Treatment head, handpiece, and microneedle treatment device

Abstract

Disclosed are a treatment head, a handpiece, and a microneedle treatment device. The treatment head comprises a needle plate assembly, an adapter plate assembly, and a first flexible circuit board. The needle plate assembly is provided with a plurality of needle bodies and is slidably connected to the adapter plate assembly. A driving end of a handle drives the needle plate assembly to move in a first direction relative to the adapter plate assembly. The first flexible circuit board is connected to both the needle plate assembly and the adapter plate assembly. Radiofrequency energy output by the handle sequentially passes through the adapter plate assembly, the first flexible circuit board, and the needle plate assembly, and then controls the plurality of needle bodies to generate heat in partitioned zones. The technical solution of the present application is intended to improve the service life and compactness of the treatment head and enhance the stability and safety in use.

Description

Treatment heads, handpieces and microneedle therapy equipment

[0001] This application claims priority to Chinese patent application No. 202322978391.1 filed on November 2, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of medical devices, and in particular to a treatment head, a hand tool and a microneedle treatment device. Background Art

[0003] Radiofrequency microneedle technology uses tiny microneedles to inject high-energy radiofrequency energy into target groups at different depths, thereby promoting the reorganization and regeneration of collagen. It can be used for facial rejuvenation applications such as skin tightening and scar removal, and can also be used for acne treatment and axillary hyperhidrosis treatment.

[0004] In existing technology, the treatment head adapter plate has numerous contacts. After the treatment head is mounted on the handle, the probes on the handle connect to the contacts on the adapter plate. The treatment head is equipped with several needles, each of which connects to a different contact on the adapter plate. The handle can then output different sequences of RF energy to cause the microneedle treatment head to discharge in different zones.

[0005] However, the problem is that, on the one hand, each needle needs to be connected to the contact on the adapter plate via a separate wire, which can easily cause the wire to break during the high-speed reciprocating motion of the needle plate. Once the wire breaks, the needle body cannot discharge in a partitioned manner, which in turn affects the effect of radiofrequency treatment. On the other hand, setting a wire that matches the number of needles will result in a larger volume of the entire treatment head, and the spacing and arrangement density of the needles cannot be guaranteed, and the aesthetics and practicality are also poor. Secondly, the internal wiring is complex, and stability and safety cannot be effectively guaranteed. Technical issues

[0006] The main purpose of this application is to provide a treatment head, aiming to increase the service life of the treatment head, reduce the size of the treatment head, and improve the stability and safety of the treatment head during use. Technical Solutions

[0007] To achieve the above-mentioned purpose, the treatment head proposed in the present application includes a needle plate assembly, an adapter plate assembly and a first flexible circuit board, and the needle plate assembly is provided with a plurality of needle bodies; the needle plate assembly is slidably connected to the adapter plate assembly, and the driving end of the handle drives the needle plate assembly to move relative to the adapter plate assembly along a first direction; the first flexible circuit board is respectively connected to the needle plate assembly and the adapter plate assembly, and the radio frequency energy output by the handle passes through the adapter plate assembly, the first flexible circuit and the needle plate assembly in turn, and controls the heating of the plurality of needle bodies in partitions.

[0008] In one embodiment of the present application, the treatment head further includes a fixing assembly, and the fixing assembly is used to fix the first flexible circuit board portion to the needle plate assembly and / or the adapter plate assembly.

[0009] In one embodiment of the present application, the needle plate assembly includes a needle plate body and a guide member, a plurality of the needle bodies are installed on the needle plate body, the needle plate body is connected to the first flexible circuit board, a guide hole is provided on the adapter plate assembly, one end of the guide member is connected to the needle plate body, and the other end of the guide member is passed through the guide hole and is slidably connected to the adapter plate assembly.

[0010] In one embodiment of the present application, the fixing assembly includes a first fixing plate and a first fastener, the first end of the first flexible circuit board is located between the first fixing plate and the guide member, a first opening is opened on the first fixing plate, the first fastener is passed through the first opening and connected to the guide member.

