CN210933164U

CN210933164U - Retractable safety syringe

Info

Publication number: CN210933164U
Application number: CN201921363949.2U
Authority: CN
Inventors: 唐金霞; 贾雪梅; 赖玉红
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-07-07
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses a but safe type syringe of formula of retractile, including pushing away handle, stopper, sliding block, spring and threaded rod, push away through push rod and piston connection, and the piston outside is equipped with the syringe to syringe front end integration is connected with annotates the head, stopper integration is connected in annotating the first outside, and the stopper surface is equipped with the spacing groove, the sliding block front end is equipped with the fixed slot, and the fixed slot front portion is equipped with the rubber pad, the spring overcoat is annotating first front end, and the spring end passes through the fixed slot and is connected with the sliding block, threaded rod integration is connected at annotating first front end, and the threaded rod side is equipped with the spread groove. The anterior syringe needle of this but retractable safety type syringe is fixed through the pintle, has made things convenient for the user to install the change to the syringe needle, and simultaneously, the sliding block can laminate the stopper under the effect of spring and fix flexible, has avoided the syringe needle to cause the injury to the user, has improved the security of syringe.

Description

Retractable safety syringe

Technical Field

The utility model relates to the technical field of syringes, in particular to a retractable safety syringe.

Background

In the daily medical treatment, a doctor needs to use a special medicine for the etiology of a patient, and generally needs to inject the medicine into a lesion site using a syringe in order to ensure the curative effect of the medicine.

The syringe needle of current syringe is mostly fixed structure, and the syringe needle installation is changed very trouble, simultaneously, when the syringe does not use, can't carry out fine protection to the syringe needle, and exposed syringe needle causes the injury to the user easily, and the syringe security is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but safe type syringe of retraction to the syringe needle that provides is difficult for installing the change in solving above-mentioned background art, can't protect the syringe needle, causes the injury to the user easily, the not high problem of security.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a but safe type syringe of formula of retracting, is including pushing away handle, stopper, sliding block, spring and threaded rod, push away the handle and pass through push rod and piston connection, and the piston outside is equipped with the syringe to syringe front end integration is connected with annotates the head, stopper integration is connected in annotating the first outside, and the stopper surface is equipped with the spacing groove to the stopper front end is equipped with the sliding tray, the sliding block front end is equipped with the fixed slot, and the fixed slot front portion is equipped with the rubber pad to the inboard integration of sliding block is connected with the gag lever post, the spring overcoat is annotating first front end, and the spring end is connected with the sliding block through the fixed slot, threaded rod integration is connected at annotating first front end, and the threaded rod side is equipped with the spread groove.

Preferably, the limiting block is of a hollow circular ring structure, the length of the limiting block is the same as that of the injection head, and the diameter of the limiting block is the same as that of the sliding groove.

Preferably, the sliding block is of a hollow cylindrical structure, the diameter of the notch at the front end of the sliding block is larger than that of the injection head, and the diameter of the sliding block is the same as that of the rubber pad.

Preferably, the length of the limiting rod is the same as the thickness of the limiting block, the diameter of the limiting rod is the same as the width of the limiting groove, and the limiting rod is symmetrical about the center line of the sliding block.

Preferably, the limiting groove is of a hollow J-shaped structure, the length of the limiting groove is the same as that of the needle head, and the limiting groove is symmetrical about the central line of the limiting block.

Preferably, the fixing groove is a hollow annular structure, and the diameter of the fixing groove is the same as that of the spring.

Compared with the prior art, the beneficial effects of the utility model are that: the needle head at the front part of the retractable safety syringe is fixed through the pintle, so that a user can conveniently install and replace the needle head, and meanwhile, the sliding block can be fixedly stretched and contracted by being attached to the limiting block under the action of the spring, so that the injury of the syringe needle to the user is avoided, and the safety of the syringe is improved;

1. the needle head slides in along the fixed groove on the side surface of the threaded rod, and the needle head is limited and fixed through the pintle, so that the installation operation of the injection needle head is greatly simplified, and the user can conveniently replace the injection needle head of the injector;

2. the sliding block slides around along the stopper under the promotion of spring, and the inboard gag lever post laminating spacing groove of sliding block slides, and the effectual sliding block carries out the spacing of fore-and-aft position fixed, has ensured that the sliding block can have wraps up the syringe needle completely, has improved the security of syringe.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic side view of the sliding block of the present invention;

fig. 3 is a schematic view of the top view structure of the sliding block of the present invention.

In the figure: 1. an injection tube; 2. a piston; 3. a push rod; 4. a push handle; 5. a limiting block; 6. a slider; 7. a rubber pad; 8. a pintle; 9. a needle head; 10. a sliding groove; 11. injecting a head; 12. a limiting rod; 13. a limiting groove; 14. a spring; 15. fixing grooves; 16. connecting grooves; 17. a threaded rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a retractable safety injector comprises an injection tube 1, a piston 2, a push rod 3, a push handle 4, a limit block 5, a sliding block 6, a rubber pad 7, a pintle 8, a needle head 9, a sliding groove 10, an injection head 11, a limit rod 12, a limit groove 13, a spring 14, a fixed groove 15, a connecting groove 16 and a threaded rod 17, wherein the push handle 4 is connected with the piston 2 through the push rod 3, the injection tube 1 is arranged on the outer side of the piston 2, the injection head 11 is integrally connected with the front end of the injection tube 1, the limit block 5 is integrally connected on the outer side of the injection head 11, the surface of the limit block 5 is provided with the limit groove 13, the front end of the limit block 5 is provided with the sliding groove 10, the front end of the sliding block 6 is provided with the fixed groove 15, the rubber pad 7 is arranged on the front portion of the fixed groove 15, the inner side of the sliding block 6 is integrally connected, the threaded rod 17 is integrally connected to the front end of the injection head 11, a connecting groove 16 is arranged on the side edge of the threaded rod 17, and the threaded rod 17 is connected with the needle head 9 through the pintle 8.

