A syringe needle anti-dropping structure

Abstract

The utility model discloses a syringe needle anti -drop structure, including syringe body and install on the needle body of syringe body, the connecting end of needle body and syringe body is provided with the snap ring of external convex, the connecting place of syringe body and syringe body is provided with the positioning piece, the positioning piece includes the positioning sleeve of jointing in the lower part of syringe body side, the lower part of positioning sleeve side is fixed with the annular positioning card of the snap ring spacing, this syringe needle anti -drop structure is used in the positioning of needle body and syringe body connecting place, prevents the needle body from falling from syringe body under the action of the air pressure in the sealed bottle or under the external force in the medicine preparation process, and the use of syringe is convenient.

Description

Technical Field

[0001] This utility model relates to the field of syringe technology, specifically to a syringe needle anti-dislodgement structure. Background Technology

[0002] As a commonly used medical device, syringes can be used for patient drug injection or drug preparation. When preparing drugs, since powdered drugs are usually stored in sealed bottles, it is necessary to first inject a solution such as glucose into the sealed bottle to dissolve them, and then withdraw the mixed solution from the sealed bottle. However, when injecting the solution into the sealed bottle, because the air inside the sealed bottle is not circulating, the injection of the solution will cause the pressure inside the bottle to increase rapidly. Affected by the air pressure, the needle can easily be pushed off the syringe and fall off, which is not conducive to drug preparation. Moreover, after the needle falls off, the solution injected into the sealed bottle will spray out through the needle, resulting in drug waste and easy environmental pollution. Therefore, syringes have shortcomings in use. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a syringe needle anti-detachment structure for positioning at the connection between the needle body and the syringe body, preventing the needle body from falling off the syringe body due to the air pressure inside the sealed bottle or external force during the drug preparation process, facilitating the use of the syringe, and effectively solving the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a syringe needle anti-dislodgement structure, comprising a syringe body and a needle body mounted on the syringe body, wherein a protruding retaining ring is provided at the connection end between the needle body and the syringe body, and a positioning component is provided at the connection between the syringe body and the syringe body, wherein the positioning component includes a positioning sleeve that is snapped into the lower side of the syringe body, and an annular positioning clip that limits the retaining ring is fixed to the lower side of the positioning sleeve.

[0005] As a preferred technical solution of this utility model, the positioning sleeve is provided with a number of elongated holes evenly distributed on its side, and the number of elongated holes divide the upper part of the positioning sleeve into a number of positioning plates. The positioning sleeve is provided with a constraint member for fastening and shrinking the number of positioning plates.

[0006] As a preferred embodiment of this utility model, the constraint member includes a positioning ring, the inner side of which is engaged with the outer side of the positioning sleeve.

[0007] As a preferred embodiment of this utility model, the outer side of the positioning sleeve is provided with an external thread, and the inner side of the positioning ring is provided with an internal thread that matches the external thread.

[0008] As a preferred technical solution of this utility model, a number of anti-slip strips are provided on the outer side of the positioning ring.

[0009] As a preferred embodiment of this utility model, the inner side of the positioning sleeve is provided with anti-slip texture.

[0010] Compared with the prior art, the beneficial effects of this utility model are: The syringe needle anti-detachment structure of this utility model is used for positioning at the connection between the needle body and the syringe body, preventing the needle body from falling off the syringe body due to the air pressure inside the sealed bottle or external force during the drug preparation process, thus facilitating the use of the syringe. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure after the positioning ring is removed in this utility model; Figure 3 This is a cross-sectional view of the positioning sleeve in this utility model; Figure 4 This is a schematic diagram of the positioning component in this utility model.

[0012] In the diagram: 1. Syringe body, 2. Needle body, 21. Snap ring, 3. Positioning component, 31. Positioning sleeve, 32. Circular positioning clip, 33. Positioning ring. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-4 This utility model provides a technical solution: a syringe needle anti-dislodgement structure, including a syringe body 1 and a needle body 2 installed on the syringe body 1. A protruding retaining ring 21 is provided at the connection end between the needle body 2 and the syringe body 1. It should be noted that the retaining ring 21 is a conventional structure attached to the needle body 2, and is not a new structure added to the needle body 2 in this technical solution. A positioning component 3 is provided at the connection between the syringe body 1 and the syringe body 2. The positioning component 3 is detachable. The application of the positioning component 3 does not require changing the structure of the conventional syringe body 1 and needle body 2. It can be directly used for existing syringe bodies 1 and needle bodies 2. It is only necessary to set the corresponding size according to the model of the syringe body 1.

