Insulin pen capable of preventing needle stick injury

Abstract

The utility model relates to an insulin pen capable of preventing pricking injury. The insulin pen comprises a needle head and a needle cylinder, an annular circular truncated cone is arranged at the lower end of the needle head, and a clamping tenon is arranged on the edge of the circular truncated cone; a cylindrical connecting device is arranged at the end of the needle cylinder, a limiting hole is formed in the connecting device, and a springback device is arranged in the connecting device. The lower end of the needle head is arranged in the cylindrical connecting device in a sleeving manner; and the lower end of the needle head is clamped in the limiting hole of the cylindrical connecting device through a tenon. When the needle head is installed, the end opening, provided with the circular truncated cone, of the needle head is aligned with and inserted into the end, provided with the connecting device, of the needle head, so that the clamping tenon can enter the limiting hole, the needle head and the needle cylinder can be fixed, and a user conducts subcutaneous injection through the device to feed insulin into the body; when the needle head is detached, the needle head can be detached only by pressing the needle head towards the needle cylinder and rotating the needle head towards the two sides. When the device is used, the dismounting is obviously very simple, the safety is high, and the situations that the needle head stabs a user and needs to be screwed by hands are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and specifically relates to an insulin pen that prevents needle prick injuries. Background Technology

[0002] An insulin pen is an injection tool specifically designed for diabetic patients. It is primarily used for insulin therapy, delivering insulin into the body via subcutaneous injection to control blood sugar levels. Insulin pens offer advantages such as precise dosage, ease of use, self-injection, and convenient portability and storage. The small needle also reduces injection pain, making them particularly suitable for home self-injection by diabetic patients. However, traditional insulin pens require a needle inserted into a syringe. Removing the needle can easily cause needle pricks, and the process requires hand unscrewing, which is difficult when the user's hands are wet.

[0003] Therefore, in view of the problems in the existing technology that the needle can easily cause needle pricks to users when disassembling the needle, and that disassembly requires manual twisting, which is not easy to operate when the user's hands are wet, there is a need to provide an insulin pen that prevents needle pricks. Utility Model Content

[0004] This invention provides an insulin pen designed to prevent needle pricks, addressing the issue that needle pricks can easily occur when disassembling the needle, and that disassembly requires manual twisting, which is difficult to perform when the user's hands are wet.

[0005] This utility model is achieved through the following technical solution: it includes a needle and a syringe; the lower end of the needle is provided with a frustum, and the edge of the frustum is provided with a locking tenon;

[0006] The end of the syringe is provided with a cylindrical connecting device, the connecting device is provided with a limiting hole, and the connecting device is provided with a spring-loaded device.

[0007] The lower end of the needle is fitted inside the cylindrical connecting device;

[0008] The lower end of the needle is engaged with the limiting hole of the cylindrical connecting device by a latch.

[0009] To better realize this utility model, further optimization is made to the above structure. The connecting device is provided with a cylindrical cavity, and the bottom of the cylindrical cavity is provided with an annular limiting plate.

[0010] To better realize this utility model, the above structure is further optimized, and the rebound device is a first spring.

[0011] To better realize this utility model, further optimizations are made to the above structure. The frustum is provided with a central through hole, the side wall of the frustum is provided with a countersunk hole pointing to the center, and the bottom of the countersunk hole is provided with a protruding post.

[0012] To better realize this utility model, the above structure is further optimized. A second spring is provided between the tenon and the protrusion. One end of the second spring is sleeved on the protrusion, and the other end of the second spring is fixedly connected to the tenon.

[0013] To better realize this utility model, the above structure is further optimized by making one end of the tenon a ramp.

[0014] To better realize this utility model, the above structure is further optimized, and the inclined surface of the ramp faces the direction of the syringe.

