A syringe

Abstract

The utility model relates to the technical field of medicine industry injection tool discloses a syringe, including needle cylinder, piston rod, the front end of needle cylinder is equipped with needle, one end of piston rod is equipped with piston head, the other end of piston rod is equipped with the grip area, the piston rod sets up in needle cylinder, can push into the other end from one end in needle cylinder, the outer wall of needle cylinder is equipped with the protective shell and slides, the protective shell can slide along the outer wall of needle cylinder, and the length of protective shell is greater than the length of needle, the utility model can immediately isolate needle, avoid medical staff or patient to be accidentally stabbed, reduce the risk of blood source infection, when recycling, reduce the exposure risk, avoid the stab and simplify medical expense processing procedure, convenient operation, one hand can complete the sliding of protective shell, need not additional step, be suitable for emergency scene, controllable cost, simple structure, need not responsible machinery, easy to popularize.

Description

Technical Field

[0001] This utility model relates to the technical field of injection tools in the pharmaceutical industry, specifically to a syringe. Background Technology

[0002] Syringes are common medical tools primarily used for injecting liquid medications, drawing bodily fluids, or performing precise fluid measurements. Existing syringes typically consist of a syringe barrel, plunger, and needle. Syringes are officially used for vaccination, subcutaneous injection, intravenous infusion, and anesthetic administration, and their design must meet requirements for sterility, accuracy, and safety.

[0003] Although syringes are indispensable in medicine, their design and use pose a risk of needlestick injuries. For example, after using a syringe, the user needs to remove it and press on the needle hole to stop bleeding. During this process, healthcare workers or patients may accidentally prick themselves, leading to the spread of bloodborne pathogens. According to the WHO, there are approximately 1.6 million needlestick injuries globally each year. Additionally, during syringe retrieval, the needle cap needs to be replaced, and needlestick injuries can also occur during this process. Therefore, syringes need to be improved to incorporate enhanced safety mechanisms. Utility Model Content

[0004] The purpose of this invention is to provide a syringe that addresses the above-mentioned problems and solves the issue of needle prick injuries after syringe use.

[0005] To achieve the above objectives, this utility model discloses a syringe, including a syringe barrel and a piston rod. The front end of the syringe barrel is provided with a needle, one end of the piston rod is provided with a piston head, and the other end of the piston rod is provided with a gripping area. The piston rod is disposed inside the syringe barrel and can be pushed from one end of the syringe barrel to the other end.

[0006] The syringe is provided with a protective shell that slides along the outer wall of the syringe. The length of the protective shell is greater than the length of the needle.

[0007] Preferably, the protective shell is a transparent protective shell.

[0008] Preferably, the outer wall of the syringe is provided with grooves on opposite sides, the protective shell is a hollow structure, and the inner wall of the protective shell is provided with sliding nodes on opposite sides, the sliding nodes being slidably installed in the grooves.

[0009] Preferably, the two ends of the slide are respectively provided with limiting grooves.

[0010] Preferably, the front end of the slide is provided with a limiting groove, and the rear end of the slide is provided with a limiting baffle.

[0011] Preferably, the outer wall of the syringe is provided with grooves on opposite sides, the protective shell is a hollow structure, and the inner wall of the protective shell is provided with sliders on opposite sides, the sliders being slidably installed in the grooves.

[0012] Preferably, the two ends of the chute are respectively provided with limiting baffles.

[0013] Preferably, the syringe further includes a needle cap, which is fitted onto the needle tip.

[0014] Preferably, the needle cap is provided with a rubber protective sleeve.

[0015] The beneficial effects of this utility model are as follows: This utility model improves upon existing syringes by incorporating a protective mechanism. A transparent protective shell is installed on the outer wall of the syringe barrel. After use, the protective shell slides to the front end of the syringe barrel, protecting the needle tip and immediately isolating it to prevent accidental needle pricks to medical personnel or patients, thus reducing the risk of bloodborne infection. Once the protective shell is locked at the front end of the syringe barrel, it reduces the risk of exposure during retrieval, preventing needle pricks and simplifying the medical expense processing procedure. It is easy to operate, requiring only one hand to slide the protective shell without additional steps, making it suitable for emergency scenarios. The cost is controllable, the structure is simple, and it requires no complex machinery, making it easy to popularize. Furthermore, the transparent protective shell does not affect the use of the syringe's markings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the syringe of this utility model;

[0017] Figure 2 This is an exploded view of the syringe of this utility model;

[0018] Figure 3 This is a schematic diagram showing the state of the syringe after use.

[0019] Figure 4 This is a cross-sectional view of Embodiment 3 of the present invention;

[0020] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0021] Figure 6 for Figure 4 Enlarged view at point B in the middle;

[0022] Figure 7 This is a partial schematic diagram of Embodiment 4 of the present invention;

[0023] Figure 8 This is a cross-sectional view of embodiment 7 of the present invention.

[0024] Figure 9 for Figure 8 Enlarged view at point C;

[0025] Figure 10 for Figure 8 Enlarged view of point D in the middle.

