Insulin injection pen capable of avoiding needle puncture
By designing an automatically closed protective shell structure and a simple needle replacement mechanism on the insulin injection pen, the problems of needle punctures and pen cap loss in traditional injection pens are solved, and a safe and convenient injection process is achieved.
Patent Information
- Application Number
- CN202422040086.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-08-22
AI Technical Summary
Traditional insulin injection pens can easily injure users when changing needles or injecting, and the exposed needle poses a risk of puncture, and the pen cap is easy to lose, making it inconvenient to use.
A needle holder structure with a first protective shell and a second protective shell is designed. The needle is automatically closed through a pull ring and spring mechanism. Combined with the card strip and wedge block mechanism of the pen cap, it ensures that the needle remains closed when not in use. The needle can be replaced by twisting the needle holder. The design is simple and safe.
It effectively prevents needle stick injuries, maintains needle closure, simplifies the replacement process, avoids pen cap loss, and improves safety and convenience of use.
Smart Images
Figure CN223380907U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of insulin injection pens, in particular to an insulin injection pen capable of avoiding needle puncture injuries. Background Art
[0002] In the medical field, insulin pens are an indispensable tool in the daily management of diabetic patients. Their safety and convenience are crucial to patients' treatment outcomes and quality of life. However, traditional insulin pens have some obvious safety hazards during use, especially the risk of needle stick injuries.
[0003] The insulin injection pen that can avoid needle stick injuries still has the following defects when in use: the traditional insulin injection pen is easy to injure the injector when replacing the needle or injecting the patient, and the replaced needle cannot be sealed, so that the exposed needle may inadvertently cause punctures to others, and the pen cap of the injection pen is easy to be lost after the injection. Utility Model Content
[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to provide an insulin injection pen that can avoid needle stick injuries.
[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an insulin injection pen capable of avoiding needle stick injuries, comprising an injection pen body and a pen cap, wherein the injection pen body is threadedly connected to a needle seat, the needle seat is fixedly connected to a connecting block, the connecting block is rotatably connected to a first protective shell, the first protective shell is fixedly connected to a spring 1, one end of the spring 1 is fixedly connected to the needle seat, the first protective shell is fixedly connected to a fixing block, the fixing block is fixedly connected to a bracket, the bracket is slidably connected to a sliding column, and one end of the sliding column is fixedly connected to There is a pull ring, the other end of the sliding column is fixedly connected to the first wedge block, the first wedge block is slidably connected to the fixed block, the first wedge block is fixedly connected to the spring 2, one end of the spring 2 is fixedly connected to the bracket, the connecting block is rotatably connected to the second protective shell, the second protective shell is fixedly connected to the spring 3, one end of the spring 3 is fixedly connected to the needle seat, the spring 3 is fixedly connected to the card column, one end of the card column is affixed to the first wedge block, and the second protective shell is provided with a limit block, one end of the limit block is affixed to the first protective shell.
[0006] As a further description of the above technical solution: a slide groove 1 is provided on the pen cap, a cylinder is slidably connected to the slide groove 1, a connecting rod is rotatably connected to the cylinder, and one end of the connecting rod is rotatably connected to the injection pen body.
[0007] As a further description of the above technical solution: a through slot is provided on the pen cap, a shell is fixedly connected to the pen cap, a second wedge block is slidably connected to the shell, a spring four is fixedly connected to the second wedge block, one end of the spring four is fixedly connected to the shell, a clip is fixedly connected to the second wedge block, the clip is slidably connected to the shell, the clip is slidably connected to the through slot, a fixing plate is provided on the injection pen body, and the fixing plate is attached to the second wedge block.
[0008] As a further description of the above technical solution: the sliding column passes through the bracket, and the first wedge block passes through the fixed block.
[0009] As a further description of the above technical solution: the fixing blocks are provided in two groups, and the first wedge blocks are provided in two groups.
[0010] As a further description of the above technical solution: the first protective shell and the second protective shell are symmetrically arranged, and the needle seat is provided with a needle and the needle is arranged between the first protective shell and the second protective shell.
[0011] As a further description of the above technical solution: the clamping strip passes through the shell, the second wedge block passes through the shell, and the spring four is arranged in the shell.
[0012] The utility model has the following beneficial effects:
[0013] 1. In the present invention, when using an insulin injection pen that can avoid needle stick injuries, when injecting or replacing the needle, the first protective shell and the second protective shell can be opened and closed by pulling the pull ring and the spring, effectively covering the needle and preventing the needle from being exposed, greatly reducing the risk of puncture injuries caused by accidental contact by medical staff, patients or other people. The design of replacing the needle by twisting the needle seat makes the replacement process simple and quick, while maintaining the closedness of the needle, ensuring the hygiene and safety of the injection.
[0014] 2. In the present invention, when using an insulin injection pen that can avoid needle stick injuries, the pen cap can be easily pulled out and fixed to one side by pulling the clip, thereby avoiding the loss of the pen cap and reducing the time and physical effort wasted in searching for the pen cap. The mechanism of the spring four and the second wedge block ensures that the pen cap is tightly combined with the injection pen body, providing a simple and safe way to fix and protect the pen cap. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the structure of an insulin injection pen that can avoid needle stick injuries proposed by the utility model Figure 1 ;
[0016] Figure 2This is a schematic diagram of the structure of an insulin injection pen that can avoid needle stick injuries proposed by the utility model Figure 2 ;
[0017] Figure 3 This is a cross-section of an insulin injection pen that can avoid needle stick injuries proposed by the utility model Figure 1 ;
[0018] Figure 4 This is a cross-section of an insulin injection pen that can avoid needle stick injuries proposed by the utility model Figure 2 ;
[0019] Figure 5 This is a schematic diagram of the internal structure of an insulin injection pen proposed by the present invention that can avoid needle stick injuries;
[0020] Figure 6 for Figure 3 Enlarged view of point A in the middle;
[0021] Figure 7 for Figure 5 Enlarged view of point B in the middle;
[0022] Figure 8 for Figure 1 Enlarged view of point C in the middle.
[0023] Legend:
[0024] 1. Injection pen body; 2. Needle holder; 3. Connecting block; 4. First protective shell; 5. Spring 1; 6. Fixed block; 7. Bracket; 8. Sliding column; 9. Pull ring; 10. First wedge block; 11. Spring 2; 12. Second protective shell; 13. Spring 3; 14. Clamping column; 15. Limiting block; 16. Pen cap; 17. Slide groove 1; 18. Cylinder; 19. Connecting rod; 20. Through groove; 21. Shell; 22. Second wedge block; 23. Spring 4; 24. Clamping strip; 25. Fixed plate. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0026] Reference Figures 1-8The utility model provides an embodiment of an insulin injection pen that can avoid needle stick injuries, including an injection pen body 1 and a pen cap 16. The injection pen body 1 is threadedly connected to a needle seat 2, the needle seat 2 is fixedly connected to a connecting block 3, the connecting block 3 is rotatably connected to a first protective shell 4, the first protective shell 4 is fixedly connected to a spring 1 5, one end of the spring 1 5 is fixedly connected to the needle seat 2, the first protective shell 4 is fixedly connected to a fixing block 6, the fixing block 6 is fixedly connected to a bracket 7, a sliding column 8 is slidably connected to the bracket 7, one end of the sliding column 8 is fixedly connected to a pull ring 9, the other end of the sliding column 8 is fixedly connected to a first wedge block 10, the first wedge block 10 is slidably connected to the fixing block 6, the first wedge block 10 is fixedly connected to a spring 2 11, one end of the spring 2 11 is fixedly connected to the bracket 7, and the connecting block 3 is rotatably connected to a second spring 11. Protective shell 12, the second protective shell 12 is fixedly connected with spring three 13, one end of spring three 13 is fixedly connected to the needle seat 2, and a clamping column 14 is fixedly connected to the spring three 13, one end of the clamping column 14 is fitted on the first wedge block 10, and a limit block 15 is provided on the second protective shell 12, one end of the limit block 15 is fitted on the first protective shell 4. When using an insulin injection pen that can avoid needle sticks, when injecting or replacing the needle, the first protective shell 4 and the second protective shell 12 can be opened and closed by pulling the pull ring 9 and the spring, effectively covering the needle to prevent the needle from being exposed, greatly reducing the risk of punctures caused by accidental contact by medical staff, patients or other people. The design of replacing the needle by twisting the needle seat 2 makes the replacement process simple and quick, while maintaining the closedness of the needle, ensuring the hygiene and safety of the injection.
