Pen type injection needle taking device

Abstract

The utility model discloses a pen type injection needle taking device which comprises a sleeve shell and an injection needle and is characterized in that the sleeve shell comprises a containing cavity and a pressing cavity, the containing cavity and the pressing cavity are both of a hollow cylinder structure and are communicated through a through hole, the injection needle is matched with the containing cavity, the injection needle comprises a needle head and a pintle, and the pintle is matched with the containing cavity. The pressing cavity comprises a pressing block, a hollow rod, hanging lugs and a telescopic spring, the hanging lugs are fixed to the two sides of the pressing block, one end of the telescopic spring is fixedly connected with the bottom of the pressing cavity, the other end of the telescopic spring is fixedly connected with the bottoms of the hanging lugs, and the pressing block is arranged in the through hole. Meanwhile, the disposable syringe is small and exquisite in structure, interference fit between the pintle and the containing cavity can well prevent the injection needle from falling off accidentally, pollution of the injection needle is avoided, and the disposable syringe is reasonable in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a pen-type injection needle taking device. Background Art

[0002] There are few existing devices for storing pen-type injection needles. The storage and retrieval of needles has always been a relatively delicate task, mainly because the needles are long. If they are not properly placed, the needles can easily cause injuries to medical workers during use. Therefore, in the design of injection needle retrieval devices, the first thing to do is to deal with the storage position of the needles, and the second is how to take the needles out of the device. In the prior art, there are very few patents related to the retrieval of injection needles. How to ensure the retrieval and storage of injection needles is a technical problem that needs to be solved urgently. Utility Model Content

[0003] The utility model discloses a pen-type injection needle taking device, which has a compact structure and can well store the needles. When in use, the needles can be taken out by only pressing, and the use is convenient and reasonable.

[0004] The utility model discloses a pen-type injection needle taking device, comprising a sleeve shell and an injection needle, characterized in that the sleeve shell comprises a accommodating chamber and a pressing chamber, the accommodating chamber and the pressing chamber are both hollow cylindrical structures, the two are connected through a through hole, the injection needle cooperates with the accommodating chamber, the injection needle comprises a needle head and a needle bolt, the pressing chamber comprises a pressing block, a hollow rod, a hanging ear and a telescopic spring, the pressing block is fixed with hanging ears on both sides, one end of the telescopic spring is fixedly connected to the bottom of the pressing chamber, and the other end is fixedly connected to the bottom of the hanging ear, the pressing block is placed in the through hole, the hollow rod is fixed to the bottom of the pressing block, and the taking device also comprises a cover cap, and the cover cap is threadably matched with the bottom of the accommodating chamber.

[0005] Preferably, the outer circumference of the pintle is equal to the diameter of the inner wall of the accommodating cavity.

[0006] Preferably, the pressing block is a cylindrical structure, and the diameter of the pressing block is equal to that of the through hole.

[0007] Preferably, the hollow rod is concentrically arranged with the accommodating cavity, and the needle extends into the hollow rod.

[0008] Preferably, the height of the accommodating cavity is 8-10 cm, and the height of the hollow rod is 4-5 cm.

[0009] Preferably, a blocking rod is provided at the top of the pressing cavity, and the blocking rod is arranged above the hanging ear.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a reasonable structure and utilizes a hollow rod to store the needle. When in use, after pressing the pressing block, the hollow rod moves down and abuts against the needle bolt, and the needle bolt moves down to facilitate the removal of the needle. At the same time, the utility model has a compact structure, and the overall stability of the device is achieved through the cover cap and the blocking rod. The interference fit between the needle bolt and the accommodating cavity can also prevent the injection needle from accidentally falling off and avoid contamination of the injection needle. The structure is reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a front view of the utility model;

[0013] Figure 3 It is a cross-sectional view of the base of the utility model.

