CN202191551U - Small needle seat stopping structure on needle barrel of disposable safe syringe - Google Patents
Small needle seat stopping structure on needle barrel of disposable safe syringe Download PDFInfo
- Publication number
- CN202191551U CN202191551U CN2011203129923U CN201120312992U CN202191551U CN 202191551 U CN202191551 U CN 202191551U CN 2011203129923 U CN2011203129923 U CN 2011203129923U CN 201120312992 U CN201120312992 U CN 201120312992U CN 202191551 U CN202191551 U CN 202191551U
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- China
- Prior art keywords
- needle stand
- needle seat
- syringe
- support claw
- stopping structure
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Abstract
The utility model discloses a small needle seat stopping structure on a needle barrel of a disposable safe syringe, which comprises the needle barrel and a needle seat. The needle seat consists of a large needle seat and a small needle seat fittingly arranged in the large needle seat, a small needle seat stopping structure, namely an elastic expanding claw, is arranged at the bottom of a mounting hole at the head of the needle barrel, the small needle seat stopping structure can be expanded under the action of the head of a mandrel, a barb is arranged on the lower portion of the inner side of the elastic expanding claw and is fastened with the bottom of the small needle seat, and a fastening surface, which is fastened with the bottom of the small needle seat, of the barb is an inclined surface which is obliquely downwards arranged from inside to outside. The small needle seat stopping structure is further improved according to a fitting surface structure between the barb of the elastic expanding claw and the small needle seat, a stopping effect of the elastic expanding claw to the small needle seat is strengthened, and the small needle seat is stopped from becoming invalid in advance.
Description
Technical field
The present invention relates to a kind of disposible safety syringe, particularly the little needle stand bit-stopping structure on the disposible safety syringe syringe.
Background technology
Before; The applicant applied for patent ZL200920305366.4; Name is called disposable needle point automatic retraction safety syringe, and is in second embodiment of this patent, as illustrated in fig. 1 and 2; Syringe 1 ' installing hole bottom be provided with under the effect of core bar head expansible little needle stand bit-stopping structure be elasticity support claw 11 '; Elasticity support claw 11 ' be provided with barb 111 ' engage with little needle stand 2 ' bottom in lower inside, the elasticity support claw 11 ' ramp structure that a gradient cooperates with the core bar beveled head is set in the bottom, and the relative core bar beveled head in ramp structure position certain distance that inwardly staggers.
In use; When core bar is not compressed to syringe 1 ' bottom; Elasticity support claw 11 ' barb 111 ' block little needle stand 2 ' bottom, make little needle stand 2 ' stop, guarantee that little needle stand 2 ' in injection process can be because of the excessive and big needle stand 3 of counteracting force ' disengaging phenomenon that contracts in taking place.And when injection completion core bar is compressed to the bottom; Because of the gradient of elasticity support claw ramp structure cooperates with the core bar beveled head; The relative core bar beveled head in ramp structure position certain distance that inwardly staggers simultaneously, the beveled head of core bar will force elasticity support claw 11 ' the bottom expand outwardly, and along with the further compression of core bar forces elasticity support claw 11 ' strut outwardly; Make barb 111 ' with the releasing that engages of little needle stand 2 ' bottom, guaranteed little needle stand 2 ' can normally bounce back.And in reality; Because of the snap-latch surface 4 of the barb 111 on the above bit-stopping structure elasticity support claw ' engage ' be a horizontal plane with little needle stand 2 ' bottom; Retroaction F ' the direction of barb 111 ' when little needle stand 2 ' acupuncture treatment, receive be said snap-latch surface 4 ' normal direction, promptly horizontal relatively snap-latch surface 4 ' vertically downward, at this moment; The counteracting force F ' of elasticity support claw 11 ' receive all be positioned at elasticity support claw 11 ' with syringe 1 ' junction point 12 ' the inboard; Under the effect of this counteracting force F ', the relative junction point 12 of elasticity support claw 11 ' meeting ' rotate outwardly and cause barb 111 ' with the disengaging that engages of little needle stand 2 ' bottom, the failure phenomenon of little needle stand 2 ' in advance appears.
Summary of the invention
To the problems referred to above; The present invention has designed the little needle stand bit-stopping structure on the disposible safety syringe syringe; It further improves to the mating surface structure between elasticity support claw barb and the little needle stand; Strengthened of the stop bit effect of elasticity support claw, stopped the generation that little needle stand shifts to an earlier date failure phenomenon little needle stand.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
Little needle stand bit-stopping structure on the disposible safety syringe syringe comprises syringe and needle stand, and wherein needle stand is made up of big needle stand and the little needle stand that is equipped with in big needle stand; The installing hole of said syringe head bottom is provided with that expansible little needle stand bit-stopping structure is the elasticity support claw under the effect of core bar head; The elasticity support claw is provided with barb in lower inside and engages with little needle stand bottom, it is characterized in that: the oblique outwardly inclined-plane that is provided with down in the snap-latch surface that said barb engages with little needle stand bottom is served as reasons.
The intersection point of extended line that the normal of above-mentioned snap-latch surface central spot extends backwards and elasticity support claw centrage is lower than the junction point of elasticity support claw and syringe connecting portion.
The snap-latch surface of barb and little needle stand bottom is the oblique from inside to outside inclined-plane that is provided with down on this utility model elasticity support claw; The counteracting force direction that receives little needle stand because of barb is all the time perpendicular to snap-latch surface; Make the direction of counteracting force be transformed into by outward oblique inwardly down, under the effect of this counteracting force, whole elasticity support claw is gathered inwardly and is tightly embraced little needle stand; Not only effectively strengthened of the stop bit effect of elasticity support claw, also stopped the generation that little needle stand shifts to an earlier date failure phenomenon simultaneously little needle stand.
