CN213100072U

CN213100072U - Ejection mechanism of card type bottle bin and electronic injection pen

Info

Publication number: CN213100072U
Application number: CN202020272514.3U
Authority: CN
Inventors: 侯耀钧
Original assignee: Zhuhai Kaisheng Medical Technology Co ltd
Current assignee: Zhuhai Kaisheng Medical Technology Co ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2021-05-04
Anticipated expiration: 2030-03-06

Abstract

The utility model discloses a card formula bottle storehouse pop-up mechanism and electronic type injection pen that has it, pop-up mechanism includes: storehouse body, buckle subassembly, first elastic component and release subassembly. The two ends of the bin body are open, a cavity capable of accommodating the card type bottle is formed in the bin body, a needle head can be installed at the lower end of the bin body, and one end of the bin body is rotatably connected with the main body of the injection device. The buckle component comprises a female buckle part arranged on the bin body and a male buckle part arranged on the main body, and the male buckle part can be clamped with the female buckle part to lock the bin body in the shell of the injection equipment; one end of the first elastic piece is arranged on the bin body, and the other end of the first elastic piece is arranged on the main body and used for driving the bin body to rotate for a certain angle relative to the shell so that one end of the bin body extends out of the shell; the releasing component is arranged on the shell and used for enabling the male buckle part to release the female buckle part. According to above-mentioned technical scheme's pop-up mechanism, the cassette bottle storehouse body can pop out and withdraw from casing one side repeatedly, and the quick replacement of being convenient for or installation cassette bottle, the mounting means is simple and convenient, and need not to dismantle any part in the change process.

Description

Ejection mechanism of card type bottle bin and electronic injection pen

Technical Field

The utility model relates to the field of medical equipment, in particular to pop-up mechanism of card formula bottle storehouse and have electronic type injection pen of this mechanism.

Background

The cartridge bottle is similar to a syringe without a push rod and is equivalent to a "bottomless bottle". The front part of the bottle is provided with a rubber sealing protective injection needle, the bottle mouth is sealed by a rubber plug aluminum cover, and the tail part is sealed by a rubber piston. The cartridge is often placed into a reusable cartridge injection holder or pen for use.

The traditional injection pen mounting cartridge bottle is usually required to be detached from the injection pen, so that the cartridge bottle can be installed in the injection pen, the mounting step of the cartridge bottle is complicated, the use is inconvenient, and the loss of components can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an ejection mechanism in card formula bottle storehouse, card formula bottle storehouse can follow the casing and pop out, need not to carry out part dismouting, convenient to use to the injection pen during installation card formula bottle.

The utility model discloses still provide an electronic type injection pen of the pop-up mechanism that has above-mentioned cassette bottle storehouse.

First aspect, according to the utility model discloses a card formula bottle storehouse pop-up structure, include: the injection device comprises a bin body, a needle holder and a control device, wherein the upper end and the lower end of the bin body are opened, a cavity is formed in the bin body, a needle head can be installed at the lower end of the bin body, and any end of the bin body is rotatably connected with a main body of the injection device; the buckle assembly comprises a female buckle part arranged on the bin body and a male buckle part arranged on the main body, and the male buckle part can be clamped with the female buckle part to lock the bin body in the shell of the injection equipment; the first elastic piece is arranged on the bin body at one end and on the main body at the other end and used for driving the bin body to rotate for a certain angle relative to the main body so that one end of the bin body extends out of the shell; the releasing assembly is arranged on the shell and used for enabling the male buckle part to release the female buckle part; when the male buckle part is clamped with the female buckle part, elastic potential energy is accumulated by the elastic component, and when the male buckle part releases the female buckle part, the elastic potential energy is released by the elastic component.

According to the utility model discloses pop-up mechanism in card formula bottle storehouse has following beneficial effect at least: the user can make public knot portion and box portion break away from through triggering release assembly, makes the storehouse body rotatory certain angle relative to the casing under the drive of the kinetic energy that the conversion of the elastic potential energy of first elastic component formed, makes the one end of the storehouse body stretch out outside the casing. The user can stretch out the opening of one end with the card type bottle from the storehouse body this moment and insert in the storehouse body, again with the storehouse body push back in the casing, elastic potential energy is accumulated in first elastic component deformation, and public knot portion and box portion lock are simultaneously the storehouse body and can lock in the casing. Through the technical scheme, the user only needs to change the installation change that the cassette bottle restores the storehouse body and can realize the cassette bottle through triggering the release subassembly again, and is easy and simple to handle and swift.

