CN219208473U

CN219208473U - Safety syringe with anti-drop structure

Info

Publication number: CN219208473U
Application number: CN202222880068.6U
Authority: CN
Inventors: 张鑫波
Original assignee: Changzhou Huichun Medical Equipment Co ltd
Current assignee: Changzhou Huichun Medical Equipment Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-06-20
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a safety syringe with an anti-falling structure, which comprises a syringe and a needle, wherein a piston rod is connected to the inner side of the syringe in a sliding way, a connecting pipe is fixedly connected to the middle part of one end of the syringe, a sleeve is fixedly connected to one end of the needle, a connecting ring is fixedly connected to the outer side of one end of the sleeve, which is far away from the needle, a sealing gasket is arranged at one end, which is close to the needle, of an inner cavity of the sleeve, an annular cavity is arranged in the sealing gasket, a pushing block is fixedly connected to one end, which is far away from the syringe, of the piston rod, and fixing blocks are symmetrically and fixedly connected to two sides, which are close to one end of the connecting pipe, of the syringe. This safety syringe with anti-drop structure, the connecting ring through setting up, fixed block, the mutually supporting of gag lever post be convenient for syringe needle and connecting pipe be fixed, cup joint the back and carry out spacingly through the gag lever post, the condition that syringe needle and cylinder separated can not appear, convenient to use.

Description

Safety syringe with anti-drop structure

Technical Field

The utility model relates to the field of syringes, in particular to a safety syringe with an anti-falling structure.

Background

The injector is a common medical appliance, and consists of a needle cylinder with a small hole at the front end and a piston core rod matched with the needle cylinder, and is used for injecting a small amount of liquid or injecting the liquid into areas inaccessible to other methods or extracting the liquid or the gas from the places, wherein the liquid or the gas is sucked from the small hole at the front end of the needle cylinder when the core rod is pulled out, the liquid or the gas is extruded when the core rod is pushed in, and the process of extracting or injecting the gas or the liquid by using the injector and a needle is called injection, and is mainly used for injecting liquid medicine or liquid suction. The traditional syringe consists of a needle, a needle tube and a needle core, wherein the needle is sleeved and connected through a hard tubule at the front end of the needle tube, so that medical treatment or blood extraction can be carried out, and the needle of the syringe is easily detached from the needle tube.

Because syringe needle and needle tubing are cup jointed, pull down very easily, therefore have the risk that syringe needle and needle tubing break away from when the injection is accomplished, can bring certain discomfort to the patient, in addition, current syringe promotes the piston rod when the injection and injects, be the thumb when promoting the piston rod, forefinger and middle finger generally can put and carry out supplementary injection on the arch of needle tubing tip both sides, but the contact of thumb, forefinger, middle finger and syringe only relies on sliding friction, does not have protective structure, if sweat or long-time use after, medical personnel's finger can be sour for syringe and finger take place to drop, the security is relatively poor.

Therefore, it is necessary to provide a safety syringe having an anti-drop structure to solve the above problems.

Disclosure of Invention

The utility model mainly aims to provide a safety syringe with an anti-falling structure, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a safety syringe with anti-drop structure, includes cylinder and syringe needle, the inboard sliding connection of cylinder has the piston rod, the one end middle part fixedly connected with connecting pipe of cylinder, the one end fixedly connected with sleeve of syringe needle, the one end outside fixedly connected with go-between that the sleeve kept away from the syringe needle, the one end that the sleeve inner chamber is close to the syringe needle is provided with sealing washer, sealing washer's inside is provided with annular cavity, the one end fixedly connected with ejector pad that the piston rod kept away from the cylinder, the cylinder is close to the both sides symmetry fixedly connected with fixed block of connecting pipe one end, the gag lever post is inserted to the upper end of fixed block, the cylinder is kept away from the both sides symmetry fixedly connected with auxiliary bump of connecting pipe one end;

the auxiliary protruding block is characterized in that a rubber protruding strip is embedded in one side of the auxiliary protruding block, an elastic belt is fixedly connected to one side of the pushing block, connecting plates are symmetrically and fixedly connected to two ends of one side, away from the piston rod, of the pushing block, a concave anti-falling frame is arranged at one end, away from the pushing block, of each connecting plate, a movable groove is symmetrically formed in the concave anti-falling frame, facing to the two ends of one side of the connecting plate, of each connecting plate, and an elastic piece is fixedly connected to the tail end of an inner cavity of each movable groove.

Preferably, the sleeve is sleeved outside the connecting pipe, the inner wall of the sleeve is attached to the outer side of the connecting pipe and is in sliding fit with the outer side of the connecting pipe, and one end, away from the needle cylinder, of the connecting pipe is in abutting fit with the sealing gasket.

Preferably, the connecting ring is in contact fit with one end of the needle cylinder close to the connecting pipe.

Preferably, the limit rod is in interference fit with the outer side of the connecting ring, and the limit rod is in sliding fit with the fixed block.

Preferably, the rubber raised strips and the elastic belts are positioned on one side of the auxiliary protruding blocks, which is opposite to the pushing blocks, and the elastic belts are positioned on the outer sides of the rubber raised strips.

Preferably, the concave anti-falling frame is sleeved outside the two connecting plates through the movable groove, the inner wall of the movable groove is in sliding fit with the outer wall of the connecting plates, and one end of the elastic piece is fixedly connected with the end parts of the connecting plates.

Advantageous effects

Compared with the prior art, the utility model provides the safety syringe with the anti-falling structure, which has the following beneficial effects:

1. this safety syringe with anti-drop structure, the connecting ring through setting up, the fixed block, the mutually supporting of gag lever post be convenient for syringe needle and connecting pipe are fixed, cup joint the back and carry out spacingly through the gag lever post, the condition that syringe needle and cylinder separated can not appear, convenient to use, sealing washer and annular cavity's cooperation sets up the leakproofness of multiplicable connecting pipe and telescopic joint department, the connecting pipe contradicts with sealing washer, sealing washer deformation produces reverse effort under annular cavity's effect, elastic contact, the leakproofness is good.

2. This safety syringe with anti-drop structure can carry out certain spacing to forefinger and middle finger through the rubber sand grip that sets up, elastic webbing, has increased frictional force, can reduce the risk that forefinger, middle finger and auxiliary bump break away from, can carry out spacingly to the thumb through the spill anticreep frame that sets up, connecting plate, elastic component mutually support, has increased frictional force, has reduced the risk that thumb and ejector pad break away from.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the cartridge of the present utility model shown removed from the syringe;

FIG. 3 is a schematic cross-sectional view of a sleeve according to the present utility model;

FIG. 4 is a schematic view of the overall structure of the fixed block and stop lever of the present utility model;

FIG. 5 is an enlarged view of the utility model at A in FIG. 1;

fig. 6 is a schematic cross-sectional view of the concave drop-preventing frame of the present utility model.

In the figure: 1. a needle cylinder; 2. a movable groove; 3. a piston rod; 4. a pushing block; 5. a needle; 6. a sleeve; 7. an auxiliary bump; 8. a concave anti-falling frame; 9. a connecting pipe; 10. a connecting ring; 11. a fixed block; 12. a limit rod; 13. a sealing gasket; 14. an annular cavity; 15. rubber protruding strips; 16. an elastic belt; 17. a connecting plate; 18. an elastic member.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-6, a safety syringe with anti-drop structure comprises a syringe 1 and a needle 5, wherein the inner side of the syringe 1 is connected with a piston rod 3 in a sliding way, the middle part of one end of the syringe 1 is fixedly connected with a connecting pipe 9, one end of the needle 5 is fixedly connected with a sleeve 6, the sleeve 6 is sleeved outside the connecting pipe 9, the inner wall of the sleeve 6 is jointed with the outer side of the connecting pipe 9 in a sliding fit manner, a connecting ring 10 is fixedly connected with the outer side of one end of the sleeve 6 away from the needle head 5, the connecting ring 10 is in contact fit with one end of the needle cylinder 1 close to the connecting pipe 9, one end of the inner cavity of the sleeve 6 close to the needle head 5 is provided with a sealing gasket 13, one end of the connecting pipe 9 away from the needle cylinder 1 is in interference fit with the sealing gasket 13, an annular cavity 14 is arranged in the sealing gasket 13, the sealing performance of the joint of the connecting pipe 9 and the sleeve 6 can be increased by the matched arrangement of the sealing gasket 13 and the annular cavity 14, the connecting pipe 9 is in interference fit with the sealing gasket 13, the sealing washer 13 deforms to generate reverse acting force under the action of the annular cavity 14, the elastic contact and the tightness are good, the pushing block 4 is fixedly connected with one end of the piston rod 3 far away from the needle cylinder 1, the fixing blocks 11 are symmetrically and fixedly connected with two sides of one end of the needle cylinder 1 close to the connecting pipe 9, the limit rod 12 is inserted at the upper end of the fixing block 11, the limit rod 12 is in abutting fit with the outer side of the connecting ring 10, the limit rod 12 is in sliding fit with the fixed block 11, the needle 5 and the connecting pipe 9 are convenient to be connected and fixed through the mutual fit of the connecting ring 10, the fixed block 11 and the limit rod 12, the limit rod 12 is used for limiting after the sleeve joint, the condition that the needle 5 is separated from the needle cylinder 1 can not occur, the use is convenient, and auxiliary lugs 7 are symmetrically and fixedly connected with the two sides of one end of the needle cylinder 1 far away from the connecting pipe 9;

one side of the auxiliary protruding block 7 is embedded with a rubber protruding strip 15, one side of the pushing block 4 is fixedly connected with an elastic belt 16, the rubber protruding strip 15 and the elastic belt 16 are positioned on one side of the auxiliary protruding block 7, which is opposite to the pushing block 4, the elastic belt 16 is positioned on the outer side of the rubber protruding strip 15, and the index finger and the middle finger can be limited to a certain extent through the arranged rubber protruding strip 15 and the elastic belt 16, so that the friction force is increased, and the risk that the index finger, the middle finger and the auxiliary protruding block 7 are separated can be reduced;

the ejector pad 4 is kept away from the both ends symmetry fixedly connected with connecting plate 17 of piston rod 3 one side, the one end that two connecting plates 17 kept away from ejector pad 4 is provided with spill anticreep frame 8, the recess anticreep frame 8 has set up movable groove 2 towards the both ends symmetry of connecting plate 17 one side, the outside of two connecting plates 17 is located through movable groove 2 cover to spill anticreep frame 8, and the inner wall of movable groove 2 and the outer wall sliding fit of connecting plate 17, the terminal fixedly connected with elastic component 18 of movable groove 2 inner chamber, the one end of elastic component 18 and the tip fixed connection of connecting plate 17, can carry out spacingly to the thumb through the cooperation of spill anticreep frame 8 that sets up, connecting plate 17, elastic component 18, frictional force has been increased, the risk that thumb and ejector pad 4 break away from has been reduced.

