Treatment head, handpiece, and microneedle treatment equipment

Abstract

This application discloses a treatment head, a handpiece, and a microneedle treatment device, in which the treatment head includes a needle plate component, an adapter plate component, and a first flexible substrate, the needle plate component is provided with several needles, the needle plate component is slidably connected to the adapter plate component, a driving end of a handle drives the needle plate component to move along a first direction relative to the adapter plate component, the first flexible substrate is connected to the needle plate component and the adapter plate component respectively, and high-frequency energy output by the handle passes through the adapter plate component, the first flexible substrate 3, and the needle plate component in sequence, and is controlled to locally heat the several needles. The technical solution of this application aims to improve the service life of the treatment head, reduce the volume of the treatment head, and improve the stability and safety of the treatment head when used.

Description

[Technical Field]

[0001] The present application claims the priority of the Chinese patent application with application number 202322978391.1 filed on November 2, 2023, the entire content of which is incorporated herein by reference.

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

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

[0004] In the prior art, the adapter plate of the treatment head is provided with a plurality of contacts. When the treatment head is mounted on the handle, the probes on the handle communicate with the contacts on the adapter plate. A plurality of needles are mounted on the treatment head, and each needle communicates with a corresponding contact on the adapter plate. At this time, the handle side outputs radiofrequency energy in different sequences, so that the treatment head of the microneedle can perform segmented discharge.

[0005] However, this approach presents the following problems. On the one hand, each needle must be connected to the adapter plate's contacts by its own separate wire. This makes the wires prone to breakage during the high-speed reciprocating motion of the needle plate. If a wire breaks, the needles will be unable to perform compartmental discharge, which will affect the effectiveness of the high-frequency treatment. On the other hand, installing wires corresponding to the number of needles further increases the overall volume of the treatment head, making it impossible to guarantee the needle pitch and arrangement density, resulting in poor aesthetics and practicality. Furthermore, the internal circuitry is complex, and stability and safety cannot be effectively guaranteed. [Overview of the project] [Problems that the invention aims to solve]

[0006] The main objective of this invention is to provide a treatment head that improves the service life of the treatment head, reduces the volume of the treatment head, and improves the stability and safety of the treatment head during use. [Means for solving the problem]

[0007] To achieve the above objective, the treatment head proposed in this application is connected to one side of a handle and includes a needle plate component, an adapter plate component, and a first flexible substrate, the needle plate component being provided with several needles, the needle plate component being movably connected to the adapter plate component, the drive end of the handle driving the needle plate component to reciprocate relative to the adapter plate component, the first flexible substrate being electrically connected to the needle plate component and the adapter plate component respectively, and controlling the high-frequency energy output by the handle to pass sequentially through the adapter plate component, the first flexible substrate, and the needle plate component, and then cause some of the needles to undergo compartmental heating.

[0008] In one embodiment of the present invention, the treatment head further includes a fixation component used to partially fix the first flexible substrate to the needle plate component and / or the adapter plate component.

[0009] In one embodiment of the present invention, the needle plate component includes a needle plate body and a guide member, several needles are attached to the needle plate body, the needle plate body is connected to the first flexible substrate, a guide hole is provided in the adapter plate component, one end of the guide member is connected to the needle plate body, the other end of the guide member is inserted into the guide hole and is slidably connected to the adapter plate component.

[0010] In one embodiment of the present invention, the fixing component includes a first fixing plate and a first fastening member, the first end of the first flexible substrate is located between the first fixing plate and the guide member, the first fixing plate has a first opening, the first fastening member is inserted into the first opening and connected to the guide member.

[0011] In one embodiment of the present invention, the adapter plate component includes an adapter plate body and a connecting member, the adapter plate body is connected to the connecting member, the adapter plate body is connected to the first flexible substrate, and the fixing component is connected to the connecting member.

[0012] In one embodiment of the present invention, the fixing component further includes a second fixing plate and a second fastening member, the second end of the first flexible substrate is located between the second fixing plate and the connecting member, a second opening is made in the second fixing plate, the second fastening member is inserted into the second opening and connected to the connecting member.

[0013] In one embodiment of the present invention, the needle plate body, the first flexible substrate, and the adapter plate body are integrally molded.

[0014] In one embodiment of the present invention, the length of the first flexible substrate is greater than the pitch between the needle plate body and the adapter plate body.

[0015] In one embodiment of the present invention, the treatment head further includes a pressing block and an elastic member fitted onto the guide member and in contact with one end of the connecting member, wherein the pressing block is attached to the guide member and in contact with the other end of the elastic member.

[0016] In one embodiment of the present invention, the treatment head further includes a case having a storage chamber with an opening, the bottom of which several needle holes are provided, the needle plate component, the adapter plate component and the first flexible substrate are fitted into the storage chamber and connected to the case, and one of the needles extends or retracts through one of the needle holes.

[0017] In one embodiment of the present invention, the treatment head is further provided with a negative pressure tube provided on the outer peripheral wall of the case and communicating with the storage chamber, and a suction component having one end connected to the negative pressure tube.

[0018] In one embodiment of the present invention, the case is made of a transparent material.

[0019] The present invention further proposes a handpiece including a handle and a treatment head as described above, wherein the handle is detachably connected to the treatment head, the handle includes a second flexible substrate, the second flexible substrate is electrically connected to the treatment head so that the handle provides high-frequency energy to the treatment head.

[0020] In one embodiment of the present invention, the second flexible substrate includes an integrally molded adapter, a first control unit, and a second control unit.

[0021] This invention further proposes a microneedle treatment system including the handpiece described above.

[0022] (Beneficial effects) The present invention relates to a technical solution comprising a needle plate component, an adapter plate component, and a first flexible substrate. The needle plate component is provided with several needles, and is movably connected to the adapter plate component. The needle plate component reciprocates relative to the adapter plate component, thereby achieving reciprocating movement of the needles along a first direction, and ultimately achieving a planar treatment effect of the treatment head. The first flexible substrate is connected to the needle plate component and the adapter plate component, respectively. The high-frequency energy output by the handle passes through the adapter plate component, the first flexible substrate, and the needle plate component, controlling the localized heating of several needles. By connecting the needle plate component and the adapter plate component via the flexible substrate, high-frequency energy can be transmitted to several needles on the needle plate component via the adapter plate component and the first flexible substrate. The connection by the flexible substrate realizes the integration effect of multiple circuits, enabling high-power transmission and thus achieving the effect of localized heating of several needles. At the same time, compared to connections by wires, the flexible substrate can withstand repeated movement more effectively, improving the stability and safety of the treatment head in use.

[0023] In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings that need to be used for describing the embodiments or the prior art. The drawings in the following description are only some embodiments of the present application, and it is obvious that those skilled in the art can obtain other drawings based on the structures shown in these drawings without creative efforts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] [Figure 1] It is a schematic structural diagram of an embodiment of the therapeutic head of the present application. [Figure 2] It is a schematic structural diagram of another embodiment of the therapeutic head of the present application. [Figure 3] It is a top view of still another embodiment of the therapeutic head of the present application. [Figure 4] It is a schematic cross-sectional view taken along line A-A in Figure 3. [Figure 5] It is a schematic structural diagram of an embodiment of the handpiece of the present application. [Figure 6] It is a schematic structural diagram of an embodiment of the handle of the handpiece of the present application. MODE FOR CARRYING OUT THE INVENTION

[0025] The objects, functional features and advantages of the present application will be further described below with reference to the accompanying drawings in conjunction with the embodiments. The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some rather than all of the embodiments of the present application. All other embodiments obtained by those skilled in the art on the premise of not making creative efforts based on the embodiments in the present application shall fall within the protection scope of the present application.

[0026] Furthermore, if there is any description of directional indicators (e.g., up, down, left, right, front, back, etc.) in the embodiments of this application, these directional indicators are merely used to interpret the relative positional relationships and motion conditions between each component in a particular orientation (as shown in the drawings), and if that particular orientation changes, the directional indicators will also change accordingly.

[0027] Furthermore, if there are descriptions of "first," "second," etc., in the embodiments of this application, such descriptions of "first," "second," etc., are used solely for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features limited by "first" and "second" may explicitly or implicitly include at least one such feature. Also, while technical ideas between embodiments may be combined, this must be based on what a person skilled in the art can implement, and if a combination of technical ideas is contradictory or unimplementable, such a combination of technical ideas should be considered nonexistent and outside the scope of protection required by this application.

[0028] This invention proposes a treatment head 10 that aims to improve 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.

