Disposable front-end type self-destruction syringe
By designing the self-destructive slope and dovetail metal snap ring structure in the front section of the core rod in the disposable syringe, the self-destruction of the syringe after the injection is achieved, solving the problem of cross-infection of bacteria caused by the susceptibility of reuse of traditional syringes, and improving safety And simplified the production process.
Patent Information
- Application Number
- CN202323172289.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-23
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-11-23
AI Technical Summary
Traditional disposable syringes are easily recycled and reused, resulting in cross-infection of bacteria and disease transmission. The existing self-destruction devices need to be manually triggered and are not completely reliable, and cannot effectively prevent reuse.
A disposable front-end self-destructing syringe that can be self-destructed after use is designed, using a self-destructing slope at the front section of the core rod and a dovetail metal snap ring structure. When the injection is completed, the puncture is restricted and punctured to achieve the syringe. Total destruction.
Ensure that the syringe cannot be reused after use, prevent cross-infection of bacteria and disease transmission, and the core rod structure is simple and the production process is relatively simple, reducing mold cost and process requirements.
Smart Images
Figure CN222150653U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment, and specifically relates to a syringe, in particular to a disposable front-end self-destructive syringe. Background Art
[0002] Traditional disposable syringes are recycled, sold and reused due to poor management or profit-driven by some medical institutions, resulting in secondary cross-infection of germs, which spreads diseases such as hepatitis B and AIDS. In order to limit the occurrence of these bad behaviors and prevent cross-infection and medical transmission of diseases, organizations such as the World Health Organization and the United Nations Children's Fund have proposed self-destructive syringes that can be self-destructed or locked after use and cannot be reused. The Chinese government responded positively and promised to fully implement the plan of using self-destructive syringes for vaccination in 2005.
[0003] At present, the disposable sterile syringes used at home and abroad. Due to structural reasons, they are not completely disposable in terms of performance. People only need to slightly adjust the syringe to reuse it. For example, most of the known vaccine syringes at home and abroad are self-destructive at the rear end, and medical staff must manually push the core rod to the bottom of the jacket to trigger the self-destruct device. However, if the liquid medicine is not pushed out, the self-destruct device will not be triggered, resulting in the syringe being reusable. Summary of the invention
[0004] The present invention aims to invent a disposable front-end self-destructing syringe which can self-destruct after use, so as to overcome the shortcomings of the existing technology.
[0005] A disposable front-end self-destructing syringe comprises a core rod (1), an outer sleeve (2), a dovetail metal clamp ring (3), a piston (4), a needle (5), and a sheath (6). The characteristics are: the front section of the core rod (1) can be provided with a plurality of self-destructing slopes, and the self-destructing slopes are oriented in the direction of the piston (4), the self-destructing slopes and the core rod (1) form a fixed area, and the middle section of the core rod (1) is provided with a positioning groove, and the positioning groove is convenient for fixing the position of the dovetail metal clamp ring (3). The dovetail metal clamp ring (3) is provided with a limit withdrawal thorn, and when the self-destructing slope does not touch the dovetail metal clamp ring when the core rod (1) absorbs the liquid medicine, at this stage the core rod can be pushed back and forth to dissolve the medicine. When the dovetail metal clamp (3) passes through the self-destruction slope, the self-destruction performance of this stage is activated and maintained continuously; when the dovetail metal clamp (3) passes through the last self-destruction slope, the injection starts after the gas in the outer jacket is exhausted; when the injection is finished, the dovetail metal clamp (3) follows the core rod (1) to the bottom of the outer jacket (2). The dovetail metal clamp (3) is provided with limit withdrawal thorns on both sides to contact the inside of the outer jacket (2). When the self-destruction is activated or the injection is finished, the core rod (1) is locked, and when the core rod (1) is forcibly pulled out, the limit withdrawal thorns will pierce the outer jacket (2), thereby achieving the purpose of self-destruction.
