Self-destructive syringe
By introducing a slot and spring mechanism into the syringe, the problem that existing syringes are difficult to prevent reuse is solved, and the self-destructive design of the syringe is realized, simplifying the destruction process and improving safety and convenience.
Patent Information
- Application Number
- CN202421327873.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-06-12
AI Technical Summary
The existing syringe is difficult to prevent reuse efficiently and easily after use, and the traditional way of breaking the push rod is cumbersome and has poor results.
A self-destructive syringe is designed. By setting a slot and a spring mechanism inside the push rod, the card is inserted into the fixing ring after the drug injection is completed, and the card block enters the slot and fixing support rod to prevent reuse.
It realizes automatic fixation of the syringe after use, prevents reuse, simplifies the destruction process, and improves safety and convenience after use.
Smart Images
Figure CN223127010U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of syringes, and specifically relates to a self-destructing syringe. Background Art
[0002] A syringe is a common medical tool, and its working principle mainly depends on the coordinated use of a needle and a piston. A syringe consists of a barrel with a small hole at the front end and a piston core rod that matches it, and is used to inject a small amount of liquid or extract liquid from areas that cannot be accessed by other methods.
[0003] After the existing syringes are used up, most of them are to draw out the push rod and then break it. This method of destruction is relatively cumbersome, and if the force is too small, the push rod cannot be completely broken. Content of the Utility Model
[0004] (I) Technical Problems to be Solved
[0005] In view of the deficiencies of the prior art, the utility model provides a self-destructing syringe.
[0006] (II) Technical Solutions
[0007] To achieve the above object, the utility model provides the following technical solution: a self-destructing syringe, including a syringe body, a rubber stopper is arranged inside the syringe body, a push rod is arranged at the upper end of the rubber stopper, an empty groove is arranged inside the push rod, a clamping groove is arranged on the inner wall of the empty groove, a first spring is arranged at the bottom of the empty groove, the bottom end of the first spring is fixed at the bottom of the empty groove, a support rod is arranged at the top end of the first spring, a pressing plate is fixedly arranged at the top end of the support rod, a cavity is arranged in the middle part of the support rod, a second spring is arranged inside the cavity, a clamping block that cooperates with the clamping groove is arranged at one end of the second spring, and an inclined surface is arranged at the bottom end of the clamping block.
[0008] Further, an improvement of the utility model is that both the clamping block and the clamping groove are trapezoidal.
[0009] Further, an improvement of the utility model is that a plurality of positioning blocks are arranged at the top end of the syringe body, positioning grooves penetrated by a fixing ring are arranged on the positioning blocks, and an elastic plate for limiting the pressing plate is arranged at the upper end of the positioning blocks.
[0010] Further, an improvement of the utility model is that the elastic plate and the positioning block are of an integral structure.
[0011] Further, an improvement of the utility model is that the elastic plate is made of elastic plastic material.
[0012] (III) Beneficial Effects
[0013] Compared with the prior art, the utility model provides a self-destructing syringe, which has the following beneficial effects:
[0014] For this self-destructing syringe, after the drug injection is completed by this structure, the rubber stopper will contact the bottom of the syringe body. At this time, when the pressing plate is continuously pressed, when the pressure is greater than the resilience of the first spring, the first spring will be compressed, so that the rod can be inserted into the inner part of the empty slot. At this time, the clamping block will compress the second spring. When the clamping block moves to the clamping groove, the second spring resets, enabling the clamping block to enter the inner part of the clamping groove. Since the top end of the clamping block is a plane, the rod will be fixed in the empty slot at this time, and the pressing plate will be inserted into the fixing ring at this time. Then the fixing ring will no longer be pulled, so that the syringe body cannot be reused. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a three-dimensional structural schematic diagram of the utility model;
[0016] Figure 2 is a schematic diagram of the cooperation structure of the rod and the push rod in the utility model;
[0017] Figure 3 For the utility model Figure 1 is a partial enlarged structural schematic diagram of part A in the utility model;
[0018] Figure 4 For the utility model Figure 1 is a side view;
