An insulin pen cap

Abstract

This invention addresses the problem that existing insulin pen caps only assist in needle removal and lack a storage mechanism, easily leading to exposed needles and potential biosafety hazards. It provides an insulin pen cap that integrates needle removal, storage, and replacement. The pen cap includes a top cover, a cap tube, a locking device, a one-way locking device, and a guide tube. The cap tube features a sealed transparent observation window and a medical rubber partition for separating and storing new and used needles. The locking device includes a universal ring, a pull ring, and a locking block. The one-way locking device features an inverted triangular locking block and a return spring, enabling unidirectional needle movement. This pen cap allows for contactless needle removal and replacement, and serves as a sealed container for discarded needles, completely eliminating the risk of needle exposure and ensuring biosafety throughout the entire process.

Description

Technical Field

[0001] This invention relates to the field of insulin pen technology, and more particularly to an insulin pen cap. Background Technology

[0002] Currently, while commercially available insulin pen caps (such as those with authorization notice number CN 221713155 U) offer a solution for easy needle removal, their structure remains limited to auxiliary removal tools. In practical use, this existing technology has the following shortcomings:

[0003] First, it lacks a storage mechanism. It cannot immediately store old needles after disassembly, and users still need to find a special sharps box, which greatly reduces its convenience.

[0004] Secondly, there are serious biosafety risks. Because old needles cannot be stored, the disassembled needles are often exposed. When the pen cap is discarded as ordinary waste, the exposed needles can easily pierce through the garbage bag and injure subsequent contacts (such as sanitation workers), increasing the risk of bloodborne disease transmission.

[0005] Therefore, this invention aims to provide an integrated solution that constructs an insulin pen cap as a miniature toolbox that integrates disassembly, storage, and replacement. This invention not only enables contactless disassembly of old needles and replacement with new needles, but more importantly, throughout its lifespan as a pen cap, it also serves as a sealed container for discarded needles, ensuring safety throughout the entire chain from user to waste disposal and eliminating the risk of needle pricks.

[0006] Therefore, the present invention provides an insulin pen cap that can store old needles and replace new needles, and can easily disassemble old needles, so as to replace new needles without touching the needles with the hands. Summary of the Invention

[0007] The purpose of this invention is to provide an insulin pen cap that can store old needles and replace them with new needles, and that allows for easy removal of old needles, enabling replacement of new needles without touching the needles with the hand.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0009] This invention provides an insulin pen cap, comprising a pen cap and a pen body for use in conjunction with it;

[0010] The pen cap includes a top cover, a cap tube connected by threads below the top cover, a needle assembly inside the cap tube, an integrally formed locking device below the cap tube for locking the needle assembly, a one-way locking device integrally formed below the locking device, and a guide tube integrally formed below the one-way locking device.

[0011] The top of the pen body is equipped with a needle assembly, which has a four-sided groove structure. The needle assembly can be stored inside the pen cap. The old needle is below the partition plate, and the new needle is above the partition plate.

[0012] Furthermore, the cap tube has a long strip-shaped observation window on its side wall. The observation window is made of sealed and transparent acrylic material. Inside the cap tube is an isolation plate made of medical rubber material. Inside the cap tube is a guide groove for the isolation plate.

[0013] Furthermore, the locking device has symmetrical universal rings at both ends, pull rings on the universal rings, and a locking block at the end of the universal ring away from the pull ring.

[0014] Furthermore, the one-way locking device has symmetrical one-way locking blocks at both ends. The one-way locking blocks have an inverted triangular structure, which allows the needle assembly to move only upward in one direction. A return spring is provided at the rear of the one-way locking block. The return spring can keep the one-way locking block in an inward locking state. When the old needle moves upward, its inverted triangular structure will push the one-way locking block open at both ends. When the old needle is fully pushed up, the one-way locking block will return to its original position under the action of the return spring.

[0015] The beneficial effects of this invention are:

[0016] 1) Addressing the pain points of existing technologies and eliminating biosafety hazards: This invention integrates an insulin pen cap with a miniature sharps container. Disassembled old needles can be directly and sealed inside the cap, avoiding the risk of needle sticking caused by exposed needles. From user operation to waste disposal, the entire chain blocks the transmission path of bloodborne diseases, ensuring the safety of sanitation workers and other subsequent contacts.

