Nitrogen charging mechanism for heating wire drawing

By using a heated, drawn-through, nitrogen-filled mechanism to inject nitrogen into the ampoule during the sealing process, the problem of contact between the liquid medicine and air is solved, thus achieving high stability and long shelf life of the medicine.

CN224277666UActive Publication Date: 2026-05-26YANGTZE RIVER PHARM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANGTZE RIVER PHARM GRP CO LTD
Filing Date
2025-06-09
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In the existing technology, the liquid medicine comes into contact with air during the sealing process of ampoules, making it difficult to meet the dissolved oxygen level, which affects the stability and shelf life of the medicine.

Method used

A heated drawing and nitrogen-filling mechanism is used, which utilizes symmetrically arranged drawing pliers and nitrogen-filling needles to fill nitrogen into the ampoule during the sealing process, reducing the chance of the liquid medicine coming into contact with air.

Benefits of technology

It effectively reduces the dissolved oxygen content in the drug solution, improves the quality and stability of the drug, and extends its shelf life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of ampoule top nitrogen charging, and discloses a heating wiredrawing nitrogen charging mechanism which comprises a wiredrawing mechanism body, a nitrogen charging needle head hole is formed in the top of the wiredrawing mechanism in a penetrating mode, a wiredrawing clamp fixing hole is formed in the side edge of the wiredrawing mechanism, and a nitrogen charging needle head fixing hole is formed in the side edge of the wiredrawing mechanism. Nitrogen charging needles are fixed through the nitrogen charging needle fixing holes, and wire drawing pliers are fixed through the wire drawing pliers fixing holes. According to the utility model, the wiredrawing pliers are symmetrically arranged, so that the ampoule bottle can be sealed during heating, and nitrogen is filled into the ampoule through the nitrogen filling needle head when the ampoule is sealed, so that the dissolved oxygen content of liquid medicine is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of nitrogen filling technology for ampoule tops, and in particular to a heating and drawing nitrogen filling mechanism. Background Technology

[0002] Ampoules are small, sealed vials typically used to store injectable medications or other pharmaceutical products. Because many drugs are sensitive to oxygen, exposure to air can lead to oxidation, affecting the active ingredients, reducing efficacy, or even altering the drug's properties. Therefore, taking measures to prevent medication from contacting air is crucial during the ampoule manufacturing process, especially in the sealing stage.

[0003] Currently, traditional nitrogen-filling technology for ampoules typically involves filling with nitrogen before and after the medication is filled using the filling needle to reduce the dissolved oxygen content in the medication. However, this conventional wire-drawing nitrogen-filling mechanism design leaves the medication in contact with air for a period before sealing, which fails to completely ensure that the dissolved oxygen level is minimized. To address this issue, an innovative heated wire-drawing nitrogen-filling scheme has been proposed. This scheme aims to further reduce the opportunity for the medication to come into contact with air during the sealing process by improving the existing nitrogen-filling process, thereby more effectively reducing the dissolved oxygen level in the medication. This method not only improves the stability of the medication but also enhances its shelf life and safety. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a heating, drawing, and nitrogen-filling mechanism. This mechanism aims to overcome the problem in the prior art where the liquid medicine is easily exposed to air during the sealing process, resulting in difficulty in achieving the required dissolved oxygen levels. This allows for a more effective reduction of dissolved oxygen content in the liquid medicine, thereby improving the quality and stability of the medicine.

[0005] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows:

[0006] A heating wire drawing and nitrogen filling mechanism includes a wire drawing mechanism, a nitrogen filling needle, and wire drawing pliers. The nitrogen filling needle is provided through the top of the wire drawing mechanism, and the wire drawing pliers are symmetrically arranged on both sides of the wire drawing mechanism.

[0007] Furthermore, it also includes wire puller fixing screw one and wire puller fixing screw two.

[0008] Furthermore, the wire drawing pliers are fixed to the wire drawing mechanism by wire drawing pliers fixing screw one and wire drawing pliers fixing screw two.

[0009] Furthermore, it also includes the nitrogen-filling needle fixing screw.

[0010] Furthermore, the nitrogen-filling needle is fixed to the wire drawing mechanism by a nitrogen-filling needle fixing screw.