According to some embodiments of the utility model, female knot portion for set up in a first hook-like structure of inversion of storehouse body upper end, public knot portion include with the movable fastener and the one end of connecting of advancing mechanism with the fastener is connected, the other end with the second elastic component that the main part is connected, the fastener lower extreme be equipped with female hook-like structure that matches of knot portion.

According to the utility model discloses a some embodiments, release subassembly is including setting up the release switch on the casing and setting up in the inside transmission structure of casing, transmission structure one end with release switch connects, transmission structure's the other end with pin thread portion connects, transmission structure can with release switch's trigger action transmits for pin thread portion makes pin thread portion with female separation of detaining.

According to some embodiments of the utility model, the transmission structure is a lever structure, a force arm of transmission structure with release switch connects, another force arm of transmission structure with pin thread portion connects, the pivot of transmission structure set up in on the casing.

According to some embodiments of the present invention, the first elastic member is a torsion spring disposed on the bin body, the bin body is provided with a cylindrical boss, and the first elastic member is disposed on the cylindrical boss.

In a second aspect, an electronic injection pen according to an embodiment of the present invention includes: an ejection mechanism for a cartridge according to an embodiment of the first aspect; a housing; the propelling mechanism is arranged in the shell and used for pushing the cassette bottle and the needle head; an injection mechanism for pushing the piston on the cartridge; the control panel is arranged in the shell and used for controlling the propelling mechanism and the injection mechanism to work; the operation panel is arranged on the shell, is electrically connected with the control panel and is used for inputting operation information and displaying state information; and the storage battery is arranged in the shell and used for providing electric energy for the propelling mechanism, the injection mechanism, the control panel and the operation panel.

According to the utility model discloses electronic type injection pen has following beneficial effect at least: have the utility model discloses the ejection mechanism in card formula bottle storehouse of first aspect embodiment can realize the quick replacement of card formula bottle, can realize the automatic injection function simultaneously.

According to the utility model discloses a some embodiments still include and pop out protection architecture, pop out protection architecture set up in on the casing, advancing mechanism is not when safe position, pop out protection architecture will release the subassembly pins, makes the unable action of release subassembly.

According to the utility model discloses a some embodiments, pop out protection architecture and include a V-arrangement lever and a third elastic component, the pivot of V-arrangement lever set up in on the casing, the one end of third elastic component with V type lever connection, the other end of third elastic component with the casing is connected, advancing mechanism is not when safe position, the first arm of force of V type lever is in under the drive of third elastic component with release assembly offsets and hinders the release assembly action, advancing mechanism is when safe position, the second arm of force of V type lever with transmission structure offsets, makes the first arm of force of V type lever with release assembly separation.

According to the utility model discloses a some embodiments still include the door, door one end with the casing rotates to be connected, the door border is equipped with the buckle, when the door was closed, release assembly passed through the buckle will the door pins, during the release assembly action, the door is in open under the drive of the storehouse body.

According to some embodiments of the utility model, be equipped with the door sensor on the casing, the door sensor with control panel electric connection, the door sensor is used for detecting the switching state of door.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of an internal structure of an electronic injection pen according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another view angle of the electronic injection pen according to the embodiment of the present invention;

FIG. 3 is a schematic view of the installation of the bin body according to the embodiment of the present invention;

fig. 4 is a schematic view illustrating the installation of the male buckle portion according to the embodiment of the present invention;

fig. 5 is an installation schematic diagram of a release switch according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a pop-up protection structure according to an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

fig. 8 is a schematic view of a usage state of the ejection mechanism of the cassette bottle magazine according to the embodiment of the present invention;

fig. 9 is a partially enlarged schematic view of a portion B in fig. 8.

A bin body 100, a bin body buckle 101, a buckle component 110, a female buckle part 111, a clamping piece 112, a first elastic piece 120, a release component 130, a release switch 131, a transmission structure 132, a slide block 133 and a push handle 134,

the housing 200 is provided with a plurality of openings,

the push mechanism 300, the bolus support 310,

the injection mechanism (400) is arranged such that,

the ejection protection structure 500, the first moment arm 501, the second moment arm 502,

a bin gate 600 and a detection boss 601.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 and 2, the ejection mechanism of the cartridge magazine according to the first aspect of the embodiment of the present invention is mainly used for an injection apparatus. The ejection mechanism comprises a cartridge body 100 for accommodating the cartridge bottle, a snap assembly 110 for fixing the cartridge body 100 in the injection device housing 200, a first elastic member 120 for driving the cartridge body 100 to eject from the injection device housing 200, and a release assembly 130 for driving the snap assembly 110 to separate. Wherein any end of the bin body 100 is rotationally connected with the main body of the injection device, the two ends of the bin body 100 are open, the lower end of the bin body 100 can be provided with a needle, the bin body 100 can rotate for a certain angle around the joint with the injection device, so that one end of the bin body 100 extends out of the shell 200 of the injection device, and the insertion of the cassette bottle is facilitated. The buckle assembly 110 comprises a female buckle part 111 disposed on the bin body 100 and a male buckle part disposed on the pushing mechanism 300, and when the female buckle part 111 and the male buckle part are buckled, the bin body 100 cannot move relative to the pushing mechanism 300. The first elastic member 120 is disposed on the cartridge body 100, and one end of the first elastic member is connected to the cartridge body 100, and the other end of the first elastic member is connected to the main body of the injection device. The releasing assembly 130 is disposed on the casing 200, and is used for separating the male buckle portion and the female buckle portion 111 of the buckle assembly 110, so that the cartridge body 100 can rotate relative to the injection device body. It is understood that the release member 130 may separate either the male or female portions 111 in a manner that displaces either the male or female portions 111 or deforms the male or female portions 111.

When the cartridge body 100 converges inside the casing 200 of the injection device, the first elastic member 120 deforms and accumulates elastic potential energy; when the releasing assembly 130 is triggered, the male buckle part is separated from the female buckle part 111, the first elastic member 120 converts elastic potential energy into kinetic energy and drives the bin body 100 to rotate for a certain angle relative to the main body of the injection device, so that one end of the bin body 100 extends out of the casing 200, and the card bottle can be conveniently inserted into the bin body 100, as shown in fig. 8. After the cartridge bottle is installed, the chamber 100 is pushed back into the housing 200, the first elastic member 120 is deformed again to accumulate elastic potential energy, and the male fastening portion is fastened with the female fastening portion 111. When a user needs to replace or install the cartridge bottle, only the release assembly 130 on the shell 200 needs to be triggered, the cartridge body 100 can be popped out, the cartridge body 100 is pushed back into the shell 200 after the cartridge bottle is replaced, the replacement of the cartridge bottle can be completed, the replacement process is rapid, any part does not need to be detached in the process, and the part cannot be lost or damaged in the replacement process.

Referring to fig. 1 and 8, according to the electronic injection pen of the embodiment of the second aspect of the embodiment of the present invention, including according to the present invention, the pop-up mechanism of the cassette bottle magazine of the first aspect of the embodiment of the present invention can realize the quick installation and replacement of the cassette bottle, and further includes a housing 200, a propelling mechanism 300, an injection mechanism 400, a control panel and a storage battery which are arranged in the housing 200, and an operation panel which is arranged on the housing 200. The advancing mechanism 300 is used to advance the cartridge and needle to insert the needle to a depth within the subject. The injection mechanism 400 is used to push the piston of the cartridge bottle and inject the drug solution in the cartridge bottle into the subject. The control panel is used for controlling the propulsion mechanism 300 and the injection mechanism 400 to work, the operation panel is electrically connected with the control panel and used for inputting operation information and displaying state information, and the storage battery is used for supplying power to the components needing electric energy in the propulsion mechanism 300, the injection mechanism 400, the control panel and the operation panel. It is understood that the propulsion mechanism 300 and the injection mechanism 400 may employ an elastic member such as a motor or a spring, or a pneumatic member as a power source.

Referring to fig. 1, 4 and 5, in some embodiments, the electronic injection pen further includes an ejection protection structure 500, where the ejection protection structure 500 is used to prevent the cartridge body 100 from being ejected by the release assembly 130 triggered by the user when the cartridge body 100 is pushed downward by the pushing mechanism 300, which may cause accidents such as jamming of internal components or breakage of the needle. When the pushing mechanism 300 is in the safe position, the ejection protection structure 500 does not work, and the release assembly 130 can be normally triggered to eject the cartridge body 100; when the pushing mechanism 300 is not in the safe position, the ejection protection structure 500 abuts against the release component 130, and the resistance release component 130 triggers, so that the cartridge body 100 cannot be ejected, and the safety of the electronic injection pen is ensured. It is understood that the ejection protection structure 500 may be a sensor or a linkage with the propulsion mechanism 300 to detect whether the propulsion mechanism 300 is in a safe position.

Referring to fig. 1 and 9, in some embodiments, the electronic injection pen further includes a bin gate 600, one end of the bin gate 600 is rotatably connected to the casing 200 of the electronic injection pen, and the bin gate 600 can be opened by the bin body 100. The edge of the bin gate 600 is provided with a buckle. When the bin door 600 is closed, the releasing component 130 locks the bin door 600 through a buckle, so that the bin door 600 cannot be opened, and the bin body 100 is prevented from being popped up accidentally. In some embodiments, a door sensor is disposed inside the housing 200 for detecting an opening/closing state of the door 600 to prevent operations such as injection from being performed when the door 600 is opened.

The ejection structure of the cartridge bottle magazine and the electronic injection pen having the same according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 9 as a specific embodiment. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

Referring to fig. 1 to 3, in this embodiment, the storehouse body 100 and the injection mechanism 400 are both arranged on the pushing support 310 of the pushing mechanism 300, the lower part of the storehouse body 100 is symmetrically provided with two round holes, the pushing support 310 is provided with two storehouse body frames with the same interval as the width of the storehouse body 100 on one side, the round through holes with the same size as the round holes on the storehouse body 100 are respectively arranged on the storehouse body 100 frames, and the storehouse body 100 is rotatably connected with the storehouse body frames through the storehouse body buckle 101. The storehouse body is detained 101 for a U-shaped, and the both ends that the U-shaped was detained are equipped with the cylindrical boss that matches with the round hole on the storehouse body 100, and two cylindrical bosses on the storehouse body is detained 101 and is passed the circular through-hole on the storehouse body frame and the round hole on the storehouse body respectively in proper order and make storehouse body 100 with inject support 310 and rotate and be connected. Referring to fig. 2, in this embodiment, the first elastic member 120 is a torsion spring, the cartridge body 100 is provided with a cylindrical boss, the first elastic member 120 is sleeved on the cylindrical boss, and two ends of the first elastic member 120 are respectively connected to the pushing injection stent 310 and the cartridge body 100. It is understood that the first elastic member 120 may be an elastic member such as a spring or a leaf spring disposed between the cartridge body 100 and the bolus support 310.

Referring to fig. 1 and 4, in the present embodiment, the female fastening portion 111 is disposed at the top of the bin body 100 and has a hook-shaped structure. The male buckle portion includes a clamping member 112 and a second elastic member (not shown), the lower end of the clamping member 112 has a second hook structure matching with the first hook structure of the female buckle portion 111, the clamping member 112 is installed in a groove of the bolus injection holder 310, and the clamping member 112 can move up and down along the groove. In this embodiment, the second elastic member is a spring, the second elastic member is disposed in the groove at the upper end of the engaging member 112, the upper end of the second elastic member abuts against the groove wall of the engaging member 112, and the lower end of the second elastic member abuts against the bolus injection holder 310. When the engaging member 112 is engaged with the hook-shaped structure of the female engaging portion 111, the engaging member 112 moves downward under the external force of the releasing assembly 130, so that the two hook-shaped structures are separated, and when the external force disappears, the engaging member 112 is restored under the action of the second elastic member. When the bin body 100 is pushed into the housing 200 from the outside, the first hook-shaped structure of the female fastening portion 111 contacts with the inclined surface of the second hook-shaped structure on the engaging member 112, so that the engaging member 112 moves downward along the inclined surface until the female fastening portion 111 is fastened with the engaging member 112, and the engaging member 112 moves upward under the action of the second elastic member so that the fastening of the female fastening portion 111 with the engaging member 112 is firmer. It is understood that the second elastic member may also be an elastic member such as a spring plate or a torsion spring disposed between the engaging member 112 and the bolus holder 310.

Referring to fig. 1, 4 and 5, in the present embodiment, the releasing assembly 130 includes a releasing switch 131 and a transmission structure 132. When the release switch 131 is triggered, the action is transmitted to the male buckle part through the transmission structure 132, so that the male buckle part is separated from the female buckle part 111. In this embodiment, the release switch 131 includes a push handle 134 and a slider 133, the push handle 134 and the slider 133 are respectively disposed on the outer side of the housing 200 and the inner side of the housing 200, the push handle 134 and the slider 133 sandwich the housing 200 through a slot on the side of the housing 200, and the push handle 134 and the slider 133 can move up and down along the slot. The transmission structure 132 is a lever structure with a rotating shaft disposed on the housing 200, one force arm of the transmission structure 132 contacts with the slider 133, and the other force arm contacts with the upper end of the engaging member 112. The pushing handle 134 is pushed upwards, the slider 133 is driven by the pushing handle 134 to move upwards, the pushing transmission structure 132 is driven to rotate clockwise around the shaft, and the engaging member 112 is driven to move downwards to separate the engaging member 112 from the female buckle portion 111. When the pushing handle 134 loses the external force, the engaging member 112 is driven by the second elastic member to move upward, so that the transmission structure 132 rotates counterclockwise, and the pushing handle 134 returns to the original position. It is understood that the specific structure of the release assembly 130 is designed according to the tripping manner of the buckle assembly 110.

Referring to fig. 1 and 2, in the present embodiment, the pushing mechanism 300 and the injection mechanism 400 both use a motor and a screw rod as a power source and a transmission mechanism, the pushing frame 310 is connected to a slider on the screw rod of the pushing mechanism 300, a piston rod of the injection mechanism 400 is connected to a slider on the screw rod of the injection mechanism 400, and the injection mechanism 400 is disposed on the pushing frame 310.

Referring to fig. 1, 5 and 7, in the present embodiment, the pop-up protection structure 500 includes a V-shaped lever and a third elastic member (not shown) disposed on the V-shaped lever. The rotating shaft of the V-shaped lever is disposed on the housing 200. When the pushing mechanism 300 is pushed out a distance downwards, and the pushing mechanism 300 is not in the safe position, the V-shaped lever rotates towards the inside of the paper in fig. 1 under the action of the third elastic member until the first force arm 501 of the V-shaped lever presses on the slider 133, as shown in fig. 7, it is difficult for a user to push the pushing handle 134 to operate the releasing assembly 130, so as to prevent the bin body 100 from popping out in this state to cause the damage of the device. When the pushing mechanism 300 moves upwards, the pushing bracket 310 abuts against the second force arm 502 of the V-shaped lever, the V-shaped lever is driven by the pushing bracket 310 to rotate towards the paper-out direction of fig. 1, until the pushing mechanism 300 reaches the safety position, the first force arm 501 of the V-shaped lever is separated from the sliding block 133, at this time, the bin body 100 can be safely ejected, and a user can make the releasing assembly 130 work by pushing the handle 134, so that the bin body 100 is ejected. It is understood that the pop-up protection structure 500 is designed according to the working principle of the release assembly 130, and the third elastic member may be a spring plate or an elastic member such as a spring.

Referring to fig. 1, 8 and 9, in the present embodiment, the electronic injection pen further includes a bin gate 600, one end of the bin gate 600 is rotatably connected to the housing 200, and a moving direction of the bin gate 600 is the same as a moving direction of the bin body 100 when it is ejected. In this embodiment, the lower end of the door 600 is provided with two cylindrical pins in pairs, the housing 200 is correspondingly provided with two circular blind holes, and the door 600 is rotatably connected by inserting the two cylindrical pins into the two circular blind holes respectively. Referring to fig. 9, a buckle is disposed on the upper side of the bin door 600, and when the bin door 600 is closed, the lower side of the push handle 134 can cooperate with the buckle on the bin door 600 to lock the bin door 600, so that the bin door 600 cannot be opened. When the user pushes the push handle 134 upward, the bin gate 600 is released simultaneously with the bin body 100, and the bin gate 600 is ejected by the bin body 100. In this embodiment, the door sensor is a microswitch, and the door 600 is provided with a detection boss 601. When the door 600 is closed, the detection boss 601 contacts the contact of the door sensor to operate the door sensor, thereby detecting the open/closed state of the door 600. It can be understood that the door sensor may also be a photoelectric switch, a hall sensor, etc., and a corresponding triggering structure needs to be disposed on the door 600.

