CN114141087A

CN114141087A - Simulation injection pen

Info

Publication number: CN114141087A
Application number: CN202111640759.2A
Authority: CN
Inventors: 陈翠柳; 欧灿生; 舒庆; 王杰; 其他发明人请求不公开姓名
Original assignee: Shenzhen Huimai Intelligent Technology Co ltd
Current assignee: Shenzhen Huimai Intelligent Technology Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-03-04

Abstract

The embodiment of the application provides a simulation injection pen, which is used for reducing the cost of a user for practicing or teaching the use method of the automatic injection pen. The embodiment of the application comprises the following steps: the pen body, the reset structure, the resettable unlocking structure, the resettable triggering structure and the resettable propelling structure; the trigger structure moves relative to the pen body and is converted from an unfired state to a triggered state; the trigger structure is converted into a triggered state, so that the unlocking structure is converted from an un-unlocked state to an unlocked state; the unlocking structure is changed into an unlocked state, so that the propelling structure is changed from a propelling potential accumulation state to a propelling ending state; the reset structure is matched with the propelling structure and is used for resetting the propelling structure from a propelling ending state to a propelling potential accumulation state; the reset structure is matched with the unlocking structure, and the reset structure is used for resetting the unlocking structure from the unlocked state to the unlocked state.

Description

Simulation injection pen

Technical Field

The embodiment of the application relates to the field of medical instruments, in particular to a simulation injection pen.

Background

At present, in order to meet the requirement of a user for self-injection of medicines and improve the convenience and timeliness of medicine injection, various automatic injection pens are available on the market. Since the automatic injection pen is a professional medical instrument, a general user cannot know the use method of the automatic injection pen, and training and teaching are required in order for the user to be familiar with the use method of the automatic injection pen.

Due to the hygienic requirement, the needle head and the medicine of the automatic injection pen are disposable articles, and huge waste is caused if the automatic injection pen is used for practice and teaching.

Disclosure of Invention

The embodiment of the application provides a simulation injection pen, which is used for reducing the cost of a user for practicing or teaching the use method of the automatic injection pen.

The embodiment of the application provides a simulation injection pen, includes: the pen body, the reset structure, the resettable unlocking structure, the resettable triggering structure and the resettable propelling structure;

the unlocking structure and the propelling structure are arranged inside the pen body, and part of the triggering structure is arranged outside the pen body;

the propulsion structure comprises two states, namely a propulsion accumulation state and a propulsion ending state; the trigger structure comprises two states, namely an unfired state and a triggered state; the unlocking structure comprises two states, namely an unlocked state and an unlocked state;

the trigger structure moves relative to the pen body and is converted from an unfired state to a triggered state; the trigger structure is converted into a triggered state, so that the unlocking structure is converted from an un-unlocked state to an unlocked state; the unlocking structure is changed into an unlocked state, so that the propelling structure is changed from a propelling potential accumulation state to a propelling ending state;

the reset structure is matched with the propelling structure and is used for resetting the propelling structure from a propelling ending state to a propelling potential accumulation state; the reset structure is matched with the unlocking structure, and the reset structure is used for resetting the unlocking structure from the unlocked state to the unlocked state.

According to the technical scheme, the embodiment of the application has the following advantages: the simulation injection pen with the resettable unlocking structure, the resettable triggering structure and the resettable propelling structure is used, the resetting structure is used for resetting each resettable structure, the simulation injection pen can be repeatedly used, multiple times of practice and teaching can be realized by using one simulation injection pen, and compared with the use of an automatic injection pen for practice and teaching, the cost is obviously reduced.

The simulation injection pen in an implementation mode of the real-time example of the application further comprises a resettable push-to-finish sounding structure;

the propelling and finishing sounding structure is arranged inside the pen body;

the propulsion ending sounding structure comprises two states, namely a sounding accumulation state and a sounding ending state;

the propulsion structure is converted into a propulsion ending state, so that the propulsion ending sounding structure is converted from a sounding accumulation state to a sounding ending state;

the reset structure is matched with the propulsion ending sounding structure, and the reset structure is used for resetting the propulsion ending sounding structure from a sounding ending state to a sounding accumulation state.

In the embodiment, the resettable propulsion ending sounding structure is used for sounding to prompt the user to end the propulsion process when the propulsion process is ended, so that the realizability of the scheme is improved.

In an implementation manner of the real-time example of the application, the propulsion ending sounding structure realizes sounding through ejection collision; the propulsion end sounding structure comprises a second elastic element, a second sound piece and a second blocking component; one end of the second elastic element is fixed relative to the second blocking part, and the other end of the second elastic element acts on the second sound piece; when the propulsion structure is converted into the propulsion ending state, the second sound piece moves relative to the second blocking component under the action force of the second elastic element, and the second sound piece collides with the second blocking component to make a sound.

In this embodiment, the propulsion-end sounding structure realizes sounding through ejection collision, and the realizability of the scheme is improved.

In an implementation manner of the present application, the propulsion-end sounding structure further includes a housing elastic element, a housing rail, and a fixed window rail; the second barrier comprises a sound housing, a fixed window;

the second sound piece moves in the sound piece shell, the shell track is fixedly arranged on the sound piece shell and is L-shaped, the shell track comprises a fourth sub-track and a fifth sub-track, the second sound piece is provided with a fourth track fitting piece, the fourth track fitting piece is matched with the shell track, when the fourth track fitting piece is positioned on the fifth sub-track, the second sound piece can rotate relative to the sound piece shell and cannot move back and forth, and when the fourth track fitting piece is positioned on the fourth sub-track, the second sound piece can move backwards relative to the sound piece shell and cannot rotate;

the front end of the second elastic element acts on the second sound piece, and the rear end of the second elastic element acts on the sound piece shell;

the sound piece shell moves forwards relative to the fixed window under the action of the shell elastic element, one end of the shell elastic element is fixed relative to the fixed window, and the other end of the shell elastic element is used for pushing the sound piece shell;

the fixed window track is fixedly arranged on the fixed window, the fourth track fitting piece is matched with the fixed window track, the fixed window track comprises a first sub-track, a second sub-track and a third sub-track, the first sub-track and the third sub-track are parallel to each other, the first sub-track, the second sub-track and the third sub-track are communicated, the rear end of the second sub-track is connected with the front end of the third sub-track, the front end of the second sub-track is connected with the rear end of the first sub-track, so that the second sound piece moves back and forth in the first sub-track and the third sub-track relative to the fixed window, and the second sound piece rotates while moving back and forth in the second sub-track relative to the fixed window;

the shell track and the fixed window track are matched, so that the fourth track matching piece moves on the fourth sub-track at the same time as the first sub-track, the fourth track matching piece moves on the fifth sub-track at the same time as the third sub-track, and the fourth track matching piece moves on the fifth sub-track in a rotating mode at the same time as the second sub-track.

In this embodiment, the second sound component is controlled by the casing rail and the fixed window rail, so that the scheme is more realistic.

