A medical syringe needle stick injury prevention device

Abstract

The utility model relates to medical instrument technical field discloses a kind of medical syringe needle head anti-stabbing protection device, including needle tube, the outer wall top of needle tube is fixedly connected with protection mechanism, the protection mechanism is used to protect needle head, the outer wall bottom of protection mechanism is fixedly connected with folding mechanism, the folding mechanism is used to increase device adaptability, the outer wall bottom of needle tube is fixedly connected with connecting mechanism;The protection mechanism includes fixed ring, and the fixed ring is fixedly connected in the outer wall bottom of needle tube.In the utility model, protection shell is wrapped needle head, by spring leaf and spring one locking, press the protection shell and slide down, fixed link opens, after loosening, it is automatically reset and locked, hose allows protection shell to adjust angle, adapt to different injection needs, when storage is placed, it plays certain buffer and prevents broken needle head, reduces waste cost and improves installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a protective device for preventing needle puncture wounds in medical syringes. Background Technology

[0002] Medical syringe needles are medical device components used in conjunction with syringes. They are typically made of medical-grade materials such as stainless steel and have specific geometric shapes and functional designs. They are used to achieve precise extraction, delivery, and injection of medications. During use, syringes prevent medical staff, patients, and waste disposal personnel from the risk of needle stick injuries due to contact with exposed needles, thereby reducing the incidence of bloodborne disease infections, cross-contamination, and medical safety accidents.

[0003] Medical syringe needle puncture protection devices refer to safety structures and components integrated or attached to medical syringe needles. These devices prevent accidental needle exposure and puncture injuries during use through physical isolation, mechanical locking, and automatic retraction technologies. By actively intervening in the needle's exposure state, they block the risk of injury caused by needle contact with the human body, while simultaneously meeting the standardization and safety requirements of medical operations. However, existing medical syringe needle puncture protection devices often require multiple brands of syringes for trauma patients. Due to mismatched base sizes, different needle protection devices are needed, and needles are prone to breakage during storage, increasing usage costs and installation efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a medical syringe needle anti-puncture protection device, which aims to improve the problem in the prior art that the needle is easily broken during storage and placement due to the mismatch of base size and the need for different needle protection devices, thus increasing the use cost and installation efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a medical syringe needle anti-puncture protection device, comprising a needle tube, a protective mechanism fixedly connected to the top of the outer wall of the needle tube, the protective mechanism being used to protect the needle tip, a folding mechanism fixedly connected to the bottom of the outer wall of the protective mechanism, the folding mechanism being used to increase the adaptability of the device, and a connecting mechanism fixedly connected to the bottom of the outer wall of the needle tube; the protective mechanism includes a fixing ring, the fixing ring being fixedly connected to the bottom of the outer wall of the needle tube, a folding plate being fixedly spaced at the top of the outer wall of the fixing ring, a protective shell being fixedly connected to the top of the outer wall of the folding plate, and a fixing component being slidably connected to the middle of the inner wall of the protective shell.

[0006] As a further description of the above technical solution: The fixing component includes a clamping tube that is slidably connected to the middle of the inner wall of the protective shell. Fixing rods are rotatably connected to the bottom of the clamping tube around its perimeter. Spring plates are rotatably connected to the middle of the inner walls of the multiple fixing rods. A spring is fixedly connected to an adjacent side of the outer wall of each fixing rod.

[0007] As a further description of the above technical solution: The folding mechanism includes a flange, which is fixedly connected to the bottom of the outer wall of the fixing ring. A flexible tube is fixedly connected to the bottom of the outer wall of the flange. A fixing cylinder is fixedly connected to the middle of the inner wall of the flexible tube. A support assembly is slidably connected to the outer wall of the flange.

[0008] As a further description of the above technical solution: The support assembly includes a connecting rod that is slidably connected to the outer wall of the flange. Nuts are threaded to the upper and lower ends of the outer wall of the connecting rod, and a nut is threaded to the middle of the outer wall of the connecting rod. Multiple springs are fixedly connected to the middle of the inner wall of the flange, and clamping plates are fixedly connected to adjacent sides of the outer walls of the multiple springs.