[0027] The pen cap 16 is provided with a slide groove 17, and a cylinder 18 is slidably connected to the slide groove 17. The cylinder 18 is rotatably connected to a connecting rod 19. One end of the connecting rod 19 is rotatably connected to the injection pen body 1. The pen cap 16 is provided with a through groove 20. The pen cap 16 is fixedly connected to a housing 21. A second wedge block 22 is slidably connected to the housing 21. A spring four 23 is fixedly connected to the second wedge block 22. One end of the spring four 23 is fixedly connected to the housing 21. A clip 24 is fixedly connected to the second wedge block 22. The clip 24 is slidably connected to the housing 21. The clip 24 is slidably connected to the through groove 20. A fixing plate 25 is provided on the injection pen body 1. The fixing plate 25 is fitted to the second wedge block 22. The sliding column 8 passes through the bracket 7. The first wedge block 10 passes through the fixing block 6. There are two groups of fixing blocks 6, two groups of first wedge blocks 10, the first protective shell 4 and the second protective shell 12 are symmetrically arranged, a needle is provided on the needle seat 2 and the needle is arranged between the first protective shell 4 and the second protective shell 12, the card strip 24 passes through the shell 21, the second wedge block 22 passes through the shell 21, and the spring four 23 is arranged in the shell 21. When using an insulin injection pen that can avoid needle sticks, by pulling the card strip 24, the pen cap 16 can be easily pulled out and fixed to one side, avoiding the loss of the pen cap 16 and reducing the time and physical effort wasted in searching for the pen cap 16. The mechanism of the spring four 23 and the second wedge block 22 ensures that the pen cap 16 is tightly combined with the injection pen body 1, providing a simple and safe way to fix and protect the pen cap 16.
[0028] Working principle: When using the insulin injection pen that can avoid needle stick injuries, the staff first pulls the clamping strip 24 to slide on the through groove 20. The clamping strip 24 drives the second wedge block 22 to slide in the shell 21 and compresses the spring four 23 at the same time. When the second wedge block 22 leaves the fixing plate 25, the pen cap 16 is pulled to one side. The pen cap 16 causes the cylinder 18 to slide on the slide groove 17. After the pen cap 16 is pulled out, the connecting rod 19 is rotated on the injection pen body 1 to move the pen cap 16 to one side, thereby preventing the pen cap 16 from being separated from the injection pen body 1 and lost, avoiding a lot of time and physical effort being wasted in the subsequent search. After the injection is completed, the pen cap 16 is pressed back onto the injection pen body 1. The action of the second wedge block 22 drives the spring four 23 to be compressed, so that the fixing plate 25 is re-attached to the second wedge block 22 to complete the fixation of the pen cap 16, thereby preventing contaminants from contaminating the insulin solution and reducing the risk of infection at the injection site. When injecting, only two sets of pulls need to be pulled. The ring 9 and the pull ring 9 drive the sliding column 8 to slide on the bracket 7, and the sliding column 8 drives the first wedge block 10 to slide on the fixed block 6 and compresses the spring 2 11 at the same time. When the two groups of first wedge blocks 10 leave the engagement with the clamping column 14, the first protective shell 4 and the second protective shell 12 are driven to rotate and open on the connecting block 3 by the pulling action of the spring 1 5 and the spring 3 13, and then insulin can be injected through the injection pen body 1. After the injection is completed, the clamping column 14 on the second protective shell 12 is reset and clamped on the two groups of first wedge blocks 10, and then the needle seat 2 is twisted to replace the needle. It is suitable for effectively preventing the needle from being exposed when not in use during injection or needle replacement, thereby greatly reducing the risk of puncture caused by accidental contact by medical staff, patients or other people. The replaced needle is always sealed by the first protective shell 4 and the second protective shell 12. For subsequent injections, the new needle seat 2 can be connected to the injection pen body 1 through a threaded connection.
