CN201939825U - Automatically-retractive safe injector - Google Patents

Automatically-retractive safe injector Download PDF

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Publication number
CN201939825U
CN201939825U CN2010206791583U CN201020679158U CN201939825U CN 201939825 U CN201939825 U CN 201939825U CN 2010206791583 U CN2010206791583 U CN 2010206791583U CN 201020679158 U CN201020679158 U CN 201020679158U CN 201939825 U CN201939825 U CN 201939825U
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.)
Expired - Lifetime
Application number
CN2010206791583U
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Chinese (zh)
Inventor
秦宏平
朱代学
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Suyun Medical Materials Co Ltd
Original Assignee
Jiangsu Suyun Medical Materials Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Suyun Medical Materials Co Ltd filed Critical Jiangsu Suyun Medical Materials Co Ltd
Priority to CN2010206791583U priority Critical patent/CN201939825U/en
Application granted granted Critical
Publication of CN201939825U publication Critical patent/CN201939825U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to an automatically-retractive safe injector which comprises a jacket and a core rod, wherein the core rod is arranged in the jacket; a needle head component is connected with the front part of the jacket; the needle head component is provided with a sheath; the needle head component comprises a needle tube, a needle tube base and a needle tube outer base; an outer cone locking joint which is connected with a thread joint at the rear end part of the needle tube outer base is arranged at the front end of the jacket; the jacket is connected with at least two elastic damping claws which extend forwards out of the jacket; the core rod is hollow; a bolt plug which extends forwards out of an inner cavity is arranged at the front part of the core rod; the core rod is connected with the bolt plug through a rubber plug; a sliding ring is arranged at the rear end of the bolt plug; a convex ring which blocks the sliding ring is arranged on the inner wall of the core rod on the rear side of the sliding ring; the bolt plug in the inner cavity is provided with a compression spring; and a buckling hollow cavity matched with a buckling cone is arranged at the front end of the bolt plug. The automatically-retractive safe injector has the advantages of reasonable structure, convenience in assembly and use, and high safety, can be directly placed together after injection for collective disposal, and does not need manually breaking off, etc., thereby improving the working efficiency of medical staff.

Description

A kind of automatic retracting type safety injector
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of automatic retracting type safety injector.
Background technology
Syringe is the most normal a kind of use, and the medical apparatus of use amount 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 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, needle assembly includes needle tubing, needle tubing seat, needle tubing seat snap ring, sealing ring, spring, the needle tubing seat is movably arranged on the overcoat front portion, fix anterior pocketed springs by the elastic damping pawl on the needle tubing seat snap ring; 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, the production and assembly inconvenience; 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 to change when using like this, relatively waste.
Summary of the invention
Technical problem to be solved in the utility model is at the deficiencies in the 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 in the utility model is to realize by following technical scheme.This utility model is a kind of automatic retracting type safety injector, comprises overcoat and is located at the interior core bar of 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 in the utility model can also further realize by 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 in the utility model can also further realize by 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 this utility model 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 put together after inject to focus on, and does not need manually to break off with the fingers and thumb the operation such as grade of breaking, and has improved medical worker's work efficiency.Simultaneously can select the different needle tubing of thickness as required, change needle assembly and can use, save cost.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is this utility model needle assembly structural representation.
Fig. 3 is this utility model core bar structure sketch map.
Fig. 4 is this utility model jacket structure sketch map.
The specific embodiment
Following with reference to accompanying drawing, further describe concrete technical scheme of the present utility model, 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, 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 by 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, prevent that the needle tubing 2 on the needle tubing seat 3 bounces back before injection ends under stressing conditions.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 by 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 interior core bar (10) of 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), 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).
CN2010206791583U 2010-12-24 2010-12-24 Automatically-retractive safe injector Expired - Lifetime CN201939825U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206791583U CN201939825U (en) 2010-12-24 2010-12-24 Automatically-retractive safe injector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206791583U CN201939825U (en) 2010-12-24 2010-12-24 Automatically-retractive safe injector

Publications (1)

Publication Number Publication Date
CN201939825U true CN201939825U (en) 2011-08-24

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102068740A (en) * 2010-12-24 2011-05-25 江苏苏云医疗器材有限公司 Automatic retraction type safety injector
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
CN107497017A (en) * 2017-09-25 2017-12-22 南京律智诚专利技术开发有限公司 A kind of disposable injection device with vacuum cavity
CN107569747A (en) * 2017-09-25 2018-01-12 南京律智诚专利技术开发有限公司 A kind of disposable injection device
CN113975540A (en) * 2021-11-25 2022-01-28 北京快舒尔医疗技术有限公司 Injection head assembly, syringe body and syringe

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102068740A (en) * 2010-12-24 2011-05-25 江苏苏云医疗器材有限公司 Automatic retraction type safety injector
CN102068740B (en) * 2010-12-24 2012-07-25 江苏苏云医疗器材有限公司 Automatic retraction type safety injector
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
CN103721325B (en) * 2014-01-12 2015-09-02 广东海鸥医疗器械股份有限公司 Automatic retracted safe syringe
CN107497017A (en) * 2017-09-25 2017-12-22 南京律智诚专利技术开发有限公司 A kind of disposable injection device with vacuum cavity
CN107569747A (en) * 2017-09-25 2018-01-12 南京律智诚专利技术开发有限公司 A kind of disposable injection device
CN113975540A (en) * 2021-11-25 2022-01-28 北京快舒尔医疗技术有限公司 Injection head assembly, syringe body and syringe
CN113975540B (en) * 2021-11-25 2023-12-26 北京快舒尔医疗技术有限公司 Injector head assembly, injector body and injector

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20110824

Effective date of abandoning: 20120725