A structure for preventing needlestick injuries

Abstract

This utility model discloses a structure for preventing needlestick injuries, belonging to the field of medical devices. The structure includes a fixed tube, with a needle tube fixedly connected to one side. A slider is slidably connected to the outer wall of the needle tube, and the slider is inserted into one side of the fixed tube. Two spring pieces are fixedly connected to one side of the slider. In this design, after the needle tube is used, medical personnel can pull the slider along the outer wall of the needle tube. Because both spring pieces are rolled up, when the tube wall slides between the two spring pieces, it is squeezed by the outer wall of the needle tube, causing the two spring pieces to be in a stretched state. When the side of the needle tip moves into the first or second movable hole, the outer wall of the needle tube loses its squeezing of the two spring pieces. When the needle tube moves to the upper middle part of the two spring pieces, the spring pieces, which are in an elastic stretched state, will rebound, thus sealing the needle tip and preventing accidental needle injury.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and more specifically, to a structure for preventing needlestick injuries. Background Technology

[0002] As a commonly used medical device, syringes are widely used in various medical procedures such as infusion, blood collection, and injection. However, the disposal of traditional syringes after use has revealed many problems that urgently need to be solved.

[0003] First, the risk of needlestick injuries remains high, seriously threatening the occupational safety of medical staff. When handling used syringes, because the needles are exposed, medical staff are very likely to suffer needlestick injuries by accidentally touching the needles while organizing instruments or placing syringes into medical waste collection containers. According to relevant authoritative statistics, without effective protective measures, once a needlestick injury occurs, medical staff face a huge risk of cross-infection of blood-borne diseases, such as hepatitis B, hepatitis C, and AIDS. This poses a great potential threat to the physical and mental health of medical staff and also brings serious safety hazards to the medical work environment.

[0004] Therefore, a structure for preventing needlestick injuries is proposed to address the above problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of this utility model is to provide a structure for preventing needlestick injuries, so as to solve the problems mentioned in the background art.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A structure for preventing needlestick injuries includes a fixed tube, a needle tube fixedly connected to one side of the fixed tube, a slider slidably connected to the outer wall of the needle tube, the slider being inserted into one side of the fixed tube, and two spring pieces fixedly connected to one side of the slider. The middle portions of the two spring pieces are respectively provided with a first movable hole and a second movable hole, and the needle tube is slidably connected inside the first movable hole and the second movable hole respectively.

[0010] Furthermore, a miniature spring is fixedly connected inside the fixed tube, and a limit block is fixedly connected to one end of the miniature spring. The limit block is slidably connected inside the fixed tube.

[0011] Furthermore, a limiting hole is formed on the outer wall of the slider, and the limiting block is engaged inside the limiting hole.

[0012] Furthermore, a heparin cap is threadedly connected to the upper part of the fixing tube, and a connecting tube is fixedly connected to one side of the fixing tube.

[0013] Furthermore, an infusion tube is connected to the end of the connecting tube away from the fixed tube.

[0014] Furthermore, a needle-holding handle is fixedly connected to one side of the fixing tube.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] In this procedure, after the syringe is used, medical staff can pull the sliding block along the outer wall of the syringe. Since both springs are rolled up, when the syringe wall slides between the two springs, it is squeezed by the outer wall of the syringe, and the two springs are in a stretched state. When the side part of the syringe needle moves into the first or second movable hole, the outer wall of the syringe will lose the squeezing of the two springs. When the syringe moves to the middle and above the two springs, the springs, which are in an elastic stretched state, will spring back, thereby completing the sealing of the syringe needle and preventing accidental needle injury. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the fixed tube in this utility model;

[0020] Figure 3 For the present utility model Figure 2 Schematic diagram of the structure at point A in the middle;

[0021] Figure 4 This is a schematic diagram showing the positional relationship between the sliding block and the spring sheet in this utility model;

[0022] Figure 5 This is a schematic diagram showing the positional relationship between the limiting block, the miniature spring, and the fixing tube in this utility model.

