WO2020103626A1

WO2020103626A1 - Injection pen

Info

Publication number: WO2020103626A1
Application number: PCT/CN2019/112231
Authority: WO
Inventors: 阮立昂
Original assignee: 阮立昂
Priority date: 2018-11-19
Filing date: 2019-10-21
Publication date: 2020-05-28
Also published as: TWI726301B; CN109331293B; CN109331293A; TW202019504A

Abstract

An injection pen, comprising an injection pen cover (1) and an injection pen body; the injection pen cover (1) is provided thereon with a display window (111), and the injection pen cover (1) is internally provided with a pushing member (2), a rotating member (3) and an elastic member (4); the pushing member (2) is slidably disposed inside of the injection pen cover (1), and the rotating member (3) abuts against the pushing member (2); the rotating member (3) is provided thereon with a prompt mark used for displaying at the display window (111), the prompt mark reminding a patient to carry out daily injection and preventing repeated injection, while also prompting a body position for a next injection using the injection pen; an end of the elastic member (4) abuts against the rotating member (3), while the other end abuts against a top end of the injection pen cover (1); when the injection pen body extends into or projects out from the injection pen cover (1), the injection pen body is configured to push the pushing member (2) so as to drive the rotating member (3) to move, rotate and compress the elastic member (4); when the injection pen body projects out from the injection pen cover (1), the elastic member (4) is configured to drive the rotating member (3) and the pushing member (2) to move in opposite directions so that the rotating member (3) rotates.

Description

Injection pen

This application requires the priority of the Chinese patent application filed on November 19, 2018, with the application number 201811378859.0, and the entire contents of this application are incorporated by reference in this application.

Technical field

This application relates to the technical field of medical drug delivery devices, for example, to an injection pen.

Background technique

Chronic diseases are spreading and developing rapidly around the world. Medical staff and patients who inject drugs at home often use injection pens to inject drugs to achieve the purpose of treating chronic diseases. Injection pen drug therapy can be divided into diabetes treatment, growth hormone treatment, osteoporosis treatment, fertility and other treatments. These diseases may require medical staff or patients to inject drugs regularly. The injected drugs can enter different parts of the body every day, such as insulin dose injections, a reusable injection pen for daily insulin injections, by manually turning the knob And observe the indicator at the display window of the injection pen to select the insulin dose, and when the medicine in the medicine reservoir of the injection pen is used up, the injection pen can be discarded. However, this reusable injection pen does not have any reminder function, cannot remind patients to make daily injections, nor can it remind the body position of the injection pen for the next injection.

In the related art, there are also some different types of electronic accessories that can realize some reminder functions.

For example, an electronic accessory of an injection pen can work like a timer to measure the time since the last injection, but the disadvantage is that the electronic accessory is separated from the injection pen, it is inconvenient to use, and the injection pen cannot be stored in a humid environment Medium, otherwise it is easy to cause electronic accessories to get wet and not work properly and be easily corroded.

As another example, there is also an insulin injection pen with a smart replacement cap. When the smart replacement cap is removed from the injection pen, a timer is activated and the elapsed time since the last injection is displayed, but this smart replacement The service life of the cap is 12 months, the life is short and the price is high, and the smart replacement cap is also susceptible to moisture and corrosion.

As another example, there is a smart insulin pen cap that can measure the volume of insulin in the injection pen and record the injection time. The pen cap is more like a diabetes management system, which is connected with a smartphone system to provide a complete history of past injection dose and time Record and remind the patient when taking a dose, but the pen cap requires more program setting work when it is used, and it is a complex system that uses optical detection for dose measurement, and also cannot be used in high humidity and high temperature environments. Disinfection is not easy, and complexity and cost are high.

Summary of the invention

Based on the above, the present application provides an injection pen. The injection pen cover on the injection pen can be used in a high humidity and high temperature environment, is easy to disinfect, simple to use, and has low cost. To the right body part.

