CN213789343U

CN213789343U - Safety syringe with telescopic needle head function

Info

Publication number: CN213789343U
Application number: CN202022328225.3U
Authority: CN
Inventors: 杨娟; 江燕
Original assignee: Tongji Medical College of Huazhong University of Science and Technology
Current assignee: Tongji Medical College of Huazhong University of Science and Technology
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-07-27
Anticipated expiration: 2030-10-19

Abstract

The utility model discloses a take safety syringe of flexible syringe needle function, the female joint comprises an outer tube, the inside inner tube that is equipped with of outer tube, the inner tube outside and movable block fixed connection, be equipped with movable block assorted spout on the outer tube, the spout below is equipped with the fixed slot, the inner tube below is linked together with the connecting pipe, the connecting pipe below is linked together with syringe needle installation pipe, the connecting pipe below is equipped with the fixed block of two symmetries, the outer tube bottom can solid fixed ring. This take safety syringe of flexible syringe needle function, the inner tube is connected with outer tube accessible fixed block and solid fixed ring's cooperation to get it filled and inject, after the injection is accomplished, the fixed block breaks away from with solid fixed ring, under the effect of spring force, the syringe needle installation pipe drives the syringe needle and gets into in the outer tube, reaches the effect that the syringe needle was retrieved, and the effectual syringe needle that has avoided exposing leads to the condition emergence of medical personnel injury.

Description

Safety syringe with telescopic needle head function

Technical Field

The utility model relates to the technical field of syringes, in particular to a safety syringe with a telescopic needle head function.

Background

Syringes are a common medical device. As early as the 15 th century, kathler, italian, proposed the principle of the syringe. The safety syringe is characterized in that the needle head is mainly used for extracting or injecting gas or liquid, due to the limitation of the existing needle head design, when medical workers dispense and pull out needle caps, the needle stick injury often occurs when the needle is pulled out after the injection is finished, so that the safety syringe is particularly important, the structure is complicated due to the increase of functions, the processing precision is improved, the assembly difficulty is increased, and the cost is obviously changed. The material consumption is great, and the mould structure is comparatively complicated, and manufacturing cost is higher, and the appearance is more than other syringe increases, makes it to be accepted widely by market to have certain difficulty. To this end, we propose a safety syringe with retractable needle function.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take safety syringe of flexible syringe needle function to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a safety syringe of flexible syringe needle function in area, includes the outer tube, the outer tube below is linked together with the outlet pipe, the inside inner tube that is equipped with of outer tube, inner tube outside and movable block fixed connection, be equipped with movable block assorted spout on the outer tube, the spout below is equipped with the fixed slot, the movable block extends to the outer tube outside, the inner tube below is linked together with the connecting pipe, the connecting pipe below is linked together with the syringe needle installation pipe, the connecting pipe below is equipped with the fixed block of two symmetries, the outer tube bottom can solid fixed ring, gu fixed ring is close to syringe needle installation pipe one side and is equipped with logical groove, gu fixed ring is located logical groove outside and is equipped with the draw-in groove with fixed block assorted, the connecting pipe overcoat has the spring, spring top and inner tube fixed connection, spring below and solid fixed ring fixed connection.

Preferably, a push rod is arranged inside the inner tube, the push rod is located at one end of the inner tube and fixedly connected with the piston, a sealing gasket is arranged on one side, away from the push rod, of the piston, and one end, away from the piston, of the push rod is fixedly connected with the push plate.

Preferably, the outer side of the end part of the outer tube far away from the outlet tube is fixedly connected with the pressing block.

Preferably, the cross-section of the outlet tube is larger than the cross-section of the needle mounting tube after the needle is mounted.

Preferably, the surface of one side of the movable block, which is far away from the outer pipe, is provided with an anti-skid groove.

Compared with the prior art, the beneficial effects of the utility model are that: this safety syringe of flexible syringe needle function in area, the inner tube is connected with outer tube accessible fixed block and solid fixed ring's cooperation, thereby get it filled and inject, after the injection is accomplished, the fixed block breaks away from with solid fixed ring, under the effect of spring force, the syringe needle installation pipe drives the syringe needle and gets into in the outer tube, reach the effect that the syringe needle was retrieved, the effectual syringe needle of having avoided exposing leads to the injured condition of medical personnel to take place, the device is in the convenient use, can realize the quick extraction and the injection of liquid, can effectually protect medical personnel.

Drawings

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

fig. 2 is a schematic diagram of the explosion structure of the present invention;

fig. 3 is a cross-sectional view of the present invention;

in the figure: the needle fixing device comprises an outer tube 1, an outlet tube 2, an inner tube 3, a sliding groove 4, a movable block 5, a fixing groove 6, a connecting tube 7, a needle mounting tube 8, a fixing block 9, a fixing ring 10, a through groove 11, a clamping groove 12, a spring 13, a push rod 14, a push plate 15, a piston 16, a sealing gasket 17, a pressing block 18 and an anti-sliding groove 19.