[0014] In the figure, 1. shell, 11. accommodating chamber, 12. pressing chamber, 121. pressing block, 122. hollow rod, 123. hanging ear, 124. telescopic spring, 2. injection needle, 21. needle, 22. needle plug, 3. cover cap. DETAILED DESCRIPTION

[0015] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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. In addition, if the terms "first", "second", and "third" are used, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] As shown in the figure, a pen-type injection needle taking device includes a housing 1 and an injection needle 2. The housing includes a receiving chamber 11 and a pressing chamber 12. The receiving chamber 11 and the pressing chamber 12 are both hollow cylindrical structures. The two are connected through a through hole. The injection needle 2 cooperates with the receiving chamber 11. The injection needle 2 includes a needle head 21 and a needle plug 22. The pressing chamber 12 includes a pressing block 121, a hollow rod 122, a hanging ear 123 and a telescopic spring 124. The two sides of the pressing block 121 are fixed with hanging ears 123, and the telescopic spring 124 is provided with a telescopic spring 124. One end of the compression spring 124 is fixedly connected to the bottom of the pressing chamber 12, and the other end is fixedly connected to the bottom of the ear 123. The pressing block 121 is placed in the through hole, and the pressing block 121 moves up and down along the through hole. When the device is stationary, the pressing block 121 is partially located in the accommodating chamber 11, effectively blocking the accommodating chamber 11. The hollow rod 122 is fixed to the bottom of the pressing block 121. The taking device also includes a cap 3, which is threadedly matched with the bottom of the accommodating chamber 11, and the cap 3 is detachably installed at the bottom of the accommodating chamber 11.

[0019] As a further improvement of the present invention, the outer circumference of the needle plug 22 is equal to the diameter of the inner wall of the accommodating cavity 11, and the two are interference fit. When the injection needle 2 is placed in the accommodating cavity 11, it will not fall off easily.

[0020] As a further improvement of the present invention, the pressing block 121 is a cylindrical structure, and the pressing block 121 has a diameter equal to that of the through hole. The pressing block 121 is used to block the through hole and drive the hollow rod 122 to move downward.

[0021] As a further improvement of the present invention, the hollow rod 122 is arranged concentrically with the accommodating cavity 11, and the needle 21 extends into the hollow rod 122. When the pressing block 121 moves downward, the hollow rod 122 drives the needle bolt 22 to move downward.

[0022] As a further improvement of the present invention, the height of the accommodating cavity 11 is 8 cm, and the height of the hollow rod 122 is 4 cm.

[0023] As a further improvement of the present invention, a blocking rod is provided on the top of the pressing chamber 12, and the blocking rod is provided above the hanging ear 123. The function of the blocking rod is to prevent the hanging ear 123 from moving upward and limit its moving distance.

[0024] The utility model has a reasonable structure, and the hollow rod 122 is used to store the needle 21. When in use, after pressing the pressing block 121, the hollow rod 122 moves down to abut against the needle plug 22. The needle plug 22 moves down to facilitate the removal of the needle 21. At the same time, the utility model has a compact structure, and the overall stability of the device is achieved through the cover cap 3 and the blocking rod. The interference fit between the needle plug 22 and the accommodating chamber 11 can also well prevent the injection needle from accidentally falling off, avoiding contamination of the injection needle, and the structure is reasonable.

[0025] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A pen-type injection needle taking device, comprising a housing and an injection needle, characterized in that: The shell includes a accommodating chamber and a pressing chamber, both of which are hollow cylindrical structures and are connected through a through hole. The injection needle cooperates with the accommodating chamber, and the injection needle includes a needle head and a needle bolt. The pressing chamber includes a pressing block, a hollow rod, a hanging ear and a telescopic spring. Hanging ears are fixed on both sides of the pressing block, one end of the telescopic spring is fixed to the bottom of the pressing chamber, and the other end is fixed to the bottom of the hanging ear. The pressing block is placed in the through hole, and the hollow rod is fixed to the bottom of the pressing block. The taking device also includes a cap, and the cap is threadedly matched with the bottom of the accommodating chamber.

2. A pen-type injection needle taking device according to claim 1, characterized in that: The outer circumference of the pintle is equal to the diameter of the inner wall of the accommodating cavity.

3. A pen-type injection needle taking device according to claim 1, characterized in that: The pressing block is a cylindrical structure, and the diameter of the pressing block is equal to that of the through hole.

4. A pen-type injection needle taking device according to claim 1, characterized in that: The hollow rod is arranged concentrically with the accommodating cavity, and the needle extends into the hollow rod.

5. The pen-type injection needle taking device according to claim 1, characterized in that: The height of the accommodating cavity is 8-10 cm, and the height of the hollow rod is 4-5 cm.

6. The pen-type injection needle taking device according to claim 1, characterized in that: A blocking rod is arranged on the top of the pressing cavity, and the blocking rod is arranged above the hanging ear.

Images