CN103721325B - Automatic retracted safe syringe - Google Patents
Automatic retracted safe syringe Download PDFInfo
- Publication number
- CN103721325B CN103721325B CN201410013439.8A CN201410013439A CN103721325B CN 103721325 B CN103721325 B CN 103721325B CN 201410013439 A CN201410013439 A CN 201410013439A CN 103721325 B CN103721325 B CN 103721325B
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- China
- Prior art keywords
- core bar
- section
- pulling back
- overcoat
- spring base
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- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 8
- 239000003814 drug Substances 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 239000000284 extract Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a kind of automatic retracted safe syringe, comprise core bar assembly and overcoat assembly, described core bar assembly is by core bar, plug, spring and spring base composition, in the upper end of spring base, be provided with card convex portion, described overcoat assembly is by overcoat, needle stand, entry needle, pull back part and valve circle composition, in the bottom of valve circle, be provided with a make-up pawl, button pawl is buckled in the lower end of part of pulling back, in the bottom of pulling back part, be provided with the snap close ring cavity be clasped with described card convex portion, after liquid medicine injection terminates, the card convex portion of spring base upper end struts button pawl and inserts and pulls back in the snap close ring cavity of part bottom, spring base and part of pulling back link together, continue to promote core bar, until spring base is pushed up de-, part of pulling back is set back in the inner chamber of core bar under spring force, now, syringe disintegrates and cannot reuse, the entry needle crossed with medicinal liquid and contact patients is all stored in the cylinder of core bar, reach self-destruction, the object of safety.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, especially a kind of disposable automatic type syringe.
Background technology
The needle automatic retracting program of disposable automatic retracted safe syringe by pulling back on part; the pathophoresis that one side avoids syringe Reusability and causes; change the form of the artificial self-destruction of conventional security formula syringe in addition on the one hand; also provide a kind of safer form, protect medical personnel and avoid being injected pin scuffing or stabbing.
Current disposible safety syringe, what usually adopt is injected rear both hands to retract needle stand in overcoat, and this structure easily produces maloperation, also can again be released if promote core bar entry needle.Which results in a large amount of safety type dangerous.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of automatic injector is provided, its structure is simple, can not be excited because of maloperation, do not need both hands to start self-destruction program in whole process, syringe needle is effectively isolated, simultaneously, the part of its contact medicine is few, thus decreases the contaminated probability of medicine.
The present invention, comprise core bar assembly and overcoat assembly, described core bar assembly is by core bar, plug, spring and spring base composition, described core bar is hollow tubular structure, lower end is provided with core bar bonnet button bit, top is provided with undergauge pipeline section, plug is had at undergauge pipeline section and upper end overcoat, spring base is furnished with in core bar inner upper, the first bulge loop and the second bulge loop is provided with in the middle and upper part of spring base, first bulge loop is fastened in the upper port of hollow tubular structural core bar, the endoporus of the second bulge loop and core bar undergauge pipeline section is sealed and matched, described spring-compressed is set between the lower convex ring of spring base and core bar undergauge pipeline section, in the upper end of spring base, be provided with card convex portion, described overcoat assembly is made up of overcoat, needle stand, entry needle, pull back part and valve circle, entry needle sealing is fixed on the middle and upper part of part of pulling back, in needle stand, be provided with logical core bore, logical core bore comprises aperture section and macropore section, and part of pulling back to be built in the logical core bore of needle stand and to coordinate with logical core bore is dynamic, the top of valve circle is cylindrical structure, the macropore section tight fit of its periphery wall and needle stand bottom, the endoporus of valve circle coordinates with the periphery wall of part of pulling back is dynamic, in the bottom of valve circle, be provided with a make-up pawl, button pawl is buckled in the lower end of part of pulling back, in the bottom of pulling back part, be provided with the snap close ring cavity be clasped with described card convex portion, the lower surface of through part of pulling back below described snap close ring cavity, being communicated with entry needle of snap close ring cavity above.
The present invention, at the periphery wall of described needle stand, be provided with the first bulge loop and the second bulge loop, described second bulge loop coordinates with the upper surface of overcoat is spacing, and the interior scrobicular ring buckle on described first bulge loop and overcoat top is sealed and matched.
The present invention, described in part of pulling back comprise path section and large footpath section, path section coordinates with the aperture section of needle stand is dynamic, and the large footpath section diameter of part of pulling back is greater than the diameter of needle stand aperture section, and the large footpath section of part of pulling back is moved with the endoporus of valve circle and coordinated.
The present invention, in the bottom of described valve circle, is provided with a pair expanding arc section, and expanding arc section and the alternate setting of described button pawl, in the upper inside wall of described overcoat, be provided with necking down level rank, described expanding arc section is buckled on necking down level rank.
The present invention, safer than prior art, syringe is not easy to be started self-destruction program by exciting in advance.Syringe products accessory structure is more simple, and production is more prone to, and product accessories adopts the form of direct demold, not easily produces the injection defect such as burr, overlap, effectively reduces the impact of working of plastics on medicinal liquid.
Accompanying drawing explanation
Fig. 1 is the integrally-built schematic cross-sectional view of embodiment; Fig. 2 is the structural principle sectional view of core bar assembly; Fig. 3 is the structural principle sectional view of overcoat assembly; Fig. 4 is the structure sectional view of core bar; Fig. 5 is the structural front view of spring; Fig. 6 is the structure sectional view of plug; Fig. 7 is the structure sectional view of spring base; Fig. 8 is the structure sectional view of overcoat; Fig. 9-1-Fig. 9-4 is the structure chart of switch valve circle; Figure 10 is the structure sectional view of needle stand; Figure 11 is the structure sectional view of part and entry needle of pulling back; Figure 12 is state sectional view before the present embodiment uses; Figure 13 is state sectional view during the present embodiment uses; Figure 14 is the state sectional view that the present embodiment has injected that valve circle is opened in rear self-destruction; Figure 15 is that the present embodiment has been injected core bar when rear syringe extracts human body and pushed away forward the state sectional view of automatic retracted.
In figure, 1, overcoat 2, core bar 3, core bar bonnet button bit 4, in overcoat spacing 5, spring base 6, spring 7, spring base first bulge loop 8, spring base card convex portion 9, valve circle 10, needle stand 11, entry needle 12, to pull back part 13, snap close ring cavity 14, plug 15, core bar upper port 16, spring base second bulge loop 17, overcoat needle stand button bit 18, needle stand first bulge loop 19, button pawl 20, spring base opens valve circle position 21, undergauge pipeline section 22, needle stand second bulge loop 23, lower convex ring 24, aperture section 25, macropore section 26, path section 27, large footpath section 28, necking down level rank 29, expanding arc section.
Detailed description of the invention
With reference to accompanying drawing, a kind of automatic retracted safe syringe, comprises core bar assembly and overcoat assembly.Described core bar assembly is by core bar 2, plug 14, spring 6 and spring base 5 form, described core bar 2 is hollow tubular structure, lower end is provided with core bar bonnet button bit 3, top is provided with undergauge pipeline section 21, plug 14 is had at undergauge pipeline section 21 and upper end overcoat, spring base 5 is furnished with in core bar 2 inner upper, the middle and upper part of spring base 5 is provided with the first bulge loop 7 and the second bulge loop 16, first bulge loop 7 is fastened in the upper port 15 of hollow tubular structural core bar 2, second bulge loop 16 is sealed and matched with the endoporus of core bar undergauge pipeline section 21, described spring 6 wedging ring is located between the lower convex ring 23 of spring base 5 and core bar 2 undergauge pipeline section 21, in the upper end of spring base 5, be provided with card convex portion 8, described overcoat assembly is made up of overcoat 1, needle stand 10, entry needle 11, pull back part 12 and valve circle 9, entry needle 11 sealing is fixed on the middle and upper part of part 12 of pulling back, logical core bore is provided with in needle stand 10, logical core bore comprises aperture section 24 and macropore section 25, and part 12 of pulling back to be built in the logical core bore of needle stand 10 and to coordinate with logical core bore is dynamic, the top of valve circle 9 is cylindrical structure, macropore section 25 tight fit of its periphery wall and needle stand 10 bottom, the endoporus of valve circle 9 coordinates with the periphery wall of part 12 of pulling back is dynamic, in the bottom of valve circle 9, be provided with a make-up pawl 19, button pawl 19 is buckled in the lower end of part 12 of pulling back, in the bottom of pulling back part 12, be provided with the snap close ring cavity 13 be clasped with described card convex portion 8, the lower surface of through part 12 of pulling back below described snap close ring cavity 13, being communicated with entry needle 11 of snap close ring cavity 13 above.At the periphery wall of described needle stand 10, be provided with the first bulge loop 18 and the second bulge loop 22, described second bulge loop 22 coordinates with the upper surface of overcoat 1 is spacing, and described first bulge loop 18 is sealed and matched with interior scrobicular ring 17 buckle on overcoat 1 top.Described part 12 of pulling back comprises path section 26 and large footpath section 27, and path section 26 coordinates with the aperture section 24 of needle stand is dynamic, and large footpath section 27 diameter of part 12 of pulling back is greater than the diameter of needle stand aperture section 24, and the large footpath section 27 of part 12 of pulling back coordinates with the endoporus of valve circle 9 is dynamic.In the bottom of described valve circle 9, be provided with a pair expanding arc section 29, expanding arc section 29 and the alternate setting of described button pawl 19, in the upper inside wall of described overcoat 1, be provided with necking down level rank 28, described expanding arc section 29 is buckled on necking down level rank 28.
