Electric microneedle injection device

Abstract

The utility model discloses an electric micro-needle injection device which is provided with a shell, a micro-needle injection head and a driving frame, a protection channel and a sliding supply cavity are arranged in the shell, the micro-needle injection head is connected to the protection channel in a sliding mode, and the micro-needle injection head is provided with a liquid medicine cavity and a plurality of micro-needles. Liquid medicine is injected into the liquid medicine cavity and then is output through a microneedle of the microneedle injection head, the driving frame slides in a reciprocating mode, so that the microneedle enters or stretches out of the protection channel, the microneedle can pierce the skin when stretching out of the protection channel, and medicine injection is achieved. According to the micro-needle injection device, only the micro-needle injection head needs to be replaced according to actual injection requirements, so that a matched micro-needle injection device does not need to be additionally and independently arranged, and the use cost of the micro-needle injection device is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a kind of electric microneedle injection device. BACKGROUND

[0002] Microneedle treatment is through microneedle treatment some skin and hair care injection treatment mode, generally set up multiple microneedles and simultaneously inject liquid medicine.

[0003] As the patent document of announcement No. CN205287116U discloses electric microneedle injection instrument, is provided with shell, microneedle transmission mechanism and injection ejector rod mechanism.Microneedle transmission mechanism and injection ejector rod mechanism are installed in the inside of can shell, and microneedle transmission mechanism includes microneedle ejector rod.Injection ejector rod mechanism includes piston ejector rod.Microneedle transmission mechanism moves back and forth by microneedle ejector rod and drives microneedle needle seat, so that microneedle is inserted into skin, and injection ejector rod mechanism realizes the injection of liquid medicine to microneedle by piston ejector rod, and finally enters skin, so as to realize microneedle injection.

[0004] Although the existing microneedle injection head can facilitate the injection of liquid medicine into the skin, the electric microneedle is difficult to disassemble, and different types of microneedle injectors need to be replaced when microneedle injection is performed for different conditions, thereby increasing the use cost of the microneedle injector. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the above technical deficiencies, and proposes an electric microneedle injection device to solve the technical problem that the use cost of the microneedle injector is increased due to the need to replace different types of microneedle injectors when the microneedle injector is used for microneedle injection for different conditions in the prior art.

[0006] To achieve the above technical purpose, the utility model takes the following technical scheme:

[0007] In the first aspect, the utility model provides an electric microneedle injection device, which comprises:

[0008] A housing is provided with a protection channel and a sliding cavity inside;

[0009] A microneedle injection head is slidably connected to the protection channel, and the microneedle injection head is provided with a socket;

[0010] A drive frame is slidably connected to the sliding cavity, and the end of the drive frame is fixed with two spaced elastic frames, which can enter the socket by inward elastic contraction and outward elastic expansion to be clamped with the socket.

[0011] In some embodiments, the end surface of the elastic frame is provided with a first taper surface, the supply socket can press the first taper surface by moving the driving frame towards the microneedle injection head, and the supply socket can drive the two elastic frames to contract by pressing the first taper surface.

[0012] In some embodiments, the elastic frame is further provided with a second taper surface opposite to the first taper surface, the supply socket can press the second taper surface by moving the driving frame away from the microneedle injection head, and the supply socket can drive the two elastic frames to contract by pressing the second taper surface.

[0013] In some embodiments, the shell comprises a housing, a threaded connecting sleeve, an adjusting sleeve, and an adjusting head, the threaded connecting sleeve is arranged in the housing, the adjusting sleeve is threadedly connected to the inner side of the threaded connecting sleeve, the adjusting head is threadedly connected with the adjusting sleeve, and the protection channel is arranged in the adjusting head.

[0014] In some embodiments, the shell further comprises a lock sleeve, one end of the lock sleeve is arranged in the threaded connecting sleeve, and the other end of the lock sleeve is threadedly connected with the adjusting sleeve and abuts against the threaded connecting sleeve to lock the adjusting sleeve.

[0015] In some embodiments, the shell further comprises a support sleeve, the support sleeve is slidingly connected to the inner side of the housing and opposite to the adjusting head, the sliding cavity is located in the inner side of the adjusting head and the support sleeve, and the adjusting sleeve is arranged in the support sleeve and fixedly connected with the support sleeve.

