Therapeutic head and non-invasive radio frequency therapeutic apparatus

By setting a support frame in the treatment head of the non-invasive radiofrequency therapy device, the problem of uneven charge distribution caused by the depression of the flexible electrode part is solved, better skin contact and extended service life are achieved, and the risk of skin burns is reduced.

CN223350819UActive Publication Date: 2025-09-19SHENZHEN PENINSULA MEDICAL CO LTD
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Patent Information

Application Number
CN202421988723.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-15
Publication Date
2025-09-19
Estimated Expiration
2034-08-15

AI Technical Summary

Technical Problem

The flexible electrodes of existing non-invasive radiofrequency therapeutic devices tend to sag inward after long-term use, resulting in uneven charge distribution, local overheating, and skin burns.

Method used

A treatment head is designed, which includes a base, a contact part and a support frame. The support frame at least abuts the middle part of the contact part and is nested in the mounting cavity of the base. The support frame provides supporting force to make the contact part better adhere to the skin and prevent it from sinking.

Benefits of technology

It effectively prevents the edge effect of radio frequency current, reduces the risk of skin burns, extends the service life of the contact part, and increases the service life of the treatment head.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a treatment head and noninvasive radio frequency therapeutic apparatus relates to medical instrument technical field, the treatment head includes base, contact portion and support frame, the base is equipped with the mounting cavity, the one end of mounting cavity is equipped with the opening, the contact portion is connected with base and covers the opening, is used for tightly contact with skin surface to provide radio frequency energy to skin, and the support frame is equipped with the support frame. And the support frame at least abuts against the middle part of the contact part and is nested in the mounting cavity. According to the technical scheme provided by the utility model, the problems that the contact part of the existing treatment head is easy to sink inwards after being used for a long time, so that charges on the contact part are not uniformly distributed, the local overheating edge effect is generated, and the skin is scalded are solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a treatment head and a non-invasive radio frequency treatment instrument. Background Art

[0002] A non-invasive radiofrequency therapy device is a cosmetic device that can achieve a stretching and firming effect on the skin, is highly safe, and does not cause wounds. A non-invasive radiofrequency therapy device generally consists of a main unit and a treatment head. The top of the treatment head is provided with a contact portion for contact with the skin. This contact portion includes a foldable flexible electrode portion, which is secured by gluing its edges to the edge of a fixed frame within the treatment head. However, after long-term use in this manner, the flexible electrode portion in the middle of the contact portion at the top of the treatment head will sag inward, creating an edge effect. This results in an uneven charge distribution on the flexible electrode portion, with a high charge density at the edge of the flexible electrode portion, which can easily lead to localized overheating and burns. Utility Model Content

[0003] The main purpose of the utility model is to provide a treatment head and a non-invasive radiofrequency treatment device, aiming to solve the problem that the flexible electrode part of the existing treatment head is prone to inward concavity after long-term use, resulting in uneven charge distribution on the flexible electrode part, causing local overheating and burns to the skin.

[0004] To achieve the above-mentioned objectives, the present invention proposes a treatment head for use in a non-invasive radiofrequency therapy device, the treatment head comprising: a base, the base being provided with a mounting cavity, one end of the mounting cavity being provided with an opening; a contact portion, the contact portion being connected to the base and covering the opening, and being configured to be in close contact with the skin surface to provide radiofrequency energy to the skin; and a support frame, the support frame at least abutting the middle portion of the contact portion and being nested in the mounting cavity.

[0005] In one embodiment, the support frame includes a support portion and at least two support legs, and at least two of the support legs are connected to the support portion at intervals; the side of the support portion facing away from the base at least abuts against the middle of the contact portion and is used to withstand the axial force applied by the contact portion; the support legs abut against the inner wall of the mounting cavity and the inner wall applies a certain radial force to the support legs and the support portion to keep the support portion in the mounting cavity.

[0006] In one embodiment, at least two fixing columns are provided on the inner wall of the installation cavity, the supporting feet are arranged in a one-to-one correspondence with the fixing columns, a fixing hole is opened on the fixing column, and the supporting feet are inserted into the fixing hole; a stop portion is convexly provided on the outer wall of the supporting foot, and the stop portion is abutted against the top surface of the fixing column.