Its assemble sequence is: (1) overcoat general assembly: part 12 of pulling back loads in switch valve circle 9, then is loaded the logical core bore of needle stand 10, is then pressed into overcoat head; (2) core bar general assembly: spring base 5 loads in spring 6, then put it in core bar 2, with frock press-in, make the first bulge loop 7 of spring base 5 be stuck in the upper port 15 of core bar 2, then load plug 14; (3) core bar assembly is loaded overcoat assembly.
Its using method and operation principle as follows: (1) with reference to Figure 12, when Clinical practice, opens packaging, takes out syringe, and (2), with reference to Figure 13, the using method of syringe extracts medicinal liquid routinely, and also the using method of syringe carries out injecting liquid drug routinely, (3), with reference to Figure 14, after liquid medicine injection terminates, the card convex portion 8 of spring base 5 upper end struts button pawl 19 and inserts and pulls back in the snap close ring cavity 13 of part 12 bottom, drains medicinal liquid, now, can extract syringe, (4) with reference to Figure 15, after extracting syringe, continue to promote core bar 2, plug 14 is compressed, the card convex portion 8 of spring base 5 upper end is withstood can not continue to move up, now, spring base 5 can only move to the inner chamber of core bar 2, until the upper port 15 that the first bulge loop 7 of spring base 5 departs from core bar 2 enters in the chamber cylinder of core bar 2, now, spring base 5 is de-by top, part 12 of pulling back is set back in the inner chamber of core bar 2 under spring force, core bar 2 is also pushed into the inside at overcoat 1, now, syringe disintegrates and cannot reuse, the entry needle 11 crossed with medicinal liquid and contact patients is all stored in the cylinder of core bar 2, reach self-destruction, the object of safety.
Claims (3)
1. an automatic retracted safe syringe, comprise core bar assembly and overcoat assembly, it is characterized in that: described core bar assembly is by core bar (2), plug (14), spring (6) and spring base (5) composition, described core bar (2) is hollow tubular structure, lower end is provided with core bar bonnet button bit (3), top is provided with undergauge pipeline section (21), plug (14) is had at undergauge pipeline section (21) and upper end overcoat, spring base (5) is furnished with in core bar (2) inner upper, the first bulge loop (7) and the second bulge loop (16) is provided with in the middle and upper part of spring base (5), first bulge loop (7) is fastened in the upper port (15) of hollow tubular structural core bar (2), second bulge loop (16) is sealed and matched with the endoporus of core bar undergauge pipeline section (21), described spring (6) wedging ring is located between the lower convex ring (23) of spring base (5) and core bar (2) undergauge pipeline section (21), in the upper end of spring base (5), be provided with card convex portion (8), described overcoat assembly is made up of overcoat (1), needle stand (10), entry needle (11), part of pulling back (12) and valve circle (9), entry needle (11) sealing is fixed on the middle and upper part of part of pulling back (12), logical core bore is provided with in needle stand (10), logical core bore comprises aperture section (24) and macropore section (25), and part of pulling back (12) to be built in the logical core bore of needle stand (10) and to coordinate with logical core bore is dynamic, the top of valve circle (9) is cylindrical structure, macropore section (25) tight fit of its periphery wall and needle stand (10) bottom, the endoporus of valve circle (9) coordinates with the periphery wall of part of pulling back (12) is dynamic, in the bottom of valve circle (9), be provided with a make-up pawl (19), button pawl (19) is buckled in the lower end of part of pulling back (12), in the bottom of part of pulling back (12), be provided with the snap close ring cavity (13) be clasped with described card convex portion (8), the lower surface of through part of pulling back (12) below described snap close ring cavity (13), being communicated with entry needle (11) above of snap close ring cavity (13), in the bottom of described valve circle (9), be provided with a pair expanding arc section (29), expanding arc section (29) and the alternate setting of described button pawl (19), in the upper inside wall of described overcoat (1), be provided with necking down level rank (28), described expanding arc section (29) is buckled on necking down level rank (28).
