CN215275411U - Transdermal drug delivery device - Google Patents

Abstract

The utility model relates to the technical field of medical apparatus, in particular to a transdermal drug delivery device, which comprises a pilot assembly, an adjusting assembly and a main frame assembly in threaded connection with the adjusting assembly; the end parts of the pilot assembly and the adjusting assembly are correspondingly provided with buckle structures; the pilot assembly is internally provided with a skin breaking assembly, and the skin breaking assembly comprises a support frame and a plurality of skin breaking elements; the support frame is connected with the main frame assembly, and the inside intercommunicating pore that is provided with of main frame assembly makes the liquid medicine pass through the intercommunicating pore and get into the broken skin subassembly. The transdermal drug delivery device provided by the utility model breaks the skin and supplies the drug liquid through the skin breaking component arranged in the guide component; still set up adjusting part and with adjusting part threaded connection's body frame subassembly, drive broken skin subassembly through rotating the body frame subassembly and along axial displacement to adjust the degree of depth that broken skin subassembly punctures skin, its simple structure, convenient operation, the practicality is strong, has good application prospect.

Description

Transdermal drug delivery device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to transdermal drug delivery device.

Background

In modern medical beauty treatment field, various nutrient substances are usually coated on the surface of human skin in physical forms of water, milk, cream and the like, but cannot break through the horny layer of the human skin and be effectively absorbed by the bottom layer of the skin.

In recent years, silicon cell or fine metal needle technology is available in the market, and a high-frequency mechanical vibration mode is utilized to puncture the surface of the skin to open a channel so that the applied nutrient solution can penetrate into the deep layer of the skin to be absorbed.

However, the silicon cells can only break through the surface layer of the skin. The metal micro-needle can break through the epidermis of the skin and go deep into the dermis, but the thickness of the epidermis layer and the cutin layer of different people is different, even if the thickness of the epidermis layer and the dermis layer of the skin at different parts of the same person is different, the needle insertion depth is naturally different, the muscle bottom channel cannot be opened when the needle insertion depth is too shallow, and pain nerves can be triggered or subcutaneous tissues can be damaged when the needle insertion depth is too deep. The micro needle devices on the market are either complicated in separate operation of drug administration and skin breaking steps, or the drug administration and the skin breaking can be synchronously carried out only by using a drug administration container and an electric instrument, so that the micro needle devices need to be used in professional medical beauty institutions and are high in cost. To solve the above problems, there is a need in the market for a transdermal drug delivery device capable of adjusting the depth of needle withdrawal, effectively performing skin breaking and synchronous drug delivery, and facilitating medical and cosmetic professional structure and home operation.

SUMMERY OF THE UTILITY MODEL

In order to solve the complex deficiency of the transdermal drug delivery device mentioned in the prior art, the utility model provides a transdermal drug delivery device, which comprises a pilot assembly contacted with the skin, an adjusting assembly arranged at the tail part of the pilot assembly and a main frame assembly in threaded connection with the adjusting assembly;

the pilot assembly comprises a pilot body, an interface part communicated with the pilot body and a clamping part arranged at the tail part of the pilot body; the clamping part and the end part of the adjusting component are correspondingly provided with a clamping structure so that the pilot component and the adjusting component are connected in a buckling manner through the clamping structure;

the skin breaking assembly is arranged in the pilot assembly and comprises a plurality of skin breaking elements for breaking the skin and a supporting frame connected with the skin breaking elements; the support frame is connected with the main frame assembly, and the inside of the main frame assembly is provided with a communicating hole so that the liquid medicine can enter the skin breaking assembly through the communicating hole.

In one embodiment, a base cover assembly used for stabilizing the skin breaking assembly is further arranged in the pilot assembly, the outer wall of the base cover assembly is fixedly connected with the inner wall of the pilot body, and the inner wall of the base cover assembly is movably connected with the main frame assembly.

In one embodiment, the pilot body, the base cover assembly and the support frame are of a square structure, so that the main frame assembly can limit circumferential rotation of the skin breaking assembly when driving the skin breaking assembly to move axially.

In one embodiment, the skin-breaking elements are in the form of a plurality of elongated needles.