[0016] In some embodiments, the shell further comprises a control cavity arranged in the shell, the electric microneedle injection device further comprises a driving module, the driving module is arranged in the control cavity and connected with the driving frame to drive the driving frame to reciprocatingly slide, the inner side of the support sleeve is further provided with a mounting cavity, the driving module comprises a driver, a connecting frame, and a compression spring, one end of the connecting frame is detachably fixed to the driving frame, the other end of the connecting frame is slidingly connected to the mounting cavity, the driver is arranged in the control cavity and opposite to the connecting frame, and the compression spring is arranged in the mounting cavity and abuts against the connecting frame and the inner wall of the mounting cavity to drive the connecting frame to connect the driver.

[0017] In some embodiments, the driver comprises a motor and a driving head, the driving head is opposite to the connecting frame, one side of the driving head close to the connecting frame is provided with a driving slope surface, the connecting frame abuts against the driving slope surface through the elastic force of the compression spring, so that the driving slope surface drives the connecting frame to reciprocatingly move through the rotation of the driving head, and the motor is arranged in the control cavity and connected with the driving head to drive the driving head to rotate.

[0018] In some embodiments, the microneedle injection head is further provided with a drug liquid cavity and a plurality of microneedles, and the electric microneedle injection device further comprises an injector fixed to the shell and connected with the microneedle injection head for injecting drug liquid into the drug liquid cavity.

[0019] In some embodiments, the microneedle injection head is further provided with a liquid injection connector connected with the injector through a liquid injection pipe, and the adjusting head is provided with a sliding port, and the liquid injection connector is slidingly connected to the sliding port.

[0020] Compared with the prior art, the electric microneedle injection device provided by the utility model has the advantages that the shell, the microneedle injection head and the driving frame are arranged, the inside of the shell is provided with a control cavity, a protection channel and a sliding cavity, the microneedle injection head is slidingly connected to the protection channel, in the injection of drug liquid, the drug liquid is injected into the microneedle injection head and then output through the microneedles of the microneedle injection head, so that the drug liquid is injected into the skin, the driving frame is slidingly connected to the sliding cavity and connected to the microneedle injection head, the driving frame makes the microneedles enter or protrude from the protection channel through reciprocating sliding, the microneedles can be inserted into the skin when protruding from the protection channel, at this time, the injection of drug liquid can be carried out by controlling the injector, the microneedles can be separated from the skin when entering the protection channel, at this time, the injection of drug liquid is stopped, the driving frame is provided with two elastic frames spaced from each other, when the microneedle injection head is connected to the driving frame, only the two elastic frames need to be contracted, the elastic frames are inserted into the inside of the microneedle injection head through the insertion port, the detachable fixing of the microneedle injection head and the driving frame can be realized through the clamping of the microneedle injection head, when the microneedle injection head needs to be disassembled, only the elastic frames need to be separated from the inside of the microneedle injection head, so that the detachable fixing of the microneedle injection head and the driving frame is realized, the microneedle injection device only needs to replace the microneedle injection head according to actual injection requirements, so that the microneedle injection device does not need to be additionally equipped with a matched microneedle injection device, and the use cost of the microneedle injection device is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the electric microneedle injection device provided by the utility model embodiment;

[0022] Figure 2 is a top view schematic view of the hidden shell and the injector of the electric microneedle injection device provided by the utility model embodiment;

[0023] Figure 3 is a sectional view along Figure 2 the A-A line in the figure.

[0024] Reference signs in the figure:

[0025] 10 - shell 11 - control cavity 12 - protection channel

[0026] 13 - sliding cavity 14 - threaded connecting sleeve 15 - adjusting sleeve

[0027] 16 - adjusting head 17 - locking sleeve 18 - supporting sleeve

[0028] 20 - microneedle injection head 21 - liquid cavity 22 - insertion port

[0029] 23 - liquid injection connecting head 30 - syringe 31 - liquid injection pipe

[0030] 40 - driving frame 41 - elastic frame 42 - sliding sleeve

[0031] 50 - driving module 51 - driver 52 - connecting frame

[0032] 53 - compression spring 60 - liquid injection driving motor 70 - lead screw

[0033] 80 - driving seat 161 - sliding port 181 - installation cavity

[0034] 411 - first taper surface 412 - second taper surface 511 - motor

[0035] 512 - driving head 513 - driving inclined surface 521 - rubber sleeve DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0037] In order to solve the technical problem that the microneedle injector needs to replace different types of microneedle injectors when microneedle injection is carried out for different diseases in the prior art, the utility model can realize the disassembly and replacement of the microneedle injection head, thereby reducing the use cost of the microneedle injector.

