CN2829758Y - Disposable manual retrieving safety injector - Google Patents
Disposable manual retrieving safety injector Download PDFInfo
- Publication number
- CN2829758Y CN2829758Y CN 200520085367 CN200520085367U CN2829758Y CN 2829758 Y CN2829758 Y CN 2829758Y CN 200520085367 CN200520085367 CN 200520085367 CN 200520085367 U CN200520085367 U CN 200520085367U CN 2829758 Y CN2829758 Y CN 2829758Y
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- CN
- China
- Prior art keywords
- needle
- push rod
- cavity
- piston
- drag hook
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- 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 - Fee Related
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Abstract
The utility model relates to a disposable manual retracting safety injector which is a medical utensil. The utility model comprises a needle cylinder, a push rod, a piston and an injection needle, wherein the front end of the needle cylinder is provided with a liquid outlet which is assembled with the injection needle, the piston is arranged on the front end of the push rod, and the back end of the push rod is connected with a push-pull handle. The injection needle of the utility model comprises a stainless steel needle head and a needle seat, wherein the needle seat is assembled in an installing cavity of the needle seat at the front end of the needle cylinder and is provided with a pull hook which extends in the needle cylinder, and the pull hook is provided with a positioning blocking table which corresponds to a convex table on the installing cavity of the needle seat. The piston is provided with an inner frame body of the piston, the inner frame body of the piston is provided with a cavity of the pull hook, and an opening at the front end of the cavity of the pull hook corresponds to the pull hook and is provided with a buckling edge of the pull hook, the opening at the front end of the cavity of the pull hook is sealed with a film, and the push rod is provided with an easily broken point. The utility model has the advantages of simple and reasonable structure, safety, convenience, reliable performance and easy back pull of the injection needle, avoids the phenomenon that the injection needle is retracted in the needle cylinder during injection, is easily destroyed after use, and prevents the injector from being repeatedly used once more.
Description
Technical field
This utility model relates to a kind of improved syringe, is medical apparatus.
Background technology
Present widely used disposable syringe because it is promptly discarded, therefore has convenient, healthy characteristics after disposable use, can effectively prevent cross infection.But outside the rustless steel syringe needle after being to use is exposed to, abnormally dangerous, cause medical personnel might stab oneself because of carelessness especially easily, still can not avoid medical personnel's risk of infection.For this reason; people have developed many safety injectors that the stainless pin head protection is got up; as a kind of safety injector; its needle stand rear end is the puncture cone of band handle; rubber piston has thin film region and collet; when injection finished, the cone of needle stand rear end punctured the thin film of rubber piston and embeds in the collet, and the push rod of pulling back then can be drawn in needle stand and first of stainless pin in the syringe.This structure has been improved the deficiency that the rustless steel syringe needle that exposes is stabbed the personnel aspect easily, but, owing to being close to close fit, needle stand and syringe fit together, syringe is the power that the restriction entry needle retreats to the chucking power of needle stand, also be pull back entry needle the resistance that must overcome, this power depends on the precision of device.Therefore, may occur two kinds of drawbacks during use: in the entry needle indentation syringe, use inconvenience when the difficulty of pulling back or acupuncture treatment, also might cause the injection failure, performance is unreliable.
Summary of the invention
The purpose of this utility model is to provide a kind of disposable use safety injector that manually bounces back, safe ready, dependable performance.
The disposable use described in the utility model safety injector that manually bounces back, comprise syringe, push rod, piston and entry needle, the front end of syringe has liquid outlet, the liquid outlet place is fitted with entry needle, piston places the front end of push rod, the rear end of push rod connects drawing handle, its entry needle comprises rustless steel syringe needle and needle stand, needle stand is assemblied in the needle stand of syringe front end and installs in the cavity, needle stand is provided with the drag hook that stretches in the syringe, drag hook is provided with location retaining platform, location retaining platform is corresponding with the boss in needle stand is installed cavity, and piston has the piston inner frame body, and the piston inner frame body is provided with the drag hook cavity, the front opening of drag hook cavity is corresponding with drag hook and have drag hook to buckle the limit, and envelope has thin film on the front opening of drag hook cavity.
