Device for testing sealing performance of pre-potting package

Abstract

The utility model provides a device for testing the sealing performance of a pre-potting package, which comprises a detection cavity for detecting the sealing performance of a sample to be tested, the detection cavity comprises an upper cavity and a lower cavity, and a replaceable lining matched with the specification of the sample to be tested is arranged in the detection cavity. And the upper end of the to-be-tested sample is also provided with a jackscrew capable of pressing the to-be-tested sample. The lining is replaceable, the sealing performance is good, the operation is convenient, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of medicine testing, in particular to a testing device for the sealing performance of a pre-filled package. Background Art

[0002] Prefilled and other pharmaceutical packaging needs to be tested for sealing before leaving the factory. Due to the diversity of prefilled packaging specifications, and the fact that the same type of packaging may have different volumes, some testing methods on the market currently require a custom test cavity tooling for each specification of packaging. Changing the packaging specification requires changing the test cavity, which is costly and troublesome. Secondly, when the volume of the same specification changes, the cavity may not be suitable, or the prefilled piston may not be pressed tightly during testing. Summary of the invention

[0003] In order to solve the above-mentioned problems of the prior art, the utility model provides a testing device for the sealing of pre-filled packaging. A replaceable liner is provided in the detection cavity. The liner can be replaced according to the different sizes of the samples to be tested. There is no need to replace the detection cavity, which saves costs and is convenient for replacement.

[0004] The technical solutions adopted are as follows:

[0005] A testing device for the sealing of prefilled packages comprises a testing cavity for testing the sealing of a sample to be tested, the testing cavity comprising an upper cavity and a lower cavity, a replaceable liner matching the specifications of the sample to be tested is arranged in the testing cavity, and a top screw for pressing the sample to be tested is also arranged at the upper end of the sample to be tested.

[0006] Furthermore, the sample to be tested may be a prefilled syringe, which includes a bushing and a thin rod slidably connected in the bushing, and a piston is provided at the lower end of the thin rod.

[0007] Furthermore, the top screw is arranged at the upper end of the thin rod, and a plug is arranged at the upper end of the top screw.

[0008] Furthermore, a sealing ring is provided between the upper cavity and the lower cavity.

[0009] Furthermore, the inner lining is provided with a test hole matching the sample to be tested.

[0010] Furthermore, the lower cavity is provided with a mounting hole matching the lining.

[0011] Furthermore, a sealing structure is provided at the lower end of the plug, and the sealing structure may be an O-ring.

[0012] Compared with the prior art, the beneficial effects produced by the utility model are:

[0013] The utility model provides a test device for the sealing of prefilled packages, including a detection cavity with upper and lower parts, wherein the sample to be tested is arranged in the cavity, and a matching liner is arranged outside the sample to be tested. The liner sizes of samples to be tested of different sizes are different. When replacing the sample to be tested, it is only necessary to replace the corresponding liner without replacing the detection cavity, which saves costs and is easy to operate. A top screw is arranged at the upper end of the sample to be tested, and a plug is arranged at the upper end of the top screw, which can fix the sample to be tested and reduce pollution. At the same time, a thread is arranged on the top screw, and the degree of downward pressure can be changed by rotating and adjusting the top screw, so as to adapt to prefilled syringes with different filling volumes. The utility model is easy to use, has a wide range of applications, and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Among them, there are the sample to be tested 1, the bushing 101, the thin rod 102, the piston 103, the detection cavity 2, the upper cavity 201, the lower cavity 202, the lining 3, the top screw 4, the plug 5, the sealing ring 6, the test hole 7, and the installation hole 8. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with specific embodiments.

[0018] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] refer to Figure 1 , 2 A testing device for the sealing of a prefilled package includes a testing cavity 2 for detecting the sealing of a sample 1 to be tested, wherein the testing cavity 2 includes an upper cavity 201 and a lower cavity 202, wherein a replaceable liner 3 matching the specification of the sample 1 to be tested is disposed in the testing cavity 2, and a top screw 4 for pressing the sample 1 to be tested is also disposed at the upper end of the sample 1 to be tested.

[0020] The detection cavity 2 is divided into upper and lower parts for easy installation of the sample 1 to be tested. The sample 1 to be tested is generally a prefilled syringe. This embodiment takes a prefilled syringe as an example. The prefilled syringe includes a bushing 101, a thin rod 102 slidably connected to the bushing 101, and a piston 103 is provided at the lower end of the thin rod 102. The thin rod 102 is partially arranged in the bushing 101, and the piston 103 is arranged at the lower end of the thin rod 102, located inside the bushing 101.

[0021] The inner liner 3 is provided with a test hole 7 matching the sample 1 to be tested. The inner liner 3 is designed according to the size of the bushing 101 of the prefilled syringe. When replacing a prefilled syringe of different volume for testing, it is only necessary to replace the inner liner 3 of the corresponding size without replacing the test cavity 2, which reduces the cost and is more convenient to install.

[0022] The lower cavity 202 is provided with a mounting hole 8 matching the liner 3. The volume of the liner is designed according to the size of the mounting hole 8, so that the liner 3 can be easily installed.

[0023] When testing the sealing of prefilled syringes by vacuum extraction using a vacuum decay method or other equipment, in order to prevent the piston of the prefilled syringe from being sucked out during vacuum extraction, the piston of the prefilled syringe needs to be fixed before testing.

[0024] A plug 5 is provided at the upper end of the top screw 4 to further improve the sealing performance of the prefilled syringe.

[0025] In the utility model, a top screw 4 is provided at the upper end of the thin rod of the prefilled syringe, and the top screw 4 is provided at the upper end of the thin rod 102. The top screw 4 is provided with a thread, and the top screw 4 is rotated to adjust the top screw 4 to press the thin rod 102 downward to prevent the thin rod 102 from detaching from the prefilled syringe and to prevent the piston from being sucked out and causing pollution to the interior. The top screw 4 can adjust the degree of downward pressure and is suitable for prefilled syringes with different filling volumes. A plug 5 is provided at the upper end of the top screw 4, which can press the top screw 4, further press the prefilled syringe, prevent the piston 103 from moving, and prevent the medicine in the prefilled syringe from being contaminated.

[0026] A sealing ring 6 is provided between the upper cavity 201 and the lower cavity 202, and a sealing structure is provided at the lower end of the plug 5, and the sealing structure can be an O-ring, which can further improve the sealing performance of the entire device.

[0027] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A device for testing the sealing property of a prefilled package, comprising a testing cavity (2) for testing the sealing property of a sample to be tested (1), wherein the testing cavity (2) comprises an upper cavity (201) and a lower cavity (202), and is characterized in that: The detection cavity (2) is provided with a replaceable liner (3) matching the specifications of the sample to be tested (1), and the upper end of the sample to be tested (1) is also provided with a top screw (4) that can press the sample to be tested.

2. The device for testing the sealing property of a prefilled package according to claim 1, characterized in that: The sample to be tested (1) may be a prefilled syringe, which comprises a bushing (101), a thin rod (102) slidably connected to the bushing (101), and a piston (103) is provided at the lower end of the thin rod (102).

3. The device for testing the sealing property of a prefilled package according to claim 2, characterized in that: The top screw (4) is arranged at the upper end of the thin rod (102), and a plug (5) is arranged at the upper end of the top screw (4).

4. The device for testing the sealing property of a prefilled package according to claim 1, characterized in that: A sealing ring (6) is provided between the upper cavity (201) and the lower cavity (202).

5. The device for testing the sealing property of a prefilled package according to claim 1, characterized in that: The inner lining (3) is provided with a test hole (7) matching the sample (1) to be tested.

6. The device for testing the sealing property of a prefilled package according to claim 1, characterized in that: The lower cavity (202) is provided with a mounting hole (8) matching the inner lining (3).

7. The device for testing the sealing property of a prefilled package according to claim 3, characterized in that: The lower end of the plug (5) is provided with a sealing structure, and the sealing structure may be an O-ring.

Images