[0007] In one embodiment, the support portion includes a central stop portion for abutting at least a middle portion of the contact portion, and the central stop portion includes a hollow or openwork structure for spraying the refrigerant through the hollow or openwork structure to the contact portion.

[0008] In one embodiment, the support portion includes the central abutment portion and at least two support arms, the central abutment portion is hollow and circular, at least two support arms are arranged to extend radially outward along the central abutment portion, and the support foot is connected to one end of the support arm away from the central abutment portion.

[0009] In one embodiment, the support portion includes the central abutment portion and a plurality of support arms, the central abutment portion is a hollow square, each corner of the central abutment portion is connected to two support arms, and the support foot is connected to one end of the support arm away from the central abutment portion.

[0010] In one embodiment, the support portion includes the central abutment portion and at least two support arms, at least two of the support arms are cross-arranged, the intersection of the two support arms constitutes the central abutment portion, and the support foot is connected to one end of the support arm away from the central abutment portion.

[0011] In one embodiment, a portion along the length direction of the support arm is recessed to form an elastic arm, and the elastic arm is used to accommodate the deformation of the support arm caused by the radial force applied by the installation cavity.

[0012] In one embodiment, the support arm is divided into a first section and a second section by the elastic arm, and the two ends of the elastic arm are respectively connected to the first section and the second section, wherein the first section is connected to the central abutting portion, and the second section is connected to an end of the first section away from the central abutting portion, and the first section is arranged higher than the second section in a direction toward the top of the central abutting portion.

[0013] The present invention also provides a non-invasive radiofrequency therapeutic apparatus, which includes a host and the above-mentioned treatment head, wherein the host is connected to the treatment head.

[0014] Compared with the prior art, the treatment head and non-invasive radiofrequency therapeutic device provided by the present invention have the following beneficial effects:

[0015] The technical solution of the present invention is to provide a support frame, which at least bears against the middle part of the contact part, and provides supporting force to the middle part of the contact part during treatment, so that the contact part can better adhere to the skin, and the middle part of the contact part is not easy to be concave, thereby reducing the edge effect of the radio frequency current during the treatment process, preventing skin burns, and at the same time extending the service life of the contact part and increasing the service life of the treatment head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 This is one of the exploded schematic diagrams of an embodiment of the treatment head of the utility model;

[0018] Figure 2 This is the second exploded diagram of the first embodiment of the treatment head of the utility model;

[0019] Figure 3 This is the third exploded diagram of the first embodiment of the treatment head of the utility model;

[0020] Figure 4 This is a structural diagram of the first embodiment of the support frame of the utility model;

[0021] Figure 5 This is a front view of the first embodiment of the support frame of the utility model;

[0022] Figure 6 This is a structural diagram of the second embodiment of the support frame of the utility model;

[0023] Figure 7 This is a structural diagram of a third embodiment of the support frame of the present utility model;

[0024] Figure 8 This is a structural diagram of a fourth embodiment of the support frame of the present utility model;

[0025] Figure 9 This is a structural diagram of the fifth embodiment of the support frame of the utility model;

[0026] Figure 10 This is a structural diagram of the sixth embodiment of the support frame of the present invention.

[0027] Description of Figure Numbers:

[0028] 100. Treatment head; 10. Base; 11. Mounting cavity; 12. Opening; 13. Fixing column; 20. Support frame; 21. Support portion; 211. Center abutment portion; 212. Support arm; 2121. Elastic arm; 2122. First section; 2123. Second section; 22. Support foot; 23. Stop portion; 30. Contact portion; 31. Middle portion; 32. Extension portion.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention 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.

[0032] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "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 this 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 combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0033] Please refer to Figures 1 to 10 The present invention proposes a treatment head 100, which is applied to a non-invasive radiofrequency therapy device (not shown in the figure). The treatment head 100 includes: a base 10, the base 10 is provided with a mounting cavity 11, and one end of the mounting cavity 11 is provided with an opening 12; a contact portion 30, the contact portion 30 is connected to the base 10 and covers the opening 12, and is used to be in close contact with the skin surface to provide radiofrequency energy to the skin; and a support frame 20, the support frame 20 at least abuts the middle part of the contact portion 30 and is nested in the mounting cavity 11.

