CN203898860U - Injection syringe with needle plug capable of exhausting air automatically - Google Patents
Injection syringe with needle plug capable of exhausting air automatically Download PDFInfo
- Publication number
- CN203898860U CN203898860U CN201420303362.3U CN201420303362U CN203898860U CN 203898860 U CN203898860 U CN 203898860U CN 201420303362 U CN201420303362 U CN 201420303362U CN 203898860 U CN203898860 U CN 203898860U
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- CN
- China
- Prior art keywords
- outer sleeve
- sleeve body
- push rod
- exhaust duct
- air
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Abstract
The utility model relates to an injection syringe structure, in particular to an injection syringe with a needle plug capable of exhausting air automatically, and belongs to the technical field of medical instruments. According to the technical scheme, the injection syringe with the needle plug capable of exhausting air automatically comprises an outer sleeve and a push rod, wherein the push rod is arranged in the outer sleeve and can move in the outer sleeve, and one end of the push rod is provided with a piston. The injection syringe with the needle plug capable of exhausting air automatically is characterized in that an air exhaust channel is formed in the piston and communicated with a gap reserved between the outer sleeve and the push rod, a water blocking and air permeable membrane is arranged at the end portion of one end of the air exhaust channel covered with the water blocking and air permeable membrane, and an air exhaust check valve is arranged in the air exhaust channel. The injection syringe with the needle plug capable of exhausting air automatically is simple and compact in structure, convenient to use, safe and reliable, air in liquid medicine can be exhausted automatically, and the procedure that air in the liquid medicine must be exhausted before the liquid medicine in the injection syringe is injected is simplified.
Description
Technical field
This utility model relates to a kind of syringe construction, and especially a kind of pin plug, from aerofluxus syringe, belongs to the technical field of medical apparatus and instruments.
Background technology
At present, during the perfusion of conventional various types injector for medical purpose machine preliminary filling, drawing excessively during because of hypoperfusion or by artificial suction medicinal liquid, is in syringe, to occur that gas is remaining, must execution Exhaust Gas program before using, otherwise, exist the risk of gas inject human body.Must be slow and careful during Exhaust Gas, otherwise often because overexertion makes part medicinal liquid, be discharged from, waste or environmental pollution caused.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of pin plug from aerofluxus syringe, and it is simple and compact for structure, can realize air in medicinal liquid from aerofluxus, simplify the front flow process that must discharge gas in medicinal liquid of syringe injection liquid, easy to use, safe and reliable.
The technical scheme providing according to this utility model, described pin plug, from aerofluxus syringe, comprises outer sleeve body and is installed in described outer sleeve body and the push rod that can move in described outer sleeve body; One end of push rod is provided with piston body and it is characterized in that: in described piston body, be provided with exhaust duct, described exhaust duct is connected with the gap between push rod with outer sleeve body, and the end, one end of exhaust duct is provided with the ventilated membrane that blocks water, described in the ventilated membrane that blocks water cover exhaust duct; In described exhaust duct, be provided with exhaust check valve.
The end that described push rod is positioned at outer sleeve body is provided with solid plug ring, and the end of push rod is provided with piston body by solid plug ring, and described piston body mates close contact with the inwall of outer sleeve body.
The end, one end of described outer sleeve body is provided with needle stand, and utilizes needle stand that needle tubing is installed.
The end of described outer sleeve body is provided with locating piece, and described locating piece and needle stand lay respectively at the two ends of outer sleeve body.
In described piston body, be provided with a plurality of exhaust ducts, described exhaust duct is distributed in the outer ring in piston body.Described exhaust duct is symmetrically distributed in the outer ring in piston body.
Advantage of the present utility model: by being arranged on a plurality of exhaust ducts in piston body, its contiguous needle tubing one side is provided with the ventilated membrane that blocks water, and an other side is provided with exhaust check valve.When extracting medicinal liquid, the effect of exhaust check valve makes gas by exhaust duct, do not entered the drug storage position of outer sleeve body, and medicinal liquid is entered in outer sleeve body by needle tubing; Inevitably there is a small amount of gas to enter outer sleeve body through needle tubing needle stand, during injection, in medicinal liquid, gas is discharged outer sleeve body via exhaust duct, medicinal liquid is retained in outer sleeve body by the ventilated membrane that blocks water, simple and compact for structure, can realize air in medicinal liquid from aerofluxus, simplify the flow process that must discharge gas in medicinal liquid before syringe injection liquid, easy to use, safe and reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of this utility model piston body.
Fig. 3 is the right view of Fig. 2.
Description of reference numerals: the solid plug ring of 1-outer sleeve body, 2-push rod, 3-locating piece, 4-exhaust duct, 5-exhaust check valve, 6-piston body, 7-, 8-block water ventilated membrane, 9-needle stand and 10-needle tubing.
