having shoulder, described shoulder to be in close contact with upper cover 1, elastomer 2 upper end compresses with upper cover 1 interference and seals；Described lower cover 3 has convex
Platform, described elastomer 2 lower end packs into boss the interference compression sealing of lower cover 3, is provided with and can make bullet inside the boss of described lower cover 3
The ventilative through hole 7 that gonosome inner chamber connects with ambient atmosphere, lower cover 3 upper end is communicated with the square groove 6 of liquid outlet；Described upper cover 1
Being provided with external screw thread outside upper end, lower cover 3 lower end is provided with Rule cone joint；It is provided with outside described upper cover 1 and to parallel to the axis
Strip projected parts, it is possible to play anti-skidding effect；Described upper cover 1 and lower cover 3, by being welded to connect, have more preferable airtight watertightness
Energy；Described elastomer is silica gel material.
During use, above-mentioned anti-reverse streaming no-needle transfusion joint in its natural state, the upper end of described elastomer and upper cover
Upper end fits tightly, and the shoulder of described elastomer fits tightly with upper cover, when infusion connector extruding elastomer upper end, and elastomer
Deform upon so that the square groove connection of gap, the liquid medicine flow groove of upper cover, lower cover connection liquid outlet forms infusion channel, with
Time due to elastomer lower end the most chimeric with the boss of lower cover and make elastomer still not transposition in the case of deforming upon
Move, do not interfere with the unimpeded of infusion channel.Infusion connector is extracted, owing to the ventilative through hole of lower cover makes elasticity after transfusion terminates
Intracoelomic cavity and atmosphere, therefore elastomer can restore to the original state easily, and the most eccentric gap can extrude air generation one and bear
Pressure, makes the liquid in infusion channel push ahead automatically, thus avoids blood to form thrombosis in being back to remaining needle, and can save
Save medicinal liquid, reduce medicinal liquid residual in joint.
Although, the most with general explanation and specific embodiment, this utility model is made detailed description, but
On the basis of this utility model, can make some modifications or improvements it, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from this utility model spirit, belong to this utility model and want
Seek the scope of protection.
Claims (6)
1. a positive pressure needle-free infusion connector, it is characterised in that include that upper cover, elastomer, lower cover, described elastomer are arranged at
Lid is connected with lower cover in the cavity formed, and is provided with liquid medicine flow groove inside described upper cover, and described elastomer upper end diameter is less than down
Hold diameter, inside has elastomer inner chamber, upper side has gap, and elastomer upper end seals with upper cover；Described lower cover has
Boss, described elastomer lower end packs into the boss of lower cover and seals, and is provided with and can make elastomer inner chamber inside the boss of described lower cover
The through hole connected with ambient atmosphere, lower cover upper end is communicated with the square groove of liquid outlet；It is provided with outer spiral shell outside described upper cover upper end
Stricture of vagina, lower cover lower end is provided with Rule cone joint.
2. a kind of positive pressure needle-free infusion connector as claimed in claim 1, it is characterised in that be provided with parallel outside described upper cover
The strip projected parts of axis.
3. a kind of positive pressure needle-free infusion connector as claimed in claim 1, it is characterised in that described upper cover passes through to weld with lower cover
Connect.
4. a kind of positive pressure needle-free infusion connector as claimed in claim 1, it is characterised in that described elastomer is silica gel or rubber
Material.
5. a kind of positive pressure needle-free infusion connector as claimed in claim 1, it is characterised in that described elastomer upper end with upper cover is
Interference compresses and seals, and described elastomer lower end and lower cover boss are that interference compresses sealing.
6. positive pressure needle-free infusion connector as claimed in claim 1 a kind of, it is characterised in that described elastomer top and bottom it
Between have a shoulder, described shoulder is in close contact with upper cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620437929.5U CN205832284U (en) | 2016-05-12 | 2016-05-12 | A kind of positive pressure needle-free infusion connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620437929.5U CN205832284U (en) | 2016-05-12 | 2016-05-12 | A kind of positive pressure needle-free infusion connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205832284U true CN205832284U (en) | 2016-12-28 |
Family
ID=57627816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620437929.5U Active CN205832284U (en) | 2016-05-12 | 2016-05-12 | A kind of positive pressure needle-free infusion connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205832284U (en) |
Cited By (4)
| 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 |
| CN108837224A (en) * | 2018-07-16 | 2018-11-20 | 杭州光启医疗科技发展有限公司 | The medical fluid delivery instrument of anti-backflow |
| CN113558974A (en) * | 2020-12-07 | 2021-10-29 | 刘云虎 | A positive and negative pressure needleless rubber valve joint |
| CN116585564A (en) * | 2023-07-17 | 2023-08-15 | 四川天府南格尔生物医学有限公司 | Disposable blood transfusion device and use method thereof |
-
2016
- 2016-05-12 CN CN201620437929.5U patent/CN205832284U/en active Active
Cited By (7)
| 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 |
| CN106730119B (en) * | 2017-02-17 | 2023-05-02 | 河南曙光汇知康生物科技股份有限公司 | Needleless connector for transfusion |
| CN108837224A (en) * | 2018-07-16 | 2018-11-20 | 杭州光启医疗科技发展有限公司 | The medical fluid delivery instrument of anti-backflow |
| CN108837224B (en) * | 2018-07-16 | 2021-02-02 | 青岛市精神卫生中心（青岛市第七人民医院、青岛市心理咨询中心） | Liquid medicine delivery device capable of preventing backflow |
| CN113558974A (en) * | 2020-12-07 | 2021-10-29 | 刘云虎 | A positive and negative pressure needleless rubber valve joint |
| CN116585564A (en) * | 2023-07-17 | 2023-08-15 | 四川天府南格尔生物医学有限公司 | Disposable blood transfusion device and use method thereof |
| CN116585564B (en) * | 2023-07-17 | 2023-09-19 | 四川天府南格尔生物医学有限公司 | Disposable blood transfusion device and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |