CN203370162U - Safety needle base locating structure of self-destruction injector - Google Patents
Safety needle base locating structure of self-destruction injector Download PDFInfo
- Publication number
- CN203370162U CN203370162U CN201320498702.8U CN201320498702U CN203370162U CN 203370162 U CN203370162 U CN 203370162U CN 201320498702 U CN201320498702 U CN 201320498702U CN 203370162 U CN203370162 U CN 203370162U
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- China
- Prior art keywords
- needle stand
- supporting bridge
- needle
- needle base
- syringe
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Abstract
The utility model discloses a safety needle base locating structure of a self-destruction injector. The safety needle base locating structure of the self-destruction injector comprises a needle cylinder and a needle base body arranged at the front end of an inner hole of the needle cylinder. A supporting bridge which protrudes downwards is arranged at the lower portion of the needle base body, a connection hole is formed in the middle of the supporting bridge, and a clamping-connecting groove is formed between the supporting bridge and the bottom of the needle base body and can be combined and connected with a clamping tongue of the head portion of a core rod in a clamped mode. The total length of the supporting bridge is larger than the maximum outer diameter of the needle base body. The supporting bridge can stretch tight sidelong under the action of external force so as to enable the lower portion of the outer wall of the needle base body to protrude outwards and to be combined and connected with a clamping groove of the inner hole of the needle cylinder. On the premise of locating the needle base body and the inner hole of the needle cylinder effectively, a sealing ring is removed, the structure is simplified, production cost is lowered effectively and assembly is convenient.
Description
Technical field
This utility model relates to a kind of safe self-breaking syringe, is specially the needle stand location structure of safe self-breaking syringe.
Background technology
For the consideration of avoiding the medical hidden danger such as cross infection, self-destruction syringe is widely used.At present, self-destruction syringe type on the market is a lot, and it is to be positioned at the front end of syringe endoporus by plug or elasticity support claw formula snap-in structure that some syringes are wherein arranged.At this, for plug locate mode structure, accessory is relatively many, and cost is high, and assembling is a little complicated; And, for elasticity support claw formula structure, structure is relatively complicated, processing cost is higher.
The utility model content
For the problems referred to above, this utility model has designed a kind of needle stand location structure of safe self-breaking syringe, and it goes down except sealing ring in the prerequisite that guarantees needle stand and syringe endoporus effective location, simplifies the structure simultaneously, can effectively reduce production costs, convenient for assembly.
For achieving the above object, this utility model is by the following technical solutions:
A kind of needle stand location structure of safe self-breaking syringe, comprise syringe and the needle stand that is arranged on syringe endoporus front end, it is characterized in that: the bottom of described needle stand is provided with the supporting bridge of the Intermediate Gray connecting hole that is lower process, between supporting bridge and needle stand bottom, form a slot can with the block tongue engagement connection of core bar head; The whole length of described supporting bridge is greater than the maximum outside diameter of needle stand, supporting bridge can be laterally under the effect of external force exceptionally straight and make needle stand outer wall bottom evagination and with the draw-in groove engagement connection of syringe endoporus.
Further, the upper surface of above-mentioned supporting bridge is provided with the groove that strengthens at least together the supporting bridge deformation performance.
Further, above-mentioned slot convexes with the stop bit boss of supporting bridge after exceptionally straight top down.
Further, above-mentioned supporting bridge distributes radially centered by middle connecting hole.
Further, the endoporus front portion of above-mentioned needle stand directly is connected needle point is being set.
Further, the head of the above-mentioned needle stand outside is provided with Rule conical structure that can carry out the needle point replacement.
Under original state, the supporting bridge of whole needle stand bottom is lower convex state, the outer wall of needle stand is not outstanding, but insert the syringe endoporus whole needle stand Portable power saving, when needle stand arrives syringe endoporus bottom, utilize external force to make to push away until it is fully exceptionally straight on the lower protruding supporting bridge in needle stand bottom, because the length of supporting bridge is greater than the maximum outside diameter of needle stand, to make needle stand outer wall bottom evagination after it is exceptionally straight and with the syringe endoporus on the draw-in groove engagement connection, realize the effective location of needle stand in syringe.