[0011] In one embodiment of the present application, the adapter plate assembly includes an adapter plate body and a connector, the adapter plate body is connected to the connector, the adapter plate body is connected to the first flexible circuit board, and the fixing assembly is connected to the connector.

[0012] In one embodiment of the present application, the fixing assembly also includes a second fixing plate and a second fastener, the second end of the first flexible circuit board is located between the second fixing plate and the connecting member, a second opening is opened on the second fixing plate, and the second fastener is passed through the second opening and connected to the connecting member.

[0013] In one embodiment of the present application, the needle plate body, the first flexible circuit board and the adapter plate body are integrally formed.

[0014] In one embodiment of the present application, the length of the first flexible circuit board is greater than the distance between the needle plate body and the adapter plate body.

[0015] In one embodiment of the present application, the treatment head further includes a pressure block and an elastic member, the elastic member is sleeved on the guide member and abuts against one end of the connecting member, and the pressure block is installed on the guide member and abuts against the other end of the elastic member.

[0016] In one embodiment of the present application, the treatment head also includes a shell, the shell has a accommodating cavity with an opening, and a plurality of needle holes are opened at the bottom of the accommodating cavity. The needle plate assembly, the adapter plate assembly and the first flexible circuit board are embedded in the accommodating cavity and connected to the shell, and the needle body extends or retracts through one of the needle holes.

[0017] In one embodiment of the present application, the treatment head is further provided with a negative pressure tube and a suction assembly. The negative pressure tube is provided on the outer peripheral wall of the shell and is connected to the accommodating cavity. One end of the suction assembly is connected to the negative pressure tube.

[0018] In one embodiment of the present application, the shell is made of transparent material.

[0019] The present application also proposes a handpiece, comprising a handle and the treatment head as described above, wherein the handle is detachably connected to the treatment head, and the handle comprises a second flexible circuit board, which is electrically connected to the treatment head so that the handle provides radio frequency energy to the treatment head.

[0020] In one embodiment of the present application, the second flexible circuit board includes a transfer portion, a first control portion, and a second control portion, and the transfer portion, the first control portion, and the second control portion are integrally formed.

[0021] The present application also proposes a microneedle treatment device, comprising the hand tool as described above. Beneficial effects

[0022] The technical solution of the present application includes a needle plate assembly, an adapter plate assembly, and a first flexible circuit board. The needle plate assembly is provided with a plurality of needle bodies. The needle plate assembly is slidably connected to the adapter plate assembly. The needle plate assembly moves relative to the adapter plate assembly along a first direction to achieve reciprocating movement of the needle bodies along the first direction, thereby achieving a planar treatment effect of the treatment head. The first flexible circuit board is connected to the needle plate assembly and the adapter plate assembly respectively. The radio frequency energy output by the handle passes through the adapter plate assembly, the first flexible circuit board, and the needle plate assembly, and controls the heating of the plurality of needle bodies in a partitioned manner. The needle plate assembly and the adapter plate assembly are connected by a flexible circuit board. The radio frequency energy can be transmitted to the plurality of needle bodies on the needle plate assembly through the adapter plate assembly and the first flexible circuit board. The connection of the flexible circuit board can achieve the integration effect of multiple lines, realize high-power transmission, and thereby achieve the effect of controlling the heating of the plurality of needle bodies in a partitioned manner. At the same time, compared with the connection of wires, the flexible circuit board can better withstand multiple repeated movements, thereby improving the stability and safety of the treatment head. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] FIG1 is a schematic structural diagram of an embodiment of a treatment head of the present application;

[0025] FIG2 is a schematic structural diagram of another embodiment of the treatment head of the present application;

[0026] FIG3 is a top view of another embodiment of the treatment head of the present application;

[0027] FIG4 is a schematic cross-sectional view of AA in FIG3 ;

[0028] FIG5 is a schematic structural diagram of an embodiment of the hand tool of the present application;

[0029] FIG6 is a schematic structural diagram of an embodiment of a handle of the hand tool of the present application.

