Folding insulin needle
By designing a foldable insulin needle, the safety hazard of exposed needles after use is solved by using a rotating folding bar and spring-loaded locking mechanism to bend and hide the needle, thus improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIHAI KARMADE MEDICAL TECH CO LTD
- Filing Date
- 2025-04-01
- Publication Date
- 2026-07-14
AI Technical Summary
When insulin needles are discarded directly after use, the needles can easily prick sanitation workers, posing a safety hazard.
Design a foldable insulin needle that bends the needle tip and hides it in a storage slot by rotating a folding strip, and uses a spring and locking mechanism to fix the needle tip in place, ensuring that it cannot move.
This effectively eliminates safety hazards and avoids accidental injuries caused by exposed needles.
Smart Images

Figure CN224484631U_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of insulin needle technology, specifically a foldable insulin needle. Background Technology
[0002] Insulin injections are commonly used medical devices for diabetic patients. They consist of a needle and an insulin injector or insulin pen, allowing for precise insulin injection to help patients control their blood sugar. Insulin injections come with different needle sizes, and attention must be paid to sterilization, correct injection site, and dosage control when using them.
[0003] In the current technology, some patients use insulin injections on their own. If they are thrown directly into the trash can after use, sanitation workers are easily pricked by the needles and infected when cleaning up the trash, which poses a safety hazard. Summary of the Invention
[0004] The purpose of this invention is to provide a foldable insulin needle, which allows the needle tip to be bent and hidden by rotating the folding strip after use, thereby eliminating safety hazards.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a foldable insulin needle is provided, including a syringe barrel. Two baffles are fixedly connected to the lower surface of the syringe barrel. A fixed shaft is fixedly connected between adjacent baffles. A folding strip is movably installed on the outer surface of the fixed shaft. A storage groove is provided on the side wall of the folding strip. A fixed block is fixedly connected to the side wall of the folding strip. A positioning groove is provided on the outer surface of the fixed block. A second limiting groove is provided on the lower surface of the syringe barrel. A first spring groove is provided on the inner surface of the second limiting groove. A first spring is fixedly connected to the inner wall of the first spring groove. A locking block is fixedly connected to one end of the first spring.
[0006] Optionally, the outer surface of the syringe is provided with a first groove, and the folded strip is located inside the first groove.
[0007] Optionally, a second spring groove is formed on the inner wall of the first groove, a second spring is fixedly connected to the inner wall of the second spring groove, and a moving block is fixedly connected to one end of the second spring.
[0008] Optionally, the inner wall of the first groove is provided with a second groove, the movable block is located inside the second groove, and the inner wall of the storage groove is provided with a first limiting groove, the number of which is two.
[0009] Optionally, the inner wall of the second spring groove is provided with a toggle groove, and a toggle block is fixedly connected to the outer surface of the moving block, the toggle block being located inside the toggle groove.
[0010] Optionally, the inner surface of the syringe is provided with a threaded groove, and a needle is fixedly connected to the lower surface of the syringe.
[0011] Optionally, the outer surface of the syringe is provided with anti-slip grooves, and the number of anti-slip grooves is multiple.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] This utility model includes a syringe, a fixed shaft, a folding strip, a storage groove, a fixed block, a positioning groove, a first spring, a locking block, a needle, and a second limiting groove. After the syringe is used, the folding strip rotates around the fixed shaft until the fixed block is located in the second limiting groove. During the rotation, the storage groove squeezes the needle, causing the needle to bend to a horizontal position as the folding strip moves. At this time, the needle is completely inside the storage groove. As the fixed block moves into the second limiting groove, the outer surface of the fixed block squeezes the inclined surface of the locking block, causing the locking block to move to the left, thereby compressing the first spring. When the fixed block is completely inside the second limiting groove, the first spring rebounds, causing the locking block to move to the right into the positioning groove. At this time, the fixed block is fixed, preventing the folding strip from moving and bending and hiding the needle to eliminate safety hazards.