[0029] In the embodiment of the present invention, the treatment head 10 includes a needle plate component 1, an adapter plate component 2, and a first flexible substrate 3, wherein the needle plate component 1 is provided with several needles 11, the needle plate component 1 is movably connected to the adapter plate component 2, the drive end of the handle 20 drives the needle plate component 1 to reciprocate relative to the adapter plate component 2, that is, to move along a first direction and along a direction opposite to the first direction, the first flexible substrate 3 is electrically connected to the needle plate component 1 and the adapter plate component 2 respectively, and the high-frequency energy output by the handle 20 is controlled to pass through the adapter plate component 2, the first flexible substrate 3 and the needle plate component 1 in sequence, and then to cause partial heating of several needles 11.

[0030] The present invention relates to a technical solution comprising a needle plate component 1, an adapter plate component 2, and a first flexible substrate 3. The needle plate component 1 and the adapter plate component 2 employ PCBA (printed circuit board assembly) and can transmit high-frequency energy to several needles 11, thereby allowing several needles 11 to dissipate heat and perform heat dissipation treatment on the treatment area. The first flexible substrate 3 has a certain bending and stretching capability, making it less likely to tear and cause circuit connection failure during the reciprocating movement of the needle plate. Several needles 11 are provided on the needle plate component 1, and the needle plate component 1 is slidably connected to the adapter plate component 2. The needle plate component 1 moves along the first direction relative to the adapter plate component 2 to realize the reciprocating movement of the needles 11 along the first direction, which is the first direction in the drawing, thereby realizing a planar treatment effect of the treatment head 10. The first flexible substrate 3 is connected to the needle plate component 1 and the adapter plate component 2, respectively. The high-frequency energy output by the handle 20 passes through the adapter plate component 2, the first flexible substrate 3, and the needle plate component 1, controlling the heating of several needles 11 in a partitioned manner. By connecting the needle plate component 1 and the adapter plate component 2 via the flexible substrate, high-frequency energy can be transmitted to several needles 11 on the needle plate component 1 via the adapter plate component 2 and the first flexible substrate 3. The connection by the flexible substrate realizes the effect of integrating multiple circuits to achieve high power transmission, and consequently, it is possible to control the heating of several needles 11 in a partitioned manner. At the same time, compared to connections by wires, the flexible substrate can withstand repeated movement more than before, improving the service life of the treatment head.

[0031] In one embodiment of the present invention, the treatment head 10 further includes a fixing component 4 for partially fixing the first flexible substrate 3 to the needle plate component 1 and / or adapter plate component 2.

[0032] In this embodiment, the service life of the treatment head 10 can be improved by further reinforcing both ends of the first flexible substrate 3 with a needle plate component 1 and an adapter plate component 2 via a fixed component 4, thereby improving the connection strength of the connection points between the first flexible substrate 3 and the needle plate component 1 and / or adapter plate component 2.

[0033] In one embodiment of the present invention, the needle plate component 1 includes a needle plate body 12 and a guide member 13, several needles 11 are attached to the needle plate body 12, the needle plate body 12 is connected to a first flexible substrate 3, a guide hole is provided in the adapter plate component 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 inserted into the guide hole and slidably connected to the adapter plate component 2.

[0034] In this embodiment, the needle plate component 1 includes a needle plate body 12 and a guide member 13, the adapter plate component 2 has a guide hole, and the guide member 13 has one end provided on the other side of the needle plate body 12 away from some of the needles 11, and the other end is inserted into the guide hole and slidably connected to the adapter plate component 2. The engagement connection between the guide hole and the guide member 13 can restrict the sliding trajectory of the needle plate body 12, causing it to move along a first direction and not to shift laterally, thereby preventing distortion of the needle plate body 12 from affecting the therapeutic effect of the treatment head 10.

[0035] In one embodiment of the present invention, the fixing component 4 includes a first fixing plate 41 and a first fastening member 42, the first end of the first flexible substrate 3 is located between the first fixing plate 41 and the guide member 13, the first fixing plate 41 has a first opening 411, and the first fastening member 42 is inserted into the first opening 411 and connected to the guide member 13.

[0036] In this embodiment, the fixing component 4 includes a first fixing plate 41 and a first fastening member 42. One end of the first flexible substrate 3 is provided between the first fixing plate 41 and the guide member 13. A first opening 411 is provided in the first fixing plate 41. The first fastening member 42 passes through the first opening 411 and is connected to the guide member 13. Furthermore, the first fixing plate 41 is fixed to the guide member 13, and one end of the first flexible substrate 3 is also fixed.