The specific embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, Figure 2 and Figure 3: in order to realize air in medicinal liquid from aerofluxus, simplify Exhaust Gas flow process before syringe injection liquid, this utility model comprises outer sleeve body 1 and is installed in described outer sleeve body 1 and can be at the push rod 2 of described outer sleeve body 1 interior movement; One end that described push rod 2 is positioned at outer sleeve body 1 arranges piston body 6, is provided with exhaust duct 4 in piston body 6, and the end, one end of exhaust duct 4 is provided with the ventilated membrane 8 that blocks water, described in the ventilated membrane 8 that blocks water cover on exhaust duct 4; Described exhaust duct 4 is provided with exhaust check valve 5.
Particularly, push rod 2 is in outer sleeve body 1.Exhaust duct 4 is positioned at the outer regions of piston body 6, and exhaust duct 4 connects piston body 6, by exhaust duct 4, the drug storage portion in outer sleeve body 1 can be connected with the gap between push rod 2 with outer sleeve body 1.In the specific implementation, the outer ring that exhaust duct 4 is distributed in piston body 6 is symmetrical, because outer sleeve body 1 forms one end of drug storage portion with the inclination of certain angle, in medicinal liquid gas because buoyancy is positioned at upper limb, no matter any angle all can touch exhaust duct 4, thereby can conveniently by exhaust duct 4, discharge.One end of outer sleeve body 1 is provided with needle stand 9, the end of outer sleeve body 1 is provided with needle tubing 10 by needle stand 9, the drug storage portion of outer sleeve body 1 interior formation is arranged on one end of the interior contiguous needle stand 9 of outer sleeve body 1 by the lumen area of piston body 6, needle stand 9 formation, and medicinal liquid can stop or suck drug storage portion.
The ventilated membrane 8 that blocks water is positioned at the end, one end of the contiguous needle tubing 10 of exhaust duct 4 and needle stand 9, and exhaust check valve 5 is positioned at the other end of exhaust duct 4, and exhaust duct 4 can contact with the medicinal liquid in drug storage portion by the ventilated membrane 8 that blocks water.Further, 5 permissions of exhaust check valve enter the Bas Discharged of exhaust duct 4 by the ventilated membrane 8 that blocks water, the air entering in exhaust duct 4 by the ventilated membrane 8 that blocks water enters the gap between outer sleeve body 1 and push rod 2 by exhaust check valve 5, and be positioned at outer sleeve body 1, cannot enter exhaust duct 4 by exhaust check valve 5 with the air in push rod 2 gaps.
When aspiration medicinal liquid, due to the block water one-way sealing effect of ventilated membrane 8 of 5 pairs of exhaust check valves, gas can not enter the drug storage portion in outer sleeve body 1 through exhaust check valve 5 and the ventilated membrane 8 that blocks water, and medicinal liquid and a small amount of gas enter in outer sleeve body 1 via needle tubing 10 and needle stand 9.
During injection, promote push rod 2 when the interior motion of outer sleeve body 1, medicinal liquid pressure is greater than atmospheric pressure, gas in medicinal liquid arrives blocking water during ventilated membrane 8 region of piston body 6 tops, exhaust check valve 5 is in open state, block water ventilated membrane 8 for open state, utilize the trafficability characteristic of the 8 pairs of air of ventilated membrane that block water, the air in outer sleeve body 1 inner liquid medicine can be discharged outside outer sleeve body 1 by block water ventilated membrane 8 and exhaust check valve 5; Utilize the block of the 8 pairs of water of ventilated membrane that block water, outer sleeve body 1 inner liquid medicine can not flow out by block water ventilated membrane 8 and exhaust check valve 5 simultaneously.
The end that described push rod 2 is positioned at outer sleeve body 1 is provided with solid plug ring 7, and the end of push rod 2 is provided with piston body 6 by solid plug ring 7, and described piston body 6 touches with the inwall close proximity of outer sleeve body 1.The end of push rod 2 is provided with piston body 6, the inwall close contact of the outer wall of piston body 6 and outer sleeve body 1, can not affect again the promotion effect of push rod 2 in outer sleeve body 1, utilize the sealing between piston body 6 and outer sleeve body 1, can realize the sealing of the medicinal liquid in outer sleeve body 1 and storage simultaneously.A plurality of exhaust ducts 4 are set piston body 6 is interior, the ventilated membrane 8 that blocks water can be supported on by the supporting network in exhaust duct 6 on piston body 6, the ventilated membrane 8 that blocks water can also be arranged in piston body 6, as long as the ventilated membrane 8 that can guarantee to block water covers the degree of fixation of exhaust duct 4 ends.
The end of described outer sleeve body 1 is provided with locating piece 3, and described locating piece 3 and needle stand 9 lay respectively at the two ends of outer sleeve body 1.Locating piece 3 is positioned at the end of outer sleeve body 1, and locating piece 3 distributes along the outer of outer sleeve body 1, by locating piece 3, can realize easily the push-and-pull of push rod 2 in outer sleeve body 1.Further, the end, one end that outer sleeve body 1 correspondence arranges needle stand 9 can arrange the arc that is indent, and the arc of described indent is corresponding with the arc of the evagination of piston body 6, can conveniently the medicinal liquid in outer sleeve body 1 be released as much as possible.