In an embodiment, a plurality of guide sleeve portions are arranged inside the guide body, and a through hole is arranged inside the guide sleeve portions, so that the skin breaking element penetrates through the through hole to eject the guide body.

In one embodiment, the middle part of the base cover assembly is provided with a plurality of boss parts corresponding to the skin breaking elements, and the boss parts are provided with through holes for the skin breaking elements to penetrate through.

In one embodiment, the support frame comprises a base connected with the main frame assembly and a hole platform part used for installing the skin breaking element, and the base is communicated with the inside of the hole platform part so that liquid medicine can enter the skin breaking element through the base and the hole platform part.

In one embodiment, the skin breaking element comprises a plane part and flat hole parts uniformly distributed on the plane part, and the edge of each flat hole part is provided with a plurality of skin breaking parts vertical to the plane part; the top of the skin-breaking part is sharp so as to break the skin.

In one embodiment, a protruding structure for limiting the base cover assembly is arranged on the inner wall of the pilot body.

In one embodiment, the outer surface of the main frame component is further provided with a thread structure, so that the main frame component can be externally connected with other devices.

Based on the above, compared with the prior art, the transdermal drug delivery device provided by the utility model breaks the skin and supplies the liquid medicine through the skin breaking component arranged in the pilot component; simultaneously, still set up adjusting part and with adjusting part threaded connection's body frame subassembly, drive broken skin subassembly through rotating the body frame subassembly and along axial displacement to adjust the degree of depth that broken skin subassembly punctures skin, its simple structure, convenient operation, the practicality is strong, has good application prospect.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts; in the following description, the drawings are illustrated in a schematic view, and the drawings are not intended to limit the present invention.

FIG. 1 is a perspective view of one embodiment of a transdermal delivery device provided by the present invention;

FIG. 2 is a cross-sectional exploded view of one embodiment of a transdermal delivery device provided by the present invention;

FIG. 3 is a perspective view of a skin disrupting element according to one embodiment;

FIG. 4 is a cross-sectional view of one embodiment of a transdermal delivery device provided by the present invention;

FIG. 5 is a perspective view of another embodiment of a transdermal delivery device provided by the present invention;

FIG. 6 is an enlarged view of a portion of the area A of the skin disrupting element of FIG. 5;

fig. 7 is a cross-sectional view of another embodiment of a transdermal delivery device provided by the present invention.

Reference numerals:

100 pilot assembly 500 adjustment assembly 400 Main frame Assembly

110 leading body 120 interface 130 clip part

510 buckling structure 200 skin breaking component 210 skin breaking element

220 support 410 communication hole 300 base cover assembly

140 guide sleeve part 141 guide hole 310 boss part

221 base 222 hole stage 211 plane part

212 flat hole portion 213 skin-breaking portion 111 projection structure

420 thread structure 142 base 143 boss

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; the technical features designed in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that all terms (including technical terms and scientific terms) used in the present invention have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, and cannot be construed as limiting the present invention; it will be further understood that terms, as used herein, should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The utility model provides a transdermal drug delivery device, which comprises a pilot assembly 100 contacted with the skin, an adjusting assembly 500 arranged at the tail part of the pilot assembly 100 and a main frame assembly 400 in threaded connection with the adjusting assembly 500; the pilot assembly 100 comprises a pilot body 110, an interface part 120 communicated with the pilot body 110 and a clamping part 130 arranged at the tail part of the pilot body 110; the clamping portion 130 and the end of the adjusting assembly 500 are correspondingly provided with a clamping structure 510, so that the pilot assembly 100 and the adjusting assembly 500 are connected in a clamping manner through the clamping structure 510; the skin-breaking assembly 200 is arranged in the pilot assembly 100, and the skin-breaking assembly 200 comprises a plurality of skin-breaking elements 210 for breaking the skin and a support frame 220 connected with the skin-breaking elements 210; the support frame 220 is connected with the main frame assembly 400, and the main frame assembly 400 is internally provided with a communication hole 410 so that the liquid medicine can enter the peeling assembly 200 through the communication hole 410.

In specific implementation, as shown in fig. 1 and 2, the transdermal delivery device comprises a pilot assembly 100, an adjusting assembly 500 connected with the pilot assembly 100, and a main frame assembly 400 in threaded connection with the adjusting assembly 500; wherein the thread length of the main frame assembly 400 is longer than the thread length of the adjustment assembly 500 by a distance consistent with the maximum depth of the skin penetration of the peeling element 210 according to the actual working requirements, and the main frame assembly 400 is axially movable when the main frame assembly 400 is rotated. The pilot assembly 100 comprises a pilot body 110, an interface part 120 and a clamping part 130; the pilot body 110 is of a hollow structure and is used for placing the skin-breaking assembly 200, and the skin-breaking assembly 200 comprises a plurality of skin-breaking elements 210 and a support frame 220; the skin-breaking elements 210 can be distributed on the support frame 220 in an array, the number of the arrays can be 1, 3, 5, 7, 9, 12, 24, 36, 42 and the like, and the array pattern formed by the array elements can be circular or rectangular or other patterns; the support frame 220 is connected with the main frame assembly 400, meanwhile, a communication hole 410 is arranged in the main frame assembly 400, the communication hole 410 is communicated with the interior of the support frame 220, liquid medicine enters the skin along with the skin breaking element 210 through the communication hole 410 and the support frame 220, and the communication hole 410 can be externally connected with a plurality of interface channels to provide the liquid medicine according to working requirements. It should be noted that the main frame assembly 400, the supporting frame 220, and the skin breaking element 210 should be connected in a sealing manner to ensure that the liquid medicine does not leak and the liquid medicine flows smoothly, and preferably, the main frame assembly, the supporting frame assembly 220, and the skin breaking element 210 can be bonded by glue and filled in the assembly gap thereof to form connection and sealing quickly. The clamping portion 130 is provided with a protrusion, and the adjusting component 500 corresponding to the protrusion is also provided with a protrusion, which form a clamping structure 510 for clamping the pilot component 100 and the adjusting component 500.

The pilot body 110 is provided with a connecting part 120 communicated with the pilot body 110, and the pilot body 110 forms a seal with the skin, so that the compressed air of the device can cause air pressure resistance during the skin breaking work, and the connecting part 120 is communicated with the atmosphere to play the roles of reducing resistance and balancing air pressure; the interface part 120 can also be connected with a negative pressure pipeline for providing negative pressure to suck skin into the inner space of the pilot body 110 and then the skin is broken by the skin breaking assembly 200; can also be connected with a pipeline for supplying nutrient liquid medicine from the outside to provide the required liquid medicine; preferably, the number of the interface part 120 is 1 or more than one satisfying the above functions.

The working principle is as follows: the pilot assembly 100 is placed on the skin needing transdermal drug delivery, the adjusting assembly 500 is fixed, the main frame assembly 400 is rotated to drive the skin breaking assembly 200 to move axially, so that the skin breaking element 210 slowly extends out of the pilot assembly 100, the depth of the skin entering the skin of the skin breaking element 210 is adjusted by controlling the rotation amount, and meanwhile, the liquid medicine can be injected into the skin through the communication hole 410, the supporting part 220 and the skin breaking element 210, so that the transdermal drug delivery function is realized.

The transdermal drug delivery device provided by the utility model breaks the skin and supplies the drug liquid through the skin breaking component arranged in the guide component; simultaneously, still set up adjusting part and with adjusting part threaded connection's body frame subassembly, drive broken skin subassembly through rotating the body frame subassembly and along axial displacement to adjust the degree of depth that broken skin subassembly punctures skin, its simple structure, convenient operation, the practicality is strong, has good application prospect.

Preferably, a base cover assembly 300 for stabilizing the peeling assembly 200 is further disposed in the pilot assembly 100, an outer wall of the base cover assembly 300 is fixedly connected with an inner wall of the pilot body 110, and an inner wall thereof is movably connected with the main frame assembly 400.

In specific implementation, as shown in fig. 4 and 7, since the skin-breaking component 200 has a certain length that can meet the skin penetration depth, in order to ensure the stability of the skin-breaking component 200 during axial movement during operation, the pilot component 100 is further provided with a base cover component 300 for stabilizing the skin-breaking component 200, the outer wall of the base cover component 300 is fixedly connected with the inner wall of the pilot body 110, and the inner wall of the base cover component is movably connected with the main frame component 400, that is, the main frame component 400 drives the skin-breaking component 200 to stably move on the inner wall of the base cover component 300 during operation. It should be noted that, instead of the base cover assembly 300, one skilled in the art may directly allow the inner wall of the pilot assembly 100 to be in clearance fit with the main frame assembly 400 or the peeling assembly 200 to achieve stable movement thereof.

Preferably, the pilot body 110, the base cover assembly 300 and the supporting frame 220 are of a square structure, so that the main frame assembly 400 can limit circumferential rotation of the skin breaking assembly 200 when driving the skin breaking assembly to move axially.

In specific implementation, as shown in fig. 1 and 5, the pilot body 110, the base cover assembly 300 and the support frame 220 are of square structures, and during operation, the adjusting assembly 500 is stationary, the main frame assembly 400 rotates to drive the support frame 220 to move, and the support frame 220 is of a square structure and limits circumferential rotation of the support frame, so that the support frame 220 drives the skin breaking assembly 200 to move only in an axial direction, and skin breaking operation can be stably performed.

Preferably, the peeling elements 210 are in the form of a plurality of elongated needles.

In one embodiment, as shown in fig. 3, the peeling elements 210 are in the shape of a plurality of elongated needles, and preferably, the peeling elements 210 are made of metal or silicon wafers, wherein the metal peeling elements 210 may be stainless steel, silver, copper/copper alloy, or gold-plated on the peeling elements 210 made of the above materials. In addition, the skin-breaking element 210 can be a hollow needle as shown in the left drawing of fig. 3 or a solid needle as shown in the right drawing. According to the actual working requirement, when the skin-breaking element 210 is a hollow needle, the liquid medicine enters the skin-breaking assembly 200 through the main frame assembly 400 and then can be injected into the skin through the skin-breaking element 210, on the other hand, the thinner the skin-breaking element is, the less the injury to the human body is, the lower the pain feeling is, the inner pipeline of the hollow needle which is small to a certain degree is extremely fine, the liquid medicine is difficult to flow out of the hollow needle, and at the moment, the liquid medicine can also flow in from the interface part 120 through the external pipeline, so that the administration is realized; when the skin-breaking element 210 is a solid needle, the liquid medicine flows in from the interface part 120 through the external pipeline, and then the skin-breaking and the administration are synchronously realized; meanwhile, the solid needle can further reduce the size of the skin breaking element 210 compared with a hollow needle and under the condition of ensuring rigidity, and the solid needle is beneficial to reducing the cost and the manufacturing difficulty.

Preferably, a plurality of guide sleeve parts 140 are arranged inside the guide body 110, and a through hole 141 is arranged inside the guide sleeve parts 140, so that the skin breaking element 210 penetrates the guide body 110 from the through hole 141.

In specific implementation, as shown in fig. 4, since the peeling element 210 is in the shape of a slender needle, in order to protect the peeling element 210, the guide sleeve part 140 corresponding to the peeling element 210 in number and position is disposed inside the guide body 110, and the through hole 141 is disposed inside the guide sleeve part 140, and is located at the front end of the guide body 110 (where the front end of the guide body 110 refers to a position in contact with the skin), it is ensured that the peeling element 210 has supporting and guiding functions when extending out a large distance, and further ensured that the peeling element 210 has rigidity when being subjected to resistance. Preferably, the guide sleeve part 140 includes a base surface 142 connected to the pilot body 110 and a plurality of bosses 143 corresponding to the number and positions of the bark breaking elements 210, wherein a through hole 141 is formed inside the boss 143, and the cross section of the through hole 141 is gradually reduced to be slightly larger than the needle-shaped bark breaking elements 210 along the front end direction of the pilot body 110, which is convenient for installation; preferably, the guide sleeve part 140 is a circular truncated cone with a certain height, and the height of the circular truncated cone extends to the front end surface of the guide body 110 contacting with the skin.