[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An insulin injection pen capable of preventing needle stick injuries, comprising an injection pen body (1) and a pen cap (16), characterized in that: The injection pen body (1) is threadedly connected to a needle seat (2), the needle seat (2) is fixedly connected to a connecting block (3), the connecting block (3) is rotatably connected to a first protective shell (4), the first protective shell (4) is fixedly connected to a spring (5), one end of the spring (5) is fixedly connected to the needle seat (2), the first protective shell (4) is fixedly connected to a fixing block (6), the fixing block (6) is fixedly connected to a bracket (7), the bracket (7) is slidably connected to a sliding column (8), one end of the sliding column (8) is fixedly connected to a pull ring (9), the other end of the sliding column (8) is fixedly connected to a first wedge block (10), the first wedge block (10 ) is slidably connected to the fixed block (6), the first wedge block (10) is fixedly connected to a spring 2 (11), one end of the spring 2 (11) is fixedly connected to the bracket (7), the connecting block (3) is rotatably connected to a second protective shell (12), the second protective shell (12) is fixedly connected to a spring 3 (13), one end of the spring 3 (13) is fixedly connected to the needle seat (2), the spring 3 (13) is fixedly connected to a clamping column (14), one end of the clamping column (14) is attached to the first wedge block (10), the second protective shell (12) is provided with a limit block (15), one end of the limit block (15) is attached to the first protective shell (4).
2. The insulin injection pen capable of avoiding needle stick injuries according to claim 1, characterized in that: The pen cap (16) is provided with a slide groove (17), the slide groove (17) is slidably connected to a cylinder (18), the cylinder (18) is rotatably connected to a connecting rod (19), and one end of the connecting rod (19) is rotatably connected to the injection pen body (1).
3. The insulin injection pen capable of avoiding needle stick injuries according to claim 2, characterized in that: The pen cap (16) is provided with a through slot (20), the pen cap (16) is fixedly connected to a housing (21), a second wedge block (22) is slidably connected to the housing (21), a spring four (23) is fixedly connected to the second wedge block (22), one end of the spring four (23) is fixedly connected to the housing (21), a clamping strip (24) is fixedly connected to the second wedge block (22), the clamping strip (24) is slidably connected to the housing (21), and the clamping strip (24) is slidably connected to the through slot (20), and a fixing plate (25) is provided on the injection pen body (1), and the fixing plate (25) is attached to the second wedge block (22).
4. The insulin injection pen capable of avoiding needle stick injuries according to claim 3, characterized in that: The sliding column (8) passes through the bracket (7), and the first wedge block (10) passes through the fixed block (6).
5. The insulin injection pen capable of avoiding needle stick injuries according to claim 4, characterized in that: The fixed blocks (6) are provided in two groups, and the first wedge blocks (10) are provided in two groups.
6. The insulin injection pen capable of avoiding needle stick injuries according to claim 5, characterized in that: The first protective shell (4) and the second protective shell (12) are symmetrically arranged, and a needle is provided on the needle seat (2), and the needle is arranged between the first protective shell (4) and the second protective shell (12).
7. The insulin injection pen capable of avoiding needle stick injuries according to claim 6, characterized in that: The clamping strip (24) passes through the housing (21), the second wedge block (22) passes through the housing (21), and the spring four (23) is arranged in the housing (21).