[0006] When the core rod (1) absorbs the liquid medicine and the self-destruction slope does not touch the dovetail metal clamp ring, the core rod (1) can move forward and backward normally, and the exhaust can be repeated multiple times at this stage. As the dovetail metal clamp ring (3) passes through the self-destruction slope and enters the fixed area, the core rod (1) cannot move backward and can only move forward because the withdrawal limit thorn is embedded in the inner wall of the outer jacket (2). When the core rod (1) moves to the front end of the outer jacket (2), the core rod (1) can neither move backward nor move forward, and the purpose of self-destruction is achieved. If it is pulled back strongly, the withdrawal limit thorn will pierce the inner wall of the outer jacket (2), causing the outer jacket (2) to be punctured. In this way, the entire syringe is completely destroyed.
[0007] Furthermore, a disposable front-end self-destructing syringe is characterized in that: the dovetail metal clamp (3) is U-shaped and has a dovetail structure, and is provided with limit withdrawal thorns on both sides, so that the metal clamp (3) can easily pass through the self-destructing slope to reach the fixed area.
[0008] Furthermore, a disposable front-end self-destructing syringe is characterized in that the dovetail metal clamp ring (3) is placed in coordination with the positioning groove.
[0009] Furthermore, a disposable front-end self-destructing syringe is characterized in that the withdrawal-limiting thorns on both sides of the dovetail metal clamp (3) meet a certain angle, and when the self-destruction is activated or the injection is completed, the core rod (1) is locked, and forcibly pulling out the core rod (1) will puncture the inner wall of the outer sleeve (2).
[0010] Furthermore, a disposable front-end self-destructing syringe is characterized in that the dovetail metal clamp ring (3) is formed by stamping and bending a sheet metal material.
[0011] Furthermore, the disposable front-end self-destructing syringe is characterized in that the self-destructing slope on the core rod (1) can enable the dovetail metal clamping ring to enter the fixing area and fix the dovetail metal clamping ring (3).
[0012] Furthermore, a disposable front-end self-destructing syringe is characterized in that: the dovetail metal clamp ring (3) is made of austenitic stainless steel.
[0013] Compared with the existing disposable self-destructing syringes, the core rod structure of the utility model is simpler, and a self-destructing slope is provided at the front end of the core rod. Compared with other similar products that adopt a round or hollow core rod, the utility model is designed based on an ordinary core rod, without changing the high stability of the core rod itself. The position of the self-destructing slope takes into account the ability to freely exhaust and extract multiple times before self-destruction begins in clinical practice. The core rod of the utility model is more stable than the core rods of similar domestic syringes, and the mold cost and process requirements are lower than those of similar syringes. The dovetail metal clamp has a simple structure and high stability. The bending process is relatively less than that of similar syringes, and the production process is also simpler. The required mold precision is also lower than that of similar products. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the core rod structure of the utility model.
[0015] FIG2 is a schematic diagram of the metal clamp structure of the utility model.
[0016] Figure 3 shows Figure 2 Top view,
[0017] FIG4 is a schematic diagram of the structure of the utility model.
[0018] Figure 5 is a schematic diagram of the utility model before injection.