[0023] Explanation of the labels in the diagram:

[0024] 1. Fixing tube; 11. Heparin cap; 12. Connecting tube; 13. Infusion tube; 14. Needle holder handle; 15. Miniature spring; 16. Limiting block; 17. Sliding block; 18. Limiting hole; 19. Spring; 2. No. 1 movable hole; 21. No. 2 movable hole; 22. Needle tube. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example:

[0029] Please see Figure 1-5 A structure for preventing needlestick injuries includes a fixed tube 1, with a needle tube 22 fixedly connected to one side of the fixed tube 1. A slider 17 is slidably connected to the outer wall of the needle tube 22, and the slider 17 is inserted into one side of the fixed tube 1. Two spring pieces 19 are fixedly connected to one side of the slider 17. The middle portions of the two spring pieces 19 are respectively provided with a first movable hole 2 and a second movable hole 21. The needle tube 22 is slidably connected inside the first movable hole 2 and the second movable hole 21. In this design, both spring pieces 19 are in a coiled shape. When the tube wall of the needle tube 22... When the needle slides between the two spring pieces 19, it is squeezed by the outer wall of the needle tube 22, and the two spring pieces 19 are in a stretched state. When the side part of the needle tip of the needle tube 22 moves into the first movable hole 2 or the second movable hole 21, the outer wall of the needle tube 22 will lose the squeezing of the two spring pieces 19. When the needle tube 22 moves to the middle and above the two spring pieces 19, the spring pieces 19, which are in a state of elastic stretching, will rebound, thereby completing the sealing of the needle tip of the needle tube 22, thus achieving the purpose of preventing accidental needle injury.

[0030] Please see Figure 1-5 A miniature spring 15 is fixedly connected inside the fixed tube 1. One end of the miniature spring 15 is fixedly connected to a limiting block 16. The limiting block 16 is slidably connected inside the fixed tube 1. In this design, one side of the limiting block 16 is arc-shaped. When the limiting block 16 moves inside the fixed tube 1, the miniature spring 15 will undergo elastic deformation and contraction.

[0031] Please see Figure 1-5 The outer wall of the slider 17 has a limiting hole 18, and the limiting block 16 is snapped into the inside of the limiting hole 18. In this solution, the fixing between the slider 17 and the fixing tube 1 is completed by the snapping between the limiting hole 18 and the limiting block 16.

[0032] Please see Figure 1-5 The upper part of the fixation tube 1 is threaded with a heparin cap 11, and a connecting tube 12 is fixedly connected to one side of the fixation tube 1. In this solution, when the medical staff unscrews the heparin cap 11, the fixation tube 1 and the syringe can be directly connected.

[0033] Please see Figure 1-5 The end of the connecting tube 12 away from the fixed tube 1 is connected to the infusion tube 13. In this scheme, the medicine inside the infusion bottle is transported to the connecting tube 12 through the infusion tube 13 and flows out from the needle of the needle tube 22 after passing through the fixed tube 1.

[0034] Please see Figure 1-5 A needle-holding handle 14 is fixedly connected to one side of the fixed tube 1. In this design, the surface of the needle-holding handle 14 is provided with crisscrossing grooves for anti-slip texture. During puncture operations, when medical personnel hold the needle-holding handle 14, the anti-slip texture increases the friction between the hand and the needle-holding handle 14, allowing medical personnel to accurately control the insertion angle and force of the needle tube 22. The needle-holding handle 14 adopts an ergonomically designed arc-shaped structure, the curvature of which matches the natural curve of the human hand when holding it. During prolonged puncture operations, such as performing multiple consecutive intravenous punctures, the medical personnel's hands can naturally and comfortably hold the needle-holding handle 14, effectively reducing hand fatigue and improving the accuracy and stability of the operation.