[0034] Specifically, the treatment head 100 includes a base 10, a support frame 20 and a contact part 30. The base 10 is used to install and fix components such as the support frame 20 and the contact part 30. The support frame 20 is used to provide support for the contact part 30. The contact part 30 includes a foldable flexible circuit and a conductive insulation layer covered on the opening 12 of the base 10. The flexible circuit is provided with a radio frequency electrode. When the conductive insulation layer of the contact part 30 is in close contact with the skin surface, the radio frequency electrode on the flexible circuit provides radio frequency energy to the skin, thereby achieving cosmetic effects such as skin tightening, wrinkle removal and lifting. The flexible circuit may also be provided with a temperature sensor for real-time detection of the skin treatment temperature.

[0035] The contact portion 30 is wrapped around the base 10 and covers the opening 12 of the base 10. The support frame 20 is disposed within the mounting cavity 11 of the base 10 to facilitate supporting the contact portion 30 from the inside. The support frame 20 abuts at least the middle portion of the contact portion 30. The abutment and fit between the support frame 20 and the contact portion 30 provide better support for the contact portion 30, preventing deformation or denting of the contact portion 30 due to long-term contact with the skin during treatment or excessive local pressure during use.

[0036] The support frame 20 can be configured as a hollow frame or a plate-shaped frame. The specific structure can be configured according to actual needs. The support frame 20 can be installed in the installation cavity 11 by limiting the support frame 20 to the side wall of the installation cavity 11 or by providing a fixed structure to fix the support frame 20. The specific installation method can be selected according to actual needs.

[0037] The edge of the contact part 30 is fixed on the base 10, and the support frame 20 supports the middle part of the contact part 30 from the inside, which can maintain the installation stability of the contact part 30. By designing the support frame 20, the middle treatment area of ​​the treatment head 100 is lifted up and supported stably. Even if used for a long time, the middle area of ​​the contact part 30 is not easy to sink, reducing the edge effect of the radio frequency current during the treatment process and preventing burns to the skin; at the same time, during use, the contact part 30 can be made close to the skin, so that the contact part 30 area is in close contact with the skin, thereby improving the use effect.

[0038] In addition, the material of the support frame 20 can be selected according to actual needs. In this embodiment, the support frame 20 is made of PEEK material, which has good elasticity, good strength, low temperature resistance and other properties.

[0039] The technical solution of the present invention is to set up a support frame 20, which is at least supported by the middle part of the contact part 30. Since the middle part of the contact part 30 is sunken due to the pressure of the skin and lacks the support force of the base 10 during treatment, the middle part of the contact part 30 is provided with support force during treatment, so that the contact part 30 can better adhere to the skin, and the middle part of the contact part 30 is not easy to be sunken, thereby extending the service life of the contact part 30 and increasing the service life of the treatment head 100.

[0040] In an embodiment of the present invention, the support frame 20 includes a support portion 21 and at least two support feet 22, and at least two of the support feet 22 are connected to the support portion 21 at intervals; the side of the support portion 21 facing away from the base 10 at least abuts against the middle of the contact portion 30, and is used to withstand the axial force applied by the contact portion 30; the support foot 22 abuts against the inner wall of the mounting cavity 11 and the inner wall applies a certain radial force to the support foot 22 and the support portion 21 to keep the support portion 21 in the mounting cavity 11.

[0041] In detail, the support portion 21 abuts against the contact portion 30, and a support foot 22 is provided. The support foot 22 is installed in the installation cavity 11, and is connected to the base 10 through a separate support foot 22, making the connection of the support frame 20 more convenient.

[0042] The support portion 21 provides support force to the contact portion 30 to prevent it from sinking; the support portion 21 is used to withstand the axial force applied by the contact portion 30, and the inner wall of the installation cavity 11 is used to apply a certain radial force to the support foot 22 to offset the axial force borne by the support portion 21 and keep the support frame 20 installed in the installation cavity 11.

[0043] The number of the support legs 22 is set to at least two, and the specific number can be selected according to actual needs. The support legs 22 and the base 10 can be connected by plug-in or snap-on connection, and the specific connection method can be selected according to actual needs.

[0044] In an embodiment of the present invention, at least two fixing columns 13 are provided on the inner wall of the installation cavity 11, and the supporting legs 22 are arranged in a one-to-one correspondence with the fixing columns 13. A fixing hole (not marked in the figure) is opened on the fixing column 13, and the supporting legs 22 are inserted into the fixing hole.