[0009] As a further description of the above technical solution: The connecting mechanism includes a base, which is fixedly connected to the bottom of the outer wall of the needle tube, and positioning components are fixedly connected to all four sides of the outer wall of the base.

[0010] As a further description of the above technical solution: The positioning component includes a support plate, which is fixedly connected to the outer wall of the base around the perimeter, and a sealing ring is fixedly connected to the bottom of the outer wall of the base.

[0011] As a further description of the above technical solution: The protective shell has an exhaust hole at the top of its outer wall and a funnel fixedly connected to the middle of its outer wall.

[0012] As a further description of the above technical solution: A wear-resistant ring is fixedly connected to the bottom of the outer wall of the protective shell, and a cleaning plate is fixedly connected to the bottom of the outer wall of the folding plate.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the protective shell encloses the needle and is locked by a spring plate and a spring. When the protective shell is pressed down and slides down, the fixing rod opens. After being released, it automatically resets and locks. The tubing allows the protective shell to adjust its angle to adapt to different injection needs. The support component limits the bending range, the spring provides radial preload, the base fixes the needle tube, and the positioning component enhances stability. Due to the increased base size matching, the telescopic length protects different needles. It also provides a certain buffer during storage to prevent needle breakage, reduce waste costs, and improve installation efficiency.

[0014] 2. In this utility model, the flange is connected to the main body through a fixing ring, and the bottom hose provides a flexible connection. In the support assembly, the connecting rod slides and is limited along the flange. The upper and lower nuts lock the position to adjust the flexible range. The nut limits the displacement by fixing. The spring drives the clamping plate to hug the hose fixing cylinder, compensate for deformation and maintain the clamping force. When working, the hose bends and drives the connecting rod to slide. The spring restrains and prevents instability. After it is in place, the nut locks, increasing the structural strength. Attached Figure Description

[0015] Figure 1 This is a perspective view of a medical syringe needle anti-puncture protection device proposed in this utility model; Figure 2 This is a front view of a medical syringe needle anti-puncture protection device proposed in this utility model; Figure 3 This is a structural exploded view of a medical syringe needle anti-puncture protection device proposed in this utility model; Figure 4 This is a partial structural diagram of a medical syringe needle anti-puncture protection device proposed in this utility model; Figure 5 This is a partial structural exploded view of a medical syringe needle anti-puncture protection device proposed in this utility model.

[0016] Legend: 1. Needle tube; 2. Protective mechanism; 201. Fixing ring; 202. Folding plate; 203. Protective shell; 204. Fixing assembly; 2041. Clamping tube; 2042. Fixing rod; 2043. Spring plate; 2044. Spring one; 3. Folding mechanism; 301. Flange; 302. Hose; 303. Fixing cylinder; 304. Support assembly; 3041. Connecting rod; 3042. Nut; 3043. Nut; 3044. Clamping plate; 3045. Spring two; 4. Connecting mechanism; 401. Base; 402. Positioning assembly; 4021. Support plate; 4022. Sealing ring; 5. Funnel; 6. Vent hole; 7. Cleaning plate; 8. Wear-resistant ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a medical syringe needle anti-puncture protection device, comprising a needle tube 1, a protective mechanism 2 fixedly connected to the top of the outer wall of the needle tube 1 for protecting the needle, a folding mechanism 3 fixedly connected to the bottom of the outer wall of the protective mechanism 2 for increasing the adaptability of the device, and a connecting mechanism 4 fixedly connected to the bottom of the outer wall of the needle tube 1; the protective mechanism 2 includes a fixing ring 201 fixedly connected to the bottom of the outer wall of the needle tube 1, and a fixing space at the top of the outer wall of the fixing ring 201. A folding plate 202 has a protective shell 203 fixedly connected to the top of its outer wall. A fixing component 204 is slidably connected to the middle of the inner wall of the protective shell 203. The fixing component 204 includes a clamping tube 2041, which is slidably connected to the middle of the inner wall of the protective shell 203. Fixing rods 2042 are rotatably connected to the bottom of the clamping tube 2041 around its perimeter. Spring plates 2043 are rotatably connected to the middle of the inner walls of the multiple fixing rods 2042. A spring 2044 is fixedly connected to an adjacent side of the outer wall of the fixing rod 2042. Specifically, the protective shell 203 is connected to the needle tube 1 and the folding plate 202 to ensure that it slides along the axial direction of the needle tube 1. Made of flexible material, the protective shell 203 can be folded upwards when not in use to reduce space occupation, and unfolded when in use to provide sufficient protective length. It slides onto the outside of the needle tube 1, and automatic protection is achieved through the elastic reset of the folding plate 202. The fixed ring 201 is connected to the tubing 302 to provide a stable fulcrum, allowing the protective shell 203 to be adjusted within a certain angle range to adapt to different injection scenarios. It limits the maximum bending angle of the tubing 302 to ensure stable position after folding. Fixed to the bottom of the needle tube 1, it serves as the supporting base for the positioning component 402, distributed circumferentially along the base 401 to enhance structural rigidity and prevent device swaying. The protective shell 203 encloses the needle tube 1. The needle is locked by the fixing component 204 to ensure safe transportation and storage. Holding the syringe body with one hand, the thumb presses the top of the protective shell 203, causing the protective shell 203 to slide down, exposing the needle. The spring plate 2043 opens, and the fixing rod 2042 unlocks. Adjusting the angle of the folding mechanism 3 completes the injection operation. Releasing the thumb causes the protective shell 203 to move upward automatically, and the fixing rod 2042 tightens under the action of the spring 2044, locking the needle tube 1 and forming an irreversible lock. Once locked, the needle cannot be exposed again. It is reset immediately after use, reducing the risk of needle stick injuries to medical personnel. The folding mechanism 3 allows the protective shell 203 to be adjusted in angle, suitable for different types of injection operations. The mechanical locking of the fixing component 204 and the sealing combination of the connecting mechanism 4 ensure reliable protection.

[0019] Reference Figure 1 , Figure 2 and Figure 5 The folding mechanism 3 includes a flange 301, which is fixedly connected to the bottom of the outer wall of the fixing ring 201. A hose 302 is fixedly connected to the bottom of the outer wall of the flange 301. A fixing cylinder 303 is fixedly connected to the middle of the inner wall of the hose 302. A support assembly 304 is slidably connected to the outer wall of the flange 301. The support assembly 304 includes a connecting rod 3041, which is slidably connected to the outer wall of the flange 301. Nuts 3042 are threaded to the upper and lower ends of the outer wall of the connecting rod 3041. A nut 3043 is threaded to the middle of the outer wall of the connecting rod 3041. Multiple springs 3045 are fixedly connected to the middle of the inner wall of the flange 301. A clamping plate 3044 is fixedly connected to the adjacent side of the outer wall of the multiple springs 3045. Specifically, flange 301 is rigidly connected to the main equipment via fixing ring 201, while bottom hose 302 provides a flexible connection to accommodate installation errors or equipment vibration. Connecting rod 3041 slides along guide rail to limit the bending angle of hose 302 and prevent damage. Nut 3042 locks the position of connecting rod 3041 and adjusts the flexibility range of folding mechanism 3. Nut 3043 is threaded with connecting rod 3041 to provide damping effect, absorb vibration energy, and reduce impact on hose 302. Spring 3045 enhances structural stability and maintains clamping force through clamping plate 3044. When hose 302 bends, spring maintains constraint. After reaching the target position, nut 3042 fixes connecting rod 3041, and nut 3043 and spring together fix the structure.

