CN102068740B - Automatic retraction type safety injector - Google Patents
Automatic retraction type safety injector Download PDFInfo
- Publication number
- CN102068740B CN102068740B CN 201010604640 CN201010604640A CN102068740B CN 102068740 B CN102068740 B CN 102068740B CN 201010604640 CN201010604640 CN 201010604640 CN 201010604640 A CN201010604640 A CN 201010604640A CN 102068740 B CN102068740 B CN 102068740B
- Authority
- CN
- China
- Prior art keywords
- core bar
- needle tubing
- overcoat
- thromboembolism
- needle
- 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.)
- Active
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an automatic retraction type safety injector, which comprises an outer sleeve and a core rod arranged in the outer sleeve, wherein the front part of the outer sleeve is connected with a needle head component provided with a jacket; the needle head component comprises a needle tube, a needle tube base and a needle tube outer base; the front part of the outer sleeve is provided with an external conical locking joint connected with a threaded joint at the rear end part of the needle tube outer base; the outer sleeve is also connected with at least two elastic damping claws which extend forwards to the outside of the outer sleeve; the core rod is a hollow core rod, the front part of the core rod is provided with a bolt plug which extends forwards to the inside of the inner cavity, the core is connected with the bolt plug though through a plastic plug, a slip ring is arranged on the rear end of the bolt plug, a convex ring for blocking the slip ring is arranged on the inner wall of the core rod which is positioned on the rear side of the slip ring, the bolt plug positioned in the inner cavity is provided with a compression spring, and a clamping hollow cavity matched with a clamping cone is formed on the front end of the bolt plug. The automatic retraction type safety injector has a rational structure, is convenient to assemble and use and high in safety and can be directly collected for concentrated treatment after injection without manual operation such as breakage, and thus, the working efficiency of medical stuff is improved.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, particularly a kind of automatic retracting type safety injector.
Background technology
Syringe is a kind of use the most often, and the medical apparatus that use amount is maximum is mainly used in liquid medicine injection or check blood drawing etc.For fear of using repeatedly, disposable sterilized injector has been promoted the use of in cross infection in recent years.But also remain intact after existing disposable sterilized injector uses up, can reuse, this has an opportunity to take advantage of just for some lawless persons, has brought the hidden danger of cross infection, and propagation tends to produce the disease of.In addition, the syringe of having injected in processing procedure subsequently, owing to outside syringe needle is exposed to, scratch skin easily, causes new cross infection, recycles loaded down with trivial details simultaneously.
Application number is that 200810014624.3 one Chinese patent application discloses a kind of automatic retraction safety syringe; Comprise overcoat, piston, core bar, needle assembly, helmet etc.; The overcoat rear portion is equipped with the core bar locking ring, and needle assembly includes needle tubing, needle tubing seat, needle tubing seat snap ring, sealing ring, spring, and the needle tubing seat is movably arranged on the overcoat front portion; Elastic damping pawl through on the needle tubing seat snap ring is fixed, anterior pocketed springs; Core bar is the cavity tubular structure, and its ledge matches with the elastic damping pawl of needle tubing seat snap ring, and the front end of core bar is equipped with obstruction, and obstruction is provided with the engaging cavity that matches with needle tubing seat engaging cylinder.After injection finished, under the effect of compression spring, the needle tubing seat was pushed in the cavity of core bar together with needle tubing, obstruction, and the elastic damping pawl of core bar locking ring is resisted against on the locking boss of core bar, stops core bar to be pulled back.This technical scheme complex structural designs, cost height, production and assembly are inconvenient; And this technical scheme can be because its structural design causes the part medicinal liquid to remain in the syringe after having injected; The needle tubing of this technical scheme and core bar and overcoat are fixed together simultaneously, can not according to circumstances need change when using like this, relatively waste.
Summary of the invention
Technical problem to be solved by this invention is the deficiency to prior art, provides a kind of rational in infrastructure, assemble easy to use, the automatic retracting type safety injector that security performance is good.
