Microneedle treatment head and treatment instrument

Abstract

The utility model discloses a microneedle treatment head and therapeutic instrument, relates to medical instrument technical field, the microneedle treatment head comprises a shell assembly and a plurality of microneedles, the shell assembly comprises a shell and a needle plate, an installation cavity is formed in the shell, one end of the shell is a treatment end, the end face of the treatment end is provided with a plurality of needle holes communicated with the installation cavity, and the needle plate is provided with a plurality of needle holes communicated with the installation cavity. The needle holes form a hole array, the end face of the treatment end is sunken to form a negative pressure groove, the negative pressure groove is formed in the peripheral side of the hole array and communicated with an external negative pressure device, and the needle plate is movably installed in the installation cavity; one end of each microneedle is installed on the needle plate, and the other end of each microneedle is inserted into the needle hole. According to the microneedle treatment head provided by the utility model, the skin is sucked through the negative pressure cavity arranged on the outer side of the hole array, so that the skin at the needle holes is in a tightened state, the time and the depth of a plurality of microneedles penetrating into the skin tend to be the same, and the problem that the control precision of the existing microneedle treatment head on the depth of the microneedles penetrating into the skin is poor is solved; and the treatment effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a microneedle treatment head and treatment device. Background Technology

[0002] Microneedling treatment includes radiofrequency microneedling and mesotherapy. By inserting microneedles into the skin and using radiofrequency energy or injecting treatment solutions, it aims to improve skin laxity, promote collagen production, and enhance skin elasticity and hydration. As a result, it has become increasingly popular among young women.

[0003] The microneedling treatment head consists of a housing, a needle plate, and microneedles. The needle plate is housed within the housing, and one end of each microneedle is mounted on the needle plate, while the other end can extend or retract into the housing under the drive of the needle plate. Because skin has a certain degree of elasticity, indentations will appear on the skin surface when the microneedles are inserted, thus affecting the depth of insertion.

[0004] Existing microneedle treatment heads address the aforementioned issues by incorporating a negative pressure chamber on the end face of the housing and placing the microneedles within it. When the microneedle treatment head contacts the skin, the negative pressure within the chamber draws the skin in, allowing the microneedles to be inserted. However, while this improvement alleviates the skin depression problem, the suction of the negative pressure chamber can still cause the skin surface to bulge, especially in the central area of ​​the chamber. This bulging skin can still affect the depth of microneedle insertion, thus impacting the treatment outcome. Utility Model Content

[0005] The main purpose of this invention is to propose a microneedle treatment head and device, which aims to solve the problem of poor control accuracy of the depth of microneedle insertion into the skin when using existing microneedle treatment devices.

[0006] To achieve the above objectives, the present invention proposes a microneedle treatment head, which includes a housing assembly and a plurality of microneedles. The housing assembly includes an outer shell and a needle plate. An installation cavity is formed inside the outer shell. One end of the outer shell is a treatment end. The end face of the treatment end has a plurality of needle holes communicating with the installation cavity. The plurality of needle holes form a hole array. The end face of the treatment end is recessed to form a negative pressure groove. The negative pressure groove is located on the outer periphery of the hole array and communicates with an external negative pressure device. The bottom of the negative pressure groove has a plurality of protrusions. The plurality of protrusions are arranged in an array at intervals. The needle plate is movably installed in the installation cavity. One end of each microneedle is installed on the needle plate, and the other end is inserted into the needle hole.

[0007] In one embodiment of this utility model, two negative pressure grooves are provided, and the two negative pressure grooves are respectively located on opposite sides of the hole array.

[0008] In one embodiment of the present invention, the hole array is rectangular, and the two negative pressure grooves are respectively located on opposite sides of the hole array and extend in a direction parallel to the two sides of the hole array.

[0009] In one embodiment of this utility model, the negative pressure groove is annular and is arranged around the outer periphery of the plurality of pinholes.

[0010] In one embodiment of the present invention, at least two negative pressure grooves are provided, and the at least two negative pressure grooves are combined to form an annular structure and are arranged around the outer periphery of the plurality of pinholes.

[0011] In one embodiment of this utility model, the microneedle treatment head further includes a negative pressure tube and a filter. A negative pressure port communicating with the negative pressure groove is opened on the periphery of the treatment end. One end of the negative pressure tube is connected to the negative pressure port, and the other end is connected to the filter. The negative pressure tube is connected to an external negative pressure device through the filter.