[0037] In one embodiment of the present invention, the adapter plate component 2 includes an adapter plate body 21 and a connecting member 22, the adapter plate body 21 is connected to the connecting member 22, the adapter plate body 21 is connected to the first flexible substrate 3, and the fixing component 4 is connected to the connecting member 22.

[0038] In this embodiment, the adapter plate component 2 includes an adapter plate body 21 and a connecting member 22. The adapter plate body 21 and the connecting member 22 are connected, the other end of the first flexible substrate 3 is connected to the adapter plate body 21, and the fixing component 4 is connected to the connecting member 22. This improves the connection strength between the adapter plate component 2 and the other end of the first flexible substrate 3, and consequently improves the service life of the treatment head 10.

[0039] In one embodiment of the present invention, the fixing component 4 further includes a second fixing plate 43 and a second fastening member 44, the second end of the first flexible substrate 3 is located between the second fixing plate 43 and the connecting member 22, a second opening 431 is made in the second fixing plate 43, and the second fastening member 44 is inserted into the second opening 431 and connected to the connecting member 22.

[0040] In this embodiment, the first fastening member 42 passes through the first opening 411 and is connected to the connecting member 22, thereby connecting and fixing the other end of the first flexible substrate 3 to the adapter plate component 2, further improving the connection strength between the adapter plate component 2 and the other end of the first flexible substrate 3, and consequently improving the service life of the treatment head 10.

[0041] In one embodiment of the present invention, the needle plate body 12, the first flexible substrate 3, and the adapter plate body 21 are molded together as a single unit.

[0042] In this embodiment, the needle plate body 12, the first flexible substrate 3, and the adapter plate body 21 are molded as a single unit, which allows for more convenient processing and simultaneously improves the connection strength between the three components, further preventing the connection from breaking when the needle plate moves. The connection points between the first flexible substrate 3, the needle plate body 12, and the adapter plate body 21 employ a triple-layer structure, configured as hard, soft, hard, with the flexible substrate and the two hard plates molded as a single unit, and the hard plates being made of TG150.

[0043] In one embodiment of the present invention, the length of the first flexible substrate 3 is greater than the pitch between the needle plate body 12 and the adapter plate body 21.

[0044] In this embodiment, the first flexible substrate 3 is arranged in an "S" shape inside the treatment head 10, and the "S" shape effectively utilizes the internal space of the treatment head 10, thereby reducing the volume of the treatment head 10. During treatment, the needle plate body 12 moves in the first direction, stretching the first flexible substrate 3. Since the length of the first flexible substrate 3 is greater than the distance between the needle plate body 12 and the adapter plate body 21, it is possible to prevent the first flexible substrate 3 from being pulled, which could damage the connection between the first flexible substrate 3 and the needle plate body 12 or the adapter plate body 21, and ultimately cause the treatment head 10 to malfunction.

[0045] In one embodiment of the present invention, the treatment head 10 further includes a pressing block 5 and an elastic member 6 fitted onto a guide member 13 and in contact with one end of a connecting member 22, wherein the pressing block 5 is attached to the guide member 13 and in contact with the other end of the elastic member 6.

[0046] In this embodiment, the elastic member 6 is fitted onto the guide member 13 and abuts against one end of the connecting member 22, and the pressing block 5 is installed on the guide member 13. The connection between the pressing block 5 and the guide member 13 is made via a screw. The pressing block 5 has a through hole and is fixed to the guide member 13 via the screw. By abutting against the other end of the elastic member 6 and pushing the pressing block 5 forward, the guide member 13 is moved along the first direction, and consequently the needle plate body 12 is moved in the first direction, while simultaneously pressing the elastic member 6. When the treatment is complete, the pressing block 5 is no longer pushed forward, the deformation of the elastic member 6 is restored, and the needle plate body 12 is returned to its original position together, thereby achieving automatic return of the needle plate body 12.

[0047] In one embodiment of the present invention, the treatment head 10 further includes a case 7 having a storage chamber with an opening, the bottom of which several needle holes are provided, and a needle plate component 1, an adapter plate component 2 and a first flexible substrate 3 are fitted into the storage chamber and connected to the case 7, with one needle 11 extending or retracting through one needle hole.