[0017] 2) Improve ease of use and simplify operation: No need to find a special sharps box, realize the integrated operation of contactless disassembly of old needles and instant replacement of new needles; the cap is equipped with a sealed transparent observation window, which can directly see the quantity and status of new and old needles. The medical rubber isolation plate and guide groove not only separate the new and old needles to avoid contamination, but also ensure the stability of storage. No complicated tools are required for operation, which is suitable for daily use scenarios.

[0018] 3) Reliable structural design and strong adaptability: The locking device, through the cooperation of the universal ring, pull ring and locking block, can securely lock the needle assembly and is easy to operate; the combination of the inverted triangular locking block and the return spring of the one-way locking device ensures that the old needle can only be stored upwards in one direction and cannot be retracted, with strong sealing performance; the four-sided groove structure of the pen body needle assembly is well adapted to the pen cap guide tube and locking device, and the overall one-piece molding design takes into account both structural strength and safety of use, and is adapted to the use needs of existing insulin pens.

[0019] 4) Optimize storage rationality and avoid cross-contamination: The medical rubber isolation plate inside the cap physically separates the new and old needles. Combined with the airtight storage structure, it effectively avoids cross-contamination between the new and old needles. At the same time, the one-way locking mechanism ensures that the old needles will not loosen or fall off after storage, further improving the reliability of use and storage.

[0020] This invention provides an insulin pen cap that can store old needles and replace them with new needles, and allows for easy removal of old needles, enabling replacement without touching the needles with the hand. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the assembly structure of an insulin pen cap and pen body according to the present invention;

[0022] Figure 2 This is a schematic diagram of an insulin pen cap according to the present invention;

[0023] Figure 3 This is a schematic diagram of the cap and tube structure of an insulin pen according to the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of an insulin pen cap according to the present invention;

[0025] Figure 5 This is a schematic diagram of the assembly structure of the pen body, locking device, one-way locking device, and guide cylinder of the present invention.

[0026] Figure 6 This is a schematic diagram of the assembly structure of the pen body, one-way locking device, and guide cylinder of the present invention;

[0027] Figure 7 This is a schematic diagram of the pen body structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the assembly structure of the locking device, one-way locking device and guide cylinder of the present invention;

[0029] Figure 9 This is a schematic diagram showing the disassembled structure of the locking device, one-way locking device, and guide cylinder of the present invention;

[0030] Figure 10 This is a schematic diagram of the bottom structure of the guide cylinder of the present invention.

[0031] In the diagram: 1. Pen cap, 11. Top cover, 12. Cap tube, 121. Observation window, 122. Isolation plate, 13. Locking device, 131. Pull ring, 132. Universal ring, 133. Locking block, 14. One-way locking device, 141. One-way locking block, 142. Return spring, 15. Guide tube, 2. Pen body, 21. Needle assembly, 211. Old needle, 212. New needle. Detailed Implementation

[0032] This invention provides an insulin pen cap that can store old needles and replace them with new needles, and allows for easy removal of old needles, enabling replacement without touching the needles with the hand.

[0033] The technical solutions provided by the present invention will be described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0034] An insulin pen cap includes a pen cap 1 and a pen body 2 for use;

[0035] The pen cap 1 includes a top cover 11 for opening and closing the pen cap 1. Below the top cover 11 is a cap tube 12 connected by threads. The cap tube 12 contains a needle assembly 21. Below the cap tube 12 is an integrally formed locking device 13 for locking the needle assembly 21. Below the locking device 13 is a one-way locking device 14 integrally formed with the locking device 13. The one-way locking device 14 is used to one-way lock the needle assembly 21, so that the old needle 211 can only be put into the pen cap 1 and cannot be taken out for reuse. Below the one-way locking device 14 is a guide tube 15 integrally formed with the one-way locking device 14. The guide tube 15 is wider at the bottom and narrower at the top, and the guide path is conical, which facilitates the user to accurately guide the old needle (211) when putting it into the pen cap 1.

[0036] The top of the pen body 2 is provided with a needle assembly 21, which has a four-sided groove structure. The locking block 133 on the locking device 13 can lock the four-sided groove. The needle assembly 21 can be stored in the pen cap 1. The old needle 211 is below the isolation plate 122, and the new needle 212 is above the isolation plate 122.