[0038] The electric microneedle injection device provided by the utility model embodiment, as shown in the figure, comprises a shell 10, a microneedle injection head 20, a syringe 30 and a driving frame 40. Figures 1-3 The inside of the shell 10 is provided with a control cavity 11, a protection channel 12 and a sliding cavity 13; the microneedle injection head 20 is slidingly connected to the protection channel 12 and connected to the syringe 30; the driving frame 40 is slidingly connected to the sliding cavity 13 and detachably fixed to the microneedle injection head 20.

[0039] Specifically, the electric microneedle injection device is provided with a shell 10, a microneedle injection head 20, an injector 30 and a driving frame 40. The interior of the shell 10 is provided with a protection channel 12 and a sliding cavity 13. The microneedle injection head 20 is slidingly connected to the protection channel 12. The microneedle injection head 20 is provided with a liquid cavity 21 and a plurality of microneedles. The injection of the liquid into the liquid cavity 21 and then the output of the microneedles of the microneedle injection head 20 can realize the injection of the liquid into the skin. The driving frame 40 is slidingly connected to the sliding cavity 13 and connected to the microneedle injection head 20. The driving frame 40 can make the microneedles enter or protrude from the protection channel 12 through reciprocating sliding. When the microneedles protrude from the protection channel 12, they can be inserted into the skin. At this time, the injection of the medicine can be controlled by the injector 30. When the microneedles enter the protection channel 12, they can be separated from the skin. At this time, the injection of the medicine is stopped. Since the microneedle injection head 20 can be detached from the driving frame 40, the microneedle injection device only needs to replace the microneedle injection head 20 according to the actual injection requirement, so that the microneedle injection device does not need to be additionally and separately provided with a matched microneedle injection device, thereby reducing the use cost of the microneedle injection device.

[0040] In one of the embodiments, the microneedle injection head 20 is further provided with a liquid cavity 21 and a plurality of microneedles 22. The injector 30 is fixed to the shell 10 and connected to the microneedle injection head 20, and is used for injecting liquid into the liquid cavity 21. Specifically, the injector 30 can inject the liquid into the liquid cavity 21 and then output the liquid through the microneedles 22, so as to realize the injection of the liquid.

[0041] In one of the embodiments, as shown in Figure 3 The microneedle injection head 20 is provided with a socket 22. The end of the driving frame 40 is fixed with two spaced elastic frames 41. The two elastic frames 41 can enter the socket 22 through inward elastic contraction and expand outwardly to be clamped with the sidewall of the socket 22. Specifically, the driving frame 40 is provided with two spaced elastic frames 41. When the microneedle injection head 20 is connected to the driving frame 40, the two elastic frames 41 only need to be contracted, so that the elastic frames 41 are inserted into the interior of the microneedle injection head 20 from the socket 22. The detachable fixing of the microneedle injection head 20 to the driving frame 40 can be realized through the clamping of the microneedle injection head 20. When the microneedle injection head 20 needs to be detached, the elastic frames 41 only need to be separated from the interior of the microneedle injection head 20.

[0042] In one of the embodiments, as shown in Figures 1-3 The shell 10 includes a shell body, a threaded connection sleeve 14, an adjusting sleeve 15 and an adjusting head 16. The threaded connection sleeve 14 is arranged in the shell body. The adjusting sleeve 15 is threadedly connected to the inner side of the threaded connection sleeve 14. The adjusting head 16 is threadedly connected to the adjusting sleeve 15. The protection channel 12 is arranged in the adjusting head 16.

[0043] Specifically, the threaded sleeve 14 is fixed on the shell, the adjusting sleeve 15 is screwed on the inner side of the threaded sleeve 14, the axial adjustment of the adjusting sleeve 15 is realized by rotating, the adjusting head 16 is screwed with the adjusting sleeve 15, the fixed of the adjusting sleeve 15 can be realized, the protection channel 12 is arranged on the inner side of the adjusting sleeve 15, the microneedle injection head 20 can be arranged, the adjusting sleeve 15 can drive the adjusting head 16 and the microneedle injection head 20 to move by rotating, so as to realize the adjustment of the position of the microneedle injection head 20, so that the position of the microneedle injection head 20 can be adjusted according to different types of microneedle injection heads 20 and different injection requirements under the driving distance limitation of the driving frame 40, and the penetration depth of the microneedle injection head 20 into the skin can be adjusted to achieve the best treatment effect.