In an implementation manner of the present application, the propelling structure includes a piston cylinder, a piston rod and a propelling elastic element; the propelling structure is a piston type structure; the piston rod and the piston cylinder can move relatively;

the piston rod is fixedly arranged relative to the pen body, the piston cylinder is a propelling structure moving part, or,

the piston cylinder is fixedly arranged relative to the pen body, and the piston rod is a propelling structure moving part;

one end of the propelling elastic element is fixed relative to the pen body, and the other end of the propelling elastic element acts on the propelling structure moving part.

In this embodiment, the propulsion structure is divided into fixed mounting's part and propulsion structure moving part, adopts piston structure, has improved the realizability of scheme.

In an implementation manner of the present example, the propelling structure further includes a piston head disposed at an end of the piston rod, and the piston head is matched with the piston cylinder.

In the embodiment, the piston head is arranged at the tail end of the piston rod and is matched with the piston cylinder, so that the time of the propelling process can be adjusted by adjusting the size and the material of the piston head, and the flexibility is improved.

In an implementation manner of the present application, the unlocking structure includes an unlocking linear motion member, an unlocking rotational motion member, and an unlocking fixed member;

when the unlocking structure is in an unlocked state, the unlocking linear motion piece is in static fit with the unlocking rotary motion piece;

when the unlocking structure is changed from the unlocked state to the unlocked state, the unlocking rotary moving piece is matched with the unlocking fixed piece under the pushing of the trigger structure, and the unlocking rotary moving piece moves backwards relative to the unlocking fixed piece and rotates towards the second direction; the unlocking linear moving piece moves backwards relative to the unlocking fixing piece under the pushing of the unlocking rotary moving piece until the unlocking linear moving piece is separated from the unlocking rotary moving piece;

when the unlocking structure is reset to be in an unlocking state from the unlocking state, the unlocking linear motion piece is matched with the unlocking rotary motion piece under the pushing of the resetting structure, the unlocking linear motion piece moves backwards relative to the unlocking fixing piece, and the unlocking rotary motion piece rotates towards the second direction relative to the unlocking fixing piece until the unlocking linear motion piece is in static matching with the unlocking rotary motion piece.

In the embodiment, the unlocking structure is formed by the unlocking linear motion piece, the unlocking rotary motion piece and the unlocking fixing piece, so that the realizability of the scheme is improved.

In an implementation manner of this application, the unlocking structure further includes: the unlocking mechanism comprises a first rail, a second rail, an unlocking positioning part, a third rail, a first elastic element and a first rotating elastic element;

the third track is fixedly arranged on the unlocking fixing piece, one end of the first elastic element is fixed relative to the pen body, and the other end of the first elastic element acts on the unlocking linear motion piece;

the inner side of the unlocking linear motion part is provided with a first rail matching part which is matched with the first rail, so that the unlocking linear motion part can move back and forth relative to the unlocking fixing part and cannot rotate relative to the unlocking fixing part;

the second track fixing and unlocking positioning part is arranged on the inner side of the unlocking rotary moving part and is connected with the second track; a second rail matching piece is arranged on the outer side of the unlocking linear motion piece and matched with the second rail, so that when the second rail matching piece moves backwards along the second rail, the unlocking rotary motion piece rotates towards the second direction relative to the unlocking linear motion piece;

one end of the first rotating elastic element is connected with the trigger structure, and the other end of the first rotating elastic element is connected with the unlocking rotating movement piece; the unlocking positioning part is fixedly arranged on the inner side of the unlocking rotary motion part and is connected with the second track, so that when the second track matching piece moves backwards along the second track to be separated from the second track, the unlocking rotary motion part rotates towards the first direction under the action of the first rotary elastic element, and the second track matching piece is matched with the unlocking positioning part;

the third rail fitting piece is arranged on the outer side of the unlocking rotary motion piece and is matched with the third rail, so that when the third rail fitting piece moves backwards along the third rail, the unlocking rotary motion piece rotates towards the second direction relative to the pen body.

In this embodiment, the unlocking structure is provided with a plurality of tracks for controlling the movement modes of the unlocking linear movement member and the unlocking rotary movement member, and the realizability of the scheme is improved.

In an implementation manner of the present application, the trigger structure includes a needle protection cylinder and a skin elastic element;

the needle protecting cylinder is arranged at the front end of the pen body and can move back and forth relative to the pen body; one end of the skin elastic element is fixed relative to the pen body, and the other end of the skin elastic element acts on the needle protecting cylinder; the rear end of the needle protection cylinder is connected with one end of the first rotary elastic element, and the rear end of the needle protection cylinder abuts against the front end of the unlocking rotary motion part.

In the embodiment, the needle protection cylinder and the skin elastic element form a trigger structure, so that the realizability of the scheme is improved.

In an implementation manner of the present application, the reset structure includes a reset pin; the reset needle is used for being pushed in from the front end of the pen body.

In this embodiment, use the needle that resets as the structure that resets, simple structure, convenient to use.

The simulation injection pen in an implementation manner of the real-time example of the application further comprises a cap;

the cap is detachably connected with the front end of the pen body;

the resetting structure is arranged at the rear end of the pen cap.

In this embodiment, the resetting structure is connected with the cap, so that the step of closing the cap and the step of resetting are combined into one step, and the use is more convenient.

In an implementation of the present application, the pen body is provided with a window, which is transparent or hollowed out, so that the user can observe the propelling structure through the window.

In this embodiment, set up the window at the pen body, the user of being convenient for observes the motion of advancing the structure through eyes.

The simulation injection pen in an implementation mode of the real-time example of the application further comprises a resettable backstop structure;

the backstop structure is arranged inside the pen body;

the retaining structure comprises two states, namely a retaining active state and a retaining locking state;

the trigger structure moves relative to the pen body and returns to an unfired state from a triggered state, so that the backstop structure is converted from a backstop movable state to a backstop locking state; the backstop structure is in a backstop locking state, so that the trigger structure is locked in an unfired state, and the trigger structure cannot be converted from the unfired state to the triggered state;

the reset structure is matched with the retaining structure, and the retaining structure is used for resetting the retaining structure from a retaining locking state to a retaining movable state.

In this embodiment, use reducible stopping structure for after accomplishing an exercise, before reseing, block that the trigger structure triggers once more, improved the realizability of this scheme.

In an implementation manner of the present application, the anti-backup structure includes a rotation locking component, a second rotation elastic element, and an anti-backup blocking component;

the anti-return blocking component is fixedly arranged on the pen body, one end of the second rotary elastic element is connected with the trigger structure, the other end of the second rotary elastic element is connected with the rotary locking component, the rotary locking component can rotate relative to the trigger structure, and the rotary locking component cannot move back and forth relative to the trigger structure; the outer side of the rotary locking component is provided with a retaining bulge, and the retaining blocking component is provided with a retaining track;

when the retaining structure is in a retaining movable state, the retaining protrusion is matched with the retaining track, so that the rotary locking component moves backwards relative to the retaining blocking component under the pushing of the trigger structure;

when the trigger structure returns to an unfired state from a triggered state, the trigger structure drives the rotary locking part to move forwards until the retaining protrusion is separated from the front end of the retaining track, and after the retaining protrusion is separated from the retaining track, the rotary locking part rotates towards the second direction under the action of the second rotary elastic element, so that the rear end of the retaining protrusion abuts against the front end of the retaining blocking part to prevent the rotary locking part from moving backwards;

when the retaining structure is in a retaining locking state, the rotation locking component cannot move backwards relative to the retaining blocking component in the locking position.

In this embodiment, the rotation locking member, the second rotation elastic element, and the retaining block member form a retaining structure, which improves the realizability of the present solution.

In an implementation manner of the real-time example of the application, the simulation injection pen further comprises a resettable propelling initial sounding structure;

the propelling initial sounding structure is arranged inside the pen body;

the propulsion starting sounding structure comprises two states, namely a sounding accumulation state and a sounding ending state;

the unlocking structure is converted into an unlocked state, so that the propulsion starting sounding structure is converted from a sounding accumulation state to a sounding ending state; the propulsion starting sounding structure is converted into a sounding ending state, so that the propulsion structure is converted from a propulsion accumulation state to a propulsion ending state;

the reset structure is matched with the propulsion initial sounding structure, and the reset structure is used for resetting the propulsion initial sounding structure from a sounding ending state to a sounding accumulation state.

In the embodiment, the resettable propulsion starting sounding structure is used for sounding to prompt a user to start the propulsion process when the propulsion process starts, so that the realizability of the scheme is improved.

In an implementation manner of the real-time example of the application, the initial sounding structure is propelled to realize sounding through ejection collision; the propelling initial sounding structure comprises an initial elastic element, a first sound piece and a first blocking part; one end of the starting elastic element is fixed relative to the pen body, and the other end of the starting elastic element acts on the first sound piece; when the unlocking structure is changed into the unlocked state, the first sound piece moves relative to the first blocking part under the action of the starting elastic element, and the first sound piece collides with the first blocking part to make a sound.

In this embodiment, impel initial vocal structure and realize the sound production through launching the collision, improved the realizability of this scheme.

one end of the propelling elastic element is fixed relative to the pen body, and the other end of the propelling elastic element acts on the propelling structure moving part;

the first blocking component is fixedly connected with the propelling structure moving part.

In this embodiment, the first blocking member is fixedly connected to the propelling structure moving member, so that the realizability of the scheme is improved.

Drawings

FIG. 1 is a front view of a pre-use state of an emulation injection pen of an embodiment of the present application;

FIG. 2 is a cross-sectional view of a pre-use state of an emulation injection pen of an embodiment of the present application;

FIG. 3 is a perspective view of an in-use state of a simulated injection pen of an embodiment of the present application;

FIG. 4 is a cross-sectional view of an in-use state of a simulated injection pen of an embodiment of the present application;

FIG. 5 is a cross-sectional view of an unlocked state of a simulated injection pen of an embodiment of the present application;

FIG. 6 is a cross-sectional view of a first sound piece impinging on a sound producing state of an emulation injection pen of an embodiment of the present application;

FIG. 7 is a cross-sectional view of a second sound element of the simulated injection pen of an embodiment of the present application in a sound-impinging state;

FIG. 8 is a cross-sectional view of a backstop locking condition of a simulated injection pen of an embodiment of the present application;

FIG. 9 is an exploded view of the simulated injection pen of the embodiment of the present application;

FIG. 10 is another exploded view of the simulated injection pen of the embodiment of the present application;

FIG. 11 is a perspective view of an unlocking linear motion member of the simulated injection pen of an embodiment of the present application;

FIG. 12 is a perspective view of an unlocking rotational movement of the simulated injection pen of an embodiment of the present application;

FIG. 13 is a cross-sectional view of an unlocking rotational movement of the simulated injection pen of an embodiment of the present application;

FIG. 14 is a front view of an unlocking fixture of the simulated injection pen of an embodiment of the present application;

FIG. 15 is a perspective view of a plunger barrel of an artificial injection pen according to an embodiment of the application;

FIG. 16 is a perspective view of the sound producing potential accumulation of the second sound piece and the sound piece housing of the emulation injection pen according to the embodiment of the present application;

FIG. 17 is a perspective view of the second sound piece and the sound-emitting end state of the sound piece housing of the simulated injection pen according to the embodiment of the present application;

FIG. 18 is a perspective view of a fixed window of an artificial injection pen of an embodiment of the application;

FIG. 19 is a front view of a fixed window of a simulated injection pen of an embodiment of the present application;

1. a pen body; 101. a window; 2. a reset needle; 301. unlocking the linear motion member; 3011. a first rail mating member; 3012. a second rail mating member; 302. unlocking the rotary motion member; 3021. a third rail fitting; 303. unlocking the fixing piece; 304. a first track; 305. a second track; 306. a third track; 307. a first elastic element; 308. a first rotational elastic element; 309. unlocking the positioning part; 401. protecting the needle cylinder head; 402. a needle guard barrel connector; 403. a skin elastic element; 501. a piston cylinder; 502. a piston rod; 503. a piston head; 504. a window sheet; 505. a propulsion elastic unit; 601. a second sound element; 6011. a fourth rail fitting; 602. a sound enclosure; 6021. a first half shell; 6022. a second half shell; 6023. an acoustic enclosure housing; 603. fixing the window; 604. a second elastic element; 605. a housing elastic member; 606. a housing track; 6061. a fourth sub-track; 6062. a fifth sub-track; 607. fixing a window rail; 6071. a first sub-track; 6072. a second sub-track; 6073. a third sub-track; 701. a rotation locking member; 7011. stopping the bulge; 702. a backstop blocking member; 703. a second rotational elastic element; 801. a first acoustic member; 802. a first blocking member; 803. an initial elastic element; 9. a pen body rear cover; 10. a cap; 11. the pen body is preceding.

Detailed Description

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

A simulated injection pen, which may also be referred to as an injection practice pen, is used to simulate an automatic injection pen. The simulation injection pen can be used for training the use habits of users or for teaching, so the operation flow of the simulation injection pen should be consistent with that of the automatic injection pen, but the simulation injection pen does not perform injection work, so a needle and a medicine bottle are not carried. The general flow of the automatic injection pen comprises triggering, unlocking, propelling a starting sounding prompt, propelling, a window 101 prompt, a propelling ending sounding prompt and needle protection barrel stopping. In the simulation injection pen, all or part of the flow of the automatic injection pen needs to be reproduced, and different flows are executed by different structures. In order to simplify the structure, the structures performing different processes often need to share part of the components. Due to the fact that the injection pen is simulated, in order to save cost, the injection pen needs to be designed to be resettable so as to be recycled.

For convenience of description, the direction in which the rear cap of the pen cap is directed to the syringe protection head 401 is defined as front, and the direction in which the syringe protection head 401 is directed to the rear cap of the pen cap is defined as rear.

As shown in fig. 1 to 10, the simulation injection pen according to the embodiment of the present application includes a pen body 1, a reset structure, a resettable unlocking structure, a resettable triggering structure, and a resettable propelling structure;

the unlocking structure and the propelling structure are arranged inside the pen body 1, and part of the triggering structure is arranged outside the pen body 1;

the trigger structure moves relative to the pen body 1 and is converted from an unfired state to a triggered state; the trigger structure is converted into a triggered state, so that the unlocking structure is converted from an un-unlocked state to an unlocked state; the unlocking structure is changed into an unlocked state, so that the propelling structure is changed from a propelling potential accumulation state to a propelling ending state;

The embodiment of the application has the following advantages: the simulation injection pen with the resettable unlocking structure, the resettable triggering structure and the resettable propelling structure is used, the resetting structure is used for resetting each resettable structure, the simulation injection pen can be repeatedly used, multiple times of practice and teaching can be realized by using one simulation injection pen, and compared with the use of an automatic injection pen for practice and teaching, the cost is obviously reduced.

The simulation injection pen also comprises a resettable propelling ending sounding structure;

the propelling ending sounding structure is arranged inside the pen body 1;

The simulation injection pen also comprises a resettable backstop structure;

the retaining structure is arranged inside the pen body 1;

the trigger structure moves relative to the pen body 1 and returns to an unfired state from a triggered state, so that the backstop structure is changed from a backstop movable state to a backstop locking state; the backstop structure is in a backstop locking state, so that the trigger structure is locked in an unfired state, and the trigger structure cannot be converted from the unfired state to the triggered state;

The simulation injection pen also comprises a resettable propelling initial sounding structure;

the propelling initial sounding structure is arranged inside the pen body 1;

It should be noted that the resettable advancement ending sounding structure, the resettable backstop structure, and the resettable advancement starting sounding structure are optional structures.

The simulation injection pen of the embodiment of the application can be divided into a pen body 1, a reset structure, a resettable unlocking structure, a resettable triggering structure, a resettable propelling ending sounding structure, a resettable stopping structure and a resettable propelling starting sounding structure, which are respectively described below.

As shown in fig. 1 to 2, the artificial injection pen is provided with a pen body 1. The pen body 1 is of a tubular structure, is internally provided with a through hole, and can be a cylinder or a prism. The front end of the pen body 1 is provided with a protrusion or a buckle for being connected with a pen body front frame 11, and the rear end of the pen body 1 is provided with a protrusion or a buckle for being connected with a pen body rear cover 9. A window 101 can be arranged on the side surface of the pen body 1, and the window 101 is transparent or hollow so that a user can observe the propelling structure through the window 101; alternatively, the body 1 is transparent so that the user can view the advancing structure through the body 1. The fixed window 603 may also be transparent to facilitate a user's observation of the movement of the acoustic enclosure 602.

As shown in fig. 3 to 4, the artificial injection pen is provided with a reset structure. The reset mechanism may be the reset pin 2 or a reset button, and the reset pin 2 is taken as an example for description. The reset needle 2 is a cylinder or a prism and is used for being inserted from the front end of the pen body 1 and pushing each structure to reset.

The reset structure is matched with the propelling structure and is used for resetting the propelling structure from a propelling ending state to a propelling potential accumulation state; the reset structure is matched with the unlocking structure, and the reset structure is used for resetting the unlocking structure from the unlocked state to the unlocked state. The reset structure is matched with the propulsion ending sounding structure, and the reset structure is used for resetting the propulsion ending sounding structure from a sounding ending state to a sounding accumulation state. The reset structure is matched with the retaining structure, and the retaining structure is used for resetting the retaining structure from a retaining locking state to a retaining movable state. The reset structure is matched with the propulsion initial sounding structure, and the reset structure is used for resetting the propulsion initial sounding structure from a sounding ending state to a sounding accumulation state.

The reduction needle 2 can be mounted on the cap 10, which simplifies the procedure and combines the reduction step and the capping step 10 into one step. The rear end of the cap 10 is provided with a reset needle 2 seat, and one end of the reset needle 2 is inserted into the reset needle 2 seat to complete the installation of the reset needle 2.

As shown in fig. 1-15, the artificial injection pen is provided with a resettable unlocking structure.

The unlocking structure comprises an unlocking linear moving piece 301, an unlocking rotary moving piece 302 and an unlocking fixed piece 303;

when the unlocking structure is in an unlocked state, the unlocking linear motion piece 301 is in static fit with the unlocking rotary motion piece 302;

when the unlocking structure is changed from the unlocked state to the unlocked state, the unlocking rotating member 302 is pushed by the trigger structure to be matched with the unlocking fixing member 303, and the unlocking rotating member 302 rotates in a second direction while moving backwards relative to the unlocking fixing member 303; the unlocking linear motion piece 301 moves backwards relative to the unlocking fixing piece 303 under the pushing of the unlocking rotary motion piece 302 until the unlocking linear motion piece 301 is separated from the unlocking rotary motion piece 302;

when the unlocking structure is reset to be in an unlocking state from the unlocking state, the unlocking linear motion piece 301 is matched with the unlocking rotary motion piece 302 under the pushing of the resetting structure, the unlocking linear motion piece 301 moves backwards relative to the unlocking fixed piece 303, and the unlocking rotary motion piece 302 rotates towards the second direction relative to the unlocking fixed piece 303 until the unlocking linear motion piece 301 is in static matching with the unlocking rotary motion piece 302.

The unlocking structure further includes: a first rail 304, a second rail 305, an unlocking positioning portion 309, a third rail 306, a first elastic element 307, and a first rotating elastic element 308.

The third track 306 is fixedly arranged on the unlocking fixing piece 303, one end of the first elastic element 307 is fixed relative to the pen body 1, and the other end of the first elastic element 307 acts on the unlocking linear motion piece 301;

a first rail 304 matching piece 3011 is arranged on the inner side of the unlocking linear motion piece 301, and the first rail 304 matching piece 3011 is matched with the first rail 304, so that the unlocking linear motion piece 301 can move back and forth relative to the unlocking fixing piece 303 and cannot rotate relative to the unlocking fixing piece 303;

the second rail 305 fixing and unlocking positioning portion 309 is provided inside the unlocking rotational movement piece 302, and the unlocking positioning portion 309 is connected to the second rail 305; a second rail 305 fitting part 3012 is arranged on the outer side of the unlocking linear motion member 301, and the second rail 305 fitting part 3012 is fitted with the second rail 305, so that when the second rail 305 fitting part 3012 moves backwards along the second rail 305, the unlocking rotary motion member 302 rotates in a second direction relative to the unlocking linear motion member 301;

one end of the first rotating elastic element 308 is connected with the trigger structure, and the other end of the first rotating elastic element 308 is connected with the unlocking rotating movement piece 302; the unlocking positioning portion 309 is fixedly disposed inside the unlocking rotary moving member 302, and the unlocking positioning portion 309 is connected to the second rail 305, so that when the second rail 305 engaging piece 3012 moves backward along the second rail 305 to disengage from the second rail 305, the unlocking rotary moving member 302 rotates in the first direction under the action of the first rotary elastic element 308, so that the second rail 305 engaging piece 3012 engages with the unlocking positioning portion 309;

the third rail 306 mating part 3021 is disposed on the outer side of the unlocking rotary moving member 302, and the third rail 306 mating part 3021 mates with the third rail 306, so that when the third rail 306 mating part 3021 moves backward along the third rail 306, the unlocking rotary moving member 302 rotates in the second direction relative to the pen body 1.

In this embodiment, the first direction is a counterclockwise direction in an overhead view, and the second direction is a clockwise direction in an overhead view; the first direction may be determined as a clockwise direction in an overhead view, and the second direction may be determined as a counterclockwise direction in an overhead view.

When the first rotary elastic element 308 is a torsion spring, the unlocking rotary moving member 302 is provided with a protrusion or a groove for cooperating with the first rotary elastic element 308; the rear end of the syringe-protecting connector 402 is provided with a protrusion or a groove for cooperating with the first rotary elastic member 308. When the first rotary elastic member 308 is a torsion spring, the first rotary elastic member 308 may be disposed outside the unlocking rotary mover 302 or outside the needle guard connecting member 402.

As shown in fig. 2-10, the artificial injection pen is provided with a resettable trigger structure. The trigger structure may be mounted at the front end, the rear end or the side wall of the pen body 1, and the following description will take the example that the trigger structure is mounted at the front end of the pen body 1 as an example. The front end of the needle protection cylinder is exposed out of the pen body 1, so that a user can press the front end of the needle protection cylinder. The trigger structure comprises a needle protecting cylinder, a skin elastic element 403; the needle protecting cylinder is arranged at the front end of the pen body 1 and can move back and forth relative to the pen body 1; one end of the skin elastic element 403 is fixed relative to the pen body 1, and the other end of the skin elastic element 403 acts on the needle protection cylinder; the rear end of the needle guard cylinder is connected with one end of the first rotary elastic element 308, and the rear end of the needle guard cylinder is abutted against the front end of the unlocking rotary motion piece 302. The skin elastic elements 403 are springs.

The needle protection cylinder comprises a needle protection cylinder head 401 and a needle protection cylinder connecting piece 402, and the rear end of the needle protection cylinder head 401 and the front end of the needle protection cylinder connecting piece 402 are fixedly installed. The needle guard is divided into a needle guard head 401 and a needle guard connector 402 for easy installation. One end of the skin elastic element 403 is fixed relative to the pen body 1, and the other end of the skin elastic element 403 acts on the syringe needle head 401; the rear end of the needle protection cylinder connector 402 is connected to one end of the first rotary elastic element 308, and the rear end of the needle protection cylinder connector 402 abuts against the front end of the unlocking rotary movement member 302.

It should be noted that, as for the trigger structure, the triggered state refers to the state where the needle guard cylinder is located at the last position where it can move relative to the pen body 1, and the non-triggered state refers to the state where the needle guard cylinder is located at the forefront position where it can move relative to the pen body 1. The trigger structure can be recovered to an unfired state from a triggered state after the external pressure on the needle protection cylinder is released under the action of the skin spring.

As shown in fig. 2-10 and 14-15, the artificial injection pen is provided with a resettable advancing structure. The propelling structure is used for simulating the injection time of a real injection pen, so that the propelling time of the propelling structure is equal to the injection time of the real injection pen. In order to facilitate the user to observe the start, process and end of the propulsion, visual cues such as a window and a window sheet can be arranged, and auditory cues such as a propulsion starting sounding structure and a propulsion ending sounding structure can also be arranged.

The propelling structure comprises a piston cylinder 501, a piston rod 502 and a propelling elastic element 505; the propelling structure is a piston type structure; the piston rod 502 and the piston cylinder 501 can move relatively; the piston rod 502 is fixedly installed relative to the pen body 1, and the piston cylinder 501 is a propelling structure moving part, or the piston cylinder 501 is fixedly installed relative to the pen body 1, and the piston rod 502 is a propelling structure moving part; one end of the propelling elastic element 505 is fixed relative to the pen body 1, and the other end of the propelling elastic element 505 acts on the propelling structure moving part.

The pushing structure further comprises a piston head 503, the piston head 503 is arranged at the end of the piston rod 502, and the piston head 503 is matched with the piston cylinder 501. The length of the pushing time can be adjusted by adjusting the tightness of the fit of the piston head 503 and the piston cylinder 501. The material used for the piston head 503 is silicone or rubber.

It should be noted that the piston rod 502 is fixedly installed relative to the pen body 1, and the piston cylinder 501 is a movable member of a propelling structure, or the piston cylinder 501 is fixedly installed relative to the pen body 1, and the piston rod 502 is a movable member of a propelling structure. The propulsion structure may also be a tape measure structure.

As shown in fig. 2-10 and 16-19, the simulated injection pen is provided with a resettable advancement ending sound emitting structure. The propulsion ending sounding structure is used for sounding when the propulsion is ended so as to prompt a user to finish the propulsion.

The propulsion finishing sounding structure realizes sounding through ejection collision; the push end sounding structure includes a second elastic element 604, a second sound piece 601, and a second blocking member; one end of the second elastic element 604 is fixed relative to the second blocking part, and the other end of the second elastic element 604 acts on the second sound piece 601; when the propulsion structure is changed to the propulsion end state, the second sound piece 601 moves relative to the second blocking member under the force of the second elastic element 604, and the second sound piece 601 collides with the second blocking member to generate sound.

The propulsion-end sounding structure further comprises a housing elastic element 605, a housing rail 606 and a fixed window rail 607; the second barrier comprises a sound enclosure 602, a fixed window 603;

the second sound piece 601 moves in the sound piece housing 602, the housing rail 606 is fixedly arranged on the sound piece housing 602, the housing rail 606 is L-shaped, the housing rail 606 comprises a fourth sub-rail 6061 and a fifth sub-rail 6062, the second sound piece 601 is provided with a fourth rail fitting 6011, the fourth rail fitting 6011 is fitted with the housing rail 606, so that when the fourth rail fitting 6011 is located on the fifth sub-rail 6062, the second sound piece 601 can move in a rotating manner and cannot move back and forth relative to the sound piece housing 602, and when the fourth rail fitting 6011 is located on the fourth sub-rail 6061, the second sound piece 601 can move back and cannot move in a rotating manner relative to the sound piece housing 602;

the front end of the second elastic element 604 acts on the second sound element 601, and the rear end of the second elastic element 604 acts on the sound element housing 602;

the sound device housing 602 moves forward relative to the fixed window 603 under the action of the housing elastic element 605, one end of the housing elastic element 605 is fixed relative to the fixed window 603, and the other end of the housing elastic element 605 is used for pushing the sound device housing 602;

the fixed window rail 607 is fixedly arranged on the fixed window 603, the fourth rail mating member 6011 is mated with the fixed window rail 607, the fixed window rail 607 includes a first sub-rail 6071, a second sub-rail 6072 and a third sub-rail 6073, wherein the first sub-rail 6071 and the third sub-rail 6073 are parallel to each other, the first sub-rail 6071, the second sub-rail 6072 and the third sub-rail 6073 are through, the rear end of the second sub-rail 6072 is connected with the front end of the third sub-rail 6073, the front end of the second sub-rail 6072 is connected with the rear end of the first sub-rail 6071, so that the second sound component 601 moves back and forth relative to the fixed window 603 on the first sub-rail 6071 and the third sub-rail 6073, and the second sound component 601 rotates while the second sub-rail 6072 moves back and forth relative to the fixed window 603;

the housing rail 606 and the fixed window rail 607 cooperate such that the fourth rail fitting piece 6011 is in the fourth sub-rail 6061 at the same time as the first sub-rail 6071, the fourth rail fitting piece 6011 is in the fifth sub-rail 6062 at the same time as the third sub-rail 6073, and is in the rotational movement of the fifth sub-rail 6062 at the same time as the second sub-rail 6072 moves.

Acoustic housing 602 includes a first half shell 6021, a second half shell 6022, and an acoustic housing sleeve 6023. The acoustic housing 602 may be split into left and right halves, i.e., the acoustic housing 602 is split into a first half shell 6021 and a second half shell 6022 in a plane passing through the axis of the acoustic housing 602, the first half shell 6021 and the second half shell 6022 are fitted, and the rear end of the acoustic housing 602 is fitted to the piston cylinder 501. To stiffen the acoustic enclosure 602, an acoustic enclosure cover 6023 may also be provided at the front end of the acoustic enclosure 602. The acoustic housing 602 may also be divided into front and back halves, i.e., the acoustic housing 602 is divided in cross-section into a first half shell 6021 and a second half shell 6022, and the first half shell 6021 and the second half shell 6022 may be threadably coupled.

The second resilient member 604 is a tower-shaped resilient member. The pushing elastic member 505, the housing elastic member 605 and the first elastic member 307 may be the same elastic member.

As shown in fig. 2 to 10 and fig. 12 to 14, the artificial injection pen is provided with a resettable backstop structure. The anti-back structure is used for preventing the trigger structure from being triggered for the second time, specifically, when the anti-back structure is in the anti-back activity state, the trigger structure enters the triggered state from the non-triggered state, and then returns to the non-triggered state from the triggered state, and the anti-back structure enters the anti-back locking state from the anti-back activity state. When the retaining structure is in the retaining locking state, the trigger structure is locked in the non-trigger state, and the trigger structure cannot enter the trigger state from the non-trigger state.

The backstop structure comprises a rotation locking part 701, a second rotation elastic element 703 and a backstop blocking part 702;

the anti-return blocking part 702 is fixedly arranged on the pen body 1, one end of the second rotary elastic element 703 is connected with the trigger structure, the other end of the second rotary elastic element 703 is connected with the rotary locking part 701, the rotary locking part 701 can rotate relative to the trigger structure, and the rotary locking part 701 cannot move back and forth relative to the trigger structure; the outer side of the rotation locking part 701 is provided with a retaining protrusion 7011, and the retaining blocking part 702 is provided with a retaining track;

when the retaining structure is in a retaining active state, the retaining protrusion 7011 is matched with the retaining rail, so that the rotation locking part 701 moves backward relative to the retaining blocking part 702 under the pushing of the trigger structure;

when the trigger structure returns to the non-triggered state from the triggered state, the trigger structure drives the rotation locking component 701 to move forward until the retaining protrusion 7011 is disengaged from the front end of the retaining track, and after the retaining protrusion 7011 is disengaged from the retaining track, the rotation locking component 701 rotates in the second direction under the action of the second rotation elastic element 703, so that the rear end of the retaining protrusion 7011 abuts against the front end of the retaining blocking component 702 to prevent the rotation locking component 701 from moving backward;

when the backstop structure is in the backstop locking state, the rotation locking part 701 cannot move backwards relative to the backstop blocking part 702 in the locking position.

When the second rotational elastic element 703 is a torsion spring, the rotational locking part 701 is provided with a protrusion or a groove for cooperating with the second rotational elastic element 703; the rear end of needle guard cylinder connector 402 is provided with a protrusion or a groove for cooperating with second rotary elastic element 703. When the second rotational elastic element 703 is a torsion spring, the second rotational elastic element 703 may be provided outside the rotational locking member 701 or outside the needle guard cylinder link 402.

As shown in fig. 2-15, the simulated injection pen is provided with a resettable push-to-initiate sound feature. The propulsion starting sounding structure is used for prompting the start of propulsion, and the propulsion starting sounding structure makes a sound when the propulsion structure starts to propel after the unlocking structure is changed into the unlocked state.

The initial sounding structure is pushed to realize sounding through ejection collision; the push start sounding structure includes a start elastic element 803, a first sound piece 801, and a first blocking member 802; one end of the initial elastic element 803 is fixed relative to the pen body 1, and the other end of the initial elastic element 803 acts on the first acoustic piece 801; when the unlocking structure is changed to the unlocked state, the first sound piece 801 moves relative to the first blocking member 802 under the force of the initial elastic member 803, and the first sound piece 801 collides with the first blocking member 802 to make a sound.

The propelling structure comprises a piston cylinder 501, a piston rod 502 and a propelling elastic element 505; the propelling structure is a piston type structure; the piston rod 502 and the piston cylinder 501 can move relatively;

the piston rod 502 is fixedly mounted with respect to the pen body 1, and the piston cylinder 501 is a movable member of a propelling structure, or,

the piston cylinder 501 is fixedly installed relative to the pen body 1, and the piston rod 502 is a movable member with a propelling structure;

one end of the propelling elastic element 505 is fixed relative to the pen body 1, and the other end of the propelling elastic element 505 acts on the propelling structure moving part;

the first blocking member 802 is fixedly connected to the moving parts of the propulsion structure.

The first elastic element 307, the pushing elastic element 505, the skin elastic element 403, the second elastic element 604, the housing elastic element 605, and the starting elastic element 803 are springs or rubber bands; the first rotational elastic element 308 and the second rotational elastic element 703 are torsion springs or rubber bands or the like. The second elastic member 604 may be a tower-shaped spring.

The first rail 304, the second rail 305, the third rail 306, the housing rail 606, the fixed window rail 607 may be grooves or protrusions; the first track 304 fitting 3011, the second track 305 fitting 3012, the third track 306 fitting 3021, and the fourth track fitting 6011 may be protrusions or grooves.

The unlocking fixture 303, the backstop blocking member 702, the third rail 306, the piston rod 502 may be designed as one part, i.e. a catch.

When the first elastic member 307 is a spring, a spring groove may be provided at the rear end of the unlocking linear motion member 301.

To further illustrate the cooperation between the different structures, the operation of the entire simulated injection pen is described below, by way of example only. As shown in fig. 1 to 19, the simulation injection pen according to the embodiment of the application includes a pen body 1, a reset structure, a resettable unlock structure, a resettable trigger structure, a resettable advance end sounding structure, a resettable backstop structure, and a resettable advance start sounding structure;

the structural change of the simulation injection pen can be divided into use and reset, the use can be divided into a state before use, a state in use and a state after use, and the reset can be divided into a state before reset, a state during reset and a state after reset, wherein the state before use is the same as the state after reset, and the state after use is the same as the state before reset. The simulation injection pen can realize cyclic utilization, reset after use, use after reset, alternate and continuous cycle.

The structure and movement of the injection pen in different states will be described below.

1. Pre-use state.

The reset needle 2 is arranged at the reset needle 2 seat of the cap 10, the cap 10 is arranged at the front end of the pen body 1, and the reset needle 2 is inserted into the pen body 1.

The cylinder head 401 is located at the foremost end of the cylinder head 401 with respect to the pen body 1.

The fourth rail fitting 6011 of the second acoustic member 601 is located on the fifth sub-rail 6062 of the enclosure rail 606 of the acoustic enclosure 602, and the fourth rail fitting 6011 of the second acoustic member 601 is located on the third section of the fixed window rail 607 of the fixed window 603. The second sound piece 601 is located at the rearmost end of the second sound piece 601 movable relative to the pen body 1, and the sound piece housing 602 is located at the rearmost end of the sound piece housing 602 movable relative to the pen body 1.

The piston rod 502 is fixedly installed relative to the pen body 1, and the piston cylinder 501 is a movable member of a propelling structure. The acoustic housing 602 is fixedly connected to the piston cylinder 501. The opening of the cylinder 501 is rearward, and a piston head 503 is provided at the end of the piston rod 502, the piston head 503 being engaged with the cylinder 501.

The unlocking linear motion member 301 is engaged with the unlocking rotational motion member 302, and the second rail 305 engaging piece 3012 of the unlocking linear motion member 301 is located at the unlocking position determining portion 309 of the unlocking rotational motion member 302. The unlocking rotary motion member 302 and the rotation locking member 701 are the same component, and hereinafter collectively referred to as the unlocking rotary motion member 302. Since the fitting 3012 of the second rail 305 is located in the unlocking positioning portion 309 of the unlocking rotary moving member 302, the retaining protrusion 7011 of the unlocking rotary moving member 302 is fitted to the retaining rail.

The first track 304 is fixedly arranged on the side wall of the piston cylinder 501, the first track 304 fitting part 3011 of the unlocking linear motion member 301 is fitted with the first track 304, and the first track 304 fitting part 3011 is located at the foremost end of the first track 304. A first blocking component 802 for pushing the initial sounding structure is fixedly arranged on the side wall of the piston cylinder 501, and the front end of the unlocking linear motion member 301 is in contact with the first blocking component 802. The first acoustic member 801 and the unlocking linear motion member 301 are the same component, and hereinafter collectively referred to as the unlocking linear motion member 301. The second rotary elastic element 703 connecting the triggering structure and the rotary locking member 701, and the first rotary elastic element 308 connecting the triggering structure and the unlocking rotary moving member 302, which are the same parts, are collectively referred to as the first rotary elastic element 308 hereinafter.

The first elastic element 307 of the push unlocking linear motion member 301, the pushing elastic unit of the push piston cylinder 501, the starting elastic element 803 of the push first acoustic member 801, and the housing elastic element 605 of the push acoustic member housing 602 are the same component, and hereinafter collectively referred to as the first elastic element 307.

The pre-use state is the post-reset state.

2. An in-use state.

The user pulls out the cap 10 and the reset needle 2.

The user presses the front end of the needle protection cylinder close to the skin and presses the front end of the needle protection cylinder forcefully, so that the needle protection cylinder moves backwards relative to the pen body 1. The needle protection cylinder is divided into a needle protection cylinder head 401 and a needle protection cylinder connecting piece 402, and the needle protection cylinder head 401 and the needle protection cylinder connecting piece 402 are fixedly connected. The protective cylinder connecting piece 402 moves backward relative to the pen body 1, and pushes the unlocking rotational movement piece 302 and the unlocking linear movement piece 301 to move backward. The third rail 306 engaging piece 3021 on the outer side of the unlocking rotary motion member 302 engages with the third rail 306, so that the unlocking rotary motion member 302 moves backward along the third rail 306 while moving rotationally in the second direction with respect to the pen body 1. Since the unlocking linear motion member 301 cannot perform the rotational motion with respect to the pen body 1, the rotational motion of the unlocking rotational motion member 302 in the second direction disengages the second rail 305 engaging piece 3012 of the unlocking linear motion member 301 from the unlocking position determining portion 309.

The second rail 305 engaging piece 3012 of the unlocking linear motion member 301 is disengaged from the unlocking positioning portion 309, so that the unlocking linear motion member 301 moves forward along the first rail 304 under the urging of the first elastic element 307. The unlocking linear motion member 301 moves forward along the first track 304 until it collides with the first stopper member 802 fixedly provided outside the piston cylinder 501, and the collision makes a sound.

After the collision, the first elastic element 307 continues to push the unlocking linear motion member 301 to move forward, and the unlocking linear motion member 301 and the piston cylinder 501 move forward together. The piston cylinder 501 and the piston rod 502 are relatively moved. The piston cylinder 501 is provided with window pieces 504 at both sides, and the movement of the window pieces 504 can be seen through the window 101 provided at the side of the pen body 1. The window piece 504 may be designed to be orange, blue, or the like, which is different from the pen body 1.

The piston cylinder 501 is fixedly connected with the acoustic housing 602, and the piston cylinder 501 pushes the acoustic housing 602 to move forward relative to the fixed window 603. The fourth rail fitting piece 6011 of the second acoustic member 601 moves forward along the third sub-rail 6073 of the fixed window rail 607 while the fourth rail fitting piece 6011 of the second acoustic member 601 is stationary with respect to the acoustic member housing 602 at the fifth sub-rail 6062 of the housing rail 606; the acoustic enclosure 602 further moves forward, and the fourth rail fitting piece 6011 of the second acoustic member 601 moves forward along the second sub-rail 6072 of the fixed window rail 607 while moving rotationally relative to the fixed window 603, and the fourth rail fitting piece 6011 of the second acoustic member 601 moves rotationally relative to the acoustic enclosure 602 along the fifth rail of the enclosure rail 606 while moving rotationally; when the sound housing 602 moves further forward, the fourth rail fitting piece 6011 of the second sound member 601 disengages from the fifth sub-rail 6062 of the housing rail 606 and enters the fourth sub-rail 6061, and the fourth rail fitting piece 6011 enters the first sub-rail 6071 of the fixed window rail 607, and under the action of the second elastic member 604, the second sound member 601 moves forward relative to the sound housing 602 until it collides with the sound housing 602 or the fixed window 603, and the collision makes a sound.

3. The post-use state.

The forward movement of the second acoustic member 601 relative to the acoustic member housing 602 produces a sound when it hits, indicating the end of propulsion. The user removes the simulated injection pen from the skin. The needle guard cylinder moves forward relative to the pen body 1 under the action of the skin elastic element 403 until the needle guard cylinder can move forward to the most forward position. The forward movement of the needle protection cylinder drives the unlocking rotary movement member 302 to move forward. The unlocking rotary motion member 302 moves forward until the engaging piece 3021 of the third rail 306 on the outside of the unlocking rotary motion member 302 is disengaged from the third rail 306. The third rail 306 mating element 3021 is the same component as the backstop protrusion 7011, and is hereinafter collectively referred to as the third rail 306 mating element 3021. After the mating member 3021 of the third track 306 on the outer side of the unlocking rotary moving member 302 is disengaged from the third track 306, the unlocking rotary moving member 302 rotates in the first direction relative to the anti-backing blocking member 702 under the action of the first rotary elastic element 308, so that the rear end of the mating member 3021 of the third track 306 abuts against the anti-backing blocking member 702. Since the rear end of the needle guard cylinder abuts against the front end of the unlocking rotary motion member 302, the needle guard cylinder cannot move backward relative to the pen body 1 when the fitting 3021 of the third rail 306 abuts against the backstop blocking member 702.

The post-use state is the pre-reset state.

4. The in-process state is reset.

The user inserts the reset pin 2 from the front end of the pen body 1, and the reset pin 2 pushes the fourth rail fitting piece 6011 of the second sound piece 601 to move backward along the fourth sub-rail 6061 of the housing rail 606, while the fourth rail fitting piece 6011 of the second sound piece 601 moves backward along the first sub-rail 6071 of the fixed window rail 607; the reset pin 2 is further pushed, the fourth rail fitting element 6011 of the second sound component 601 enters the fifth sub-rail 6062 of the housing rail 606, so that the second sound component 601 can push the sound component housing 602 to move backwards, meanwhile, the fourth rail fitting element 6011 of the second sound component 601 enters the second sub-rail 6072 of the fixed window rail 607, the second sound component 601 moves backwards along the second sub-rail 6072 relative to the fixed window 603 and rotates simultaneously, and the second sound component 601 moves rotationally relative to the sound component housing 602 along the fifth sub-rail 6062; the fourth rail fitting piece 6011 of the second sound member 601 enters the third sub-rail 6073 of the fixed window rail 607 and moves backward.

The sound device housing 602 is fixedly connected to the piston cylinder 501, and when the sound device housing 602 moves backward under the pushing of the second sound device 601, the piston cylinder 501 moves backward relative to the piston rod 502. The first blocking component 802 fixedly arranged on the side wall of the piston cylinder 501 pushes the unlocking linear motion member 301 to move backwards. The unlocking linear motion member 301 moves backwards, and the second rail 305 engaging piece 3012 on the outer side of the unlocking linear motion member 301 engages with the second rail 305, so that the unlocking linear motion member 301 moves backwards and at the same time the unlocking rotary motion member 302 rotates in the second direction relative to the anti-backing blocking member 702. The unlocking rotary member 302 is rotationally moved in the second direction with respect to the backstop blocking member 702, so that the mating piece 3021 of the third rail 306 on the outer side of the unlocking rotary member 302 is no longer in contact with the backstop blocking member 702, and the mating piece 3021 of the third rail 306 is mated with the third rail 306. The unlocking linear motion member 301 moves backward until the engaging piece 3012 of the second rail 305 outside the unlocking linear motion member 301 disengages from the second rail 305 and enters the unlocking position determining portion 309. The engaging piece 3012 of the second rail 305 outside the unlocking linear motion member 301 is disengaged from the second rail 305 and enters the unlocking positioning portion 309, so that the unlocking linear motion member 301 cannot move forward relative to the unlocking rotational motion member 302.

The reset needle 2 is completely inserted, the cap 10 is arranged at the front end of the pen body 1, and the simulation injection pen is in a reset state.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. An artificial injection pen, comprising: the pen body, the reset structure, the resettable unlocking structure, the resettable triggering structure and the resettable propelling structure;

2. The simulated injection pen of claim 1, further comprising a resettable end-of-advancement sound emitting structure;

3. The simulated injection pen of claim 2, wherein the push-to-end sound emitting structure emits sound by catapult collision; the propulsion end sounding structure comprises a second elastic element, a second sound piece and a second blocking component; one end of the second elastic element is fixed relative to the second blocking part, and the other end of the second elastic element acts on the second sound piece; when the propulsion structure is converted into the propulsion ending state, the second sound piece moves relative to the second blocking component under the action force of the second elastic element, and the second sound piece collides with the second blocking component to make a sound.

4. The simulated injection pen of claim 3, wherein said push-over sound generating structure further comprises a housing spring element, a housing track and a fixed window track; the second barrier comprises a sound housing, a fixed window;

5. The simulated injection pen of any of claims 1 to 4, wherein the advancing structure comprises a piston cylinder, a piston rod and an advancing elastic element; the propelling structure is a piston type structure; the piston rod and the piston cylinder can move relatively;

6. The simulated injection pen of claim 5, wherein the advancing structure further comprises a piston head disposed at the end of the piston rod, the piston head engaging the piston barrel.

7. The simulated injection pen of any of claims 1 to 4 or 6, wherein the unlocking structure comprises an unlocking linear motion member, an unlocking rotational motion member, an unlocking fixing member;

when the unlocking structure is reset to be in an unlocking state from the unlocking state, the unlocking linear motion piece is matched with the unlocking rotary motion piece under the pushing of the resetting structure, the unlocking linear motion piece moves backwards relative to the unlocking fixed piece, and the unlocking rotary motion piece rotates towards the second direction relative to the unlocking fixed piece until the unlocking linear motion piece is in static matching with the unlocking rotary motion piece;

8. The simulated injection pen of claim 7, wherein the unlocking structure further comprises: the unlocking mechanism comprises a first rail, a second rail, an unlocking positioning part, a third rail, a first elastic element and a first rotating elastic element;

9. The simulated injection pen of claim 7, wherein the trigger structure comprises a needle guard cylinder, a skin elastic element;

10. The simulated injection pen of any of claims 1 to 4 or 6 or 8 or 9 wherein the reset mechanism comprises a reset needle; the reset needle is used for being pushed in from the front end of the pen body.

11. The simulated injection pen of any of claims 1 to 4 or 6 or 8 or 9, further comprising a cap;

the cap is detachably connected with the front end of the pen body;

the resetting structure is arranged at the rear end of the pen cap.

12. The simulated injection pen of any of claims 1 to 4 or 6 or 8 or 9 wherein the pen body is provided with a window, the window being transparent or hollowed out to allow a user to view the advancing structure through the window.

13. The simulated injection pen of any of claims 1 to 4 or 6 or 8 or 9, further comprising a resettable backstop structure;

the backstop structure is arranged inside the pen body;

14. The simulated injection pen of claim 13, wherein the backstop structure comprises a rotational lock member, a second rotational spring element and a backstop blocking member;

15. The simulated injection pen of any of claims 1 to 4 or 6 or 8 or 9 or 14, further comprising a resettable advancement initiation sound structure;

the propelling initial sounding structure is arranged inside the pen body;

16. The simulated injection pen of claim 15, wherein the push-to-start sounding structure sounds by catapult-assisted impact; the propelling initial sounding structure comprises an initial elastic element, a first sound piece and a first blocking part; one end of the starting elastic element is fixed relative to the pen body, and the other end of the starting elastic element acts on the first sound piece; when the unlocking structure is changed into the unlocked state, the first sound piece moves relative to the first blocking part under the action of the starting elastic element, and the first sound piece collides with the first blocking part to make a sound.

17. The simulated injection pen of claim 16, wherein the advancing structure comprises a piston cylinder, a piston rod and an advancing elastic element; the propelling structure is a piston type structure; the piston rod and the piston cylinder can move relatively;