[0012] In one embodiment of this utility model, there are two negative pressure grooves and two negative pressure tubes. Two negative pressure ports are opened on the periphery of the treatment end. Each negative pressure port is connected to a negative pressure groove. One end of each of the two negative pressure tubes is connected to the two negative pressure ports, and the other end of each tube is connected to the filter.

[0013] In one embodiment of the present invention, a cooling groove is provided on the end face of the treatment end, the cooling groove is located on the outer periphery of the negative pressure groove, and the microneedle treatment head further includes a heat dissipation plate, the heat dissipation plate is embedded in the cooling groove and is flush with the end face of the treatment end.

[0014] And / or, multiple microneedles are arranged in a matrix, and at least two positioning marks are provided on the periphery of the treatment end, each positioning mark corresponding to a column of microneedles in the matrix.

[0015] In one embodiment of this utility model, the end face of the treatment end where the needle hole is located is flush with or higher than the end face where the negative pressure groove is located.

[0016] This utility model also proposes a microneedle therapy device, which includes a treatment handle and a microneedle treatment head as described above, wherein one end of the microneedle treatment head opposite to the treatment end is mounted on the treatment handle.

[0017] The microneedle treatment head proposed in this utility model includes a housing assembly and multiple microneedles. The housing assembly includes an outer shell and a needle plate. An installation cavity is formed inside the outer shell. One end of the outer shell is the treatment end. Multiple needle holes communicating with the installation cavity are formed on the end face of the treatment end. A negative pressure groove is formed in the end face of the treatment end. The negative pressure groove is spaced apart on the outer periphery of the multiple needle holes and communicates with an external negative pressure device. The microneedles are mounted on the needle plate, and the needle plate is movably mounted in the installation cavity so that the microneedles can extend to the end face of the treatment end under the action of the needle plate. Because this application places the negative pressure groove on the outer periphery of the needle hole, that is, the needle hole is not placed inside the negative pressure groove, when the end face of the treatment end is pressed against the skin surface, the negative pressure groove and the skin surface form a negative pressure cavity. At this time, the negative pressure cavity placed outside the needle hole draws the skin to keep the skin at the needle hole in a taut state. Therefore, when the microneedles pass through the needle hole and pierce the skin, the time and depth of multiple microneedles piercing the skin tend to be the same, which solves the problem of poor control accuracy of the depth of microneedle piercing in existing microneedle therapy devices and improves the treatment effect.

[0018] Meanwhile, multiple protrusions are provided on the bottom of the negative pressure tank, arranged in an array at intervals. When the skin adheres to the treatment end under the negative pressure adsorption of the negative pressure tank, the skin will bulge and embed itself into the negative pressure tank. At this time, the protrusions can support the skin to ensure that a gap is formed between the skin and the bottom of the negative pressure tank, thereby ensuring that the skin does not adhere to the bottom of the negative pressure tank, thus avoiding obstruction of the transmission of negative pressure in the negative pressure tank, ensuring the uniformity of the adsorption force on the skin in the area corresponding to the negative pressure tank, avoiding excessive relaxation or stretching of the local skin, and reducing possible discomfort and potential skin damage risks. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the microneedle treatment head provided by this utility model;

[0021] Figure 2 for Figure 1 Left view of the microneedle treatment head;

[0022] Figure 3 for Figure 2 Sectional view along AA;

[0023] Figure 4 for Figure 2Sectional view along BB.

[0024] Explanation of icon numbers:

[0025] 10. Housing assembly; 11. Outer shell; 111. Mounting cavity; 112. Treatment end; 113. Needle hole; 114. Negative pressure groove; 114a. Protrusion; 115. Negative pressure port; 116. Positioning mark; 12. Needle plate; 20. Microneedle; 30. Negative pressure tube; 40. Filter; 50. Heat sink.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] This invention proposes a microneedle treatment head.