[0011] Furthermore, the nitrogen-filling needle fills the ampoule with nitrogen gas during the sealing process.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention relates to a heating, drawing, and nitrogen-filling mechanism. By employing symmetrically arranged drawing pliers, it ensures reliable sealing of the ampoule during the heating process. Simultaneously, nitrogen gas is injected into the ampoule using a nitrogen-filling needle during the sealing process. This avoids the problem of the liquid medicine coming into contact with air during the sealing process, which could lead to insufficient dissolved oxygen levels. As a result, it more effectively reduces the dissolved oxygen content in the liquid medicine and improves the quality and stability of the medicine. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of a heating, drawing, and nitrogen-filling mechanism proposed in this utility model;

[0015] Figure 2 This is a frontal three-dimensional structural diagram of a heating, drawing, and nitrogen-filling mechanism proposed in this utility model;

[0016] Figure 3 This is a side cross-sectional view of a heating, drawing, and nitrogen-filling mechanism proposed in this utility model.

[0017] Appendix Label Reference Table:

[0018] 1. Wire drawing pliers fixing screw one; 2. Nitrogen filling needle; 3. Wire drawing mechanism; 4. Nitrogen filling needle fixing screw; 5. Wire drawing pliers fixing screw two; 6. Wire drawing pliers. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0020] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0021] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] like Figures 1 to 3As shown, a heated drawing and nitrogen-filling mechanism includes a drawing mechanism 3 with a through-hole nitrogen-filling needle 2 at its top. The drawing mechanism 3 has a drawing pliers fixing screw 1 and a drawing pliers fixing screw 5 on its side for fixing a drawing pliers 6, and a nitrogen-filling needle fixing screw 4 for installing the nitrogen-filling needle 2. This fixing structure ensures that the nitrogen-filling needle 2 and the drawing pliers 6 are accurately positioned and securely connected during installation. During the ampoule sealing process, nitrogen gas is injected into the ampoule through the nitrogen-filling needle 2, effectively reducing the chance of the liquid medicine coming into contact with air, thereby further reducing the dissolved oxygen content in the liquid medicine. This design not only improves the stability of the medicine but also enhances its storage safety and shelf life.

[0023] Working principle: By using symmetrically arranged wire-drawing pliers 6, the ampoule can be reliably sealed during the heating process. At the same time, nitrogen is injected into the ampoule using nitrogen-filling needle 2 during the sealing process, avoiding the problem of the medicine liquid coming into contact with air during the sealing process, which would lead to the dissolved oxygen content being difficult to meet the standard. This effectively reduces the dissolved oxygen content in the medicine liquid and improves the quality and stability of the medicine.

[0024] The above description is only a preferred embodiment of this utility model patent and is not intended to limit this utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model patent should be included within the protection scope of this utility model patent.

Claims

1. A heating, drawing, and nitrogen-filling mechanism, comprising a drawing mechanism (3), characterized in that, It also includes a nitrogen-filling needle (2) and a wire drawing pliers (6). The top of the wire drawing mechanism (3) is provided with a nitrogen-filling needle (2), and the wire drawing pliers (6) are symmetrically arranged on both sides of the wire drawing mechanism (3).

2. The heating, drawing, and nitrogen-filling mechanism according to claim 1, characterized in that: It also includes wire drawing pliers fixing screw one (1) and wire drawing pliers fixing screw two (5).

3. The heating, drawing, and nitrogen-filling mechanism according to claim 2, characterized in that: The wire drawing pliers (6) are fixed to the wire drawing mechanism (3) by wire drawing pliers fixing screw one (1) and wire drawing pliers fixing screw two (5).

4. The heating, drawing, and nitrogen-filling mechanism according to claim 3, characterized in that: It also includes the nitrogen filling needle fixing screw (4).

5. The heating, drawing, and nitrogen-filling mechanism according to claim 4, characterized in that: The nitrogen-filling needle (2) is fixed to the wire drawing mechanism (3) by the nitrogen-filling needle fixing screw (4).

6. The heating, drawing, and nitrogen-filling mechanism according to claim 5, characterized in that: The nitrogen-filling needle (2) fills the ampoule with nitrogen gas when sealing the ampoule.