[0019] Figure 6 is a schematic diagram of the utility model after injection,
[0020] Figure 7 It is a schematic diagram of the utility model after self-destruction. DETAILED DESCRIPTION
[0021] A disposable front-end self-destructing syringe comprises a core rod (1), an outer sleeve (2), a dovetail metal clamp ring (3), a piston (4), a needle (5), and a sheath (6). The characteristics are: the front section of the core rod (1) can be provided with a plurality of self-destructing slopes, and the self-destructing slopes are oriented in the direction of the piston (4), the self-destructing slopes and the core rod (1) form a fixed area, and the middle section of the core rod (1) is provided with a positioning groove, and the positioning groove is convenient for fixing the position of the dovetail metal clamp ring (3). The dovetail metal clamp ring (3) is provided with a limit withdrawal thorn, and when the self-destructing slope does not touch the dovetail metal clamp ring when the core rod (1) absorbs the liquid medicine, at this stage the core rod can be pushed back and forth to dissolve the medicine. When the dovetail metal clamp (3) passes through the self-destruction slope, the self-destruction performance of this stage is activated and maintained continuously; when the dovetail metal clamp (3) passes through the last self-destruction slope, the injection starts after the gas in the outer jacket is exhausted; when the injection is finished, the dovetail metal clamp (3) follows the core rod (1) to the bottom of the outer jacket (2). The dovetail metal clamp (3) is provided with limit withdrawal thorns on both sides to contact the inside of the outer jacket (2). When the self-destruction is activated or the injection is finished, the core rod (1) is locked, and the core rod (1) is forcibly pulled out. The limit withdrawal thorns will pierce the outer jacket (2), achieving the purpose of self-destruction. When not in use, the dovetail metal clamp (3) is close to the positioning groove. When in use, the core rod (1) is retracted to extract the liquid medicine, the dovetail metal clamp is separated from the positioning groove, and the self-destruction slope on the core rod (1) slowly passes through the dovetail metal clamp (3), and the limit withdrawal thorns are pressed against the inner wall of the outer jacket, so that the core rod (1) can ensure the stability of the dovetail metal clamp (3) when it is retracted. When the injection starts, the dovetail metal clamp (3) presses against the self-destruct slope, so that the dovetail metal clamp (3), the core rod (1) and the piston (4) are pushed forward together; the self-destruct effect is maintained continuously from the activation, and at this time, the core rod (1) is locked by the dovetail metal clamp (3) and cannot be withdrawn. If the core rod (1) is forcibly pulled out, the limited withdrawal pierces the outer sleeve (2), thereby achieving the purpose of self-destruction.
Claims
1. A disposable front-end self-destructing syringe, comprising a core rod (1), a jacket (2), a dovetail metal clamp (3), a piston (4), a needle (5), and a sheath (6), characterized in that: a front section of the core rod (1) can be provided with a plurality of self-destructing slopes, and the self-destructing slopes are oriented in the direction of the piston (4), the self-destructing slopes and the core rod (1) form a fixed area, a positioning groove is provided in the middle section of the core rod (1), the positioning groove is convenient for fixing the position of the dovetail metal clamp (3), and a limit withdrawal thorn is provided on the dovetail metal clamp (3), when the core rod (1) absorbs liquid medicine, the self-destructing slope does not touch the dovetail metal clamp When the dovetail metal clamp (3) passes the self-destruction slope, the self-destruction performance of this stage is activated and maintained continuously; when the dovetail metal clamp (3) passes the last self-destruction slope, the injection starts after the gas in the outer jacket is exhausted; when the injection is finished, the dovetail metal clamp (3) follows the core rod (1) to the bottom of the outer jacket (2), and the dovetail metal clamp (3) is provided with limit withdrawal thorns on both sides to contact the inside of the outer jacket (2). When the self-destruction is activated or the injection is finished, the core rod (1) is locked, and the limit withdrawal thorns will pierce the outer jacket (2) when the core rod (1) is forcibly pulled out, thereby achieving the purpose of self-destruction.
2. The disposable front-end self-destructing syringe according to claim 1, characterized in that: The dovetail-type metal clamp (3) is U-shaped and has a dovetail structure, and is provided with retreat-limiting spikes on both sides. The metal clamp (3) passes through a self-destruction slope to reach a fixed area.
3. The disposable front-end self-destructing syringe according to claim 1, characterized in that: The dovetail type metal clamp ring (3) is placed to match the positioning groove.
4. The disposable front-end self-destructing syringe according to claim 1, characterized in that: The withdrawal-limiting thorns on both sides of the dovetail metal clamp (3) have an angle, and when the self-destruction is activated or the injection is completed, the core rod (1) is locked, and forcibly pulling out the core rod will puncture the inner wall of the outer sleeve (2).
5. The disposable front-end self-destructing syringe according to claim 1 or 4, characterized in that The self-destruct slope on the core rod (1) is fixedly connected to a dovetail-type metal clamp ring (3).