阅读说明：本技术 一种正负压无针胶阀接头 (Positive and negative pressure non-needle glue valve joint ) 是由 刘云虎 于 2020-12-07 设计创作，主要内容包括：本发明涉及医疗用品领域,公开了一种正负压无针胶阀接头。该接头包括胶阀、上壳和下壳,胶阀顶部设有顶盖,内部设有空腔,上壳顶部设有开口,下壳底部设有出液口,出液口与空腔连通,胶阀上壳内,开口与顶盖相紧贴,上壳与下壳固定连接,胶阀的底边贴合在下壳内壁上,胶阀与上壳之间设有环形的液体滞留腔,在空腔内沿着胶阀纵向的设置有一条加厚层,加厚层起始于顶盖下端面。本接头内的胶阀能向固定方向倾斜,从而解决解决决注射口插入困难且不稳定的问题。(The invention relates to the field of medical supplies and discloses a positive and negative pressure non-needle-glue valve joint. This joint is including gluing the valve, epitheca and inferior valve, it is equipped with the top cap to glue the valve top, inside is equipped with the cavity, the epitheca top is equipped with the opening, the inferior valve bottom is equipped with the liquid outlet, liquid outlet and cavity intercommunication, in gluing the valve epitheca, the opening is hugged closely with the top cap mutually, epitheca and inferior valve fixed connection, the base laminating of gluing the valve is on the inferior valve inner wall, be equipped with annular liquid detention chamber between gluey valve and the epitheca, be provided with a thickening layer along gluing the valve is fore-and-aft in the cavity, the thickening layer begins terminal surface under the top cap. The rubber valve in the joint can incline towards the fixed direction, thereby solving the problem that the injection port is difficult to insert and unstable.)

1. A positive and negative pressure non-needle glue valve joint comprises a glue valve (1), an upper shell (2) and a lower shell (3);

the glue valve (1) comprises an upper half part, a lower half part and a sloping shoulder (17), wherein the radius of the upper half part is smaller than that of the lower half part, the upper half part and the lower half part are coaxial and fixedly connected through the sloping shoulder (17), a top cover (11) is arranged at the top end of the upper half part, and cavities (12) are formed in the upper half part and the lower half part of the glue valve (1);

the upper shell (2) comprises a head part, a tail part and an inclined wall (23), the radius of the head part is smaller than that of the tail part, the head part and the tail part are coaxial and fixedly connected through the inclined wall (23), and an opening (21) is formed in the top end of the head part;

a liquid outlet (31) is formed in the bottom of the lower shell (3), and the liquid outlet (31) is communicated with the cavity (12);

the upper half part of the rubber valve (1) is arranged in the head part of the upper shell (2), the opening (21) is tightly attached to the top cover (11), the lower half part of the rubber valve (1) is arranged in the tail part of the upper shell (2), the inclined shoulder (17) is tightly attached to the inclined wall (23), the upper shell (2) is fixedly connected with the lower shell (3), the bottom edge of the lower half part of the rubber valve (1) is attached to the inner wall of the lower shell, and an annular liquid retention cavity (22) is arranged between the lower half part of the rubber valve (1) and the tail part of the upper shell (2);

the rubber valve is characterized in that a thickening layer (13) is longitudinally arranged in the cavity (12) along the rubber valve (1), and the thickening layer (13) starts from the lower end face of the top cover (11).

2. The positive-negative pressure needleless adhesive valve connector according to claim 1, wherein the lower half part of the adhesive valve (1) is provided with a positioning hole (16), the positioning hole (16) and the thickening layer (13) are on the same longitudinal line, and the positioning hole (16) is a through hole or a blind hole.

3. The positive-negative pressure needleless glue valve connector according to claim 1 or 2, characterized in that the glue valve (1) is provided with a liquid flow hole (15), and the liquid flow hole (15) is opposite to the thickening layer (13).

4. The positive-negative pressure needleless adhesive valve connector of claim 1, wherein the head of the adhesive valve cavity (12) is semicircular.

5. The positive-negative pressure needleless glue valve connection according to claim 1, characterized in that said thickening layer (13) ends in the lower half of the glue valve (1).

6. The positive-negative pressure needleless adhesive valve connector according to claim 1, characterized in that the lower half inner wall of the adhesive valve (1) is a flared mouth with a downward large mouth.

7. The positive-negative pressure needleless adhesive valve connector according to claim 1, wherein the lower edge of the top cover (11) is a cambered surface.

8. The positive-negative pressure needleless adhesive valve connector according to claim 1, wherein the liquid outlet (31) is provided with a luer connector.

Technical Field

The invention relates to the field of medical supplies, in particular to a positive and negative pressure non-needle-glue valve joint.

Background

In recent years, with the innovation and development of technology, various types of infusion joints full of Linglan and emphasizing on safe injection without needles have been introduced. Needle-free infusion connectors have also gone through previous blunt needle designs, complex mechanical valves to today's simple and transparent positive pressure needle-free connectors. In the existing design, the inclination direction of the rubber valve in the needleless connector is not fixed, a user often needs a long time to insert the injection port into the needle head, and meanwhile, the inclination direction of the rubber valve is not fixed, so that the injection port is not stably inserted, and the problems of liquid leakage and the like exist.

Disclosure of Invention

The technical problems solved by the invention are as follows: provided is a needleless connector in which a rubber valve can be inclined in a fixed direction, and the problem that an injection port is difficult to insert and unstable is solved.

In order to solve the above problems, the present invention provides the following technical solutions: the positive and negative pressure non-needle glue valve joint comprises a glue valve, an upper shell and a lower shell;

the glue valve comprises an upper half part, a lower half part and an inclined shoulder, wherein the radius of the upper half part is smaller than that of the lower half part, the upper half part and the lower half part are coaxial and fixedly connected through the inclined shoulder, a top cover is arranged at the top end of the upper half part, and cavities are formed in the upper half part and the lower half part of the glue valve;

the upper shell comprises a head part, a tail part and an inclined wall, the radius of the head part is smaller than that of the tail part, the head part and the tail part are coaxial and fixedly connected through the inclined wall, and an opening is formed in the top end of the head part;

a liquid outlet is formed in the bottom of the lower shell and is communicated with the cavity;

the upper half part of the rubber valve is arranged in the head part of the upper shell, the opening is tightly attached to the top cover, the lower half part of the rubber valve is arranged in the tail part of the upper shell, the inclined shoulder is tightly attached to the inclined wall, the upper shell is fixedly connected with the lower shell, the bottom edge of the lower half part of the rubber valve is attached to the inner wall of the lower shell, and an annular liquid detention cavity is arranged between the lower half part of the rubber valve and the tail part of the upper shell;

a thickening layer is arranged in the cavity along the longitudinal direction of the glue valve, and the thickening layer starts from the lower end face of the top cover.

Furthermore, the lower half part of the rubber valve is provided with a positioning hole, the positioning hole and the thickening layer are on the same longitudinal line, and the positioning hole is a through hole or a blind hole.

Furthermore, the glue valve is provided with a liquid flowing hole, and the position of the liquid flowing hole is opposite to that of the thickening layer.

Further, the thickening layer terminates at the lower half of the glue valve.

Furthermore, the inner wall of the lower half part of the rubber valve is a bell mouth with a downward large opening.

Further, the lower edge of the top cover is an arc surface.

Furthermore, the liquid outlet is provided with a luer joint.

The invention has the beneficial effects that:

1. the utility model provides a positive negative pressure does not have gluey valve joint of needle for the thin wall thick wall design through inside gluey valve for gluey valve can incline to fixed direction, thereby solves and solve injection port and insert the difficult and unstable problem.

2. Through top cap and epitheca open-ended sealed design, the invasion of prevention bacterium sets the arc to the top cap lower limb simultaneously, can effectively reduce the resistance when gluey valve kick-backs.

3. The flow holes are formed in the thin wall of the rubber valve, so that the flow of the medicine can be increased.

4. Through set up the locating hole on gluey valve thick wall, can let gluey valve to fixed direction slope deformation better.

5. The side wall of the rubber valve is provided with an inclination angle, so that the medicine can flow more conveniently.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

reference numbers in the figures: the glue valve comprises a glue valve 1, a top cover 11, a cavity 12, a thickening layer 13, a liquid flow hole 15, a positioning hole 16, an inclined shoulder 17, an upper shell 2, an opening 21, a liquid retention cavity 22, an inclined wall 23, a lower shell 3 and a liquid outlet 31.

Detailed Description

The embodiment shown in fig. 1 is a positive-negative pressure needleless glue valve joint, which comprises a glue valve 1, an upper shell 2 and a lower shell 3.

The rubber valve 1 comprises an upper half part, a lower half part and a sloping shoulder 17, wherein the radius of the upper half part is smaller than that of the lower half part, the upper half part and the lower half part are coaxial and fixedly connected through the sloping shoulder 17, a top cover 11 is arranged at the top end of the upper half part, and the lower edge of the top cover 11 is an arc surface. The inner wall of the lower half part of the rubber valve 1 is a bell mouth with a downward big mouth, and the upper half part and the lower half part are provided with cavities 12. A thickening layer 13 is arranged in the cavity 12 along the longitudinal direction of the glue valve 1, and the thickening layer 13 starts from the lower end face of the top cover 11 and ends at the middle of the lower half part. The lower half part of the glue valve 1 is provided with a positioning hole 16 and a liquid flow hole 15, the positioning hole 16 and the thickening layer 13 are on the same longitudinal line, the positioning hole 16 can be a through hole or a blind hole, and the positions of the liquid flow hole 15 and the positioning hole 16 are staggered and opposite up and down.

The upper shell 2 comprises a head part, a tail part and an inclined wall 23, the radius of the head part is smaller than that of the tail part, the head part and the tail part are coaxial and fixedly connected through the inclined wall 23, and the top end of the head part is provided with an opening 21.

The bottom of the lower shell 3 is provided with a liquid outlet 31, the liquid outlet 31 is communicated with the cavity 12, and the periphery of the lower shell is provided with a luer connector. Luer connectors are connected to hoses.

The first half of gluey valve 1 is arranged in the head of epitheca 2, opening 21 hugs closely with top cap 11 mutually, glue 1 lower half and arrange in the afterbody of epitheca 2, sloping shoulder 17 hugs closely with skew wall 23 mutually, epitheca 2 relies on the buckle with inferior valve 3 to be connected, the laminating of the lower half base of gluey valve 1 is on inferior valve inner wall, can part each other when gluey valve 1 pressurized deformation, be equipped with annular space between the first half of gluey valve 1 and the head of epitheca 2, be equipped with annular liquid detention chamber 22 between the afterbody of lower half of gluey valve 1 and epitheca 2.

When the injection valve is used, the top cover of the rubber valve 1 is extruded through the injection port, the rubber valve 1 can be positioned by the positioning hole 16, the bottom end of the thickening layer 13 is used as a fulcrum, the rubber valve 1 is oppositely inclined and deformed, the volume of the cavity 12 in the rubber valve 1 is shrunk, the inclined shoulder 17 is separated from the inclined wall 23, and the medicine flows into the liquid retention cavity 22 from the opening 21 along the side wall of the rubber valve 1.

The invention has two positive pressure modes, the first positive pressure mode is that the positioning hole 16 of the rubber valve 1 is oppositely provided with the liquid flowing hole 15, and at the moment, the medicine remained in the liquid retention cavity 22 enters the inner cavity of the rubber valve 1 along the liquid flowing hole 15. When the injection is nearly finished, the hose arranged outside the liquid outlet 31 is clamped, then the injection port is pulled out, the rubber valve 1 is restored to the original state, the hose does not flow back at the moment, and positive pressure is formed. The second positive pressure method is different from the first method in that the positioning hole 16 is not provided with the liquid flow hole 15. Because the glue valve 1 is pressed and obliquely deforms by taking the bottom of the thickening layer 13 as a fulcrum, the bottom of the glue valve 1 is separated from the lower shell to form a small liquid flow channel, and the medicine in the liquid retention cavity 22 enters the cavity 23 in the glue valve 1 along the liquid flow channel.

The difference between the negative pressure mode and the positive pressure mode is that when the injection is finished, the connecting pipe arranged outside the liquid outlet 31 is not clamped, the injection port is pulled out, the rubber valve 1 is restored, the volume of the cavity 12 is increased, and the medicine can be sucked into the inner cavity of the rubber valve 1 along the liquid outlet 31 to form medicine reflux.