[0044] In one embodiment, as shown in Figures 1-3 The shell 10 further includes a lock sleeve 17, one end of the lock sleeve 17 is sleeved on the threaded sleeve 14, the other end of the lock sleeve 17 is screwed with the adjusting sleeve 15 and abuts against the threaded sleeve 14 to lock the adjusting sleeve 15. Specifically, after the adjustment of the microneedle injection head 20 is completed, the lock sleeve 17 is screwed on the adjusting sleeve 15 and gradually sleeved on the threaded sleeve 14, and then abuts against the adjusting sleeve 15, so that the adjusting sleeve 15 can be locked by the lock sleeve 17, and the adjusting sleeve 15 cannot be further rotated, and after the adjustment of the microneedle injection head 20 is needed, the lock sleeve 17 can be screwed out.

[0045] In one embodiment, as shown in Figures 1-3 The shell 10 further includes a support sleeve 18, the support sleeve 18 is slidingly connected to the inner side of the shell and opposite to the adjusting head 16, the sliding cavity 13 is located on the inner side of the adjusting head 16 and the support sleeve 18, and the adjusting sleeve 15 is sleeved on the support sleeve 18 and fixedly connected with the support sleeve 18. Specifically, the support sleeve 18 can cooperate with the adjusting head 16 to form the sliding cavity 13 for the sliding of the driving frame 40, and can provide support and limiting for the adjusting sleeve 15.

[0046] In this embodiment, a plurality of sealing rings are arranged between the support sleeve 18 and the adjusting sleeve 15.

[0047] In one embodiment, the injector 30 is fixed on the shell 10, the injector 30 is connected with the microneedle injection head 20, in the injection work of the liquid medicine, the injector 30 injects the liquid medicine into the liquid medicine cavity 21, and then the liquid medicine is output through the microneedle of the microneedle injection head 20 to realize the injection of the liquid medicine into the subcutaneous tissue.

[0048] In one embodiment, as shown in Figure 1 and 3As shown, the microneedle injection head 20 is further provided with a liquid injection connector 23, the liquid injection connector 23 is connected with the syringe 30 through a liquid injection pipe 31, the adjusting head 16 is provided with a sliding port 161, and the liquid injection connector 23 is slidingly connected to the sliding port 161. Specifically, after the connection of the microneedle injection head 20 and the driving frame 40 is completed, the liquid injection pipe 31 is connected with the needle cylinder of the syringe 30 and the liquid injection connector 23, and the liquid injection connector 23 is slidingly connected to the sliding port 161 by sliding, so that the liquid injection connector 23 is limited, the microneedle injection head 20 is prevented from rotating, and the microneedle injection is facilitated.

[0049] In the embodiment, as shown in Figure 3 The two ends of the driving frame 40 are provided with sliding sleeves 42, and the driving frame 40 is slidingly connected to the adjusting head 16 and the supporting sleeve 18 through the sliding sleeves 42, and the sliding sleeves 42 limit the sliding distance by abutting against the adjusting head 16 and the supporting sleeve 18.

[0050] It can be understood that the microneedle injection head 20 can be threadedly connected with the driving frame 40, and the detachable fixing with the driving frame 40 can be realized by connecting the microneedle injection head 20 with the driving frame 40 through bolts and the like.

[0051] In the embodiment, the syringe 30 is fixed to the shell 10 and connected with the microneedle injection head 20, and is used for injecting liquid medicine into the liquid medicine cavity 21.

[0052] In one of the embodiments, as shown in Figure 3 The end surface of the elastic frame 41 is provided with a first taper surface 411, the insertion port 22 can press the first taper surface 411 by moving the driving frame 40 towards the microneedle injection head 20, and the insertion port 22 can drive the two elastic frames 41 to contract by pressing the first taper surface 411. Specifically, by providing the first taper surface 411, when the microneedle injection head 20 is connected with the driving frame 40, the insertion port 22 of the microneedle injection head 20 is only required to abut against the first taper surface 411, and by pressing towards the driving frame 40, the two elastic frames 41 can be contracted, and then the elastic frames 41 enter the interior of the microneedle injection head 20 and are expanded, so that the installation of the driving frame 40 can be realized.

[0053] In one of the embodiments, as shown in Figure 3As shown, the elastic frame 41 is further provided with a second taper surface 412 opposite to the first taper surface 411, the second taper surface 412 is pressed by the socket 22 through the movement of the driving frame 40 away from the microneedle injection head 20, and the two elastic frames 41 are driven to contract through the pressing of the second taper surface 412. Specifically, through the arrangement of the second taper surface 412, when the microneedle injection head 20 is disassembled from the driving frame 40, and by pulling the microneedle injection head 20 away from the driving frame 40, the two elastic frames 41 can be contracted, and then the elastic frame 41 enters the socket 22, and by further pulling out from the socket 22, the disassembly of the driving frame 40 can be realized.

[0054] In one embodiment, as shown in the drawings, Figures 1-3 As shown, the electric microneedle injection device further comprises a driving module 50 arranged in the control cavity and connected with the driving frame 40, for driving the driving frame 40 to slide back and forth, the inner side of the supporting sleeve 18 is further provided with a mounting cavity 181, the driving module 50 comprises a driver 51, a connecting frame 52 and a compression spring 53, one end of the connecting frame 52 is detachably fixed to the driving frame 40, the other end of the connecting frame 52 is slidably connected to the mounting cavity 181, the driver 51 is arranged in the control cavity 11 and opposite to the connecting frame 52, and the compression spring 53 is arranged in the mounting cavity 181 and abuts against the connecting frame 52 and the inner wall of the mounting cavity 181, for driving the connecting frame 52 to connect the driver 51.

[0055] Specifically, the connecting frame 52 can always be connected with the driver 51 through the elastic force of the compression spring 53, the driver 51 can drive the driving frame 40 to move through the driving of the connecting frame 52, and finally realize the driving of the microneedle injection head 20, through the above structure, while realizing the driving of the microneedle injection head 20, the disassembly and replacement of the driving frame 40 and the connecting frame 52 can be facilitated.

[0056] In this embodiment, the adjusting sleeve 15 can drive the supporting sleeve 18 to slide synchronously during the sliding process, so as to stretch or contract the compression spring 53.

[0057] It can be understood that the driver 51 can be any driving device that can realize the driving in the axial direction of the connecting frame 52, such as a lead screw 70 module, a pneumatic cylinder or a hydraulic cylinder.

[0058] In one embodiment, as shown in the drawings, Figures 2-3As shown, the driver 51 comprises a motor 511 and a driving head 512, the driving head 512 is opposite to the connecting frame 52, the driving head 512 is provided with a driving slope 513 on the side close to the connecting frame 52, the connecting frame 52 is abutted against the driving slope 513 through the elastic force of the compression spring 53, so that the driving slope 513 drives the connecting frame 52 to reciprocate through the rotation of the driving head 512, the motor 511 is installed in the control cavity 11 and connected with the driving head 512, for driving the driving head 512 to rotate.

[0059] In the embodiment, the end of the connecting frame 52 abutting against the driving slope 513 is provided with a rubber sleeve 521, the rubber sleeve 521 can prevent the driving head 512 and the connecting frame 52 from being abraded.

[0060] In the embodiment, as shown, Figures 1-2 As shown, the electric microneedle injection device further comprises a liquid injection driving motor 60, a lead screw 70 and a driving seat 80, the driving seat 80 is slidingly connected to the shell and connected with the piston of the syringe 30, the driving module 50 is installed in the control cavity 11 and connected with the driving seat 80, for driving the driving seat 80 to slide. Specifically, in the driving process of the syringe 30, the liquid injection driving motor 60 drives the lead screw 70 to rotate, so as to drive the driving seat 80 to move axially along the lead screw 70, so that the driving seat 80 pushes the piston, and the injection of the liquid medicine into the microneedle injection head 20 is realized.

[0061] In order to better understand the present application, the following will be combined Figures 1 to 3 The technical scheme of the present application is described in detail as follows: when the microneedle injection work is performed, the microneedle injection assisting device is aligned with the injection site by the microneedle injection head 20, the motor 511 drives the microneedle driving head 512 to rotate, the driving slope 513 drives the connecting frame 52 to move axially through the rotation of the driving head 512, so that the microneedles of the microneedle injection head 20 extend out of the protection channel 12, and the microneedles of the microneedle injection head 20 penetrate into the skin, then the liquid injection driving motor 60 drives the driving seat 80 to push the piston of the syringe 30, so that the syringe 30 quantitatively inputs the liquid medicine into the microneedle injection head 20, thereby realizing the input of the liquid medicine into the injection site, after the input of the liquid medicine is completed, the motor 511 drives the driving head 512 to further rotate, so that the microneedles of the microneedle injection head 20 retreat into the protection channel 12, at this time, the microneedle injection head 20 is aligned with another injection site, and the microneedle injection is performed on the injection site, and finally the injection is completed through the above-mentioned cycle.

[0062] The specific embodiments of the present application described above do not constitute a limitation of the protection scope of the present application. Any other corresponding changes and modifications made according to the technical concept of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An electrically powered microneedle injection device, characterized in that, The application relates to an electric micro-needle injection device. The device comprises a shell, a protection channel and a sliding cavity arranged inside the shell; a micro-needle injection head connected to the protection channel in a sliding mode, the micro-needle injection head being provided with a socket; a driving frame connected to the sliding cavity in a sliding mode, the end of the driving frame being fixed with two elastic frames arranged at intervals, the two elastic frames being capable of being retracted inwards to enter the socket and being expanded outwards to be clamped with the socket.

2. The electromicroneedle injection device of claim 1, wherein, The end surface of the elastic frame is provided with a first taper surface, the socket being capable of pressing the first taper surface by moving the driving frame towards the micro-needle injection head, and the socket being capable of driving the two elastic frames to be retracted by pressing the first taper surface.

3. The electromicroneedle injection device of claim 2, wherein, The elastic frame is further provided with a second taper surface opposite to the first taper surface, the socket being capable of pressing the second taper surface by moving the driving frame away from the micro-needle injection head, and the socket being capable of driving the two elastic frames to be retracted by pressing the second taper surface.

4. The electromicroneedle injection device according to any one of claims 1-3, wherein, The shell comprises a shell body, a threaded connecting sleeve, an adjusting sleeve and an adjusting head, the threaded connecting sleeve being arranged in the shell body, the adjusting sleeve being threadedly connected to the inner side of the threaded connecting sleeve, the adjusting head being threadedly connected with the adjusting sleeve, and the protection channel being arranged in the adjusting head.

5. The electromotive microneedle injection device of claim 4, wherein, The shell further comprises a lock sleeve, one end of the lock sleeve being arranged in the threaded connecting sleeve, the other end of the lock sleeve being threadedly connected with the adjusting sleeve and abutting against the threaded connecting sleeve to lock the adjusting sleeve.

6. The electromotive microneedle injection device of claim 4, wherein, The shell further comprises a supporting sleeve, the supporting sleeve being connected to the inner side of the shell body in a sliding mode and being opposite to the adjusting head, the sliding cavity being located in the inner side of the adjusting head and the supporting sleeve, the adjusting sleeve being arranged in the supporting sleeve and being fixedly connected with the supporting sleeve.

7. The electromotive microneedle injection device of claim 6, wherein, The shell is further provided with a control cavity, the electric micro-needle injection device further comprising a driving module arranged in the control cavity and connected with the driving frame, the driving module being used for driving the driving frame to reciprocate, the inner side of the supporting sleeve being further provided with a mounting cavity, the driving module comprising a driver, a connecting frame and a compression spring, one end of the connecting frame being detachably fixed with the driving frame, the other end of the connecting frame being connected to the mounting cavity in a sliding mode, the driver being arranged in the control cavity and being opposite to the connecting frame, and the compression spring being arranged in the mounting cavity and abutting against the connecting frame and the inner wall of the mounting cavity to drive the connecting frame to connect the driver.

8. The electromotive microneedle injection device of claim 7, wherein, The driver comprises a motor and a driving head, the driving head being opposite to the connecting frame, one side of the driving head close to the connecting frame being provided with a driving slope, the connecting frame abutting against the driving slope through the elastic force of the compression spring, so that the driving slope drives the connecting frame to reciprocate through the rotation of the driving head, and the motor is arranged in the control cavity and connected with the driving head to drive the driving head to rotate.

9. The electromotive microneedle injection device of claim 4, wherein, The micro-needle injection head is provided with a liquid cavity and a plurality of micro-needles, and the electric micro-needle injection device further comprises a syringe fixed with the shell and connected with the micro-needle injection head, the syringe being used for injecting liquid medicine into the liquid cavity.

10. The electromotive microneedle injection device of claim 9, wherein, The microneedle injection head is further provided with a liquid injection connector, the liquid injection connector is connected with the syringe through a liquid injection pipe, the adjusting head is provided with a sliding opening, and the liquid injection connector is slidingly connected to the sliding opening.

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