CN203898853U - Vacuum type safety syringe - Google Patents
Vacuum type safety syringe Download PDFInfo
- Publication number
- CN203898853U CN203898853U CN201420313436.1U CN201420313436U CN203898853U CN 203898853 U CN203898853 U CN 203898853U CN 201420313436 U CN201420313436 U CN 201420313436U CN 203898853 U CN203898853 U CN 203898853U
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- CN
- China
- Prior art keywords
- core
- pull bar
- bar
- core bar
- needle
- 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 - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a vacuum type safety syringe. The vacuum type safety syringe comprises an outer cover, a needle base, a core rod and a pull rod mechanism. The front end of the needle base is connected with a needle tubing, the needle base is provided with a rear end opening, and a friction ring is arranged at the rear end of the needle base. The core rod is arranged in the outer cover. The pull rod mechanism is arranged in the core rod and comprises a pull rod core and a pull rod. The vacuum type safety syringe has the advantages that a user can make a needle sucked into the safety needle tubing smoothly through enough low pressure generated by the pull rod mechanism, and the user can be prevented from being exposed in infection risks generated by manually recycling the needle; in addition, it can be effectively avoided that the needle cannot be sucked into the needle tubing smoothly due to insufficient suction after too long storage time.
Description
Technical field
This utility model relates to a kind of medical syringe tool, relates in particular to a kind of vacuum type safety injector.
Background technology
Fig. 1 is the structural representation of existing syringe 10.This syringe 10 comprises: a urceolus 11, a push rod 12 and needle assembly 13.Needle assembly 13 is fixed on the front end of urceolus 11 by screw thread, push rod 12 has rubber piston part 12a, and the inwall of rubber piston part 12a and urceolus 11 remains airtight, when user is exerted pressure to push rod 12 by rear, medicament can be extruded by the pin mouth of needle assembly 13.Complete when existing known syringe 10 injections, user reclaims after must needle assembly 13 being put to needle guard with staff.Once careless manipulation, may be stabbed by needle assembly 13 because of carelessness, and increase the probability catching.Therefore, many medical device dealers are devoted to the safety syringe-drum that exploitation can the automatic recovery needle assembly 13, and user can reduce infected chance.
Safety injector typically uses the mechanism such as spring or low pressure, make syringe needle after injection completes automatic accomodation in syringe, wherein, low pressure normally, when syringe is made, is sealed in syringe, yet, before syringe is used, extraneous air can be inhaled in syringe gradually, and causes aforesaid low pressure to be lost gradually, finally even because suction is not enough, cannot smoothly syringe needle be sucked in syringe.As can be seen here, above-mentioned existing safety syringe-drum, in structure and use, obviously still has inconvenience and defect, and is urgently further improved.
Utility model content
Technical problem to be solved in the utility model: provide a kind of vacuum type safety injector for the deficiencies in the prior art, avoid because suction is not enough, syringe needle being sucked in safety syringe-drum smoothly.
The technical problem that this utility model solves can realize by the following technical solutions:
Vacuum type safety injector, comprising:
One overcoat;
One needle stand, the front end of described needle stand is connected with a needle stand, described needle stand has an open rearward end, is at least provided with a groove on the inwall of described open rearward end, is provided with a drag ring that described needle stand can be arranged in the front end of described overcoat on the outer ring surface of the rear end of described needle stand;
One is arranged on the core bar in described overcoat, and described core bar is provided with a core bar piston on the outer ring surface of the position near its front end, and the rear end of described core bar is the core bar operating portion that the described core bar of a control moves reciprocatingly in described overcoat; And
One is arranged on the drag link mechanism in described core bar, and described drag link mechanism comprises a pull bar core and a pull bar; The outer peripheral face of described pull bar core is arranged on by a connection on the inwall of front end of described core bar, the front end of described pull bar core is one can insert the projection in the open rearward end of described needle stand, on the outer cylinder of described projection, be at least provided with one with the open rearward end of described needle stand in the salient point that cooperatively interacts of groove, the rear end of described pull bar core is fixedly connected with one first pull bar piston; The front end of described pull bar is fixedly connected with one second pull bar piston, and the rear end of described pull bar is the core bar operating portion that the described pull bar of a control moves reciprocatingly in described core bar.