[0030] Description of reference numerals:

[0031] Reference numerals: Reference numerals: 100 hand tool 43 second fixing plate 10 treatment head 43 1 second opening 1 needle plate assembly 44 second fastener 11 needle body 5 pressing block 12 needle plate body 6 elastic member 13 guide member 7 housing 2 adapter plate assembly 71 needle hole 21 adapter plate body 8 negative pressure tube 22 connecting member 9 suction assembly 3 first flexible circuit board 20 handle 4 fixing assembly 201 second flexible circuit board 41 first fixing plate 2011 adapter portion 411 first opening 2012 first control portion 42 first fastener 2013 second control portion

[0032] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

[0033] Implementation Methods of the Application

[0034] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] The present application proposes a treatment head 10 , which aims to increase the service life of the treatment head 10 , reduce the volume of the treatment head 10 , and improve the stability and safety of the treatment head 10 during use.

[0038] In an embodiment of the present application, the treatment head 10 includes a needle plate assembly 1, an adapter plate assembly 2 and a first flexible circuit board 3. The needle plate assembly 1 is provided with a plurality of needle bodies 11; the needle plate assembly 1 is slidingly connected to the adapter plate assembly 2, and the driving end of the handle 20 drives the needle plate assembly 1 to move relative to the adapter plate assembly 2 along a first direction; the first flexible circuit board 3 is respectively connected to the needle plate assembly 1 and the adapter plate assembly 2, and the radio frequency energy output by the handle 20 passes through the adapter plate assembly 2, the first flexible circuit and the needle plate assembly 1 in turn, and controls the heating of the plurality of needle bodies 11 in different zones.

[0039] The technical solution of this application includes a needle plate assembly 1, an adapter plate assembly 2, and a first flexible circuit board 3. The needle plate assembly 1 and the adapter plate assembly 2 use PCBA, which can transmit radiofrequency energy to a plurality of needle bodies 11, thereby enabling the plurality of needle bodies 11 to release heat to perform heat treatment on the treatment area. The first flexible circuit board 3 has a certain degree of bending and stretching ability, and is not easily broken during the reciprocating movement of the needle plate, causing the circuit connection to fail. The needle plate assembly 1 is provided with a plurality of needle bodies 11. The needle plate assembly 1 is slidably connected to the adapter plate assembly 2. The needle plate assembly 1 moves relative to the adapter plate assembly 2 in a first direction to achieve reciprocating movement of the needle bodies 11 in the first direction (the first direction is the first direction in the figure), thereby achieving the planar treatment effect of the treatment head 10. The first flexible circuit board 3 is respectively connected to the needle plate assembly 1 and the adapter plate assembly 2. The radio frequency energy output by the handle 20 passes through the adapter plate assembly 2, the first flexible circuit and the needle plate assembly 1, and controls the partitioned heating of several needle bodies 11. The needle plate assembly 1 and the adapter plate assembly 2 are connected by a flexible circuit board. The radio frequency energy can be transmitted to the several needle bodies 11 on the needle plate assembly 1 through the adapter plate assembly 2 and the first flexible circuit board 3. The connection through the flexible circuit board can achieve the integration effect of multiple lines, realize high-power transmission, and thus achieve the effect of partitioned heating control of several needle bodies 11. At the same time, compared with the wire connection, the flexible circuit board can withstand multiple repeated movements, thereby improving the service life of the treatment head 10.

[0040] In one embodiment of the present application, the treatment head 10 further includes a fixing assembly 4 , which is used to partially fix the first flexible circuit board 3 on the needle plate assembly 1 and / or the adapter plate assembly 2 .

[0041] In this embodiment, the two ends of the first flexible circuit board 3 are further reinforced with the needle plate assembly 1 and the adapter plate assembly 2 respectively through the fixing component 4, which can improve the connection strength of the connection between the first flexible circuit board 3 and the needle plate assembly 1 and / or the adapter plate assembly 2, thereby improving the service life of the treatment head 10.

