Needle assembly, radio frequency therapy head and radio frequency therapeutic apparatus

Abstract

Disclosed in the present application are a needle assembly, a radio frequency therapy head and a radio frequency therapeutic apparatus. The needle assembly comprises a needle plate structure, first needle bodies and second needle bodies; the first needle bodies are installed on the needle plate structure, and there are a plurality of the first needle bodies; the second needle bodies are installed on the needle plate structure, and there are a plurality of the second needle bodies; the first needle bodies and the second needle bodies are spaced apart in a first direction; and the polarity of the second needle bodies is opposite to that of the first needle bodies. An external electric device is suitable for being electrically connected to the needle plate structure and / or the first needle bodies and the second needle bodies, so as to enable the first needle bodies and the second needle bodies to emit electric energy.

Description

Needle assembly, radiofrequency treatment head and radiofrequency treatment device

[0001] This application claims priority to Chinese patent application No. 202311864963.1 filed on December 29, 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 needle assembly, a radio frequency treatment head, and a radio frequency treatment apparatus. Background Art

[0003] Radiofrequency microneedle therapy is widely used in the medical aesthetics industry. Microneedles are inserted into the target area through minimally invasive techniques to a certain depth, then energized to release radiofrequency energy, achieving cosmetic results. Radiofrequency therapy is also widely used to treat axillary odor (BMI). BMI is caused by the presence of a large number of apocrine sweat glands in the dermis and subcutaneous fat layers. By penetrating the dermis and subcutaneous fat layers with radiofrequency microneedles and maintaining the temperature at 70°C to 80°C for a period of time, the apocrine sweat glands in these layers are destroyed, thereby treating the odor.

[0004] Existing radiofrequency therapeutic devices use multiple monopolar radiofrequency needles connected to a single conductive sheet. To treat underarm odor, the needles are inserted deep into the skin, while a return electrode is attached to the skin's surface. Radiofrequency energy is transferred between the needles and the return electrode, achieving the desired therapeutic effect. However, due to the edge effect, energy is concentrated in the needles at the edges of the conductive sheet, causing excessively high temperatures at the edges, potentially causing burns. The energy in the middle of the needles is weaker and cooler, leading to uneven temperatures between the needles and preventing the desired therapeutic effect. Technical issues

[0005] The main purpose of this application is to provide a needle assembly, which aims to solve the problem of uneven temperature between multiple needle bodies during existing radiofrequency treatment. Technical Solutions

[0006] To achieve the above-mentioned purpose, the needle assembly proposed in the present application includes a needle plate structure, a first needle body and a second needle body; the first needle body is installed on the needle plate structure, and the number of the first needle bodies is several; the second needle body is installed on the needle plate structure, and the number of the second needle bodies is several, the first needle body and the second needle body are arranged at intervals along the first direction, the second needle body has an opposite polarity to the first needle body, and an external electrical device is suitable for being electrically connected to the needle plate structure and / or the first needle body and the second needle body so that the first needle body and the second needle body emit electrical energy.

[0007] In one embodiment of the present application, the number of the first needle bodies and the number of the second needle bodies are both two, and the two first needle bodies are located between the two second needle bodies.

[0008] In one embodiment of the present application, the distance between the two first needle bodies is smaller than the distance between the first needle body and the second needle body.

[0009] In one embodiment of the present application, the needle board structure includes a first circuit board, the first needle body and the second needle body are respectively mounted on the first circuit board, and the first circuit board is electrically connected to the first needle body and the second needle body respectively.

[0010] In one embodiment of the present application, the needle board structure further includes a connecting piece, one end of which is electrically connected to the first circuit board of the needle assembly, and the other end of which is suitable for being electrically connected to an external electrical device.

[0011] In one embodiment of the present application, the needle plate structure further includes a second circuit board, which is electrically connected to the first circuit board and the adapter respectively, and the second circuit board is located between the first circuit board and the adapter.

[0012] The present application also proposes a radiofrequency treatment head, comprising a first shell and a needle assembly as described above, wherein the needle assembly is installed in the first shell and is limitedly engaged with the first shell.

[0013] In one embodiment of the present application, the radio frequency treatment head further includes a connector, which is connected to the first shell, and the needle assembly is connected to the connector. The connector and the needle assembly are located inside the first shell, and the needle assembly is partially exposed from the first shell.

