Needle unloader for preventing needle stick injury

Abstract

The utility model relates to medical instrument technical field discloses a kind of needle dismounting device of preventing needle stick injury, comprising: injection head, the outer surface of the injection head is provided with lug;Clamping mechanism, the clamping mechanism is arranged at the back of injection head;Wherein, the clamping mechanism includes movement block, the front of the movement block is attached with the back of injection head.This one kind of needle dismounting device of preventing needle stick injury, the hand of medical staff and needle are effectively isolated, since medical staff and needle have no direct contact throughout, fundamentally eliminate the needle stick injury event occurrence caused by bare-handed operation, greatly reduce the professional exposure risk of medical staff, effectively guarantee the health of medical staff, and since the design of clamping mechanism, it can be adapted to most common insulin pen, greatly expand the application range of product, provide unified, convenient solution for different user groups, effectively avoid the trouble brought to user due to product compatibility problem.

Description

Technical Field

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

[0002] Insulin, as the only hormone in the body that can lower blood sugar, plays a vital role in the treatment of diabetes. Exogenous insulin is mainly used for the treatment of diabetes. In the current common insulin injection methods, the needle and needle body of insulin needles are mostly connected by threads. After insulin injection, according to medical standards, the used needle must be removed from the insulin pen and properly disposed of in a medical sharps container. This operation, though seemingly simple, presents numerous problems. Traditionally, common insulin pens are not equipped with a dedicated insulin needle removal device, forcing healthcare workers or patients to remove the needle by hand. However, insulin needles are extremely small and short, making it easy to prick one's fingers during manual removal. As a result, needlestick injuries caused by healthcare workers removing insulin needles by hand are common. This not only increases the risk of occupational exposure for healthcare workers but may also lead to serious infection problems, posing a significant threat to their health. Therefore, improvements are needed. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a needle removal device that prevents needle tip injuries to medical staff.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a needle removal device to prevent needlestick injuries, comprising: An injection head, the outer surface of which is provided with protrusions; A clamping mechanism is disposed on the back of the injection head; The clamping mechanism includes a moving block, the front of which is in contact with the back of the injection head. A first hinge block is fixedly installed on the outer surface of the moving block. A moving rod is hinged inside the first hinge block. A second hinge block is hinged to the other end of the moving rod. A movable block is fixedly installed on the outer surface of the second hinge block. A fixing ring is movably connected to the outer surface of the movable block. A clamping block is fixedly installed at the bottom of the outer surface of the movable block. The clamping block is made of rubber.

[0005] As a preferred embodiment of this utility model, a guide block is fixedly installed inside the injection head, and the guide block adopts an inclined design.

[0006] As a preferred embodiment of this utility model, a shell is fixedly sleeved on the outer surface of the fixing ring, a fixing plate is fixedly installed inside the shell, a round rod is movably sleeved inside the fixing plate, and the front end of the round rod is fixedly connected to the back of the moving block.

[0007] As a preferred embodiment of this utility model, a first spring is fixedly installed on the back of the moving block, and the rear end of the first spring is fixedly connected to the front of the fixing plate.

[0008] As a preferred embodiment of this utility model, a fixing block is fixedly installed at the top of the back of the outer shell, and a paddle is slidably connected inside the fixing block.

[0009] As a preferred embodiment of this utility model, a second spring is fixedly installed at the top of the paddle, and the top of the second spring is fixedly connected to the interior of the fixing block.

[0010] As a preferred embodiment of this utility model, a plug is fixedly installed at the bottom end of the paddle, and the outer surface of the plug is movably connected to the inside of the bottom end of the fixed block.

[0011] As a preferred embodiment of this utility model, the bottom end of the insert block is movably connected to a top block, the front side of the top block is fixedly connected to the rear end of the round rod, and a slot is provided on the top block.

[0012] As a preferred embodiment of this utility model, a hanging ring is provided at the bottom of the outer shell, and the hanging ring is connected to the outer shell by bolts.

[0013] As a preferred embodiment of this utility model, the outer surface of the outer shell is provided with anti-slip strips, which are made of rubber.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This needle removal device effectively isolates medical staff's hands from the needle. Since there is no direct contact between medical staff and the needle throughout the process, it fundamentally eliminates needlestick injuries caused by bare-hand operation, greatly reducing the occupational exposure risk of medical staff and effectively protecting their health. Furthermore, due to the clamping mechanism design, it can be adapted to most common insulin pens, greatly expanding the product's applicability and providing a unified and convenient solution for different user groups, effectively avoiding the troubles caused by product compatibility issues.

