Disposable retraction self-destruction syringe

Abstract

The utility model discloses a disposable retraction self-destruction syringe, which relates to the field of medical detection instruments and laboratory consumables and comprises a needle cylinder, a push rod structure, a needle head and a needle head protection sleeve. The push rod structure and the needle cylinder are additionally provided with hemispherical structures, so that the hemispherical structure of the push rod structure can be combined with the hemispherical structure of the needle cylinder after use; in the pulling-out process of the push rod structure, the rubber plug at the top end of the push rod structure is separated from the push rod structure, secondary use of the syringe is prevented, and therefore the self-destruction purpose is achieved.

Description

Technical Field

[0001] The utility model relates to the field of medical testing instruments and laboratory consumables, and particularly designs a disposable retractable self-destructive syringe. Background Art

[0002] Disposable syringes are the most commonly used medical tools in the field of medical testing equipment and laboratory consumables. They are mainly used to inject or extract liquids such as drugs, blood or gas during medical or experimental processes. Disposable syringes are widely used in the medical and experimental fields due to their convenience and hygiene. However, not everyone can use disposable syringes safely, which often leads to cross infection, so disposable self-destructive syringes have gradually attracted attention. Summary of the invention

[0003] The utility model aims to provide a disposable retractable self-destructive syringe, which is convenient for medical and experimental operators to use, has a simple structure, is easy to use, and greatly improves the use efficiency.

[0004] A retractable self-destructive syringe, characterized in that it includes a syringe, a push rod structure, a rubber structure, a hemispherical protrusion, a hemispherical groove, a needle, and a needle protection sleeve. A hemispherical groove is added to the top of the syringe; a hemispherical protrusion is added to the top of the push rod structure, and the protruding part can be interlocked with the hemispherical groove at the top of the syringe.

[0005] To further describe the present invention, the syringe body can be a 1ml, 2ml, 2.5ml, 3ml, 5ml, 10ml, 20ml, 25ml, 30ml, 35ml, 50ml, or 60ml syringe.

[0006] Further description of the utility model: a hemispherical groove is provided at the top of the syringe near the liquid inlet, which interlocks with the hemispherical protrusion at the top of the push rod structure. After the push rod structure is completely pushed into the bottom of the syringe, the hemispherical protrusion of the rubber structure and the hemispherical groove of the syringe are tightly interlocked through friction and the hemispherical groove to form a locking structure, ensuring that the push rod is fixed after use and cannot be pulled back to the initial position. When the user tries to pull back the push rod, the friction force of the push rod structure acts on the rubber structure, generating resistance, causing the hemispherical protrusion of the rubber structure to gradually separate from the main part of the push rod, and finally the rubber structure falls off from the top of the push rod, thereby achieving a self-destruction function.

[0007] The utility model has the following advantages: the utility model provides a disposable retractable syringe, a hemispherical concave structure is added near the liquid inlet at the top of the syringe, which can be interlocked with the hemispherical structure of the push rod structure, a hemispherical structure is added to the rubber top of the push rod structure, and the hemispherical structure can be interlocked with the hemispherical concave structure at the top of the syringe, and the rubber structure falls off due to the resistance of the hemispherical structure during the pull-back process of the push rod structure, thereby achieving self-destruction. Compared with conventional disposable syringes, it can effectively prevent the syringe from being used twice and reduce the risk of cross contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a front view of the utility model.

[0009] Figure 2 It is a partial enlarged view of the front view of the utility model.

[0010] Figure 3 It is a front view of the push rod structure of the utility model.

[0011] Figure 4 It is a front view of the syringe of the present utility model.

[0012] Figure 5 It is a front view of a specific connection structure in which a hemispherical groove and a hemispherical protrusion are engaged with each other in the utility model.

[0013] Figure 6 It is a front view of the rubber structure falling off process during the push rod pulling back process of the utility model.

[0014] Among them: 1-syringe; 2-push rod structure; 3-rubber structure; 4-hemispherical protrusion; 5-hemispherical groove; 6-needle; 7-needle protection sleeve DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] like Figure 1 As shown, a disposable retractable self-destructive syringe assembly comprises a syringe (1), a push rod structure (2), a rubber structure (3), a hemispherical protrusion (4), a hemispherical groove (5), a needle (6) and a needle protection sleeve (7). The utility model has a hemispherical protrusion (4) made of rubber material at the top of the push rod structure (2), and a hemispherical groove (5) is provided near the liquid inlet at the top of the syringe (1) for interlocking with the hemispherical protrusion of the push rod structure.

[0017] During the injection operation, the push rod structure (2) pushes the rubber protrusion (4) to the bottom of the syringe. At this time, the rubber protrusion forms a tightly fitting locking structure with the hemispherical groove (5) on the inner wall of the syringe through friction, ensuring that the push rod structure is firmly fixed when it is fully pushed to the bottom, preventing the push rod from being pulled back to the initial position again after the operation is completed ( Figure 5 ).

[0018] During the push rod pull-back attempt, due to the interlocking effect of the hemispherical groove and the hemispherical protrusion, the rubber protrusion was subjected to greater resistance in the pull-back direction, causing the rubber protrusion to gradually separate from the main part of the push rod ( Figure 6 ). This separation process has been achieved in the design through the selection of rubber materials and the optimization of the fitting force, ensuring that the rubber protrusion can naturally fall off from the top of the push rod when the push rod is pulled back. At this time, the push rod structure loses the top rubber seal, resulting in the syringe being unable to re-form an effective sealing state, completely achieving self-destruction and eliminating the secondary use of the syringe.

[0019] In this embodiment, the syringe materials are all made of non-toxic and harmless materials.

[0020] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A disposable retractable self-destructive syringe, characterized in that: It includes a syringe, a push rod structure, a needle, and a needle protection sleeve. A hemispherical rubber structure is added to the top of the push rod structure, and a hemispherical groove is added to the top of the syringe, so that the hemispherical rubber structure can be combined with the hemispherical groove of the syringe after the push rod structure is pushed in. During the process of pulling out the rod structure, the rubber plug at the top of the push rod structure is separated from the push rod structure.

2. The disposable retractable self-destructive syringe according to claim 1, characterized in that: The syringe body can be a 1ml, 2ml, 2.5ml, 3ml, 5ml, 10ml, 20ml, 25ml, 30ml, 35ml, 50ml, or 60ml syringe.

3. The disposable retractable self-destructive syringe according to claim 1, characterized in that: The push rod structure rubber structure adds a hemispherical structure, and the diameter of the hemispherical structure is smaller than the inner diameter of the syringe.

4. The disposable retractable self-destructive syringe according to claim 1, characterized in that: A hemispherical groove is added to the top of the syringe, and the hemispherical groove of the syringe can be embedded with the hemispherical structure of the push rod structure.

5. The disposable retractable self-destructive syringe according to claim 1, characterized in that: After the hemispherical groove of the syringe can be engaged with the hemispherical structure of the push rod structure, the rubber plug of the push rod structure and the push rod structure are separated from each other during the pull-back process, thereby achieving the purpose of self-destruction.

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