Stopper 5 is hollow ring shape structure, and the length of stopper 5 is the same with the length of notes head 11 to the diameter of stopper 5 is the same with the diameter of sliding tray 10, makes stopper 5 can be effectual carry out spacing fixed to sliding block 6.

Sliding block 6 is hollow cylindrical structure, and the diameter of the 6 front end notches of sliding block is greater than the diameter of notes head 11 to the diameter of sliding block 6 is the same with the diameter of rubber pad 7, makes sliding block 6 can laminate stopper 5 slip that stretches out and draws back, thereby wraps up the protection with syringe needle 9.

The length of the limiting rod 12 is the same as the thickness of the limiting block 5, the diameter of the limiting rod 12 is the same as the width of the limiting groove 13, and the limiting rod 12 is symmetrical about the central line of the sliding block 6, so that the limiting rod 12 can be attached to the limiting groove 13 to slide.

The limiting groove 13 is of a hollowed-out J-shaped structure, the length of the limiting groove 13 is the same as that of the needle head 9, and the limiting groove 13 is symmetrical about the central line of the limiting block 5, so that the needle head 9 can slide and contract into the sliding block 6, and the safety of the injector is improved.

The fixed slot 15 is the annular structure of fretwork, and the diameter of fixed slot 15 is the same with the diameter of spring 14 for fixed slot 15 can fix spring 14 effectively, thereby makes spring 14 can promote the sliding block 6 and wholly slides.

The working principle is as follows: when the retractable safety syringe is used, the syringe is firstly switched to an injection state, referring to fig. 1 and fig. 2, the sliding block 6 is rotated and pulled backwards, the sliding block 6 is attached to the surface of the limiting block 5 and slides backwards, at the moment, the limiting rod 12 on the inner side of the sliding block 6 slides to the U-shaped groove at the bottom along the limiting groove 13 on the surface of the injection head 11, then the sliding block 6 is rotated reversely, the fixing groove 15 at the front end of the sliding block 6 slides to the U-shaped groove under the pushing of the spring 14, so that the threaded rod 17 at the front end of the syringe slides out of the sliding block 6, the needle 9 slides in along the connecting groove 16 on the side surface of the threaded rod 17, the needle bolt 8 rotates in along the threaded rod 17, and finally the fixed replacement operation of the.

Referring to fig. 1, 2 and 3, when injection is not needed, the sliding block 6 is pulled down and rotated, the limiting rod 12 on the inner side of the sliding block 6 rotates out of the U-shaped groove at the bottom of the limiting groove 13, the sliding block 6 is pushed to the top of the limiting groove 13 under the action of the spring 14, at this time, the needle 9 is completely wrapped by the sliding block 6, and when the sliding block 6 contacts an object, the limiting rod 12 is fixed at the top of the limiting groove 13, so that the needle 9 cannot slide out of the sliding block 6, and finally, the retraction protection operation of the syringe needle 9 is completed.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a but safe type syringe of retraction, is including pushing away handle (4), stopper (5), sliding block (6), spring (14) and threaded rod (17), its characterized in that: the push handle (4) is connected with the piston (2) through the push rod (3), the injection tube (1) is arranged on the outer side of the piston (2), the injection head (11) is integrally connected with the front end of the injection tube (1), the limiting block (5) is integrally connected with the outer side of the injection head (11), the surface of the limiting block (5) is provided with a limiting groove (13), the front end of the limiting block (5) is provided with a sliding groove (10), the front end of the sliding block (6) is provided with a fixed groove (15), the front part of the fixed groove (15) is provided with a rubber pad (7), the inner side of the sliding block (6) is integrally connected with a limiting rod (12), the spring (14) is sleeved on the front end of the injection head (11), the tail end of the spring (14) is connected with the sliding block (6) through the fixed groove (15), the threaded rod (17) is integrally connected with the front end, and the threaded rod (17) is connected with the needle (9) through the pintle (8).

2. A retractable safety syringe according to claim 1, wherein: the limiting block (5) is of a hollow circular ring structure, the length of the limiting block (5) is the same as that of the injection head (11), and the diameter of the limiting block (5) is the same as that of the sliding groove (10).

3. A retractable safety syringe according to claim 1, wherein: the sliding block (6) is of a hollow cylindrical structure, the diameter of a notch at the front end of the sliding block (6) is larger than that of the injection head (11), and the diameter of the sliding block (6) is the same as that of the rubber pad (7).

4. A retractable safety syringe according to claim 1, wherein: the length of the limiting rod (12) is the same as the thickness of the limiting block (5), the diameter of the limiting rod (12) is the same as the width of the limiting groove (13), and the limiting rod (12) is symmetrical about the center line of the sliding block (6).

5. A retractable safety syringe according to claim 1, wherein: the limiting groove (13) is of a hollowed J-shaped structure, the length of the limiting groove (13) is the same as that of the needle head (9), and the limiting groove (13) is symmetrical about the central line of the limiting block (5).

6. A retractable safety syringe according to claim 1, wherein: the fixing groove (15) is of a hollow annular structure, and the diameter of the fixing groove (15) is the same as that of the spring (14).