Anti-stick injury type insulin needle

Abstract

The utility model discloses a kind of anti-puncture insulin needle heads, including needle cylinder, anti-puncture needle cover and needle cap. Needle cylinder is open-ended hollow cylinder, and is detachably connected with insulin injection pen end part, and its top inner wall is fixed needle core, and needle core two ends are located in cylinder inside and outside respectively. Anti-puncture needle cover is also open-ended hollow cylinder, and is slidably sleeved in needle cylinder needle core one end by connecting structure, and the top inner wall is provided with extension hole for needle core to pass through. Needle cap is detachably connected with anti-puncture needle cover top by clamping structure. When using, sliding anti-puncture needle cover can prevent needle core from being exposed after injection, reduce the risk of being punctured when medical staff handles needle head, reduce the possibility of blood-borne disease infection, and ensure occupational health and safety. The needle head overall structure is simple, with low manufacturing cost, conducive to promotion, effectively solve the deficiency of existing needle head device in injection post-processing and anti-puncture.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and more specifically, to a puncture-resistant insulin needle. Background Technology

[0002] Current injection devices generally include a needle cap, needle, and syringe. During injection, due to inadequate needle design, needle quality, and patient movement, the needle is prone to bending. There is also a risk of needlestick injuries, such as accidental injury to fingers, during post-injection needle removal. Needlestick injuries not only injure healthcare workers but can also be a vector for blood-borne diseases like hepatitis B, hepatitis C, and HIV. Research shows that occupational exposure risks in my country are increasing annually, with insulin needles accounting for a particularly high percentage of needlestick injuries. While existing needle devices exist, their advantage lies in prioritizing patient comfort over post-injection handling and removal, neglecting needle protection for healthcare workers and significantly increasing the difficulty of handling the needle after injection.

[0003] How to invent a puncture-resistant insulin needle to improve these problems has become an urgent issue for those skilled in the art. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a puncture-proof insulin needle, which aims to improve the existing needle device. Its advantage lies in considering the patient's injection comfort but neglecting the post-injection handling and separation, failing to consider the puncture prevention function for medical staff, and increasing the difficulty of needle handling after injection.

[0005] This invention is achieved as follows: a puncture-resistant insulin needle, comprising...

[0006] A syringe is detachably connected to the end of an insulin pen. The syringe is a hollow cylindrical structure with an opening at the bottom. A needle core is fixedly installed on the inner wall of the top of the syringe, and the two ends of the needle core extend to the inside and outside of the syringe, respectively.

[0007] The anti-puncture needle cover is also a hollow cylindrical structure with an opening at the bottom. The anti-puncture needle cover is slidably sleeved on the end of the syringe where the needle core is located through a connecting structure. An extension hole for the needle core to pass through is opened on the inner wall of the top of the anti-puncture needle cover.

[0008] The needle cap is detachably attached to the top surface of the puncture-proof needle cover via a snap-fit ​​structure.

[0009] In a preferred embodiment of this invention, the inner wall of the syringe near the bottom opening is provided with a threaded groove for connecting to an insulin pen.

[0010] In a preferred embodiment of this invention, a sealing film is provided on the surface of the bottom opening of the syringe.

[0011] In a preferred embodiment of this utility model, the connecting structure includes a plurality of connecting grooves evenly distributed in a ring on the circumferential surface of the syringe and a plurality of connecting sliders evenly distributed in a ring on the inner wall of the anti-puncture needle cover, each of the connecting sliders being slidably connected in the corresponding connecting groove.

[0012] In a preferred embodiment of this utility model, each of the connecting slide grooves has a limiting groove connected to the same side at both ends, and each of the connecting sliders has a protruding limiting block at one end facing the corresponding limiting groove. The overall width of the end of each connecting slider with the limiting block is consistent with the width of the connecting slide groove.

[0013] In a preferred embodiment of this utility model, two symmetrically distributed wings are integrally provided on the top of the outer walls on both sides of the anti-puncture needle cover.

[0014] In a preferred embodiment of this utility model, the diameters at both ends of the extension hole are conical structures with smaller diameters at the top and larger diameters at the bottom.

[0015] In a preferred embodiment of this utility model, the snap-fit ​​structure includes an annular snap-fit ​​protrusion on the inner edge of the bottom opening of the needle cap and an annular snap-fit ​​groove on the top surface of the anti-puncture needle cover. The needle cap is detachably connected to the anti-puncture needle cover through the annular snap-fit ​​protrusion and the annular snap-fit ​​groove.

[0016] The beneficial effects of this utility model are as follows: The puncture-proof insulin needle obtained by the above design effectively prevents the needle core from being exposed after injection by sliding the puncture-proof cap to the outside of the syringe. This greatly reduces the risk of medical staff being pricked when handling and separating the needle, reduces the possibility of bloodborne disease infection caused by needlestick injury, and protects the occupational health and safety of medical staff. Moreover, the overall structure is simple and the manufacturing cost is low, making it suitable for widespread use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic perspective view of the overall structure separated from the insulin injection pen provided by the embodiment of this utility model;

[0019] Figure 2 A perspective view illustrating the overall structure of this utility model;

[0020] Figure 3 A three-dimensional schematic cross-sectional view of the overall structure provided for the embodiments of this utility model;

[0021] Figure 4 A schematic perspective view of the overall cross-sectional separation structure provided for an embodiment of this utility model;

[0022] Figure 5 A three-dimensional cross-sectional view of the anti-puncture needle cap and needle cap provided for the embodiments of this utility model.

[0023] In the diagram: 1-syringe; 2-puncture-proof needle cap; 3-needle cap; 4-insulin injection pen; 101-needle core; 102-threaded groove; 103-connecting slide; 104-sealing membrane; 201-connecting slider; 202-extension hole; 203-wing; 204-annular groove; 301-annular snap-fit ​​protrusion. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Please see Figures 1 to 5 This utility model provides a technical solution: a puncture-resistant insulin needle, comprising...

[0026] Syringe 1 is detachably connected to the end of insulin pen 4. Syringe 1 is a hollow cylindrical structure with an opening at the bottom. Needle core 101 is fixedly installed on the inner wall of the top of syringe 1. The two ends of needle core 101 extend to the inside and outside of syringe 1, respectively.

[0027] The anti-puncture needle cover 2 is also a hollow cylindrical structure with an opening at the bottom. The anti-puncture needle cover 2 is slidably sleeved on the end of the syringe 1 with the needle core 101 through the connecting structure. An extension hole 202 for the needle core 101 to pass through is opened on the inner wall of the top of the anti-puncture needle cover 2.

[0028] Needle cap 3 is detachably connected to the top surface of anti-puncture needle cover 2 via a snap-fit ​​structure.

[0029] Furthermore, the inner wall of the syringe 1 near the bottom opening has a threaded groove 102 for connecting with the insulin pen 4.

[0030] Before use, the user screws the tip of the insulin pen 4 into the threaded groove 102 at the bottom opening of the syringe 1, rotating it to the appropriate position to ensure a tight connection and form a stable unit. During injection, the friction and engagement force of the threaded connection maintains the relative position of the unit and the insulin pen. Compared to other connection methods, the threaded connection offers better tightness and reliability, allows for repeated disassembly and installation, facilitates needle replacement, and improves the versatility and convenience of the insulin injection device.

[0031] Furthermore, a sealing film 104 is provided on the surface of the bottom opening of the syringe 1.

[0032] The sealing film 104 is tightly fitted to the bottom opening surface of the syringe 1, covering the entire opening area. Before use, the user needs to remove the sealing film 104 and then install the syringe 1 onto the insulin pen 4. The sealing film 104 can be made of materials with good sealing and barrier properties, such as medical plastic film. The sealing film 104 improves the hygiene standards of the insulin needle, reduces the risk of injection infection caused by contaminants entering the syringe 1, extends the shelf life of the insulin needle, and ensures the quality stability of the product during transportation and storage.

[0033] Furthermore, the connection structure includes several connecting grooves 103 evenly distributed in a ring on the circumference of the syringe 1 and several connecting sliders 201 evenly distributed in a ring on the inner wall of the anti-puncture needle cover 2. Each connecting slider 201 is slidably connected in the corresponding connecting groove 103.

[0034] Several connecting sliders 201 are evenly distributed on the inner wall of the anti-puncture needle cover 2 and are correspondingly slidably connected to the connecting grooves 103 on the surface of the syringe 1. Through the cooperation of the connecting sliders 201 and the connecting grooves 103, the anti-puncture needle cover 2 can be independently displaced relative to the syringe 1. After the injection is completed, the anti-puncture needle cover 2 can be slid away from the insulin pen 4 to cover the needle core 101, thereby avoiding the risk of needle core 101 leakage and puncture injury or pollution of the surrounding environment.

[0035] Furthermore, each connecting slide 103 has a limiting groove at both ends that are connected to the same side, and each connecting slider 201 has a protruding limiting block at one end that is connected to the corresponding limiting groove. The overall width of the end of each connecting slider 201 with the limiting block is the same as the width of the connecting slide 103.

[0036] When the anti-puncture needle cover 2 is in two positions, with the needle core 101 in the exposed and retracted states, the limiting block at the end of each connecting slider 201 engages with the corresponding limiting groove at both ends of the connecting slide 103. For example, in the initial state where the needle core 101 is exposed, the limiting block at the end of the connecting slider 201 engages with the limiting groove at the end of the corresponding connecting slide 103 near the insulin pen 4, maintaining the relative fixed position of the syringe 1 and the anti-puncture needle cover 2. When the anti-puncture needle cover 2 needs to be slid to cover the needle core 101 after injection, first rotate the entire anti-puncture needle cover 2 away from the limiting block, and the limiting blocks at the ends of all connecting sliders 201 engage with the corresponding limiting grooves. When the locking slots disengage, the connecting slider 201 and the limiting block are both located in the corresponding connecting groove 103. Since the sum of the widths of the connecting slider 201 and the limiting block is the same as the width of the connecting groove 103, it does not affect their sliding in the connecting groove 103. Then, slide the anti-puncture needle cover 2 away from the insulin pen 4 and rotate it towards the limiting block, so that all the limiting blocks are simultaneously locked in another corresponding limiting groove. By setting the limiting block and the two limiting grooves, the anti-puncture needle cover 2 can be made to slide independently while maintaining relative stability in both positions, avoiding the inconvenience caused by the sliding of the anti-puncture needle cover 2 during use.

[0037] Furthermore, the top of the outer walls on both sides of the anti-puncture needle cover 2 is integrally provided with two symmetrically distributed wings 203.

[0038] After injecting insulin, the user holds the wings 203 on both sides of the anti-puncture cap 2 with one hand to prevent it from rotating, while operating the insulin pen 4 with the other hand. Through lifting up and down and rotating left and right, the anti-puncture cap 2 protects the needle core 101. The shape and size of the wings 203 are ergonomically designed for easy gripping and application of force. The wings 203 improve operability and ease of use, allowing users to perform anti-puncture operations more conveniently, quickly, and accurately, reducing errors caused by operational inconvenience, and further enhancing the effectiveness of the anti-puncture function.

[0039] Furthermore, the extension hole 202 has a conical structure with a smaller diameter at the top and a larger diameter at the bottom at both ends.

[0040] After injection, slide the anti-puncture needle cap 2, and the needle core 101 gradually enters the extension hole 202 until the anti-puncture needle cap 2 slides to the top position. At this point, the needle core 101 is completely covered within the extension hole 202, and the smaller diameter of the upper port provides some restraint to the needle core 101. The conical extension hole structure design improves the fitting accuracy and safety between the anti-puncture needle cap and the needle core, reduces the risk of needle core damage, and also enhances the anti-puncture effect, ensuring that the needle core is effectively protected under various circumstances.

[0041] Furthermore, the snap-fit ​​structure includes an annular snap-fit ​​protrusion 301 on the inner edge of the bottom opening of the needle cap 3 and an annular snap-fit ​​groove 204 on the top surface of the anti-puncture needle cover 2. The needle cap 3 is detachably connected to the anti-puncture needle cover 2 through the annular snap-fit ​​protrusion 301 and the annular snap-fit ​​groove 204.

[0042] During assembly, align the annular snap-fit ​​protrusion 301 at the bottom of the needle cap 3 with the annular snap-fit ​​groove 204 at the top of the anti-puncture needle cover 2, and gently press the needle cap 3 to engage the snap-fit ​​protrusion 301 into the groove 204, thus achieving a secure connection between the needle cap 3 and the anti-puncture needle cover 2. When the insulin needle needs to be used, the user simply pulls the needle cap 3 upwards to remove it from the anti-puncture needle cover 2. The snap-fit ​​structure is simple and practical, providing a secure connection and easy disassembly. It effectively protects the needle core 101 without increasing the complexity of use, ensuring the product's functional requirements at different stages and improving the overall product performance and user experience.

[0043] Working principle: First, remove the sealing film 104 at the bottom of the syringe 1. Screw the end of the insulin pen 4 into the threaded groove 102 at the bottom opening of the syringe 1. Pinch the wing 203 of the anti-puncture needle cover 2 and remove the needle cap 3. Inject insulin. After the injection is completed, pinch the wing 203 with one hand and hold the insulin pen 4 with the other. Rotate the anti-puncture needle cover 2 to make the slider 201 disengage from the limiting groove. Slide the anti-puncture needle cover 2 to let the needle core 101 enter the extension hole 202. Then rotate the anti-puncture needle cover 2 to make the slider 201 lock into another limiting groove. Finally, handle the needle according to the regulations.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A puncture-resistant insulin needle, characterized in that, include A syringe is detachably connected to the end of an insulin pen. The syringe is a hollow cylindrical structure with an opening at the bottom. A needle core is fixedly installed on the inner wall of the top of the syringe, and the two ends of the needle core extend to the inside and outside of the syringe, respectively. The anti-puncture needle cover is also a hollow cylindrical structure with an opening at the bottom. The anti-puncture needle cover is slidably sleeved on the end of the syringe where the needle core is located through a connecting structure. An extension hole for the needle core to pass through is opened on the inner wall of the top of the anti-puncture needle cover. The needle cap is detachably attached to the top surface of the puncture-proof needle cover via a snap-fit ​​structure.

2. The puncture-resistant insulin needle as described in claim 1, characterized in that: The syringe has a threaded groove on the inner wall of the end near the bottom opening for connection with an insulin pen.

3. The puncture-resistant insulin needle as described in claim 1, characterized in that: A sealing film is provided on the surface of the bottom opening of the syringe.

4. The puncture-resistant insulin needle as described in claim 1, characterized in that: The connection structure includes several connecting grooves evenly distributed in a ring on the surface of the syringe and several connecting sliders evenly distributed in a ring on the inner wall of the anti-puncture needle cover. Each connecting slider is slidably connected in the corresponding connecting groove.

5. The puncture-resistant insulin needle as described in claim 4, characterized in that: Each of the connecting slides has a limiting groove at both ends that are connected to the same side. Each of the connecting sliders has a protruding limiting block at one end that faces the corresponding limiting groove. The overall width of the end of each connecting slider with the limiting block is the same as the width of the connecting slide.

6. The puncture-resistant insulin needle as described in claim 1, characterized in that: The top of the outer walls on both sides of the anti-puncture needle cap is integrally provided with two symmetrically distributed wings.

7. The puncture-resistant insulin needle as described in claim 1, characterized in that: The extension hole has a conical shape with a smaller diameter at the top and a larger diameter at the bottom.

8. The puncture-resistant insulin needle as described in claim 1, characterized in that: The snap-fit ​​structure includes an annular snap-fit ​​protrusion on the inner edge of the bottom opening of the needle cap and an annular snap-fit ​​groove on the top surface of the anti-puncture needle cover. The needle cap is detachably connected to the anti-puncture needle cover through the annular snap-fit ​​protrusion and the annular snap-fit ​​groove.

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