An injection pen includes an injection pen cover and an injection pen body. The injection pen cover is provided with a display window. The injection pen cover is provided with a pushing member, a rotating member and an elastic member. The inside of the injection pen cover; the rotating member is in contact with the pushing member, a prompt mark is provided on the rotating member; one end of the elastic member is in contact with the rotating member, and the other end is in contact with the top of the injection pen cover Contact; when the injection pen body extends into the injection pen cover, the injection pen body is configured to push the pushing member to drive the rotating member to move, rotate and compress the elastic member; when When the injection pen body comes out of the injection pen cover, the elastic member is configured to drive the rotating member and the pushing member to move in opposite directions, so that the rotating member rotates again.

The injection pen cover includes a plurality of limiting members circumferentially disposed inside the injection pen cover, a guide groove is formed between two adjacent limiting members, and the pushing member is slidingly engaged with the guide groove, A guide inclined surface is provided at an end of each limiting member close to the rotating member, and the rotating member cooperates with the guide inclined surface to rotate the rotating member.

A plurality of the guide inclined surfaces are provided on an end of each of the limiting members close to the rotating member, and the plurality of guide inclined surfaces are arranged in a step shape.

The inclination direction and the inclination angle of the plurality of guide slopes are the same.

A plurality of guide members are evenly arranged at an end of the pushing member close to the rotating member, and each of the guide members is provided with a guide inclined surface, and the rotating member cooperates with the guide inclined surface to make the rotating member follow The guide slope moves and rotates.

Each of the guides is provided with a plurality of guide slopes, and the plurality of guide slopes are arranged in a stepped manner.

A plurality of the guide slopes have the same inclination direction and inclination angle.

A plurality of sliding blocks are provided in the circumferential direction of the pushing member, and the sliding blocks slide along the guide groove.

The rotating member includes a rotating body and a rotating block. One end of the rotating block is connected to the rotating body, and the other end is provided with a rotating inclined surface. The rotating inclined surface is configured to be movable along the guide inclined surface so that the The rotating member rotates and extends into the guide groove.

The rotation inclined surface can press against at least one of the guide inclined surface and the guide inclined surface.

When the rotation inclined surface moves along the guide inclined surface, the rotation inclined surface is in contact with the guide inclined surface.

When the rotary inclined surface moves along the guide inclined surface and the guide inclined surface, the rotary inclined surface and the guide inclined surface and the guide inclined surface are all fitted.

The prompt mark includes a first type of prompt mark and a second type of prompt mark provided on the outer peripheral surface of the rotating body. When the injection pen body comes out of the injection pen cover, the rotating body moves and the The display window is set to display the first type of prompt mark, and when the injection pen body extends into the injection pen cover, the rotating body moves again and the display window is set to display the second type of prompt mark .

A supporting post is provided at an end of the rotating member away from the pushing member, and the elastic member is sleeved on the outside of the supporting post.

A supporting boss is provided at an end of the limiting member away from the rotating member, and the supporting boss is configured to support and limit the pushing member.

The injection pen cover further includes an upper cover, the upper cover is installed at a top end of the injection pen cover, and the elastic member is in contact with the upper cover.

The upper cover is provided with a support cylinder, one end of the support cylinder is connected to the top wall of the upper cover, the other end extends into the injection pen cover, and the elastic member sleeved on the outside of the support column Set in the support cylinder.

A guide plate is provided at an end of each of the limiting members away from the rotating member, one end of the guide plate is connected to the limiting member, and the other end is inclined toward the inner wall of the injection pen cover.

The internal thread on the limiting member is the same as the internal thread of the injection needle body of the injection pen body.

The injection pen cover of the injection pen of the present application is provided with a display window. By driving the injection pen cover into or removing the body of the injection pen, the rotating member is driven to rotate, so that the prompt mark on the rotating member is displayed on the display window. The function of reminding patients that they need different information about injecting drugs. . The internal structure of the injection pen cover is all mechanical parts, which is not easy to corrode and can be placed in various environments. It can also be used for higher temperature or steam sterilization; the injection pen cover can remind the patient by installing or removing the injection pen body The function of information is simple to operate, it can be used without learning, and it is more convenient for older patients; the production cost of the injection pen cap is low, the price is cheap, and it can be used as a disposable device.

BRIEF DESCRIPTION

FIG. 1 is an exploded view of an injection pen provided by an embodiment of the present application after removing the body of the injection pen;

2 is a schematic diagram of an internal structure of an injection pen cover provided by an embodiment of the present application;

3 is a schematic structural diagram of a pushing member provided by an embodiment of the present application;

4 is a schematic structural diagram of a rotating member provided by an embodiment of the present application;

5 is a schematic structural diagram of an upper cover provided by an embodiment of the present application.

In the picture:

1- injection pen cover; 11- first housing; 111- display window; 112- stopper; 1121- guide slope; 113- guide groove; 114- support boss; 115- guide plate; 12- second shell Body; 13-third shell; 14-pen holder; 15-ball holder;

2- pusher; 21-triangular block; 211-guide slope; 22-push plug plate; 23-slide block; 24-push plug support column;

3-rotating part; 31-rotating body; 32-rotating block; 321-rotating inclined plane; 33-supporting column;

4-Elastic parts;

5- Upper cover; 51- Support cylinder.

detailed description

The technical solution of the present application will be described in detail below with reference to the drawings and specific embodiments.

As shown in FIG. 1, this embodiment provides an injection pen including an injection pen body, an injection pen cover 1, a pushing member 2, a rotating member 3, an elastic member 4 and an upper cover 5. The injection pen cover 1 is provided with a display window 111, The pushing member 2, the rotating member 3, and the elastic member 4 are all provided in the injection pen cover 1, the pushing member 2 is slidably disposed inside the injection pen cover 1, the rotating member 3 is in contact with the pushing member 2, and the rotating member 3 is provided with a prompt mark The reminder mark can use text or pictures, etc. The reminder mark can be used to remind the time and location of the injection or not. One end of the elastic member 4 is in contact with the rotating member 3, and the other end is in contact with the top end of the upper cover 5 of the injection pen. When the injection pen body extends into the injection pen cover 1, the injection pen body pushes the pushing member 2 to drive the rotating member 3 to move, rotate and compress the elastic member 4; when the injection pen body comes out of the injection pen cover 1, the elastic member 4 drives The rotating member 3 and the pushing member 2 move in opposite directions. The rotating member 3 cooperates with the inclined surface inside the pushing member 2 and the injection pen cover 1 to rotate the rotating member 3 and display a prompt mark on the display window 111. In this embodiment, the action of removing or inserting the injection pen body into the injection pen cover 1 is used to realize the movement and rotation of the rotating member 3, so that the prompt mark on the rotating member 3 is displayed in the display window 111 of the injection pen cover 1 to remind The time and location of the patient's injection.

As shown in FIG. 2, in this embodiment, the injection pen is an insulin injection pen, and the injection pen cover 1 includes a first casing 11, a second casing 12 and a third casing 13, and the first casing 11 is cylindrical The display window 111 is provided on the first housing 11, and the pushing member 2, the rotating member 3 and the elastic member 4 are all disposed inside the first housing 11. The second casing 12 is cylindrical, and the diameter of the second casing 12 is larger than the diameter of the first casing 11. One end of the third housing 13 is connected to the first housing 11 and the other end is connected to the second housing 12. In this embodiment, the injection end of the injection pen body enters from the second casing 12 and extends through the third casing 13 into the first casing 11. The injection pen cover 1 covers the front end of the injection pen body and can maintain the injection The pen body is clean and free from contamination. In other embodiments, the diameter of the second housing 12 may also be less than or equal to the diameter of the first housing 11, which is set according to specific use requirements. The injection pen cover 1 may also have a structure of other shapes, for example, a rectangular parallelepiped shape, and the specific structure of the injection pen cover 1 may be set according to usage requirements.

Further, a plurality of limiting members 112 are circumferentially arranged inside the first housing 11, and a guide groove 113 is formed between two adjacent limiting members 112, and the end of each limiting member 112 near the rotating member 3 is provided with a guide In the inclined surface 1121, the inclined directions of the plurality of guide inclined surfaces 1121 are the same.

In this embodiment, insulin is injected once a day, with a cycle of seven days a week, and the rotating member 3 rotates 360 ° to display seven injection times. Seven limiting members 112 are evenly spaced in the inner circumferential direction of the first housing 11, the angle between the guide slope 1121 and the vertical plane is 45 °, the inclination directions of the seven guide slopes 1121 are the same, and the rotating member 3 is along the guide slope 1121 motion. A supporting boss 114 is provided at the bottom of each limiting member 112, and the supporting boss 114 protrudes toward the center of the first housing 11. The supporting boss 114 is configured to support and limit the pushing member 2. Specifically, the pushing member 2 moves along the guide groove 113, and when the pushing member 2 contacts the supporting boss 114, the supporting boss 114 stops the pushing member 2.

Further, according to the situation of the patient injecting insulin multiple times a day, each end piece 112 is provided with a plurality of guide slopes 1121 near the end of the rotation piece 3, the plurality of guide slopes 1121 are arranged in a step shape, and the rotation piece 3 follows one at a time A guide slope 1121 on the limiting member 112 moves, which represents that insulin has been injected once in the same day. In other embodiments, the number of the limiting members 112 circumferentially provided inside the first housing 11 is set according to specific usage conditions.

Further, the limiting member 112 is provided with an internal thread, the internal thread is located below the support boss 114, and the internal thread is used to connect the injection pen body. A guide plate 115 is provided at the bottom of the limiter 112, and one end of the guide plate 115 is connected to the bottom end of the limiter 112, and the other end is inclined toward the inner wall of the first housing 11, when the injection pen body extends into the injection pen cover 1 The guide plate 115 guides the injection pen body into and connects to the internal thread. In this embodiment, since the injection needle and the injection pen body are connected by a thread, the internal thread on the stopper 112 is the same as the internal thread on the injection needle connected to the injection pen body, and the disposable injection needle used in the injection pen body with a different structure It is the same. After the medicine on the injection pen body is used up, the injection pen cover 1 can be installed on other injection pen bodies. Therefore, the injection pen cover 1 in this embodiment can be adapted to different types of injection pen bodies. It has universal applicability. In other embodiments, the injection pen cover 1 and the injection pen body may also use a snap connection.

Further, a pen holder 14 is provided on the first casing 11, one end of the pen holder 14 is connected to the outer circumferential surface of the first casing 11, the other end extends toward the second casing 12, and the other end of the pen holder 14 faces A ball 15 is provided on one side of the injection pen cover 1. In other embodiments, one end of the pen holder 14 may be connected to the structure of the upper cover 5, the other end extends toward the first housing 11, and the other end of the pen holder 14 facing the injection pen cover 1 is provided with a clamping ball 15. The pen holder 14 and the clip ball 15 on the injection pen cover 1 can firmly fix the injection pen to other structures.

As shown in FIG. 3, the pushing member 2 includes a pushing plug plate 22. The pushing plug plate 22 is a cylindrical plate. The pushing plug plate 22 is placed on the support boss 114. The support boss 114 can support the push member 2 and the push member 2 has a limiting effect, that is, when the pushing plug 22 contacts the support boss 114, the pushing member 2 stops moving downward. The pushing plug 22 is provided with a plurality of guides in the circumferential direction, and the number of the guides is the same as the number of the limiters 112. Each guide is provided with a guide inclined surface 211, and the rotating member 3 cooperates with the guide inclined surface 211 to The rotating member 3 is moved along the guide slope 211. Specifically, seven guides are provided in this embodiment. Preferably, the guides are triangular blocks 21, and the height direction of the triangular blocks 21 is perpendicular to the end surface of the pushing plug 22, and the seven triangular blocks 21 are uniformly and continuously arranged in the circumferential direction . The diameter of the circle on the outer surface of the triangular block 21 is equal to the diameter of the pushing plug 22, and the diameter of the circle on the outer surface of the triangular block 21 is smaller than the diameter of the circle on the inner surface of the stopper 112. Preferably, the triangular block 21 is an isosceles triangular block, the inclined downward slope of the triangular block 21 is the guide slope 211, the slope angle of the guide slope 211 is the same as the slope angle of the guide slope 1121, and the rotating member 3 moves along the guide slope 211 Then move along the guide slope 1121. In other embodiments, each guide is provided with a plurality of guide slopes 211, and the plurality of guide slopes 211 are arranged in a stepped manner, and the number of the guide slopes 211 on each guide and the guide on each stop 112 The number of slopes 1121 is the same. The guide can also be other structures, for example, the triangular block 21 is a non-isosceles triangle, and the number of guides is set according to the requirements of use.

Further, seven sliding blocks 23 are evenly spaced on the circumferential surface of the guide, one end of the sliding block 23 is connected to the outer surface of the pushing plug plate 22 at the bottom of the triangular block 21, and the other end is suspended toward the side away from the top of the triangular block 21 The sliding block 23 is installed in the guide groove 113, and the sliding block 23 can move along the guide groove 113. The push plug plate 22 is provided with a push plug support post 24 on the side away from the rotating member 3. When the push plug plate 22 is placed on the support boss 114, the push plug support post 24 passes through the middle of the seven support bosses 114 . When the injection pen body is inserted into the injection pen cover 1, the injection pen body contacts the push plug support post 24 and pushes the push plug support post 24 upward, thereby driving the rotating member 3 to move upward.

As shown in FIG. 4, the rotating member 3 includes a rotating body 31 and a rotating block 32 provided on the rotating body 31. The rotating body 31 is cylindrical, the number of the rotating blocks 32 is seven, and the seven rotating blocks 32 are along the rotating body 31 is set at even intervals in the circumferential direction. The outer diameter of the rotating block 32 is not greater than the outer diameter of the limiter 112, and the inner diameter of the rotating block 32 is smaller than the outer diameter of the guide, and the outer diameter of the guide is smaller than the inner diameter of the limiter;

One end of the rotating block 32 is connected to the end surface of the rotating body 31, and the other end is provided with a rotating inclined surface 321. When the rotating block 32 slides in the guide groove 113, the rotating inclined surface 321 contacts the guide inclined surface 211 and moves along the guide inclined surface 211 And rotate, when the rotating block 32 slides out of the guide groove 113, the rotating inclined surface 321 can simultaneously contact the guide inclined surface 211 and the guide inclined surface 1121, when the rotating inclined surface 321 enters the adjacent guide groove 113 along the guide inclined surface 1121, the rotating body 3 spins.

In this embodiment, the rotation inclined surface 321 and the guide inclined surface 1121 are complementary surfaces, and the rotation inclined surface 321 and the guide inclined surface 211 are complementary surfaces. The rotation inclined surface 321 cooperates with the guide inclined surface 211 and the guide inclined surface 1121, so that the rotary block 32 enters into the other guide groove 113 from one guide groove 113 to realize the rotation of the rotating member 3.

Further, the outer peripheral surface of the rotating body 31 is provided with first-type prompt marks and second-type prompt marks, the first-type prompt marks include seven display signals from green Monday to Sunday, and the second-type prompt marks include red weekdays Seven display signals from Monday to Sunday. When the injection pen body comes out of the injection pen cover 1, the display window 111 displays a first type of prompt mark, indicating that no medicine has been injected that day. When the injection pen body extends into the injection pen cover 1, the display window 111 displays a second type of prompt mark, Indicates that the drug has been injected that day. When the rotating member 3 rotates in the circumferential direction, the display window 111 sequentially displays Monday to Sunday, which can remind the patient to inject medicine every day to prevent the phenomenon of missed or overdosed medicine. In other embodiments, the first type of prompt mark and the second type of prompt mark are set according to the information that the patient needs to remind.

Further, a supporting post 33 is provided on the end surface of the rotating body 31 away from the rotating block 32, the supporting post 33 is disposed at the center of the rotating body 33, and the elastic member 4 is mounted on the supporting post 33. In this embodiment, the elastic member 4 is a spring, and the spring is sleeved on the support post 33.

As shown in FIG. 5, the injection pen further includes an upper cover 5. The upper cover 5 is buckled on an end of the first housing 11 away from the third housing 13. In this embodiment, the upper cover 5 and the first housing 11 are connected by screws. The upper cover 5 is provided with a support cylinder 51, one end of the support cylinder 51 is connected to the top wall of the upper cover 5, the other end extends into the interior of the first housing 11, the spring and the support post 33 are both installed in the support cylinder 51, and The spring is in contact with the top wall of the upper cover 5. The upper cover 5 can be easily and quickly detached from the injection pen cover 1 to facilitate replacement and maintenance of the components inside the injection pen cover 1. In other embodiments, the upper cover 5 may also be connected to the first housing 11 by other connection methods.

In this embodiment, an installation process of the injection pen cover 1 is as follows:

As shown in FIGS. 1 to 5, the pushing member 2, the rotating member 3 and the spring are sequentially installed into the inside of the injection pen cover 1 from the top of the first housing 11. The sliding block 23 of the pushing member 2 is installed in the guide groove 113 inside the injection pen cover 1, while pushing the plug plate 22 into contact with the support boss 114 to prevent the pushing member 2 from continuing to move downward. The rotating block 32 of the rotating member 3 is placed in the guide groove 113, and the lower half of the rotating inclined surface 321 of the rotating block 32 is in contact with the upper half of the guiding inclined surface 211 of the triangular block 21, and the vertex position of the triangular block 21 is lower than the guide At the lowest point of the inclined surface 1121, the first prompt mark on the rotating body 31 is displayed in the display window 111. The spring is sleeved on the support post 33 of the rotating member 3, the upper cover 5 is installed on the top of the first housing 11, the support tube 51 extends into the interior of the first housing 11, and the spring and the support post 33 are located on the support tube 51 In the lumen.

In this embodiment, the patient is injected with insulin every day as an example. The function of the injection pen cover 1 is to remind the patient to inject insulin every day and prevent the patient from injecting multiple times a day. There are seven days in a week, so the rotating piece 3 rotates 360 ° to display seven days in sequence. In this embodiment, the number of the limiting member 112 inside the injection pen cover 1, the triangular block 21 and the sliding block 23 of the pushing member 2, and the rotating block 32 of the rotating member 3 are all set to seven. The first type of prompt on the rotating body 31 is marked as green Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday, and the second type of prompt is marked as red Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday .

Specifically, after the patient injects insulin on Monday, the injection needle is removed, and then the injection pen cover 1 is installed on the injection pen body, the injection pen body pushes the pusher 2 and the pusher plug supporting post 24 moves upward, the pusher 2 Move along the guide groove 113 and drive the rotating member 3 to move the compression spring upward, the spring is in a compressed state, at this time, the guide slope 211 is higher than the guide slope 1121, the rotation slope 321 of the rotation block 32 abuts on the guide slope of the triangular block 21 At the bottom of 211, the red Monday on the rotating body 31 is displayed in the display window 111. When the patient sees a red Monday from the display window 111 of the injection pen cover 1, he knows that insulin has been injected on Monday. When the injection pen cover 1 is removed from the injection pen body, the rotating member 3 and the pushing member 2 are moved downward by the elastic force of the spring, and when the pushing member 2 moves down to the guide slope 211 and the limiter 112 are at the same When it is flat, the rotary inclined surface 321 is in contact with the guide inclined surface 211 and the guide inclined surface 1121 of the stopper 112 at the same time. When the guide slope 211 is lower than the guide slope 1121, the rotation slope 321 and the guide slope 1121 are attached and moved along the guide slope 1121. The rotation slope 321 moves along the guide slope 1121 and rotates to make the rotating block 32 enter the adjacent another One guide groove 113 realizes the rotation of the rotating member 3. The rotating member 3 drives the pushing member 2 to move downward along the guide groove 113 until the pushing plug 22 abuts on the support boss 114, the rotating member 3 and the pushing member 2 stop moving, and the spring returns to a natural straight state. At this time, the green Tuesday on the rotating body 31 is displayed in the display window to remind the patient that insulin is needed on Tuesday. The patient installs a new injection needle on the injection pen body to inject insulin. This process is repeated every day thereafter, and when the rotating member 3 rotates 360 °, the time passes by one week. When a patient forgets whether he has injected insulin within a day, he can always look at the reminder mark on the injection pen. If the red is displayed the day before, it means that the insulin has not been injected today. If the red is displayed today, it means that the insulin has been injected today. In this way, the patient is reminded whether to inject insulin on the same day. The injection pen cover 1 is connected to the injection pen body by a screw thread. The internal thread under the stopper 112 of the injection pen cover 1 is the same as the internal thread of the injection needle, and can be adapted to different types of main equipment bodies, and has wide practicality.

In other embodiments, the injection pen cover 1 can set the internal structure as needed to remind the patient of different information, for example, the patient needs to inject three times a day, that is, in the morning, noon, and night all need to inject medicine, and one week needs to inject medicine Twenty-one times. The injection pen cover 1 is provided with seven limiters 112 inside, and the end of each limiter 112 is provided with three guide slopes 1121, the three guide slopes 1121 are arranged in a stepped manner, and each triangle block 21 is provided with three guide slopes In 211, the three guide slopes 211 are provided in a stepped shape, and the slope direction and slope angle of the guide slope 211 are the same as the slope direction and slope angle of the guide slope 1121. The first type of reminder mark on the rotating body 31 is set to green Monday morning, middle Monday, and Monday evening according to the design position until Sunday morning, midday, and Sunday evening, and the second type of reminder mark is set to red Monday Morning, mid-Monday, Monday evening, etc. until Sunday early, mid-Sunday, Sunday evening. After the patient injects insulin on Monday morning, the injection needle is removed, and then the injection pen cap 1 is installed on the injection pen body, the red on the rotating body 31 is displayed in the display window 111 on Monday morning. The patient sees the red color in the display window 111 of the injection pen cover 1 on Monday morning, and knows that insulin has been injected on Monday morning. When the injection pen cover 1 is removed from the injection pen body, the rotary member 3 is pushed downward by the spring elastic force, and the rotary inclined surface 321 is in contact with the guide inclined surface 211 and the guide inclined surface 1121 of the stopper 112 at the same time, and the rotary inclined surface 321 It moves along the first guide slope 1121 of the stopper 112, and stops moving when the rotating block 32 contacts the first step. The rotating member 3 has been rotated through a certain angle. At this time, the green Monday on the rotating body 31 is displayed in the display window 111 to remind the patient that insulin is required on Monday at noon. The patient installs a new injection needle on the injection pen body and performs Insulin injection. The rotating member 3 rotates 360 ° to display twenty-one reminder marks to remind the patient to inject medicine.

In other embodiments, the injection pen cover 1 can also be used to remind the patient of the location of the last injection of medicine and suggest the location of the next injection. For example, the display window 111 displays six different body injection sites, namely, two different positions of the left and right arms and the abdomen, and the left and right legs. There are six limiters 112 inside the injection pen cover 1, the number of the triangular block 21 and the rotating block 32 are six, using the same working principle, to remind the patient to inject medicine in different parts, to avoid repeated injections at the same position of the body The drug causes fat and scar tissue to accumulate, resulting in fat enlargement.

The injection pen provided in the above embodiment can also be used in a medical drug delivery device, the injection pen body is a medicine storage box, and the injection pen cover 1 is a box cover. When the medicine storage box is drawn out and inserted from the lid, the injection pen cover 1 can realize the function of reminding the patient to take medicine every day.

The injection pen cover 1 can promptly remind the patient of the date of insulin injection, ensure that the patient injects insulin every day, and prevent the patient from repeating the injection or less injection due to forgetting to inject the drug. In addition, the internal parts of the injection pen cover 1 are all mechanical parts, which can be placed in various environments and can be used for higher temperature or steam sterilization. It is easy to sterilize; the injection pen cover 1 is loaded or removed from the injection pen body It realizes the function of reminding the patient information. The operation is simple and can be used without learning, which is more convenient for older patients. The injection pen cover 1 has low production cost and low price, and can be used as a device to be discarded at any time.

Claims

An injection pen includes an injection pen cover (1) and an injection pen body, wherein the injection pen cover (1) is provided with a display window (111), and the injection pen cover (1) is provided with:

A pushing member (2), which is slidingly arranged inside the injection pen cover (1);

A rotating member (3), which is in contact with the pushing member (2), and a prompt mark for displaying at the display window (111) is provided on the rotating member (3);

An elastic member (4), one end of which is in contact with the rotating member (3), and the other end is in contact with the top of the injection pen cover (1);

Wherein, when the injection pen body extends into the injection pen cover (1), the injection pen body is configured to push the pushing member (2) to drive the rotating member (3) to move, rotate and Compress the elastic member (4); when the injection pen body comes out of the injection pen cover (1), the elastic member (4) is configured to drive the rotating member (3) and the pushing member (2) ) Move in the opposite direction to rotate the rotating member (3) again.
The injection pen according to claim 1, wherein the injection pen cover (1) includes a plurality of stoppers (112) circumferentially disposed inside the injection pen cover (1), two adjacent A guide groove (113) is formed between the limiting pieces (112), the pushing piece (2) is slidingly engaged with the guide groove (113), and the upper end of each limiting piece (112) is provided with a guiding slope (1121) , The rotating member (3) cooperates with the guide inclined surface (1121) to rotate the rotating member (3).
The injection pen according to claim 2, wherein a plurality of the guide slopes (1121) are provided on the upper end of each of the limiting members (112), and the plurality of guide slopes (1121) are provided in a stepped shape.
The injection pen according to claim 2 or 3, wherein the inclination direction and the inclination angle of the plurality of guide slopes (1121) are the same.
The injection pen according to claim 2 or 3, wherein the pushing member (2) is provided with a plurality of guide members uniformly at an end close to the rotating member (3), and each of the guide members is provided with a guide slope (211), the rotating member (3) cooperates with the guide inclined surface (211), so that the rotating member (3) moves and rotates along the guide inclined surface (211).
The injection pen according to claim 5, wherein each of the guides is provided with a plurality of the guide slopes (211), and the plurality of the guide slopes (211) are arranged in a step shape.
The injection pen according to claim 5 or 6, wherein the inclination direction and the inclination angle of the plurality of guide slopes (211) are the same.
The injection pen according to claim 2, wherein a plurality of sliding blocks (23) are provided in the circumferential direction of the pushing member (2), and the sliding blocks (23) slide along the guide groove (113).
The injection pen according to claim 2, 5, 6 or 7, wherein the rotating member (3) includes a rotating body (31) and a rotating block (32), one end of the rotating block (32) is connected to the On the rotating body (31), the other end is provided with a rotating inclined surface (321), the rotating inclined surface (321) is arranged to move along the guide inclined surface (1121), so that the rotating member (3) rotates and extends into Adjacent to the guide groove (113).
The injection pen according to claim 9, wherein the rotary inclined surface (321) can press against at least one of the guide inclined surface (211) and the guide inclined surface (1121).
The injection pen according to claim 10, wherein when the rotary inclined surface (321) moves along the guide inclined surface (1121), the rotary inclined surface (321) is in contact with the guide inclined surface (1121).
The injection pen according to claim 10, wherein when the rotary inclined surface (321) moves along the guide inclined surface (211), the rotary inclined surface (321) is in contact with the guide inclined surface (211).
The injection pen according to claim 10, wherein when the rotary inclined surface (321) moves along the guide inclined surface (1121) and the guide inclined surface (211), the rotary inclined surface (321) and the guide inclined surface (1121) and the guide inclined surface (211) are all fitted together.
The injection pen according to claim 1, wherein the prompt mark includes a first type of prompt mark and a second type of prompt mark provided on the outer peripheral surface of the rotating member (3), and when the injection pen body When the injection pen cover (1) is taken out, the display window (111) is set to display the first type of prompt mark. When the injection pen body extends into the injection pen cover (1), the The display window (111) is set to display the second type of prompt mark.
The injection pen according to claim 9, wherein a support post (33) is provided at an end of the rotating member (3) away from the pushing member (2), and the elastic member (4) is sleeved on the support The outside of the column (33).
The injection pen according to claim 2, wherein a support boss (114) is provided at an end of the stopper (112) away from the guide slope (1121), the support boss (114) is provided To support and limit the pushing member (2).
The injection pen according to claim 1 or 15, wherein the injection pen cover (1) further comprises an upper cover (5), the upper cover (5) is mounted on the top end of the injection pen cover (1), The elastic member (4) is in contact with the upper cover (5).
The injection pen according to claim 17, wherein a support cylinder (51) is provided in the upper cover (5), and one end of the support cylinder (51) is connected to the top wall of the upper cover (5) , The other end extends into the inside of the injection pen cover (1), and the elastic member (4) sleeved on the outside of the support post (33) is disposed in the support cylinder (51).
The injection pen according to claim 2, wherein each end of the limiting member (112) away from the rotating member (3) is provided with a guide plate (115), and one end of the guide plate (115) Connected with the limiting member (112), the other end is inclined toward the inner wall of the injection pen cover (1).
The injection pen according to claim 2, wherein the internal thread on the stopper (112) is the same as the internal thread of the injection needle of the injection pen body.