[0015] 2. This needle removal device, designed to prevent needlestick injuries, significantly simplifies the operation process compared to traditional methods. Traditional methods require manual rotation and disassembly, followed by manual collection or disposal of the needle, a cumbersome process. This device features an automatic ejection function for the injection head. When removing the needle, medical staff only need to move a lever to automatically eject the injection head from the inside of the retaining ring, allowing it to fall into the sharps container or trash can. This significantly saves operation time and is particularly suitable for scenarios requiring frequent insulin injections and needle removal, effectively reducing the operational burden on medical staff and patients and improving overall work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the moving block of this utility model; Figure 5 This is a cross-sectional view of the fixing block of this utility model; Figure 6 This is a schematic diagram of the structure of the injection head of this utility model.

[0017] In the diagram: 1. Injection head; 2. Protrusion; 3. Moving block; 4. First hinge block; 5. Moving rod; 6. Second hinge block; 7. Movable block; 8. Fixing ring; 9. Clamping block; 10. Guide block; 11. Outer shell; 12. Fixing plate; 13. Round rod; 14. First spring; 15. Fixing block; 16. Paddle; 17. Second spring; 18. Insertion block; 19. Top block; 20. Slot; 21. Hanging ring; 22. Bolt; 23. Anti-slip strip. Detailed Implementation

[0018] 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.

[0019] like Figures 1 to 6 As shown, this utility model provides a needle removal device to prevent needlestick injuries, comprising: Injection head 1, with protrusions 2 provided on the outer surface of injection head 1; A clamping mechanism is provided on the back of the injection head 1; The clamping mechanism includes a moving block 3, the front of which is in contact with the back of the injection head 1. A first hinge block 4 is fixedly installed on the outer surface of the moving block 3. A moving rod 5 is hinged inside the first hinge block 4. A second hinge block 6 is hinged to the other end of the moving rod 5. A movable block 7 is fixedly installed on the outer surface of the second hinge block 6. A fixing ring 8 is movably connected to the outer surface of the movable block 7. A clamping block 9 is fixedly installed at the bottom of the outer surface of the movable block 7. The clamping block 9 is made of rubber.

[0020] When the injection head 1 contacts and squeezes the moving block 3, the moving block 3 will simultaneously drive the four first hinge blocks 4 to move backward. At this time, the four first hinge blocks 4 will drive the four second hinge blocks 6 to move through the four moving rods 5. Then, the four second hinge blocks 6 will drive the four movable blocks 7 to move inward along the inside of the fixed ring 8. At this time, the four clamping blocks 9 will move inward under the drive of the four movable blocks 7. When the four clamping blocks 9 contact the injection head 1 during their inward movement, they will clamp and fix the injection head 1. At this time, the fixed ring 8 will rotate as a whole, which will be able to unscrew the injection head 1 from the insulin pen. Throughout the process, the medical staff will not have direct contact with the needle, so as to prevent the needle tip from pricking the medical staff. Due to the design of the clamping blocks 9 and the protrusions 2, the friction between the clamping blocks 9 and the injection head 1 can be guaranteed to prevent slippage when the clamping blocks 9 drive the injection head 1 to rotate.

[0021] The injection head 1 has a guide block 10 fixedly installed inside, and the guide block 10 adopts an inclined design.

[0022] Due to the design of the guide block 10, it can play a good guiding role for the injection head 1, allowing medical staff to easily place the injection head 1 in the center inside the fixing ring 8.

[0023] The outer surface of the fixing ring 8 is fixedly fitted with a shell 11, the inside of the shell 11 is fixedly installed with a fixing plate 12, and the inside of the fixing plate 12 is movably fitted with a round rod 13, the front end of the round rod 13 is fixedly connected to the back of the moving block 3.

[0024] When medical staff twist the outer shell 11, it will cause the fixing ring 8 to rotate as a whole. When the moving block 3 moves, it will cause the round rod 13 to move backward along the inside of the fixing plate 12. Due to the limitation of the fixing plate 12 on the round rod 13, the round rod 13 will move backward along the inside of the fixing plate 12 under the action of the moving block 3.

[0025] The first spring 14 is fixedly installed on the back of the moving block 3, and the rear end of the first spring 14 is fixedly connected to the front of the fixing plate 12.