[0045] Specifically, such as Figure 1 and Figure 2 The fixing column 13 is connected to the inner wall of the base 10, and the support frame 20 is inserted into the fixing hole of the fixing column 13 through the supporting foot 22 at the bottom. The top of the support frame 20 is fitted with the contact part 30, so that the support frame 20 can be stably fixed in the installation cavity 11.

[0046] The number of the fixing columns 13 is set to at least two, and the specific number can be selected according to actual needs.

[0047] The support foot 22 is installed by plugging in, which makes the installation of the support frame 20 more convenient. By designing the fixing hole, the position or angle of the support foot 22 can be adjusted to adapt to different support requirements, which increases the flexibility of use. For example, the installation height of the support foot 22 can be adjusted so that the contact portion 30 abutted by the support portion 21 is flush with or higher than the opening 12, which is beneficial to reduce the edge effect of the contact portion 30.

[0048] In the embodiment of the present invention, a stopper 23 is protruded from the outer wall of the supporting foot 22 , and the stopper 23 abuts against the top surface of the fixing post 13 .

[0049] It is worth noting that a stop portion 23 is also provided, and the stop portion 23 is connected to the outer wall of the support leg 22. When the support leg 22 is inserted, the stop portion 23 is supported on the fixing column 13, so that the support leg 22 can be accurately installed to the correct position height, preventing over-insertion, which causes the support portion 21 to be separated from the contact portion 30, etc., and making the installation process simpler and faster. By setting the stop portion 23, the support frame 20 can be inserted into the correct position accurately.

[0050] In an embodiment of the present invention, the support portion 21 includes a central abutting portion 211 and at least two support arms 212, the central abutting portion 211 is hollow and circular, at least two support arms 212 are arranged to extend radially outward along the central abutting portion 211, and the support foot 22 is connected to one end of the support arm 212 away from the central abutting portion 211.

[0051] Specifically, the support portion 21 is configured to connect multiple support arms 212 on the periphery of the central abutment portion 211, and the multiple support arms 212 are provided outward along the central abutment portion 211 to form a hollow support frame 20; at this time, the load can be evenly distributed on each support arm 212, providing uniform support force and enhancing the stability of the contact portion 30.

[0052] The support legs 22 are bent and connected to the support arms 212 for easy insertion into the base 10. The number of support legs 22 can be set according to actual needs, and the support legs 22 can be connected to only a portion of the support arms 212, such as Figure 4 Alternatively, a support foot 22 may be connected to each support arm 212 to improve installation stability.

[0053] The shape and structure of the central abutting portion 211 for abutting the contact portion 30 can be set according to actual needs. It can be set to a hollow or hollow structure such as a hollow circle, a hollow square, a hollow S-shape, a hollow H-shape, or a hollow W-shape. The abutment between the top of the central abutting portion 211 and the contact portion 30 can also be set to point contact, line contact, or surface contact. It is understandable that the central abutting portion 211 is set to a hollow or hollow structure in order to facilitate the refrigerant to be sprayed from the hollow or hollow structure to the contact portion 30. Figure 4 and Figure 6 In one embodiment, the central abutting portion 211 is configured to be a hollow circle, and a plurality of support arms 212 are arranged at intervals along the circumference of the central abutting portion 211 and extend toward the outside to enhance the supporting force.

[0054] In addition, if Figures 4 to 10 The support portion 21 and the support foot 22 are integrally formed, which can improve the structural strength and the stability of the entire support frame 20, and can help maintain the position of the therapeutic device when the treatment head 100 is used for a long time.

[0055] In an embodiment of the present invention, the cross section of the support arm 212 is circular, and the cross section of the central abutting portion 211 is circular.

[0056] It is worth noting that the cross-sectional shapes of the support arm 212 and the central abutting portion 211 can be set according to actual needs, and can be set to be circular, square, or diamond.