Under the normal assembled state, the location retaining platform on the drag hook is fended off and is installed on the boss of cavity at needle stand, and the restriction entry needle retreats, and solid and reliable, the phenomenon of entry needle indentation syringe is the same with common syringe in the time of can not occurring having an acupuncture treatment, and can finish the acupuncture treatment function smoothly.When injection was finished, drag hook promptly punctured thin film, stretched in the drag hook cavity and be hooked in drag hook to buckle on the limit, at this moment, the boss that location retaining platform on the drag hook and needle stand are installed in the cavity is thrown off, and push rod is pulled back backward, can like a cork entry needle be retracted in the syringe, pull back easily.Safe ready, dependable performance.
In this utility model:
Drag hook can design 2-6 and suit, and circumferentially distributes with respect to needle stand, be many flaps, but radial compression is adjusted the adaptation situation automatically.
Between needle stand and needle stand installation cavity, establish sealing ring, strengthen sealing property.
Establish the push-and-pull limited block in the rearward end of push rod, can avoid shifting to an earlier date self-destruction because of maloperation causes syringe before the injection, the push-and-pull location guarantees normally to use, convenient accurately operation.
On push rod, establish easily broken place, as very thin junction point, push rod breach, reduced diameter section push rod etc., when push rod is pulled back easily broken place, can directly push rod be fractureed from easily broken, syringe is thoroughly damaged, avoid the repeated use of syringe, solved syringe and reused the cross infection problem that causes, safe and reliable.
From this, the disposable use of this utility model safety injector that manually bounces back, simple and reasonable, withdrawn needle is easy, the phenomenon of entry needle indentation syringe when having avoided acupuncture treatment again, and can easily damage after using, prevented the repeated use once more of syringe, safe ready, dependable performance is beneficial to and applies.
Description of drawings
Fig. 1, this utility model one example structure sketch map.
A portion partial enlarged drawing among Fig. 2, Fig. 1.
Distress condition figure after Fig. 3, the use.
Among the figure: 1, rustless steel syringe needle 2, needle stand 3, sealing ring 4, boss 5, location keep off platform 6, drag hook 7, thin film 8, buckle limit 9, piston inner frame body 10, piston 11, drag hook cavity 12, the easily broken breach 13 of push rod, syringe 14, push rod 15, limited block 16, handle.
The specific embodiment
The utility model is described in further detail in conjunction with the foregoing description accompanying drawing.
As shown in the figure, the disposable use described in the utility model safety injector that manually bounces back, comprise syringe 13, push rod 14, piston 10 and entry needle, the front end of syringe 13 has liquid outlet, the liquid outlet place is fitted with entry needle, piston 10 places the front end of push rod 14, the rear end of push rod 14 connects drawing handle 16, its entry needle comprises rustless steel syringe needle 1 and needle stand 2, needle stand 2 is assemblied in the needle stand of syringe 13 front ends and installs in the cavity, needle stand 2 and needle stand are installed between cavity and are provided with sealing ring 3, needle stand 2 is provided with 4 drag hooks 6 that stretch in the syringe 13, circumferentially distributes with respect to needle stand 2, is many flaps, drag hook 6 is provided with location retaining platform 5, and location retaining platform 5 is corresponding with the boss 4 in needle stand is installed cavity; Piston 10 has and push rod 14 all-in-one-piece piston inner frame bodies 9, piston inner frame body 9 is provided with drag hook cavity 11, the front opening of drag hook cavity 11 and drag hook 6 are corresponding and have drag hook to buckle limit 8, envelope has thin film 7 on the front opening of drag hook cavity 11, push rod 14 is provided with easily broken breach 12, and the rearward end of push rod 14 is established push-and-pull limited block 15.
Under the normal assembled state, the location retaining platform 5 on the drag hook 6 is fended off and is installed on the boss 4 of cavity at needle stand, and the restriction entry needle retreats, and solid and reliable, the phenomenon of entry needle indentation syringe is the same with common syringe in the time of can not occurring having an acupuncture treatment, and can finish the acupuncture treatment function smoothly.When injection is finished, the sharp-pointed end of drag hook 6 promptly punctures thin film 7,4 flap drag hooks 6 radially back and stretch in the lump in the drag hook cavity 11, and be hooked in drag hook and buckle on the limit 8, at this moment, the location retaining platform 5 on the drag hook 6 is thrown off stopping of boss 4, and push rod 14 is pulled back backward, can like a cork entry needle be retracted in the syringe 13, safe and reliable.When push rod 14 is pulled back easily broken breach 12, can directly push rod 14 be fractureed from easily broken breach 12, syringe is damaged scraps, thoroughly avoided reusing once more.
Claims (6)
1, a kind of disposable use safety injector that manually bounces back, comprise syringe, push rod, piston and entry needle, the front end of syringe has liquid outlet, the liquid outlet place is fitted with entry needle, piston places the front end of push rod, the rear end of push rod connects drawing handle, it is characterized in that entry needle comprises rustless steel syringe needle and needle stand, needle stand is assemblied in the needle stand of syringe front end and installs in the cavity, needle stand is provided with the drag hook that stretches in the syringe, drag hook is provided with location retaining platform, location retaining platform is corresponding with the boss in needle stand is installed cavity, and piston has the piston inner frame body, and the piston inner frame body is provided with the drag hook cavity, the front opening of drag hook cavity is corresponding with drag hook and have drag hook to buckle the limit, and envelope has thin film on the front opening of drag hook cavity.
2, the disposable use according to claim 1 safety injector that manually bounces back is characterized in that drag hook has 2-6, circumferentially distributes with respect to needle stand, is many flaps.
3, the disposable use according to claim 1 safety injector that manually bounces back is characterized in that needle stand and needle stand are installed between cavity to be provided with sealing ring.
4, the disposable use according to claim 1 safety injector that manually bounces back is characterized in that the rearward end of push rod is provided with the push-and-pull limited block.
5, according to claim 1,2, the 3 or 4 described disposable uses safety injector that manually bounces back, it is characterized in that push rod is provided with easily broken place.
6, the disposable use according to claim 5 safety injector that manually bounces back is characterized in that easily broken place is the push rod breach.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520085367 CN2829758Y (en) | 2005-07-15 | 2005-07-15 | Disposable manual retrieving safety injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520085367 CN2829758Y (en) | 2005-07-15 | 2005-07-15 | Disposable manual retrieving safety injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2829758Y true CN2829758Y (en) | 2006-10-25 |
Family
ID=37134681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520085367 Expired - Fee Related CN2829758Y (en) | 2005-07-15 | 2005-07-15 | Disposable manual retrieving safety injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2829758Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780296B (en) * | 2009-08-17 | 2012-05-23 | 李华美 | Steel needle self-shrinking syringe |
| CN105477747A (en) * | 2015-12-31 | 2016-04-13 | 海杰亚（北京）医疗器械有限公司 | Precise quantitative injection instrument with treatment material |
| CN106345012A (en) * | 2016-10-25 | 2017-01-25 | 温州市龙湾求精管业有限公司 | Safe injector |
| CN106955399A (en) * | 2016-01-08 | 2017-07-18 | 吕文进 | Safety injector |
| CN111760132A (en) * | 2020-08-06 | 2020-10-13 | 浙江灵洋医疗器械有限公司 | Self-destruction syringe |
| CN111888578A (en) * | 2020-08-06 | 2020-11-06 | 浙江环良医疗器械有限公司 | Self-destruction syringe |
-
2005
- 2005-07-15 CN CN 200520085367 patent/CN2829758Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780296B (en) * | 2009-08-17 | 2012-05-23 | 李华美 | Steel needle self-shrinking syringe |
| CN105477747A (en) * | 2015-12-31 | 2016-04-13 | 海杰亚（北京）医疗器械有限公司 | Precise quantitative injection instrument with treatment material |
| CN105477747B (en) * | 2015-12-31 | 2018-09-07 | 海杰亚（北京）医疗器械有限公司 | A kind of accurate quantification injection instrument used for injection with therapeutic substance |
| CN106955399A (en) * | 2016-01-08 | 2017-07-18 | 吕文进 | Safety injector |
| CN106345012A (en) * | 2016-10-25 | 2017-01-25 | 温州市龙湾求精管业有限公司 | Safe injector |
| CN111760132A (en) * | 2020-08-06 | 2020-10-13 | 浙江灵洋医疗器械有限公司 | Self-destruction syringe |
| CN111888578A (en) * | 2020-08-06 | 2020-11-06 | 浙江环良医疗器械有限公司 | Self-destruction syringe |
| CN111760132B (en) * | 2020-08-06 | 2021-01-15 | 浙江灵洋医疗器械有限公司 | Self-destruction syringe |
| CN111888578B (en) * | 2020-08-06 | 2022-02-15 | 浙江环良医疗器械有限公司 | Self-destruction syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20061025 Termination date: 20130715 |