[0037] The cap 12 has a long strip-shaped observation window on its side wall. The observation window 121 is made of sealed transparent acrylic material, which makes it easy to observe the number of needle components 21 inside the pen cap 1. The cap 12 has an isolation plate 122 inside, which is made of medical rubber material, thereby separating and sealing the upper and lower parts of the pen cap 1 to prevent cross-infection. The cap 12 has a guide groove for the isolation plate 122 inside, so that the isolation plate 122 can move precisely upward along the guide groove without deviation.

[0038] The locking device 13 has symmetrical universal rings 132 at both ends, and pull rings 131 are provided on the universal rings 132. A locking block 133 is provided at the end of the universal ring 132 away from the pull ring 131. A spring is provided behind the locking block 133 to keep the locking block in an inward locking state.

[0039] The one-way locking device 14 has symmetrical one-way locking blocks 141 at both ends. The one-way locking blocks 141 have an inverted triangular structure, which allows the needle assembly 21 to move only upward in one direction. The rear of the one-way locking block 141 is provided with a return spring 142. The return spring 142 can keep the one-way locking block 142 in an inward locking state. When the old needle 211 moves upward, its inverted triangular structure will push the one-way locking block 141 open at both ends. When the old needle 211 is fully pushed up, the one-way locking block 141 will return to its original position under the action of the return spring 142.

[0040] When using the insulin pen, the user first takes out an insulin pen and then opens the cap with one hand. Inside the cap are new needles, arranged with the needle tips pointing downwards and the pen tails upwards. The user holds the insulin pen in one hand and the cap in the other, then presses the tip of the pen into the cap and rotates it to thread the new needles onto the pen. The user then opens the protective cover on the needle with one hand and begins injection. After injection, the user holds the cap in one hand and uses their index finger and... Pull the two pull rings outward with your thumb to unlock the locking block. Then, use your other hand to press the needle assembly of the insulin pen into the lower part of the pen cap. Under the action of the one-way locking device, the needle assembly cannot be pulled out, thus preventing the needle from being reused. Then, the user can release the pull rings with their thumb and forefinger to re-lock the locking block. The locking block will then lock the recessed part of the needle assembly. The user can then rotate the insulin pen body to separate the pen body from the needle assembly. When the user needs to use the insulin pen again, simply repeat the above operation.

[0041] This invention provides an insulin pen cap that can store old needles and replace them with new needles, and allows for easy removal of old needles, enabling replacement without touching the needles with the hand.

[0042] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An insulin pen cap, comprising a pen cap (1) and a pen body (2) for use; The pen cap (1) includes a top cover (11) at the top, and a cap tube (12) connected by threads is provided below the top cover (11). The cap tube (12) contains a needle assembly (21). A locking device (13) is integrally formed below the cap tube (12). The locking device (13) is used to lock the needle assembly (21). A one-way locking device (14) integrally formed with the locking device (13) is provided below the locking device (13). A guide tube (15) integrally formed with the one-way locking device (14) is provided below the one-way locking device (14). The top of the pen body (2) is provided with a needle assembly (21). The needle assembly (21) has a four-sided groove structure. The needle assembly (21) can be stored in the pen cap (1). The old needle (211) is below the partition plate (122), and the new needle (212) is above the partition plate (122).

2. The insulin pen cap according to claim 1, characterized in that, The cap tube (12) has a long strip-shaped observation window (121) on its side wall. The observation window (121) is made of sealed transparent acrylic material. The cap tube (12) has an isolation plate (122) inside. The isolation plate (122) is made of medical rubber material. The cap tube (12) has a guide groove for the isolation plate (122) inside.

3. The insulin pen cap according to claim 1, characterized in that, The locking device (13) has symmetrical universal rings (132) at both ends, and pull rings (131) are provided on the universal rings (132). A locking block (133) is provided at the end of the universal ring (132) away from the pull ring (131).

4. The insulin pen cap according to claim 1, characterized in that, The one-way locking device (14) has symmetrical one-way locking blocks (141) at both ends. The one-way locking blocks (141) have an inverted triangular structure, which allows the needle assembly (21) to move only upward in one direction. The rear of the one-way locking block (141) is provided with a return spring (142). The return spring (142) can keep the one-way locking block (142) in an inward locking state. When the old needle (211) moves upward, its inverted triangular structure will push the one-way locking block (141) open to both ends. When the old needle (211) is fully pushed up, the one-way locking block (141) will be reset under the action of the return spring (142).

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