An insulin injection device with a spring-loaded cap structure

Abstract

This utility model relates to the field of insulin injection technology, specifically an insulin injection device with a spring-loaded cap structure. It includes an injection pen, a second threaded sleeve at the bottom of a first threaded sleeve, a needle fitted on the outer wall of the second threaded sleeve, a protective component fitted on the outer wall of the first threaded sleeve, and a sliding groove communicating with an annular groove on the outer wall of the base. A retaining groove is formed at the top of the sliding groove, and the spring-loaded cap is inserted into the annular groove. This insulin injection device with a spring-loaded cap structure allows for real-time monitoring of the injection fluid content by using an injection pen with an observation window. The first threaded sleeve facilitates needle thread installation, and the second threaded sleeve facilitates the installation of the protective component. The spring-loaded cap is inserted into the base by a spring, and with the pull handle engaging the sliding groove, the spring-loaded cap is housed in the annular groove for convenient injection. The spring-loaded cap protects the needle when it pops out, reducing the risk of needle puncture injury to medical personnel.

Description

Technical Field

[0001] This utility model relates to the field of insulin injection technology, specifically to an insulin injection device with a spring-loaded cap structure. Background Technology

[0002] Diabetes is a prevalent disease that exists in all age groups. Persistent hyperglycemia and long-term metabolic disorders can affect the whole body's tissues and organs. Insulin injection is a common medical treatment, usually administered using an insulin pen.

[0003] Utility model patent application CN218944050U discloses an insulin injection pen. The insulin injection pen includes a pen body, a motor, a controller, a pen cap, a liquid level detector, a display screen, a dose adjustment switch, a voice prompt module, a wireless communication module, and a user terminal. The pen body is provided with a liquid reservoir, and a piston and a push rod are provided inside the liquid reservoir. The output end of the motor is connected to the push rod for transmission. The controller is electrically connected to the motor. The pen cap is detachably connected to one side of the pen body, and an ultraviolet lamp is provided inside the pen cap. The liquid level detector is located inside the liquid reservoir and is electrically connected to the controller.

[0004] The above technical solution features a display screen mounted on the pen body, electrically connected to the controller; a dose adjustment switch mounted on the pen body, electrically connected to the controller along with the voice prompt module and wireless communication module; and a user terminal electrically connected to the wireless communication module. This design is convenient and intelligent, facilitating insulin injection for users. However, when using the insulin pen, medical personnel need to manually recap the needle after injection, increasing the risk of needlestick injury. Protecting the needle also increases the risk of infection for medical personnel, and the recapping process is not quick and easy, hindering risk reduction. Utility Model Content

[0005] The purpose of this invention is to provide an insulin injection device with a spring-loaded cap structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An insulin injection device with a spring-loaded cap includes an injection pen. The pen has a first threaded sleeve at its bottom end, a second threaded sleeve at its bottom, and a needle fitted onto the outer wall of the second threaded sleeve. A protective assembly is fitted onto the outer wall of the first threaded sleeve. The protective assembly includes a spring-loaded cap that is inserted into and engages with a base. The inner wall of the top of the base has an internal thread, and the bottom of the base has an annular groove. The outer wall of the base has a sliding groove communicating with the annular groove, and the top of the sliding groove has a locking slot. The spring-loaded cap is inserted into and engages with the annular groove. The top of the spring-loaded cap has a groove, and the center of the top of the spring-loaded cap has a circular groove containing a spring. A handle is provided on the outer wall of the spring-loaded cap at a position corresponding to the sliding groove.

[0008] Furthermore, the top of the injection pen is equipped with a slidable and adjustable piston rod, and the outer wall of the injection pen is equipped with an observation window for observing the internal injection fluid.

[0009] In this invention, the observation window is made of transparent glass, which helps outsiders to observe the amount of insulin solution injected inside. With the piston rod in place and a sealing plug at the bottom of the piston rod, manual pressing is used to inject the insulin solution.

[0010] Specifically, the top of the first threaded sleeve is fused and fixed to the injection pen, the top of the second threaded sleeve is fused and fixed to the bottom of the first threaded sleeve, and the inner wall of the top of the needle is threadedly connected to the outer wall of the second threaded sleeve.

[0011] In this invention, the second threaded sleeve facilitates the threaded connection of the needle, making it easier to replace and install the needle. Compared with the usual plug-in connection, it increases the stability of the installation.

[0012] Secondly, the inner wall of the top of the base is threadedly connected to the outer wall of the first threaded sleeve.

