CN203989296U - Safety self-destructing insulin syringe - Google Patents
Safety self-destructing insulin syringe Download PDFInfo
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- CN203989296U CN203989296U CN201420478340.0U CN201420478340U CN203989296U CN 203989296 U CN203989296 U CN 203989296U CN 201420478340 U CN201420478340 U CN 201420478340U CN 203989296 U CN203989296 U CN 203989296U
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- China
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- needle stand
- syringe
- core bar
- safety self
- elasticity
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Abstract
The utility model discloses a kind of safety self-destructing insulin syringe, belong to injector technology field, aim to provide a kind of simple in structure, with low cost, processing is simple, good operating stability and high performance safety self-destructing insulin syringe.Its technical scheme is as follows: this syringe includes syringe, in described syringe, is equipped with core bar, and syringe head threads is connected with the first needle stand, is provided with the second needle stand at the head of described core bar, and described the second needle stand can be arranged in described the first needle stand; In described the second needle stand, be provided with engaging protrusion; Described core bar inside is formed with intercommunicating pore, and described intercommunicating pore inside is provided with elasticity reset device, and described elasticity reset device is connected with described the second needle stand; In described installing hole, be provided with the second needle stand stop bit mechanism that can strut under the pressure-acting of described core bar, described the second needle stand stop bit mechanism includes elasticity support claw, and described elasticity support claw inner side is formed with barb, and described barb can engage with described the second needle stand.
Description
Technical field
This utility model relates to injector technology field, particularly relates to a kind of safety self-destructing insulin syringe.
Background technology
Safety self-destructing syringe is can prevent reusable disposable syringe product after using, kind is various, after injection, rely on craft or mechanical forces, push rod can not be extracted out in syringe, reach self-locking, or the sealing property of piston is destroyed, or the push rod of syringe can be pushed off, finally reach the object that prevents recycling.
In prior art, in the Chinese invention patent prospectus that is 200710067311.X in the patent No., a kind of self-destroying insulin injector is disclosed, comprise syringe, push rod and plug, the rear end of described syringe is provided with diameter-increasing portion, in this augmenting portion, be provided with a self-destructor, it is characterized in that: described self-destructor is made up of retaining ring and support ring, described retaining ring is supported fixing by support ring, described retaining ring upper end is provided with the elastic pawl of gathering to center, lower end is provided with elasticity support claw, correspondingly syringe inwall is provided with the groove that elasticity support claw embeds, on push rod, establish the frustum fastening with elastic pawl.From above technical scheme: self-destructor is arranged on the rear end of syringe, can not be subject to the restriction that syringe front inner diameter is less, retaining ring and support ring cooperatively interact, before push rod, push back while drawing, retaining ring can not move, make that self-destructor is more reliable and secure, more reasonable structure, and mould offer simply, assemble more convenient, liquor residue amount is low.
But; adopt the self-destroying insulin injector in above-mentioned patent; syringe needle in use often can occur to be excited too early or excites not exclusively or the phenomenon of leakage; in addition; in above-mentioned patent and prior art, common self-destroying insulin injector needs often to destroy thin-wall construction and realizes self-destruction, or destroys interference fit and make needle retractable.These structures are larger to performance impacts such as syringe evocatory, needle stand release power, core bar pinning force and sealings, and very strict to manufacturing technique requirent, not only increased cost, also have a strong impact on the job stability of syringe.
Utility model content
Technical problem to be solved in the utility model be provide for the above-mentioned state of the art a kind of simple in structure, with low cost, processing is simple, good operating stability and high performance safety self-destructing insulin syringe.
For achieving the above object, this utility model provides following technical scheme:
A kind of safety self-destructing insulin syringe, include the syringe of hollow, wherein, described syringe head offers installing hole, described installing hole is connected by a transition inclined-plane with the endoporus of described syringe, in described syringe, be equipped with core bar, described core bar can slide under applied external force drives in described syringe;
In described installing hole, be threaded connection and be fixed with the first needle stand, be provided with the second needle stand at the head of described core bar, and described the second needle stand can be arranged in described the first needle stand;
Described the second needle stand is provided with endoporus, described endoporus front portion is tiny through hole, in described tiny through hole, entry needle is installed, described endoporus rear portion comprises transitional pore section and connecting hole section from front to back successively, and the internal diameter of described transitional pore section is less than the internal diameter of described connecting hole section, in described connecting hole section, be provided with engaging protrusion;
Described core bar inside is formed with intercommunicating pore, and described intercommunicating pore inside is provided with elasticity reset device, and described elasticity reset device is connected with described the second needle stand;
In described installing hole, be provided with the second needle stand stop bit mechanism that can strut under the pressure-acting of described core bar, described the second needle stand stop bit mechanism includes elasticity support claw, and described elasticity support claw inner side is formed with barb, and described barb can engage with described the second needle stand.
As the improvement of above-mentioned safety self-destructing insulin syringe in this utility model, described core bar head is provided with plug, and described plug is configured as conical structure, and described elasticity jaw inner side is configured as the ramp structure suitable with described plug shape.
As the further improvement of above-mentioned safety self-destructing insulin syringe in this utility model, described elasticity reset device includes spring fixed seat and Compress Spring, described spring fixed seat top is fixed with flat square structure, on described flat square structure, be formed with circular cone inclined-plane, described circular cone is arranged with snap ring on inclined-plane, described snap ring is by described cone inclined towards outer lug, and the external diameter of described snap ring is less than the endoporus of described the second needle stand connecting hole section and is greater than the internal diameter of engaging protrusion in described connecting hole section;
On described spring fixed seat, be also fixed with described Compress Spring.
As above-mentioned safety self-destructing insulin syringe in this utility model preferably, on described spring fixed seat, be formed with the gear platform by described spring fixed seat outwardly convex, described Compress Spring one end is fixed on gear platform, and the other end is connected on described the second needle stand.
As above-mentioned safety self-destructing insulin syringe in this utility model further preferably, described core bar afterbody is provided with by hands, described in press hands described intercommunicating pore sealed.
Compared with prior art, the utility model has the advantage of: this safety self-destructing insulin syringe is by bit-stopping structure and snap-in structure are set, realize needle tip retracts self-destruction, in the time that core bar is not compressed to syringe bottom, the barb of elasticity support claw blocks the second needle stand bottom, make the second needle stand stop, thereby guaranteed that the second needle stand can not depart from and inside contract phenomenon with the first needle stand because counteracting force is excessive in injection process.And after having injected, when continuation pushing core bar is compressed to syringe bottom, because the gradient of ramp structure coordinates with core bar beveled head, the simultaneously relative core bar beveled head in ramp structure position certain distance that inwardly staggers, the beveled head of core bar will force the bottom of elasticity support claw to be expanded outwardly, and outwards strut along with the further compression of core bar forces elasticity support claw, making the releasing that engages of barb and the second needle stand, the restoring force of recycling Compress Spring retracts the second needle stand and entry needle in core bar.By this design, make safety self-destructing insulin syringe of the present utility model have simple in structure, with low cost, processing is simple, good operating stability and high performance advantage.
Brief description of the drawings
Fig. 1 is the structural representation of safety self-destructing insulin syringe in this utility model embodiment;
Fig. 2 be embodiment illustrated in fig. 1 in the matching relationship schematic diagram of flat square structure and the second needle stand stop bit mechanism;
Fig. 3 be embodiment illustrated in fig. 1 in the structural representation of the second needle stand and elasticity reset device.
Reference numeral:
1, syringe; 1.1, installing hole; 1.2, endoporus; 1.3, transition inclined-plane; 2, core bar; 2.1, intercommunicating pore; 2.2, plug; 3, the first needle stand; 4, the second needle stand; 4.1, endoporus; 4.1.1, tiny through hole; 4.1.2, transitional pore section; 4.1.3, connecting hole section; 5, entry needle; 6, elasticity reset device; 6.1, spring fixed seat; 6.1.1, gear platform; 6.2, Compress Spring; 6.1.1, gear platform; 6.2, Compress Spring; 7, flat square structure; 7.1, circular cone inclined-plane; 7.2, snap ring; 8, the second needle stand stop bit mechanism; 8.1, elasticity support claw; 8.2, barb; 9, press hands.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment is described in further detail this utility model.
As shown in Figure 1, the present embodiment is a kind of safety self-destructing insulin syringe, include the syringe 1 of hollow, described syringe head offers installing hole 1.1, described installing hole is connected by a transition inclined-plane 1.3 with the endoporus 1.2 of described syringe, in described syringe, be equipped with core bar 2, described core bar 2 can slide under applied external force drives in the endoporus of described syringe 1;
In described installing hole, be threaded connection and be fixed with the first needle stand 3, be provided with the second needle stand 4 at the head of described core bar 2, and described the second needle stand 4 can be arranged in described the first needle stand 3;
Described the second needle stand 4 is provided with endoporus 4.1, described endoporus front portion is tiny through hole 4.1.1, in described tiny through hole, entry needle 5 is installed, described endoporus rear portion comprises transitional pore section 4.1.2 and connecting hole section 4.1.3 from front to back successively, and the internal diameter of described transitional pore section is less than the internal diameter of described connecting hole section, in described connecting hole section, be provided with engaging protrusion;
Described core bar inside is formed with intercommunicating pore 2.1, and described intercommunicating pore inside is provided with elasticity reset device 6, and described elasticity reset device 6 is connected with described the second needle stand 4;
As shown in Figures 2 and 3, described elasticity reset device 6 includes spring fixed seat 6.1 and Compress Spring 6.2, described spring fixed seat top is fixed with flat square structure 7, on described flat square structure, be formed with circular cone inclined-plane 7.1, described circular cone is arranged with snap ring 7.2 on inclined-plane, described snap ring is by described cone inclined towards outer lug, and the external diameter of described snap ring is less than the endoporus of described the second needle stand connecting hole section and is greater than the internal diameter of engaging protrusion in described connecting hole section;
On described spring fixed seat, be also fixed with described Compress Spring 6.2, concrete, on described spring fixed seat, be formed with the gear platform 6.1.1 by described spring fixed seat outwardly convex, it is upper that described Compress Spring one end is fixed on gear platform 6.1.1, and the other end is connected on described the second needle stand 4.
In described installing hole, be provided with the second needle stand stop bit mechanism 8 that can strut under the pressure-acting of described core bar, described the second needle stand stop bit mechanism includes elasticity support claw 8.1, described elasticity support claw inner side is formed with barb 8.2, and described barb can engage with described the second needle stand.
Again as shown in Figure 1, described core bar 2 heads are provided with plug 2.2, and described plug is configured as conical structure, and described elasticity jaw inner side is configured as the ramp structure suitable with described plug shape.
Described core bar afterbody is provided with by hands 9, described in press hands described intercommunicating pore sealed.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under this utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under this utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a safety self-destructing insulin syringe, include the syringe of hollow, it is characterized in that: described syringe head offers installing hole, described installing hole is connected by a transition inclined-plane with the endoporus of described syringe, in described syringe, be equipped with core bar, described core bar can slide under applied external force drives in described syringe;
In described installing hole, be threaded connection and be fixed with the first needle stand, be provided with the second needle stand at the head of described core bar, and described the second needle stand can be arranged in described the first needle stand;
Described the second needle stand is provided with endoporus, described endoporus front portion is tiny through hole, in described tiny through hole, entry needle is installed, described endoporus rear portion comprises transitional pore section and connecting hole section from front to back successively, and the internal diameter of described transitional pore section is less than the internal diameter of described connecting hole section, in described connecting hole section, be provided with engaging protrusion;
Described core bar inside is formed with intercommunicating pore, and described intercommunicating pore inside is provided with elasticity reset device, and described elasticity reset device is connected with described the second needle stand;
In described installing hole, be provided with the second needle stand stop bit mechanism that can strut under the pressure-acting of described core bar, described the second needle stand stop bit mechanism includes elasticity support claw, and described elasticity support claw inner side is formed with barb, and described barb can engage with described the second needle stand.
2. safety self-destructing insulin syringe according to claim 1, is characterized in that: described core bar head is provided with plug, and described plug is configured as conical structure, and described elasticity jaw inner side is configured as the ramp structure suitable with described plug shape.
3. safety self-destructing insulin syringe according to claim 1 and 2, it is characterized in that: described elasticity reset device includes spring fixed seat and Compress Spring, described spring fixed seat top is fixed with flat square structure, on described flat square structure, be formed with circular cone inclined-plane, described circular cone is arranged with snap ring on inclined-plane, described snap ring is by described cone inclined towards outer lug, and the external diameter of described snap ring is less than the endoporus of described the second needle stand connecting hole section and is greater than the internal diameter of engaging protrusion in described connecting hole section;
On described spring fixed seat, be also fixed with described Compress Spring.
4. safety self-destructing insulin syringe according to claim 3, it is characterized in that: on described spring fixed seat, be formed with the gear platform by described spring fixed seat outwardly convex, described Compress Spring one end is fixed on gear platform, and the other end is connected on described the second needle stand.
5. safety self-destructing insulin syringe according to claim 4, is characterized in that: described core bar afterbody is provided with by hands, described in press hands described intercommunicating pore sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478340.0U CN203989296U (en) | 2014-08-22 | 2014-08-22 | Safety self-destructing insulin syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478340.0U CN203989296U (en) | 2014-08-22 | 2014-08-22 | Safety self-destructing insulin syringe |
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| Publication Number | Publication Date |
|---|---|
| CN203989296U true CN203989296U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420478340.0U Active CN203989296U (en) | 2014-08-22 | 2014-08-22 | Safety self-destructing insulin syringe |
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| CN (1) | CN203989296U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107405459A (en) * | 2015-03-27 | 2017-11-28 | 泰尔茂株式会社 | Injection needle assembly and medication injection device |
| CN109701115A (en) * | 2018-11-30 | 2019-05-03 | 衡刚 | A kind of automatic self-destruction syringe |
| CN112604081A (en) * | 2020-12-21 | 2021-04-06 | 湖南平安医械科技有限公司 | Prefilled self-destruction syringe |
-
2014
- 2014-08-22 CN CN201420478340.0U patent/CN203989296U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107405459A (en) * | 2015-03-27 | 2017-11-28 | 泰尔茂株式会社 | Injection needle assembly and medication injection device |
| CN109701115A (en) * | 2018-11-30 | 2019-05-03 | 衡刚 | A kind of automatic self-destruction syringe |
| 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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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 246400 Anqing, Taihu Province Economic Development Zone, Guanyin Road, No. 2, No. Patentee after: Hongyu Anhui Wuzhou medical instrument Limited by Share Ltd Address before: 246400 Anqing, Taihu Province Economic Development Zone, Guanyin Road, No. 2, No. Patentee before: ANHUI HONGYU WUZHOU MEDICAL EQUIPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |