CN212629519U

CN212629519U - Split type animal syringe

Info

Publication number: CN212629519U
Application number: CN202020945152.XU
Authority: CN
Inventors: 薛渊
Original assignee: Shanghai Biological Electric Identification Co ltd
Current assignee: SHANGHAI BIODATA Co.,Ltd.; SHANGHAI BIOLOGICAL ELECTRIC IDENTIFICATION Co.,Ltd.
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-03-02
Anticipated expiration: 2030-05-29

Abstract

The utility model relates to a split type animal injector, which comprises a needle cylinder (1), a needle tube (2) and a push rod (3), the needle cylinder (1) comprises a front end (1a) and a rear end (1b), the needle tube (2) is detachably clamped and installed at the front end (1a) of the needle cylinder (1), the push rod (3) is slidably inserted into the needle cylinder (1) from the rear end (1b) of the needle cylinder (1), characterized in that a shoulder (32) is formed on the push rod (3) near the rear end (1b), the needle cylinder (1) forms a slightly inwardly extending flange (11) on the inner wall near the rear end (1b), the external diameter of the shoulder (32) is slightly larger than the internal diameter of the retaining edge (11), thereby limiting the backward movement of the shoulder (32) and preventing the push rod (3) from disengaging from the needle cylinder (1).

Description

Split type animal syringe

Technical Field

The utility model relates to an animal syringe, in particular to a split animal syringe.

Background

In order to identify pets such as cats and dogs, an electronic tag in the form of a glass tube needs to be injected into the body of an animal.

A traditional animal injector is disclosed in Chinese utility model patent 200720105992. X. It comprises a syringe, a needle tube and a push rod. Wherein, a glass tube electronic label is placed in the needle tube and is injected into the animal body through the push rod. However, the syringe is disposable because the syringe tube and the barrel are inseparable. After each injection, the syringe is discarded, which is costly to use and also causes environmental pollution.

The syringe tube and the syringe tube of the existing medical injector are separated from each other and can be used repeatedly, but the syringe tube and the syringe tube are fixed by friction force, so that the needle head and the syringe tube are prevented from being separated from each other. The resistance of animal fur tissue is large, so that the injector can be pulled out only by using large force, and the needle head and the needle cylinder can be separated when the injector is pulled out. Therefore, the structure of the existing medical injector is not suitable for being used on an animal injector. This is one of the reasons why the present animal syringes are all of disposable construction.

Another existing animal injector is disclosed in Chinese Utility model patent 201110030536.4. The syringe comprises a syringe, a needle tube and a push rod, wherein the push rod is slidably arranged in the syringe, and the needle tube is detachably arranged on the syringe. The front end of the needle cylinder is provided with a clamping part, the rear end of the needle tube is provided with a convex wing, and the needle tube is arranged on the needle cylinder through the matching of the convex wing and the clamping part. The syringe can be detached from the syringe, so that the injector can be used repeatedly, thereby reducing the use cost and being beneficial to environmental protection.

In the animal injector, the rear end of the needle cylinder is provided with the end cover for preventing the push rod from being pulled out of the needle cylinder by mistake. Therefore, the needle cylinder actually consists of two parts, and in order to install the end cover, the tail part of the needle cylinder is complex in structure and comprises the barb anti-falling device, so that the cost is high during mold manufacturing, and the assembly is not easy.

In addition, after the chip is driven into the animal body, the push rod needs to be pulled backwards manually to reset, so that the next chip can be implanted, and the operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an animal injector which is simple in manufacture and convenient in assembly.

In order to solve the technical problem, the utility model provides a split type animal syringe, including cylinder, needle tubing and push rod, the cylinder includes front end and rear end, needle tubing detachably block install in the front end of cylinder, the push rod is followed the rear end slidable of cylinder insert in the cylinder the push rod is close to rear end department is formed with the convex shoulder, the cylinder is being close to form the flange of inwards extending slightly on the inner wall of rear end, the external diameter of convex shoulder slightly is greater than the internal diameter of flange, thereby the restriction the convex shoulder removes backward, prevents the push rod breaks away from the cylinder.

Preferably, the middle portion of the push rod forms an elastic contact portion having a truncated olive shape with a convex middle portion and tapered sides, and a cavity is formed in the elastic contact portion to have elasticity, and the convex middle portion of the elastic contact portion can be maintained in contact with the inner wall of the cylinder.

Preferably, a spring is arranged on the top end of the push rod and used for enabling the push rod to reset when the push rod is released.

The utility model has the advantages of the following.

1. The matching of the shoulder and the retaining edge prevents the push rod from separating from the needle cylinder and plays a role in positioning. The structure is simple, the manufacture is convenient, and the cost is lower.

2. The elastic contact part with raised middle part can increase the friction force with the inner wall of the syringe, delay the propelling process and avoid over fast propelling speed.

3. The top end of the push rod is provided with a spring, so that the push rod can reset automatically when being released, and the operation is more convenient.

Drawings

Fig. 1 is a sectional view of the split animal syringe of the present invention.

Fig. 2 is an exploded view of the split animal injector of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 1.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Detailed Description

Referring to fig. 1 and 2, the split type animal injector of the present invention includes a syringe 1, a needle tube 2, and a push rod 3. The needle cartridge 1 comprises a front end 1a and a rear end 1 b. The needle tube 2 is detachably mounted on the front end 1a of the needle cylinder 1, and the needle 20 is located at the distal end of the needle tube 2. The push rod 2 is inserted into the needle cylinder 1 from the rear end 1b of the needle cylinder 1, the top end of the push rod can penetrate out of the needle cylinder 1 and enter the needle tube 2, and the glass tube electronic tag 4 in the push rod is pushed out and injected into an animal body.

The intermediate portion of the push rod 3 forms an elastic contact portion 30. The elastic contact portion 30 has a truncated olive shape with a convex center and tapered sides, and a cavity 31 is formed in the elastic contact portion 30 to give it elasticity. The middle convex part of the elastic contact part 30 can keep in contact with the inner wall of the needle cylinder 1, so that the push rod 3 generates certain resistance when the needle cylinder 1 moves, the propelling process is delayed, and the control of an operator is convenient, so that the speed is not too high.

A shoulder 32 is formed on the rear side of the resilient contact portion 30 of the plunger 3, while the needle cylinder 1 forms a slightly inwardly extending ledge 11 on the inner wall near the rear end 1 b. The outer diameter of the shoulder 32 is slightly larger than the inner diameter of the stopper 11, thereby stopping the rearward movement of the shoulder 32 and preventing the plunger 3 from being separated from the cylinder 1. During actual assembly, the push rod 3 is inserted into the needle cylinder 1 by using a tooling fixture, and the shoulder 32 moves forwards to pass over the stop edge 11, so that the anti-dropping and positioning effects are achieved.

The top end of the push rod 3 is provided with a spring 33, and when the push rod 3 is pushed forwards to drive the electronic tag 4 into the pet body, the spring 33 is compressed. When the push rod 3 is released, the push rod 3 can automatically reset by the elasticity of the spring 33 to implant the next chip, so that the operation is more convenient and simpler.

The syringe 1 and the needle tube 2 of the present invention are detachably mounted on the front end 1a of the syringe 1. The construction and manner of assembly and disassembly is similar to that disclosed in prior art 201110030536.4 and, therefore, will not be described in detail.

Therefore, the engaging structure of the needle tube and the needle cylinder of the present invention is not limited to the structure disclosed in the above embodiment, and any equivalent obtained according to the teaching of the present invention is included in the scope of the present invention.

Claims

1. The utility model provides a split type animal syringe, includes cylinder (1), needle tube (2) and push rod (3), cylinder (1) includes front end (1a) and rear end (1b), needle tube (2) detachably block install in front end (1a) of cylinder (1), push rod (3) follow rear end (1b) slidable of cylinder (1) insert in cylinder (1), characterized by, be close to push rod (3) rear end (1b) department is formed with convex shoulder (32), cylinder (1) forms on the inner wall near rear end (1b) fender edge (11) that slightly inwards extends, the external diameter of convex shoulder (32) slightly is greater than the internal diameter of fender edge (11), thereby restrict convex shoulder (32) rearward movement, prevent push rod (3) to break away from cylinder (1).

2. Split type animal injector according to claim 1, characterized in that the middle part of the push rod (3) forms an elastic contact part (30), the elastic contact part (30) is in the shape of truncated olive with a convex middle part and tapered two sides, and a cavity (31) is formed in the elastic contact part (30) to have elasticity, and the convex middle part of the elastic contact part (30) can be kept in contact with the inner wall of the syringe (1).

3. The split-type animal injector according to claim 1, characterized in that a spring (33) is provided on the top end of the push rod (3) for resetting the push rod (3) when the push rod (3) is released.