[0019] In the figure: 1, syringe body; 2, fixing ring; 3, push rod; 4, pressing plate; 5, rod; 6, cavity; 7, clamping block; 8, empty slot; 9, clamping groove; 10, first spring; 11, positioning block; 12, elastic plate; 13, positioning groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0021] Please refer to Figures 1-4, a self-destructing syringe, comprising a syringe body 1, wherein a rubber stopper is arranged inside the syringe body 1, a push rod 3 is arranged at the upper end of the rubber stopper, an empty groove 8 is arranged inside the push rod 3, a clamping groove 9 is arranged on the inner wall of the empty groove 8, a first spring 10 is arranged at the bottom of the empty groove 8, the bottom end of the first spring 10 is fixed at the bottom of the empty groove 8, a support rod 5 is arranged at the top end of the first spring 10, a pressing plate 4 is fixedly arranged at the top end of the support rod 5, a cavity 6 is arranged in the middle part of the support rod 5, a second spring is arranged inside the cavity 6, a clamping block 7 which cooperates with the clamping groove 9 is arranged at one end of the second spring, and an inclined surface is arranged at the bottom end of the clamping block 7;
[0022] In this structure, the first spring 10 has a certain toughness. By pulling the pressing plate 4, the support rod 5 can pull the push rod 3 to move through the first spring 10, so that the rubber stopper can move inside the syringe body 1. When the drug injection of this structure is completed, the rubber stopper will contact the bottom of the syringe body 1. At this time, continue to press the pressing plate 4. When the pressure is greater than the toughness of the first spring 10, the first spring 10 will be compressed, so that the support rod 5 can be inserted into the empty groove 8. At this time, the clamping block 7 will compress the second spring. When the clamping block 7 moves to the clamping groove 9, the second spring resets, enabling the clamping block 7 to enter the clamping groove 9. Since the top end of the clamping block 7 is a plane, the support rod 5 will be fixed in the empty groove 8 at this time, and the pressing plate 4 will be inserted into the fixing ring 2 at this time. Then the fixing ring 2 will no longer be pulled, so that the syringe body 1 cannot be reused.
[0023] Further, both the clamping block 7 and the clamping groove 9 are trapezoidal.
[0024] Further, a plurality of positioning blocks 11 are arranged at the top end of the syringe body 1. A positioning groove 13 penetrated by the fixing ring 2 is arranged on the positioning blocks 11. An elastic plate 12 for limiting the pressing plate 4 is arranged at the upper end of the positioning blocks 11. The elastic plate 12 and the positioning blocks 11 are of an integral structure. The elastic plate 12 is made of elastic plastic material. The pressing plate 4 can be limited by the elastic plate 12, and the elastic plate 12 can be limited by the positioning blocks 11, so as to avoid accidental pressing of the pressing plate 4 during the process of taking the syringe body 1. When the syringe body 1 is needed, the elastic plate 12 is forcefully toggled to disassemble the positioning blocks 11 on the fixing ring 2. It should be noted here that the elastic force of the elastic plate 12 is greater than the elastic forces of the first spring 10 and the second spring.
[0025] In the description herein, it should be noted that relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising", or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made in these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A self-destructing syringe, comprising a syringe body (1), wherein a rubber stopper is provided inside the syringe body (1), and a push rod (3) is provided at the upper end of the rubber stopper, characterized in that: An empty groove (8) is provided inside the push rod (3). A clamping groove (9) is provided on the inner wall of the empty groove (8). A first spring (10) is provided at the bottom of the empty groove (8). The bottom end of the first spring (10) is fixed to the bottom of the empty groove (8). A support rod (5) is provided at the top end of the first spring (10). A pressing plate (4) is fixedly arranged at the top end of the support rod (5). A cavity (6) is provided in the middle part of the support rod (5). A second spring is provided inside the cavity (6). A clamping block (7) that cooperates with the clamping groove (9) is provided at one end of the second spring. An inclined surface is provided at the bottom end of the clamping block (7).
2. The self-destructing syringe according to claim 1, wherein: Both the clamping block (7) and the clamping groove (9) are trapezoidal.
3. The self-destructing syringe according to claim 2, wherein: A plurality of positioning blocks (11) are provided at the top end of the syringe body (1). A positioning groove (13) penetrated by a fixing ring (2) is provided on the positioning block (11). An elastic plate (12) for limiting the pressing plate (4) is provided at the upper end of the positioning block (11).
4. The self-destructing syringe according to claim 3, characterized in that: The elastic plate (12) and the positioning block (11) are of an integral structure.
5. The self-destructing syringe according to claim 4, characterized in that: The elastic plate (12) is made of elastic plastic material.