[0042] In one embodiment of the present application, the needle plate assembly 1 includes a needle plate body 12 and a guide member 13, a number of needle bodies 11 are installed on the needle plate body 12, the needle plate body 12 is connected to the first flexible circuit board 3, a guide hole is opened on the adapter plate assembly 2, one end of the guide member 13 is connected to the needle plate body 12, and the other end of the guide member 13 is passed through the guide hole and is slidably connected to the adapter plate assembly 2.

[0043] In this embodiment, the needle plate assembly 1 includes a needle plate body 12 and a guide member 13. A guide hole is opened on the adapter plate assembly 2. One end of the guide member 13 is arranged on the other side of the needle plate body 12 away from the plurality of needle bodies 11, and the other end is passed through the guide hole and is slidably connected to the adapter plate assembly 2. The matching connection between the guide hole and the guide member 13 can limit the sliding trajectory of the needle plate body 12, so that it moves along the first direction and does not deviate to the side, thereby preventing the needle plate body 12 from tilting and affecting the treatment effect of the treatment head 10.

[0044] In one embodiment of the present application, the fixing assembly 4 includes a first fixing plate 41 and a first fastener 42. The first end of the first flexible circuit board 3 is located between the first fixing plate 41 and the guide member 13. A first opening 411 is opened on the first fixing plate 41. The first fastener 42 is passed through the first opening 411 and is connected to the guide member 13.

[0045] In this embodiment, the fixing assembly 4 includes a first fixing plate 41 and a first fastener 42. One end of the first flexible circuit board 3 is arranged between the first fixing plate 41 and the guide member 13. A first opening 411 is opened on the first fixing plate 41. The first fastener 42 passes through the first opening 411 and is connected to the guide member 13, thereby fixing the first fixing plate 41 on the guide member 13 and fixing one end of the first flexible circuit board 3.

[0046] In one embodiment of the present application, the adapter plate assembly 2 includes an adapter plate body 21 and a connector 22 , the adapter plate body 21 is connected to the connector 22 , the adapter plate body 21 is connected to the first flexible circuit board 3 , and the fixing assembly 4 is connected to the connector 22 .

[0047] In this embodiment, the adapter plate assembly 2 is connected to the adapter plate body 21 and the connecting piece 22, the adapter plate body 21 and the connecting piece 22 are connected, the other end of the first flexible circuit board 3 is connected to the adapter plate body 21, and the fixing assembly 4 is connected to the connecting piece 22, thereby improving the connection strength between the adapter plate assembly 2 and the other end of the first flexible circuit board 3, thereby improving the service life of the treatment head 10.

[0048] In one embodiment of the present application, the fixing assembly 4 also includes a second fixing plate 43 and a second fastener 44. The second end of the first flexible circuit board 3 is located between the second fixing plate 43 and the connecting member 22. A second opening 431 is opened on the second fixing plate 43. The second fastener 44 is passed through the second opening 431 and is connected to the connecting member 22.

[0049] In this embodiment, the first fastener 42 passes through the first opening 411 and is connected to the connector 22 to connect and fix the other end of the first flexible circuit board 3 to the adapter plate assembly 2, further improving the connection strength between the adapter plate assembly 2 and the other end of the first flexible circuit board 3, thereby increasing the service life of the treatment head 10.

[0050] In one embodiment of the present application, the needle plate body 12 , the first flexible circuit board 3 and the adapter plate body 21 are integrally formed.

[0051] In this embodiment, the needle plate body 12, first flexible circuit board 3, and adapter plate body 21 are integrally formed, facilitating processing while enhancing the connection strength and preventing breakage during needle plate movement. The connection between the first flexible circuit board 3, needle plate body 12, and adapter plate body 21 utilizes a three-layer structure: a rigid, a flexible, and a rigid layer. The flexible circuit board is integrally formed with two rigid plates, the rigid plates being TG150.

