CN218900453U

CN218900453U - Refill holder structure of insulin injection pen

Info

Publication number: CN218900453U
Application number: CN202222309763.7U
Authority: CN
Inventors: 胡毅彤; 段丹; 荣加鹏; 胡纤; 曹金枝; 秦依楠; 葛何宇; 宋杨; 孙勇超; 张婷
Original assignee: Hubei University of Science and Technology
Current assignee: Hubei University of Science and Technology
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-04-25
Anticipated expiration: 2032-08-29

Abstract

The utility model provides a refill holder structure of an insulin injection pen, which comprises a refill holder body and a protective cover which is connected to the outer wall of the refill holder body in a sliding manner; the upper end and the lower end of the pen refill holder body are respectively provided with a threaded interface for connecting the pen body and the needle head; the upper part of the protective cover is distributed with a plurality of tearing openings, and the inner wall of the protective cover is provided with two circles of limit protrusions; a plurality of observation windows are distributed on the wall surface of the pen refill holder body, and each limiting protrusion is slidably connected into the corresponding observation window; the middle part of the inner wall of the protective cover is provided with a mounting groove, a spring is detachably connected in the mounting groove, and the inner diameter of the spring is smaller than the outer diameter of the pen core frame body; the bottom of the protective cover is also provided with a needle head avoiding hole. The utility model has the advantages of safe use, no increase of the medication cost of patients, and the like.

Description

Refill holder structure of insulin injection pen

Technical Field

The utility model belongs to the technical field of medical appliances, and relates to a refill holder structure of an insulin injection pen.

Background

The insulin injection pen is an insulin injection device which is required to be used daily by diabetics, and the lower end of the insulin injection pen is provided with a sharp needle head, so that people can be stabbed when the insulin injection pen is not noticed, and protective isolation measures are required to be adopted for the needle head part of the insulin injection pen.

In order to prevent the puncture of people, the insulin injection pen in the prior art mostly adopts a protective cover added at the needle head, and the needle head is used as a consumable product which needs to be replaced frequently, so that the increase of the structure of the insulin injection pen inevitably brings about the rise of the cost, and the medication cost of a patient suffering from the illness is also increased.

Disclosure of Invention

The utility model aims to solve the problems of the prior art and provide a refill holder structure of an insulin injection pen, and aims to solve the technical problems of optimizing the structure of the prior insulin injection pen, so that a needle head protection structure is arranged on the refill holder, thereby ensuring the protection of a needle head and reducing the medication cost of patients.

The aim of the utility model can be achieved by the following technical scheme: the pen refill holder structure of the insulin injection pen is characterized in that the pen refill holder comprises a pen refill holder body and a protective cover which is connected to the outer wall of the pen refill holder body in a sliding manner; the upper end and the lower end of the pen refill holder body are respectively provided with a threaded interface for connecting the pen body and the needle head; the upper part of the protective cover is provided with a plurality of tearing openings, and the inner wall of the protective cover is provided with two circles of limiting protrusions; a plurality of observation windows are distributed on the wall surface of the pen refill holder body, and each limiting protrusion can be slidably connected into the corresponding observation window; the middle part of the inner wall of the protective cover is provided with a mounting groove, a spring is detachably connected in the mounting groove, and the inner diameter of the spring is smaller than the outer diameter of the pen core frame body; the bottom of the protective cover is also provided with a needle head avoiding hole.

Preferably, the pen refill rack further comprises an outer cover matched with the protective cover, a fixing rod is fixed at the inner bottom of the outer cover, and the fixing rod can be inserted into the needle avoiding hole and enables the outer cover to be fixed outside the protective cover.

The utility model has the advantages that:

1. the pen core frame is provided with the needle head protective cover, so that the human body can be effectively prevented from being stabbed, and the protective cover is not arranged on the needle head, so that the medication cost of a patient can not be increased.

2. In this refill frame, because its protection casing has been slided, and its during its not use, its syringe needle also is possible to stretch out, and then still probably leads to the accidental injury, so special its protection casing sets up an dustcoat outward, and it can tighten the upper portion of protection casing, and then makes two rings spacing protruding on the protection casing inner wall firmly support in the lower extreme of observation window and refill frame body, and then makes the protection casing unable slip, has further promoted its security.

Drawings

Fig. 1 is a schematic perspective view of the cartridge holder.

Fig. 2 is a schematic sectional view of the cartridge holder.

In the figure, 1, a refill holder body; 11. a threaded interface; 12. an observation window; 2. a protective cover; 21. tearing the mouth; 22. a limit protrusion; 23. a mounting groove; 24. needle point avoiding holes; 3. a spring; 4. an outer cover; 41. and a fixing rod.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 and 2, a cartridge holder structure of an insulin injection pen comprises a cartridge holder body 1 and a protective cover 2 slidably connected to the outer wall of the cartridge holder body 1; the upper end and the lower end of the pen refill holder body 1 are respectively provided with a threaded interface 11 for connecting the pen body and the needle head; the upper part of the protective cover 2 is provided with a plurality of tearing slits 21, and the inner wall of the protective cover 2 is provided with two circles of limit protrusions 22; a plurality of observation windows 12 are distributed on the wall surface of the pen refill holder body 1, and each limiting protrusion 22 can be slidably connected in the corresponding observation window 12; the middle part of the inner wall of the protective cover 2 is provided with a mounting groove 23, a spring 3 is detachably connected in the mounting groove 23, and the inner diameter of the spring 3 is smaller than the outer diameter of the pen refill holder body 1; the bottom of the protective cover 2 is also provided with a needle avoiding hole 24.

Working principle: the pen refill holder is provided with the slidable protective cover 2 outside, the protective cover 2 is internally provided with the spring 3, and the bottom is provided with the needle head avoiding hole 24, so when insulin injection is needed by using the pen refill holder, the pen body is pressed only by the pen body, the protective cover 2 can move upwards relative to the pen refill holder body 1, and the needle head extends out of the protective cover 2 to penetrate the skin to complete insulin injection. During injection, the two circles of limiting protrusions 22 slide in the observation window 12; when the injection pen is needed to be retracted after the injection is completed, the protective cover 2 can be pulled down, so that a circle of limiting protrusions 22 close to the lower part leaves the observation window 12 and passes over the lower part of the pen core frame body 1, a circle of limiting protrusions 22 positioned on the upper part are still positioned in the observation window 12, the two circles of limiting protrusions 22 respectively lean against the lower ends of the observation window 12 and the pen core frame body 1, and then the protective cover 2 is fixed, and the situation that a needle is exposed by sliding under the action of external force can be avoided, so that the risk of stabbing is brought. When the needle needs to be replaced, we can continue to pull down the shield 2 so that the circle of limit protrusions 22 on the upper part also leaves the observation window 12, and then remove the protection and replace the needle. In the pen refill holder, the observation window 12 is not only convenient for people to observe the service condition of the pen refill in the pen refill holder body, but also serves as a sliding chute of the limiting boss 22 to realize the sliding and clamping connection of the pen refill holder body 1 and the protective cover 2.

The pen refill rack also comprises an outer cover 4 which is matched with the protective cover 2, a fixing rod 41 is fixed at the inner bottom of the outer cover 4, and the fixing rod 41 can be inserted into the needle avoiding hole 24 and enables the outer cover 4 to be fixed outside the protective cover 2; because its protection casing 2 has been slideable, and its syringe needle also has the possibility to stretch out when not using, and then still probably leads to the accidental injury, so special its protection casing 2 is equipped with a dustcoat 4 outward, and it can tighten the upper portion of protection casing 2, and then makes two rings spacing protruding 22 on the protection casing 2 inner wall firmly support in the lower extreme of observation window 12 and refill frame body 1, and then makes protection casing 2 unable to slide, has further promoted its security.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The pen refill holder structure of the insulin injection pen is characterized in that the pen refill holder comprises a pen refill holder body (1) and a protective cover (2) which is connected to the outer wall of the pen refill holder body (1) in a sliding manner; the upper end and the lower end of the pen refill holder body (1) are respectively provided with a threaded interface (11) for connecting the pen body and the needle head; the upper part of the protective cover (2) is provided with a plurality of tearing slits (21), and the inner wall of the protective cover (2) is provided with two circles of limit protrusions (22); a plurality of observation windows (12) are distributed on the wall surface of the pen refill holder body (1), and each limiting protrusion (22) can be slidably connected into the corresponding observation window (12); the middle part of the inner wall of the protective cover (2) is provided with a mounting groove (23), a spring (3) is detachably connected in the mounting groove (23), and the inner diameter of the spring (3) is smaller than the outer diameter of the pen core frame body (1); the bottom of the protective cover (2) is also provided with a needle avoiding hole (24).

2. The pen refill holder structure of an insulin injection pen according to claim 1, further comprising an outer cover (4) adapted to the protective cover (2), wherein a fixing rod is fixed to the inner bottom of the outer cover (4), and the fixing rod can be inserted into the needle avoiding hole (24) and fix the outer cover (4) outside the protective cover (2).