A luer fitting press-in connection device

Abstract

The utility model provides a kind of luer connector press-in type connecting device, to solve the problem of luer connector of prior art and more components complex structure of relying on adhesive;The utility model mainly includes connector main body, connector base, the limiting piece being provided on annular cavity wall surface and the matching end face being formed in the axial intermediate section of connector main body;The utility model optimizes the structure of connector main body and connector base, eliminates the original sleeve ring component, the hook claw cooperation limiting of connector main body and connector base with barb structure is limited by matching end face, connector main body is rotatably limited in the matching portion of connector base, and the structure of luer connector after optimization is simpler, and no longer relies on adhesive.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a Luer joint press-fit connection device. Background Technology

[0002] Luer connectors are commonly used connection devices in the medical field, mainly for fluid delivery systems such as syringes and infusion tubing.

[0003] The structure of the existing Luer joint is shown in the attached figure. Figure 1 As shown, it includes a connector a, a collar b, a connector base c, and a sealing ring d. In use, connector a is first inserted into the inner cavity of connector base c, and then collar b is fitted onto the outer circumference of connector a. At the same time, the contact surfaces of collar b and connector base a are fixed together with UV adhesive. At this time, collar b and connector base a are fixed together with adhesive. Connector a is confined in the annular cavity formed between the two and can rotate on its own, realizing the function of Luer connector.

[0004] While the aforementioned Luer joint can perform basic functions, its drawbacks include reliance on adhesives, numerous components, and a complex structure, resulting in a high rate of poor bonding during actual use. Utility Model Content

[0005] This application addresses the shortcomings of the prior art by providing a Luer connector press-fit connection device, which eliminates the original collar component. The connector body is rotatably limited in the mating part of the connector base by the cooperation and limitation of the mating end face and the hook with barbed structure of the connector base. The optimized Luer connector structure is simpler and no longer relies on adhesive.

[0006] The technical solution adopted in this utility model is as follows: A press-fit connection device for Luer connectors includes a connector body and a connector base. The connector base is used to mate with a hollow annular cavity formed inside one end of the connector body. Multiple limiting members for limiting the connector body are provided on the wall surface of the annular cavity. A mating end face is formed in the middle section along its axial direction of the connector body. The connector base rotatably limits the connector body to the mating part of the connector base by the mating of the limiting members and the mating end face.

[0007] Furthermore, the limiting member is a hook with a barbed structure, the tail of the hook is fixed above the circumferential wall of the annular cavity, and the barbed end of the hook is set towards the end of the annular cavity for engagement.

[0008] Furthermore, the front section of the connector body that inserts into the connector base is the insertion section, the middle section that is used to cooperate with the limiting member is the mating end face, and the extended part of its tail section is the tail seat. A through hole is formed in the center of the insertion section, the mating end face and the tail seat.

[0009] Furthermore, the cross-section of the mating end face is tapered, and the diameter of the mating end face gradually decreases from the insertion direction to the tailstock direction.

[0010] Furthermore, a sealing ring is provided on the shoulder of the insertion section.

[0011] Furthermore, the front end of the connector base is provided with a guide nozzle for installing a conduit, and the annular outer periphery of the guide nozzle is also formed with an internal thread section for connecting with the valve body.

[0012] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model provides a Luer connector press-fit connection device, which optimizes the structure of the connector body and the connector base. A tapered mating end face is formed in the insertion part of the connector body, and multiple claws with barbed structures are arranged circumferentially in the inner cavity of the connector base. When the connector body is slowly inserted into the connector base, the mating end face can pass smoothly through the claws. When the connector body is fully inserted into the connector base, the connector body is confined in the inner cavity of the connector base due to the mutual restraint between the barbed structure of the claws and the mating end face. At the same time, the connector body can achieve self-rotation, realizing effective connection and mating between the conduit and the valve body. This greatly simplifies the structure of the connection accessory and avoids the negative impact of poor adhesive bonding. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the existing Luer structure. Figure 2 This is a schematic diagram of the structure of this utility model after assembly; Figure 3 This is a schematic diagram of the structure of the connector body of this utility model; Figure 4 This is a schematic diagram of the connector base of this utility model.

[0014] The components are: 1. Connector body; 2. Connector base; 3. Annular cavity; 4. Mating end face; 5. Limiting component; 6. Insertion section; 7. Tailstock; 8. Through hole; 9. Guide nozzle; 10. Threaded section. Detailed Implementation

[0015] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0016] This utility model provides a press-fit connection device for Luer joints, which aims to solve the problems of existing Luer joints relying on adhesives and having many components and complex structures. like Figures 2 to 4 As shown, this utility model includes a connector body 1 and a connector base 2. The connector base 2 is used to cooperate with a hollow annular cavity 3 formed inside one end of the connector body 1. A plurality of limiting members 5 are provided on the wall surface of the annular cavity 3 for limiting the connector body 1. A mating end face 4 is formed in the middle section along its axial direction of the connector body 1. The connector base 2 rotatably limits the connector body 1 in the mating part of the connector base 2 by cooperating with the mating end face 4 through the limiting members 5.

[0017] In one embodiment of this utility model, the limiting member 5 is a hook with a barbed structure. The tail of the hook is fixed above the circumferential wall of the annular cavity 3, and the end with the barbs is set towards the end of the annular cavity 3 for engagement.

[0018] In one embodiment of this utility model, the front section of the connector body 1 that is inserted into the connector base 2 is the insertion section 6, the middle section that is used to cooperate with the limiting member 5 is the mating end face 4, and the extended part of its tail section is the tail seat 7. A through hole 8 is formed in the center of the insertion section 6, the mating end face 4 and the tail seat 7.

[0019] In one embodiment of this utility model, the cross-section of the mating end face 4 is tapered, and the diameter of the mating end face 4 gradually decreases from the insertion direction to the tailstock 7 direction.

[0020] In one embodiment of this utility model, a sealing ring is also provided on the shoulder of the insertion section 6.

[0021] In one embodiment of this utility model, the front end of the connector base 2 is provided with a guide nozzle 9 for installing a conduit, and the annular outer periphery of the guide nozzle 9 is also formed with an internal thread section 10 for connecting with the valve body.

[0022] The specific structure and working principle of this utility model are as follows: Connector body 1: Connector body 1 includes an insertion section 6, a mating end face 4, and a tail seat 7. The insertion section 6 is used to insert into the connector base 2, the mating end face 4 has a tapered structure, the tail seat 7 is used to further connect the conduit, and the through hole 8 penetrates the entire connector body 1 for the installation of the conduit.

[0023] Connector base 2: Connector base 2 has an annular cavity 3 formed inside, and eight barbed claws are provided on the cavity wall. The barbs of the claws face the opening end of the cavity and are used to limit the engagement with the mating end face 4 of the connector body 1.

[0024] Assembly process: Slowly insert the insertion section 6 of the connector body 1 into the annular cavity 3 of the connector base 2. After the mating end face 4 passes through the barbed structure of the hook, the hook and the mating end face 4 form a limit, so that the connector body 1 can be rotatably fixed in the connector base 2.

[0025] Sealing design: A sealing ring is installed on the shoulder of the insertion section 6 to ensure the sealing of the connection (the installation position is at point e in the figure, but the structure of the sealing ring is not shown in the figure).

[0026] Connection Application: After assembly, the guide nozzle 9 of the connector base 2 is used to install the catheter, and the internal thread section 10 is used to connect with the valve body (such as the Y valve commonly found in medical devices) to achieve a reliable connection of the liquid transmission system.

[0027] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A press-fit connection device for Luer joints, characterized in that: The device includes a connector body (1) and a connector base (2). The connector base (2) is used to cooperate with a hollow annular cavity (3) formed inside one end of the connector body (1). Multiple limiting members (5) for limiting the connector body (1) are provided on the wall surface of the annular cavity (3). The connector body (1) has a mating end face (4) formed in the middle section along its axial direction. The connector base (2) rotatably limits the connector body (1) to the mating part of the connector base (2) through the cooperation of the limiting members (5) and the mating end face (4).

2. The Luer joint press-fit connection device as described in claim 1, characterized in that: The limiting member (5) is a hook with a barbed structure. The tail of the hook is fixed above the circumferential wall of the annular cavity (3), and the barbed end is set towards the end of the annular cavity (3) for cooperation.

3. The Luer joint press-fit connection device as described in claim 1, characterized in that: The front section of the connector body (1) that is inserted into the connector base (2) is the insertion section (6), the middle section that is used to cooperate with the limiting member (5) is the mating end face (4), and the extended part of its tail section is the tail seat (7). A through hole (8) is formed in the center of the insertion section (6), the mating end face (4) and the tail seat (7).

4. The Luer joint press-fit connection device as described in claim 3, characterized in that: The cross-section of the mating end face (4) is tapered, and the diameter of the mating end face (4) gradually decreases from the insertion direction to the tailstock (7).

5. The Luer joint press-fit connection device as described in claim 3, characterized in that: The shoulder of the insertion section (6) is also provided with a sealing ring.

6. The Luer joint press-fit connection device as described in claim 1, characterized in that: The front end of the connector base (2) is provided with a guide nozzle (9) for installing a conduit, and the annular outer periphery of the guide nozzle (9) is also formed with an internal thread section (10) for connecting with the valve body.

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