In a preferred embodiment of the present utility model, described core bar operating portion is a folding portion that stretches out and turn down being downwards connected with the rear end of described core bar.
In a preferred embodiment of the present utility model, also comprise a sheath, described sheath is arranged on the front end of overcoat in order to protect needle tubing.
Owing to having adopted technical scheme as above, the beneficial effects of the utility model are: user can produce enough low pressure by drag link mechanism, syringe needle is sucked in safety syringe-drum smoothly, can avoid user to be exposed in the infection risk of manual recovery syringe needle, in addition, also can effectively avoid, because stored for a long time, causing suction deficiency and cannot smoothly syringe needle being sucked in syringe.
Accompanying drawing explanation
In order to be illustrated more clearly in this utility model embodiment or technical scheme of the prior art, will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below.
Fig. 1 is the structural representation of existing syringe.
Fig. 2 is structural representation of the present utility model.
The specific embodiment
For technological means, creation characteristic that this utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth this utility model.
Referring to Fig. 2, the vacuum type safety injector providing in figure, comprises overcoat 100, needle stand 200, core bar 300, drag link mechanism and sheath 500.
The front end of needle stand 200 is connected with a needle tubing 210, needle stand has an open rearward end 220, on the inwall of open rearward end 220, be provided with a groove (not shown), on the outer ring surface of the rear end of needle stand 210, be provided with a drag ring 110, this drag ring 110 can be arranged on needle stand 200 in the front end of overcoat 100, now, needle tubing 210 stretches out the front end of overcoat 100 through the front end of overcoat 100.Sheath 500 is arranged on the front end of overcoat 100, in order to protect needle tubing 210, prevents that needle tubing 210 is contaminated.
Core bar 300 is arranged in overcoat 100, and core bar 300 is provided with a core bar piston 310 on the outer ring surface of the position near its front end, and the inwall interference fit of core bar piston 310 and overcoat 100, improves its sealing property.The rear end of core bar 300 is a core bar operating portion 320, and this core bar operating portion 320 is controlled core bar 300 and moved reciprocatingly in overcoat 100.
Drag link mechanism is arranged in core bar 300, it comprises a pull bar core 410 and a pull bar 420, the outer peripheral face of pull bar core 410 is arranged on by a connection on the inwall of front end of core bar 300, this some connection is actually between the outer peripheral face of pull bar core 410 and the inwall of the front end of core bar 300 and is provided with some small lugs 412 as both cross structures, as long as just can disconnect but these small lugs 412 as cross structure are subject to certain pressure, pull bar core 410 now is no longer fettered, can be freely along the interior movement of core bar 300.The front end of pull bar core 410 is one can insert the projection 411 in the open rearward end 220 of needle stand 200, on the outer cylinder of projection 411, be provided with a salient point (not shown), this salient point groove afterwards and in the open rearward end 220 of needle stand 200 in the open rearward end 220 of projection 411 insertion needle stands 200 cooperatively interacts, and makes both form tight structure.The rear end of pull bar core 410 is fixedly connected with a pull bar piston 430a.
The front end of pull bar 420 is fixedly connected with a pull bar piston 430b, the rear end of pull bar 420 is the core bar operating portion that a control pull bar 420 moves reciprocatingly in core bar 300, this core bar operating portion is a folding portion 421 that stretches out and turn down being downwards connected with the rear end of core bar, and this folding portion 421 conveniently pulls outward pull bar 420.