[0052] In one embodiment of the present application, the length of the first flexible circuit board 3 is greater than the distance between the needle plate body 12 and the adapter plate body 21 .

[0053] In this embodiment, the first flexible circuit board 3 is placed in an "S" shape within the treatment head 10. This "S" shape effectively utilizes the internal space of the treatment head 10, reducing its size. During treatment, the needle plate body 12 moves in a first direction, causing the first flexible circuit board 3 to extend. The length of the first flexible circuit board 3 is greater than the distance between the needle plate body 12 and the adapter plate body 21. This prevents the first flexible circuit board 3 from being pulled, which could damage the connection between the first flexible circuit board 3 and the needle plate body 12 or the adapter plate body 21, thereby rendering the treatment head 10 inoperable.

[0054] In one embodiment of the present application, the treatment head 10 further includes a pressing block 5 and an elastic member 6. The elastic member 6 is sleeved on the guide member 13 and abuts against one end of the connecting member 22. The pressing block 5 is installed on the guide member 13 and abuts against the other end of the elastic member 6.

[0055] In this embodiment, the elastic member 6 is sleeved on the guide member 13 and abuts against one end of the connecting member 22. The pressing block 5 is arranged on the guide member 13. The connection between the pressing block 5 and the guide member 13 is connected by screws. A through hole is opened on the pressing block 5, and the pressing block 5 is fixed to the guide member 13 by screws and abuts against the other end of the elastic member 6 to push the pressing block 5, so that the guide member 13 moves along the first direction, thereby driving the needle plate body 12 to move toward the first direction, and at the same time squeezing the elastic member 6. After the treatment is completed, the pressing block 5 is no longer pushed, the elastic member 6 resumes its deformation, and drives the needle plate body 12 to return to its original position together, thereby realizing automatic resetting of the needle plate body 12.

[0056] In one embodiment of the present application, the treatment head 10 also includes a shell 7, which has a accommodating cavity with an opening, and a plurality of needle holes are opened at the bottom of the accommodating cavity. The needle plate assembly 1, the adapter plate assembly 2 and the first flexible circuit board 3 are embedded in the accommodating cavity and connected to the shell 7, and a needle body 11 extends or retracts through a needle hole.

[0057] In this embodiment, the housing 7 is made of medical-grade PC plastic, which is safe and non-toxic. It is also transparent, allowing the needle plate assembly 1, adapter plate assembly 2, and needle bodies 11 inside the housing 7 to be observed during needle removal. The housing 7 has a rectangular cross-section that matches the shape of the array formed by the plurality of needle bodies 11. The cross-sectional area of ​​the housing 7 gradually increases from the needle removal end to the other end, facilitating the movement of the needle plate assembly 1 within the housing cavity of the housing 7 without being restricted by the housing 7, thereby making needle removal of the treatment head 10 smoother. Secondly, the housing 7 made of transparent plastic allows the user to make a preliminary judgment on whether the treatment head 10 is functioning properly before use. For example, the user can observe whether the end of the first flexible circuit board 3 is broken, etc., to ensure safety in subsequent use.

[0058] In one embodiment of the present application, the treatment head 10 is further provided with a negative pressure tube 8 and a suction assembly 9. The negative pressure tube 8 is provided on the outer peripheral wall of the shell 7 and is connected to the accommodating cavity. One end of the suction assembly 9 is connected to the negative pressure tube 8.