[0026] When the moving block 3 moves backward, it will compress the first spring 14. Due to the elastic force of the first spring 14, it will have a good restoring effect on the overall movement of the moving block 3.

[0027] A fixing block 15 is fixedly installed at the top of the back of the outer casing 11, and a paddle 16 is slidably connected inside the fixing block 15.

[0028] Due to the internal design of the fixed block 15, the movement of the paddle 16 is limited, so that the paddle 16 can only move up and down.

[0029] The top of the lever 16 is fixedly mounted with a second spring 17, and the top of the second spring 17 is fixedly connected to the inside of the fixing block 15.

[0030] When the paddle 16 moves upward along the inside of the fixed block 15, it will compress the second spring 17. Due to the design of the second spring 17, it will have a good restoring effect on the movement of the paddle 16.

[0031] Among them, the bottom end of the paddle 16 is fixedly installed with the insert block 18, and the outer surface of the insert block 18 is movably connected with the inside of the bottom end of the fixed block 15.

[0032] Because the insert block 18 and the lever 16 are fixedly connected, the insert block 18 can only move up and down, and the lever 16 and the insert block 18 can move up and down together.

[0033] The bottom end of the insert 18 is movably connected to the top block 19, the front of the top block 19 is fixedly connected to the rear end of the round rod 13, and the top block 19 is provided with a slot 20.

[0034] When the round rod 13 moves backward, it will drive the top block 19 to move backward. At this time, the outer surface of the top block 19 will press and push the insert 18, causing the insert 18 to drive the paddle 16 to move upward along the inside of the fixed block 15. When the bottom end of the insert 18 moves to the top of the slot 20, the top block 19 will release the pressing and pushing action on the insert 18. At this time, the insert 18 will move downward under the elastic force of the second spring 17 to reset. Then, the insert 18 will be inserted into the inside of the slot 20 during the downward movement. At this time, the insert 18 will lock the movement of the top block 19 as a whole.

[0035] The bottom of the outer casing 11 is provided with a hanging ring 21, which is connected to the outer casing 11 by bolts 22.

[0036] The design of the loop 21 allows medical staff to tie a rope inside the loop 21 to prevent loss.

[0037] The outer surface of the outer shell 11 is provided with anti-slip strips 23, which are made of rubber.

[0038] Due to the design of the anti-slip strip 23, the friction of the outer surface of the outer shell 11 will be enhanced, which will make it easier for medical staff to twist the outer shell 11.

[0039] Working principle and usage process of this utility model: When medical staff need to remove the injection head 1 from the insulin pen, they first hold the insulin pen and insert the injection head 1 into the retaining ring 8. Because the guide block 10 has an inclined design, it provides good guidance for the injection head 1, allowing the medical staff to easily place it in the center of the retaining ring 8. When the back of the injection head 1 contacts the front of the moving block 3, the medical staff pushes the insulin pen backward, causing the injection head 1 to press and push the moving block 3. At this time, the moving block 3 simultaneously drives the four first hinge blocks 4 to move. The four first hinge blocks 4 then drive the four second hinge blocks 6 through the four moving rods 5. The four movable blocks 7, driven by the four second hinge blocks 6, move along the inside of the retaining ring 8. Due to the limiting effect of the retaining ring 8 on the movable blocks 7, the four movable blocks 7 will... The four clamping blocks 9 move inward, and their outer surfaces come into contact with the outer surface of the injection head 1 during this inward movement. The clamping blocks 9 then clamp and fix the injection head 1 in place. Next, the medical staff twists the outer shell 11. Due to the design of the anti-slip strip 23, the friction between the outer shell 11 and the medical staff's hand is increased, making it easier for the medical staff to twist the outer shell 11. Then, the outer shell 11 rotates the fixing ring 8 in place. At this time, the four clamping blocks 9 rotate the injection head 1 in place. Due to the design of the protrusion 2, the friction between the clamping blocks 9 and the injection head 1 is increased to prevent slippage when the clamping blocks 9 rotate the injection head 1. Then, the injection head 1 is unscrewed from the insulin pen during rotation. Since the medical staff has no direct contact with the needle tip on the injection head 1 throughout the process, the function of preventing the needle tip on the injection head 1 from pricking the medical staff is achieved.