It should be noted that, the safety syringe with the anti-drop structure is provided by the utility model, when in use, the connection and fixation of the needle 5 and the connecting pipe 9 are facilitated by the mutual cooperation of the connecting ring 10, the fixing block 11 and the limiting rod 12, the needle 5 is sleeved outside the connecting pipe 9 through the sleeve 6, the connecting pipe 9 is in contact with the sealing washer 13 until the connecting ring 10 contacts with the end part of the syringe 1, then the two limiting rods 12 are pushed, the end part of the limiting rod 12 is positioned at the outer side of the connecting ring 10 to block, the sealing washer 13 generates reverse acting force, the limiting rod 12 is abutted against the connecting ring 10, the limiting rod 12 is used for limiting after the sleeve joint, the situation that the needle 5 is separated from the syringe 1 does not occur, the sealing washer 13 and the annular cavity 14 are matched, the sealing washer 9 is abutted against the sealing washer 13, the annular cavity 14 deforms under the action of the sealing washer 13 to generate reverse acting force, the elastic contact is good, the index finger and the middle finger are respectively arranged at the outer sides of the two auxiliary lugs 7, the inner sides of the elastic band 16 is inserted, the elastic band 16 is used for limiting the elastic band 16 is used for blocking the thumb rest, the anti-drop elastic band 16 is further matched with the concave finger rest 8, the anti-drop elastic carrier 18 is further, the anti-drop elastic carrier 18 is arranged at the outer side of the concave finger rest 8 is further, and the anti-drop elastic carrier 18 is further friction-drop-free, the anti-drop risk is further increased, and the anti-drop effect is further improved, and the anti-drop effect is further, the anti-drop device 18 is matched with the concave elastic carrier 18 is further, and the concave carrier 18.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a safety syringe with anti-drop structure, includes cylinder (1) and syringe needle (5), its characterized in that: the inner side of the needle cylinder (1) is slidably connected with a piston rod (3), the middle part of one end of the needle cylinder (1) is fixedly connected with a connecting pipe (9), one end of the needle head (5) is fixedly connected with a sleeve (6), one end outer side of the sleeve (6) far away from the needle head (5) is fixedly connected with a connecting ring (10), one end of an inner cavity of the sleeve (6) close to the needle head (5) is provided with a sealing gasket (13), the inside of the sealing gasket (13) is provided with an annular cavity (14), one end of the piston rod (3) far away from the needle cylinder (1) is fixedly connected with a pushing block (4), two sides of the needle cylinder (1) close to one end of the connecting pipe (9) are symmetrically and fixedly connected with a fixing block (11), the upper end of the fixing block (11) is inserted with a limiting rod (12), and two sides of the needle cylinder (1) far away from one end of the connecting pipe (9) are symmetrically and fixedly connected with auxiliary bumps (7).

One side of supplementary lug (7) is inlayed and is equipped with rubber sand grip (15), one side fixedly connected with elastic webbing (16) of ejector pad (4), the ejector pad (4) is kept away from both ends symmetry fixedly connected with connecting plate (17) on one side of piston rod (3), two the one end that ejector pad (4) was kept away from to connecting plate (17) is provided with spill anticreep frame (8), spill anticreep frame (8) have offered movable groove (2) towards the both ends symmetry on one side of connecting plate (17), the terminal fixedly connected with elastic component (18) of movable groove (2) inner chamber.

2. A safety syringe having an anti-drop structure according to claim 1, wherein: the sleeve (6) is sleeved outside the connecting pipe (9), the inner wall of the sleeve (6) is attached to the outer side of the connecting pipe (9) in a sliding fit mode, and one end, away from the needle cylinder (1), of the connecting pipe (9) is in abutting fit with the sealing gasket (13).

3. A safety syringe having an anti-drop structure according to claim 1, wherein: the connecting ring (10) is in contact fit with one end of the needle cylinder (1) close to the connecting pipe (9).

4. A safety syringe having an anti-drop structure according to claim 1, wherein: the limiting rod (12) is in interference fit with the outer side of the connecting ring (10), and the limiting rod (12) is in sliding fit with the fixed block (11).

5. A safety syringe having an anti-drop structure according to claim 1, wherein: the rubber raised strips (15) and the elastic belts (16) are positioned on one side of the auxiliary protruding blocks (7) back to the pushing blocks (4), and the elastic belts (16) are positioned on the outer sides of the rubber raised strips (15).

6. A safety syringe having an anti-drop structure according to claim 1, wherein: the concave anti-falling frame (8) is sleeved outside the two connecting plates (17) through the movable groove (2), the inner wall of the movable groove (2) is in sliding fit with the outer wall of the connecting plates (17), and one end of the elastic piece (18) is fixedly connected with the end parts of the connecting plates (17).