Technical problem to be solved by this invention is to realize through following technical scheme.The present invention is a kind of automatic retracting type safety injector, comprises overcoat and the core bar that is located in the overcoat, and the overcoat front portion is connected with needle assembly, and needle assembly is provided with sheath; Be characterized in: needle assembly comprises the outer seat of needle tubing, needle tubing seat and needle tubing, and the needle tubing seat is located on the needle tubing, and the rear end of needle tubing seat is provided with the engaging circular cone, and the outer cover for seat of needle tubing is located on the needle tubing seat, and the outer base rear end portion of needle tubing is provided with nipple; Described overcoat front end is provided with the outer cone locked joints that is connected with nipple, puts outward and also is connected with at least two elastic damping pawls that stretch out overcoat forward; Described core bar is the hollow core bar that is provided with inner chamber; The front portion of core bar is provided with the thromboembolism that stretches out inner chamber forward; The core bar front end is provided with the plug that connects core bar and thromboembolism, and the thromboembolism rear end is provided with the slip ring that cooperates with the core bar inwall, and the core bar inwall of slip ring rear side is provided with the bulge loop that stops slip ring; The thromboembolism that is in the inner chamber is provided with the compression spring, and described thromboembolism front end is provided with and engages the engaging cavity that circular cone matches.
Technical problem to be solved by this invention can also further realize through following technical scheme.Above-described automatic retracting type safety injector is characterized in: overcoat rear end internal chamber wall is provided with the locking bulge loop, and the core bar outer wall of plug rear side is provided with the locking boss that is used with the locking bulge loop.
Technical problem to be solved by this invention can also further realize through following technical scheme.Above-described automatic retracting type safety injector is characterized in: the thromboembolism front portion is provided with several liquid-through holes that is communicated with the engaging cavity.
Compared with prior art; After the present invention's injection finished, the elastic damping pawl that thromboembolism will be connected with overcoat outwards strutted, and the elastic damping pawl is disengaged the fixation of needle tubing seat; The engaging cavity of thromboembolism front end blocks the engaging circular cone simultaneously, and thromboembolism and needle assembly are linked together.At this moment continue to promote core bar, the slip ring of thromboembolism rear end is crossed bulge loop again, and the compression spring is excited, and under the effect of the elastic force that compresses spring, needle tubing seat connection needle tubing and thromboembolism is advanced in the inner chamber of core bar.Syringe will be reused like this, and needle point does not expose simultaneously, avoids syringe needle to scratch accidental injurys such as skin fully.Its structure rationally assemble easy to usely, and security performance is good, can directly be put into together after inject to focus on, and does not need manual work to break off with the fingers and thumb to break the operation such as grade, has improved medical worker's work efficiency.Simultaneously can select the different needle tubing of thickness as required, change needle assembly and can use, practice thrift cost.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is a needle assembly structural representation of the present invention.
Fig. 3 is a core bar structure sketch map of the present invention.
Fig. 4 is a jacket structure sketch map of the present invention.
The specific embodiment
Following with reference to accompanying drawing, further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not constitute restriction to its right.
Embodiment 1.With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4.A kind of automatic retracting type safety injector comprises overcoat 11 and the core bar 10 that is located in the overcoat 11, and overcoat 11 front portions are connected with needle assembly, and needle assembly is provided with sheath 1; Needle assembly comprises the outer seat 4 of needle tubing 2, needle tubing seat 3 and needle tubing, and needle tubing seat 3 is located on the needle tubing 2, and the rear end of needle tubing seat 3 is provided with engaging circular cone 13, and the outer seat 4 of needle tubing is set on the needle tubing seat 3, and the outer seat of needle tubing 4 rearward end are provided with nipple; Described overcoat 11 front ends are provided with the outer cone locked joints 17 that is connected with nipple; Also be connected with at least two elastic damping pawls 5 that stretch out overcoat 11 forward on the overcoat 11; Described core bar 10 is for being provided with the hollow core bar of inner chamber 18; The front portion of core bar 10 is provided with the thromboembolism 6 that stretches out inner chamber 18 forward; Core bar 10 front ends are provided with the plug 7 that connects core bar 10 and thromboembolism 6, and thromboembolism 6 rear ends are provided with the slip ring 9 that cooperates with core bar 10 inwalls, and core bar 10 inwalls of slip ring 9 rear sides are provided with the bulge loop 16 that stops slip ring 9; The thromboembolism 6 that is in the inner chamber 18 is provided with compression spring 8, and described thromboembolism 6 front ends are provided with and engage the engaging cavity 14 that circular cone 13 matches.