And in the self-destruction process, the block tongue of core bar head passes the slot entered between supporting bridge and needle stand bottom after the connecting hole in the middle of supporting bridge and realizes engagement connection, core bar is drop-down afterwards, block tongue drives protruding distortion under supporting bridge and restores, and then the outer lug of needle stand outer wall bottom is inside contracted, the draw-in groove of this process on outer lug and syringe endoporus breaks away from, now, the constraint release of needle stand and syringe, then can bounce back together and realize self-destruction with core bar.
To sum up, this utility model directly utilizes the deformation characteristic of needle stand bottom support bridge and realizes the effective location of needle stand in syringe endoporus draw-in groove, and the distortion by supporting bridge in the self-destruction process resets and realizes the releasing of engaging constraint, it has removed ring structure when guaranteeing the needle stand effective location, have simple in structure, manufacturing cost is low, assembles easy effect.
The accompanying drawing explanation
Fig. 1, structural representation of the present utility model;
The structural representation of Fig. 2, this utility model syringe;
The structural representation of Fig. 3, this utility model needle stand;
The upward view of Fig. 4, this utility model needle stand;
The second embodiment of Fig. 5, this utility model supporting bridge;
The third embodiment of Fig. 6, this utility model supporting bridge;
Structural representation after Fig. 7, this utility model needle stand and syringe assembling;
Fig. 8, the structural representation of this utility model in the self-destruction process;
The schematic diagram of Fig. 9, needle stand head arranged outside Rule conical structure;
The second embodiment of Figure 10, this utility model needle stand.
The specific embodiment
As Figure 1-3, a kind of needle stand location structure of safe self-breaking syringe, comprise syringe 1 and the needle stand 2 that is arranged on syringe endoporus 11 front ends.
The bottom of described needle stand 2 is provided with the supporting bridge 21 of the Intermediate Gray connecting hole 211 that is lower process, between supporting bridge 21 and needle stand 2 bottoms, form a slot 22 can with block tongue 31 engagement connections of core bar 3 heads.The whole length of described supporting bridge 21 is greater than the maximum outside diameter of needle stand 2, supporting bridge 21 can be laterally under the effect of external force exceptionally straight and make needle stand 2 outer wall bottom evaginations and with draw-in groove 111 engagement connections of syringe endoporus 11.
At this, for strengthening the bulk deformation performance of supporting bridge 21, the upper surface of described supporting bridge 21 is provided with at least one groove 212.In addition, for avoiding supporting bridge 21 because of the stressed excessive reverse fovea superior phenomenon that occurs, described slot 22 convexes with stop bit boss 221 top down, its structure as shown in figure 10, when touching, the upper surface of supporting bridge 21 and stop bit boss 221 lower surfaces just make it in exceptionally straight state, to guarantee that outer lug 23 can normally be formed at needle stand 2 outer wall bottoms.
Described supporting bridge 21 distributes radially centered by middle connecting hole 211, can be arranged to yi word pattern, and its structure as shown in Figure 4, or cross, its structure as shown in Figure 5, or bifurcation font, its structure as shown in Figure 6, is not lifted in class at this, sets as required in practice.
Under original state, the supporting bridge 21 of whole needle stand 2 bottoms is lower convex state, the outer wall of needle stand 2 is not outstanding, but insert syringe endoporus 11 whole needle stand 2 Portable power savings, its structure as shown in Figure 1, when needle stand 2 arrives syringe endoporus 11 bottom, utilize external force to make on supporting bridge 21 protruding under needle stand 2 bottoms to push away until it is fully exceptionally straight, because the length of supporting bridge 21 is greater than the maximum outside diameter of needle stand 2, after it is exceptionally straight, will make needle stand 21 outer wall bottoms form outer lug 23 and with syringe endoporus 11 on draw-in groove 111 engagement connections, realize the effective location of needle stand 2 in syringe 1, its structure as shown in Figure 7.