[0059] In this embodiment, the treatment head 10 is also provided with a negative pressure tube 8 connected to the receiving chamber. The negative pressure tube 8 can be used to evacuate the receiving chamber to a near-vacuum state, allowing the treatment head 10 to be adsorbed on the skin surface of the patient being treated, reducing the air resistance when the needle body 11 penetrates the patient's skin, and can also absorb the skin in the treatment area, so that the depth of needle body 11 insertion is consistent. The treatment head 10 also includes a suction assembly 9, which includes a silicone tube, an upper filter shell, a lower filter shell, a water-absorbing sponge, and a sealing ring. One end of the silicone tube is connected to the negative pressure tube 8, and the other end is connected to the upper filter shell. The upper filter shell and the lower filter shell enclose a receiving chamber. The water-absorbing sponge is arranged in the receiving chamber and can absorb the patient's blood or sweat, etc., to prevent secondary contamination. The lower filter shell is connected to an exhaust device, and a sealing ring is provided at the connection to prevent air leakage.

[0060] This application also provides a handpiece 100 comprising a handle 20 and the aforementioned treatment tip 10. The specific structure of the treatment tip 10 is similar to that of the aforementioned embodiments. Since this handpiece 100 incorporates all of the technical solutions of all of the aforementioned embodiments, it possesses at least all of the beneficial effects provided by the technical solutions of the aforementioned embodiments, which will not be further detailed here. The handle 20 is detachably connected to the treatment tip 10 and includes a second flexible circuit board 201, which is electrically connected to the treatment tip 10 to enable the handle 20 to provide radiofrequency energy to the treatment tip 10.

[0061] In this embodiment, the handle 20 and the treatment head 10 are detachably connected, enabling quick replacement of treatment heads of different specifications and improving treatment efficiency. The handle 20 and treatment head 10 are connected via a second flexible circuit board to transmit radiofrequency energy from the handle 20 to the treatment head 10. By providing the second flexible circuit board 201, the number of needle bodies 11 provided on the handle 20 can be reduced accordingly. Similarly, the number of contacts on the handle 20 is also reduced accordingly, with the number of needle bodies 11 matching the number of contacts. The needle bodies 11 can be divided into different groups based on their different heating patterns. Each group is connected to a pathway. Zoned heating can be achieved by providing a corresponding number of needle bodies 11 based on the number of groups required for zoned heating. The energy transmitted by the second flexible circuit board 201 of the handle 20 can enter the adapter plate assembly 2 through different pathways. After passing through the first flexible circuit board 3 and the needle plate assembly 1, the needle plate assembly 1 transmits the energy to different needle bodies 11, generating zoned heating through the different needle bodies 11.

[0062] In one embodiment of the present application, the second flexible circuit board 201 includes a connecting portion 2011 , a first control portion 2012 , and a second control portion 2013 . The connecting portion 2011 , the first control portion 2012 , and the second control portion 2013 are integrally formed.

[0063] In this embodiment, the integrated molding of the adapter portion 2011, the first control portion 2012, and the second control portion 2013 facilitates processing and improves the connection strength between the three, further preventing the connection from breaking, thereby increasing the service life of the microneedle therapeutic device. Furthermore, the adapter portion 2011, the first control portion 2012, and the second control portion 2013 are themselves made of a flexible material. The first control portion 2012 and the second control portion 2013 can be located on two adjacent side surfaces of the handle 20, and the adapter portion 2011 can be located on an end surface of the handle 20 near the treatment head 10. Thus, the flexible adapter portion 2011, the first control portion 2012, and the second control portion 2013 can be well accommodated within the internal space of the handle 20, avoiding operational difficulties caused by the handle 20 being oversized.

[0064] The present application also provides a microneedle treatment device, comprising the hand tool 100 as described above.

[0065] The microneedle therapy device provided in the embodiment of the present application has the hand tool 100 in any of the above embodiments, and thus has the beneficial effects brought by the hand tool 100 in any of the above embodiments, which will not be described in detail here.

