Stable-connection replaceable medicine bin for injection pen

Abstract

The utility model relates to the technical field of medical instruments, in particular to a stably-connected replaceable medicine bin for an injection pen, which comprises a pen cap sleeved on a pen body, and an installation structure for stably installing medicine is arranged in the pen body. According to the utility model, the spring type buckle is clamped at the neck part of the card type bottle under the action of self elasticity, so that the card type bottle is quickly mounted, the card type bottle is difficult to reversely fall off due to the unidirectivity of the spring type buckle, and the medicine bin is directly discarded after the medicine in the card type bottle is used, so that a patient is prevented from repeatedly using the medicine bin; when the medicine bin is connected to the guide fixing base in a sleeving mode, the cushion block makes contact with the top of the clamping type bottle in the medicine bin, so that the clamping type bottle is pressed and fixed in the medicine bin, the stability of the clamping type bottle is further improved, and the situation that the clamping type bottle shakes, and the accuracy of the injection dosage is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a replaceable, stable-connection medicine cartridge for an injection pen. Background Technology

[0002] In modern medicine, especially in the treatment of diabetes, insulin pens have become a widely used insulin delivery tool. With the increasing number of diabetic patients, the demand for convenience and accuracy in insulin pens is also rising. Insulin pens allow patients to administer subcutaneous insulin injections themselves. Compared to traditional syringes, they are simpler to operate, offer more precise dosage control, and are easy to carry, thus improving patient medication adherence.

[0003] However, traditional injection pens use a non-replaceable cartridge design, where the cartridge and pen body are molded as one piece or are fixedly sealed. This means that once the medication in the cartridge is used up, the entire injection pen needs to be discarded, which not only increases the cost for patients but also wastes resources.

[0004] Some existing replaceable cartridge injection pens also have defects. When installing the medication bottle in the replaceable cartridge, the connection structure is not stable enough. After long-term use or when subjected to slight external impact, the medication bottle in the cartridge may loosen or even fall off. This may lead to drug leakage, affect the accuracy of the injection dosage, and thus affect the patient's blood sugar control. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a stable and replaceable drug cartridge for an injection pen. This solves the technical problem of insufficiently stable connection of the drug bottle within the existing drug cartridge, leading to drug leakage and affecting the accuracy of the injection dosage. It achieves the goal of stably fixing the drug bottle within the drug cartridge and enabling precise injection.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a replaceable medicine cartridge with stable connection for an injection pen, including a pen cap sleeved on the pen body, and an installation structure for stably installing the medicine is provided inside the pen body.

[0007] The mounting structure includes a medicine compartment mounted on the pen body, and a spring-loaded buckle is installed inside the medicine compartment. A cartridge bottle is installed inside the medicine compartment, and the neck of the cartridge bottle is engaged with the spring-loaded buckle. A locking component is provided on the pen body to press and fix the cartridge bottle.

[0008] A further improvement is that the locking component includes a guide fixing seat installed inside the pen body and sleeved on the medicine cartridge, and a measuring scale shaft is installed inside the guide fixing seat. A pad is installed at the bottom of the measuring scale shaft, and a screwing component is provided at the connection between the medicine cartridge and the guide fixing seat to improve the connection stability.

[0009] A further improvement is that the screwing assembly includes a screwing platform located at the top of the medicine compartment, and an arc-shaped guide groove is provided on the screwing platform. An arc-shaped protrusion is installed in the guide fixing seat and is slidably connected to the arc-shaped guide groove.

[0010] A further improvement is that a protrusion is installed on the bottom of the inner wall of the guide fixing seat, and a groove corresponding to the protrusion is opened on the screwing platform.

[0011] A further improvement is that a pulsator is installed on the top of the pen body, and a magnifying glass is installed on the pen body to facilitate observation of the remaining dosage.

[0012] A further improvement is that the medicine container is equipped with a locking point that engages with the pen cap, and an arc-shaped groove is provided through the medicine container.

[0013] By employing the above technical solution, this utility model provides a replaceable, stable-connection cartridge for an injection pen, which has at least the following beneficial effects:

[0014] 1. This utility model uses a spring-loaded buckle to engage with the neck of the cartridge vial under its own elasticity, thus quickly completing the installation of the cartridge vial. Due to the unidirectional nature of the spring-loaded buckle, the cartridge vial is difficult to fall off in the opposite direction. After the medication in the cartridge vial is used up, the medication container can be discarded directly, avoiding patients from reusing the medication container, which could cause the medication container to loosen from the cartridge vial and thus affect the accuracy of the injection dosage.