[0014] In one embodiment of the present application, the connector includes a connector body and two oppositely arranged wall plates, and the needle assembly is respectively limitedly engaged with the wall plates and the connector body to achieve fixation of the needle assembly.

[0015] In one embodiment of the present application, the end surface of the wall panel is recessed to form a limiting groove, and the first circuit board of the needle assembly is installed in the limiting groove. The connecting member also includes a hook, which is located on the connecting member body, and the hook is limitedly matched with the adapter of the needle assembly.

[0016] In one embodiment of the present application, a first protruding structure is provided on the connector body, an opening is provided at one end of the first shell, and a plurality of pinholes are provided at the other end, a clamping hole is provided on the peripheral side of the first shell, one end of the connector is inserted through the opening, the first protruding structure is clamped in the clamping hole, and the first needle body and the second needle body portion of the needle assembly pass through one of the pinholes and are exposed on the outside of the first shell.

[0017] In one embodiment of the present application, the pinhole is contracted along the axial direction of the first shell.

[0018] In one embodiment of the present application, a first limit member and a second limit member are protruding from the inner wall of the first shell, the wall panel includes a second protruding structure, the second protruding structure is located on the end face of the wall panel close to the needle hole, the second protruding structure abuts against the second limit member, and the second circuit board of the needle assembly abuts against the first limit member.

[0019] In one embodiment of the present application, a guide member is further protruded from the inner wall of the first shell, and a guide groove is formed in a depression on the connecting member. Both the guide groove and the guide member extend along the axial direction of the first shell, and one end of the connecting member is inserted into the first shell through the opening, and the guide member is inserted into the guide groove.

[0020] In one embodiment of the present application, both sides of the first shell are recessed to form gripping grooves, and the gripping grooves are used for an operator to grip the radiofrequency treatment head;

[0021] And / or, the transverse dimension of the first shell gradually decreases from an end away from the first needle body to an end close to the first needle body.

[0022] In one embodiment of the present application, the radio frequency treatment head also includes a second shell, which is arranged outside the first shell, and the second shell is slidably connected to the first shell. The first shell moves along the second direction relative to the second shell to adjust the length of the first needle body and the second needle body of the needle assembly extending out of the second shell.

[0023] In one embodiment of the present application, the connecting member is slidably connected to the first shell, and the connecting member moves along the second direction relative to the first shell to adjust the length of the first needle body and the second needle body of the needle assembly extending out of the first shell.

[0024] The present application also proposes a radio frequency therapy device, comprising a radio frequency therapy head as described above, a cable and a power supply device, wherein both ends of the cable are electrically connected to the radio frequency therapy head and the power supply device respectively. Beneficial effects

[0025] The needle assembly proposed in the technical solution of this application includes a needle plate structure, a first needle body, and a second needle body. The first needle body and the second needle body are both installed on the same side of the needle plate structure, and there are multiple first needle bodies and multiple second needle bodies. Multiple first needle bodies and multiple second needle bodies are arranged in a line along the first direction, and the first needle body and the second needle body are respectively connected to different electrical output terminals of an external power supply device, so that the polarity of the first needle body and the second needle body are opposite, realizing bipolar radio frequency, and the radio frequency current is conducted between the first needle body and the second needle body of opposite polarity. Compared with the monopolar needle body of the existing radio frequency treatment head, the structural design of this application reduces the impact of the edge effect on the uneven radio frequency energy, thereby improving the temperature uniformity between the multiple needle bodies and improving the uniformity of radio frequency treatment. At the same time, the multiple first needle bodies and the second needle bodies are arranged in a line array, so that when the radio frequency treatment head is used for radio frequency treatment, when the radio frequency treatment head is tilted in a direction perpendicular to the needle body arrangement, it can also ensure that the depth of the multiple needle bodies inserted into the skin is the same, thereby improving the uniformity of needle body treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] FIG1 is a schematic structural diagram of the needle assembly of the present application;

[0028] FIG2 is a schematic structural diagram of the radiofrequency treatment head of the present application;

[0029] FIG3 is an exploded view of the radiofrequency treatment head of FIG2 ;

[0030] FIG4 is a schematic structural diagram of the first shell of the radiofrequency treatment head in FIG3 ;

[0031] FIG5 is a schematic structural diagram of the connector in the radiofrequency treatment head of FIG3 .