[0014] This utility model includes a folding strip, a lever, a moving block, a first limiting groove, a second spring groove, a second spring, and a first recess. When the folding strip needs to be rotated, the lever is turned counterclockwise, causing the moving block to rotate counterclockwise, thereby disengaging the moving block from the first limiting groove, allowing the folding strip to rotate. When the folding strip needs to be folded up, the lever is turned counterclockwise, causing the moving block to fully enter the second spring groove. The second spring contracts, thus rotating the folding strip into the first recess. Releasing the lever causes the second spring to rebound, causing the moving block to rotate clockwise, allowing the moving block to pass through the first limiting groove. At this point, the folding strip is limited and cannot move. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a first-view overall structural diagram of the present invention;
[0017] Figure 2 This is a partial cross-sectional view of the present invention.
[0018] Figure 3 This utility model Figure 2Enlarged structural diagram at point A;
[0019] Figure 4 This is a partial cross-sectional view of the needle tip of this utility model in a bent state;
[0020] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B;
[0021] Figure 6 This is a schematic diagram of the structure of the folding strip of this utility model;
[0022] Figure 7 This is a schematic diagram of the structure of the fixed shaft of this utility model;
[0023] Figure 8 This is a schematic diagram of the overall structure of the present invention from a second perspective.
[0024] In the diagram: 1. Syringe; 2. Baffle; 3. Fixed shaft; 4. Folding strip; 5. Storage groove; 6. Fixed block; 7. Positioning groove; 8. First spring groove; 9. First spring; 10. Locking block; 11. First groove; 12. Second spring groove; 13. Second spring; 14. Moving block; 15. Second groove; 16. First limiting groove; 17. Actuating groove; 18. Actuating block; 19. Threaded groove; 20. Anti-slip groove; 21. Needle; 22. Second limiting groove. Detailed Implementation
[0025] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0029] Reference Figure 1-8 The present invention will now be described. A foldable insulin needle includes a syringe 1. Two baffles 2 are fixedly connected to the lower surface of the syringe 1. A fixed shaft 3 is fixedly connected between adjacent baffles 2. A folding strip 4 is movably mounted on the outer surface of the fixed shaft 3. A storage groove 5 is formed on the side wall of the folding strip 4. A fixed block 6 is fixedly connected to the side wall of the folding strip 4. A positioning groove 7 is formed on the outer surface of the fixed block 6. A second limiting groove 22 is formed on the lower surface of the syringe 1. A first spring groove 8 is formed on the inner surface of the second limiting groove 22. A first spring 9 is fixedly connected to the inner wall of the first spring groove 8. A locking block 10 is fixedly connected to one end of the first spring 9. After the syringe 1 is used, the folding strip 4 is rotated around the fixed shaft 3 until the fixed block 6 is located in the second limiting groove 22. During the rotation process... The storage groove 5 will squeeze the needle 21, causing it to bend to a horizontal position as the folding strip 4 moves. At this time, the needle 21 is completely inside the storage groove 5. As the fixing block 6 moves into the second limiting groove 22, the outer surface of the fixing block 6 will squeeze the inclined surface of the locking block 10, causing the locking block 10 to move to the left, thereby compressing the first spring 9. When the fixing block 6 is completely in the second limiting groove 22, the first spring 9 rebounds, causing the locking block 10 to move to the right into the positioning groove 7. At this time, the fixing block 6 is fixed, so that the folding strip 4 cannot move, and the needle 21 is bent and hidden to eliminate safety hazards. The outer surface of the syringe 1 is provided with a first groove 11, and the folding strip 4 is located inside the first groove 11. The first groove 11 is used to place the folding strip 4.
[0030] The present invention provides a foldable insulin needle, which, compared with the prior art, allows the needle tip 21 to be bent and hidden by rotating the folding strip 4 after the syringe 1 has been used, thereby eliminating safety hazards.