According to the utility model discloses pop-up mechanism in card formula bottle storehouse and have electronic type injection pen of this structure, the storehouse body can be popped out repeatedly and withdraw from casing one side, and the quick replacement of being convenient for or installation card formula bottle, the mounting means is simple and convenient, and need not to dismantle any part in the change process, can prevent to change in-process part and lose or damage.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. An ejection mechanism for a cartridge vial magazine for an injection device, comprising:

the injection device comprises a bin body, a needle holder and a control device, wherein the upper end and the lower end of the bin body are opened, a cavity is formed in the bin body, a needle head can be installed at the lower end of the bin body, and any end of the bin body is rotatably connected with a main body of the injection device;

the buckle assembly comprises a female buckle part arranged on the bin body and a male buckle part arranged on the main body, and the male buckle part can be clamped with the female buckle part to lock the bin body in the shell of the injection equipment;

the first elastic piece is arranged on the bin body at one end and on the main body at the other end and used for driving the bin body to rotate for a certain angle relative to the main body so that one end of the bin body extends out of the shell;

the releasing assembly is arranged on the shell and used for enabling the male buckle part to release the female buckle part;

when the male buckle part is clamped with the female buckle part, the first elastic piece accumulates elastic potential energy, and when the male buckle part releases the female buckle part, the first elastic piece releases the elastic potential energy.

2. The ejection mechanism for cartridge containers according to claim 1, wherein the female latch portion is an inverted first hook structure disposed at an upper end of the cartridge body, the male latch portion includes a latch member movably connected to the pushing mechanism and a second elastic member having one end connected to the latch member and the other end connected to the main body, and a second hook structure disposed at a lower end of the latch member and matching with the female latch portion.

3. The ejection mechanism of a cartridge according to claim 1, wherein the release assembly includes a release switch disposed on the housing and a transmission structure disposed inside the housing, one end of the transmission structure being connected to the release switch, the other end of the transmission structure being connected to the male buckle portion, the transmission structure being capable of transmitting a triggering action of the release switch to the male buckle portion to separate the male buckle portion from the female buckle portion.

4. The ejection mechanism of a cartridge according to claim 3, wherein the transmission structure is a lever structure, one arm of the transmission structure is connected to the release switch, the other arm of the transmission structure is connected to the male buckle portion, and a rotation shaft of the transmission structure is disposed on the housing.

5. The ejection mechanism for a cartridge according to claim 1, wherein said first resilient member is a torsion spring disposed on said cartridge body, said cartridge body having a cylindrical boss disposed thereon, said first resilient member being fitted over said cylindrical boss.

6. An electronic injection pen, comprising:

the cartridge ejection mechanism according to any one of claims 1 to 5;

a housing;

the propelling mechanism is arranged in the shell and used for pushing the cassette bottle and the needle head;

an injection mechanism for pushing the piston on the cartridge;

the control panel is arranged in the shell and used for controlling the propelling mechanism and the injection mechanism to work;

the operation panel is arranged on the shell, is electrically connected with the control panel and is used for inputting operation information and displaying state information;

the storage battery is arranged in the shell and used for providing electric energy for the propelling mechanism, the injection mechanism, the control panel and the operation panel.

7. The electronic injection pen of claim 6, further comprising an ejection protection structure disposed on the housing, wherein when the advancing mechanism is not in the safety position, the ejection protection structure locks the release assembly such that the release assembly cannot be actuated.

8. The electronic injection pen of claim 7, wherein the ejection protection structure includes a V-shaped lever and a third elastic member, a rotation shaft of the V-shaped lever is disposed on the housing, one end of the third elastic member is connected to the V-shaped lever, the other end of the third elastic member is connected to the housing, when the pushing mechanism is not in the safety position, a first force arm of the V-shaped lever is driven by the third elastic member to abut against the releasing assembly and block the releasing assembly from moving, when the pushing mechanism is in the safety position, a second force arm of the V-shaped lever abuts against a transmission structure of the releasing assembly, so that the first force arm of the V-shaped lever is separated from the releasing assembly.

9. The electronic injection pen of claim 6, further comprising a door, wherein one end of the door is rotatably connected to the housing, a buckle is disposed at an edge of the door, the door is locked by the buckle when the door is closed, and the door is opened by the driving of the bin when the door is closed.

10. The electronic injection pen of claim 9, wherein a door sensor is disposed on the housing, the door sensor is electrically connected to the control board, and the door sensor is configured to detect an open/close state of the door.