CN103239782A - Spring type safe self-destructive injector - Google Patents
Spring type safe self-destructive injector Download PDFInfo
- Publication number
- CN103239782A CN103239782A CN2013101738668A CN201310173866A CN103239782A CN 103239782 A CN103239782 A CN 103239782A CN 2013101738668 A CN2013101738668 A CN 2013101738668A CN 201310173866 A CN201310173866 A CN 201310173866A CN 103239782 A CN103239782 A CN 103239782A
- Authority
- CN
- China
- Prior art keywords
- collapsible
- core bar
- core rod
- snapping
- cassette
- 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.)
- Granted
Links
- 206010040007 Sense of oppression Diseases 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 8
- 239000007924 injection Substances 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 241000700605 Viruses Species 0.000 description 3
- 206010011409 Cross infection Diseases 0.000 description 2
- 206010029803 Nosocomial infection Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to a spring type safe self-destructive injector which comprises an injection needle, a needle holder, a sleeve and a core rod. A snapping ring is arranged on the inside of the lower portion of the needle holder. The core rod is of a hollow tubular structure, the upper portion of the core rod is a hole shrinkage tube section, a rubber plug is sleeved outside the hole shrinkage tube section and the upper portion of the core rod, and a snapping retractable spring seat is arranged on the upper portion of the inside of the core rod. The upper portion of the snapping retractable spring seat is arranged on the upper end surface of the core rod in a snapping mode, a spring is sleeved outside the lower portion of the snapping retractable spring seat, and a snapping protrusion is arranged at the upper end of the snapping retractable spring seat and matches with a fastener of the snapping ring. The needle holder is arranged on the upper portion of the inside of the sleeve through a switch type valve ring. When the injector is pulled off after the injection is finished, the core rod is further pushed, a supporting point supported on the upper end surface of the core rod shrinks and moves away from the upper end surface of the core rod under the action of the switch type valve ring, meanwhile, the snapping retractable spring seat with the needle holder and the injection needle move to a chamber of the core rod under the action of the spring, so that the purposes of self-destruction and safety are achieved.
Description
Technical field
The present invention relates to a kind of disposable syringe, can make draw point recoil to the interior spring type safety self-destruction syringe of injection tube after especially a kind of the use.
Background technology
Cause the cross infection of virus for fear of using antihygienic syringe, disposable syringe is widely used at medical field.Reuse in order to stop artificial recovery, people arrange self-desttruction equipment at disposable syringe.But,, causes common self-destruction syringe the cross infection of virus though preventing the repeated use of syringe to a certain extent, draw point exposes and makes discarded syringe produce many inconvenience in processes such as collection, transportation, processing but syringe uses the back, still might stab medical worker and other relevant personnel, cause the infection of virus and bacteria.
Chinese patent once disclosed multinomial steel needle retractable destructing safety formula syringe, but the characteristics of its structure are between needle stand and inside, injection tube upper end rebound spring to be set, after using described injector to inject, under the effect of spring, draw point is gone in the cavity of core bar together with needle stand by resilience, prevent that syringe from using the back because draw point exposes the phenomenon generation of stabbing the relevant personnel, reach purpose of safety.But, find that in practice there is following weak point in existing steel needle retractable destructing safety formula syringe: since between needle stand and the overcoat snap fit and under the effect of spring draw point gone in the cavity of core bar by resilience together with needle stand, only rely on the card bulge loop be arranged on needle stand and put and the frictional force between the card groove outward, both degrees of tightness cooperate and are difficult to control: when too tight, spring is difficult to spring into draw point in the cavity of core bar together with needle stand; When too loose, needle stand can bounce back automatically during injection, and injection work can't be carried out.
Summary of the invention:
The objective of the invention is to overcome the shortcoming of the above syringe, a kind of spring type safety self-destruction syringe of improved its dependable performance is provided.