[0066] The above describes the embodiments of the present application, but those skilled in the art should be aware that the present application is not limited to the above embodiments. The above embodiments are merely examples, and within the scope of the technical solution of the present application, embodiments having substantially the same structure as the technical idea and exerting the same effects are all included in the technical scope of the present application. In addition, without departing from the scope of the subject matter of the present application, other methods of constructing the embodiments by applying various modifications that can be conceived by those skilled in the art and combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A treatment head, characterized in that: include: A needle plate assembly, wherein a plurality of needle bodies are provided on the needle plate assembly; An adapter plate assembly, the needle plate assembly is slidably connected to the adapter plate assembly, and the driving end of the handle drives the needle plate assembly to move relative to the adapter plate assembly along a first direction; A first flexible circuit board, wherein the first flexible circuit board is respectively connected to the needle plate assembly and the adapter plate assembly; the radio frequency energy output by the handle passes through the adapter plate assembly, the first flexible circuit board and the needle plate assembly in sequence, and controls the heating of several needle body partitions.

2. The treatment head according to claim 1, characterized in that: The treatment head further comprises a fixing assembly, and the fixing assembly is used to fix the first flexible circuit board portion to the needle plate assembly and / or the adapter plate assembly.

3. The treatment head according to claim 2, characterized in that: The needle plate assembly includes a needle plate body and a guide member, a plurality of needle bodies are mounted on the needle plate body, the needle plate body is connected to the first flexible circuit board, a guide hole is provided on the adapter plate assembly, one end of the guide member is connected to the needle plate body, and the other end of the guide member is passed through the guide hole and is slidably connected to the adapter plate assembly.

4. The treatment head according to claim 3, characterized in that: The fixing assembly includes a first fixing plate and a first fastener, the first end of the first flexible circuit board is located between the first fixing plate and the guide member, the first fixing plate is provided with a first opening, the first fastener is passed through the first opening and connected to the guide member.

5. The treatment head according to claim 3, characterized in that: The adapter plate assembly includes an adapter plate body and a connecting piece, the adapter plate body is connected to the connecting piece, the adapter plate body is connected to the first flexible circuit board, and the fixing assembly is connected to the connecting piece.

6. The treatment head according to claim 5, characterized in that: The fixing assembly also includes a second fixing plate and a second fastener, the second end of the first flexible circuit board is located between the second fixing plate and the connecting member, the second fixing plate is provided with a second opening, the second fastener is passed through the second opening and connected to the connecting member.

7. The treatment head according to claim 5, characterized in that: The needle plate body, the first flexible circuit board and the adapter plate body are integrally formed.

8. The treatment head according to claim 5, characterized in that: The length of the first flexible circuit board is greater than the distance between the needle plate body and the adapter plate body.

9. The treatment head according to claim 5, characterized in that: The treatment head further comprises a pressing block and an elastic member, wherein the elastic member is sleeved on the guide member and abuts against one end of the connecting member, and the pressing block is mounted on the guide member and abuts against the other end of the elastic member.

10. The treatment head according to claim 1, characterized in that: The treatment head also includes a shell, which has a accommodating cavity with an opening, and a plurality of needle holes are opened at the bottom of the accommodating cavity. The needle plate assembly, the adapter plate assembly and the first flexible circuit board are embedded in the accommodating cavity and connected to the shell, and a needle body extends out or retracts through one of the needle holes.

11. The treatment head according to claim 10, characterized in that: The treatment head is also provided with a negative pressure tube and a suction assembly. The negative pressure tube is arranged on the outer peripheral wall of the shell and is communicated with the accommodating cavity. One end of the suction assembly is connected to the negative pressure tube.

12. The treatment head according to claim 10, characterized in that: The shell is made of transparent material.

13. A hand tool, characterized in that: The invention comprises a handle and a treatment head as claimed in any one of claims 1 to 12, wherein the handle is detachably connected to the treatment head, and the handle comprises a second flexible circuit board, and the second flexible circuit board is electrically connected to the treatment head so that the handle provides radio frequency energy to the treatment head.

14. The hand tool according to claim 13, characterized in that The second flexible circuit board includes a transfer portion, a first control portion, and a second control portion, and the transfer portion, the first control portion, and the second control portion are integrally formed.

15. A microneedle treatment device, characterized in that: A hand tool comprising any one of claims 13-14.

Images