[0026] In the diagram: 1. Syringe; 2. Needle cap; 3. Piston rod; 4. Protective shell; 5. Grip area; 6. Piston head; 7. Rubber protective sleeve; 8. Needle; 9. Slide groove; 10. Slider; 11. Limiting baffle; 12. Limiting groove; 13. Sliding node. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope. Example 1

[0028] like Figure 1 , Figure 2 , Figure 3 As shown, a syringe includes a syringe barrel 1 and a piston rod 3. The front end of the syringe barrel 1 is provided with a needle 8, one end of the piston rod 3 is provided with a piston head 6, and the other end of the piston rod is provided with a gripping area 5. The piston rod 3 is disposed inside the syringe barrel 1 and can be pushed from one end of the syringe barrel 1 to the other end.

[0029] The outer wall of the syringe 1 has grooves 9 on opposite sides. The protective shell 4 is made of transparent material and has a hollow structure. The inner wall of the protective shell 4 has sliding nodes 13 on opposite sides, and the sliding nodes 13 are slidably disposed in the grooves 9. Example 2

[0030] A syringe includes a syringe barrel 1 and a piston rod 3. The front end of the syringe barrel 1 is provided with a needle 8, one end of the piston rod 3 is provided with a piston head 6, and the other end of the piston rod 3 is provided with a gripping area 8. The piston rod 3 is disposed inside the syringe barrel 1 and can be pushed from one end of the syringe barrel 1 to the other end.

[0031] The outer wall of the syringe 1 is provided with grooves 9 on opposite sides. The protective shell 4 is a transparent protective shell with a hollow structure. The inner wall of the protective shell 4 is provided with sliding nodes 13 on opposite sides. The sliding nodes 13 are slidably disposed in the grooves 9. The front end of the grooves 9 is provided with a limiting groove 12. Example 3

[0032] A syringe includes a syringe barrel 1, a piston rod 3 and a needle cap 2. The front end of the syringe barrel 1 is provided with a needle 8, one end of the piston rod 3 is provided with a piston head 6, and the other end of the piston rod 3 is provided with a gripping area 5. The piston rod 3 is disposed inside the syringe barrel 1 and can be pushed from one end of the syringe barrel 1 to the other end.

[0033] like Figure 4 , Figure 5 , Figure 6As shown, the outer wall of the syringe 1 is provided with grooves 9 on opposite sides. The protective shell 4 is a transparent protective shell with a hollow structure. The inner wall of the protective shell 4 is provided with sliding nodes 13 on opposite sides. The sliding nodes 13 are slidably disposed in the grooves 9. The front end of the groove 9 is provided with a limiting groove 12, and the rear end of the groove 9 is provided with a limiting baffle 11.

[0034] The needle cap 2 has a rubber protective sleeve 7 inside, and the needle cap 2 is fitted onto the needle tip 8. Example 4

[0035] A syringe includes a syringe barrel 1, a piston rod 3 and a needle cap 2. The front end of the syringe barrel 1 is provided with a needle 8, one end of the piston rod 3 is provided with a piston head 6, and the other end of the piston rod 3 is provided with a gripping area 5. The piston rod 3 is disposed inside the syringe barrel 1 and can be pushed from one end of the syringe barrel 1 to the other end.

[0036] like Figure 7 As shown, the outer wall of the syringe 1 is provided with sliding grooves 9 on opposite sides. The protective shell 4 is a transparent protective shell with a hollow structure. The inner wall of the protective shell 4 is provided with sliding nodes 13 on opposite sides. The sliding nodes 13 are slidably disposed in the sliding grooves 9. Limiting grooves 12 are provided at both ends of the sliding grooves 9. After the syringe is used, the protective shell 4 is moved forward by force so that the sliding nodes 13 slide out of the limiting grooves 12, thereby making the protective shell 4 slide forward. When it slides to the limiting groove 12 at the front end, the protective shell 4 is fixed.

[0037] The needle cap 2 has a rubber protective sleeve 7 inside, and the needle cap 2 is fitted onto the needle tip 8. Example 5

[0038] A syringe includes a syringe barrel 1 and a piston rod 3. The front end of the syringe barrel 1 is provided with a needle 8. One end of the piston rod 3 is provided with a piston head 6. The other end of the piston rod 3 is provided with a gripping area 5. The piston rod 3 is disposed inside the syringe barrel 1 and can be pushed from one end of the syringe barrel 1 to the other end.

[0039] The outer wall of the syringe 1 is provided with grooves 9 on opposite sides. The protective shell 4 is made of transparent material and has a hollow structure. The inner wall of the protective shell 4 is provided with sliders 10 on opposite sides, and the sliders 10 are slidably installed in the grooves 9. Example 6

[0040] A syringe includes a syringe barrel 1 and a piston rod 3. The front end of the syringe barrel 1 is provided with a needle 8. One end of the piston rod 3 is provided with a piston head 6. The other end of the piston rod 3 is provided with a gripping area 5. The piston rod 3 is disposed inside the syringe barrel 1 and can be pushed from one end of the syringe barrel 1 to the other end.