[0048] In this embodiment, the case 7 is made of medical-grade PC plastic, which is safe, non-toxic, and transparent, allowing observation of the needle plate component 1, adapter plate component 2, and needle 11 inside the case 7. The cross-sectional shape of the case 7 is rectangular, matching the shape of the array formed by several needles 11. The cross-sectional area from one end of the needle exit surface of the case 7 to the other gradually increases, facilitating the movement of the needle plate component 1 within the storage chamber of the case 7 without being restricted by the case, and making the needle exit of the treatment head 10 smoother. Furthermore, the transparent plastic case 7 makes it easy for the user to make a preliminary judgment on whether the treatment head 10 is normal before use. For example, the user can observe whether there are any conditions such as breakage at the end of the first flexible substrate 3 to ensure safety during subsequent use.

[0049] In one embodiment of the present invention, the treatment head 10 is further provided with a negative pressure tube 8 provided on the outer peripheral wall of the case 7 and communicating with a storage chamber, and a suction component 9 whose one end is connected to the negative pressure tube 8.

[0050] In this embodiment, the treatment head 10 is further equipped with a negative pressure tube 8 that communicates with a storage chamber, and the inside of the storage chamber can be drawn to a state approximating a vacuum via the negative pressure tube 8, thereby allowing the treatment head 10 to adhere to the surface of the patient's skin, reducing air resistance when the needle 11 penetrates the patient's skin, and matching the depth to which the needle 11 penetrates by sucking up the skin in the treatment area. The treatment head 10 further includes a suction component 9, which includes a silicone tube, an upper filter case, a lower filter case, an absorbent sponge, and a sealing ring. One end of the silicone tube is connected to the negative pressure tube 8 and the other end communicates with the upper filter case, and the upper and lower filter cases surround each other to form a storage chamber, and the absorbent sponge is installed inside the storage chamber to absorb the patient's blood or sweat and prevent secondary contamination. An air extraction device is connected to the lower filter case, and a sealing ring is provided at the connection point to prevent air leakage.

[0051] This application further proposes a handpiece 100 including a handle 20 and a treatment head 10 as described above, the specific structure of the treatment head 10 referring to the embodiments described above, and since this handpiece 100 adopts all the technical ideas of all the embodiments described above, it will have at least all the beneficial effects of the technical ideas of the embodiments described above, and will not be described here. The handle 20 is detachably connected to the treatment head 10, and the handle 20 includes a second flexible substrate 201, the second flexible substrate 201 is electrically connected to the treatment head 10 so that the handle 20 provides high-frequency energy to the treatment head 10.

[0052] In this embodiment, a detachable connection is used between the handle 20 and the treatment head 10, enabling quick replacement of treatment heads with different specifications and improving treatment efficiency. By connecting the handle 20 and the treatment head 10 via a second flexible substrate, high-frequency energy is transmitted from the handle 20 to the treatment head 10. By installing the second flexible substrate 201, the number of needles 11 installed on the handle 20 can be reduced accordingly, and similarly, the number of contacts on the handle 20 is also reduced accordingly, so that the number of needles 11 and the number of contacts match. Different grooves can be separated based on the different heating modes of the needles 11, and each group is connected to a single passage. Partition heating can be achieved by installing the corresponding number of needles 11 based on the number of groups required for partition heating. The energy transmitted by the second flexible substrate 201 of the handle 20 can enter the adapter plate component 2 via different passages, and after passing through the first flexible substrate 3 and the needle plate component 1, the needle plate component 1 transmits the energy to different needles 11, and partition heating occurs through the different needles 11.

[0053] In one embodiment of the present invention, the second flexible substrate 201 includes an integrally molded adapter 2011, a first control unit 2012, and a second control unit 2013.

[0054] In this embodiment, the adapter 2011, the first control unit 2012, and the second control unit 2013 are integrally molded, making them easier to process, improving the connection strength between the three components, further preventing breakage of the connections, and ultimately extending the service life of the microneedle therapy device. Furthermore, the adapter 2011, the first control unit 2012, and the second control unit 2013 are themselves made of flexible material, and the first control unit 2012 and the second control unit 2013 may be distributed on adjacent sides of the handle 20, while the adapter 2011 may be located on one end face of the handle 20 closer to the treatment head 10. Thus, the flexibly manufactured adapter 2011, the first control unit 2012, and the second control unit 2013 can be well housed in the internal space of the handle 20, avoiding difficulties in work due to the excessive manufacturing size of the handle 20.

[0055] This application further proposes a microneedle treatment system including the handpiece 100 described above.

[0056] The microneedle treatment equipment provided in the embodiment of this application has the handpiece 100 as described in any of the embodiments above, and therefore has the beneficial effects of the handpiece 100 as described in any of the embodiments above, and a detailed explanation is omitted here.