During use; Select suitable needle assembly; Needle assembly is connected with the outer cone locked joints 17 of overcoat 11 front ends through the nipple on the outer seat 4 of needle tubing; The elastic damping pawl 5 that connects on the overcoat 11 props up needle tubing seat 3, prevents that the needle tubing 2 on the needle tubing seat 3 bounces back under stressing conditions before injection ends.Take off sheath 1, add medicinal liquid and inject.After having injected, the elastic damping pawl 5 that thromboembolism 6 will be connected with overcoat 11 outwards struts, and the fixation of 5 pairs of needle tubing seats 3 of elastic damping pawl is disengaged, and the engaging cavity 14 of thromboembolism 6 front ends blocks engaging circular cone 13 simultaneously, and thromboembolism 6 and needle assembly are linked together.At this moment continue to promote core bar 10, the slip ring 9 of thromboembolism 6 rear ends is crossed bulge loop 16 again, and compression spring 8 is excited, and under the effect of the elastic force that compresses spring 8, needle tubing seat 3 is advanced in the inner chamber 18 of core bar 10 together with needle tubing 2 and thromboembolism 6.
Embodiment 2.In the embodiment 1 described automatic retracting type safety injector: overcoat 11 rear end internal chamber walls are provided with locking bulge loop 12, and core bar 10 outer walls of plug 7 rear sides are provided with the locking boss 15 that is used with locking bulge loop 12.Pulled out overcoat 11 easily in the time of can preventing core bar 10 phase post-tensionings like this.Locking boss 15 can be 2, is not straight when being pulled outwardly core bar 10 like this, also is not afraid of locking boss 15 and crosses locking bulge loop 12 and be drawn out.
Embodiment 3.In the embodiment 1 described automatic retracting type safety injector: thromboembolism 6 front portions are provided with several liquid-through holes that is communicated with engaging cavity 14.When having injected soon, residual medicinal liquid can be gone out from needle tubing 2 through liquid-through hole like this, and making does not have medicinal liquid residual in the syringe.
Claims (3)
1. an automatic retracting type safety injector comprises overcoat (11) and is located at the core bar (10) in the overcoat (11), and overcoat (11) front portion is connected with needle assembly, and needle assembly is provided with sheath (1); It is characterized in that: needle assembly comprises the outer seat of needle tubing (2), needle tubing seat (3) and needle tubing (4); Needle tubing seat (3) is located on the needle tubing (2); The rear end of needle tubing seat (3) is provided with engaging circular cone (13); The outer seat of needle tubing (4) is set on the needle tubing seat (3), and the outer seat of needle tubing (4) rearward end is provided with nipple; Described overcoat (11) front end is provided with the outer cone locked joints (17) that is connected with nipple, also is connected with at least two the elastic damping pawls (5) that stretch out overcoat (11) forward on the overcoat (11); Described core bar (10) is for being provided with the hollow core bar of inner chamber (18); The front portion of core bar (10) is provided with the thromboembolism (6) that stretches out inner chamber (18) forward; Core bar (10) front end is provided with the plug (7) that connects core bar (10) and thromboembolism (6); Thromboembolism (6) rear end is provided with the slip ring (9) that cooperates with core bar (10) inwall; Core bar (10) inwall of slip ring (9) rear side is provided with the bulge loop (16) that stops slip ring (9), and the thromboembolism (6) that is in the inner chamber (18) is provided with compression spring (8), and described thromboembolism (6) front end is provided with and engages the engaging cavity (14) that circular cone (13) matches.