Preferably, the middle part of the base cover assembly 300 is provided with a plurality of boss parts 310 corresponding to the peeling elements 210, and the boss parts 310 are provided with through holes for the peeling elements 210 to penetrate through.

In specific implementation, as shown in fig. 2, in order to further protect the elongated needle-shaped skin breaking elements 210 and prevent the problem of insufficient rigidity caused by the extending length process of the skin breaking elements 210 during operation, in addition to the base cover assembly 300 being fixed to the pilot assembly 100 and being in movable contact with the main frame assembly 400, the middle portion of the base cover assembly 300 is further provided with a plurality of boss portions 310 corresponding to the skin breaking elements 210, the boss portions 310 are provided with through holes for the skin breaking elements 210 to penetrate through, and the through holes are located in the middle portions of the needle-shaped skin breaking elements 210, so that the skin breaking elements 210 can be further supported and guided when being skewed due to processing or operation. Preferably, the cross-section of the through hole is gradually reduced along the front end of the pilot body 110.

Preferably, the supporting frame 220 comprises a base 221 connected with the main frame assembly 400 and a hole platform part 222 for installing the skin breaking element 210, wherein the base 221 is communicated with the inside of the hole platform part 222, so that the liquid medicine enters the skin breaking element 210 through the base 221 and the hole platform part 222.

Preferably, the peeling element 210 comprises a planar portion 211 and flat hole portions 212 uniformly distributed on the planar portion 211, and the edges of the flat hole portions 212 are provided with a plurality of peeling portions 213 perpendicular to the planar portion 211; the top of the skin-breaking portion 213 is sharp to break the skin.

In specific implementation, as shown in fig. 5, 6 and 7, the utility model provides still another kind of flaky broken skin component 210 of foil, broken skin component 210 includes plane portion 211 and evenly distributed flat hole portion 212 on plane portion 211, and wherein flat hole portion 212 is polygon structure or round hole shape structure, flat hole portion 212 border is provided with the broken skin portion 213 of a plurality of perpendicular to plane portion 211, just the top of broken skin portion 213 is sharp-pointed form to the skin of piercing through. During specific work, after the skin-breaking element 210 moves towards the skin surface layer to contact with the skin surface layer, the skin-breaking part 213 enters through the skin, and the flat hole part 212 provides a passage port for the liquid medicine, so that the liquid medicine can enter the skin along the skin-breaking part 213 to achieve the purpose of synchronous administration.

Preferably, a protrusion 111 for limiting the base cover assembly 300 is disposed on an inner wall of the pilot body 110.

In specific implementation, as shown in fig. 7, in order to assemble the base cover assembly 300 to a fixed position of the main body 110, a protrusion structure 111 is disposed on an inner wall of the pilot body 110, and the protrusion structure 111 can limit the base cover assembly 300.

Preferably, the outer surface of the main frame assembly 400 is further provided with a thread structure 420, so that the main frame assembly 400 can be externally connected with other devices.

In specific implementation, the outer surface of the main frame assembly 400 is further provided with a thread structure 420, so that the main frame assembly 400 can be externally connected with other devices, for example, a manual handle or an electric instrument can be connected to manually or electrically adjust the extending distance of the skin-breaking assembly 200. It should be noted that the thread structure 420 may be an internal thread structure or an external thread structure, and may also be a snap structure or the like.

To sum up, the utility model provides a pair of transdermal device of dosing utilizes the mode of manual mode or external electric instrument to press repeatedly the skin surface through transdermal assembly and carries out broken skin in succession, has the skin that the broken skin degree of depth can be adjusted to the adjusting part and adapt to different thickness simultaneously, prevents that broken skin is not enough or too dark. In addition, the multifunctional skin-breaking device is provided with other interfaces for connecting negative pressure to assist skin breaking or provide balance with the external atmospheric pressure, has a simple structure, is convenient to operate, has multiple functions, enriches the using modes and using occasions of medical cosmetology, facilitates professional cosmetology technicians, particularly common people operating at home, reduces the using difficulty and the risk degree, and has high use value and economic value.

