Needle-hidden injection device with observation window

Abstract

The utility model discloses a needle-hidden injection device with an observation window. The needle-hidden injection device comprises a refill frame, a pen cap, a needle-hidden cap and an octagonal plug, the pen cap is arranged on the refill frame in a buckled mode, a guide groove is formed between the refill frame and the pen cap, and the needle hiding cap is inserted into the guide groove. The octagonal plug is fixedly arranged at one end of the refill frame, and the inner side face of the octagonal plug makes contact with the pen cap. According to the utility model, the observation window is arranged, so that the liquid medicine amount can be visually observed, the injection dosage can be accurately controlled, and the medication safety is ensured.

Description

Technical Field

[0001] The utility model relates to an injection device, in particular to a hidden needle injection device with an observation window. Background Art

[0002] In the pharmaceutical field, especially in home self-injection and clinical treatment, accurately controlling the injection dose and medication safety are crucial. Existing injection devices often lack an intuitive liquid medicine volume observation window, making it difficult for users to precisely control the dose during injection. In addition, the disassembly and replacement of some injection devices are relatively complex, which is not conducive to rapid operation by users. Therefore, a hidden needle injection device with an observation window is needed. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a hidden needle injection device with an observation window to solve the problems existing in the background art.

[0004] The hidden needle injection device with an observation window of the utility model is realized through the following technical solutions, including: a cartridge holder, a pen cap, a hidden needle cap, and an octagonal plug;

[0005] The pen cap is snap-fitted on the cartridge holder. A guide groove is provided between the cartridge holder and the pen cap, and the hidden needle cap is inserted into the guide groove; the octagonal plug is fixedly arranged at one end of the cartridge holder, and the inner side surface of the octagonal plug is in contact with the pen cap.

[0006] As a preferred technical solution, a pressure spring is provided between the guide groove and the hidden needle cap, and the other end of the pressure spring is in contact with the insertion end of the hidden needle cap.

[0007] As a preferred technical solution, observation windows are symmetrically arranged on the pen cap, and corresponding observation windows are also arranged on the hidden needle cap. The liquid medicine volume is observed through the observation windows.

[0008] As a preferred technical solution, an extrusion column is arranged on the octagonal plug, and the extrusion column is placed inside the cartridge holder. The head end of the medicine bottle is abutted by the extrusion column to facilitate the disassembly of the medicine bottle.

[0009] As a preferred technical solution, a limiting ring is arranged inside the octagonal plug, and a fixed cavity is formed between the limiting ring and the outer side of the octagonal plug. The octagonal plug and the pen cap are fixed through the fixed cavity; the limiting ring of the octagonal plug abuts against the cartridge holder, and the extrusion column is arranged inside the limiting ring

[0010] As a preferred technical solution, the cartridge holder is replaceable, and is respectively a cartridge holder N and a cartridge holder U.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model is provided with an observation window, which can visually observe the amount of liquid medicine, facilitate the accurate control of the injection dose, and ensure the safety of medication.

[0013] 2. The utility model is easy to disassemble and replace. The octagonal plug is provided with an extrusion column, which facilitates the contact and disassembly of the head end of the medicine bottle, improving the convenience of use. At the same time, the pen core holder is replaceable to meet different needs. In addition, through the setting of the octagonal plug, it can be placed on a flat table to prevent rolling and breaking.

[0014] 3. The pressure spring between the pen cap and the pen core holder of the utility model makes the injection process more comfortable. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 It is a sectional structural schematic diagram of the present utility model;

[0018] Figure 3 It is a structural schematic diagram of the pen core holder N of the present utility model;

[0019] Figure 4 It is a structural schematic diagram of the pen core holder U of the present utility model;

[0020] Figure 5 It is a structural schematic diagram of the pen cap of the present utility model;

[0021] Figure 6 It is a structural schematic diagram of the octagonal plug of the present utility model;

[0022] Figure 7 It is a structural schematic diagram of the hidden needle cap of the present utility model.

