CN211244601U

CN211244601U - Improved structure of needleless liquid feeding joint

Info

Publication number: CN211244601U
Application number: CN201921590428.0U
Authority: CN
Inventors: 葛士杰; 陈俊豪
Original assignee: Dongguan Jiangze Precision Mould Plastic Cement Co ltd
Current assignee: Dongguan Jiangze Precision Mould Plastic Cement Co ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-08-14
Anticipated expiration: 2029-09-24

Abstract

The utility model discloses an improved structure of a needle-free liquid feeding joint, which comprises a plastic upper cover, a plastic lower cover and an elastic valve body, wherein the plastic upper cover is provided with two liquid outlets, each liquid outlet comprises an outer baffle wall and an inner connecting pipe arranged at the inner side of the outer baffle wall, and the outer baffle wall is an annular blind pipe; the plastic lower cover and the plastic upper cover are connected through ultrasonic hot melting to form a transfusion cavity, one end of the plastic lower cover, which is far away from the plastic upper cover, is provided with a liquid inlet, and a liquid inlet pipe is arranged on the inner side of the liquid inlet; the elastic valve body is arranged in the infusion cavity and comprises a large end part, a small end part and a pressing part arranged between the large end part and the small end part, the large end part is fixedly connected with the inner wall of the plastic upper cover, and the small end part is connected with the inner wall of the liquid inlet. The utility model discloses possess simple structure, the liquid outlet after the improvement is connected with the infusion rubber tube of high quality, and the product yield is high, can not appear gluing askew, weeping, gas leakage and harm life safety's the condition emergence.

Description

Improved structure of needleless liquid feeding joint

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an improved structure of a needle-free liquid feeding joint.

Background

At present, the existing intravenous injection in the market of China is mostly applied to the injection of human bodies or animals, the injection difficulty is small, the injection mode is easy to accept by consumers, and before the injection, medicines are generally required to be filled in a liquid injection bottle through a needleless liquid adding connector. The needleless liquid feeding connector used in the hospital at present has a plurality of kinds, but the technical principle is different from the same, for example, fig. 1 provides a needleless liquid feeding connector, which comprises a lower cover (21) and an upper cover (22), the lower cover (21) and the upper cover (22) are hermetically connected to form a cavity for storing injection, a valve body (23) is installed in the cavity, a liquid inlet port (24) is formed in the lower cover (21), one end of the valve body (23) is fixedly connected with the inner wall of the upper cover (21), the other end of the valve body is hermetically connected with the liquid inlet port (24), two liquid outlet ports (25) are formed in the upper cover (22), each liquid outlet port is provided with a step (26) for connecting an infusion apparatus guide tube (27), and the end of the infusion apparatus guide tube (27) is adhered with glue after being butted with the step (26). When the infusion bottle is used, the liquid injector (28) pierces the valve body (23) at the infusion liquid inlet port (24), and the medicine in the liquid injector (28) is injected into the liquid injection bottle, although the needle-free liquid injection joint adopting the structure can achieve the purpose of needle-free liquid injection, the quality of the connection between the infusion apparatus conduit (27) and the liquid outlet port (25) is poor, and the needle-free liquid injection joint is inconvenient to adhere, is easy to be adhered askew, leads to high product reject ratio, and is easy to leak liquid, leak gas and harm to life safety when being set. Therefore, there is a need for an improved structure of the conventional needleless filling connector.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a needleless liquid feeding connects improvement structure, possess simple structure, the liquid outlet after the improvement is connected with the infusion rubber tube of high quality, and the product yield is high, can not appear gluing askew, weeping, gas leakage and harm life safety's the condition emergence, has solved the problem that above-mentioned technical background provided.

In order to achieve the above object, the utility model provides a following technical scheme: an improved structure of a needleless liquid feeding joint comprises a plastic upper cover, wherein two liquid outlets are formed in the plastic upper cover, the two liquid outlets are arranged in a V shape, each liquid outlet comprises an outer baffle wall and an inner connecting pipe arranged on the inner side of the outer baffle wall, and the outer baffle wall is an annular blind pipe; the lower plastic cover and the upper plastic cover are connected through ultrasonic hot melting to form a transfusion cavity, one end of the lower plastic cover, far away from the upper plastic cover, is provided with a liquid inlet, and the inner side of the liquid inlet is provided with a liquid inlet pipe; the elastic valve body is installed in the infusion cavity, and the elastic valve body comprises a large end part, a small end part and a pressing part arranged between the large end part and the small end part, the large end part, the small end part and the pressing part are integrally formed, wherein the large end part is fixedly connected with the inner wall of the plastic upper cover, the small end part is connected with the inner wall of the liquid inlet, and the liquid inlet pipe is completely sealed.

Preferably, the plastic lower cover is provided with an external thread which is used for connecting a liquid storage container and is positioned outside the liquid inlet.

Preferably, the elastic valve body is made of butyl rubber or silicon rubber.

Preferably, the inner connecting pipe and the liquid inlet pipe are both communicated with the transfusion cavity.

Preferably, the inner pipe is slightly higher than the outer retaining wall.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a set up two liquid outlets, every liquid outlet includes inner union and outer wall that keeps off, it is annular blind hole to keep off the wall outward should keep off the wall outward, with transfusion system catheterization insert in keeping off the wall outward when using, and scribble glue and make transfusion system pipe and outer wall inside paste completely, inner union height goes out and keeps off wall 2cm-5cm outward, can effectually prevent that glue from getting into inner union when pasting transfusion system pipe, influence the quality of product, liquid outlet after the improvement is good with the quality of infusion rubber tube connection, the product yield is high, can not appear gluing askewly, weeping gas leakage and the condition of endangering life safety take place.

Drawings

FIG. 1 is a cross-sectional view of a prior art needleless access charging connector;

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

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

The reference numerals and names in the figures are as follows:

1. a plastic upper cover; 2. a plastic lower cover; 3. an elastic valve body; 4. a liquid outlet; 5. an outer retaining wall; 6. an inner connecting pipe; 7. a liquid inlet; 8. a transfusion cavity; 9. a large end portion; 10. a pressing part; 11. a small end portion; 12. a liquid inlet pipe; 13. and (4) external threads.

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. 2 to fig. 3, the present invention provides an embodiment: an improved structure of a needleless liquid feeding joint comprises an upper plastic cover 1, a lower plastic cover 2 and an elastic valve body 3, wherein the upper plastic cover 1 is provided with two liquid outlets 4, the two liquid outlets 4 are arranged in a V shape, each liquid outlet 4 comprises an outer baffle wall 5 and an inner connecting pipe 6 arranged on the inner side of the outer baffle wall 5, and the outer baffle wall 5 is an annular blind pipe; the plastic lower cover 2 and the plastic upper cover 1 are connected through ultrasonic hot melting to form a transfusion cavity 8, one end of the plastic lower cover 2, which is far away from the plastic upper cover 1, is provided with a liquid inlet 7, and the inner side of the liquid inlet 7 is provided with a liquid inlet pipe 12; the elastic valve body 3 is arranged in the transfusion cavity 8, the elastic valve body 3 comprises a large end part 9, a small end part 11 and a pressing part 10 arranged between the large end part 9 and the small end part 11, the large end part 9, the small end part 11 and the pressing part 10 are integrally formed, wherein the large end part 9 is fixedly connected with the inner wall of the plastic upper cover 1, the small end part 11 is connected with the inner wall of the liquid inlet 7, and the liquid inlet pipe 12 is completely sealed.

An external thread 13 for connecting a liquid storage container is arranged on the plastic lower cover 2 and positioned outside the liquid inlet 7; the elastic valve body 3 is made of butyl rubber or silicon rubber, and in the embodiment, the elastic valve body 3 is preferably made of medical silicon rubber; the inner connecting pipe 6 and the liquid inlet pipe 12 are both communicated with the transfusion cavity 8; the inner connecting pipe 6 is slightly higher than the outer baffle wall 5, so that the infusion tube can be conveniently communicated.

It should be noted that this embodiment mainly improves the liquid outlet of current needleless liquid feeding joint, liquid outlet 4 after the improvement includes outer wall 5 and the inner connecting tube 6 of keeping off, when assembling infusion pipe, only need with PVC or TPE and the infusion pipe of other elastic material preparation insert outer wall 5 of keeping off in, infusion pipe rises to rise to paste the outer wall of inner connecting tube 6 and the inner wall of outer wall 5 of keeping off, assist again and paste glue, reach fixed connection's purpose, liquid outlet 4 after the improvement is connected with the infusion rubber tube of high quality, the product yield is high, can not appear gluing askewly, the weeping, gas leakage and harm life safety's condition takes place.

When the needleless injector is used, the head tubule of the needleless injector presses the elastic valve body 3 from the exposed small end part 11 surface of the elastic valve body 3, the elastic valve body 3 is pressed into the inner cavity of the plastic lower cover 2, then injection liquid flows to the liquid outlet 4 on the plastic upper cover 1 from the infusion cavity 8 in the plastic lower cover 2, and then enters the liquid storage container through the infusion apparatus conduit connected with the liquid outlet 4, after the injection is completed, the needleless injector is pulled out, the elastic valve body 3 rebounds to the original state under the action of self elasticity, and the liquid inlet pipe 12 on the plastic lower cover 2 is plugged again.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An improvement structure that needleless liquid feeding connects which characterized in that: the device comprises an upper plastic cover (1), wherein two liquid outlets (4) are formed in the upper plastic cover (1), the two liquid outlets (4) are arranged in a V shape, each liquid outlet (4) comprises an outer baffle wall (5) and an inner connecting pipe (6) arranged on the inner side of the outer baffle wall (5), and the outer baffle wall (5) is an annular blind pipe;

the infusion device comprises a plastic lower cover (2), wherein the plastic lower cover (2) and a plastic upper cover (1) are connected through ultrasonic hot melting to form an infusion cavity (8), a liquid inlet (7) is formed in one end, far away from the plastic upper cover (1), of the plastic lower cover (2), and a liquid inlet pipe (12) is arranged on the inner side of the liquid inlet (7);

elastic valve body (3), install in infusion cavity (8) elastic valve body (3), and elastic valve body (3) including big tip (9), little tip (11) and set up pressing splenium (10) between big tip (9) and little tip (11), big tip (9), little tip (11) and pressing splenium (10) integrated into one piece, wherein big tip (9) and plastic upper cover (1) inner wall fixed connection, little tip (11) and inlet (7) inner wall connection to totally enclosed feed liquor pipe (12).

2. The improved structure of the needleless liquid feeding joint of claim 1, wherein: and an external thread (13) used for connecting a liquid storage container is arranged on the plastic lower cover (2) and positioned outside the liquid inlet (7).

3. The improved structure of the needleless liquid feeding joint of claim 1, wherein: the elastic valve body (3) is made of butyl rubber or silicon rubber.

4. The improved structure of the needleless liquid feeding joint of claim 1, wherein: the inner connecting pipe (6) and the liquid inlet pipe (12) are both communicated with the transfusion cavity (8).

5. The improved structure of the needleless liquid feeding joint of claim 4, wherein: the inner connecting pipe (6) is slightly higher than the outer retaining wall (5).