The present invention, comprise entry needle and needle stand thereof, overcoat and the core bar that is positioned at overcoat, lower inside at needle stand is provided with snap ring, described core bar is hollow tubular structure, the lower end is provided with the core bar bonnet, top is the undergauge pipeline section, outside undergauge pipeline section and upper end, be with plug, is furnished with the collapsible spring base of cassette in the core bar inner and upper, the collapsible spring base of cassette is provided with the reducing diameter part that cooperates with described undergauge pipeline section, and the top of the collapsible spring base of cassette is fastened on the upper surface of core bar, is with spring in the bottom of the collapsible spring base of cassette, upper end at the collapsible spring base of cassette, it is protruding to be provided with card, blocks protruding and the snap ring needle stand bottom and is clasped, and described needle stand is arranged on the overcoat inner and upper by switching regulator valve circle, the periphery wall of described switching regulator valve circle and the inwall of overcoat are tight fit, Lower Half inboard at switching regulator valve circle is provided with cavity, on cavity, be provided with the on ﹠ off switch that is connected with switching regulator valve circle consubstantiality, the lower surface of described needle stand is supported on the described on ﹠ off switch.
The present invention, the mesopore of the external diameter of described needle stand and switching regulator valve circle is loose fit.
The present invention, top at the collapsible spring base of described cassette, be provided with collapsible supporter, collapsible supporter is positioned at the protruding below of described card, under normal circumstances, the effective width of collapsible supporter is greater than the diameter of the mesopore of switching regulator valve circle, and the lower end of collapsible supporter is supported on the upper surface of core bar; When collapsible supporter suffered oppression diametrically, the effective width of collapsible supporter was less than the diameter of core bar upper surface through hole.
The present invention, because needle stand is arranged on the overcoat inner and upper by switching regulator valve circle, and the inwall of the periphery wall of switching regulator valve circle and overcoat is tight fit, and the lower surface of needle stand is pushed up and is located on the described on ﹠ off switch, on the one hand, needle stand and entry needle thereof can be fixed on the overcoat inner and upper reliably; Aspect in addition, because the on ﹠ off switch of switching regulator valve circle is for can dial formula, that is: when core bar upwards promotes, owing to above core bar, be provided with the collapsible spring base of cassette, the top of the collapsible spring base of cassette is provided with collapsible supporter, on the one hand, collapsible supporter extruding on ﹠ off switch makes it shrink to cavity, because on ﹠ off switch shrinks to cavity, eliminated the supporting role of switching regulator valve circle to needle stand, meanwhile, the card convex clip of cassette is collapsible spring base upper end is buckled on the snap ring of needle stand bottom, aspect in addition, collapsible supporter is subjected to the extruding of switching regulator valve circle endoporus and shrinks, and the fulcrum that is supported on the core bar upper surface shrinks and breaks away from the core bar upper surface, at this moment, under the effect of spring, the collapsible spring base of cassette is sprung in the cavity of core bar together with needle stand and entry needle, and at this moment, syringe disintegrates and can't reuse, the entry needle of crossing with medicinal liquid and contact patients all is stored in the tube of core bar, reaches self-destruction, security purpose.
Description of drawings
Fig. 1-Fig. 5 is the structure principle chart of embodiment, and wherein, Fig. 1 is the structure principle chart of syringe, Fig. 2 is the structure chart of the collapsible spring base of cassette, Fig. 3 is the structural perspective of switching regulator valve circle, and Fig. 4 is the vertical view of switching regulator valve circle, and Fig. 5 is the A-A cutaway view of Fig. 4.
Among the figure, 1, sheath; 2, needle stand; 21, snap ring; 3, switching regulator valve circle; 31, cavity; 32, on ﹠ off switch; 33, mesopore; 4, plug; 5, the collapsible spring base of cassette; 51, card is protruding; 52, collapsible supporter; 53, reducing diameter part; 54, water shutoff bulge loop; 6, core bar; 61, undergauge pipeline section; 7, core print seat bonnet; 8, entry needle; 9, spring; 10, overcoat.