[0057] In one embodiment, non-invasive radiofrequency treatment requires spraying refrigerant onto the contact portion 30 to cool the treated skin, alleviate discomfort during treatment, and reduce the risk of skin burns. The cross-sections of the support arm 212 and the central abutment portion 211 are set to be circular, that is, the support arm 212 is set to be an elongated cylindrical shape, the central abutment portion 211 is a elongated cylindrical shape, and the central grounding portion 211 has a hollow or hollow structure. This design ensures that when the support frame 20 is in contact with the contact portion 30, the contact area is small. When the refrigerant arrives, the contact area between the refrigerant and the contact portion 30 increases, thereby maintaining a good cooling effect.

[0058] In one embodiment, the support portion 21 includes a central abutting portion 211 and a plurality of support arms 212, the central abutting portion 211 is a hollow square, each corner of the central abutting portion 211 is connected to two support arms 212, and the support foot 22 is connected to one end of the support arm 212 away from the central abutting portion 211.

[0059] Specifically, such as Figure 9 and Figure 10When the central abutting portion 211 is set to a hollow square, two support arms 212 are connected to each corner of the central abutting portion 211, and the support frame 20 is in a well-shaped shape as a whole, and the cross-sections of the support arms 212 and the central abutting portion 211 are also square, which can provide better supporting force and improve the stability of the contact portion 30.

[0060] In an embodiment of the present invention, the support portion 21 includes a central abutment portion 211 and at least two support arms 212, at least two of the support arms 212 are cross-arranged, and the intersection of the two support arms 212 constitutes the central abutment portion 211, and the support foot 22 is connected to one end of the support arm 212 away from the central abutment portion 211.

[0061] In detail, the central abutment portion 211 is an intersection point, and at this time at least two support arms 212 are cross-arranged. Its structure is simple, can provide supporting force, and has a small contact area with the contact portion 30, which can ensure the cooling effect of the refrigerant on the contact portion 30.

[0062] In an embodiment of the present invention, a portion along the length direction of the support arm 212 is recessed to form an elastic arm 2121 , and the elastic arm 2121 is used to accommodate the deformation of the support arm 212 caused by the radial force applied by the installation cavity 11 .

[0063] It is worth noting that Figure 5 An elastic arm 2121 is recessed on the support arm 212 to accommodate the elastic deformation of the support arm 212 under the radial force applied by the installation cavity, so as to better maintain contact with the contact portion 30 for support.

[0064] In an embodiment of the present utility model, the support arm 212 is divided into a first section 2122 and a second section 2123 by the elastic arm 2121, and the two ends of the elastic arm 2121 are respectively connected to the first section 2122 and the second section 2123, wherein the first section 2122 is connected to the central abutting portion 211, and the second section 2123 is connected to an end of the first section 2122 away from the central abutting portion 211, and the first section 2122 is arranged higher than the second section 2123 in the direction toward the top surface of the central abutting portion.

[0065] In detail, such as Figure 5The center abutment portion 211 and the first section 2122 are slightly raised, higher than the second section 2123 and the support foot 22, and the height of the raised portion is preferably 0.3 mm, so that the middle contact portion 30 is slightly higher than the edge contact portion 30, so that the contact portion 30 is in close contact with the skin during use; when in use, the contact portion 30 fits the skin and applies force to the treatment head 100 at the same time, and elastic deformation is generated through the elastic arm 2121, which can enable the support frame 20 to maintain a downward pressure distance of 0.3 mm to keep the contact portion 30 horizontal.

[0066] By designing the support frame 20, the contact portion 30, that is, the top part of the treatment head 100, is lifted up. At the same time, the support frame 20 has a certain elastic deformation, so that the contact portion 30 has a slight arc convexity in its natural state. During use, it can be close to the skin, ensuring that the contact portion 30 area is in close contact with the skin. The contact portion 30 is not easy to be concave, which reduces the edge effect of the radio frequency current during treatment and prevents burns to the skin.

[0067] In an embodiment of the present invention, the contact portion 30 includes a middle portion 31 and a plurality of extension portions 32 connected to the periphery of the middle portion 31, the middle portion 31 covers the opening 12, the middle portion 31 is in contact with the support frame 20, and the extension portion 32 is connected to the side wall of the base 10 through an adhesive layer.

[0068] It is worth noting that flexible circuits can be folded, e.g. Figure 2 The extensions 32 are arranged in a one-to-one correspondence with the side walls of the base 10 and secured to the side walls of the base 10 via an adhesive layer, so that the middle portion 31 covers the opening 12 of the base 10 and abuts against the support frame 20. The provision of the extensions 32 provides a larger adhesive surface for the contact portion 30, maintaining installation stability and reducing movement or sagging during treatment. Furthermore, the extensions 32 provide a better abutment and fit with the support frame 20, thereby securing the support frame 20.

