CN211383198U - Insulin pen capable of preventing puncture - Google Patents

Abstract

The utility model discloses a prevent stabbing insulin pen relates to hospital articles for use field, provides one kind and can make things convenient for the syringe needle to dismantle and reduce the insulin pen that the risk was hindered to the needle-prick. The insulin pen comprises a pen body, a needle head and a connecting sleeve; the pen body comprises a pen body main body and a needle head connecting part, and a guide groove is formed in the needle head connecting part; the connecting sleeve comprises a large connecting sleeve part and a small connecting sleeve part, the small connecting sleeve part is sleeved on the needle head connecting part, the front end of the small connecting sleeve part is positioned behind the front end of the needle head connecting part, a connecting external thread is arranged on the small connecting sleeve part, the large connecting sleeve part is sleeved on the pen body, and the connecting sleeve can rotate and is limited in axial movement; the needle comprises a needle cover, the needle cover comprises a front needle cover section and a rear needle cover section, the front needle cover section is provided with a guide convex strip, and the rear needle cover section is provided with a connecting internal thread; the front section of the needle head sleeve is sleeved on the needle head connecting part, the guide raised line is matched with the guide groove, and the rear section of the needle head sleeve is connected with the small connecting sleeve part through a connecting internal thread and a connecting external thread.

Description

Insulin pen capable of preventing puncture

Technical Field

The utility model relates to a hospital articles for use field especially relates to a prevent stabbing insulin pen.

Background

More serious diabetics require daily injections of insulin and insulin pens are the means for injecting insulin.

A common insulin pen is shown in figures 1 and 2 and comprises a pen body and a needle, wherein the needle is in threaded connection with the pen body. The pen body is used for a long time, and the needle head needs to be replaced after each injection, so that the adverse effect on a human body caused by the pollution of the needle head is avoided. The syringe needle collocation has the needle cap, and syringe needle surface and needle cap internal surface all have concave-convex structure, and the concave-convex structure of the two cooperatees and can avoid the two relative rotation. When the needle head is installed, the front end of the pen body is inserted into the needle cap and screwed down by holding the needle cap by one hand and the pen body by the other hand. After the needle head is installed, the needle cap is taken down, and the needle cap is used for preventing the needle head from being punctured in the installation process.

As previously mentioned, the needle mounting process is very safe due to the protection of the needle cap. But after the insulin injection, the needle head is detached with a puncture risk. In order to avoid puncture, the needle head is not required to be held by hand for disassembly, and the needle cap is not required to be sleeved back on the needle head for disassembly. At present, the mode that is often adopted is to use pliers to clamp the needle head for disassembly. Ordinary forceps are inconvenient to use, and thus many patents for tools for insulin pen needle removal have been developed. For example: ZL201821512045.7, ZL201821423977.4, ZL 201821056556.2.

Although the disassembling tool disclosed in the above patent can facilitate the disassembly of the insulin needle and reduce the risk of needle stick injury, after all, the operation is still inconvenient by means of an external tool; if insulin pen self just has the function that makes things convenient for the syringe needle to dismantle and reduce the risk of stabbing, will greatly make things convenient for the user.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the insulin pen can facilitate the detachment of the needle and reduce the risk of needle stick injury.

The technical scheme adopted for solving the problems is as follows: the puncture-preventing insulin pen comprises a pen body and a needle head, wherein the needle head is detachably connected with the pen body; the device also comprises a connecting sleeve; the pen body comprises a pen body main body and a needle head connecting part, and a guide groove is formed in the needle head connecting part; the connecting sleeve comprises a large connecting sleeve part and a small connecting sleeve part, the small connecting sleeve part is sleeved on the needle head connecting part, the front end of the small connecting sleeve part is positioned behind the front end of the needle head connecting part, a connecting external thread is arranged on the small connecting sleeve part, the large connecting sleeve part is sleeved on the pen body, and the connecting sleeve can rotate and is limited in axial movement; the needle comprises a needle cover, the needle cover comprises a front needle cover section and a rear needle cover section, the front needle cover section is provided with a guide convex strip, and the rear needle cover section is provided with a connecting internal thread; the front section of the needle head sleeve is sleeved on the needle head connecting part, the guide raised line is matched with the guide groove, and the rear section of the needle head sleeve is connected with the small connecting sleeve part through a connecting internal thread and a connecting external thread.