[0041] The outer wall of the syringe 1 is provided with sliding grooves 9 on opposite sides. The protective shell 4 is a transparent protective shell. The protective shell 3 is a hollow structure. The inner wall of the protective shell 3 is provided with sliders 10 on opposite sides. The sliders 10 are slidably installed in the sliding grooves 9. Limiting baffles 11 are provided at both ends of the sliding grooves 9. Example 7

[0042] like Figure 8 , Figure 9 , Figure 10 As shown, a syringe includes a syringe barrel 1, a piston rod 3 and a needle cap 2. The front end of the syringe barrel 1 is provided with a needle 8, one end of the piston rod 3 is provided with a piston head 6, and the other end of the piston rod 3 is provided with a gripping area 5. The piston rod 3 is disposed inside the syringe barrel 1 and can be pushed from one end of the syringe barrel 1 to the other end.

[0043] The outer wall of the syringe 1 is provided with sliding grooves 9 on opposite sides. The protective shell 4 is a transparent protective shell with a hollow structure. The inner wall of the protective shell 4 is provided with sliders 10 on opposite sides, and the sliders 10 are slidably installed in the sliding grooves 9. Limiting baffles 11 are provided at both ends of the sliding grooves 9.

[0044] The needle cap 2 has a rubber protective sleeve 7 inside, and the needle cap 2 is fitted onto the needle tip 8. Example 8

[0045] A syringe includes a syringe barrel 1, a piston rod 3 and a needle cap 2. The front end of the syringe barrel 1 is provided with a needle 8, one end of the piston rod 3 is provided with a piston head 6, and the other end of the piston rod 3 is provided with a gripping area 5. The piston rod 3 is disposed inside the syringe barrel 1 and can be pushed from one end of the syringe barrel 1 to the other end.

[0046] A slide rail is installed between the outer wall of the syringe 1 and the inner wall of the protective shell 4 to enable the protective shell 4 to slide along the outer wall of the syringe 1. The slide rail can be any of the existing technologies, and those skilled in the art can select it as needed, which will not be elaborated here.

[0047] The needle cap 2 has a rubber protective sleeve 7 inside, and the needle cap 2 is fitted onto the needle tip 8.

[0048] syringe use front Figure 1 As shown, the protective shell 4 is wrapped around the outer wall of the syringe 1. When in use, medical staff remove the needle cap 2 and use the syringe to draw up the medicine or inject it subcutaneously. After drawing up the medicine or injecting, the protective shell 4 can be moved towards the needle 8 with one hand. When the protective shell 4 moves to the front end of the slide groove 9, the limiting groove 12 or the limiting baffle 11 limits the protective shell 4 to prevent the protective shell 4 from falling off the syringe 1. At the same time, the needle 8 is located inside the protective shell 4, which can prevent needle stick injuries after the syringe is used or retrieved. In addition, for further protection, the needle cap 2 can be placed on the needle when the needle 8 is inside the protective shell 4. At the same time, the rubber protective sleeve 7 inside the needle cap 2 can prevent the needle from puncturing the needle cap 2 and injuring the medical staff.

[0049] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A syringe, characterized in that, Includes a syringe (1) and a piston rod (3). The front end of the syringe (1) is provided with a needle (8). One end of the piston rod (3) is provided with a piston head (6). The other end of the piston rod (3) is provided with a gripping area (5). The piston rod (3) is located inside the syringe (1) and can be pushed from one end of the syringe (1) to the other end. The outer wall of the syringe (1) is provided with a protective shell (4), which can slide along the outer wall of the syringe (1), and the length of the protective shell (4) is greater than the length of the needle (8).

2. The syringe according to claim 1, characterized in that, The protective shell (4) is a transparent protective shell.

3. The syringe according to claim 1, characterized in that, The syringe (1) has grooves (9) on opposite sides of its outer wall. The protective shell (4) is a hollow structure. The inner wall of the protective shell (4) has sliding nodes (13) on opposite sides. The sliding nodes (13) are slidably installed in the grooves (9).

4. The syringe according to claim 3, characterized in that, The sliding groove (9) is provided with limiting grooves (12) at both ends.

5. The syringe according to claim 3, characterized in that, The front end of the slide (9) is provided with a limiting groove (12), and the rear end of the slide is provided with a limiting baffle (11).

6. The syringe according to claim 1, characterized in that, The syringe (1) has grooves (9) on opposite sides of its outer wall. The protective shell (4) is a hollow structure. The inner wall of the protective shell (4) has sliders (10) on opposite sides. The sliders (10) are slidably installed in the grooves (9).

7. The syringe according to claim 6, characterized in that, Limiting baffles (11) are provided at both ends of the chute (9).

8. The syringe according to claim 1, characterized in that, The syringe also includes a needle cap (2), which is fitted onto the needle (8).

9. The syringe according to claim 8, characterized in that, The needle cap (2) is provided with a rubber protective sleeve (7).

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