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 safety syringe with a telescopic needle function comprises an outer tube 1, wherein the lower part of the outer tube 1 is communicated with an outlet tube 2, an inner tube 3 is arranged inside the outer tube 1, the outer side of the inner tube 3 is fixedly connected with a movable block 5, a sliding groove 4 matched with the movable block 5 is arranged on the outer tube 1, a fixing groove 6 is arranged below the sliding groove 4, the movable block 5 extends to the outer side of the outer tube 1, the inner tube 3 can move inside the outer tube 1 by pushing the movable block 5, the movable block 5 is matched with the fixing groove 6, so that the movable block 5 can be limited by the fixing groove 6, the position of the inner tube 3 is fixed, the lower part of the inner tube 3 is communicated with a connecting tube 7, the lower part of the connecting tube 7 is communicated with a needle mounting tube 8, two symmetrical fixing blocks 9 are arranged below the connecting tube 7, a fixing ring 10 can be arranged at the bottom of the outer tube 1, a through groove 11 is arranged on one side, which is close to the needle mounting tube 8, fixed ring 10 is located and is equipped with the draw-in groove 12 with fixed block 9 assorted outside leading to groove 11, 7 overcoat knots of connecting pipe have spring 13, spring 13 top and 3 fixed connection of inner tube, spring 13 below and fixed ring 10 fixed connection, 9 accessible draw-in grooves 12 of fixed block, when movable block 5 is located fixed slot 6 inside, fixed block 9 produces the dislocation with draw-in groove 12, and fixed block 9 and fixed ring 10 joint this moment to reach fixed effect.

Further, the inside push rod 14 that is equipped with of inner tube 3, push rod 14 is located 3 one ends of inner tube and piston 16 fixed connection, piston 16 keeps away from 14 one side of push rod and is equipped with sealed pad 17, piston 16 one end and push pedal 15 fixed connection are kept away from to push rod 14, promote push pedal 15, and push pedal 15 drives push rod 14 and piston 16 at 3 internal motion of inner tube to play the effect of getting it filled and injecting.

Furthermore, the outer side of the end part of the outer tube 1 far away from the outlet tube 2 is fixedly connected with a pressing block 18, and the pressing block 18 is matched with the push plate 15, so that the push plate 15 of the push plate can be conveniently pressed and pulled.

Furthermore, the section of the outlet pipe 2 is larger than that of the needle mounting pipe 8 after the needle is mounted, so that the needle mounting pipe 8 mounted with the needle can enter the outer pipe 1 together with the needle.

Furthermore, the surface of one side of the movable block 5, which is far away from the outer tube 1, is provided with an anti-slip groove 19, and the anti-slip groove 19 can increase the friction force between the finger part and the movable block 5.

Specifically, the utility model discloses in, after the syringe takes out, promote movable block 5, movable block 5 drives inner tube 3 this moment, connecting pipe 7 and 8 downstream of syringe needle installation pipe, it is to reach 4 lower extremes of spout when movable block 5, rotate movable block 5, make movable block 5 and fixed slot 6 joint, then, fixed block 9 passes through behind draw-in groove 12 with solid fixed ring 10 joint, syringe needle installation pipe 8 passes through outlet pipe 2 and is located the 2 outsides of outlet pipe, the compression of spring atress, afterwards, the syringe can get it filled or inject, after the use is accomplished, promote movable block 5 and fixed slot 6 and break away from, fixed block 9 breaks away from with solid fixed ring 10 mutually simultaneously, under the effect of spring 13 elasticity, syringe needle installation pipe 8 drives inside the syringe needle gets into the outer tube.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a safety syringe of area extension needle head function, includes outer tube (1), its characterized in that: the outer tube (1) below is communicated with the outlet tube (2), the inner tube (3) is arranged inside the outer tube (1), the outer side of the inner tube (3) is fixedly connected with the movable block (5), the outer tube (1) is provided with a sliding chute (4) matched with the movable block (5), a fixing groove (6) is arranged below the sliding chute (4), the movable block (5) extends to the outer side of the outer tube (1), the lower side of the inner tube (3) is communicated with the connecting tube (7), the lower side of the connecting tube (7) is communicated with the needle mounting tube (8), two symmetrical fixing blocks (9) are arranged below the connecting tube (7), the bottom of the outer tube (1) can be provided with a fixing ring (10), one side of the fixing ring (10) close to the needle mounting tube (8) is provided with a through groove (11), the fixing ring (10) is arranged outside the through groove (11) and is provided with a clamping groove (12) matched with the fixing block (9), connecting pipe (7) overcoat knot has spring (13), spring (13) top and inner tube (3) fixed connection, spring (13) below and solid fixed ring (10) fixed connection.

2. A safety syringe with a retractable needle function according to claim 1, characterized in that: the inner tube (3) is inside to be equipped with push rod (14), push rod (14) are located inner tube (3) one end and piston (16) fixed connection, push rod (14) one side is kept away from in piston (16) is equipped with sealed pad (17), piston (16) one end and push pedal (15) fixed connection are kept away from in push rod (14).

3. A safety syringe with a retractable needle function according to claim 1, characterized in that: the outer side of the end part of one side of the outer tube (1) far away from the outlet tube (2) is fixedly connected with a pressing block (18).

4. A safety syringe with a retractable needle function according to claim 1, characterized in that: the section of the outlet pipe (2) is larger than that of the needle mounting pipe (8) after the needle is mounted.

5. A safety syringe with a retractable needle function according to claim 1, characterized in that: the surface of one side, far away from the outer pipe (1), of the movable block (5) is provided with an anti-skidding groove (19).