And in the self-destruction process, the block tongue 31 of core bar 3 heads passes the slot 22 entered between supporting bridge 21 and needle stand 2 bottoms after the connecting hole 211 in the middle of supporting bridge 21 and realizes engagement connection, core bar 3 is drop-down afterwards, block tongue 31 drives 21 times protruding distortion of supporting bridge and restores, and then the outer lug 23 of needle stand 2 outer wall bottoms is inside contracted, this process is until draw-in groove 111 disengagings on outer lug 23 and syringe endoporus 11, its structure as shown in Figure 8, now, the constraint release of needle stand 2 and syringe 1, then needle stand 2 can bounce back together and realizes self-destruction with core bar 3.
To sum up, this utility model directly utilizes the deformation characteristic of needle stand 2 bottom support bridges 21 and realizes the effective location of needle stand 2 in syringe endoporus draw-in groove 111, and the distortion by supporting bridge 21 in the self-destruction process resets and realizes the releasing of engaging constraint, it has removed ring structure when guaranteeing needle stand 2 effective locations, have simple in structure, manufacturing cost is low, assembles easy effect.
In the present embodiment, the endoporus front portion of described needle stand 2 directly is connected needle point 4 is being set, its structure as shown in Figure 1, in practice, also can be provided with Rule conical structure 24 that can carry out the needle point replacement in the head outside of needle stand 2, with the needle point that facilitates different model, replace and use.
The above, it is only better embodiment of the present utility model, not utility model is done to any pro forma restriction, every foundation know-why of the present utility model, to any simple modification made for any of the above embodiments, equivalent variations or modification, still belongs in the scope of technical solutions of the utility model.
Claims (6)
1. the needle stand location structure of a safe self-breaking syringe, comprise syringe and the needle stand that is arranged on syringe endoporus front end, it is characterized in that: the bottom of described needle stand is provided with the supporting bridge of the Intermediate Gray connecting hole that is lower process, between supporting bridge and needle stand bottom, form a slot can with the block tongue engagement connection of core bar head; The whole length of described supporting bridge is greater than the maximum outside diameter of needle stand, supporting bridge can be laterally under the effect of external force exceptionally straight and make needle stand outer wall bottom evagination and with the draw-in groove engagement connection of syringe endoporus.
2. needle stand location structure as claimed in claim 1, it is characterized in that: the upper surface of described supporting bridge is provided with the groove that strengthens at least together the supporting bridge deformation performance.
3. needle stand location structure as claimed in claim 1 is characterized in that: described slot convexes with the stop bit boss of supporting bridge after exceptionally straight top down.
4. the described needle stand location structure of claim as arbitrary as claim 1-3 is characterized in that: described supporting bridge distributes radially centered by middle connecting hole.
5. the described needle stand location structure of claim as arbitrary as claim 1-3, it is characterized in that: the endoporus front portion of described needle stand directly is connected needle point is being set.
6. the described needle stand location structure of claim as arbitrary as claim 1-3, is characterized in that: be provided with Rule conical structure that can carry out the needle point replacement outside the head of described needle stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498702.8U CN203370162U (en) | 2013-08-15 | 2013-08-15 | Safety needle base locating structure of self-destruction injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498702.8U CN203370162U (en) | 2013-08-15 | 2013-08-15 | Safety needle base locating structure of self-destruction injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203370162U true CN203370162U (en) | 2014-01-01 |
Family
ID=49832720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320498702.8U Expired - Fee Related CN203370162U (en) | 2013-08-15 | 2013-08-15 | Safety needle base locating structure of self-destruction injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203370162U (en) |
-
2013
- 2013-08-15 CN CN201320498702.8U patent/CN203370162U/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 | ||
| ASS | Succession or assignment of patent right |
Owner name: LIAONING ZHONGYUAN MEDICAL INSTRUMENT CO., LTD. Free format text: FORMER OWNER: JIANG BO Effective date: 20150113 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 317500 TAIZHOU, ZHEJIANG PROVINCE TO: 112400 TIELING, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150113 Address after: 112400 Tieling City, Liaoning Province Xifeng County Public Village Industrial Park Patentee after: LIAONING ZHONGYUAN MEDICAL DEVICES Co.,Ltd. Address before: Taizhou City, Zhejiang province 317500 Wenling RuoHeng town red rose village A District No. 120 Patentee before: Jiang Bo |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20210815 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |