Pre-filling needle leak detection device

Abstract

The utility model relates to a pre-filling needle leak detection device, which comprises a positive wiring column and a negative wiring column, a positive wire is arranged in the positive wiring column, and a negative wire is arranged in the negative wiring column. The upper ends of the positive electrode wiring column and the negative electrode wiring column are connected with a channel assembly for transmitting an electrode wire; the channel assembly is connected with an electrode plate assembly and is used for detecting a pre-filled needle product; the pre-filled needle product is connected to the clamping jaw assembly, and the clamping jaw assembly is used for driving the pre-filled needle product to rotate for detection; the upper ends of the positive wire and the negative wire penetrate through the channel assembly and are connected with the electrode plate assembly, and the lower ends of the positive wire and the negative wire are connected with the PLC assembly. The utility model aims to overcome the defects in the prior art, and provides the pre-filling needle leak detection device which can detect tiny leak holes, cracks, needle holes and the like of products.

Description

Technical Field

[0001] The utility model relates to a pre-filled needle leakage detection device. Background Art

[0002] Prefilled needles, also known as prefilled injections, are a new and practical form of drug packaging that has been quietly emerging in recent years. They are made by aseptically filling the drug solution directly into a glass syringe with an injection needle. The syringe and the drug solution packaging container are combined into one. When used, there is no need for repeated aspiration, needle installation and other operations. It has the advantages of easy use, accurate dosage, and reduced pollution. It saves half the time compared to using ampoules, thereby buying precious time for combat trauma, disaster relief and clinical front-line rescue of critically ill patients.

[0003] The existing pre-filled needle needs to be tested for sealing after pre-filling to prevent leakage of the pre-filled needle. Ordinary manual testing cannot detect micropore leakage of the pre-filled needle. Therefore, a pre-filled needle leakage detection device is proposed to address the above problem. Utility Model Content

[0004] The utility model aims to overcome the existing defects and provide a pre-filling needle leak detection device, which can detect tiny leaks, cracks and pinholes of products.

[0005] The technical solution to achieve the above-mentioned purpose is: a pre-filled needle leak detection device, comprising a positive wiring post and a negative wiring post, wherein a positive wire is arranged in the positive wiring post, and a negative wire is arranged in the negative wiring post; the upper ends of the positive wiring post and the negative wiring post are connected to a channel assembly for transmitting electrode wires; an electrode sheet assembly is connected to the channel assembly for detecting pre-filled needle products; the pre-filled needle products are connected to a clamping jaw assembly, and the clamping jaw assembly is used to drive the pre-filled needle products to rotate for detection; the upper ends of the positive wire and the negative wire pass through the channel assembly to connect to the electrode sheet assembly, and the lower ends are connected to the PLC assembly.

[0006] Preferably, the channel assembly includes a lower transverse plate and an upper transverse plate, the lower transverse plate is connected to the upper ends of the positive wiring column and the negative wiring column, and the upper end of the lower transverse plate is connected to the upper transverse plate.

[0007] Preferably, a first channel is provided in the positive electrode wiring column, a second channel is provided in the upper horizontal plate, and the first channel is connected to the second channel;

[0008] A third channel is arranged in the negative electrode wiring column, a fourth channel is arranged in the lower horizontal plate, and the third channel is connected to the fourth channel.

[0009] Preferably, the electrode sheet assembly includes a negative electrode sheet and a positive electrode sheet, the negative electrode sheet is connected to the right end of the lower horizontal plate; the right end of the upper horizontal plate is connected to the positive electrode plastic plate, the lower end of the positive electrode plastic plate is connected to the positive electrode metal mounting plate, and the positive electrode sheet is connected to the positive electrode metal mounting plate.

[0010] Preferably, the clamping jaw assembly includes a clamping jaw, which clamps the pre-filled needle product and is located between the negative electrode sheet and the positive electrode sheet.

[0011] Preferably, the upper end of the positive electrode line passes through the second channel to connect to the positive electrode sheet; the upper end of the negative electrode line passes through the fourth channel to connect to the negative electrode sheet.

[0012] Preferably, the positive electrode wiring post and the negative electrode wiring post are both made of insulating materials.

[0013] Preferably, the lower transverse plate and the upper transverse plate are both made of insulating materials.

[0014] Preferably, the positive electrode sheet is formed by stacking a plurality of sheet-shaped conductors.

[0015] The beneficial effects of the utility model are as follows: the pre-filled needle leak detection device can realize the liquid leakage detection of the pre-filled needle product. During the detection, the product itself rotates, and the current and voltage changes in the loop between the positive and negative poles of the high-frequency high-voltage power supply are used to determine whether the product is leaking. The device is non-contact, non-destructive detection, fast, and high in detection accuracy. It can achieve micron-level leakage hole detection to ensure the sealing integrity of the drug container. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the pre-filled needle leak detection device of the utility model;

[0017] Figure 2 It is a side view of the pre-filled needle leak detection device of the utility model;

[0018] Figure 3 It is a schematic diagram of the current when the pre-filled needle leak detection device of the utility model detects that the sealing is good;

[0019] Figure 4 This is a schematic diagram of the current when the pre-filled needle leak detection device of the utility model detects poor sealing;

[0020] Figure 5 It is a detailed diagram of the positive electrode sheet of the utility model;

[0021] Figure 6 It is a detailed diagram of the conductor of the utility model.

[0022] In the figure: 1. fixing ring; 2. positive wiring post; 3. lower horizontal plate; 4. upper horizontal plate; 5. negative electrode sheet; 6. positive electrode plastic plate; 7. positive electrode metal mounting plate; 8. positive electrode sheet; 801, conductor; 9. pre-filled needle product; 10. clamp; 11. negative wiring post; 12. positive electrode line; 13. negative electrode line; 14. first channel; 15. second channel; 16. third channel; 17. fourth channel. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] like Figure 1-2 As shown, a pre-filled needle leak detection device includes a positive wiring post 2 and a negative wiring post 11, wherein a positive line 12 is arranged in the positive wiring post 2, and a negative line 13 is arranged in the negative wiring post 11; the upper ends of the positive wiring post 2 and the negative wiring post 11 are connected to a channel assembly for transmitting electrode lines; an electrode sheet assembly is connected to the channel assembly for detecting the pre-filled needle product 9; the pre-filled needle product 9 is connected to a clamp assembly, and the clamp assembly is used to drive the pre-filled needle product 9 to rotate for detection; the upper ends of the positive line 12 and the negative line 13 pass through the channel assembly to connect the electrode sheet assembly, and the lower ends are connected to a PLC (programmable logic controller) assembly. The positive wiring post 2 and the negative wiring post 11 are both made of insulating materials.

[0026] Specifically, the PLC component includes a controller, and the lower ends of the positive line 12 and the negative line 13 are connected to the controller. The controller energizes the positive electrode sheet 8 and the negative electrode sheet 5 through the positive line 12 and the negative line 13 .

[0027] like Figure 1-2As shown, the channel assembly includes a lower horizontal plate 3 and an upper horizontal plate 4, both of which are made of insulating materials. The lower horizontal plate 3 is connected to the upper ends of the positive wiring column 2 and the negative wiring column 11, and the upper end of the lower horizontal plate 3 is connected to the upper horizontal plate 4. A first channel 14 is set in the positive wiring column 2, and a second channel 15 is set in the upper horizontal plate 4, and the first channel 14 is connected to the second channel 15; a third channel 16 is set in the negative wiring column 11, and a fourth channel 17 is set in the lower horizontal plate 3, and the third channel 16 is connected to the fourth channel 17. The upper end of the positive line 12 passes through the second channel 15 to connect to the positive electrode sheet 8; the upper end of the negative line 13 passes through the fourth channel 17 to connect to the negative electrode sheet 5.

[0028] like Figure 1 , 5 As shown in , 6, the electrode sheet assembly includes a negative electrode sheet 5 and a positive electrode sheet 8, the negative electrode sheet 5 is connected to the right end of the lower horizontal plate 3; the right end of the upper horizontal plate 4 is connected to the positive electrode plastic plate 6, the lower end of the positive electrode plastic plate 6 is connected to the positive electrode metal mounting plate 7, and the positive electrode sheet 8 is connected to the positive electrode metal mounting plate 7. The positive electrode sheet 8 is formed by stacking multiple sheet-shaped conductors 801; the front part of the conductor 801 is a sharp tip, and the angle of the sharp tip is 10°≤α≤40°.

[0029] Specifically, the clamp assembly includes a clamp 10 , which clamps the pre-filled needle product 9 and is located between the negative electrode sheet 5 and the positive electrode sheet 8 .

[0030] like Figure 2 As shown, the rotation of the clamp 10 drives the clamped pre-filled needle product 9 to rotate, and the controller energizes the positive electrode sheet 8 and the negative electrode sheet 5 through the positive line 12 and the negative line 13, and adopts a high-frequency high-voltage power supply and micro-current detection. When the product leaks, the liquid medicine will leak to the outside of the bottle, and the loop current and voltage between the positive and negative electrodes of the high-frequency high-voltage power supply will change, which will be different from the current and voltage values ​​of normal non-leaking products. After the PLC component detects these tiny changes, it can determine whether the product is leaking.

[0031] In the embodiment, the pre-filled needle leak detection device can be integrated into the pre-filled needle light inspection machine to form a light inspection and leak detection integrated machine with the pre-filled needle. The light inspection system mainly detects appearance defects and visible foreign matter, and the leak detection device is responsible for checking the leakage of the product to avoid product contamination due to tiny leaks. It can detect liquid leakage caused by tiny leaks, cracks, pinholes, breakage, etc. The positive wiring column 2 and the negative wiring column 11 are respectively fixed by the fixing ring 1 and connected to the main bottom plate of the light inspection machine equipment.

[0032] like Figure 3 , 4 As shown in the embodiment, the basic principle of high voltage leakage detection is Ohm's law.

[0033] Z1: The resistance of the air between the discharge electrode and the sample to be tested, as well as the resistance of the sample container material.

[0034] R: Resistance of the solution in the container.

[0035] Z2: The resistance of the sample container material and the air between the detection electrode and the sample.

[0036] like Figure 3 As shown, when the container is well sealed, I1 = U / R1+R+R2, and the current measured between the electrode and the sample to be tested is small, which can be the control baseline for container sealing inspection.

[0037] like Figure 4 As shown, when the container is not sealed well, that is, when micropore leakage occurs, I2=U / R+R2. Under the same voltage, a current higher than the baseline is generated due to the change in resistance, and due to the use of high voltage, this current difference can be amplified to a level sufficient to be detected.

[0038] △I=I 2-I 1. By comparing △I with the set value (set control parameter), it can be determined whether the product sealing is qualified.

[0039] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A pre-filled needle leak detection device, characterized in that: The invention comprises a positive electrode wiring column (2) and a negative electrode wiring column (11), wherein a positive electrode line (12) is arranged in the positive electrode wiring column (2), and a negative electrode line (13) is arranged in the negative electrode wiring column (11); the upper ends of the positive electrode wiring column (2) and the negative electrode wiring column (11) are connected to a channel component for transmitting electrode lines; an electrode sheet component is connected to the channel component for detecting a pre-filled needle product (9); the pre-filled needle product (9) is connected to a clamping jaw component, and the clamping jaw component is used to drive the pre-filled needle product (9) to rotate for detection; the upper ends of the positive electrode line (12) and the negative electrode line (13) pass through the channel component to connect to the electrode sheet component, and the lower ends are connected to a PLC component.

2. The prefilled needle leak detection device according to claim 1, characterized in that: The channel assembly comprises a lower transverse plate (3) and an upper transverse plate (4), wherein the lower transverse plate (3) is connected to the upper ends of the positive electrode wiring column (2) and the negative electrode wiring column (11), and the upper end of the lower transverse plate (3) is connected to the upper transverse plate (4).

3. The prefilled needle leak detection device according to claim 2, characterized in that: A first channel (14) is provided in the positive electrode wiring column (2), a second channel (15) is provided in the upper horizontal plate (4), and the first channel (14) is connected to the second channel (15); A third channel (16) is provided in the negative electrode wiring column (11), a fourth channel (17) is provided in the lower horizontal plate (3), and the third channel (16) is communicated with the fourth channel (17).

4. The prefilled needle leak detection device according to claim 3, characterized in that: The electrode sheet assembly comprises a negative electrode sheet (5) and a positive electrode sheet (8), wherein the negative electrode sheet (5) is connected to the right end of the lower horizontal plate (3); the right end of the upper horizontal plate (4) is connected to the positive electrode plastic plate (6), the lower end of the positive electrode plastic plate (6) is connected to the positive electrode metal mounting plate (7), and the positive electrode sheet (8) is connected to the positive electrode metal mounting plate (7).

5. The prefilled needle leak detection device according to claim 4, characterized in that: The clamping jaw assembly comprises a clamping jaw (10), wherein the clamping jaw (10) clamps the pre-filled needle product (9) and is located between the negative electrode sheet (5) and the positive electrode sheet (8).

6. The prefilled needle leak detection device according to claim 4, characterized in that: The upper end of the positive electrode line (12) passes through the second channel (15) to connect to the positive electrode sheet (8); the upper end of the negative electrode line (13) passes through the fourth channel (17) to connect to the negative electrode sheet (5).

7. The prefilled needle leak detection device according to claim 1, characterized in that: The positive electrode wiring post (2) and the negative electrode wiring post (11) are both made of insulating materials.

8. The prefilled needle leak detection device according to claim 2, characterized in that: The lower transverse plate (3) and the upper transverse plate (4) are both made of insulating materials.

9. The prefilled needle leak detection device according to claim 4, characterized in that: The positive electrode sheet (8) is formed by stacking a plurality of sheet-shaped conductors (801).

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