[0040] Furthermore, during the backward movement of the moving block 3, it will drive the round rod 13 to move. Due to the limitation of the round rod 13 inside the fixed plate 12, the moving block 3 will drive the round rod 13 to move backward along the inside of the fixed plate 12. During this process, the first spring 14 will be compressed. At the same time, the round rod 13 will drive the top block 19 to move backward. Due to the design of the top block 19, when the top block 19 moves backward, it will squeeze and push the insert block 18, causing the insert block 18 to move upward along the inside of the fixed block 15. At this time, the paddle 16 will be on the insert block 18. Driven by the movement, the upper part moves upward along the inside of the fixed block 15. During this process, the second spring 17 will be compressed. When the bottom end of the insert block 18 moves to the slot 20, the top block 19 will release the squeezing and pushing action on the insert block 18. Due to the elastic force of the second spring 17, the second spring 17 will drive the paddle 16 and the insert block 18 to move downward to reset. At this time, the bottom end of the insert block 18 will be inserted into the inside of the top block 19 during the downward movement, thereby locking the overall movement of the top block 19, so that the four clamping blocks 9 can maintain the clamping state of the injection head 1.

[0041] When medical staff need to place the injection head 1 in the sharps box or discard it, they can move the lever 16 upwards, causing the lever 16 to move the insert block 18 upwards. Then, the insert block 18 will release its contact with the inside of the slot 20 during the upward movement. At this time, the insert block 18 will no longer be able to lock the movement of the top block 19. Due to the elastic force of the first spring 14, the moving block 3 will move forward under the action of the first spring 14 to reset. During this process, the four clamping blocks 9 will move outwards to release the clamping effect on the injection head 1. At the same time, when the moving block 3 moves forward, it will push the injection head 1, causing the injection head 1 to move out of the inside of the fixing ring 8, thus realizing the function of conveniently unloading the disassembled injection head 1.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A needle stick injury preventing needle changer, characterized by, Including: Injection head (1), the outer surface of which is provided with protrusions (2); A clamping mechanism is disposed on the back of the injection head (1); The clamping mechanism includes a moving block (3), the front of which is in contact with the back of the injection head (1). A first hinge block (4) is fixedly installed on the outer surface of the moving block (3). A moving rod (5) is hinged inside the first hinge block (4). A second hinge block (6) is hinged at the other end of the moving rod (5). A movable block (7) is fixedly installed on the outer surface of the second hinge block (6). A fixing ring (8) is movably connected to the outer surface of the movable block (7). A clamping block (9) is fixedly installed at the bottom of the outer surface of the movable block (7). The clamping block (9) is made of rubber.

2. The needle removal device for preventing needlestick injuries according to claim 1, characterized in that: The injection head (1) is fixedly installed with a guide block (10), which is designed to be inclined.

3. The needle removal device for preventing needlestick injuries according to claim 1, characterized in that: The outer surface of the fixed ring (8) is fixedly fitted with a shell (11), and a fixed plate (12) is fixedly installed inside the shell (11). A round rod (13) is movably fitted inside the fixed plate (12), and the front end of the round rod (13) is fixedly connected to the back of the moving block (3).

4. A needle removal device for preventing needlestick injuries according to claim 3, characterized in that: A first spring (14) is fixedly installed on the back of the moving block (3), and the rear end of the first spring (14) is fixedly connected to the front of the fixing plate (12).

5. A needle removal device for preventing needlestick injuries according to claim 3, characterized in that: A fixing block (15) is fixedly installed at the top of the back of the outer shell (11), and a paddle (16) is slidably connected inside the fixing block (15).

6. A needle removal device for preventing needlestick injuries according to claim 5, characterized in that: The top of the lever (16) is fixedly mounted with a second spring (17), and the top of the second spring (17) is fixedly connected to the inside of the fixing block (15).

7. A needle removal device for preventing needlestick injuries according to claim 5, characterized in that: The bottom end of the paddle (16) is fixedly installed with a plug (18), and the outer surface of the plug (18) is movably connected to the inside of the bottom end of the fixed block (15).

8. A needle removal device for preventing needlestick injuries according to claim 7, characterized in that: The bottom end of the insert (18) is movably connected to the top block (19), the front of the top block (19) is fixedly connected to the rear end of the round rod (13), and a slot (20) is provided on the top block (19).

9. A needle removal device for preventing needlestick injuries according to claim 3, characterized in that: The bottom end of the outer shell (11) is provided with a hanging ring (21), which is connected to the outer shell (11) by bolts (22).

10. A needle removal device for preventing needlestick injuries according to claim 3, characterized in that: The outer surface of the outer shell (11) is provided with anti-slip strips (23), which are made of rubber.

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