CN101143237A - Steel needle retractable safety self-destructing syringe - Google Patents
Steel needle retractable safety self-destructing syringe Download PDFInfo
- Publication number
- CN101143237A CN101143237A CNA2007100310830A CN200710031083A CN101143237A CN 101143237 A CN101143237 A CN 101143237A CN A2007100310830 A CNA2007100310830 A CN A2007100310830A CN 200710031083 A CN200710031083 A CN 200710031083A CN 101143237 A CN101143237 A CN 101143237A
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- needle stand
- ring
- injection
- neilsbed
- internal
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Abstract
The present invention relates to a safe self-destruction injector which can retract a steel needle into an injection tube after using. The present invention comprises the injection tube, an external neilsbed connected with the top of the injection tube, an injection rod which is arranged in the injection tube and a rubber plug which is arranged at the top of the injection rod. The top of the injection penetrate the rubber plug. An internal neilsbed is arranged in the external neilsbed and breaks through the external neilsbed. The steel needle is installed on the internal neilsbed. The lower end of the internal neilsbed is provided with an agnail stabber. The top end of the injection rod is provided with an internal snap ring. The agnail stabber and the internal snap ring are matched together by a snap buckle. The external wall of the internal neilsbed is provided with a snap convex ring, and the internal wall of the external neilsbed is provided with a snap groove. The snap convex ring and the snap groove are matched together by a snap buckle. The present invention not only can prevent the internal nerlsbed from retracting to guarantee that the injection can be done smoothly, but also can play the role of sealing. The present invention has the features of simple structure, low requirement for assembling technology, high rate of products meeting standards and so on. The present invention is suitable for large-scale manufacturing of production line.
Description
Technical field:
The present invention relates to a kind of self-destroyed syringe, can make the safe self-breaking syringe of steel needle retractable to the injection tube after especially a kind of use.
Background technology:
Cause the cross infection of virus for fear of using antihygienic syringe, disposable syringe is widely used at medical field.Reuse in order to stop artificial recovery, people are provided with self-desttruction equipment on disposable syringe.But,, causes common self-destruction syringe the cross infection of virus though preventing the repeated use of syringe to a certain extent, but syringe uses the back because draw point exposes and makes depleted syringe produce many inconvenience in processes such as collection, transportation, processing, still might stab medical worker and other relevant personnel, cause the infection of virus and bacteria.
Chinese patent once disclosed a kind of draw point pumpback formula syringe, described syringe is between draw point lower end and injection rod bayonet unit to be set, behind injecting liquid drug, injection rod is evacuated to draw point in the injection tube by bayonet unit, though this syringe can reach self-destruction and prevent the purpose that the draw point thorn is hurted sb.'s feelings, but, there are shortcomings such as assembly technology requirement height, product percent of pass are low to cause it because its needle stand and injection tube employing angle-inserting type is connected.
Summary of the invention:
The objective of the invention is to overcome the weak point of the above draw point pumpback formula syringe, a kind of its steel needle retractable safety self-destructing syringe that assembly technology requirement is low, medicinal liquid is non-leakage, product percent of pass is high is provided.
The present invention, comprise injection tube, the outer needle stand that is connected with the injection tube top, be positioned at the injection rod of injection tube and place the vertical plug of injection rod, the top of injection rod penetrates described plug, interior needle stand is set, interior needle stand places outer needle stand and passes outer needle stand, interior needle stand be axially arranged with tube for transfusion, in draw point is installed on the needle stand; Be provided with the agnail awl in the lower end of interior needle stand, snap ring hole in the top of injection rod is provided with, agnail awl and interior snap ring are for being clasped; Be provided with the card bulge loop on the periphery wall of interior needle stand, the internal perisporium of needle stand is provided with the card groove outside, and card bulge loop and card groove are for being clasped.
The present invention, described injection tube is connected to adopt with outer needle stand and is threaded, and the external screw thread that connecting device is provided with by the bottom of needle stand outside, sleeve and the interlayer screw thread that is provided with on the injection tube top constitute.
The present invention, described plug can adopt the elasticity plug, comprises following ring, medium ring and goes up ring, and following ring is that disjunctor is connected with medium ring, and last ring is connected with medium ring by the elastic compression ring, on the axis hole of elasticity plug, is provided with groove.The elasticity plug is applied in after the steel needle retractable safety self-destructing syringe, can be under the prerequisite that does not change syringe construction, and plug can arrive " 0 " scale position, and the medicine that residues in the injection tube after the medicine injection meets relevant prescription.
The present invention because injection rod top has interior snap ring, passes plug with plug closely cooperates, and can bore buckle with the agnail of interior needle stand lower end again and be connected, and behind liquid medicine injection, interior needle stand and draw point can be returned in the injection tube, reaches safe effect.Have characteristics such as simple in structure,, product percent of pass height less demanding, be applicable to the streamline large-scale production assembly technology.
Description of drawings:
Fig. 1 is the structure principle chart of embodiment;
Fig. 2 is an embodiment steel needle retractable view;
Fig. 3 is an elastic gum plug structure schematic diagram;
Fig. 4 is the R portion enlarged drawing of Fig. 1.
Among the figure, 1, needle guard 2, draw point 3, interior needle stand 31, tube for transfusion 32, card bulge loop 33, agnail awl 34, filler chamber 4, outer needle stand 41, external screw thread 42, card groove 5, injection rod 51, interior snap ring 52, the breach 6 that fractures, plug 61, encircle 62 down, medium ring 63, on encircle 64, groove 65, elastic compression ring 7, injection tube 71, interlayer screw thread 72, inner sleeve.
The specific embodiment:
Referring to figs. 1 through Fig. 4, this steel needle retractable safety self-destructing syringe, comprise injection tube 7, interior needle stand 3, outer needle stand 4, injection rod 5 and plug 6, the top of injection rod penetrates described plug, and interior needle stand places outer needle stand and passes outer needle stand, interior needle stand be axially arranged with tube for transfusion 31, the upper end installing draw point 2 of interior needle stand, and at the upper end of interior needle stand filler chamber 34 is set, behind the installing draw point at this place's filler, with fixing draw point; Be provided with agnail awl 33 in the lower end of interior needle stand, snap ring 51 in the top of injection rod is provided with, and agnail awl and interior snap ring hole are for being clasped; Be provided with card bulge loop 32 on the periphery wall of interior needle stand, the internal perisporium of needle stand is provided with card groove 42 outside, and card bulge loop and card groove are for being clasped.
Present embodiment, outer needle stand are connected the employing thread connecting mode with the injection tube top: the bottom of needle stand 4 is provided with external screw thread 41 outside, is provided with sleeve 72 and interlayer screw thread 71 on the injection tube top, and outer needle stand is by being threaded in the top of injection tube.
Present embodiment, plug 6 adopts the elasticity plugs, and the elasticity plug comprises down ring 61, medium ring 62 and goes up ring 63, and following ring is that disjunctor is connected with medium ring, and last ring is connected with medium ring by elastic compression ring 65, on the axis hole of elasticity plug, is provided with groove 64.
Its using method and operation principle are as follows:
When clinical use, take off needle guard 1 earlier, the using method of syringe extracts medicinal liquid routinely, and also the using method of syringe is carried out injecting liquid drug routinely.Owing to be provided with card bulge loop 32 on interior needle stand 3 periphery walls, needle stand 4 internal perisporiums are provided with and the card groove 42 that blocks bulge loop 32 couplings outside, contract in the needle stand in can preventing, guarantee carrying out smoothly of injection work, also can play sealing function.After injection is finished, because the agnail of interior needle stand 3 lower ends awl 33 is buckled on the interior snap ring 51 on injection rod top, then, the injection rod 5 of pulling back, when pull-back forces greater than card bulge loop 32 during with the buckle frictional force of blocking between the groove 42, interior needle stand 3 breaks away from outer needle stand 4, return in the injection tube together with draw point 2, last, injection rod is fractureed at breach 52 places that fracture, the draw point of crossing with medicinal liquid and contact patients is stored in the injection tube, reaches the effect of safety and self-destruction.
Claims (3)
1. steel needle retractable safety self-destructing syringe, the outer needle stand (4) that comprise injection tube (7), is connected, the injection rod (5) that is positioned at injection tube and place the vertical plug of injection rod (6) with the injection tube top, the top of injection rod penetrates described plug, it is characterized by: interior needle stand (3) is set, interior needle stand places outer needle stand and passes outer needle stand, interior needle stand be axially arranged with tube for transfusion (31), in draw point (2) is installed on the needle stand; Be provided with agnail awl (33) in the lower end of interior needle stand, be provided with interior snap ring (51) on the top of injection rod, agnail awl and interior snap ring are for being clasped; Be provided with card bulge loop (32) on the periphery wall of interior needle stand, the internal perisporium of needle stand is provided with card groove (42) outside, and card bulge loop and card groove are for being clasped.
2. steel needle retractable safety self-destructing syringe according to claim 1, it is characterized by: the bottom of needle stand is provided with external screw thread (41) outside described, the injection tube top is provided with sleeve (72) and interlayer screw thread (71), and outer needle stand is connected with the injection tube top by screw thread.
3. steel needle retractable safety self-destructing syringe according to claim 1 and 2, it is characterized by: described plug (6) is the elasticity plug, comprise ring (61), medium ring (62) and last ring (63) down, following ring is that disjunctor is connected with medium ring, last ring is connected with medium ring by elastic compression ring (65), on the axis hole of elasticity plug, be provided with groove (64).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100310830A CN101143237A (en) | 2007-10-25 | 2007-10-25 | Steel needle retractable safety self-destructing syringe |
| US12/008,490 US20080275394A1 (en) | 2007-05-03 | 2008-01-11 | Self-destroy safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100310830A CN101143237A (en) | 2007-10-25 | 2007-10-25 | Steel needle retractable safety self-destructing syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101143237A true CN101143237A (en) | 2008-03-19 |
Family
ID=39206088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100310830A Pending CN101143237A (en) | 2007-05-03 | 2007-10-25 | Steel needle retractable safety self-destructing syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101143237A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319470A (en) * | 2011-09-20 | 2012-01-18 | 黄灵扬 | Self-destructing type spring injector |
| CN102553029A (en) * | 2011-10-09 | 2012-07-11 | 李慧慧 | Sealing structure of disposable safe syringe needle seat |
| CN103157157A (en) * | 2011-12-19 | 2013-06-19 | 陈道申 | Safe injector |
| CN113616880A (en) * | 2020-05-09 | 2021-11-09 | 苏州德奇汽车配件系统有限公司 | Self-destruction disposable syringe |
-
2007
- 2007-10-25 CN CNA2007100310830A patent/CN101143237A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319470A (en) * | 2011-09-20 | 2012-01-18 | 黄灵扬 | Self-destructing type spring injector |
| CN102319470B (en) * | 2011-09-20 | 2014-06-25 | 山西新华美医疗器械有限公司 | Self-destructing type spring injector |
| CN102553029A (en) * | 2011-10-09 | 2012-07-11 | 李慧慧 | Sealing structure of disposable safe syringe needle seat |
| CN102553029B (en) * | 2011-10-09 | 2013-06-26 | 李慧慧 | Sealing structure of disposable safe syringe needle seat |
| CN103157157A (en) * | 2011-12-19 | 2013-06-19 | 陈道申 | Safe injector |
| CN103157157B (en) * | 2011-12-19 | 2016-01-13 | 陈道申 | A kind of safety injector |
| CN113616880A (en) * | 2020-05-09 | 2021-11-09 | 苏州德奇汽车配件系统有限公司 | Self-destruction disposable syringe |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080319 |