[0015] The positioning component 3 includes a positioning sleeve 31 that snaps onto the lower side of the syringe body 1. An annular positioning clip 32, which limits the movement of the retaining ring 21, is fixed to the lower side of the positioning sleeve 31. The positioning sleeve 31 is fitted onto the lower side of the syringe body 1, and the annular positioning clip 32 on the side of the positioning sleeve 31 constrains and limits the retaining ring 21 on the needle body 2, ensuring an effective connection between the needle body 2 and the syringe body 1. It should be noted that the positioning component 3 mentioned above must correspond to the dimensions of the syringe body 1; that is, the inner side of the positioning sleeve 31 must be in contact with the outer side of the syringe body 1, so that the positioning sleeve 31 is effectively snapped onto the syringe body 1. Preferably, the inner side of the positioning sleeve 31 is provided with anti-slip textures. These textures increase the friction when the positioning sleeve 31 contacts the syringe body 1, thereby improving the structural strength of the positioning component 3 during use.

[0016] The positioning sleeve 31 has several elongated holes evenly distributed on its side, which divide the upper part of the positioning sleeve 31 into several positioning plates. The arrangement of the elongated holes allows the distance between two adjacent positioning plates to be changed, facilitating the retraction and tightening of the positioning sleeve 31. The positioning sleeve 31 is provided with a constraint member for tightening and retracting the positioning plates. The constraint member includes a positioning ring 33, the inner side of which engages with the outer side of the positioning sleeve 31. The positioning ring 33 securely fixes the positioning plates on the positioning sleeve 31, effectively fixing the positioning sleeve 31 to the syringe body 1, which facilitates the installation and use of the positioning member 3. After use, the positioning member 3 can be removed from the syringe body 1 first, and then the needle body 2 can be removed from the syringe body 1 for easy sorting and recycling.

[0017] The positioning sleeve 31 has an external thread on its outer side, and the positioning ring 33 has an internal thread that matches the external thread on its inner side. The positioning ring 33 positions the positioning sleeve 31 through a threaded connection, which facilitates the installation and use of the positioning component. Preferably, the positioning ring 33 has several anti-slip strips on its outer side, which make it easy for medical staff to rotate the positioning ring 33 to adjust its installation position.

[0018] This anti-detachment structure is used to position the needle body 2 and syringe body 1 at the connection point, preventing the needle body 2 from falling off the syringe body 1 due to air pressure inside the sealed bottle or external force during drug preparation, thus facilitating the use of the syringe.

[0019] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A syringe needle anti-dislodgement structure, comprising a syringe body (1) and a needle body (2) mounted on the syringe body (1), characterized in that: A protruding retaining ring (21) is provided at the connection end between the needle body (2) and the syringe body (1). A positioning component (3) is provided at the connection between the syringe body (1) and the syringe body (1). The positioning component (3) includes a positioning sleeve (31) that is snapped into the lower side of the syringe body (1). A ring positioning clip (32) that limits the retaining ring (21) is fixed to the lower side of the positioning sleeve (31).

2. The syringe needle anti-dislodgement structure according to claim 1, characterized in that: The positioning sleeve (31) has several elongated holes evenly distributed on its side. These holes divide the upper part of the positioning sleeve (31) into several positioning plates. The positioning sleeve (31) is provided with a constraint member for fastening and shrinking the several positioning plates.

3. The syringe needle anti-dislodgement structure according to claim 2, characterized in that: The constraint includes a positioning ring (33), the inner side of which is engaged with the outer side of the positioning sleeve (31).

4. The syringe needle anti-dislodgement structure according to claim 3, characterized in that: The positioning sleeve (31) has an external thread on its outer side, and the positioning ring (33) has an internal thread that matches the external thread on its inner side.

5. The syringe needle anti-dislodgement structure according to claim 4, characterized in that: Several anti-slip strips are provided on the outer side of the positioning ring (33).

6. The syringe needle anti-dislodgement structure according to claim 1, characterized in that: The positioning sleeve (31) has anti-slip texture on its inner side.

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