[0013] In this invention, the cooperation of the first threaded sleeve helps to increase the stability of the base thread installation and realizes the combined connection between the protective component and the injection pen.

[0014] Furthermore, the width of the inner wall of the annular groove is adapted to the width of the outer wall of the spring cover, and the total length of the spring cover and the base is greater than the total length of the first threaded sleeve and the needle.

[0015] In this invention, the spring-loaded cap is housed in the base, which helps to expose the needle and facilitate injection. The spring-loaded cap extends from the base to protect the needle, reducing puncture injuries to medical personnel and thus reducing the risk of cross-infection.

[0016] It should be noted that a first through hole is provided at the bottom center of the base, and a second through hole is provided at the bottom center of the spring cover corresponding to the first through hole. The needle passes through the first through hole and the second through hole in sequence.

[0017] In this invention, the cooperation of the first and second perforations facilitates the insertion and use of the needle, allowing for convenient insulin injection without removing the protective components, and reducing the impact of losing the needle protection structure.

[0018] Furthermore, the top of one end of the spring is close to the top of the annular groove, and the bottom of the other end of the spring is close to the bottom of the groove. The handle and the spring-loaded cover are integrally formed. The handle moves up and down in the slide groove and is engaged with the slot. The bottom of the slot is also provided with a limiting block, which is hemispherical.

[0019] In this invention, the spring has elasticity. When insulin injection is required, the spring cover is stored in the annular groove, and the needle is exposed for easy injection. When needle protection is required to reduce the impact on medical staff during puncture, the spring cover extends out of the annular groove. The pull handle provides a point of force while limiting the range of vertical movement of the spring cover. The limiting block is bonded and fixed to the base, which limits the position of the pull handle inserted into the slot to prevent it from rebounding during injection.

[0020] In addition, a rubber sleeve is fitted on the outer wall of the handle, and several anti-slip strips are provided on the outer wall of the base near the bottom. The anti-slip strips are distributed in a ring at equal intervals and are bonded and fixed to the base.

[0021] In this invention, the rubber sleeve increases the friction of the handle, which helps medical staff to adjust and move the handle. The multiple anti-slip strips further increase the friction, making it easier to rotate and install the base.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. This utility model features an injection pen with an observation window for real-time monitoring of the injection solution content. The first threaded post facilitates needle thread installation, while the second threaded post facilitates the installation of protective components. A spring-loaded cap engages with the base, and a pull handle and sliding groove allow for manual pressing of the cap onto the base. The cap is housed in an annular groove for convenient injection, and its ejection protects the needle, reducing the risk of needle puncture injuries to medical personnel.

[0024] 2. This utility model uses a piston rod to perform corresponding pressing injection under external force, and a slot with a limit block to fix the position of the stored spring cover, preventing the spring cover from popping out and affecting the injection during injection. A rubber sleeve is fitted on the handle to increase contact friction and provide a point of force for easy adjustment of the handle position. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the overall protective structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the combined structure of the injection pen and protective components of this utility model;

[0028] Figure 4 This is a schematic diagram of the injection pen frame structure of this utility model;

[0029] Figure 5 This is a schematic diagram of the explosion structure of the protective component of this utility model;

[0030] Figure 6 This is a schematic diagram of the spring-loaded cover structure of this utility model.

[0031] The meanings of the labels in the diagram are as follows:

[0032] 1. Injection pen; 10. Piston rod; 11. Observation window; 12. First threaded sleeve; 13. Second threaded sleeve;

[0033] 2. Needle;

[0034] 3. Protective components; 30. Base; 300. Annular groove; 301. Slide groove; 302. Slot; 303. Limiting block; 304. First perforation; 305. Anti-slip strip; 31. Rebound cover; 310. Circular groove; 311. Second perforation; 312. Groove; 313. Pull handle; 314. Rubber sleeve; 32. Spring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1-6 This embodiment provides a technical solution:

[0037] An insulin injection device with a spring-loaded cap includes an injection pen 1, a slidable and adjustable piston rod 10 on the top of the injection pen 1, and an observation window 11 on the outer wall of the injection pen 1 for observing the internal injection fluid.

[0038] In this invention, the observation window 11 is made of transparent glass, which helps outsiders to observe the amount of insulin solution injected inside. With the cooperation of the piston rod 10 and the sealing plug at the bottom of the piston rod 10, the insulin solution can be injected manually by pressing.