In addition, it will be appreciated by those skilled in the art that although a number of problems exist in the prior art, each embodiment or aspect of the present invention may be improved only in one or a few aspects, without necessarily simultaneously solving all the technical problems listed in the prior art or in the background. It will be understood by those skilled in the art that nothing in a claim should be taken as a limitation on that claim.

Although terms such as a pilot assembly, an adjustment assembly, a main frame assembly, a pilot body, an interface portion, a snap-in structure, a peeling assembly, a peeling element, a support frame, a communication hole, a base cover assembly, a guide sleeve portion, a through hole, a boss portion, a base, a boss portion, a flat portion, a peeling portion, a protrusion structure, a screw structure, a base, a boss, etc., are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention; the terms "first," "second," and the like in the description and in the claims, and in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A transdermal drug delivery device characterized by: comprises a pilot assembly (100) contacted with the skin, an adjusting assembly (500) arranged at the tail part of the pilot assembly (100) and a main frame assembly (400) in threaded connection with the adjusting assembly (500);

the pilot assembly (100) comprises a pilot body (110), an interface part (120) communicated with the pilot body (110) and a clamping part (130) arranged at the tail part of the pilot body (110); the clamping part (130) and the end part of the adjusting component (500) are correspondingly provided with a clamping structure (510), so that the pilot component (100) and the adjusting component (500) are connected in a buckling manner through the clamping structure (510);

a skin breaking assembly (200) is arranged in the pilot assembly (100), and the skin breaking assembly (200) comprises a plurality of skin breaking elements (210) for penetrating the skin and a support frame (220) connected with the skin breaking elements (210); the support frame (220) is connected with a main frame component (400), and a communicating hole (410) is formed in the main frame component (400) so that liquid medicine can enter the skin breaking component (200) through the communicating hole (410).

2. The transdermal drug delivery device according to claim 1, wherein: the pilot assembly (100) is internally provided with a base cover assembly (300) used for stabilizing the skin-breaking assembly (200), the outer wall of the base cover assembly (300) is fixedly connected with the inner wall of the pilot body (110), and the inner wall of the base cover assembly is movably connected with the main frame assembly (400).

3. The transdermal drug delivery device according to claim 2, wherein: the guide body (110), the base cover assembly (300) and the support frame (220) are of square structures, so that the main frame assembly (400) can limit circumferential rotation of the skin breaking assembly (200) when driving the skin breaking assembly to move axially.

4. The transdermal drug delivery device according to claim 3, wherein: the skin breaking elements (210) are in the shape of a plurality of elongated needles.

5. The transdermal drug delivery device according to claim 3, wherein: the inner part of the pilot body (110) is provided with a plurality of guide sleeve parts (140), and the inner part of the guide sleeve parts (140) is provided with a through hole (141) so that the skin breaking element (210) penetrates through the guide body (110) from the through hole (141).

6. The transdermal drug delivery device according to claim 3, wherein: the middle part of the base cover assembly (300) is provided with a plurality of boss parts (310) corresponding to the skin breaking elements (210), and through holes for the skin breaking elements (210) to penetrate through are formed in the boss parts (310).

7. The transdermal drug delivery device according to claim 3, wherein: the support frame (220) comprises a base (221) connected with the main frame assembly (400) and a hole platform part (222) used for installing the skin breaking element (210), wherein the base (221) is communicated with the inside of the hole platform part (222), so that liquid medicine enters the skin breaking element (210) through the base (221) and the hole platform part (222).

8. The transdermal drug delivery device according to claim 2, wherein: the peeling element (210) comprises a plane part (211) and flat hole parts (212) uniformly distributed on the plane part (211), and the edge of each flat hole part (212) is provided with a plurality of peeling parts (213) vertical to the plane part (211); the top of the skin-breaking part (213) is sharp so as to break the skin.

9. The transdermal drug delivery device according to claim 8, wherein: the inner wall of the pilot body (110) is provided with a protruding structure (111) used for limiting the base cover assembly (300).

10. The transdermal delivery device according to any one of claims 1-9, wherein: the outer surface of the main frame assembly (400) is also provided with a thread structure (420), so that the main frame assembly (400) can be externally connected with other devices.

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