2. automatic retracted safe syringe according to claim 1, it is characterized in that: at the periphery wall of described needle stand (10), be provided with the first bulge loop (18) and the second bulge loop (22), described second bulge loop (22) coordinates with the upper surface of overcoat (1) is spacing, and described first bulge loop (18) is sealed and matched with interior scrobicular ring (17) buckle on overcoat (1) top.
3. automatic retracted safe syringe according to claim 1, it is characterized in that: described in part (12) of pulling back comprise path section (26) and large footpath section (27), path section (26) coordinates with the aperture section (24) of needle stand is dynamic, large footpath section (27) diameter of part (12) of pulling back is greater than the diameter of needle stand aperture section (24), and large footpath section (27) of part of pulling back (12) coordinates with the endoporus of valve circle (9) is dynamic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013439.8A CN103721325B (en) | 2014-01-12 | 2014-01-12 | Automatic retracted safe syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013439.8A CN103721325B (en) | 2014-01-12 | 2014-01-12 | Automatic retracted safe syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103721325A CN103721325A (en) | 2014-04-16 |
| CN103721325B true CN103721325B (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410013439.8A Active CN103721325B (en) | 2014-01-12 | 2014-01-12 | Automatic retracted safe syringe |
Country Status (1)
| Country | Link |
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| CN (1) | CN103721325B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10420878B2 (en) * | 2015-11-19 | 2019-09-24 | Guangdong Haiou Medical Apparatus Co., Ltd. | Syringe assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6706019B1 (en) * | 1998-09-25 | 2004-03-16 | David W. Parker | Hypodermic syringes |
| CN201492764U (en) * | 2009-06-30 | 2010-06-02 | 李慧慧 | Disposable needle tip automatic retraction safety syringe |
| CN201564908U (en) * | 2009-12-17 | 2010-09-01 | 李慧慧 | Locking structure of disposable safe syringe |
| CN201939825U (en) * | 2010-12-24 | 2011-08-24 | 江苏苏云医疗器材有限公司 | Automatically-retractive safe injector |
| CN202052160U (en) * | 2011-03-12 | 2011-11-30 | 徐昊华 | Disposable safe syringe capable of retracting automatically with replaceable syringe needle |
| CN203647812U (en) * | 2014-01-12 | 2014-06-18 | 广东海鸥医疗器械股份有限公司 | Automatic retraction safety injector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103239782B (en) * | 2013-05-12 | 2014-09-03 | 广东海鸥医疗器械股份有限公司 | Spring type safe self-destructive injector |
-
2014
- 2014-01-12 CN CN201410013439.8A patent/CN103721325B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6706019B1 (en) * | 1998-09-25 | 2004-03-16 | David W. Parker | Hypodermic syringes |
| CN201492764U (en) * | 2009-06-30 | 2010-06-02 | 李慧慧 | Disposable needle tip automatic retraction safety syringe |
| CN201564908U (en) * | 2009-12-17 | 2010-09-01 | 李慧慧 | Locking structure of disposable safe syringe |
| CN201939825U (en) * | 2010-12-24 | 2011-08-24 | 江苏苏云医疗器材有限公司 | Automatically-retractive safe injector |
| CN202052160U (en) * | 2011-03-12 | 2011-11-30 | 徐昊华 | Disposable safe syringe capable of retracting automatically with replaceable syringe needle |
| CN203647812U (en) * | 2014-01-12 | 2014-06-18 | 广东海鸥医疗器械股份有限公司 | Automatic retraction safety injector |
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| Publication number | Publication date |
|---|---|
| CN103721325A (en) | 2014-04-16 |
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Denomination of invention: Automatic retractable safety syringe Effective date of registration: 20231229 Granted publication date: 20150902 Pledgee: Bank of China Limited Jieyang Puning Branch Pledgor: GUANGDONG HAIOU MEDICAL APPARATUS STOCK Co.,Ltd. Registration number: Y2023980075480 |