CN101850141A - Safe injector - Google Patents
Safe injector Download PDFInfo
- Publication number
- CN101850141A CN101850141A CN 200910048684 CN200910048684A CN101850141A CN 101850141 A CN101850141 A CN 101850141A CN 200910048684 CN200910048684 CN 200910048684 CN 200910048684 A CN200910048684 A CN 200910048684A CN 101850141 A CN101850141 A CN 101850141A
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- Prior art keywords
- safety
- needle
- needle holder
- ring body
- safely
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Abstract
The invention discloses a safe injector, which is characterized in that the end part of a core bar is provided with a safe pull-back lock post body, the outer wall of the safe pull-back post body is sequentially provided with an upper limit locking ring and a lower limit locking ring from the top to the bottom. A cylinder neck at the end part of a cylinder is internally and sequentially provided with an upper safe pull-back needle head seat and a lower pull-back base from the top to the bottom, the upper safe pull-back needle head seat and the lower safe pull-back base are both in circular shapes, and the safe pull-back lock post body can penetrate through the central positions of the upper safe pull-back needle head seat and the lower safe pull-back base. The safe injector has reasonable integral structure, simple operation, no unnecessary step and very good practicability and safety in practical use, can be operated by a single hand, can be assembled in a large scale automatically and has obvious substantial characteristic and remarkable advancement compared with the prior art.
Description
Technical field:
The present invention relates to technical field of medical, a kind of specifically have needle holder locking the pull back safety injector of effect, particularly its mechanical connecting structure.
Background technology:
Documents, the patent No.: 01113404.6, patentee: money E-TEN Corp; The Lu Yi people, notification number: CN1390610, this case discloses a kind of " high-safety injector with withdrawn needle ", and it is made up of needle body, needle stand, needle body collecting pipe, syringe and plunger, is characterized in: needle body is made of draw point and plastic connecting body; Needle stand has the liquid flow hole of two passages, has the corpusculum on several corpusculum grooves and the needle body to closely cooperate around in the needle body hole, has fixedly needle body and make its retraction effect after needle body ruptures; Needle body collecting pipe front end is provided with the circular rotation disc of two liquid flow holes, and its center is needle body retraction hole; The syringe front end has a syringe shroud, and tail end has the syringe lid; The plunger front end has pushing plate, and there is plunger handle the rear end, and its center is a sleeve pipe, and there is a pair of flank the center sleeve both sides.
Though can realize safe effect in theory, there is following shortcoming in existing safety injector structure more complicated: 1, complex structure, die sinking cost are higher, and certain structures can't be carried out die sinking at all; 2, product working stability performance is relatively poor.
So still need the prior art content is further improved.
Summary of the invention:
The object of the present invention is to provide a kind of safety injector, it adopts the tight structure of pulling back of locking of needle holder, and the job stability height has overcome the shortcoming and defect that exists in the prior art.
To achieve these goals, technical scheme of the present invention is: a kind of safety injector, it mainly comprises cylindrical shell, cylindrical shell is provided with core bar, the core bar place is socketed with plug, be provided with needle holder in the tube neck of cylindrical shell, the needle holder end is provided with needle tubing, it is characterized in that: described core bar end is provided with the lock cylinder of pulling back safely, the pull back outer wall place of lock cylinder of safety is provided with upper limit retaining ring and lower limit retaining ring from top to bottom successively, be provided with pull back the safely needle holder and the base of pulling back safely down in the tube neck of cylindrical shell end from top to bottom successively, last safety pull back needle holder and down safety pull back base all in the form of a ring, safety is pulled back lock cylinder can be through last safety pull back needle holder and the safety base centre bit of pulling back down.
The invention discloses a kind of safety injector, its reasonable integral structure, simple to operate, there is not unnecessary step, one-hand operation, product can be realized full-automatic assembling in enormous quantities, has good practicability and safety in actual use, has outstanding substantive distinguishing features and marked improvement compared to existing technologies.