[0015] To better realize this utility model, the above structure is further optimized by fixing the other end of the latch to the other end of the second spring.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] An insulin pen designed to prevent needle pricks includes a needle and a syringe. The lower end of the needle has a frustum, and the edge of the frustum has a locking tenon. The end of the syringe has a cylindrical connecting device with a limiting hole and a spring-loaded mechanism. The lower end of the needle is fitted inside the cylindrical connecting device and secured to the limiting hole of the cylindrical connecting device by the locking tenon. When installing the needle, simply align the frustum-shaped end of the needle with the end of the syringe with the connecting device, allowing the locking tenon to enter the limiting hole, thus fixing the needle to the syringe. The user can then administer insulin subcutaneously through this device. When removing the needle, simply press the needle towards the syringe and rotate it to the sides. Pressing the needle causes the locking tenon in the limiting hole to move towards the syringe and disengage from the limiting hole. Rotating it to the sides ensures that the locking tenon will not re-enter the limiting hole during removal, preventing the needle from becoming stuck. The device is obviously very easy to disassemble, highly safe, and avoids the risk of needle pricks and the need for manual twisting. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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.

[0019] Figure 1 This is a front view of the needle-puncture-proof insulin pen of this utility model;

[0020] Figure 2 This is an exploded view of the needle and connecting device in this utility model;

[0021] Figure 3 This is a cross-sectional view of the frustum of a cone in this utility model;

[0022] Figure 4 This is a longitudinal sectional view of the connecting device in this utility model;

[0023] Figure 5 This is a cross-sectional view of the inclined platform in this utility model.

[0024] In the picture:

[0025] 1-Needle; 2-Syringe; 3-Connecting device; 4-Limiting hole; 5-First spring; 6-Clamping tenon; 7-Frustum; 8-Protruding post; 9-Counterhead; 10-Second spring; 11-Sloping platform. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Example 1:

[0030] An insulin pen designed to prevent needle pricks, such as Figure 1 As shown, it includes: a needle 1 and a syringe 2; the lower end of the needle 1 is provided with an annular truncated cone 7, and the edge of the truncated cone 7 is provided with a tenon 6.

[0031] The end of the syringe 2 is provided with a cylindrical connecting device 3, the connecting device is provided with a limiting hole 4, and the connecting device is provided with a spring-loaded device.

[0032] The lower end of the needle 1 is fitted inside the cylindrical connecting device 3.

[0033] The lower end of the needle 1 is engaged in the limiting hole 4 of the cylindrical connecting device 3 by means of a latch 6.

[0034] The above structure features a frustum 7 at the lower end of the needle 1, with a locking tenon 6 at its edge. A connecting device is located at the end of the syringe 2, with a limiting hole 4 and a spring-loaded mechanism. To install the needle 1, simply align the end of the needle 1 with the frustum 7 and insert it into the end of the syringe 2 with the connecting device, allowing the locking tenon 6 to enter the limiting hole 4. This secures the needle 1 to the syringe 2, allowing the user to administer insulin subcutaneously. To remove the needle 1, simply press it towards the syringe 2 and rotate it to the sides. Pressing the needle 1 causes the locking tenon 6 in the limiting hole 4 to move towards the syringe 2 and disengage. Rotating it to the sides ensures that the locking tenon 6 will not re-enter the limiting hole 4 during removal, preventing the needle 1 from becoming stuck. This device offers obvious ease of disassembly, high safety, and avoids needle puncture injuries and the need for manual unscrewing.

[0035] like Figure 2 and Figure 3 As shown, the connecting device has a cylindrical cavity, and an annular limiting plate is provided at the bottom of the cylindrical cavity. One end of the connecting device is connected to the needle 1, and the other end is connected to the syringe 2. The cylindrical cavity of the connecting device allows the frustum 7 of the needle 1 to move within it, and the connecting device is sealed to the syringe 2 and the needle 1, ensuring that no leakage occurs when injecting liquid. The annular limiting plate limits the position of the first spring 5 in the cylindrical cavity. Preferably, the end of the syringe 2 is the connecting device, that is, the connecting device is integrated into the syringe 2.

[0036] The aforementioned rebound device is the first spring 5. Through the first spring 5, when the needle 1 is pressed, causing the latch 6 on the frustum 7 to disengage or enter the limiting hole 4, the needle 1 has a rebound force, making pressing convenient.

[0037] like Figure 4As shown, the aforementioned frustum 7 has a central through hole, and the aforementioned side wall has a countersunk hole 9 pointing towards the center. A protruding post 8 is provided at the bottom of the countersunk hole 9. That is, a hollow annular frustum 7 is provided at the end of the needle 1. A protruding post 8 is fixedly provided on the inner annular wall near the needle 1, and a countersunk hole 9 is opened on the outer annular wall away from the needle 1. The size of the countersunk hole 9 is the same as that of the latch 6. Preferably, a rubber ring is provided at the edge of the frustum 7 to ensure a tight seal when the needle 1 is installed into the connecting device, preventing insulin leakage during injection.

[0038] The aforementioned latch 6 is connected to the aforementioned protrusion 8 via a second spring 10. One end of the second spring 10 is sleeved inside the aforementioned protrusion 8, and the other end of the second spring 10 is fixedly connected to the aforementioned latch 6. The protrusion 8 has a cavity, allowing the second spring 10 to be fixedly sleeved inside the protrusion 8. By providing the second spring 10, when the latch 6 moves radially along the frustum 7 during the removal of the needle 1, there is a rebound force, preventing the latch 6 from falling directly into the frustum 7 and rendering the device unusable.

[0039] The aforementioned protruding post 8 and countersunk hole 9 are correspondingly arranged. That is, the protruding post 8 and countersunk hole 9 are on the same straight line, which also makes the second spring 10 and the latch 6 on the same diameter of the frustum 7.

[0040] One end of the aforementioned tenon 6 is a ramp 11.

[0041] The inclined surface of the aforementioned ramp 11 faces the direction of the syringe 2. That is, when the needle 1 is pressed, the latch 6 moves towards the direction of the syringe 2, and the ramp 11 of the latch 6 slides into the frustum 7 along the limiting hole 4. If the inclined surface of the ramp 11 faces the direction of the needle 1, the needle 1 needs to be pulled out by hand to remove it, which makes the operation troublesome.

[0042] The other end of the aforementioned latch 6 is fixedly connected to the other end of the second spring 10.

[0043] Specifically, by setting a latch 6 at the lower end of the needle 1, setting a limiting hole 4 on the connecting device, and setting a spring-loaded device inside the connecting device, the needle 1 can be installed or removed by pressing it. This makes the operation of the anti-needle-puncture insulin pen very simple for the user, avoids the situation where the needle 1 punctures the user, and improves the safety of using the insulin pen.

[0044] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An insulin pen designed to prevent needle pricks, characterized in that: Includes a needle (1) and a syringe (2); the lower end of the needle (1) is provided with a frustum (7), and the edge of the frustum (7) is provided with a tenon (6); The end of the syringe (2) is provided with a cylindrical connecting device (3), the connecting device (3) is provided with a limiting hole (4), and the connecting device (3) is provided with a spring-loaded device; The lower end of the needle (1) is fitted inside the cylindrical connecting device (3); The lower end of the needle (1) is engaged in the limiting hole (4) of the cylindrical connecting device (3) by a tenon (6); The frustum (7) is provided with a central through hole, and the side wall of the frustum (7) is provided with a countersunk hole (9) pointing to the center of the circle, and the bottom of the countersunk hole (9) is provided with a protruding post (8). A second spring (10) is provided between the latch (6) and the protrusion (8). One end of the second spring (10) is sleeved on the protrusion (8), and the other end of the second spring (10) is fixedly connected to the latch (6). One end of the tenon (6) is a ramp (11); The inclined surface of the ramp (11) faces the syringe (2); The other end of the latch (6) is fixedly connected to the other end of the second spring (10).

2. The insulin pen for preventing needlestick injuries according to claim 1, characterized in that: The connecting device (3) has a cylindrical cavity inside, and the bottom of the cylindrical cavity has an annular limiting plate.

3. The insulin pen for preventing needlestick injuries according to claim 1, characterized in that: The rebound device is a first spring (5).

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