[0023] Description of the Reference Numerals:

[0024] 2. Pen cap; 3. Hidden needle cap; 4. Octagonal plug; 5. Guide groove; 6. Pressure spring; 7. Observation window; 8. Extrusion column; 9. Pen core holder N; 10. Pen core holder U. Detailed Embodiments

[0025] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0026] like Figure 1 - Figure 2 As shown, a hidden needle injection device with an observation window of the utility model comprises: a refill frame, a pen cap 2, a hidden needle cap 3 and an octagonal plug 4;

[0027] The pen cap 2 is buckled and arranged on the pen core frame, a guide groove 5 is arranged between the pen core frame and the pen cap 2, and the hidden needle cap is inserted into the guide groove 5, and the function of the guide groove 5 is to facilitate the insertion and removal of the hidden needle cap 3; the octagonal plug 4 is fixedly arranged at one end of the pen core frame, and the inner side surface of the octagonal plug 4 is in contact with the pen cap 2.

[0028] A pressure spring 6 is provided between the guide groove 5 and the hidden needle cap, and the other end of the pressure spring 6 is in contact with the insertion end of the hidden needle cap; appropriate pressure can be provided during the injection process, thereby ensuring accurate output of the drug.

[0029] like Figure 5 - Figure 6 As shown, the pen cap 2 is provided with an observation window 7, and the observation windows 7 are symmetrically arranged, and the hidden needle cap 3 is also provided with an observation window corresponding to the pen cap, so that the user can clearly see the remaining amount of the drug, which is convenient for controlling the injection process;

[0030] like Figure 7 As shown, a squeezing column 8 is provided on the octagonal plug 4, and the squeezing column 8 is placed in the refill frame. The squeezing column 8 is used to resist the head end of the medicine bottle, so as to facilitate the disassembly of the medicine bottle.

[0031] Among them, a limiting ring 11 is arranged on the inner side of the octagonal plug 4, and the limiting ring 11 and the outer side of the octagonal plug 4 form a fixed cavity, and the octagonal plug 4 and the pen cap 2 are fixed through the fixed cavity; the limiting ring 11 of the octagonal plug 4 is in conflict with the pen core frame, and the extrusion column 8 is arranged on the inner side of the limiting ring 11.

[0032] like Figure 3 - Figure 4 As shown, the refill holder is replaceable, namely, the refill holder N9 and the refill holder U10, which can take into account the needs of different users, so that the utility model has a wider range of applications.

[0033] In summary, the hidden needle injection device with an observation window proposed by the utility model realizes accurate and convenient injection of drugs through the synergistic effect of various components. It not only has excellent performance, but also is easy to use, which greatly improves the user experience. On this basis, we also designed a replaceable pen core holder to further enhance the practicality and adaptability of the device.

[0034] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope defined by the claims.

Claims

1. A hidden needle injection device with an observation window, characterized in that: include: A pen core holder, a pen cap (2), a hidden needle cap (3) and an octagonal plug (4); The pen cap (2) is buckled and arranged on the pen core frame, a guide groove (5) is arranged between the pen core frame and the pen cap (2), and the hidden needle cap is inserted into the guide groove (5); the octagonal plug (4) is fixedly arranged at one end of the pen core frame, and the inner side surface of the octagonal plug (4) is in contact with the pen cap (2).

2. The hidden needle injection device with an observation window according to claim 1, characterized in that: A pressure spring (6) is arranged between the guide groove (5) and the hidden needle cap, and the other end of the pressure spring (6) is in contact with the insertion end of the hidden needle cap.

3. The hidden needle injection device with an observation window according to claim 1, characterized in that: The pen cap (2) is symmetrically provided with an observation window (7), and the hidden needle cap (3) is also provided with an observation window (7) corresponding to the pen cap, and the amount of medicine can be observed through the observation window (7).

4. The hidden needle injection device with an observation window according to claim 1, characterized in that: The octagonal plug (4) is provided with a squeezing column (8), and the squeezing column (8) is placed in the refill frame. The squeezing column (8) is used to abut against the head end of the medicine bottle, so that the medicine bottle can be easily disassembled.

5. The hidden needle injection device with an observation window according to claim 1, characterized in that: A limiting ring is arranged on the inner side of the octagonal plug (4), and a fixing cavity is formed between the limiting ring and the outer side of the octagonal plug (4), and the octagonal plug (4) and the pen cap (2) are fixed via the fixing cavity; the limiting ring of the octagonal plug (4) abuts against the pen core frame, and the extrusion column (8) is arranged on the inner side of the limiting ring.

6. The hidden needle injection device with an observation window according to claim 1, characterized in that: The refill racks are replaceable, and are respectively the refill rack N (9) and the refill rack U (10).

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