[0015] 2. This utility model allows the curved guide groove on the rotating platform to slide and engage with the curved protrusion on the inner wall of the guide fixing seat by rotating the medicine chamber. The curved sliding engagement improves the stability of the connection between the two. With the engagement of the protrusion and the groove, the patient can hear the engagement sound when the rotation is completed, and there will be a more obvious climbing feeling, thus informing the patient that the rotation is in place.

[0016] 3. When the medicine container is fitted onto the guide fixing seat, the pad contacts the top of the cartridge bottle inside the medicine container, thereby pressing and fixing the cartridge bottle inside the medicine container, further improving the stability of the cartridge bottle and preventing it from shaking and affecting the accuracy of the injection dosage. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0018] In the attached diagram:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the disassembled installation structure of this utility model;

[0022] Figure 4 This is a schematic diagram showing the disassembled structure of the installation structure and locking component of this utility model;

[0023] Figure 5 This utility model Figure 4 Schematic diagram of the internal structure at point A in the middle;

[0024] Figure 6 This is a cross-sectional view of the internal structure of the guide fixing seat of this utility model.

[0025] In the picture: 1. Pen body; 2. Pen cap;

[0026] 3. Installation structure; 31. Medicine compartment; 32. Spring-loaded buckle; 33. Cartridge bottle;

[0027] 34. Locking assembly; 341. Guide fixing seat; 342. Measuring scale shaft; 343. Pad;

[0028] 35. Twisting assembly; 351. Twisting platform; 352. Arc-shaped guide groove; 353. Arc-shaped protrusion; 354. Protrusion; 355. Groove;

[0029] 41. Impeller; 42. Magnifying glass; 43. Clamping point; 44. Arc groove. Detailed Implementation

[0030] 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.

[0031] Example 1

[0032] Addressing the issue of insufficiently secure connections between medication vials in existing injection pens, leading to drug leakage and affecting dosage accuracy, this embodiment provides a stable, replaceable medication cartridge for injection pens. Please refer to... Figures 1-6This embodiment provides a stable, replaceable cartridge for an injection pen, which can stably fix the medication bottle inside the cartridge for precise injection. The stable, replaceable cartridge includes a pen cap 2 that fits onto the pen body 1. The pen body 1 has an installation structure 3 for stable installation of the medication. The installation structure 3 allows for quick installation of a cartridge 33 into the cartridge 31. A locking component 34 secures the cartridge 33 within the cartridge 31, preventing movement of the cartridge 33 and improving connection stability, thereby achieving precise medication injection.

[0033] Because the connection of the medicine bottle in the existing medicine container 31 is not secure enough, it leads to drug leakage and affects the accuracy of the injection dosage. Therefore, this device is equipped with an installation structure 3. The installation structure 3 includes a medicine container 31 installed on the pen body 1, and a spring-loaded buckle 32 is installed inside the medicine container 31. A cartridge bottle 33 is installed inside the medicine container 31, and the neck of the cartridge bottle 33 is engaged with the spring-loaded buckle 32. The pen body 1 is equipped with a locking component 34 for pressing and fixing the cartridge bottle 33. When the cartridge bottle 33 is inserted into the matching medicine container 31, its top presses and pushes open the spring-loaded buckle 32 until... When the top of the cartridge 33 slides into the bottom of the cartridge 31, the spring-loaded buckle 32 resets and engages with the neck of the cartridge 33 under its own elasticity, thus quickly completing the installation of the cartridge 33. Due to the unidirectional nature of the spring-loaded buckle 32, the cartridge 33 is difficult to fall off in the opposite direction. After the medication in the cartridge 33 is used up, the cartridge 31 can be discarded directly, avoiding the patient's repeated use of the cartridge 31, which could cause the cartridge 31 and the cartridge 33 to loosen, thus affecting the accuracy of the injection dosage. In addition, the cartridge 31 and the cartridge 33 are compatible with each other, avoiding the situation where patients mix multiple medications, thus reducing the probability of medical accidents.

[0034] To prevent the cartridge 33 from shaking inside the medication compartment 31 due to impacts on the pen body 1, thus affecting the accuracy of the injection dosage, the device is also equipped with a locking component 34. The locking component 34 includes a guide fixing seat 341 installed inside the pen body 1 and fitted onto the medication compartment 31. A measuring scale shaft 342 is installed inside the guide fixing seat 341, and a pad 343 is installed at the bottom of the measuring scale shaft 342. A screwing component 35 is provided at the connection between the medication compartment 31 and the guide fixing seat 341 to improve the connection stability. When the medication compartment 31 is fitted onto the guide fixing seat 341, the pad 343 at the bottom of the measuring scale shaft 342 contacts the top of the cartridge 33 inside the medication compartment 31, thereby pressing and fixing the cartridge 33 inside the medication compartment 31, further improving the stability of the cartridge 33 and preventing it from shaking and affecting the accuracy of the injection dosage.

[0035] A pulsator 41 is installed on the top of the pen body 1, and a magnifying glass 42 is installed on the pen body 1 to facilitate observation of the remaining drug dosage. The pulsator 41 is turned to inject the drug, and the injected drug dosage can be observed in real time through the magnifying glass 42.

[0036] The medicine container 31 is equipped with a locking point 43 that engages with the pen cap 2, and an arc-shaped groove 44 is provided through the medicine container 31. When connecting the pen body 1 and the pen cap 2, the medicine container 31 can be engaged with the pen cap 2 through the locking point 43. The remaining dosage of the medicine in the cartridge 33 inside the medicine container 31 can be observed through the arc-shaped groove 44 during injection.

[0037] Example 2

[0038] Based on Example 1, such as Figures 1-6 As shown, the straight-up-down sleeve method makes it easier for the medicine container 31 to detach from the guide fixing seat 341. Therefore, the device is also equipped with a screwing assembly 35. The screwing assembly 35 includes a screwing platform 351 located on the top of the medicine container 31, and an arc-shaped guide groove 352 is provided on the screwing platform 351. An arc-shaped protrusion 353 is installed in the guide fixing seat 341 and is slidably connected to the arc-shaped guide groove 352. When installing the medicine container 31, screwing the medicine container 31 causes the arc-shaped guide groove 352 on the screwing platform 351 on the medicine container 31 to slide and engage with the arc-shaped protrusion 353 on the inner wall of the guide fixing seat 341, thereby improving the stability of the connection between the two.

[0039] Since the user cannot directly observe the tightness of the screwing during the tightening process, the device has a protrusion 354 installed on the bottom of the inner wall of the guide fixing seat 341. The screwing platform 351 has a groove 355 corresponding to the protrusion 354. As the medicine cartridge 31 is screwed into the guide fixing seat 341, the protrusion 354 on the inner wall of the guide fixing seat 341 is engaged in the groove 355 on the screwing platform 351. At this time, the patient can hear the click of the two engaging and will have a relatively obvious climbing feel, thus informing the patient that it has been screwed in place.

[0040] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connection-stable replaceable cartridge for an injection pen, comprising a cap (2) which is fitted onto a pen body (1), characterized in that: The pen body (1) is provided with an installation structure (3) for stably installing the medicament; The installation structure (3) comprises a cartridge (31) installed on the pen body (1), and a spring buckle (32) is installed inside the cartridge (31); a cartridge bottle (33) is installed in the cartridge (31), and the neck of the cartridge bottle (33) is clamped on the spring buckle (32); and a locking assembly (34) for pressing and fixing the cartridge bottle (33) is arranged on the pen body (1).

2. The connection-stable, replaceable cartridge for an injection pen according to claim 1, characterized in that The locking assembly (34) comprises a guide fixing seat (341) installed in the pen body (1) and sleeved on the cartridge (31), and a metering scale shaft (342) is installed in the guide fixing seat (341); a pad (343) is installed at the bottom of the metering scale shaft (342); and a screwing assembly (35) for improving the connection stability is arranged at the connection between the cartridge (31) and the guide fixing seat (341).

3. The connection-stable, replaceable cartridge for an injection pen according to claim 2, characterized in that: The screwing assembly (35) comprises a screwing platform (351) located at the top of the cartridge (31), and an arc-shaped guide groove (352) is formed in the screwing platform (351); an arc-shaped protrusion (353) is installed in the guide fixing seat (341) and is arc-shapedly and slidably connected in the arc-shaped guide groove (352).

4. The connection-stable, replaceable cartridge for an injection pen according to claim 3, characterized in that: A protrusion (354) is installed at the bottom of the inner wall of the guide fixing seat (341), and a recess (355) corresponding to the protrusion (354) is formed in the screwing platform (351).

5. The connection-stable replaceable medicine cartridge for an injection pen according to claim 1, characterized in that: A wave wheel (41) is installed at the top of the pen body (1), and a magnifying glass (42) for observing the remaining amount of medicament is installed on the pen body (1).

6. The connection-stable replaceable medicine cartridge for an injection pen according to claim 1, characterized in that: A clamping point (43) for clamping the pen cap (2) is installed on the cartridge (31), and an arc-shaped groove (44) is formed in the cartridge (31).

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