CN201216782Y - Self-destruction injector - Google Patents
Self-destruction injector Download PDFInfo
- Publication number
- CN201216782Y CN201216782Y CNU2008200489234U CN200820048923U CN201216782Y CN 201216782 Y CN201216782 Y CN 201216782Y CN U2008200489234 U CNU2008200489234 U CN U2008200489234U CN 200820048923 U CN200820048923 U CN 200820048923U CN 201216782 Y CN201216782 Y CN 201216782Y
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- CN
- China
- Prior art keywords
- needle
- syringe
- window
- needle stand
- self
- 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 relates to a self-destruction injector which comprises a needle, a needle seat, a needle cylinder and a needle rod; an umbrella-shaped end head is arranged at the top end of the needle rod; and steps are arranged below the umbrella-shaped end head. The injector is characterized in that a window is formed on the hole wall of the center hole of the needle seat; an elastic stopper extending upwards from the lower edge of the window is arranged inside the window; a lug boss is arranged on the external surface of the elastic stopper; and the lug boss protrudes from the outer hole wall of the center hole of the needle seat, and is matched with the inner wall of the needle cylinder. Elastic barbs are indirectly produced during assembling of the utility model rather than directly arranging the elastic barbs inside the needle seat, thereby avoiding damage to elastic barbs because of demoulding during the manufacture of the needle seat. Moreover, the manufacturing process is relatively simple, the rate of finished product is relatively high, and the cost is reduced.
Description
Technical field
This utility model relates to a kind of syringe, concrete relates to a kind of self-destruction syringe that prevents accidental puncture.
Background technology
The present syringe that generally uses, for preventing to use the back syringe needle to be retained in the outside, cause accidental puncture and transmission of disease, use self-destruction syringe mostly, as its self-destruction mode of Chinese patent ZL200620141394.3 and United States Patent (USP): pat5931813 is that the needle stand inwall directly is provided with one of elasticity agnail or two, the shank top is set to umbrella-shaped structure, when shank is pushed ahead to the elasticity agnail, the vertical umbrella of shank termination makes it to the bending of needle stand inwall direction the extruding of elasticity agnail, when shank continues to push ahead when umbrella partly breaks away from the elasticity agnail, the elasticity agnail restores to the original state under the elastic force effect, make the elasticity agnail be stuck in the below step of umbrella termination, shank top, form self-destruction, pumpback shank after finishing when having an injection, the umbrella termination of shank is under the effect of shank back-suction at this moment, because and the elasticity agnail of needle stand forms self-destruction, therefore together bring into needle stand and syringe needle in the syringe, thereby finish the self-destroying function of syringe, this technical scheme can better be finished the self-destroying function of syringe, prevent that thereby syringe needle is retained in outer accidental puncture and causes pathophoresis, but because this elasticity agnail is directly to be arranged at the needle stand inwall, just when manufacturing needle stand, just need simultaneously directly this elasticity agnail of injection moulding, therefore cause the difficulty that when manufacturing needle stand, produces the demoulding, perhaps when the demoulding, damage the elasticity agnail, cause percent defective higher, cost increases.
Summary of the invention:
The purpose of this utility model provides a kind of difficulty that does not have the demoulding when manufacturing needle stand that does not need directly to be provided with the elasticity agnail, perhaps can not damage the elasticity agnail, lower-cost a kind of self-destruction syringe during the demoulding.
For realizing this purpose, this utility model provides following technical scheme: a kind of self-destruction syringe, comprise syringe needle, needle stand, syringe, shank, described shank top is provided with the umbrella termination, below, umbrella termination is provided with step, it is characterized in that: the hole wall of the centre bore of described needle stand is provided with a window, have one in the described window from the upwardly extending flexible block of described window lower limb, the outer surface of described flexible block is provided with a boss, described boss expose outside described needle stand centre bore outer hole wall and match with described syringe inwall.
This utility model is not owing to directly be provided with the elasticity agnail in needle stand, therefore can not produce when manufacturing needle stand because the damage of elasticity agnail during the demoulding, and production technology is comparatively simple, and yield rate is higher, and cost reduces.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the longitudinal profile sketch map of self-destruction syringe of the present utility model;
Fig. 2 is the vertical sketch map of needle stand of the present utility model;
Fig. 3 is the A portion enlarged drawing of Fig. 1;
The specific embodiment
As Fig. 1-a kind of self-destruction syringe shown in Figure 2, comprise syringe needle 1, needle stand 2, syringe 3, shank 4, described shank 4 tops are provided with umbrella termination 5, and 5 belows, umbrella termination are provided with step 6; The hole wall of the centre bore of wherein said needle stand 2 is provided with a window 7, have one in the described window 7 from the upwardly extending flexible block 8 of window lower limb, the outer surface of described flexible block 8 is provided with a boss 9, described boss 9 external demands go out described needle stand 2 centre bore outer hole wall and match with the inwall of described syringe 3.This utility model is at the center bore inner wall of needle stand 2 and be provided with the elasticity agnail directly is set, but be provided with the flexible block 8 of boss 9 at the center of described needle stand 2 hole wall, because in the known technology of existing syringe, the close fit during outer wall of the inwall of described syringe 3 and described needle stand 2, therefore in this utility model when syringe assembles, because the boss 9 of described flexible block 8 exposes to the outer hole wall of the centre bore of described needle stand 2, therefore the horizontal extruding that is subjected to syringe 3 inwalls of described boss 9 makes described flexible block 8 tilt to the direction of needle stand 2 centre bores, thereby be connected in the centre bore of described needle stand 2 and form elasticity agnail structure, work process and operation principle that the self-destruction syringe that forms elasticity agnail structure and above-mentioned known patented technology are finished in assembling are consistent, narrate no longer one by one at this, this utility model is not because needle stand 2 directly is provided with the elasticity agnail before assembling, therefore when manufacturing, do not produce the difficulty of the demoulding and damage the elasticity agnail (as shown in Figure 2) takes place because of the direct injection moulding of elasticity agnail, thereby yield rate is higher when producing syringe, cost reduces, and structure is more reasonable simultaneously.
Claims (1)
1, a kind of self-destruction syringe, comprise syringe needle, needle stand, syringe, shank, described shank top is provided with the umbrella termination, below, umbrella termination is provided with step, it is characterized in that: the hole wall of the centre bore of described needle stand is provided with a window, have one in the described window from the upwardly extending flexible block of described window lower limb, the outer surface of described flexible block is provided with a boss, described boss expose outside described needle stand centre bore outer hole wall and match with described syringe inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200489234U CN201216782Y (en) | 2008-06-05 | 2008-06-05 | Self-destruction injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200489234U CN201216782Y (en) | 2008-06-05 | 2008-06-05 | Self-destruction injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201216782Y true CN201216782Y (en) | 2009-04-08 |
Family
ID=40539618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200489234U Expired - Fee Related CN201216782Y (en) | 2008-06-05 | 2008-06-05 | Self-destruction injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201216782Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721320A (en) * | 2014-01-25 | 2014-04-16 | 圣光医用制品有限公司 | Safe injector |
-
2008
- 2008-06-05 CN CNU2008200489234U patent/CN201216782Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721320A (en) * | 2014-01-25 | 2014-04-16 | 圣光医用制品有限公司 | Safe injector |
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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: 20090408 Termination date: 20150605 |
|
| EXPY | Termination of patent right or utility model |