An ultrasonic wave welded housing of a luer hub

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, specifically discloses a shell of ultrasonic welding luer interface, which comprises the following parts: a shell, a mounting seat and an adapter with a luer interface; the shell and the mounting seat are integrally formed; the adapter with the luer interface is installed on the mounting seat through ultrasonic welding; and the shell, the mounting seat and the adapter are in communication after installation. The mounting mode of the utility model eliminates the need for installing a Hansen interface, a conversion adapter and a glue injection process in the prior art, thereby improving the production efficiency and sealing performance when the luer interface is installed on the shell.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a housing with an ultrasonically welded Luer interface. Background Technology

[0002] The Luer connector, with its standardized, minimally leaching, and highly efficient connection operation, has found widespread application in medical and laboratory instruments, greatly simplifying the management of liquid and gaseous medical fluids. In the medical field, the Luer connector has demonstrated numerous key roles, with its application in plasma separators being a prime example.

[0003] During the use of plasma separators, ensuring a safe and reliable connection to the entire blood circuit is crucial. The unique advantages of Luer interfaces perfectly meet this need. Adding a Luer interface to a plasma separator guarantees a safe, sterile, and tight connection between the separator and the blood circuit. This tight connection effectively prevents interface detachment or leakage during treatment, ensuring patient safety.

[0004] However, under current technological conditions, installing the Luer connector on a plasma separator faces several challenges. Because the inner diameter of the Luer connector is very small, and the PU adhesive used in the plasma separator has a very high viscosity, significant difficulties arise during the adhesive injection process. The high-viscosity PU adhesive is difficult to inject smoothly into the narrow-diameter Luer connector, making it impossible to directly install the Luer connector onto the plasma separator.

[0005] To address this installation challenge, a rather cumbersome installation process is currently employed. First, the threaded Hansen connector is installed onto the plasma separator via a threaded connection. After installation, a sealant injection process is performed. Then, an adapter is installed on the Hansen connector. This adapter acts as a bridge, with one end accurately installed on the Hansen connector and the other end used to install the Luer connector. However, the entire installation process involves connecting multiple components, making the operation not only cumbersome and time-consuming but also potentially jeopardizing the sealing performance of the entire system due to the potential for leaks at each connection point. Utility Model Content

[0006] The purpose of this invention is to provide a housing for ultrasonically welded Luer interfaces, thereby improving the production efficiency and sealing performance of Luer interfaces when installed in housings.

[0007] The purpose of this utility model is achieved through the following technical solution: a housing with an ultrasonically welded Luer interface is provided, comprising: a housing, a mounting base, and an adapter with a Luer interface; the housing and the mounting base are integrally formed, and the adapter with the Luer interface is installed on the mounting base by ultrasonic welding, and after installation, the housing, the mounting base, and the adapter are connected.

[0008] Preferably, the inner wall of the mounting base is provided with a first step, and a chamfer is provided at the circumferential junction of the first step and the inner wall of the mounting base for ultrasonic welding connection with the adapter.

[0009] Preferably, the chamfer is C-shaped, with a size range of C0.5-C1.

[0010] Preferably, the adapter is provided with a mounting part that mates with the first step, the mounting part including a frustum and a positioning tube extending downward along the frustum.

[0011] Preferably, the frustum includes a first frustum and a second frustum, and the first frustum is connected to the upper end of the mounting base by ultrasonic circumferential welding.

[0012] Preferably, the mounting base and adapter are made of PC plastic.

[0013] Due to the adoption of the above technical solution, this utility model has the following advantages: This utility model integrates the outer shell and mounting base, and the Luer interface and adapter, and installs the adapter on the outer shell by ultrasonic welding. This eliminates the need for installing the Hansen interface, adapter, and gluing process required in the prior art, and improves the production efficiency and sealing performance when installing the Luer interface on the outer shell. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a structural schematic diagram of a housing for ultrasonic welding of a Luer interface according to the present invention; Figure 2 This is a schematic diagram of the mounting base. Figure 3 This is a schematic diagram of an adapter with a Luer connector.

[0016] Figure label: 1-Outer shell, 11-Reinforcing ribs; 2-Mounting base, 21-First step, 211-Chamfer, 212-Insertion port; 3-Adapter, 31-Luer interface, 32-Mounting part, 321-Frustum, 322-Positioning tube, 323-First frustum, 324-Second frustum, 325-Second ultrasonic welding line. Detailed Implementation

[0017] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0018] Please see Figure 1 and Figure 2 A housing for ultrasonic welding of a Luer interface includes: a housing 1, a mounting base 2, and an adapter 3 with a Luer interface.

[0019] The outer shell 1 and the mounting base 2 are integrally formed. The adapter 3 with a Luer interface is installed on the mounting base 2 by ultrasonic welding. After installation, the outer shell 1, the mounting base 2, and the adapter 3 are connected. Specifically, the outer shell 1 includes, but is not limited to, products that require connection to a Luer interface, such as plasma separators and dialysis filters for continuous blood purification. The outer shell 1 has a chamber. The mounting base 2 and the outer shell 1 are integrally formed by mold, which not only saves the assembly time of the mounting base 2, but also provides good sealing performance and strength between the mounting base 2 and the outer shell 1, facilitating subsequent ultrasonic welding of the adapter 3. The mounting base 2 has an inlet that communicates with the chamber. The inner diameter of the mounting base 2 depends on the actual scenario. The inner diameter of this application is the same as the inner diameter of the Hansen connector in the prior art. Several reinforcing ribs 11 are provided between the mounting base 2 and the outer shell 1, and the reinforcing ribs 11 are spaced apart along the circumference of the mounting base 2. The adapter 3 with Luer interface is also formed by molding. One end of the adapter 3 is provided with Luer interface 31. The size of Luer interface 31 needs to meet the requirements of GB / T1962.1 Syringe, Injection Needle and Other Medical Device 6% (Luer) Conical Connector.

[0020] The present invention discloses a housing for an ultrasonically welded Luer interface. The housing 1 and the mounting base 2 are integrally formed, and the Luer interface 31 and the adapter 3 are integrally formed. The adapter 3 is then installed on the housing 1 by ultrasonic welding. This eliminates the need for the installation of Hansen interface, adapter, and glue injection process in the prior art, and improves the production efficiency and sealing performance when the Luer interface is installed on the housing 1.

[0021] Further, please refer to Figure 2The inner wall of the mounting base 2 is provided with a first step 21, and a chamfer 211 for ultrasonic welding connection with the adapter 3 is provided at the circumferential junction of the first step 21 and the inner wall of the mounting base 2. Specifically, the first step 21 is formed by extending axially along the circumferential inner wall of the mounting base 2. The first step is annular. A chamfer 211 is provided circumferentially at the junction of the first step 21 and the inner wall of the mounting base 2, and the chamfer 211 forms the first ultrasonic welding line for welding the adapter 3 and the mounting base 2. In this application, the chamfer 211 is C-shaped, with a size range of C0.5-C1. The C-shaped chamfer facilitates ultrasonic welding between the mounting base 2 and the adapter 3. If the C-shaped chamfer is less than C0.5, the requirements for mold precision and production control are high, which is not convenient for mass production. If it is greater than C1, it will affect the welding quality of ultrasonic welding. The smaller the C-shaped chamfer, the better, while ensuring production. Mounting base 2 and adapter 3 are made of PC plastic. Using the same material ensures chemical compatibility and improves the welding quality during ultrasonic welding.

[0022] Further, please refer to Figure 3 The adapter 3 is provided with a mounting part 32 that mates with the first step 21. The mounting part 32 includes a frustum 321 and a positioning tube 322 extending downward along the frustum 321. Specifically, the first step 21 has an insertion port 212 that mates with the positioning tube 322. The positioning tube 322 is coaxial with the Luer interface 31, and the outer diameter of the positioning tube 322 is the same as the inner diameter of the insertion port 212. The outer diameter of the frustum 321 matches the inner diameter of the adapter 3. With this structure, the positioning tube 322 is inserted into the insertion port 212, and the lower end face of the frustum 321 is in surface contact with the surface of the first step 21, limiting and positioning the insertion depth of the adapter 3. The adapter 3 is accurately positioned in the mounting base 2, avoiding misalignment during welding of the mounting base 2 and the adapter 3, improving their coaxiality, effectively ensuring the welding quality during ultrasonic welding, and thus improving the sealing between the mounting base 2 and the adapter 3.

[0023] Further, please refer to Figure 3The frustum 321 includes a first frustum 323 and a second frustum 324. The first frustum 323 is connected to the upper end of the mounting base 2 by ultrasonic circumferential welding. Specifically, the outer diameter of the first frustum 323 is larger than the outer diameter of the second frustum 324, and the outer diameter of the second frustum 324 is the same as the inner diameter of the mounting base 2. The height of the second frustum 324 is slightly less than the distance from the surface of the first step 21 to the top of the mounting base 2. During installation, the lower surface of the second frustum 324 contacts the surface of the first step 21, and the first frustum 323 is exposed outside the mounting base 2. A second ultrasonic welding line 325, similar to a chamfer 211, is provided at the junction of the first frustum 323 and the second frustum 324. The top of the first step 21 mates with the second ultrasonic welding line 325 to improve the quality of ultrasonic welding. This structure not only improves the sealing between the mounting base 2 and the adapter 3, but also, since the first frustum 323 is slightly higher than the top of the mounting base 2, it better hides the welding marks after ultrasonic welding, improving the appearance quality of the product.

[0024] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the scope of the spirit of this utility model should be included within the protection scope of this utility model.

Claims

1. A housing with an ultrasonically welded Luer interface, characterized in that, include: The outer shell (1), the mounting base (2), and the adapter (3) with Luer interface are integrally formed. The adapter (3) with Luer interface is installed on the mounting base (2) by ultrasonic welding. After installation, the outer shell (1), the mounting base (2), and the adapter (3) are connected.

2. The housing of the ultrasonically welded Luer interface according to claim 1, characterized in that, The inner wall of the mounting base (2) is provided with a first step (21), and a chamfer (211) for ultrasonic welding connection with the adapter (3) is provided at the circumferential junction of the first step (21) and the inner wall of the mounting base (2).

3. The housing of the ultrasonically welded Luer interface according to claim 2, characterized in that, The chamfer (211) is of type C, with a size range of C0.5-C1.

4. The housing of the ultrasonically welded Luer interface according to any one of claims 1 to 3, characterized in that, The adapter (3) is provided with a mounting part (32) that mates with the first step (21). The mounting part (32) includes a frustum (321) and a positioning tube (322) extending downward along the frustum (321).

5. The housing of the ultrasonically welded Luer interface according to claim 4, characterized in that, The frustum (321) includes a first frustum (323) and a second frustum (324). The first frustum (323) is connected to the upper end of the mounting base (2) by ultrasonic circumferential welding.

6. The housing of the ultrasonically welded Luer interface according to claim 1, 2, 3 or 5, characterized in that, The mounting base (2) and adapter (3) are made of PC plastic.

7. The housing of the ultrasonically welded Luer interface according to claim 4, characterized in that, The mounting base (2) and adapter (3) are made of PC plastic.

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