[0032] Description of Figure Numbers:

[0033] Reference number name Reference number name 1 needle assembly 206 guide member 10 first circuit board 21 second circuit board 11 first needle body 22 adapter 12 second needle body 23 connector 2 radio frequency treatment head 231 hook 20 housing 232 mounting cavity 201 needle hole 233 limiting groove 202 locking hole 234 second protruding structure 203 holding groove 235 guide groove 204 first limiting member 236 first protruding structure 205 second limiting member

[0034] 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. Modes for Carrying Out the Invention

[0035] 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.

[0036] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) 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.

[0037] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In addition, the descriptions of "first", "second", etc. in this application 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 specified as "first" and "second" may explicitly or implicitly include at least one of the features. The meanings of "and / or" and "and / or" appearing throughout the text are the same, both indicating that three parallel solutions are included. Taking "A and / or B" as an example, it includes Solution A, or Solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually 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.

[0039] The present application proposes a needle assembly 1 .

[0040] As shown in Figure 1, in one embodiment of the present application, it includes a needle plate structure, a first needle body 11 and a second needle body 12; the first needle body 11 is installed on the needle plate structure, and the number of the first needle body 11 is several; the second needle body 12 is installed on the needle plate structure, and the number of the second needle body 12 is several, the first needle body 11 and the second needle body 12 are arranged at intervals along the first direction, and the polarity of the second needle body 12 is opposite to that of the first needle body 11, and the external electrical device is suitable for being electrically connected to the needle plate structure and / or the first needle body 11 and the second needle body 12 so that the first needle body 11 and the second needle body 12 emit electrical energy.

[0041] The first direction mentioned in the present application is the direction along the X-axis in the coordinate system defined in FIG1 . In the present embodiment, the material of the first needle body 11 and the second needle body 12 may be a conductor or an insulator, and an electrode layer is electroplated on the surface of the insulator. The number of the first needle body 11 and the second needle body 12 may be 2, 3, 4, 5, etc., so as to treat skin areas of different sizes at the same time. The first needle body 11 and the second needle body 12 are respectively connected to the output ends of the external power supply device with different electrical properties, so that the first needle body 11 and the second needle body 12 are respectively the positive needle body and the negative needle body, to realize bipolar radio frequency treatment, and radio frequency energy is transmitted between the first needle body 11 and the second needle body 12. Compared with the monopolar needle body of the existing radio frequency treatment head 2, the structural design of the present application reduces the influence of the edge effect on the uneven radio frequency energy, thereby improving the temperature uniformity between the multiple needle bodies and improving the uniformity of radio frequency treatment.

[0042] At the same time, the first needle body 11 and the second needle body 12 are arranged at intervals along the first direction, that is, the first needle body 11 and the second needle body 12 are arranged in a straight line array, so that when the radio frequency treatment head 2 is used for radio frequency treatment, when the radio frequency treatment head 2 is tilted in a direction perpendicular to the first direction, it can also ensure that the depth of multiple needle bodies inserted into the skin is the same, so as to improve the uniformity of the needle body treatment. It can be understood that the external power supply device can provide electrical energy to the first needle body 11 and the second needle body 12 through the needle plate structure. At this time, the first needle body 11 and the second needle body 12 are electrically connected to the needle plate structure by soldering. The external power supply device can also be directly electrically connected to the first needle body 11 and the second needle body 12. At this time, the second needle body 12 and the first needle body 11 are inserted into the needle plate structure, and the needle plate structure plays a role in fixing the first needle body 11 and the second needle body 12.

[0043] 1 , in one embodiment of the present application, there are two first needle bodies 11 and two second needle bodies 12 , and the two first needle bodies 11 are located between the two second needle bodies 12 .

[0044] In this embodiment, since the polarities of the first needle body 11 and the second needle body 12 are opposite, the two first needle bodies 11 are arranged between the two second needle bodies 12, and the polarities of the four needle bodies arranged in a line are respectively '+ - - +' or '- + + -'. At this time, the radio frequency energy is transmitted between the two adjacent positive needle bodies and the negative needle bodies, reducing the distance between the positive needle body and the negative needle body, further reducing the influence of the edge effect on the radio frequency treatment, and thereby improving the temperature uniformity of the radio frequency treatment.

[0045] Continuing to refer to FIG. 1 , in one embodiment of the present application, the distance between the two first needle bodies 11 is smaller than the distance between the first needle body 11 and the second needle body 12 .