Further, the method comprises the following steps: the length of the back section of the needle head sleeve is smaller than the distance between the front end of the small part of the connecting sleeve and the front end of the needle head connecting part.

Further, the method comprises the following steps: be provided with sealed the pad in the syringe needle cover anterior segment, sealed pad and the preceding terminal surface laminating of syringe needle connecting portion.

Further, the method comprises the following steps: a limiting flange is arranged on the pen body, a limiting groove is arranged on the large part of the connecting sleeve, and the limiting flange is matched with the limiting groove.

Further, the method comprises the following steps: the connecting sleeve large part comprises a connecting sleeve large part A and a connecting sleeve large part B, the connecting sleeve large part A and the connecting sleeve large part B are in threaded connection, and a limiting flange is formed between the connecting sleeve large part A and the connecting sleeve large part B.

The utility model has the advantages that: the application improves the pen body and the needle structure of the insulin pen. As shown in fig. 4 and 5, when the insulin pen needle is installed, the needle with the needle cap is sleeved on the front end of the needle connecting part, and the needle sleeve is contacted with the small part of the connecting sleeve; at the moment, the thumb and the forefinger of the hand holding the pen body hold the large connecting sleeve part and rotate forwards, the rear section of the needle sleeve is connected with the small connecting sleeve part through the connecting internal thread and the connecting external thread, and the small connecting sleeve part pulls the needle sleeve backwards to finally realize the connection of the needle and the pen body; the guide raised lines are aligned and enter the guide grooves in the process, and the needle head can be prevented from rotating along with the connecting sleeve due to the matching of the guide raised lines and the guide grooves.

Similarly, as shown in fig. 4 and 5, when the insulin pen needle is detached, the pen body and the large connecting sleeve part are held by hands, the large connecting sleeve part is rotated reversely, the small connecting sleeve part can push the needle outwards under the transmission action of the connecting internal thread and the connecting external thread, and finally the needle is separated from the small connecting sleeve part; at the moment, the insulin pen only needs to be inverted or slightly shaken, and the needle head can slide away from the needle head connecting part to realize the detachment of the needle head.

In the process of disassembling the insulin pen needle head, the connecting sleeve large part is operated without contacting the needle head, and is far away from the needle head, so that the risk of stabbing of an operator is extremely low; other disassembling tools are not needed in the whole process, and the operation is simple. Compared with the prior art, the installation process of the insulin pen needle only needs to make the guide convex strip align with the guide groove, and is completely within an acceptable range.

Drawings

FIG. 1 is a structural diagram of a prior insulin pen (with a needle cap);

FIG. 2 is a block diagram of a prior art insulin pen (without a needle cap);

FIG. 3 is an exploded view of the anti-stab insulin pen assembly of the present invention;

FIG. 4 is a structural diagram of the insulin pen for preventing puncture;

FIG. 5 is a diagram illustrating the assembly process of the anti-stab insulin pen of the present invention;

FIG. 6 is a front end view of the pen body;

FIG. 7 is a rear end view of the needle;

fig. 8 is a structure view of a connection sleeve;

labeled as: the pen comprises a needle 1, a needle cover 11, a front needle cover section 111, a guide convex strip 1111, a rear needle cover section 112, a connecting internal thread 1121, a sealing gasket 113, a pen body 2, a pen body 21, a limiting flange 211, a needle connecting part 22, a guide groove 221, a connecting sleeve 3, a connecting sleeve large part 31, a limiting groove 311, a connecting sleeve large part A312, a connecting sleeve large part B313, a connecting sleeve small part 32, a connecting external thread 321 and a needle cap 4.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 3 to 7: the puncture-preventing insulin pen comprises a pen body 2 and a needle head 1, wherein the needle head 1 is detachably connected with the pen body 2; the device also comprises a connecting sleeve 3; the pen body 2 comprises a pen body main body 21 and a needle head connecting part 22, and a guide groove 221 is arranged on the needle head connecting part 22; the connecting sleeve 3 comprises a connecting sleeve large part 31 and a connecting sleeve small part 32, the connecting sleeve small part 32 is sleeved on the needle head connecting part 22, the front end of the connecting sleeve small part 32 is positioned behind the front end of the needle head connecting part 22, a connecting external thread 321 is arranged on the connecting sleeve small part 32, the connecting sleeve large part 31 is sleeved on the pen body main body 21, and the connecting sleeve 3 can rotate and is limited in axial movement; the needle 1 comprises a needle cover 11, the needle cover 11 comprises a needle cover front section 111 and a needle cover rear section 112, a guide convex strip 1111 is arranged on the needle cover front section 111, and a connecting internal thread 1121 is arranged on the needle cover rear section 112; needle cover front section 111 is nested on needle connecting portion 22, guide rib 1111 is matched with guide groove 221, and needle cover rear section 112 is connected with connecting sleeve small portion 32 through connecting internal thread 1121 and connecting external thread 321.

The structure of the pen body 2 and the structure of the needle head 1 of the insulin pen are improved. As shown in fig. 4 and 5, when the needle 1 is installed, the needle 1 provided with the needle cap 4 is sleeved on the front end of the needle connecting part 22, and the needle cover 11 is contacted with the connecting sleeve small part 32; at the moment, the thumb and the forefinger of the hand holding the pen body 2 hold the connecting sleeve large part 31 and rotate forwards, the needle sleeve rear section 112 is connected with the connecting sleeve small part 32 through the connecting internal thread 1121 and the connecting external thread 321, and the connecting sleeve small part 32 pulls the needle sleeve 11 backwards to finally realize the connection of the needle 1 and the pen body 2; in the process, the guiding ribs 1111 should be aligned with and enter the guiding grooves 221, and the guiding ribs 1111 and the guiding grooves 221 cooperate to prevent the needle 1 from rotating with the connecting sleeve 3.

Also as shown in fig. 4 and 5, when the insulin needle is detached, the pen body 2 and the connecting sleeve large part 31 are held by hand, then the connecting sleeve large part 31 is rotated reversely, and the connecting sleeve small part 32 can push the needle 1 outwards by virtue of the transmission action of the connecting internal thread 1121 and the connecting external thread 321, and finally the needle 1 is separated from the connecting sleeve small part 32; at this time, the insulin pen is only needed to be inverted or slightly shaken, and the needle 1 can slide away from the needle connecting part 22 to realize the detachment of the needle 1.

The utility model discloses syringe needle 1 disposable, and adapter sleeve 3 is used repeatedly along with handwriting 2.

Further, the preferred length of the needle cover rear section 112 of the present invention is less than the distance between the front end of the connecting sleeve small portion 32 and the front end of the needle connecting portion 22. With such an arrangement, as shown in fig. 5, when the needle cover 11 contacts the small connecting sleeve portion 32, the front needle cover section 111 is already sleeved on the needle connecting portion 22, and the guiding rib 1111 also enters the guiding groove 221, so that the needle 1 can be conveniently installed. If this is not the case, it is relatively cumbersome to adjust the guide rib 1111 to align with the guide slot 221 after the needle cover rear section 112 is threaded onto the connection sleeve small portion 32.

The bottom surface of the needle cover front section 111 is attached to the front end surface of the needle connecting part 22, and the matching of the connecting internal thread 1121 and the connecting external thread 321 has a sealing function, so that the leakage of insulin can be avoided to a certain extent. However, in order to further improve the sealing effect, the sealing gasket 113 is preferably disposed in the front section 111 of the needle cover, and the sealing gasket 113 is attached to the front end surface of the needle connecting portion 22.

As mentioned before, the utility model discloses adapter sleeve 3 can rotate and axial displacement limited. The mode of 3 axial displacement of restriction adapter sleeve has the multiple, the utility model discloses preferred mode is: the pen body main body 21 is provided with a limiting flange 211, the connecting sleeve large part 31 is provided with a limiting groove 311, and the limiting flange 211 is matched with the limiting groove 311.

Due to the blocking of the limiting flange 211, the connecting sleeve 3 is inconvenient to be integrally and directly sleeved on the pen body 2, and the following setting can be made for this reason: the connecting sleeve large part 31 comprises a connecting sleeve large part A312 and a connecting sleeve large part B313, wherein the connecting sleeve large part A312 is in threaded connection with the connecting sleeve large part B313, and a limiting flange 211 is formed between the connecting sleeve large part A312 and the connecting sleeve large part B313. When the insulin pen is produced, the connecting sleeve large part A312 and the connecting sleeve small part 32 are sleeved on the pen body 2 from front to back, the connecting sleeve large part B313 is sleeved on the pen body 2 from back to front, and then the connecting sleeve large part A312 and the connecting sleeve large part B313 are in threaded connection, and the two parts can be prevented from being separated by arranging thread glue and the like. Of course, other common ways can be used, for example, the connecting sleeve 3 is split into two parts in the axial direction and then spliced by glue.

The connecting sleeve 3 is preferably made of transparent plastic.

Claims (5)

1. The puncture-preventing insulin pen comprises a pen body (2) and a needle (1), wherein the needle (1) is detachably connected with the pen body (2); the method is characterized in that: comprises a connecting sleeve (3); the pen body (2) comprises a pen body main body (21) and a needle head connecting part (22), and a guide groove (221) is formed in the needle head connecting part (22); the connecting sleeve (3) comprises a large connecting sleeve part (31) and a small connecting sleeve part (32), the small connecting sleeve part (32) is sleeved on the needle head connecting part (22), the front end of the small connecting sleeve part (32) is positioned behind the front end of the needle head connecting part (22), a connecting external thread (321) is arranged on the small connecting sleeve part (32), the large connecting sleeve part (31) is sleeved on the pen body main body (21), and the connecting sleeve (3) can rotate and is limited in axial movement; the needle (1) comprises a needle cover (11), the needle cover (11) comprises a needle cover front section (111) and a needle cover rear section (112), a guide convex strip (1111) is arranged on the needle cover front section (111), and a connecting internal thread (1121) is arranged on the needle cover rear section (112); needle cover anterior segment (111) suit is on needle connecting portion (22), and direction sand grip (1111) and guide way (221) cooperation, and needle cover back end (112) are connected through connecting internal thread (1121) and connecting external screw thread (321) with adapter sleeve little portion (32).

2. The insulin pen of claim 1, which is characterized in that: the length of the needle sleeve rear section (112) is smaller than the distance between the front end of the connecting sleeve small part (32) and the front end of the needle connecting part (22).

3. The insulin pen of claim 1, which is characterized in that: a sealing gasket (113) is arranged in the front section (111) of the needle cover, and the sealing gasket (113) is attached to the front end face of the needle connecting part (22).

4. The insulin pen of claim 1, which is characterized in that: a limiting flange (211) is arranged on the pen body main body (21), a limiting groove (311) is arranged on the connecting sleeve large part (31), and the limiting flange (211) is matched with the limiting groove (311).

5. The insulin pen of claim 4, which is characterized in that: the connecting sleeve large part (31) comprises a connecting sleeve large part A (312) and a connecting sleeve large part B (313), the connecting sleeve large part A (312) and the connecting sleeve large part B (313) are in threaded connection, and a limiting flange (211) is formed between the connecting sleeve large part A and the connecting sleeve large part B.

Images