Description of drawings:
Fig. 1 is a structural representation of the present invention
Fig. 2 is the present invention first user mode figure
Fig. 3 is the present invention second user mode figure
Fig. 4 is the present invention the 3rd user mode figure
Fig. 5 is the needle holder structural representation of pulling back safely in the present invention
Fig. 6 is the needle holder profile of pulling back safely in the present invention
Fig. 7 is the base axonometric chart of pulling back safely under the present invention
Fig. 8 is a core bar structure sketch map of the present invention
Fig. 9 is a tube structure sketch map of the present invention
The specific embodiment:
With reference to the accompanying drawings, the present invention further is described
The present invention is a kind of safety injector, it mainly comprises cylindrical shell 1, cylindrical shell 1 is provided with core bar 2, core bar 2 places are socketed with plug 3, be provided with needle holder 23 in the tube neck 7 of cylindrical shell 1, needle holder 23 ends are provided with needle tubing 24, it is characterized in that: described core bar 2 ends are provided with the lock cylinder 4 of pulling back safely, the pull back outer wall place of lock cylinder 4 of safety is provided with upper limit retaining ring 5 and lower limit retaining ring 6 from top to bottom successively, be provided with pull back the safely needle holder 8 and the base 9 of pulling back safely down in the tube neck 7 of cylindrical shell 1 end from top to bottom successively, the last needle holder 8 of pulling back is safely pulled back base 9 all in the form of a ring with following safety, safety is pulled back lock cylinder 4 can be through last safety pull back needle holder 8 and safety base 9 centre bits of pulling back down, the described safety that goes up is pulled back needle holder 8 in the form of a ring, its centre bit is provided with syringe needle fixed leg 10, last needle holder 8 outer walls of pulling back safely are the fixing auxiliary ring body 11 of syringe needle, the fixing auxiliary ring body 11 of syringe needle is concentric circles with fixed leg 10, form between fixing auxiliary ring body 11 of syringe needle and the fixed leg 10 and go up the needle holder annular groove 12 of pulling back safely, the last needle holder 8 outer wall bottoms of pulling back safely are provided with ring packing groove groove 13, be provided with O-ring seal 14 in the last ring packing groove groove 13, syringe needle fixed leg 10 inner chamber hollows, interior cavity wall place is provided with the thorn 15 of setting one's teeth on edge upwards, and fixing auxiliary ring body 11 inwalls of syringe needle are provided with needle stand snap ring 16.The cavity wall place is provided with 1-10 the thorn 15 of setting one's teeth on edge in the described syringe needle fixed leg 10, and such project organization has guaranteed to have certain expansionary force effect and reverse drag effect herein.Described base 9 centers of pulling back safely down are a cone 17, cone 17 places vertically are provided with interior long opening 18, following safe base 9 outer walls of pulling back are following auxiliary ring body 19, and following auxiliary ring body 19 places vertically are provided with foreign minister's opening 20, cone 17 and following 19 one-tenth concentric circles of auxiliary ring body.Described cone 17 places vertically are provided with long opening 18 in the 1-10 bar, and such project organization has guaranteed to have certain expansionary force effect and reverse drag effect herein.Described auxiliary ring body 19 places down vertically are provided with foreign minister's 1-10 opening 20, and such project organization has guaranteed to have certain expansionary force effect and reverse drag effect herein.Described auxiliary ring body 19 outer wall upper edge down are provided with flange 21.Described cylindrical shell 1 inwall is provided with the annular stop groove 22 that matches with flange 21, and place, described tube neck 7 inwall tops is provided with inward flange 25, and the needle holder 8 of pulling back safely on this inward flange 25 can prevent in assembling and injection process ejects outside the cylindrical shell.
As shown in fig. 1, this is a state for syringe is former, upper limit retaining ring 5 and lower limit retaining ring 6 all are positioned at set one's teeth on edge thorn 15 and cone 17 belows, as shown in Figure 2, the beginning imbibition also promotes core bar 2 forward, at this moment, upper limit retaining ring 5 and lower limit retaining ring 6 take advantage of a situation pushing up set one's teeth on edge the thorn 15 and cone 17 be moved to its top, as shown in Figure 3, pull back core bar 2, because lower limit retaining ring 6 is stuck in cone 17 tops, to descend the base 9 of pulling back safely to spur downwards so be easy to gram, as shown in Figure 4, continue to pull back core bar 2, because upper limit retaining ring 5 is stuck in thorn 15 tops of setting one's teeth on edge, so being easy to gram will go up the safety needle holder 8 of pulling back and pull back, at this moment, also be drawn into cylindrical shell 1 inner chamber, realize the syringe safe operation as for the pull back needle holder portion at needle holder 8 places of last safety.
Claims (9)
1. safety injector, it mainly comprises cylindrical shell (1), cylindrical shell (1) is provided with core bar (2), core bar (2) locates to be socketed with plug (3), be provided with needle holder (23) in the tube neck (7) of cylindrical shell (1), needle holder (23) end is provided with needle tubing (24), it is characterized in that: described core bar (2) end is provided with the lock cylinder (4) of pulling back safely, the pull back outer wall place of lock cylinder (4) of safety is provided with upper limit retaining ring (5) and lower limit retaining ring (6) from top to bottom successively, be provided with pull back the safely needle holder (8) and the base (9) of pulling back safely down in the tube neck (7) of cylindrical shell (1) end from top to bottom successively, last safety pull back needle holder (8) and down safety pull back base (9) all in the form of a ring, safety is pulled back lock cylinder (4) can be through last safety pull back needle holder (8) and following base (9) centre bit of pulling back safely.