[0046] In this embodiment, when radio frequency energy is transmitted between the positive electrode needle body and the negative electrode needle body, due to the influence of the edge effect, since the energy is range-type, its energy distribution will be closer to the second needle body 12 located at the edge, and the energy distribution between the two first needle bodies 11 will be relatively reduced. Therefore, by setting the distance between the two first needle bodies 11 to be smaller than the distance between the first needle body 11 and the second needle body 12, the problem of energy unevenness can be effectively alleviated. After the distance is reduced, the energy distribution of the two groups of needle bodies close to the side of the first needle body 11 will increase due to the reduction in the distance, so as to reduce the influence of the edge effect on the radio frequency energy unevenness and further improve the temperature uniformity during radio frequency treatment.

[0047] Please continue to refer to Figure 1. In one embodiment of the present application, the needle board structure includes a first circuit board 10, and the first needle body 11 and the second needle body 12 are respectively installed on the first circuit board 10. The first circuit board 10 is electrically connected to the first needle body 11 and the second needle body 12 respectively.

[0048] In this embodiment, the needle plate structure can be a first circuit board 10, and the first needle body 11 and the second needle body 12 are electrically connected to the first circuit board 10 by welding, while reducing the complexity of the structure. The external power supply device is electrically connected to the first needle body 11 and the second needle body 12 through the first circuit board 10. At this time, a circuit element for adjusting the radio frequency parameters can be set on the first circuit board 10, thereby improving the radio frequency treatment effect of the first needle body 11 and the second needle body 12. At the same time, the needle plate structure can also include a first circuit board 10 and a fixing part, the first needle body 11 and the second needle body 12 are electrically connected to the first circuit board 10, and the two ends of the fixing part are respectively connected to the first circuit board 10 and the needle body, thereby improving the connection strength of the first needle body 11 and the second needle body 12 to the first circuit board 10.

[0049] As shown in FIG3 , in one embodiment of the present application, the needle board structure further includes an adapter 22 , one end of which is electrically connected to the first circuit board 10 of the needle assembly 1 , and the other end of which is suitable for being electrically connected to an external electrical device.

[0050] In this embodiment, the adapter 22 is used to electrically connect the first circuit board 10 to the external power supply. The adapter 22 is disposed at the end of the first housing 20 facing away from the pin assembly 1. The end of the adapter 22 facing the first circuit board 10 is provided with multiple electrical connection terminals, each of which is electrically connected to the first circuit board 10. The end of the adapter 22 facing away from the first circuit board 10 is provided with multiple electrical connection ports, into which power supply probes of the external power supply are inserted to electrically connect the first circuit board 10 to the external power supply. The provision of the adapter 22 further improves the convenience of connecting the first circuit board 10 to the external electrical connection device.

[0051] Please continue to refer to Figure 3. In one embodiment of the present application, the needle plate structure also includes a second circuit board 21, which is electrically connected to the first circuit board 10 and the adapter 22 respectively, and the second circuit board 21 is located between the first circuit board 10 and the adapter 22.

[0052] In this embodiment, the radio frequency energy provided by the external power supply device needs to pass through multiple circuit elements and then be electrically connected to the first needle body 11 and the second needle body 12, such as capacitors, resistors, and inductors, to modulate the radio frequency energy and filter out interference, thereby increasing the radio frequency energy released by the first needle body 11 and the second needle body 12 and the temperature generated to be the same as the set value. Therefore, by setting the second circuit board 21, some circuit elements can be set on the second circuit board 21, and the second circuit board 21 is set to extend along the axial direction of the first shell 20 to reduce the lateral size of the first circuit board 10, so that the lateral size of the first shell 20 can be set smaller, thereby facilitating the operator to hold it, thereby improving the convenience of radio frequency treatment. In this embodiment, the adapter 22 is electrically connected to the second circuit board 21, and the second circuit board 21 is electrically connected to the first circuit board 10, thereby realizing the electrical connection between the external power supply device and the needle assembly 1. Furthermore, a notch is provided at one end of the second circuit board 21 facing the first circuit board 10. The first circuit board 10 is positioned within the notch. A solder joint for connecting the first needle body 11 and the second needle body 12 is provided on the side of the first circuit board 10 facing the notch. The notch protects the solder joints on the first circuit board 10 from air gaps and reduces the bulk of the needle assembly 1. The two ends of the first circuit board 10 are soldered to the two ends of the notch in the second circuit board 21, thereby achieving electrical connection between the first circuit board 10 and the second circuit board 21.