[0031] Combination Figures 1 to 3As shown, in one embodiment of this utility model, the microneedle treatment head includes a housing assembly 10 and a plurality of microneedles 20. The housing assembly 10 includes a shell 11 and a needle plate 12. An installation cavity 111 is formed inside the shell 11. One end of the shell 11 is a treatment end 112. The end face of the treatment end 112 is provided with a plurality of needle holes 113 communicating with the installation cavity 111. The plurality of needle holes 113 form a hole array. The end face of the treatment end 112 is recessed to form a negative pressure groove 114. The negative pressure groove 114 is located on the outer periphery of the hole array and communicates with an external negative pressure device. A plurality of protrusions 114a are protruding from the bottom of the negative pressure groove 114. The plurality of protrusions 114a are arranged in an array at intervals. The needle plate 12 is movably installed in the installation cavity 111. One end of each microneedle 20 is installed on the needle plate 12, and the other end is inserted into the needle hole 113.

[0032] The microneedle treatment head in this application can be either a water-light microneedle treatment head or a radiofrequency microneedle treatment head.

[0033] In this embodiment, the negative pressure groove 114 is located on the outer periphery of the hole array, rather than within the area including the needle holes 113. When the end face of the treatment end 112 is pressed against the skin surface, the negative pressure groove 114 and the skin surface form a closed negative pressure cavity. At this time, the negative pressure cavity located outside the needle hole 113 can draw in the skin, keeping the skin at the needle hole 113 taut. Therefore, when the microneedles 20 penetrate the skin through the needle holes 113, it can be ensured that the time and depth of penetration of all microneedles 20 into the skin are consistent, solving the problem of low precision control over the penetration depth of microneedles 20 in the prior art, thereby significantly improving the treatment effect.

[0034] Specifically, a guide mechanism, such as a guide rail or linear bearing, is provided between the outer shell 11 and the needle plate 12, so that the needle plate 12 can slide smoothly on a predetermined track, ensuring the consistency of the extension length of all microneedles 20, thereby improving the treatment effect.

[0035] The shape of the negative pressure groove 114 can be designed to adapt to the curvature changes of skin in different areas. For example, it may be designed with a gentler arc for use on the face, while having a straight edge design for other flatter areas of the body. This design allows the negative pressure groove 114 to better match the contours of the human body, improving the effect of negative pressure adsorption. In addition, the negative pressure groove 114 can be set on the outer periphery of the hole array. It can be set as a ring, or two negative pressure grooves 114 can be set on both sides of the hole array. All of the above can achieve the effect of tightening the skin corresponding to the hole array.

[0036] When the treatment end 112 is pressed against the skin surface, the protrusions 114a can form a tiny gap between the skin and the bottom of the negative pressure groove 114, ensuring that the skin does not adhere to the bottom of the negative pressure groove 114 and thus avoiding obstruction of the transmission of negative pressure within the negative pressure groove 114. This ensures the uniformity of the suction force on the skin within the area corresponding to the negative pressure groove 114, thereby preventing excessive relaxation or stretching of the local skin and reducing potential discomfort and the risk of skin damage. Multiple protrusions 114a can be arranged in a rectangular array, a ring array, or a staggered arrangement. The surface of the protrusion 114a facing the opening of the negative pressure groove 114 is a rounded surface to prevent the protrusion 114a from scratching the skin.

[0037] Combination Figure 1 and Figure 2 As shown, in one embodiment of this utility model, there are two negative pressure grooves 114, which are located on opposite sides of the hole array.

[0038] In this embodiment, the two negative pressure grooves 114 are located on opposite sides of the hole array. This design makes the negative pressure suction on the skin on both sides of the hole array symmetrical and more uniform, thereby ensuring that the skin area corresponding to the hole array has a more uniform tension, avoiding excessive stretching of the local skin and causing skin discomfort, while improving the consistency and stability of each microneedle 20 when it enters the skin.

[0039] Furthermore, the spacing and length between the two negative pressure grooves 114 can be adjusted according to actual needs. For example, when treating a larger area, appropriately increasing the spacing can cover a wider range of skin; for smaller or sensitive areas, the spacing can be shortened to concentrate the force and improve local suction. In addition, for areas with large curvature changes, such as the face and neck, the negative pressure grooves 114 can be set to be at least partially arc-shaped to adapt to different skin contours, ensuring that the area corresponding to the pore array always fits tightly against the treatment site.

[0040] Combination Figure 1 and Figure 2 As shown, in one embodiment of this utility model, the hole array is rectangular, and two negative pressure grooves 114 are located on opposite sides of the hole array and extend in a direction parallel to the two sides of the hole array.

[0041] In this embodiment, the hole array is arranged in a rectangular pattern, making the distribution of microneedles 20 within the treatment area more regular and compact, which helps to achieve more precise treatment results. Two negative pressure grooves 114 are located on opposite sides of the rectangular hole array and extend parallel to the sides of the hole array, forming a stable frame structure that surrounds the entire treatment area. When the treatment end 112 is pressed against the skin surface, the closed negative pressure cavity formed by the two negative pressure grooves 114 and the skin can simultaneously draw skin from both sides, keeping the skin in the center of the hole array taut. This dual-sided negative pressure design allows the shape of the negative pressure grooves 114 to better fit the hole array, thereby ensuring that the skin is subjected to uniform tension throughout the treatment area, preventing skin deformation or displacement caused by unilateral negative pressure, and ensuring that all microneedles 20 can penetrate the target location at the same angle and depth, improving treatment effectiveness and safety.

[0042] In one embodiment of the present invention, the negative pressure groove 114 is annular and is arranged around the outer periphery of a plurality of pinholes 113.

[0043] In this embodiment, the annular negative pressure groove 114 is arranged around the entire array of needle holes 113, forming a closed annular structure. When the treatment end 112 is pressed against the skin surface, the closed negative pressure cavity formed by the annular negative pressure groove 114 and the skin can uniformly draw skin from all sides of the hole array, keeping the skin at the needle holes 113 taut. This all-round negative pressure design ensures that the skin is subjected to uniform tension throughout the entire treatment area, preventing skin deformation or displacement caused by unilateral or localized negative pressure, thereby ensuring that all microneedles 20 can be inserted into the target position at the same angle and depth, improving treatment effectiveness and safety.

[0044] Meanwhile, the hole array can be rectangular or circular, and this annular negative pressure groove 114 can better adapt to hole arrays of different shapes.

[0045] In one embodiment of the present invention, at least two negative pressure grooves 114 are provided, and the at least two negative pressure grooves 114 are combined to form an annular structure and are arranged around the outer periphery of a plurality of pinholes 113.

[0046] In this embodiment, at least two negative pressure grooves 114 can be combined to form a continuous or discontinuous annular structure and arranged in an array around the entire needle hole 113. For example, both negative pressure grooves 114 can be in the shape of a straight line and connected end to end to form a rectangular annular structure; alternatively, the negative pressure grooves 114 can be set to an arc shape, with each negative pressure groove 114 connected end to end to form a circular annular structure. By setting at least two negative pressure grooves 114 and combining them to form an annular structure, the suction force at different locations of the skin can be adjusted in a targeted manner by controlling the negative pressure within different negative pressure grooves 114 during treatment.

[0047] Combination Figure 1 , Figure 2 and Figure 4 As shown, in one embodiment of this utility model, the microneedle treatment head further includes a negative pressure tube 30 and a filter 40. A negative pressure port 115 communicating with a negative pressure groove 114 is opened on the periphery of the treatment end 112. One end of the negative pressure tube 30 is connected to the negative pressure port 115, and the other end is connected to the filter 40. The negative pressure tube 30 is connected to an external negative pressure device through the filter 40.

[0048] In this embodiment, the negative pressure port 115 is located on the periphery of the treatment end 112 and is directly connected to the negative pressure groove 114, ensuring that the negative pressure can be quickly and effectively transmitted to the entire negative pressure chamber. The negative pressure tube 30 is made of a flexible material, such as medical-grade silicone or PVC tubing, to ensure that it maintains good sealing and durability under bending and stretching conditions.

[0049] The filter 40 is installed at the end of the negative pressure pipe 30. It not only filters out inhaled impurities, preventing them from entering the negative pressure system and causing blockages or damage, but also purifies the inhaled air, reducing the risk of spreading bacteria and other harmful substances. Furthermore, the filter 40 and the negative pressure pipe 30 are detachably connected for easy replacement and convenient regular maintenance by the user.

[0050] In addition, considering the convenience and safety in actual operation, a flow regulating valve is set on the negative pressure tube 30, allowing users to flexibly adjust the negative pressure intensity according to different treatment needs.

[0051] Combination Figure 1 and Figure 2 As shown, in one embodiment of this utility model, there are two negative pressure grooves 114 and two negative pressure tubes 30. Two negative pressure ports 115 are opened on the periphery of the treatment end 112. Each negative pressure port 115 is connected to a negative pressure groove 114. One end of each of the two negative pressure tubes 30 is connected to the two negative pressure ports 115 respectively, and the other end is connected to the filter 40.

[0052] In this embodiment, two negative pressure grooves 114 are symmetrically distributed on the end face of the treatment end 112, forming a dual-channel negative pressure system. This ensures that negative pressure can be applied evenly to the skin surface from multiple directions, avoiding damage caused by excessive local stretching. The two negative pressure tubes 30 ultimately converge into the same filter 40, thereby reducing the cost of the structure. Furthermore, it facilitates controlling the negative pressure of the two negative pressure grooves 114 to be similar, providing a stable and uniform negative pressure supply and optimizing the user's treatment experience.

[0053] Combination Figures 1 to 3As shown, in one embodiment of the present invention, a cooling groove is provided on the end face of the treatment end 112. The cooling groove is located on the outer periphery of the negative pressure groove 114. The microneedle treatment head also includes a heat dissipation plate 50, which is embedded in the cooling groove and is flush with the end face of the treatment end 112.

[0054] And / or, multiple microneedles 20 are arranged in a matrix, and at least two positioning marks 116 are provided on the periphery of the treatment end 112, each positioning mark 116 corresponding to a column of microneedles 20 in the matrix.

[0055] In this embodiment, when the microneedle treatment head is used for radiofrequency treatment, a significant amount of heat is generated between the microneedle 20 and the skin during the treatment. Therefore, in this embodiment, a heat sink 50 is provided to improve the heat dissipation efficiency of the treatment area and avoid the problem of excessive heat causing skin burns. The heat sink 50 is made of a high-efficiency thermally conductive material (such as aluminum alloy or copper alloy), embedded in a cooling groove, and flush with the end face of the treatment end 112 to ensure a flat appearance and not affect the effect of the treatment head adhering to the skin.

[0056] With or without a heat sink 50 on the treatment end 112, at least two positioning marks 116 are provided on the periphery of the treatment end 112 to improve treatment accuracy. These marks correspond one-to-one with the columns in the microneedle matrix. The positioning marks 116 can be made by laser engraving, screen printing, or adhesive marking to ensure they are clearly visible and resistant to wear. During operation, the physician can quickly and accurately align the microneedles 20 with the target area based on the positioning marks 116, ensuring that each treatment achieves the expected results. This design not only simplifies the operation process but also reduces human error and improves treatment efficiency and consistency.

[0057] Combination Figure 3 As shown, in one embodiment of this utility model, the end face of the treatment end 112 with the needle hole 113 is flush with or higher than the end face with the negative pressure groove 114.

[0058] In this embodiment, when the end face of the treatment end 112 with the needle hole 113 is flush with the end face of the treatment end 112 with the negative pressure groove 114, that is, when the treatment end 112 is in contact with the treatment area of ​​the skin, the negative pressure groove 114 sucks the skin while the opening of the needle hole 113 is also in contact with the skin, so that multiple microneedles 20 can extend from multiple needle holes 113 respectively and simultaneously pierce the skin. Furthermore, since the end face of the treatment end 112 at the needle hole 113 is in contact with the skin, the needle extension length of the microneedle 20 is the same as or similar to the depth of insertion into the skin, thereby improving the treatment effect and making it easier to control the treatment depth of the microneedle 20.

[0059] When the end face of the treatment end 112 with the needle hole 113 is higher than the end face with the negative pressure groove 114, the end face with the needle hole 113 can also be tightly fitted to the skin when the treatment end 112 is in contact with the treatment area of ​​the skin, thereby achieving the above-mentioned treatment effect. In addition, to ensure that the negative pressure groove 114 can effectively suction the skin, the end face with the needle hole 113 should not be too high above the end face of the negative pressure groove 114. In this embodiment, the end face with the needle hole 113 is set to be 3±0.5mm higher than the end face of the negative pressure groove 114, which can improve the treatment effect while ensuring that the negative pressure groove 114 can effectively suction the skin.