[0035] Working principle: The heparin cap 11 is threaded onto the top of the fixed tube 1 to ensure the sealing of the inside of the fixed tube 1 and prevent foreign objects from entering;

[0036] Observe the infusion tube 13. Because it is made of transparent medical-grade polyvinyl chloride, the tube wall thickness is uniform, and it is clear whether there are impurities inside the tube. Confirm that the infusion tube 13 is not damaged or bent, which may affect the infusion. The medical staff holds the needle handle 14. The crisscross grooves on the surface of the needle handle 14 can effectively increase the friction between the hand and the needle handle 14, making it easy to hold accurately. Its ergonomic arc structure matches the natural curve of the human hand when holding it, reducing hand fatigue during long-term operation. If it is necessary to connect the fixed tube 1 to the syringe for operations such as drawing medicine, the medical staff unscrews the heparin cap 11. The threaded part of the heparin cap 11 adopts the standard medical thread specification.

[0037] Pushing slider 17 causes the limiting hole 18 on the outer wall of slider 17 to gradually approach the limiting block 16 inside the fixed tube 1. Under the action of miniature spring 15, the limiting block 16 moves away from slider 17. Miniature spring 15 is a cylindrical helical spring with its elastic coefficient precisely calculated and adjusted. While ensuring the flexible sliding of the limiting block 16, it can provide stable and appropriate elastic force to the limiting block 16. The outer wall of the limiting block 16 is provided with a wear-resistant coating made of polytetrafluoroethylene, which can effectively reduce the friction between the limiting block 16 and the inner wall of the fixed tube 1 and extend the service life of the device.

[0038] Medical staff hold the needle handle 14 and insert the needle 22 into the patient's skin to perform a puncture operation;

[0039] After a successful puncture, if the infusion tube 13 is connected, the medication inside the infusion bottle will flow through the infusion tube 13, through the connecting tube 12, through the fixing tube 1, and finally out from the needle tip of the needle tube 22 into the patient's body to begin the infusion process.

[0040] After the infusion is completed, the medical staff will remove the needle 22. As the needle 22 is withdrawn, when the side part of the needle tip moves into the first movable hole 2 or the second movable hole 21, the outer wall of the needle 22 will lose the pressure on the two spring pieces 19.

[0041] When the syringe 22 continues to move above the middle of the two spring pieces 19, the spring pieces 19, which are in an elastically stretched state, will quickly rebound. Due to their high elasticity and fatigue resistance, they can stably seal the needle tip of the syringe 22, thereby preventing accidental needle injury.

[0042] If the device needs to be used again in the future, the above-described puncture preparation stage can be repeated.

[0043] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A structure for preventing needle stick injuries, comprising a fixed tube (1), characterized in that: A needle tube (22) is fixedly connected to one side of the fixed tube (1). A slider (17) is slidably connected to the outer wall of the needle tube (22). The slider (17) is inserted into one side of the fixed tube (1). Two spring pieces (19) are fixedly connected to one side of the slider (17). The middle part of the two spring pieces (19) is respectively provided with a first movable hole (2) and a second movable hole (21). The needle tube (22) is slidably connected inside the first movable hole (2) and the second movable hole (21).

2. A structure for preventing needle stick injuries according to claim 1, wherein: A miniature spring (15) is fixedly connected inside the fixed tube (1), and a limiting block (16) is fixedly connected to one end of the miniature spring (15). The limiting block (16) is slidably connected inside the fixed tube (1).

3. A structure for preventing needle stick injuries according to claim 2, wherein: The outer wall of the slider (17) has a limiting hole (18), and the limiting block (16) is engaged inside the limiting hole (18).

4. A structure for preventing needle stick injuries according to claim 3, wherein: The upper part of the fixed tube (1) is threaded with a heparin cap (11), and a connecting tube (12) is fixedly connected to one side of the fixed tube (1).

5. A structure for preventing needle stick injuries according to claim 4, wherein: The end of the connecting tube (12) away from the fixed tube (1) is connected to an infusion tube (13).

6. A structure for preventing needle stick injuries according to claim 1, wherein: A needle-holding handle (14) is fixedly connected to one side of the fixing tube (1).

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