The specific embodiment
With reference to accompanying drawing, a kind of spring type safety self-destruction syringe, comprise entry needle 8 and needle stand 2 thereof, overcoat 10 and the core bar 6 that is positioned at overcoat, lower inside at needle stand 2 is provided with snap ring 21, described core bar 6 is hollow tubular structure, the lower end is provided with core bar bonnet 7, top is undergauge pipeline section 61, outside undergauge pipeline section 61 and upper end, be with plug 4, is furnished with the collapsible spring base 5 of cassette in core bar 6 inner and upper, cassette is collapsible, and spring base 5 is provided with the reducing diameter part 53 that cooperates with described undergauge pipeline section 61, on 53 ones of reducing diameter parts, is provided with water shutoff bulge loop 54, the top of cassette is collapsible spring base 5 is fastened on the upper surface of core bar 6, bottom at the collapsible spring base 5 of cassette is with spring 9, in the upper end of the collapsible spring base 5 of cassette, is provided with card protruding 51, below card protruding 51, be provided with collapsible supporter 52, under normal circumstances, the effective width of collapsible supporter 52 is greater than the diameter of the mesopore 33 of switching regulator valve circle 3, and the lower end of collapsible supporter 52 is supported on the upper surface of core bar; When collapsible supporter 52 suffers oppression diametrically, the effective width of collapsible supporter 52 is less than the diameter of core bar upper surface through hole, described card protruding 51 is clasped with the snap ring 21 of needle stand 2 bottoms, described needle stand 2 is arranged on overcoat 10 inner and upper by switching regulator valve circle 3, the periphery wall of described switching regulator valve circle 3 and the inwall of overcoat 10 are tight fit, Lower Half inboard at switching regulator valve circle 3, be provided with cavity 31, on cavity 31, be provided with the on ﹠ off switch 32 that is connected with switching regulator valve circle 3 consubstantialities, the lower surface of described needle stand 2 is supported on the described on ﹠ off switch 32.The mesopore 33 of the external diameter of described needle stand 2 and switching regulator valve circle 3 is loose fit.
Its using method and operation principle are as follows: when clinical use, take off needle guard 1, the using method of syringe extracts medicinal liquid routinely then, and also the using method of syringe is carried out injecting liquid drug routinely, and liquid medicine injection can be extracted syringe after finishing.Then, continue to advance core bar 6, make in core bar 6 continuation and move; Owing to move in the continuation of core bar 6, the collapsible supporter 52 of spring base 5 tops setting that cassette is collapsible, on the one hand, collapsible supporter 52 extruding on ﹠ off switches 32 make it shrink to cavity 31, because on ﹠ off switch 32 shrinks to cavity 31, eliminated the supporting role of 3 pairs of needle stands 2 of switching regulator valve circle, meanwhile, the card protruding 51 of cassette is collapsible spring base 3 upper ends is buckled on the snap ring 21 of needle stand 2 bottoms, aspect in addition, collapsible supporter 52 is subjected to the extruding of switching regulator valve circle 3 endoporus 33 and shrinks, the fulcrum that is supported on core bar 6 upper surfaces shrinks and disengaging core bar upper surface, at this moment, under the effect of spring 9, cassette is collapsible, and spring base 5 is sprung in the cavity of core bar 6 together with needle stand 2 and entry needle 8.At this moment, syringe disintegrates and can't reuse, and the entry needle of crossing with medicinal liquid and contact patients 8 all is stored in the tube of core bar 6, reaches self-destruction, purpose of safety.
Claims (3)
1. spring type safety self-destruction syringe, comprise entry needle (8) and needle stand (2) thereof, overcoat (10) and be positioned at the core bar (6) of overcoat, lower inside at needle stand (2) is provided with snap ring (21), described core bar (6) is hollow tubular structure, the lower end is provided with core bar bonnet (7), top is undergauge pipeline section (61), outside undergauge pipeline section (61) and upper end, be with plug (4), is furnished with the collapsible spring base of cassette (5) in core bar (6) inner and upper, the collapsible spring base of cassette (5) is provided with the reducing diameter part (53) that cooperates with described undergauge pipeline section (61), the top of the collapsible spring base of cassette (5) is fastened on the upper surface of core bar (6), be with spring (9) in the bottom of the collapsible spring base of cassette (5), upper end at the collapsible spring base of cassette (5), be provided with card protruding (51), the snap ring (21) that blocks protruding (51) and needle stand (2) bottom is clasped, it is characterized by: described needle stand (2) is arranged on overcoat (10) inner and upper by switching regulator valve circle (3), the inwall of the periphery wall of described switching regulator valve circle (3) and overcoat (10) is tight fit, Lower Half inboard at switching regulator valve circle (3), be provided with cavity (31), on cavity (31), be provided with the on ﹠ off switch (32) that is connected with switching regulator valve circle (3) consubstantiality, the lower surface of described needle stand (2) is supported on the described on ﹠ off switch (32).