The work process of vacuum type safety injector of the present utility model is as follows:
The folding portion 421 that user is first controlled pull bar 420 pulls outward, and makes the interior formation low pressure of core bar 300; Then, needle tubing 210 is slotting into the liquid, and the core bar operating portion 320 of controlling core bar 300 pulls outward, and medicinal liquid is entered in overcoat 100; Then, medicinal liquid is injected in patient body by needle tubing 210; After injection, by core bar 300, the front end toward overcoat 100 pushes the core bar operating portion 320 of control core bar 300, until the front end of core bar 300 backs down drag ring 110, now the projection 411 of pull bar core 410 inserts in the open rearward end 220 of needle stand 200, and the groove fit of the salient point of the projection 411 of pull bar core 410 and the open rearward end 220 of needle stand 200, meanwhile, pull bar core 410 is connected and is cracked with point between core bar 300, and small lugs 412 disconnects.Owing to having formed low pressure in core bar 300, under the effect of pressure, pull bar core 410 and pull bar piston 430a are toward the rear end retraction of core bar 300, and drive needle stand 200 is toward the rear end retraction of core bar 300.
Claims (3)
1. vacuum type safety injector, is characterized in that, comprising:
One overcoat;
One needle stand, the front end of described needle stand is connected with a needle stand, described needle stand has an open rearward end, is at least provided with a groove on the inwall of described open rearward end, is provided with a drag ring that described needle stand can be arranged in the front end of described overcoat on the outer ring surface of the rear end of described needle stand;
One is arranged on the core bar in described overcoat, and described core bar is provided with a core bar piston on the outer ring surface of the position near its front end, and the rear end of described core bar is the core bar operating portion that the described core bar of a control moves reciprocatingly in described overcoat; And
One is arranged on the drag link mechanism in described core bar, and described drag link mechanism comprises a pull bar core and a pull bar; The outer peripheral face of described pull bar core is arranged on by a connection on the inwall of front end of described core bar, the front end of described pull bar core is one can insert the projection in the open rearward end of described needle stand, on the outer cylinder of described projection, be at least provided with one with the open rearward end of described needle stand in the salient point that cooperatively interacts of groove, the rear end of described pull bar core is fixedly connected with one first pull bar piston; The front end of described pull bar is fixedly connected with one second pull bar piston, and the rear end of described pull bar is the core bar operating portion that the described pull bar of a control moves reciprocatingly in described core bar.
2. vacuum type safety injector as claimed in claim 1, is characterized in that, described core bar operating portion is a folding portion that stretches out and turn down being downwards connected with the rear end of described core bar.
3. vacuum type safety injector as claimed in claim 1 or 2, is characterized in that, also comprises a sheath, and described sheath is arranged on the front end of overcoat in order to protect needle tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420313436.1U CN203898853U (en) | 2014-06-12 | 2014-06-12 | Vacuum type safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420313436.1U CN203898853U (en) | 2014-06-12 | 2014-06-12 | Vacuum type safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203898853U true CN203898853U (en) | 2014-10-29 |
Family
ID=51773149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420313436.1U Expired - Fee Related CN203898853U (en) | 2014-06-12 | 2014-06-12 | Vacuum type safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203898853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354084A (en) * | 2017-09-22 | 2017-11-17 | 遵义市永胜金属设备有限公司 | It is a kind of to brewage pit for white wine |
-
2014
- 2014-06-12 CN CN201420313436.1U patent/CN203898853U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354084A (en) * | 2017-09-22 | 2017-11-17 | 遵义市永胜金属设备有限公司 | It is a kind of to brewage pit for white wine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI JUMIN BIOTECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHANGHAI SHUANGGE INDUSTRIAL CO., LTD. Effective date: 20141013 |
|
| C14 | Grant of patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141013 Address after: 201400 Shanghai City, Fengxian District Hangzhou Highway No. 1888 building Sixth Patentee after: SHANGHAI JUMIN BIOLOGICAL TECHNOLOGY CO., LTD. Address before: 201400 No. 1888, Shanghai Hangzhou highway, Jianghai Economic Zone, Fengxian District, Shanghai Patentee before: Double-Dove Industrial Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201400 Shanghai City, Fengxian District Hangzhou Highway No. 1888 building Sixth Patentee after: Poly Biological Technology Co Ltd Address before: 201400 Shanghai City, Fengxian District Hangzhou Highway No. 1888 building Sixth Patentee before: SHANGHAI JUMIN BIOLOGICAL TECHNOLOGY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20190612 |