[0039] Furthermore, the injection pen 1 has a first threaded sleeve 12 at its bottom end, a second threaded sleeve 13 at the bottom of the first threaded sleeve 12, a needle 2 on the outer wall of the second threaded sleeve 13, a protective component 3 on the outer wall of the first threaded sleeve 12, the top of the first threaded sleeve 12 is fused and fixed to the injection pen 1, the top of the second threaded sleeve 13 is fused and fixed to the bottom of the first threaded sleeve 12, and the inner wall of the top of the needle 2 is threadedly connected to the outer wall of the second threaded sleeve 13.

[0040] In this invention, the second threaded sleeve 13 facilitates the threaded connection of the needle 2, making it easier to replace and install the needle 2. Compared with the usual plug-in connection, it increases the stability of the installation.

[0041] Specifically, the inner wall of the top of the base 30 is threadedly connected to the outer wall of the first threaded sleeve 12.

[0042] In this invention, the first threaded sleeve 12 helps to increase the stability of the installation of the base 30 threaded installation, and realizes the combined connection of the protective component 3 and the injection pen 1.

[0043] It should be noted that the protective component 3 includes a base 30 and a spring cover 31 that are inserted into the base 30. The inner wall of the top of the base 30 has an internal thread, and the bottom of the base 30 has an annular groove 300. The outer wall of the base 30 has a sliding groove 301 that communicates with the annular groove 300. The top of the sliding groove 301 has a retaining groove 302. The spring cover 31 is inserted into the annular groove 300. The width of the inner wall of the annular groove 300 is adapted to the width of the outer wall of the spring cover 31. The total length of the spring cover 31 and the base 30 is greater than the total length of the first threaded sleeve 12 and the needle 2.

[0044] In this invention, the spring-loaded cover 31 is housed in the base 30, which helps to expose the needle 2 and facilitate injection. The spring-loaded cover 31 extends from the base 30 to protect the needle 2, reduce the puncture injury to medical personnel caused by the tip of the needle 2, and thus reduce the impact of cross-infection.

[0045] Furthermore, a first through hole 304 is provided at the bottom center of the base 30, and a second through hole 311 is provided at the bottom center of the spring cover 31 corresponding to the first through hole 304. The needle 2 passes through the first through hole 304 and the second through hole 311 in sequence.

[0046] In this invention, the cooperation of the first perforation 304 and the second perforation 311 facilitates the insertion and use of the needle 2, making it convenient to perform insulin injection without removing the protective component 3, and reducing the impact of loss of the protective structure of the needle 2.

[0047] Specifically, the top of the spring cover 31 has a groove 312, the middle of the top of the spring cover 31 has a circular groove 310, the groove 312 has a spring 32, and the outer wall of the spring cover 31 has a handle 313 corresponding to the slide groove 301.

[0048] It is worth adding that the top of one end of the spring 32 is close to the top of the annular groove 300, and the bottom of the other end of the spring 32 is close to the bottom of the groove 312. The handle 313 and the spring cover 31 are integrally formed. The handle 313 moves up and down in the slide groove 301 and is engaged with the slot 302. The bottom of the slot 302 is also provided with a limiting block 303, which is hemispherical.

[0049] In this invention, the spring 32 has elasticity. When insulin injection is required, the spring cover 31 is stored in the annular groove 300, and the needle 2 is exposed for easy injection. When it is necessary to protect the needle 2 and reduce the impact on medical staff during puncture, the spring cover 31 extends out of the annular groove 300 with the support of the spring 32. The pull handle 313 provides a point of force while limiting the range of vertical movement of the spring cover 31. The limiting block 303 is bonded and fixed to the base 30, which limits the position of the pull handle 313 inserted in the slot 302 to prevent it from rebounding during injection.

[0050] In addition, a rubber sleeve 314 is fitted on the outer wall of the handle 313, and several anti-slip strips 305 are provided on the outer wall of the base 30 near the bottom. The anti-slip strips 305 are distributed in a ring at equal intervals and are bonded and fixed to the base 30.

[0051] In this invention, the rubber sleeve 314 increases the friction of the handle 313, which helps medical staff to move and adjust the handle 313. The multiple anti-slip strips 305 increase the friction and facilitate the rotation and installation of the base 30.

[0052] In this embodiment, the insulin injection device with a spring-loaded cap structure is used by first inserting the piston rod 10 with a sealing plug into the injection pen 1 with an observation window 11, and threading the needle 2 into the second threaded sleeve 13. The spring-loaded cap 31 is connected to the base 30 via a spring 32, and the pull handle 313 with a rubber sleeve 314 is inserted into the slide groove 301. The first through hole 304 corresponds to the second through hole 311, and the needle 2 passes through the first through hole 304 and the second through hole 311 in sequence. The inner wall of the top of the base 30 is threaded into the first threaded sleeve 12, thus realizing the combined installation of the protective component 3 and the injection pen 1.

[0053] When insulin injection is needed, the spring-loaded cover 31 is stored in the annular groove 300. The pull handle 313 moves from the bottom to the top of the slide groove 301 and engages with the slot 302. The position of the pull handle 313 is fixed with the help of the limiting block 303. The spring 32 is compressed and stored. The needle 2 is passed through the second perforation hole 311. The medical staff presses the piston rod 10 to perform the corresponding injection through the needle 2. After the injection is completed, when it is necessary to protect the needle 2 to reduce the risk of infection caused by the needle 2 puncture, the friction is increased with the help of the rubber sleeve 314. The pull handle 313 is moved from the slot 302 to the slide groove 301. With the help of the spring 32, the spring-loaded cover 31 extends out from the annular groove 300 and covers the needle 2, thereby reducing the impact of contact with the needle 2.

[0054] The overall assembly is easy to install, and with the cooperation of the anti-slip strip 305, the friction is increased, which helps to disassemble and replace the base 30, thereby facilitating the disassembly and replacement of the needle 2.

Claims

1. An insulin injection device with a spring-loaded cap structure, comprising an injection pen (1), characterized in that: The injection pen (1) has a first threaded sleeve (12) at its bottom end, a second threaded sleeve (13) at the bottom of the first threaded sleeve (12), a needle (2) on the outer wall of the second threaded sleeve (13), and a protective component (3) on the outer wall of the first threaded sleeve (12). The protective component (3) includes a spring-loaded cover (31) that is inserted into and fits with a base (30). The inner wall of the top of the base (30) has an internal thread, and the bottom end of the base (30) has an annular groove (300). The outer wall of the book search base (30) is provided with a sliding groove (301) that communicates with the annular groove (300). The top of the sliding groove (301) is provided with a slot (302). The spring cover (31) is inserted into the annular groove (300). The top of the spring cover (31) is provided with a groove (312). The middle of the top of the spring cover (31) is provided with a circular groove (310). A spring (32) is provided in the groove (312). A handle (313) is provided on the outer wall of the spring cover (31) at a position corresponding to the sliding groove (301).

2. The insulin injection device with a spring-loaded cap structure according to claim 1, characterized in that: The top of the injection pen (1) is provided with a slidable and adjustable piston rod (10), and the outer wall of the injection pen (1) is provided with an observation window (11) for observing the internal injection fluid.

3. The insulin injection device with a spring-loaded cap structure according to claim 1, characterized in that: The top of the first threaded sleeve (12) is fused and fixed to the injection pen (1), the top of the second threaded sleeve (13) is fused and fixed to the bottom of the first threaded sleeve (12), and the inner wall of the top of the needle (2) is threadedly connected to the outer wall of the second threaded sleeve (13).

4. The insulin injection device with a spring-loaded cap structure according to claim 1, characterized in that: The inner wall of the top of the base (30) is threadedly connected to the outer wall of the first threaded sleeve (12).

5. The insulin injection device with a spring-loaded cap structure according to claim 1, characterized in that: The width of the inner wall of the annular groove (300) is adapted to the width of the outer wall of the spring cover (31), and the total length of the spring cover (31) and the base (30) is greater than the total length of the first threaded sleeve (12) and the needle (2).

6. The insulin injection device with a spring-loaded cap structure according to claim 1, characterized in that: The base (30) has a first through hole (304) at the middle of its bottom, and the spring cover (31) has a second through hole (311) at the middle of its bottom, corresponding to the first through hole (304). The needle (2) passes through the first through hole (304) and the second through hole (311) in sequence.

7. The insulin injection device with a spring-loaded cap structure according to claim 1, characterized in that: The top of one end of the spring (32) is close to the top of the annular groove (300), and the bottom of the other end of the spring (32) is close to the bottom of the groove (312). The handle (313) and the spring cover (31) are integrally formed. The handle (313) moves up and down in the slide groove (301) and is inserted into the slot (302). The bottom of the slot (302) is also provided with a limiting block (303), which is hemispherical.

8. The insulin injection device with a spring-loaded cap structure according to claim 1, characterized in that: A rubber sleeve (314) is fitted on the outer wall of the handle (313), and a number of anti-slip strips (305) are provided on the outer wall of the base (30) near the bottom. The anti-slip strips (305) are distributed in a ring at equal intervals, and the anti-slip strips (305) are bonded and fixed to the base (30).

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