[0057] Although embodiments of the present application have been described above, those skilled in the art should understand that the present application is not limited to the embodiments described above. The embodiments described above are merely illustrative, and any embodiment that has substantially the same structure as the technical configuration and exhibits the same effects within the scope of the present application is included within the scope of the present application. Furthermore, other forms constructed by combining some of the components of the embodiments with various modifications that those skilled in the art can conceive of, without departing from the spirit of the present application, are also included within the scope of the present application. [Explanation of Symbols]

[0058] 100 Handpieces 43 Second fixing plate 10 treatment heads 431 Second opening 1 Needle Plate Component 44 Second fastening member 11 Needles 5. Pressing block 12 Needle Plate Body 6 Elastic members 13 Guide member 7 cases 2 Adapter Plate Components 71 Needle holes 21 Adapter plate body 8. Vacuum tube 22 Connecting Member 9 Suction Components 3. First flexible substrate 20 handles 4 fixed components 201 Second Flexible Circuit Board 41 First fixing plate 2011 Adapter 411 First opening 2012 First Control Unit 42 First fastening member 2013 Second control unit

Claims

1. A treatment head connected to one side of the handle, A needle plate component on which several needles are provided, An adapter plate component, wherein a needle plate component is movably connected to the adapter plate component, and the drive end of the handle drives the needle plate component to reciprocate relative to the adapter plate component, A first flexible substrate electrically connected to the needle plate component and the adapter plate component, respectively, the first flexible substrate controls the high-frequency energy output by the handle to pass through the adapter plate component, the first flexible substrate, and the needle plate component in sequence, and then cause some of the needles to undergo partial heating. The needle plate component includes a connected needle plate body and a guide member, and the adapter plate component includes a connected adapter plate body and a connecting member, and the needle plate body, the first flexible substrate, and the adapter plate body are integrally molded. Guide holes are provided in the adapter plate component, one end of the guide member is connected to the needle plate body, and the other end of the guide member is inserted into the guide hole and slidably connected to the adapter plate component. The treatment head further includes a pressing block and an elastic member located between the guide member and the connecting member, fitted into the guide member and in contact with one end of the connecting member, the pressing block being attached to the guide member and in contact with the other end of the elastic member. A treatment head characterized by the following features.

2. The treatment head further includes a fixing component for partially fixing the first flexible substrate to the needle plate component and / or the adapter plate component. The treatment head according to feature 1.

3. Some of the needles are attached to the needle plate body, and the needle plate body is connected to the first flexible substrate. The treatment head according to feature 2.

4. The fixing component includes a first fixing plate and a first fastening member, the first end of the first flexible substrate is located between the first fixing plate and the guide member, a first opening is made in the first fixing plate, the first fastening member is inserted into the first opening and connected to the guide member. The treatment head according to feature 3.

5. The adapter plate body is connected to the first flexible substrate, and the fixing component is connected to the connecting member, The treatment head according to feature 3.

6. The fixing component further includes a second fixing plate and a second fastening member, the second end of the first flexible substrate is located between the second fixing plate and the connecting member, a second opening is made in the second fixing plate, the second fastening member is inserted into the second opening and connected to the connecting member. The treatment head according to feature 5.

7. The length of the first flexible substrate is greater than the pitch between the needle plate body and the adapter plate body. The treatment head according to feature 5.

8. The treatment head further includes a case having a storage chamber with an opening, the bottom of which several needle holes are provided, the needle plate component, the adapter plate component, and the first flexible substrate are fitted into the storage chamber and connected to the case, and one of the needles extends or retracts through one of the needle holes. The treatment head according to feature 1.

9. The treatment head is further provided with a negative pressure tube provided on the outer circumferential wall of the case and communicating with the storage chamber, and a suction component whose one end is connected to the negative pressure tube. The treatment head according to feature 8.

10. The aforementioned case is made using transparent material. The treatment head according to feature 8.

11. The treatment head includes a handle and the treatment head according to any one of claims 1 to 10. The handle is detachably connected to the treatment head and includes a second flexible circuit board. The second flexible substrate is electrically connected to the treatment head so that the handle provides high-frequency energy to the treatment head. A handpiece characterized by the following features.

12. The second flexible substrate includes an integrally molded adapter, a first control unit and a second control unit. The handpiece according to feature 11.

13. Including the handpiece described in claim 11, A microneedle therapy device characterized by the following features.

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