[0060] This utility model also proposes a microneedle therapy device, which includes a treatment handle and a microneedle treatment head. The specific structure of the microneedle treatment head is as described in the above embodiments. Since the microneedle therapy device adopts all the technical solutions of all the above embodiments of the microneedle treatment head, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0061] The end of the microneedle treatment head opposite the treatment end 112 is installed on the treatment handle.

[0062] In this embodiment, the microneedle treatment head and the treatment handle are connected via a snap-fit ​​or threaded connection, ensuring the microneedle treatment head is securely mounted on the handle and preventing loosening or detachment during use. This also facilitates head replacement. The connection between the microneedle treatment head and the treatment handle is sealed to ensure airtightness and waterproofing, preventing moisture or contamination of the internal circuitry. The surface of the treatment handle is treated with a non-slip material, increasing grip stability and reducing fatigue during prolonged use. Furthermore, the handle integrates necessary control buttons and a display screen, allowing users to easily adjust negative pressure, monitor the treatment process, and view the device status in real time. These integrated functions simplify the operation process and improve treatment efficiency.

[0063] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A microneedle treatment head, characterized in that, The microneedle treatment head comprises: a shell assembly comprising a shell and a needle plate, an inner part of the shell is formed with a mounting cavity, one end of the shell is a treatment end, an end face of the treatment end is provided with a plurality of needle holes communicating with the mounting cavity, the plurality of needle holes form a hole array, the end face of the treatment end is recessed to form a negative pressure groove, the negative pressure groove is arranged on the outer circumferential side of the hole array and communicates with an external negative pressure device, a groove bottom of the negative pressure groove is provided with a plurality of protrusions, the plurality of protrusions are arranged in an array, and the needle plate is movably installed in the mounting cavity; and a plurality of microneedles, one end of each microneedle is installed on the needle plate, and the other end is inserted into the needle hole.

2. The microneedle treatment head of claim 1, wherein, The negative pressure groove is provided with two negative pressure grooves, and the two negative pressure grooves are respectively located on the opposite sides of the hole array.

3. The microneedle treatment head of claim 2, wherein, The hole array is in a rectangular shape, and the two negative pressure grooves are respectively located on the opposite sides of the hole array and are arranged in a direction parallel to the two sides of the hole array.

4. The microneedle treatment head of claim 1, wherein, The negative pressure groove is annular and annularly arranged on the outer circumferential side of the plurality of needle holes.

5. The microneedle treatment head as described in claim 4, characterized in that, The negative pressure groove is provided with at least two negative pressure grooves, and the at least two negative pressure grooves are combined to form an annular structure and annularly arranged on the outer circumferential side of the plurality of needle holes.

6. The microneedle treatment head of any one of claims 1 to 5, wherein, The microneedle treatment head further comprises a negative pressure pipe and a filter, a circumferential side of the treatment end is provided with a negative pressure port communicating with the negative pressure groove, one end of the negative pressure pipe communicates with the negative pressure port, and the other end of the negative pressure pipe communicates with the filter, and the negative pressure pipe communicates with an external negative pressure device through the filter.

7. The microneedle treatment head of claim 6, wherein, The negative pressure groove and the negative pressure pipe are each provided with two negative pressure grooves, the circumferential side of the treatment end is provided with two negative pressure ports, each negative pressure port communicates with one negative pressure groove, one end of the two negative pressure pipes respectively communicates with the two negative pressure ports, and the other end of the two negative pressure pipes respectively communicates with the filter.

8. The microneedle treatment head of any one of claims 1 to 5, wherein, The end face of the treatment end is provided with a cooling groove, the cooling groove is arranged on the outer circumferential side of the negative pressure groove, the microneedle treatment head further comprises a heat dissipation plate, the heat dissipation plate is embedded in the cooling groove and flush with the end face of the treatment end; And / or, the plurality of microneedles are arranged in a matrix, the circumferential side of the treatment end is provided with at least two positioning marks, and each positioning mark corresponds to a column of microneedles in the matrix.

9. The microneedle treatment head of any one of claims 1 to 5, wherein, The end face of the treatment end provided with the needle hole is flush with or higher than the end face provided with the negative pressure groove.

10. A microneedle therapy device, characterized by, The microneedle treatment instrument comprises a treatment handle and the microneedle treatment head according to any one of claims 1 to 9, and one end of the microneedle treatment head away from the treatment end is installed on the treatment handle.

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