[0069] The present invention also provides a non-invasive radiofrequency therapeutic apparatus, which includes a handle (not shown) and the above-mentioned treatment head 100 , wherein the handle is detachably connected to the treatment head 100 .

[0070] Specifically, in the non-invasive RF therapy device, the treatment head 100 is detachably connected to a handle. A PCB is housed within the handle, controlling the flexible circuitry on the contact portion 30 of the treatment head 100 to form a radiofrequency current loop, thereby delivering radiofrequency energy to the skin tissue. The non-invasive RF therapy device also includes a main unit connected to the handle with wires. The treatment head 100, the handle, and the main unit form a refrigerant conduit, allowing refrigerant to flow from the main unit to the treatment head 100, cooling the contact portion 30.

[0071] The specific structure of the treatment head 100 refers to the above embodiments. Since the non-invasive radiofrequency therapeutic device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0072] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A treatment head, used in a non-invasive radiofrequency treatment device, characterized in that: The treatment head comprises: A base, wherein the base is provided with a mounting cavity, and one end of the mounting cavity is provided with an opening; a contact portion connected to the base and covering the opening, configured to be in close contact with the skin surface to provide radio frequency energy to the skin; and A support frame is provided, wherein the support frame at least abuts against a middle portion of the contact portion and is nested in the installation cavity.

2. The treatment head according to claim 1, wherein: The support frame includes a support portion and at least two support legs, and the at least two support legs are connected to the support portion at intervals; The side of the support portion facing away from the base at least abuts against the middle portion of the contact portion and is used to withstand the axial force applied by the contact portion; The supporting foot abuts against the inner wall of the installation cavity, and the inner wall applies a certain radial force to the supporting foot and the supporting portion to keep the supporting portion in the installation cavity.

3. The treatment head according to claim 2, wherein: At least two fixing columns are provided on the inner wall of the installation cavity, and the supporting feet are arranged in a one-to-one correspondence with the fixing columns. A fixing hole is opened on the fixing column, and the supporting feet are inserted into the fixing hole; a stop portion is convexly provided on the outer wall of the supporting foot, and the stop portion abuts against the top surface of the fixing column.

4. The treatment head according to claim 2, wherein: The supporting portion includes a central abutting portion for abutting at least a middle portion of the contact portion, and the central abutting portion includes a hollow or openwork structure, and is used for the refrigerant to pass through the hollow or openwork structure and be sprayed onto the contact portion.

5. The treatment head according to claim 4, wherein: The support portion includes the central abutment portion and at least two support arms, the central abutment portion is hollow and circular, at least two support arms are arranged to extend radially outward along the central abutment portion, and the support foot is connected to one end of the support arm away from the central abutment portion.

6. The treatment head according to claim 4, wherein: The support portion includes the central abutment portion and a plurality of support arms. The central abutment portion is a hollow square. Each corner of the central abutment portion is connected to two support arms. The support foot is connected to one end of the support arm away from the central abutment portion.

7. The treatment head according to claim 4, wherein: The support portion includes the central abutment portion and at least two support arms, the at least two support arms are cross-arranged, the intersection of the two support arms constitutes the central abutment portion, and the support foot is connected to one end of the support arm away from the central abutment portion.

8. The treatment head according to any one of claims 5 to 7, characterized in that: A portion along the length direction of the support arm is recessed to form an elastic arm, and the elastic arm is used to accommodate the deformation of the support arm caused by the radial force applied by the installation cavity.

9. The treatment head according to claim 8, wherein: The support arm is divided into a first section and a second section by the elastic arm; the two ends of the elastic arm are respectively connected to the first section and the second section, wherein the first section is connected to the central abutting portion, and the second section is connected to an end of the elastic arm away from the central abutting portion, and the first section is arranged higher than the second section in the direction toward the top of the central abutting portion.

10. A non-invasive radiofrequency therapeutic device, characterized in that: The non-invasive radiofrequency therapeutic apparatus comprises a host and a treatment head according to any one of claims 1 to 9, wherein the host is connected to the treatment head.