2. automatic retracting type safety injector according to claim 1; It is characterized in that: overcoat (11) rear end internal chamber wall is provided with locking bulge loop (12), and core bar (10) outer wall of plug (7) rear side is provided with the locking boss (15) that is used with locking bulge loop (12).
3. automatic retracting type safety injector according to claim 1 is characterized in that: thromboembolism (6) front portion is provided with several liquid-through holes that is communicated with engaging cavity (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010604640 CN102068740B (en) | 2010-12-24 | 2010-12-24 | Automatic retraction type safety injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010604640 CN102068740B (en) | 2010-12-24 | 2010-12-24 | Automatic retraction type safety injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102068740A CN102068740A (en) | 2011-05-25 |
| CN102068740B true CN102068740B (en) | 2012-07-25 |
Family
ID=44027620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010604640 Active CN102068740B (en) | 2010-12-24 | 2010-12-24 | Automatic retraction type safety injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102068740B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111743549B (en) * | 2020-07-03 | 2021-02-19 | 于美瑛 | Hematology specialty ware of drawing blood |
| WO2023236505A1 (en) * | 2022-10-17 | 2023-12-14 | 北京博辉瑞进生物科技有限公司 | Surgical stapler assembly and surgical stapler |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2817873Y (en) * | 2005-09-02 | 2006-09-20 | 罗松能 | Safety and self-destructive disposable syringe of steel needle springback |
| CN201939825U (en) * | 2010-12-24 | 2011-08-24 | 江苏苏云医疗器材有限公司 | Automatically-retractive safe injector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6689106B2 (en) * | 2000-07-31 | 2004-02-10 | Becton Dickinson And Company | Retracting needle assembly for a syringe |
| US7604613B2 (en) * | 2004-01-20 | 2009-10-20 | Beckton, Dickinson And Company | Syringe having a retractable needle |
-
2010
- 2010-12-24 CN CN 201010604640 patent/CN102068740B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2817873Y (en) * | 2005-09-02 | 2006-09-20 | 罗松能 | Safety and self-destructive disposable syringe of steel needle springback |
| CN201939825U (en) * | 2010-12-24 | 2011-08-24 | 江苏苏云医疗器材有限公司 | Automatically-retractive safe injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102068740A (en) | 2011-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101291698B (en) | Disposable safe syringe with retractable needle head | |
| CN201453787U (en) | Disposable needle tip automatic retraction safe syringe | |
| CN201939825U (en) | Automatically-retractive safe injector | |
| CN102695533A (en) | Clinical syringe | |
| US7993307B2 (en) | Safe medical syringe with an automatic slowly retractable needle | |
| WO2009135439A1 (en) | Single-use self-destruction safety syringe without fluid residua | |
| CN201453770U (en) | Safety syringe with separate syringe body and needle | |
| CN104027874A (en) | Retractable type safe injection syringe with changeable needle | |
| CN201505347U (en) | Improved self-destruction safety injector | |
| CN102068740B (en) | Automatic retraction type safety injector | |
| CN201492764U (en) | Disposable needle tip automatic retraction safety syringe | |
| CN105709309A (en) | Intelligent safe injection syringe | |
| CN102872506A (en) | Medical safety injector | |
| CN204395142U (en) | A kind of type self-destroyed bilayer engaging syringe of pulling back safely | |
| CN208877568U (en) | A kind of children special-purpose disposable syringe | |
| CN101143237A (en) | Steel needle retractable safety self-destructing syringe | |
| CN201375735Y (en) | Spring type safe self-destruction syringe | |
| CN201070486Y (en) | Spring type safe self-breaking syringe | |
| CN103654997B (en) | A kind of continuous injector | |
| CN102488948B (en) | Self-destruction syringe with medicine dissolving region | |
| CN208678077U (en) | A kind of changing needle hair style retractable safety injector | |
| CN201612912U (en) | Safety spring self-destruction injector | |
| CN201227459Y (en) | Disposable syringe | |
| CN219743554U (en) | Prefilled spring safety vaccine syringe | |
| CN201379862Y (en) | Spring-type safe self-destroying syringe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |