CN216319288U

CN216319288U - Prevent insulin pen needle of stabbing

Info

Publication number: CN216319288U
Application number: CN202122707367.5U
Authority: CN
Inventors: 刘艳; 何洁; 赖李梅; 郑桂兰; 张米兰
Original assignee: Rongxian People's Hospital
Current assignee: Rongxian People's Hospital
Priority date: 2021-11-07
Filing date: 2021-11-07
Publication date: 2022-04-19
Anticipated expiration: 2031-11-07

Abstract

The utility model provides an anti-stab insulin pen needle, which comprises a needle head and a needle cylinder, wherein the front end and the rear end of the needle cylinder are respectively provided with a first sliding cavity and a second sliding cavity, and a guide ring is fixedly arranged between the first sliding cavity and the second sliding cavity; a protective sleeve is connected in the first sliding cavity in a sliding manner, and a first compression spring is arranged between the protective sleeve and the end face of the guide ring; the second sliding cavity is connected with a fixed plate in a sliding manner, and a second compression spring is arranged between the fixed plate and the guide ring; the injection needle passes through the fixing plate, the guide ring and the protective sleeve and then extends out of the needle head; the needle cylinder is in threaded connection with the inner wall of the second sliding cavity. On the premise of ensuring that the safety protection needle head is provided, the utility model can also adjust the size of the injection needle extending out of the needle head according to the actual situation of a patient, further achieve the purpose of adjusting the depth of the injection needle inserted into the patient and achieve the purpose that insulin can be injected into the subcutaneous fat layer.

Description

Prevent insulin pen needle of stabbing

Technical Field

The utility model relates to the field of injection devices, in particular to an insulin pen needle capable of preventing puncture.

Background

Pen-type injection devices, such as insulin pens and injection needles, have been widely used as a method for treating diabetes. Wherein, the insulin pen carries the liquid medicine of insulin of the prescribed quantity, can be repeatedly used, and the syringe needle is a disposable syringe needle with safety protection device. The Chinese patent publication No. CN10449195B discloses a safety insulin pen needle, which has the advantages that during the insulin injection process, a protector is triggered, and after the injection is finished, the tip of the needle is instantly protected, so that the injury of the needle tip to doctors or patients can be prevented.

For the skin, the subcutaneous fat layer is arranged below the epidermal layer of the skin to the muscle layer, and blood vessels contained in the muscle are richer than subcutaneous fat tissue, so that if the insulin is injected too deeply into the muscle tissue, the insulin can be absorbed and metabolized too fast, and the expected effect of controlling the blood sugar by the insulin can not be achieved; on the other hand, if the insulin injection is too shallow and can not reach the subcutaneous fat layer, the absorption of the patient on the insulin can be influenced, and the insulin can not achieve the effect of controlling the blood sugar; the depth of subcutaneous adipose tissue is also different for the elderly, children, young adults, people with a lean body and people with a fat body.

In the existing safety insulin pen needle, the injection needle is usually fixed on the needle head, and the insertion depth cannot be adjusted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an insulin pen needle capable of preventing puncture, aiming at the defects of the prior art, the size of an injection needle extending out of a needle head can be adjusted according to the actual condition of a patient on the premise of ensuring that the needle head is safely protected, the depth of the injection needle inserted into the patient is further adjusted, and the purpose that insulin can be injected into a subcutaneous fat layer is achieved.

The embodiment of the utility model is realized by the following technical scheme: an insulin pen needle capable of preventing puncture comprises a needle head and a needle cylinder, wherein the front end and the rear end of the needle cylinder are respectively provided with a first sliding cavity and a second sliding cavity, and a guide ring is fixedly arranged between the first sliding cavity and the second sliding cavity; a protective sleeve is connected in the first sliding cavity in a sliding manner, and a first compression spring is arranged between the protective sleeve and the end face of the guide ring; the second sliding cavity is connected with a fixed plate in a sliding manner, and a second compression spring is arranged between the fixed plate and the guide ring; the injection needle passes through the fixing plate, the guide ring and the protective sleeve and then extends out of the needle head; the needle cylinder is in threaded connection with the inner wall of the second sliding cavity.

Furthermore, the needle cylinder is provided with scale marks.

Furthermore, a guide groove is formed in the second sliding cavity, a guide block is fixedly arranged on the side face of the fixing plate, and the guide block is connected with the guide groove in a sliding mode.

Further, the axes of the syringe, the needle head, the fixing plate, the guide ring, the protective sleeve and the injection needle are collinear.

The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:

1. the utility model has reasonable design and simple structure, and the protective sleeve extends out of the needle head under the action of the first compression spring, thereby achieving the purpose of protecting the injection needle;

2. the utility model can push the fixing plate through the syringe, and the injection needle is fixed on the fixing plate, thereby achieving the purpose of adjusting the size of the injection needle extending out of the needle head, further realizing the adjustment of the depth of the injection needle inserted into a patient, and achieving the purpose of injecting insulin into a subcutaneous fat layer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a fixing plate according to the present invention;

icon: 1-a needle head; 11-a first sliding chamber; 110-a first compression spring; 111-a protective sheath; 12-a second sliding chamber; 121-fixing plate; 1210-a guide block; 122-a second compression spring; 123-a guide groove; 2-a needle cylinder; 3-injection needle.

Detailed Description

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the products of the present invention are used, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or element which is referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, an insulin pen needle for preventing puncture comprises a needle head 1 and a syringe 2, wherein a first sliding cavity 11 and a second sliding cavity 12 are respectively arranged at the front end and the rear end of the syringe 2, and a guide ring is fixedly arranged between the first sliding cavity 11 and the second sliding cavity 12 and guides an injection needle 3 to prevent the injection needle 3 from generating position deviation when moving.

In this embodiment, a protective sleeve 111 is slidably connected in the first sliding cavity 11, a first compression spring 110 is arranged between the protective sleeve 111 and the end surface of the guide ring, and the protective sleeve 111 can extend out of the needle 1 under the action of the first compression spring 110, so that the needle 1 is protected.

Further, in this embodiment, the front end of the needle 1 has a limiting ring, which can limit the position of the protective sheath 111, and prevent the protective sheath 111 from being ejected out of the needle 1 completely under the action of the first compression spring 110.

In this embodiment, the fixing plate 121 is slidably connected in the second sliding chamber 12, a second compression spring 122 is disposed between the fixing plate 121 and the guide ring, and the fixing plate 121 can be always abutted against the front end of the needle cylinder 2 by the second compression spring 122; the injection needle 3 is fixed on the fixing plate 121, the injection needle 3 passes through the fixing plate 121, the guide ring and the protective sleeve 111 and then extends out of the needle head 1, and the injection needle 3 on the fixing plate 121 can extend out of the needle head 1 under the pushing of the needle cylinder 2 by the fixing plate 121; the needle cylinder 2 is in threaded connection with the inner wall of the second sliding chamber 12.

Specifically, be equipped with the internal thread on the inner wall of the first sliding chamber 11 body, be provided with the external screw thread on the outer wall of cylinder 2, cylinder 2 and the inner wall threaded connection of second sliding chamber 12.

As shown in fig. 1, in the present embodiment, in order to facilitate the medical staff to know the extending size of the injection needle 3, the needle cylinder 2 is provided with scale marks, and the scale marks are sequentially increased from the front end of the needle cylinder 2 to the rear end of the needle cylinder 2.

Specifically, the foremost end of the needle head 1 is used as a reference line, the rearmost end of the needle head 1 is used as a measuring line, when the foremost end of the injection needle 3 is located at the reference line, the 0-scale position of the scale line is located at the measuring line, and the length of the injection needle 3 extending out of the needle head 1 reflects the length of the syringe 2 entering the first sliding cavity 11.

In this embodiment, since the inner wall of the first sliding chamber 11 is a circular structure, the shape of the fixing plate 121 is also configured to be a circular structure matching with the inner wall of the first sliding chamber 11 to ensure stable sliding, so that the fixing plate 121 is easily pushed to rotate circumferentially, and in order to prevent the fixing plate 121 from rotating circumferentially, a guide groove 123 is provided in the second sliding chamber 12, a guide block 1210 is fixedly provided on a side surface of the fixing plate 121, and the guide block 1210 is slidably connected with the guide groove 123.

In this embodiment, the axes of the syringe 2, needle 1, holding plate 121, guide ring, protective sheath 111 and injection needle 3 are all collinear.

In this embodiment, a working mode of the insulin pen needle for preventing puncture is as follows:

s1: the medical staff judges the position of the subcutaneous fat layer of the patient according to the actual condition of the patient, then the needle head 1 is in threaded connection with the needle cylinder 2, and the size of the needle cylinder 2 extending into the needle head 1 is adjusted, the size is reflected on the scale mark, and the size is matched with the depth of the subcutaneous fat layer of the patient;

s2: when the size of the needle head 1 inserted into the syringe 2 is adjusted by S1, the front end of the syringe 2 pushes the fixing plate 121 to move towards the front end of the needle head 1, so as to drive the injection needle 3 to extend out of the needle head 1 by the corresponding size; the rear end of the injection needle 3 pierces the inside of the cylinder 2 by the second compression spring 122;

s3: under the action of the first compression spring 110, the rear end of the protective sleeve 111 abuts against the limiting ring, and before injection, the injection needle 3 is arranged in the protective sleeve 111; the front end of the protective sheath 111 abuts against the skin surface of the patient injection site, and as the medical staff applies an external force, the protective sheath 111 is gradually retracted to the needle 1, and the first compression spring 110 is compressed to have an elastic force.

S4: after the injection, the protective sheath 111 is extended out of the needle 1 by the first compression spring 110 as the needle 3 is pulled out of the patient's skin, thereby protecting the needle 3.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a prevent insulin pen needle of stabbing which characterized in that: the needle comprises a needle head (1) and a needle cylinder (2), wherein a first sliding cavity (11) and a second sliding cavity (12) are respectively arranged at the front end and the rear end of the needle cylinder (2), and a guide ring is fixedly arranged between the first sliding cavity (11) and the second sliding cavity (12); a protective sleeve (111) is connected in the first sliding cavity (11) in a sliding manner, and a first compression spring (110) is arranged between the protective sleeve (111) and the end face of the guide ring; the second sliding cavity (12) is connected with a fixing plate (121) in a sliding mode, and a second compression spring (122) is arranged between the fixing plate (121) and the guide ring; an injection needle (3) is fixed on the fixing plate (121), and the injection needle (3) passes through the fixing plate (121), the guide ring and the protective sleeve (111) and then extends out of the needle head (1); the needle cylinder (2) is in threaded connection with the inner wall of the second sliding cavity (12).

2. The insulin pen needle of claim 1, which is characterized in that: the needle cylinder (2) is provided with scale marks.

3. The insulin pen needle of claim 1, which is characterized in that: a guide groove (123) is formed in the second sliding cavity (12), a guide block (1210) is fixedly arranged on the side face of the fixing plate (121), and the guide block (1210) is in sliding connection with the guide groove (123).

4. The insulin pen needle of claim 1, which is characterized in that: the axes of the needle cylinder (2), the needle head (1), the fixing plate (121), the guide ring, the protective sleeve (111) and the injection needle (3) are collinear.