2. spring type safety self-destruction syringe according to claim 1 is characterized by: the mesopore (33) of the external diameter of described needle stand (2) and switching regulator valve circle (3) is loose fit.
3. spring type safety self-destruction syringe according to claim 1 and 2, it is characterized by: on the top of the collapsible spring base of described cassette, be provided with collapsible supporter (52), collapsible supporter (52) is positioned at the below of described card protruding (51), under normal circumstances, the effective width of collapsible supporter (52) is greater than the diameter of the mesopore (33) of switching regulator valve circle (3), and the lower end of collapsible supporter (52) is supported on the upper surface of core bar; When collapsible supporter (52) when suffering oppression diametrically, the effective width of collapsible supporter (52) is less than the diameter of core bar upper surface through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173866.8A CN103239782B (en) | 2013-05-12 | 2013-05-12 | Spring type safe self-destructive injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173866.8A CN103239782B (en) | 2013-05-12 | 2013-05-12 | Spring type safe self-destructive injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103239782A true CN103239782A (en) | 2013-08-14 |
| CN103239782B CN103239782B (en) | 2014-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310173866.8A Active CN103239782B (en) | 2013-05-12 | 2013-05-12 | Spring type safe self-destructive injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103239782B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721325A (en) * | 2014-01-12 | 2014-04-16 | 广东海鸥医疗器械股份有限公司 | Automatic retractable safe syringe |
| WO2017084057A1 (en) * | 2015-11-19 | 2017-05-26 | 广东海鸥医疗器械股份有限公司 | Syringe |
| CN106860974A (en) * | 2017-04-14 | 2017-06-20 | 黄旭荣 | Segmented safety self-destroyed syringe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6706019B1 (en) * | 1998-09-25 | 2004-03-16 | David W. Parker | Hypodermic syringes |
| CN101274114A (en) * | 2008-02-04 | 2008-10-01 | 房东森 | Automatic retraction safety syringe |
| CN201375735Y (en) * | 2009-05-13 | 2010-01-06 | 罗绍基 | Spring type safe self-destruction syringe |
| CN203196095U (en) * | 2013-05-12 | 2013-09-18 | 广东海鸥医疗器械股份有限公司 | Spring type safe self-destroying injection syringe |
-
2013
- 2013-05-12 CN CN201310173866.8A patent/CN103239782B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6706019B1 (en) * | 1998-09-25 | 2004-03-16 | David W. Parker | Hypodermic syringes |
| CN101274114A (en) * | 2008-02-04 | 2008-10-01 | 房东森 | Automatic retraction safety syringe |
| CN201375735Y (en) * | 2009-05-13 | 2010-01-06 | 罗绍基 | Spring type safe self-destruction syringe |
| CN203196095U (en) * | 2013-05-12 | 2013-09-18 | 广东海鸥医疗器械股份有限公司 | Spring type safe self-destroying injection syringe |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721325A (en) * | 2014-01-12 | 2014-04-16 | 广东海鸥医疗器械股份有限公司 | Automatic retractable safe syringe |
| WO2017084057A1 (en) * | 2015-11-19 | 2017-05-26 | 广东海鸥医疗器械股份有限公司 | Syringe |
| US10420878B2 (en) | 2015-11-19 | 2019-09-24 | Guangdong Haiou Medical Apparatus Co., Ltd. | Syringe assembly |
| CN106860974A (en) * | 2017-04-14 | 2017-06-20 | 黄旭荣 | Segmented safety self-destroyed syringe |
| CN106860974B (en) * | 2017-04-14 | 2019-01-25 | 黄旭荣 | Segmented safety self-destroyed syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103239782B (en) | 2014-09-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A spring type safety self destructive syringe Effective date of registration: 20231229 Granted publication date: 20140903 Pledgee: Bank of China Limited Jieyang Puning Branch Pledgor: GUANGDONG HAIOU MEDICAL APPARATUS STOCK Co.,Ltd. Registration number: Y2023980075480 |