2. a kind of safety injector according to claim 1, it is characterized in that: the described safety that goes up is pulled back needle holder (8) in the form of a ring, its centre bit is provided with syringe needle fixed leg (10), last needle holder (8) outer wall of pulling back safely is the fixing auxiliary ring body (11) of syringe needle, the fixing auxiliary ring body (11) of syringe needle is concentric circles with fixed leg (10), form between fixing auxiliary ring body (11) of syringe needle and the fixed leg (10) and go up the needle holder annular groove (12) of pulling back safely, last needle holder (8) the outer wall bottom of pulling back safely is provided with ring packing groove groove (13), be provided with O-ring seal (14) in the last ring packing groove groove (13), syringe needle fixed leg (10) inner chamber hollow, interior cavity wall place is provided with the thorn (15) of setting one's teeth on edge upwards, and fixing auxiliary ring body (11) inwall of syringe needle is provided with needle stand snap ring (16).
3. a kind of safety injector according to claim 2 is characterized in that: the interior cavity wall of described syringe needle fixed leg (10) place is provided with 1-10 the thorn (15) of setting one's teeth on edge.
4. a kind of safety injector according to claim 1, it is characterized in that: described base (9) center of pulling back safely down is a cone (17), cone (17) locates vertically to be provided with interior long opening (18), following safe base (9) outer wall of pulling back is following auxiliary ring body (19), auxiliary ring body (19) locates vertically to be provided with foreign minister's opening (20) down, and cone (17) becomes concentric circles with following auxiliary ring body (19).
5. a kind of safety injector according to claim 4 is characterized in that: described cone (17) locates vertically to be provided with long opening (18) in the 1-10 bar.
6. a kind of safety injector according to claim 4 is characterized in that: described auxiliary ring body (19) down locates vertically to be provided with foreign minister's 1-10 opening (20).
7. a kind of safety injector according to claim 4 is characterized in that: described auxiliary ring body (19) outer wall upper edge down is provided with flange (21).
8. a kind of safety injector according to claim 1 is characterized in that: described cylindrical shell (1) inwall is provided with the annular stop groove (22) that matches with flange (21).
9. a kind of safety injector according to claim 1 is characterized in that: place, described tube neck (7) inwall top is provided with inward flange (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910048684 CN101850141B (en) | 2009-04-01 | 2009-04-01 | Safe injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910048684 CN101850141B (en) | 2009-04-01 | 2009-04-01 | Safe injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101850141A true CN101850141A (en) | 2010-10-06 |
| CN101850141B CN101850141B (en) | 2013-06-12 |
Family
ID=42801931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910048684 Expired - Fee Related CN101850141B (en) | 2009-04-01 | 2009-04-01 | Safe injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101850141B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553036A (en) * | 2012-01-19 | 2012-07-11 | 陆盘中 | Two-stage separate type safe self-destruction syringe |
| CN103386158A (en) * | 2013-08-08 | 2013-11-13 | 江西洪达医疗器械集团有限公司 | Safety syringe |
| CN103446643A (en) * | 2012-08-24 | 2013-12-18 | 江苏亿乐医疗用品有限公司 | Core rod locking-type safety syringe |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1586652A (en) * | 2004-07-06 | 2005-03-02 | 邹纯平 | Self-destroying safety injector |
| CN2748099Y (en) * | 2004-10-19 | 2005-12-28 | 丹阳市共创医疗器械科技有限公司 | Safety syringe with automatic retractable needle |
| CN2741587Y (en) * | 2004-11-13 | 2005-11-23 | 冯兴龙 | Disposable safety destroying type syringe |
| CN100553704C (en) * | 2007-11-16 | 2009-10-28 | 深圳市利骏达科技开发有限公司 | Automatic whip-back needle safety self-breaking syringe |
| CN201500347U (en) * | 2009-04-01 | 2010-06-09 | 江苏亿乐医疗用品有限公司 | Safe injector |
-
2009
- 2009-04-01 CN CN 200910048684 patent/CN101850141B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553036A (en) * | 2012-01-19 | 2012-07-11 | 陆盘中 | Two-stage separate type safe self-destruction syringe |
| CN103446643A (en) * | 2012-08-24 | 2013-12-18 | 江苏亿乐医疗用品有限公司 | Core rod locking-type safety syringe |
| CN103446643B (en) * | 2012-08-24 | 2015-12-09 | 江苏亿乐医疗用品有限公司 | A kind of core rod locking-type safety syringe |
| CN103386158A (en) * | 2013-08-08 | 2013-11-13 | 江西洪达医疗器械集团有限公司 | Safety syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101850141B (en) | 2013-06-12 |
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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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20140401 |