CN109331293B

CN109331293B - Injection pen

Info

Publication number: CN109331293B
Application number: CN201811378859.0A
Authority: CN
Inventors: 阮立昂
Original assignee: Dongguan Yancheng Plastic Materials Co ltd
Current assignee: Dongguan Yancheng Plastic Materials Co ltd
Priority date: 2018-11-19
Filing date: 2018-11-19
Publication date: 2021-08-03
Anticipated expiration: 2038-11-19
Also published as: TW202019504A; WO2020103626A1; CN109331293A; TWI726301B

Abstract

The invention relates to the technical field of medical drug delivery devices, and discloses an injection pen. The injection pen comprises an injection pen cap and an injection pen body, wherein a display window is arranged on the injection pen cap, a pushing piece, a rotating piece and an elastic piece are arranged in the injection pen cap, and the pushing piece is arranged in the injection pen cap in a sliding mode; the rotating piece is abutted with the pushing piece, and a prompt mark is arranged on the rotating piece; one end of the elastic part is abutted with the rotating part, and the other end of the elastic part is abutted with the inner wall of the injection pen cap; when the injection pen body extends into or is separated from the injection pen cover, the prompt mark is displayed in the display window. The injection pen cap reminds a patient of different injection information by the action of installing or taking off the injection pen cap from the injection pen body, and the parts in the injection pen cap are all mechanical parts, so that the injection pen cap is not easy to corrode and disinfect, and is simple to operate and low in price.

Description

Injection pen

Technical Field

The invention relates to the technical field of medical drug delivery devices, in particular to an injection pen.

Background

Chronic diseases are spreading and developing rapidly in the world, and medical staff and patients who inject medicines at home often use injection pens to inject medicines to achieve the purpose of treating the chronic diseases. The treatment of injection pen injection drugs can be divided into diabetes treatment, growth hormone treatment, osteoporosis treatment, fertility treatment and other treatments. These conditions may require medical personnel or patients to periodically administer medication, which may be daily into different parts of the body, such as injections of insulin doses, a reusable injection pen for daily insulin injections, the insulin dose being selected by manually turning a knob and viewing an indicator at the display window of the injection pen, and the injection pen may be discarded when the medication in the medication reservoir of the injection pen is depleted. The reusable injection pen does not have any indication of whether a daily injection was made, while the injection pen does not indicate the body location of the next injection. To prevent a patient from missing a daily injection, or to prevent a patient from injecting twice, which could result in overdosing or prevent a patient from repeatedly injecting medication into the same body location, it is desirable to use a device to remind the patient whether to inject, whether to inject as planned, and whether to inject at the same body location.

There are many different types of smart accessories in the prior art that are used to meet the above-mentioned reminder objectives. For example, an electronic accessory for an injection pen, which operates like a timer to measure the time since the last injection, has disadvantages in that the electronic accessory is a separate device from the injection pen, is inconvenient to use, and the injection pen cannot be stored in a humid environment, and the electronic accessory is easily affected with moisture to fail to operate properly and is easily corroded. An intelligent replacement cap for an insulin injection pen activates a timer when the cap is removed from the injection pen and displays the elapsed time since the last injection, but has a service life of 12 months, a short life, a high price, and an electronic device that is susceptible to corrosion by moisture. Another smart insulin pen cap that can replace the existing insulin injection pen cap and measure the volume of insulin in the pen and record the injection time, much like a diabetes management system, is connected to a smart phone system and provides a complete historical record of past injection doses and times and alerts the patient when a dose needs to be taken. However, the pen cap requires more programming work when in use, is a complex system for dose measurement using optical detection, like other accessories equipped with electronic components, cannot be used in high humidity, high temperature environments, is not easily sterilized, is complex and costly and is not suitable for disposal at any time.

Disclosure of Invention

Based on the above, the present invention is directed to an injection pen, wherein a cap of the injection pen can be used in a high humidity and high temperature environment, is easy to sterilize, is easy to use, has a low cost, and can be discarded at any time to remind a patient of injecting a medicine with information.

In order to achieve the purpose, the invention adopts the following technical scheme:

an injection pen comprises an injection pen cap and an injection pen body, wherein a display window is arranged on the injection pen cap, a pushing piece, a rotating piece and an elastic piece are arranged in the injection pen cap, and the pushing piece is arranged in the injection pen cap in a sliding mode; the rotating piece is abutted with the pushing piece, and a prompt mark is arranged on the rotating piece; one end of the elastic part is abutted with the rotating part, and the other end of the elastic part is abutted with the inner wall of the injection pen cap; when the injection pen body extends into the injection pen cap, the injection pen body pushes the pushing piece and the rotating piece to move and compress the elastic piece; when the injection pen body is separated from the injection pen cap, the elastic piece drives the rotating piece and the pushing piece to move in the opposite directions, so that the rotating piece rotates.

As a preferred technical solution of the injection pen, a plurality of limiting members are circumferentially disposed inside the injection pen cap, a guide groove is formed between two adjacent limiting members, the pushing member slides along the guide groove, a guide inclined surface is disposed at one end of each limiting member close to the rotating member, and the rotating member is matched with the guide inclined surface to rotate the rotating member and extend into another guide groove adjacent to the guide groove.

As a preferred technical solution of the injection pen, one end of each of the limiting members, which is close to the rotating member, is provided with a plurality of the guide inclined surfaces, and the plurality of the guide inclined surfaces are arranged in a step shape.

As a preferable technical scheme of the injection pen, the inclination directions of the guide inclined planes are the same.

As a preferable technical scheme of the injection pen, one end of the pushing piece, which is close to the rotating piece, is provided with a plurality of guide pieces, each guide piece is provided with a guide inclined surface, and the rotating piece is matched with the guide inclined surfaces so as to enable the rotating piece to move along the guide inclined surfaces.

As a preferable technical solution of the injection pen, each of the guide members is provided with a plurality of the guide slopes, and the plurality of the guide slopes are arranged in a step shape.

As a preferred technical scheme of the injection pen, a plurality of sliding blocks are arranged in the circumferential direction of the pushing piece, the sliding blocks are installed in the guide grooves, and the sliding blocks can slide along the guide grooves.

As a preferred technical scheme of the injection pen, the rotating part comprises a rotating body and a rotating block, one end of the rotating block is connected to the rotating body, the other end of the rotating block is provided with a rotating inclined surface, and the rotating inclined surface moves along the guide inclined surface so that the rotating part rotates and extends into the guide groove.

As a preferable technical solution of the injection pen, the rotation slope may press the guide slope and the guide slope.

As a preferred technical scheme of the injection pen, when the rotating inclined plane moves along the guide inclined plane, the rotating inclined plane is attached to the guide inclined plane.

As a preferable technical solution of the injection pen, when the rotation inclined plane moves along the guide inclined plane, the rotation inclined plane is attached to the guide inclined plane.

As a preferred technical scheme of the injection pen, when the rotating inclined plane moves along the guide inclined plane and the guide inclined plane, the rotating inclined plane is attached to both the guide inclined plane and the guide inclined plane.

As a preferred technical solution of the injection pen, the indication mark includes a first indication mark and a second indication mark which are arranged on the outer circumferential surface of the rotational body, when the injection pen body is removed from the injection pen cap, the first indication mark is displayed on the display window, and when the injection pen body is inserted into the injection pen cap, the second indication mark is displayed on the display window.

As a preferable technical scheme of the injection pen, one end of the rotating piece, which is far away from the pushing piece, is provided with a supporting upright post, and the elastic piece is sleeved outside the supporting upright post.

As a preferable technical scheme of the injection pen, one end of the limiting part, which is far away from the rotating part, is provided with a supporting boss for supporting the pushing part.

As a preferable technical solution of the injection pen, the injection pen cap further includes an upper cap, the upper cap is buckled at one end of the injection pen cap, and the elastic member abuts against the upper cap.

As a preferred technical scheme of injection pen, the upper cover is provided with a supporting cylinder, one end of the supporting cylinder is connected to the top wall of the upper cover, the other end of the supporting cylinder extends into the injection pen cover, and the elastic piece is arranged in the supporting cylinder.

As an optimal technical scheme of the injection pen, each limiting part is provided with a guide plate, one end of each guide plate is connected to one end of each limiting part far away from the rotating part, and the other end of each guide plate inclines towards the inner wall of the injection pen cap

The invention has the beneficial effects that:

the injection pen cap of the injection pen is provided with the display window, and the rotating piece is driven to rotate by the action of loading or unloading the injection pen cap into or from the injection pen body, so that the prompt mark on the rotating piece is displayed on the display window, and the function of reminding a patient of different information of the medicine to be injected is realized. In addition, when the injection pen body extends into the injection pen cap, the injection pen body pushes the pushing piece and the rotating piece to move and compress the elastic piece; when the injection pen body is separated from the injection pen cap, the elastic piece drives the rotating piece and the pushing piece to move in opposite directions, the rotating piece is matched with the pushing piece and the inclined plane inside the injection pen cap so as to enable the rotating piece to rotate, the part structure inside the injection pen cap is all mechanical parts, is not like an electronic device using a battery and is easy to corrode, can be placed in various environments for use, and can be used for high-temperature or steam disinfection; the injection pen cap realizes the function of reminding the patient of information by installing or taking off the injection pen body, is simple to operate, can be used without learning, and is more convenient for elderly patients to use; the injection pen cap has low production cost and low price, and can be used as a disposable device.

Drawings

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

FIG. 1 is an exploded view of an injection pen provided in accordance with an embodiment of the present invention with the injection pen body removed;

FIG. 2 is a schematic view of the internal structure of the injection pen cap according to the embodiment of the present invention;

FIG. 3 is a schematic structural view of a pusher member provided in accordance with an embodiment of the present invention;

FIG. 4 is a schematic structural view of a rotating member provided in accordance with an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an upper cover according to an embodiment of the present invention.

In the figure:

1-injection pen cap; 11-a first housing; 111-display window; 112-a limit stop; 1121-guide slope; 113-a guide slot; 114-a support boss; 115-a guide plate; 12-a second housing; 13-a third housing; 14-a pen clip; 15-clamping the ball;

2-a pusher; 21-a triangular block; 211-a guide ramp; 22-pushing the plug plate; 23-a slider; 24-push plug support post;

3-a rotating member; 31-a rotating body; 32-a rotating block; 321-a rotating bevel; 33-supporting the upright post;

4-a spring;

5, covering the upper cover; 51-support cylinder.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the present embodiment provides an injection pen, which includes an injection pen body, an injection pen cap 1, a pushing element 2, a rotating element 3, an elastic element, and an upper cap 5, where the injection pen cap 1 is provided with a display window 111, the pushing element 2, the rotating element 3, and the elastic element are all disposed in the injection pen cap 1, the pushing element 2 is slidably disposed inside the injection pen cap 1, the rotating element 3 abuts against the pushing element 2, and the rotating element 3 is provided with a prompt mark, which may be in a form of text or picture, and the prompt mark may be used to prompt time and position of injection or not. One end of the elastic part is abutted with the rotating part 3, and the other end is abutted with the inner wall of the injection pen cap 1. When the injection pen body extends into the injection pen cap 1, the injection pen body pushes the pushing piece 2 and the rotating piece 3 to move and compress the elastic piece; when the injection pen body is separated from the injection pen cap 1, the elastic piece drives the rotating piece 3 and the pushing piece 2 to move in opposite directions, and the rotating piece 3 is matched with the pushing piece 2 and the inclined plane inside the injection pen cap 1, so that the rotating piece 3 rotates, and the prompt mark is displayed on the display window 111. In the embodiment, the injection pen cap 1 is taken out or put in by the injection pen body to realize the movement and rotation of the rotating piece 3, so that the prompt mark on the rotating piece 3 is displayed in the display window 111 of the injection pen cap 1 to remind the patient of the injection time and position.

As shown in fig. 2, the injection pen of the present embodiment is an insulin injection pen, the injection pen cap 1 includes a first housing 11, a second housing 12 and a third housing 13, the first housing 11 is a cylindrical barrel, a display window 111 is disposed on the first housing 11, and the pushing member 2, the rotating member 3 and the elastic member are all disposed inside the first housing 11. The second housing 12 is a cylindrical cylinder, and the diameter of the second housing 12 is larger than that of the first housing 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, passes through the third casing 13 and extends into the first casing 11, and the injection pen cap 1 covers the front end of the injection pen body, so that the injection pen body can be kept clean and free from contamination. In other embodiments, the diameter of the second housing 12 is smaller than or equal to the diameter of the first housing 11, and is set according to specific use requirements. The injection pen cap 1 may also be in other shapes, such as a rectangular parallelepiped, and the specific structure of the injection pen cap 1 may be set according to the use requirement.

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

In this embodiment, insulin is injected once a day, and the cycle is repeated for seven days a week, and the rotary member 3 is rotated 360 ° to display seven injection times. Seven limiting members 112 are circumferentially and uniformly arranged in the first housing 11 at intervals, an included angle between the guide inclined surface 1121 and the vertical plane is 45 °, the inclined directions of the seven guide inclined surfaces 1121 are the same, and the rotating member 3 moves along the guide inclined surface 1121. The bottom of each limiting member 112 is provided with a supporting boss 114, the supporting boss 114 protrudes toward the center of the first housing 11, and the supporting boss 114 is used for supporting the pushing member 2. The pusher 2 moves along the guide groove 113, and when the pusher 2 comes into contact with the support boss 114, the support boss 114 stops the pusher 2. Further, according to the situation that the patient injects insulin multiple times per day, one end of each limiting member 112 close to the rotating member 3 is provided with a plurality of guiding inclined surfaces 1121, the plurality of guiding inclined surfaces 1121 are arranged in a step shape, and the rotating member 3 moves along one guiding inclined surface 1121 on one limiting member 112 each time, which represents that insulin is injected once in the same day. In other embodiments, the number of the limiting members 112 circumferentially arranged inside the first housing 11 is set according to a specific use condition.

Further, an internal thread is provided on the limiting member 112, and the internal thread is located below the supporting boss 114, and the internal thread is used for connecting with the injection pen body. The bottom of the limiting member 112 is provided with a guide plate 115, one end of the guide plate 115 is connected to the bottom end of the limiting member 112, and the other end of the guide plate 115 is inclined towards the inner wall of the first housing 11, when the injection pen body goes deep into the injection pen cap 1, the guide plate 115 guides the injection pen body to enter and connect to the internal thread. In this embodiment, because the injection needle passes through threaded connection with the injection pen body, the internal thread on the locating part 112 is the same with the internal thread on the injection needle of the injection pen body, and the disposable injection needle that the injection pen body of isostructure used is the same, and after the medicine on the injection pen body used up, can install injection pen lid 1 on other injection pen bodies, therefore injection pen lid 1 in this embodiment can the injection pen body of different models of adaptation, has universal applicability. In other embodiments, the injection pen cap 1 and the injection pen body may be mounted by a snap fit.

Further, a pen clip 14 is disposed on the first housing 11, one end of the pen clip 14 is connected to the outer circumferential surface of the first housing 11, the other end extends toward the second housing 12, and a clip ball 15 is disposed at one side of the other end of the pen clip 14 facing the injection pen cover 1. The pen clip 14 and the clip ball 15 on the injection pen cap 1 can firmly fix the injection pen on 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 a supporting boss 114, the supporting boss 114 can support the pushing member 2 and has a limiting effect on the pushing member 2, and when the pushing plug plate 22 contacts the supporting boss 114, the pushing member 2 stops moving downward. A plurality of guide members are circumferentially arranged on the pushing plug plate 22, the number of the guide members is the same as that of the limiting members 112, each guide member is provided with a guide inclined surface 211, and the rotating member 3 is matched with the guide inclined surface 211 so that the rotating member 3 moves along the guide inclined surface 211. Specifically, seven guides are provided in the present embodiment, and preferably, the guides are triangular blocks 21, 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 continuously provided in the circumferential direction. The diameter of the circle on which the outer surface of the triangular block 21 is located is equal to the diameter of the pushing plug plate 22, and the diameter of the circle on which the outer surface of the triangular block 21 is located is smaller than the diameter of the circle on which the inner surface of the limiting member 112 is located. Preferably, the triangular block 21 is an isosceles triangular block, the inclined downward slope of the triangular block 21 is a guide slope 211, the inclined angle of the guide slope 211 is the same as the inclined angle of the guide slope 1121, and the rotation member 3 moves along the guide slope 211 and then moves along the guide slope 1121. In other embodiments, a plurality of guiding inclined surfaces 211 are provided on each guiding member, the plurality of guiding inclined surfaces 211 are arranged in a step shape, and the number of guiding inclined surfaces 211 on each guiding member is the same as the number of guiding inclined surfaces 1121 on each limiting member 112. The guides may also have other configurations, for example, the triangular blocks 21 are not isosceles triangles, and the number of guides is set according to the use requirement.

Furthermore, seven sliding blocks 23 are arranged on the circumferential surface of the guiding piece at uniform intervals, one end of each sliding block 23 is connected to the outer surface of the pushing plug plate 22 at the bottom of the triangular block 21, the other end of each sliding block 23 is suspended towards the side away from the top of the triangular block 21, the sliding blocks 23 are installed in the guiding grooves 113, and the sliding blocks 23 can move along the guiding grooves 113. The side of the push plug plate 22 away from the rotary member 3 is provided with a push plug support column 24, and when the push plug plate 22 is placed on the support bosses 114, the push plug support column 24 passes through the middle of the seven support bosses 114. When the injection pen body is loaded into the injection pen cap 1, the injection pen body contacts with the push plug support column 24 and pushes the push plug support column 24 upwards, so that the rotating member 3 is driven to move upwards.

As shown in fig. 4, the rotary member 3 includes a rotary body 31 and rotary blocks 32 provided on the rotary body 31, the rotary body 31 is a cylindrical cylinder, the number of the rotary blocks 32 is seven, and the seven rotary blocks 32 are provided at regular intervals in the circumferential direction of the rotary body 31. The rotation block 32 has one end connected to the end surface of the rotation body 31 and the other end provided with a rotation inclined surface 321, when the rotation block 32 slides in the guide groove 113, the rotation inclined surface 321 contacts the guide inclined surface 211 and moves along the guide inclined surface 211, when the rotation block 32 slides out of the guide groove 113, the rotation inclined surface 321 can simultaneously contact the guide inclined surface 211 and the guide inclined surface 1121, and the rotation inclined surface 321 enters the adjacent guide groove 113 along the guide inclined surface 1121.

In the present embodiment, the rotating inclined surface 321 and the guiding inclined surface 1121 are complementary surfaces, and the rotating inclined surface 321 and the guiding inclined surface 211 are complementary surfaces. The rotation inclined surface 321 cooperates with the guiding

inclined surfaces

211 and 1121 to allow the rotation block 32 to enter from one of the guiding grooves 113 to the other guiding groove 113, thereby realizing the rotation of the rotation member 3.

Further, a first type prompt mark and a second type prompt mark are arranged on the outer peripheral surface of the rotating body 31, the first type prompt mark comprises seven green display signals from monday to sunday, and the second type prompt mark comprises seven red display signals from monday to sunday. When the injection pen body is taken out of the injection pen cap 1, the display window 111 displays a first type of prompt mark to indicate that the medicine is not injected on the day, and when the injection pen body is inserted into the injection pen cap 1, the display window 111 displays a second type of prompt mark to indicate that the medicine is injected on the day. When the rotating member 3 rotates along the circumferential direction, the display window 111 sequentially displays Monday to Sunday, so that the patient can be reminded to inject the medicine every day, and the phenomenon of missing or more medicines is prevented. 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 be reminded.

Further, a support pillar 33 is provided on the other end surface of the rotating body 31, the support pillar 33 is provided at the center of the rotating body 33, and the elastic member is mounted on the support pillar 33. In this embodiment, the elastic member is a spring 4, and the spring 4 is sleeved on the supporting upright 33.

As shown in fig. 5, the injection pen further comprises an upper cover 5, the upper cover 5 covers and buckles one end of the first housing 11, and the upper cover 5 and the first housing 11 are connected through threads. The upper cover 5 is provided with a supporting cylinder 51, one end of the supporting cylinder 51 is connected to the top wall of the upper cover 5, the other end of the supporting cylinder extends into the first shell 11, the spring 4 and the supporting upright column 33 are both installed in the supporting cylinder 51, and the spring 4 is in contact with the top wall of the upper cover 5. In this embodiment, the upper cover 5 is conveniently and rapidly detached from the injection pen cap 1, so as to facilitate replacement and maintenance of the components inside the injection pen cap 1. In other embodiments, the upper cover 5 may be connected to the first housing 11 by other connection methods.

Installation process of the injection pen cap 1:

as shown in fig. 1-5, the pushing member 2, the rotary member 3 and the spring 4 are loaded into the inside of the injection pen cap 1 in sequence from the top of the first housing 11. The sliding block 23 of the pushing member 2 is mounted in the guide groove 113 inside the injection pen cap 1, and simultaneously pushes the plug plate 22 to contact the support boss 114, preventing the pushing member 2 from further moving downwards. The rotation block 32 of the rotation member 3 is placed in the guide groove 113, and the lower half of the rotation inclined surface 321 of the rotation block 32 is in contact with the upper half of the guide inclined surface 211 of the triangular block 21, and the first indication mark on the rotation body 31 is displayed in the display window 111. The spring 4 is sleeved on the support upright 33 of the rotating member 3, the upper cover 5 is installed at the top of the first housing 11, the support cylinder 51 extends into the first housing 11, and the spring 4 and the support upright 33 are located in the inner cavity of the support cylinder 51.

In the embodiment, the patient injects insulin every day as an example, and the injection pen cap 1 has the functions of reminding the patient of injecting insulin every day and preventing the patient from injecting insulin for multiple times a day. There are seven days in a week, so that the rotation of the rotary member 3 by 360 ° sequentially shows seven days. In the present embodiment, the number of the limiting members 112 inside the injection pen cap 1, the triangular block 21 and the slide block 23 of the pushing member 2, and the rotating block 32 of the rotating member 3 are set to seven. The first type of cues on rotating body 31 are labeled monday, tuesday, wednesday, thursday, friday, saturday, and sunday green, and the second type of cues are labeled monday, tuesday, thursday, friday, saturday, and sunday red. For example, when a patient finishes injecting insulin on Monday, the injection needle is taken down, and then the injection pen cap 1 is mounted on the injection pen body, the injection pen body pushes the push plug support column 24 of the push piece 2 to move upwards, the push piece 2 moves along the guide groove 113 to drive the rotating piece 3 to move upwards to compress the spring 4, the spring 4 is in a compressed state, the rotating inclined surface 321 of the rotating block 32 abuts against the bottom of the guide inclined surface 211 of the triangular block 21, and the red Monday on the rotating body 31 is displayed in the display window 111. The patient sees the red monday from the display window 111 of the injection pen cap 1, and knows that insulin was injected on the day of monday. When the injection pen cap 1 is removed from the injection pen body, the rotating member 3 is pushed by the elastic force of the spring 4 to move downward, at this time, the rotating inclined surface 321 simultaneously contacts with the guiding inclined surface 211 and the guiding inclined surface 1121 of the limiting member 112, and the rotating inclined surface 321 moves along the guiding inclined surface 1121, so that the rotating block 32 enters into another guiding groove 113, and the rotation of the rotating member 3 is realized. The rotating part 3 drives the pushing part 2 to move downwards along the guide groove 113 until the pushing plug plate 22 abuts on the supporting boss 114, the rotating part 3 and the pushing part 2 stop moving, and the spring 4 returns to a natural straightening state. At this time, the green tuesday on the rotating body 31 is displayed in the display window, the patient is reminded that insulin needs to be injected on the day of the tuesday, and the patient installs a new injection needle on the injection pen body to inject the insulin. This process is then repeated every day, with one week passing as the rotor 3 rotates 360 °. When a patient forgets whether to inject insulin within one day, the patient can see the prompt mark on the injection pen at any time, if the patient is red in the previous day, the patient indicates that the patient is not injecting insulin today, and if the patient is red in the current day, the patient indicates that the patient is injecting insulin today. Therefore, the patient is reminded whether to inject insulin or not on the same day. The injection pen cap 1 is connected to the injection pen body through threads, the internal threads below the limiting part 112 of the injection pen cap 1 are the same as the internal threads of the injection needle head, and the injection pen cap can be adapted to main equipment bodies of different models and has wide practicability.

In other embodiments, the injection pen cap 1 sets the internal structure as required to remind the patient of different information, for example, the patient needs to inject three times a day, i.e. in the morning, at noon, in the evening, and needs to inject twenty times a week. Seven limiting members 112 are arranged inside the injection pen cap 1, the end of each limiting member 112 is provided with three guiding inclined surfaces 1121, the three guiding inclined surfaces 1121 are arranged in a step shape, each triangular block 21 is provided with three guiding inclined surfaces 211, the three guiding inclined surfaces 211 are arranged in a step shape, and the inclination directions of the guiding inclined surfaces 211 and the guiding inclined surfaces 1121 are the same. The first type of prompt mark on the rotary body 31 is set to be green on Monday morning, Monday midday, Monday night and the like until Sunday morning, Sunday midday and Sunday evening according to the design position, and the second type of prompt mark is set to be red on Monday morning, Monday midday, Monday night and the like until Sunday morning, Sunday midday and Sunday evening. After the patient finishes injecting insulin on monday morning, the injection needle is removed, and then the injection pen cap 1 is mounted on the injection pen body, and the red monday morning on the rotating body 31 is displayed in the display window 111. The patient sees red monday morning from the display window 111 of the injection pen cap 1, and knows that insulin has been injected on the morning of monday. When the injection pen cap 1 is removed from the injection pen body, the rotating member 3 is pushed by the elastic force of the spring 4 to move downward, the rotating inclined surface 321 simultaneously contacts with the guiding inclined surface 211 and the guiding inclined surface 1121 of the limiting member 112, the rotating inclined surface 321 moves along the first guiding inclined surface 1121 of the limiting member 112, and the movement is stopped when the rotating block 32 contacts with the first step. The rotating member 3 rotates by a certain angle, and the green monday on the rotating body 31 is displayed in the display window 111 at the moment to remind a patient that insulin needs to be injected at monday noon, and the patient installs a new injection needle on the injection pen body to inject the insulin. The rotating piece 3 rotates 360 degrees to display twenty-one prompt marks, and the patient is reminded to inject the medicine.

For example, the injection pen cap 1 can also be used to remind the patient of the last injection location and suggest the next injection location. For example, the display window 111 displays six different body injection sites, namely, left and right arms, two different positions of the abdomen, and left and right legs. Six limiting parts 112 are arranged in the injection pen cap 1, the triangular blocks 21 and the rotating blocks 32 are six in number, the same working principle is used, the patient is reminded of injecting the medicine at different positions, and the phenomenon that fat and scar tissues are gathered and fat swelling is caused due to repeated injection of the medicine at the same position of the body is avoided.

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

The injection pen cap 1 of the embodiment can remind a patient of the date of insulin injection in time, ensure that the patient injects insulin every day, and prevent repeated injection or less injection caused by forgetting to inject the medicine. In addition, the parts inside the injection pen cap 1 are all mechanical parts, can be placed in various environments for use, can be used for high-temperature or steam sterilization, and are easy to sterilize; the injection pen cap 1 is installed in or taken off from the injection pen body to achieve the function of reminding patients of information, is simple to operate, can be used without learning, and is more convenient for elderly patients to use; the injection pen cap 1 is inexpensive to produce and can be used as a disposable device.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. The utility model provides an injection pen with remind and alarming function, includes injection pen cover (1) and injection pen body, its characterized in that, be provided with display window (111) on injection pen cover (1), be provided with in injection pen cover (1):

a pusher (2) slidingly arranged inside the injection pen cap (1);

the rotating piece (3) is abutted with the pushing piece (2), and two different types of prompt marks are arranged on the rotating piece (3);

one end of the elastic piece is abutted with the rotating piece (3), and the other end of the elastic piece is abutted with the inner wall of the injection pen cap (1);

when the injection pen body extends into the injection pen cap (1), the injection pen body pushes the pushing piece (2) and the rotating piece (3) to move and compress the elastic piece; when the injection pen body is separated from the injection pen cap (1), the elastic piece drives the rotating piece (3) and the pushing piece (2) to move in opposite directions, so that the rotating piece (3) rotates;

the rotating piece (3) comprises a rotating body (31), the prompt marks comprise a first class prompt mark and a second class prompt mark which are arranged on the peripheral surface of the rotating body (31), when the injection pen body is separated from the injection pen cover (1), the display window (111) displays the first class prompt mark to prompt that the medicine needs to be played, and when the injection pen body extends into the injection pen cover (1), the display window (111) displays the second class prompt mark to warn that the medicine is played.

2. The injection pen as claimed in claim 1, wherein a plurality of stoppers (112) are circumferentially arranged inside the injection pen cap (1), a guide groove (113) is formed between two adjacent stoppers (112), the pushing member (2) slides along the guide groove (113), one end of each stopper (112) close to the rotating member (3) is provided with a guide inclined surface (1121), and the rotating member (3) is matched with the guide inclined surface (1121) to rotate the rotating member (3) and extend into another guide groove (113) adjacent to the guide groove (113).

3. The injection pen according to claim 2, wherein one end of each of the retaining members (112) close to the rotary member (3) is provided with a plurality of the guiding inclined surfaces (1121), and the plurality of the guiding inclined surfaces (1121) are arranged in a step shape.

4. The injection pen of claim 2, wherein the plurality of guide slopes (1121) are inclined in the same direction.

5. Injection pen according to claim 2, characterized in that the pusher (2) is provided with a plurality of guides near one end of the rotor (3), each of which is provided with a guiding ramp (211), the rotor (3) cooperating with the guiding ramps (211) to move the rotor (3) along the guiding ramps (211).

6. The injection pen according to claim 5, wherein a plurality of the guide slopes (211) are provided on each guide, and a plurality of the guide slopes (211) are provided in a stepped manner.

7. Injection pen according to claim 5, characterized in that the inclination direction of the plurality of guide ramps (211) is the same.

8. Injection pen according to claim 2, characterized in that the pusher (2) is provided with a plurality of sliding blocks (23) in the circumferential direction, the sliding blocks (23) are mounted in the guide groove (113), and the sliding blocks (23) can slide along the guide groove (113).

9. The injection pen according to claim 5, wherein the rotary member (3) comprises a rotary body (31) and a rotary block (32), one end of the rotary block (32) is connected to the rotary body (31), the other end is provided with a rotary inclined surface (321), and the rotary inclined surface (321) moves along the guide inclined surface (1121) to rotate the rotary member (3) and extend into the guide groove (113).

10. Injection pen according to claim 9, characterized in that the rotation ramp (321) can press against the guide ramp (211) and the guide ramp (1121).

11. The injection pen according to claim 10, wherein the rotation inclined surface (321) abuts against the guide inclined surface (1121) when the rotation inclined surface (321) moves along the guide inclined surface (1121).

12. The injection pen according to claim 10, wherein the rotational ramp (321) abuts the guiding ramp (211) when the rotational ramp (321) moves along the guiding ramp (211).

13. The injection pen according to claim 10, wherein the rotation inclined surface (321) is engaged with both the guide inclined surface (1121) and the guide inclined surface (211) when the rotation inclined surface (321) moves along the guide inclined surface (1121) and the guide inclined surface (211).

14. Injection pen according to claim 9, characterized in that the end of the rotary piece (3) remote from the push piece (2) is provided with a support pillar (33), the elastic piece being sleeved outside the support pillar (33).

15. Injection pen according to claim 2, characterized in that the end of the stop (112) remote from the rotational member (3) is provided with a support boss (114) for supporting the pusher (2).

16. Injection pen according to claim 1, characterized in that the injection pen cap (1) further comprises an upper cap (5), the upper cap (5) is capped at one end of the injection pen cap (1), and the elastic element abuts against the upper cap (5).

17. Injection pen according to claim 16, characterized in that the upper cap (5) is provided with a support barrel (51), one end of the support barrel (51) is connected to the top wall of the upper cap (5) and the other end extends into the inside of the injection pen cap (1), and the elastic element is arranged in the support barrel (51).

18. Injection pen according to claim 2, characterized in that a guide plate (115) is arranged on each stop member (112), one end of the guide plate (115) is connected to the end of the stop member (112) remote from the rotation member (3), and the other end is inclined towards the inner wall of the injection pen cap.