[0031] Please refer to another embodiment of this utility model as well. Figures 1 to 6 and Figure 8The inner wall of the first groove 11 has a second spring groove 12, and a second spring 13 is fixedly connected to the inner wall of the second spring groove 12. One end of the second spring 13 is fixedly connected to a moving block 14. The inner wall of the first groove 11 has a second groove 15, and the moving block 14 is located inside the second groove 15. The inner wall of the storage groove 5 has a first limiting groove 16, and there are two first limiting grooves 16. The inner wall of the second spring groove 12 has a toggle groove 17, and a toggle block 18 is fixedly connected to the outer surface of the moving block 14. When it is necessary to rotate the folding strip 4, the toggle block 18 is turned counterclockwise. The movable block 14 rotates counterclockwise, causing it to disengage from the first limiting groove 16, thus allowing the folding strip 4 to rotate. When the folding strip 4 needs to be folded up, the lever 18 is turned counterclockwise, causing the movable block 14 to fully enter the second spring groove 12. The second spring 13 contracts, thus rotating the folding strip 4 into the first groove 11. The lever 18 is released, and the second spring 13 rebounds, causing the movable block 14 to rotate clockwise, thus allowing the movable block 14 to pass through the first limiting groove 16. At this time, the folding strip 4 is limited and cannot move, and the lever 18 is located inside the lever groove 17.
[0032] In another embodiment of this utility model, please refer to Figures 1 to 4 and Figure 8 The inner surface of the syringe 1 is provided with a threaded groove 19, which is to facilitate the connection between the syringe 1 and the syringe. The needle 21 is fixedly connected to the lower surface of the syringe 1. The outer surface of the syringe 1 is provided with an anti-slip groove 20, which makes it easier to screw the syringe 1 onto the syringe and prevents slippage. There are multiple anti-slip grooves 20.
[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 foldable insulin needle, comprising a syringe (1), characterized in that: The lower surface of the syringe (1) is fixedly connected to a baffle (2), and there are two baffles (2). A fixed shaft (3) is fixedly connected between adjacent baffles (2). A folding strip (4) is movably installed on the outer surface of the fixed shaft (3). A storage groove (5) is opened on the side wall of the folding strip (4). A fixed block (6) is fixedly connected to the side wall of the folding strip (4). A positioning groove (7) is opened on the outer surface of the fixed block (6). A second limiting groove (22) is opened on the lower surface of the syringe (1). A first spring groove (8) is opened on the inner surface of the second limiting groove (22). A first spring (9) is fixedly connected to the inner wall of the first spring groove (8). A locking block (10) is fixedly connected to one end of the first spring (9).
2. The foldable insulin needle as described in claim 1, characterized in that: The outer surface of the syringe (1) is provided with a first groove (11), and the folding strip (4) is located inside the first groove (11).
3. The foldable insulin needle as described in claim 2, characterized in that: The inner wall of the first groove (11) is provided with a second spring groove (12), and a second spring (13) is fixedly connected to the inner wall of the second spring groove (12). A moving block (14) is fixedly connected to one end of the second spring (13).
4. The foldable insulin needle as described in claim 3, characterized in that: The inner wall of the first groove (11) is provided with a second groove (15), the moving block (14) is located inside the second groove (15), and the inner wall of the storage groove (5) is provided with a first limiting groove (16), and there are two first limiting grooves (16).
5. The foldable insulin needle as described in claim 3, characterized in that: The inner wall of the second spring groove (12) is provided with a toggle groove (17), and a toggle block (18) is fixedly connected to the outer surface of the moving block (14), and the toggle block (18) is located inside the toggle groove (17).
6. The foldable insulin needle as described in claim 1, characterized in that: The inner surface of the syringe (1) is provided with a threaded groove (19), and a needle (21) is fixedly connected to the lower surface of the syringe (1).
7. The foldable insulin needle as described in claim 1, characterized in that: The outer surface of the syringe (1) is provided with anti-slip grooves (20), and there are multiple anti-slip grooves (20).