[0020] Reference Figure 1 , Figure 2 and Figure 3 The connecting mechanism 4 includes a base 401, which is fixedly connected to the bottom of the outer wall of the needle tube 1. Positioning components 402 are fixedly connected to all four sides of the outer wall of the base 401. Positioning components 402 include a support plate 4021, which is fixedly connected to all four sides of the outer wall of the base 401. A sealing ring 4022 is fixedly connected to the bottom of the outer wall of the base 401. An exhaust hole 6 is opened at the top of the outer wall of the protective shell 203. A funnel 5 is fixedly connected to the middle of the outer wall of the protective shell 203. A wear-resistant ring 8 is fixedly connected to the bottom of the outer wall of the protective shell 203. A cleaning plate 7 is fixedly connected to the bottom of the outer wall of the folding plate 202. Specifically, the base 401 of the connecting mechanism 4 is fixed to the bottom of the outer wall of the needle tube 1, and the positioning components 402 around it are stably supported by the support plate 4021. The sealing ring 4022 at the bottom of the base 401 ensures a seal. The exhaust hole 6 at the top of the protective shell 203 is used for gas discharge. The funnel 5 in the middle facilitates material injection. The wear-resistant ring 8 at the bottom enhances durability. The cleaning plate 7 at the bottom of the folding plate 202 can achieve a cleaning function during movement. The whole system achieves a stable connection between the needle tube 1 and the protective shell 203 and a cleaning function for the needle tube 1 through the cooperation of various components.

[0021] Working principle: As a basic support, it connects the needle tube 1 and the folding plate 202, ensuring that the protective shell 203 slides along the axial direction of the needle tube 1. Made of flexible material, the protective shell 203 can be folded upwards when not in use, reducing space occupation; when in use, it unfolds to provide sufficient protective length. The rigid plastic shell slides onto the outside of the needle tube 1. Automatic protection is achieved through the elastic return of the folding plate 202, which slides with the protective shell 203. The fixing rod 2042 at its bottom opens and closes via a spring plate 2043, causing the clamping tube 2041 to move downwards. When the spring 2043 is extended, the fixing rod 2042 rotates outward, the spring 2043 rebounds, and the fixing rod 2042 tightens inward under the action of the spring 2044, locking the groove of the syringe 1, locking the position of the protective shell 203, connecting the fixing ring 201 and the tubing 302, providing a stable fulcrum, allowing the protective shell 203 to be adjusted within a certain angle range to adapt to different injection scenarios, limiting the maximum bending angle of the tubing 302, preventing excessive bending from causing structural failure, and holding the tubing 302 tightly by the clamping plate 3044 to ensure folding. The needle is then positioned stably and fixed at the bottom of the syringe 1, serving as a support base for the positioning component 402. Distributed circumferentially along the base 401, it enhances structural rigidity and prevents the device from shaking. It forms a seal upon contact with the syringe body to prevent leakage of the medication. The protective shell 203 encloses the needle, and the fixing component 204 locks it in place, ensuring safe transport and storage. Holding the syringe body with one hand and pressing the top of the protective shell 203 with the thumb causes it to slide down, exposing the needle. The spring plate 2043 opens, unlocking the fixing rod 2042 and allowing adjustment of the angle of the folding mechanism 3. After completing the injection, release the thumb. The protective shell 203 automatically moves upward under the elastic action of the folding plate 202 and the tubing 302. The fixing rod 2042 tightens under the action of the spring 2044, locking the needle tube 1. After locking, the needle cannot be exposed again. No additional operation is required. It is reset immediately after use, reducing the risk of medical staff being pricked. The folding mechanism 3 allows the protective shell 203 to adjust its angle, which is suitable for different types of injection operations. The mechanical locking of the fixing component 204 and the sealing design of the connecting mechanism 4 are combined to ensure the reliability of protection. Flange 301 is connected to needle tube 1 via retaining ring 201. The flexible hose 302 at its bottom provides flexible connection capability, allowing for a certain range of angular offset or axial expansion and contraction to accommodate installation errors or equipment vibration. Connecting rod 3041 slides along a guide rail on the outer periphery of flange 301, limiting the maximum bending angle of hose 302 and preventing damage from excessive bending. The position of connecting rod 3041 is locked by upper and lower nuts 3042. The flexibility range of the folding mechanism 3 can be adjusted as needed. Tightening the nuts 3042 limits the sliding stroke and enhances rigidity; loosening them allows for greater bending. Nut 3043 is threaded onto connecting rod 3041, reducing stress on the hose. The impact of 302 causes spring 2 3045 to compress the clamping plate 3044 concentrically, making it hold the hose 302 or the internal fixing cylinder 303 tightly, enhancing structural stability and preventing the hose 302 from loosening or falling off under pressure fluctuations, maintaining continuous clamping force. When the equipment needs to adjust the angle, the hose 302 bends, causing the connecting rod 3041 to slide along the flange 301. Spring 2 3045 keeps the hose 302 fixed through the clamping plate 3044. After reaching the target position, tighten the nut 3042 to fix the connecting rod 3041. The frictional damping between the nut 3043 and the connecting rod 3041, as well as the spring clamping the needle tube 1, increase the structural adaptability and robustness.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A medical syringe needle anti-puncture protection device, comprising a needle tube (1), characterized in that: The top of the outer wall of the needle tube (1) is fixedly connected to a protective mechanism (2), which is used to protect the needle tip. The bottom of the outer wall of the protective mechanism (2) is fixedly connected to a folding mechanism (3), which is used to increase the adaptability of the device. The bottom of the outer wall of the needle tube (1) is fixedly connected to a connecting mechanism (4). The protective mechanism (2) includes a fixing ring (201), which is fixedly connected to the bottom of the outer wall of the needle tube (1). A folding plate (202) is fixedly spaced at the top of the outer wall of the fixing ring (201). A protective shell (203) is fixedly connected to the top of the outer wall of the folding plate (202). A fixing component (204) is slidably connected to the middle of the inner wall of the protective shell (203).

2. The medical syringe needle anti-puncture protection device according to claim 1, characterized in that: The fixing component (204) includes a clamping tube (2041), which is slidably connected to the middle of the inner wall of the protective shell (203). Fixing rods (2042) are rotatably connected to the bottom of the clamping tube (2041). Spring plates (2043) are rotatably connected to the middle of the inner wall of the plurality of fixing rods (2042). A spring (2044) is fixedly connected to an adjacent side of the outer wall of the fixing rod (2042).

3. The medical syringe needle anti-puncture protection device according to claim 1, characterized in that: The folding mechanism (3) includes a flange (301), which is fixedly connected to the bottom of the outer wall of the fixing ring (201). A hose (302) is fixedly connected to the bottom of the outer wall of the flange (301). A fixing cylinder (303) is fixedly connected to the middle of the inner wall of the hose (302). A support assembly (304) is slidably connected around the outer wall of the flange (301).

4. The medical syringe needle anti-puncture protection device according to claim 3, characterized in that: The support assembly (304) includes a connecting rod (3041), which is slidably connected to the outer wall of the flange (301). Nuts (3042) are threaded to the upper and lower ends of the outer wall of the connecting rod (3041), and nuts (3043) are threaded to the middle of the outer wall of the connecting rod (3041). Multiple springs (3045) are fixedly connected to the middle of the inner wall of the flange (301), and clamping plates (3044) are fixedly connected to adjacent sides of the outer walls of the multiple springs (3045).

5. The medical syringe needle anti-puncture protection device according to claim 1, characterized in that: The connecting mechanism (4) includes a base (401), which is fixedly connected to the bottom of the outer wall of the needle tube (1), and positioning components (402) are fixedly connected to all four sides of the outer wall of the base (401).

6. The medical syringe needle anti-puncture protection device according to claim 5, characterized in that: The positioning component (402) includes a support plate (4021), which is fixedly connected to the outer wall of the base (401) around the perimeter, and a sealing ring (4022) is fixedly connected to the bottom of the outer wall of the base (401).

7. The medical syringe needle anti-puncture protection device according to claim 1, characterized in that: The protective shell (203) has an exhaust hole (6) at the top of its outer wall, and a funnel (5) is fixedly connected to the middle of its outer wall.

8. The medical syringe needle anti-puncture protection device according to claim 1, characterized in that: A wear-resistant ring (8) is fixedly connected to the bottom of the outer wall of the protective shell (203), and a cleaning plate (7) is fixedly connected to the bottom of the outer wall of the folding plate (202).

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