At this; Be the effectiveness that guarantees that the elasticity support claw is gathered inwardly; The intersection point of extended line that the normal of snap-latch surface central spot extends backwards and elasticity support claw centrage is lower than the junction point of elasticity support claw and syringe connecting portion; Guarantee that promptly the extended line of making a concerted effort of counteracting force is positioned at the outside of said junction point, thereby make the elasticity support claw possess the trend of rotating all the time inwardly around junction point.
Description of drawings
The structure diagram of Fig. 1, existing snap-latch surface structure;
The partial enlarged drawing of A portion among Fig. 2, Fig. 1;
The structure diagram of Fig. 3, this utility model snap-latch surface structure;
The partial enlarged drawing of B portion among Fig. 4, Fig. 3.
The specific embodiment
Shown in Fig. 3 and 4, the little needle stand bit-stopping structure on the disposible safety syringe syringe comprises syringe 1 and needle stand, and wherein needle stand is made up of big needle stand 3 and the little needle stand 2 that is equipped with in big needle stand; The installing hole of said syringe 1 head bottom is provided with that expansible little needle stand bit-stopping structure is an elasticity support claw 11 under the effect of core bar head; Elasticity support claw 11 is provided with barb 111 in lower inside and engages with little needle stand 2 bottoms, the oblique outwardly inclined-plane that is provided with down in the snap-latch surface 4 that said barb 111 engages with little needle stand 2 bottoms is served as reasons.
In use; The counteracting force F direction that receives little needle stand 2 because of barb 111 is perpendicular to snap-latch surface 4, the oblique outwardly ramp structure that is provided with down of snap-latch surface 4 in this utility model, make the direction of counteracting force F be transformed into along the normal on inclined-plane by outside oblique inwardly down; Under the effect of this counteracting force F; Whole elasticity support claw 11 is gathered inwardly and is tightly embraced little needle stand 2, has not only effectively strengthened the stop bit effect of 11 pairs of little needle stands 2 of elasticity support claw, has also stopped the generation of failure phenomenon in advance of little needle stand 2 simultaneously.
At this; Be the effectiveness that guarantees that elasticity support claw 11 is gathered inwardly; The point of intersection S of extended line L1 that the normal of snap-latch surface 4 central spot extends backwards and elasticity support claw centre line L 2 is lower than the junction point 12 of elasticity support claw 11 and syringe 1 connecting portion; This structure guarantees that promptly the extended line of making a concerted effort of counteracting force F is positioned at the outside of said junction point 12, makes elasticity support claw 11 possess the trend of rotating around junction point 12 all the time inwardly.
To sum up, this utility model further improves to the mating surface structure between elasticity support claw barb 111 and the little needle stand 2, has strengthened the stop bit effect of 11 pairs of little needle stands 2 of elasticity support claw, has stopped the generation of failure phenomenon in advance of little needle stand 2.
Claims (2)
1. the little needle stand bit-stopping structure on the disposible safety syringe syringe comprises syringe and needle stand, and wherein needle stand is made up of big needle stand and the little needle stand that is equipped with in big needle stand; The installing hole of said syringe head bottom is provided with that expansible little needle stand bit-stopping structure is the elasticity support claw under the effect of core bar head; The elasticity support claw is provided with barb in lower inside and engages with little needle stand bottom, it is characterized in that: the oblique outwardly inclined-plane that is provided with down in the snap-latch surface that said barb engages with little needle stand bottom is served as reasons.
2. the little needle stand bit-stopping structure on the disposible safety syringe syringe as claimed in claim 1 is characterized in that: the intersection point of extended line that the normal of said snap-latch surface central spot extends backwards and elasticity support claw centrage is lower than the junction point of elasticity support claw and syringe connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203129923U CN202191551U (en) | 2011-08-25 | 2011-08-25 | Small needle seat stopping structure on needle barrel of disposable safe syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203129923U CN202191551U (en) | 2011-08-25 | 2011-08-25 | Small needle seat stopping structure on needle barrel of disposable safe syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202191551U true CN202191551U (en) | 2012-04-18 |
Family
ID=45946484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203129923U Expired - Fee Related CN202191551U (en) | 2011-08-25 | 2011-08-25 | Small needle seat stopping structure on needle barrel of disposable safe syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202191551U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604081A (en) * | 2020-12-21 | 2021-04-06 | 湖南平安医械科技有限公司 | Prefilled self-destruction syringe |
-
2011
- 2011-08-25 CN CN2011203129923U patent/CN202191551U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604081A (en) * | 2020-12-21 | 2021-04-06 | 湖南平安医械科技有限公司 | Prefilled self-destruction syringe |
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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: SHANGHAI SHUANGGE INDUSTRIAL CO., LTD. Free format text: FORMER OWNER: LI HUIHUI Effective date: 20140611 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 318020 TAIZHOU, ZHEJIANG PROVINCE TO: 200000 FENGXIAN DISTRICT, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140611 Address after: 200000 1888, Shanghai Hangzhou highway, Jianghai Economic Zone, Shanghai Patentee after: Double-Dove Industrial Co., Ltd. Address before: 318020 No. 888 Bridge Road, Huangyan District, Zhejiang, Taizhou Patentee before: Li Huihui |
|
| 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: 20141014 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141014 Address after: 201400 Shanghai City, Fengxian District Hangzhou Highway No. 1888 building Sixth Patentee after: SHANGHAI JUMIN BIOLOGICAL TECHNOLOGY CO., LTD. Address before: 201400 1888, Shanghai Hangzhou highway, Jianghai Economic Zone, Shanghai Patentee before: Double-Dove Industrial Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20160825 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |