CN200994972Y - Safety spring self-destructive syringe - Google Patents
Safety spring self-destructive syringe Download PDFInfo
- Publication number
- CN200994972Y CN200994972Y CN 200720047387 CN200720047387U CN200994972Y CN 200994972 Y CN200994972 Y CN 200994972Y CN 200720047387 CN200720047387 CN 200720047387 CN 200720047387 U CN200720047387 U CN 200720047387U CN 200994972 Y CN200994972 Y CN 200994972Y
- Authority
- CN
- China
- Prior art keywords
- injection
- injection tube
- injection rod
- spring
- sleeve
- 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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Abstract
The utility model relates to a spring safe auto-disable injector, which comprises a needle guard (1), a steel needle (2), a needle stand (3), a syringe (8) and an injecting stick (7) in the syringe. A rubber plug (6) is arranged on the upper end of the injecting stick, the steel needle (2) is equipped on the upper part of the needle stand, a convex ring (15) is arranged at the lower part of the needle stand, and a sealing ring (4) is arranged between the wall of the convex ring and the inner wall of the syringe (8) upper part. The utility model is characterized in that at least two hooks which can buckle and connected with the convex ring (15) are arranged at the top end of the injecting stick (7); a injecting stick automatic back drawing device is arranged at the rear end of the syringe (8).
Description
Technical field:
This utility model relates to a kind of self-destroyed syringe, and especially a kind of the use in injection can make the safe self-breaking syringe of draw point pumpback to the injection tube under the effect of back at spring.
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.
Summary of the invention:
The purpose of this utility model is to overcome the weak point of the above syringe, provides a kind of and uses its draw point of back can return to safe self-breaking syringe in the injection tube automatically in injection.
This utility model, comprise needle guard, draw point, needle stand, injection tube and be positioned at the injection rod of injection tube, at the upper end of injection rod configuration plug, at the top of needle stand installing draw point, be provided with bulge loop in the lower end of needle stand, between bulge loop perisporium and injection tube upper inside wall, sealing ring is set, two grabs that are connected with the bulge loop buckle only are set at least on the top of injection rod, described grab only can be 3-4, in the rear end of injection tube, the automatic pumpback device of injection rod is set.
This utility model, the automatic pumpback device of described injection rod can be made of the sleeve that is arranged at the injection tube rear end, spring, packing ring and the push card of being located on the injection rod, telescopic internal diameter is greater than the internal diameter of injection tube, sleeve and injection tube are for being fastenedly connected, spring places between sleeve lining and the injection rod outer wall, the one end withstands on the injection tube rear end, and the other end withstands on stopping on the wing of sleeve rear portion by packing ring, and the external diameter of push card and telescopic internal diameter are for movingly.
This utility model can be provided with wide diameter portion in the bottom of described injection tube, and the internal diameter of wide diameter portion and the external diameter of spring are for movingly.
This utility model, because the top at injection rod is provided with the grab that can be connected with the bulge loop buckle, and in the rear end of injection tube, the automatic pumpback device of injection rod is set, after injection is finished, the top that bulge loop and the injection rod vertical grab of draw point by the needle stand bottom is buckled in injection rod; Meanwhile, under the effect of automatic pumpback device spring, downward pull injection rod, injection rod drives draw point and returns to automatically in the injection tube, reaches the effect of safety and self-destruction.
Description of drawings:
Fig. 1, Fig. 2 are the structure principle chart of embodiment.
Fig. 3, Fig. 4 are embodiment work process sketch map.
Among the figure, 1, needle guard 2, draw point 3, needle stand 4, sealing ring 5, grab 6, plug 7, injection rod 8, injection tube 9, spring 10, packing ring 11, stop wing 12, push card 13, handle 14, sleeve 15, bulge loop 16, wide diameter portion.
The specific embodiment:
With reference to accompanying drawing, this spring type safety self-destruction syringe, comprise needle guard 1, draw point 2, needle stand 3, injection tube 8 and be positioned at the injection rod 7 of injection tube, at the upper end of injection rod configuration plug 6, at the top of needle stand installing draw point 2, be provided with bulge loop 15 in the lower end of needle stand, between bulge loop perisporium and injection tube 8 upper inside wall, sealing ring 4 be set, 3 or 4 grabs 5 that are connected with bulge loop 15 buckles only are set on the top of injection rod 7; In the rear end of injection tube 8, the automatic pumpback device of injection rod is set.The automatic pumpback device of described injection rod is made of the sleeve 14 that is arranged at the injection tube rear end, spring 9, packing ring 10 and the push card 12 be located on the injection rod, telescopic internal diameter is greater than the internal diameter of injection tube, sleeve and injection tube are for being fastenedly connected (not drawing among the figure), spring places between sleeve lining and the injection rod outer wall, the one end withstands on the injection tube rear end, the other end withstands on stopping on the wing 11 of sleeve rear portion by packing ring, and the external diameter of push card and telescopic internal diameter are for movingly.Present embodiment for reducing telescopic length, in the bottom of described injection tube, is provided with wide diameter portion 16, and the external diameter of the internal diameter of wide diameter portion and spring 9 is for movingly.
The using method and the operation principle of present embodiment are as follows:
When clinical use, the using method of syringe extracts medicinal liquid routinely, and also the using method of syringe is carried out injecting liquid drug routinely.Owing on the top of injection rod grab 5 is set, after injection was finished, grab 5 was buckled on the bulge loop 15 of needle stand 3 bottoms, made draw point 2 be connected the top of injection rod 7 by needle stand 3 buckles; Meanwhile, enter sleeve 14 owing to push away the push card 12 that makes its afterbody on the injection rod 7, take advantage of a situation and to stop that wing 11 is to extrapolation on the sleeve 14, eliminated the barrier effect (as shown in Figure 3) that stops 11 pairs of springs 9 of wing, spring 9 is given 12 1 thrusts of push card by packing ring 10, injection rod 7 is pulled down (direction shown in the figure), draw point 2 is returned in the injection tube 8 (as shown in Figure 4) automatically together with needle stand 3, reach the effect of safety and self-destruction.
Claims (4)
1, a kind of spring type safety self-destruction syringe, comprise needle guard (1), draw point (2), needle stand (3), injection tube (8) and be positioned at the injection rod (7) of injection tube, at the upper end of injection rod configuration plug (6), at the top of needle stand installing draw point (2), be provided with bulge loop (15) in the lower end of needle stand, between bulge loop perisporium and injection tube (8) upper inside wall, sealing ring (4) is set, it is characterized by: two grabs (5) that are connected with bulge loop (15) buckle only are set at least on the top of injection rod (7); Rear end in injection tube (8) is provided with the automatic pumpback device of injection rod.
2, spring type safety self-destruction syringe according to claim 1, it is characterized by: the automatic pumpback device of described injection rod is made of the sleeve that is arranged at the injection tube rear end (14), spring (9), packing ring (10) and the push card (12) be located on the injection rod, telescopic internal diameter is greater than the internal diameter of injection tube, sleeve and injection tube are for being fastenedly connected, spring places between sleeve lining and the injection rod outer wall, the one end withstands on the injection tube rear end, the other end stops that by what packing ring withstood on the sleeve rear portion on the wing (11), the external diameter of push card and telescopic internal diameter are for movingly.
3, spring type safety self-destruction syringe according to claim 2 is characterized by: in the bottom of described injection tube, be provided with wide diameter portion (16), the external diameter of the internal diameter of wide diameter portion and spring (9) is for movingly.
4, according to claim 1,2 or 3 described spring type safety self-destruction syringes, it is characterized by: described grab (5) is 3-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720047387 CN200994972Y (en) | 2007-01-06 | 2007-01-06 | Safety spring self-destructive syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720047387 CN200994972Y (en) | 2007-01-06 | 2007-01-06 | Safety spring self-destructive syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200994972Y true CN200994972Y (en) | 2007-12-26 |
Family
ID=38993388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720047387 Expired - Fee Related CN200994972Y (en) | 2007-01-06 | 2007-01-06 | Safety spring self-destructive syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200994972Y (en) |
-
2007
- 2007-01-06 CN CN 200720047387 patent/CN200994972Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071226 Termination date: 20110106 |