Syringe of the present utility model not only can be for ordinary syringe, also can be for prefilled syringe, prefilled syringe only need be by the pre-fill of medicinal liquid the drug storage portion in outer sleeve body 1, the discharging operation of the air in pre-liquid drug is identical, repeats no more herein.
This utility model be take the piston body 6 kernel of section a plurality of exhaust ducts 4 symmetrical as the center of circle in piston body 6 outer rims, and the ventilated membrane 8 that blocks water covers the end of exhaust duct 4, at the interior exhaust check valve 5 that arranges of exhaust duct 4.During injection liquid, the air in outer sleeve body 1 inner liquid medicine can be discharged by exhaust check valve 5 after entering exhaust duct 4 by the ventilated membrane 8 that blocks water smoothly; And while extracting medicinal liquid, due to the sealing function of exhaust check valve 5, gas can not be entered in outer sleeve body 1 by the ventilated membrane 8 that blocks water.This utility model is simple and compact for structure, easy to use, safe and reliable.
Claims (6)
1. pin plug, from an aerofluxus syringe, comprises outer sleeve body (1) and is installed in described outer sleeve body (1) and the push rod (2) that can move in described outer sleeve body (1); One end of push rod (2) is provided with piston body (6) and it is characterized in that: in described piston body (6), be provided with exhaust duct (4), described exhaust duct (4) is connected with the gap between push rod (2) with outer sleeve body (1), the end, one end of exhaust duct (4) is provided with the ventilated membrane that blocks water (8), described in the ventilated membrane (8) that blocks water cover exhaust duct (4); In described exhaust duct (4), be provided with exhaust check valve (5).
2. pin plug according to claim 1 is from aerofluxus syringe, it is characterized in that: the end that described push rod (2) is positioned at outer sleeve body (1) is provided with solid plug ring (7), the end of push rod (2) is provided with piston body (6) by solid plug ring (7), and described piston body (6) mates close contact with the inwall of outer sleeve body (1).
3. pin plug according to claim 1, from aerofluxus syringe, is characterized in that: the end, one end of described outer sleeve body (1) is provided with needle stand (9), and utilizes needle stand (9) that needle tubing (10) is installed.
4. pin plug according to claim 3, from aerofluxus syringe, is characterized in that: the end of described outer sleeve body (1) is provided with locating piece (3), and described locating piece (3) and needle stand (9) lay respectively at the two ends of outer sleeve body (1).
5. pin plug according to claim 1, from aerofluxus syringe, is characterized in that: in described piston body (6), be provided with a plurality of exhaust ducts (4), described exhaust duct (4) is distributed in the outer ring in piston body (6).
6. pin plug according to claim 5, from aerofluxus syringe, is characterized in that: described exhaust duct (4) is symmetrically distributed in the outer ring in piston body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420303362.3U CN203898860U (en) | 2014-06-09 | 2014-06-09 | Injection syringe with needle plug capable of exhausting air automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420303362.3U CN203898860U (en) | 2014-06-09 | 2014-06-09 | Injection syringe with needle plug capable of exhausting air automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203898860U true CN203898860U (en) | 2014-10-29 |
Family
ID=51773156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420303362.3U Expired - Fee Related CN203898860U (en) | 2014-06-09 | 2014-06-09 | Injection syringe with needle plug capable of exhausting air automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203898860U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178238A (en) * | 2016-08-08 | 2016-12-07 | 中山市美捷时包装制品有限公司 | A kind of nasal cavity inbalation administration device |
| CN106362250A (en) * | 2016-09-18 | 2017-02-01 | 电子科技大学 | Minitype array injection syringe |
| CN108236122A (en) * | 2016-12-24 | 2018-07-03 | 鸿富锦精密工业（深圳）有限公司 | Injection device |
| CN113018589A (en) * | 2021-02-06 | 2021-06-25 | 焦作市妇幼保健院(焦作市妇女儿童医院) | Puncture-proof disposable syringe |
-
2014
- 2014-06-09 CN CN201420303362.3U patent/CN203898860U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178238A (en) * | 2016-08-08 | 2016-12-07 | 中山市美捷时包装制品有限公司 | A kind of nasal cavity inbalation administration device |
| CN106362250A (en) * | 2016-09-18 | 2017-02-01 | 电子科技大学 | Minitype array injection syringe |
| CN106362250B (en) * | 2016-09-18 | 2021-03-05 | 电子科技大学 | Micro-array injector |
| CN108236122A (en) * | 2016-12-24 | 2018-07-03 | 鸿富锦精密工业（深圳）有限公司 | Injection device |
| CN113018589A (en) * | 2021-02-06 | 2021-06-25 | 焦作市妇幼保健院(焦作市妇女儿童医院) | Puncture-proof disposable syringe |
| CN113018589B (en) * | 2021-02-06 | 2024-02-06 | 焦作市妇幼保健院(焦作市妇女儿童医院) | Disposable injector for preventing puncture |
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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 |
Granted publication date: 20141029 Termination date: 20150609 |
|
| EXPY | Termination of patent right or utility model |