High pressure universal screw joint

Abstract

The present invention discloses a high-pressure universal spiral joint, comprising a spiral joint and a bonding conduit, wherein the spiral joint comprises a first connection part, and one end of the bonding conduit is provided with a second connection part combined with the first connection part; the first connection part comprises a plurality of circumferentially arranged hooks arranged on the inner side of the spiral joint; the second connection part comprises a connecting rod, and a first convex ring and a second convex ring are arranged on the connecting rod, an annular groove is arranged between the first convex ring and the second convex ring, a clamping ring is arranged in the annular groove, and the clamping ring is provided with a first notch, and the diameter of the clamping ring is greater than the diameter of the first convex ring and the second convex ring, so that the clamping ring can be engaged with the clamping hook. The structure adopts a pure physical connection instead of the original chemical connection method, so that the connected joint can realize 360-degree rotation, and at the same time, the pressure resistance of the joint can reach more than 80 atmospheric pressures, realizing a tight connection of the joint, so that the joint will not be pulled out.

Description

Technical Field

[0001] The invention relates to the field of medical joints, in particular to a high-pressure universal screw joint. Background Art

[0002] The Luer connector is a commonly used connector in the medical field and is widely used for connecting pipes and instruments. Among the connectors currently on the market, the connection method for spiral connectors and bonded catheters is glue connection. Although the firmness of the adhesion can be guaranteed, the glue adhesion makes it inevitable that chemical substances will be precipitated during the use of the connector, thus making it impossible to fully guarantee its safe use. Summary of the invention

[0003] The technical problem solved by the present invention is to provide a high-pressure universal spiral joint, which adopts a purely physical connection method to make the spiral joint and the bonding catheter rotationally connected, so that the entire joint can withstand a pressure of more than 80 atmospheres.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a high-pressure universal spiral joint, comprising a spiral joint and a bonding conduit, wherein the spiral joint comprises a first connecting portion, and one end of the bonding conduit is provided with a second connecting portion combined with the first connecting portion;

[0005] The first connection portion includes a plurality of circumferentially arranged hooks arranged on the inner side of the spiral joint;

[0006] The second connecting part includes a connecting rod, on which a first convex ring and a second convex ring are arranged, an annular groove is arranged between the first convex ring and the second convex ring, a snap ring is arranged in the annular groove, and the diameter of the snap ring is larger than the diameters of the first convex ring and the second convex ring, so that the snap ring can be engaged with the hook.

[0007] Furthermore, the clamping ring is provided with a first notch.

[0008] Furthermore, a boss is arranged on the inner side of the spiral joint, the boss is located on the inner side of the hook, and a sealing ring is sleeved on the connecting rod, so that the sealing ring is located between the boss and the first convex ring.

[0009] Furthermore, the hook has an inclined surface on one side facing the bonding catheter.

[0010] Furthermore, a plurality of second notches are circumferentially arranged on the spiral joint, and the second notches correspond to the positions of the clamping rings after installation.

[0011] Furthermore, the spiral joint and the bonding catheter are made of nylon.

[0012] The beneficial effects of the present invention are:

[0013] 1. This structure uses pure physical connection instead of the original chemical connection method, so that the connected joint can achieve 360-degree rotation. At the same time, the pressure resistance of the joint can reach more than 80 atmospheres, achieving a tight connection of the joint so that the joint will not be pulled out;

[0014] 2. The physical connection method makes the joint safer to use and will not release chemical components;

[0015] 3. The physical connection method makes the installation of the connector more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a high-pressure universal screw joint.

[0017] Figure 2 Schematic diagram of the spiral joint.

[0018] Figure 3 Schematic diagram of bonding catheter.

[0019] Figure 4 Schematic diagram of the snap ring.

[0020] The components marked in the figure are: spiral joint 1 , hook 11 , boss 12 , second notch 13 , bonding catheter 2 , first convex ring 21 , second convex ring 22 , snap ring 23 , first notch 24 , and sealing ring 25 . DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] like Figure 1The high-pressure universal spiral joint shown comprises a spiral joint 1 and a bonding conduit 2, wherein the spiral joint 1 comprises a first connection portion, and one end of the bonding conduit 2 is provided with a second connection portion combined with the first connection portion; the first connection portion comprises a plurality of circumferentially arranged hooks 11 arranged on the inner side of the spiral joint 1; the second connection portion comprises a connecting rod, and a first convex ring 21 and a second convex ring 22 are arranged on the connecting rod, an annular groove is arranged between the first convex ring 21 and the second convex ring 22, a snap ring 23 is arranged in the annular groove, and the snap ring 23 is provided with a first notch 24, and the diameter of the snap ring 23 is larger than the diameter of the first convex ring 21 and the second convex ring 22, so that the snap ring 23 can be engaged with the snap hook 11;

[0024] During specific use, the first connecting part and the second connecting part are pressed against each other. During the pressing process, the gap of the clamping ring 23 is tightened, and the size of the clamping ring 23 is reduced, so that the clamping ring 23 is pressed to the rear of the hook 11. At this time, the clamping ring 23 recovers under the action of its own elastic potential energy, thereby achieving a tight engagement between the clamping ring 23 and the hook 11, that is, a tight engagement between the spiral joint 1 and the bonding catheter 2, and at the same time will not affect their mutual 360-degree rotation. This structure adopts a pure physical connection instead of the original chemical connection method, so that the connected joint can achieve 360-degree rotation, and at the same time, the pressure resistance of the joint can reach more than 80 atmospheres, achieving a tight connection of the joint, so that the joint will not be pulled out, and the physical connection method makes the use of the joint safer without the release of chemical components.

[0025] On the basis of the above, a boss 12 is provided on the inner side of the spiral joint 1, and the boss 12 is located on the inner side of the hook 11. A sealing ring 25 is provided on the connecting rod so that the sealing ring 25 is located between the boss 12 and the first convex ring 21. The setting of the sealing ring 25 can ensure the sealing performance of the spiral joint 1 when it is in use.

[0026] On the basis of the above, the hook 11 has an inclined surface structure on the side facing the bonding catheter 2 . The inclined surface structure can play a guiding role, making it easier to insert the clamping ring 23 into the hook 11 .

[0027] On the basis of the above, a plurality of second notches 13 are circumferentially arranged on the spiral joint 1, and the second notches 13 correspond to the position of the clamping ring 23 after installation. The setting of the second notches 13 allows the clamping ring 23 to have a certain expansion space after being squeezed and reset, thereby preventing the clamping ring 23 from breaking due to extrusion force and the like.

[0028] On the basis of the above, the spiral joint 1 and the bonding catheter 2 are made of nylon, or other plastic materials. The use of nylon material in this structure ensures that no bisphenol A is precipitated when the joint is in use, thereby making the use of the joint safer.

[0029] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-pressure universal spiral joint, comprising a spiral joint (1) and a bonding conduit (2), characterized in that: The spiral joint (1) comprises a first connection portion, and one end of the bonding catheter (2) is provided with a second connection portion combined with the first connection portion; The first connection portion comprises a plurality of circumferentially arranged hooks (11) arranged on the inner side of the spiral joint (1); The second connecting portion comprises a connecting rod, on which a first convex ring (21) and a second convex ring (22) are provided, an annular groove is provided between the first convex ring (21) and the second convex ring (22), a snap ring (23) is provided in the annular groove, and the diameter of the snap ring (23) is larger than the diameter of the first convex ring (21) and the second convex ring (22), so that the snap ring (23) can be engaged with the hook (11).

2. The high-pressure universal screw joint according to claim 1, characterized in that: The clamping ring (23) is provided with a first notch (24).

3. The high-pressure universal screw joint according to claim 1, characterized in that: A boss (12) is provided on the inner side of the spiral joint (1), and the boss (12) is located on the inner side of the hook (11). A sealing ring (25) is sleeved on the connecting rod, so that the sealing ring (25) is located between the boss (12) and the first convex ring (21).

4. The high-pressure universal screw joint according to claim 1, characterized in that: The hook (11) has an inclined surface structure on the side facing the bonding catheter (2).

5. The high-pressure universal screw joint according to claim 1, characterized in that: The spiral joint (1) is provided with a plurality of second notches (13) circumferentially, and the second notches (13) correspond to the positions of the mounted clamping ring (23).

6. The high-pressure universal screw joint according to claim 1, characterized in that: The spiral joint (1) and the bonding catheter (2) are made of nylon.

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