[0053] This application also proposes a radio frequency treatment head 2.

[0054] As shown in FIG2 , one embodiment of the present application includes a first housing 20 and a needle assembly 1. The specific structure of the needle assembly 1 is similar to that of the aforementioned embodiments. Since the RF treatment head 2 utilizes all the technical solutions of all the aforementioned embodiments of the needle assembly 1, it at least possesses all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and therefore, no further details are given here. The needle assembly 1 is mounted within the first housing 20 and engages with the first housing 20 in a position-limiting manner.

[0055] In this embodiment, the first housing 20 serves to secure and protect the needle assembly 1. The needle assembly 1 can be directly connected to the first housing 20. For example, a slot can be provided on the inner wall of the first housing 20, and the first circuit board 10 can be secured within the slot to connect the needle assembly 1 to the first housing 20. Alternatively, the needle assembly 1 and the first housing 20 can be connected via a connector 23. One end of the first housing 20 serves as the treatment end. During radiofrequency treatment, the treatment end contacts the surface of the treatment target, and the first and second needle bodies 11, 12 extend from the treatment end and penetrate the skin, thereby treating underarm odor.

[0056] As shown in Figures 2 and 3, in one embodiment of the present application, the radiofrequency treatment head 2 also includes a connector 23, the connector 23 is connected to the first shell 20, the needle assembly 1 is connected to the connector 23, the connector 23 and the needle assembly 1 are located in the first shell 20, and the needle assembly 1 is partially exposed from the first shell 20.

[0057] In this embodiment, the connector 23 is open at both ends and has an internal mounting cavity 232. When assembling the RF therapy head 2, the needle assembly 1 is first installed in the mounting cavity 232 within the connector 23. The connector 23 is then inserted into the first housing 20, completing the installation of the RF therapy head 2. Because it is inconvenient to directly install the needle assembly 1 within the first housing 20, the provision of the connector 23 further enhances the ease of assembly of the RF therapy head 2.

[0058] As shown in FIG. 5 , in one embodiment of the present application, the connector 23 includes a connector body 23 and two oppositely disposed wall plates, and the needle assembly 1 is respectively limitedly engaged with the wall plates and the connector body 23 to achieve fixation of the needle assembly 1 .

[0059] In this embodiment, a wall plate is positioned on the same side of the connector 23 body, with a gap between the two opposing wall plates to facilitate installation of the needle assembly 1 on the connector 23. The connector 23 body also has an opening, allowing the needle assembly 1 to be installed on the connector 23 through the opening. Furthermore, during installation, the adapter 22 in the needle assembly 1 can be snapped into the opening, and the first circuit board 10 and / or the second circuit board 21 can be snapped into the wall plate or the junction between the wall plate and the connector 23 body, thereby securing the needle assembly 1 in place and improving structural stability.

[0060] As shown in Figure 5, in one embodiment of the present application, the end surface of the wall panel is recessed to form a limiting groove 233, and the first circuit board 10 of the needle assembly 1 / needle plate structure is installed in the limiting groove 233. The connecting member 23 also includes a hook 231, which is located on the main body of the connecting member 23. The hook 231 is limited and cooperates with the adapter 22 of the needle assembly 1 / needle plate mechanism.

[0061] In this embodiment, when assembling the radiofrequency treatment head 2, the needle assembly 1 / needle plate structure can be directly installed on the connector 23. The limiting groove 233 is provided on two opposite wall plates of the connector 23, and its size is adapted to the size of the first circuit board 10. By locking the first circuit board 10 in the limiting groove 233, the movement of the first circuit board 10 toward the side of the hook 231 is restricted, that is, the movement of the first circuit board 10 along the negative direction of the Z axis in the coordinate system positioned in Figure 5 is restricted. At the same time, a groove is provided on the adapter 22, and the hook 231 is locked in the groove, thereby restricting the movement of the adapter 22 toward the limiting groove 233, that is, limiting the movement of the adapter 22 along the positive direction of the Z axis in the coordinate system positioned in Figure 5. Therefore, by setting the limiting groove 233 and the hook 231, the needle assembly 1, the first circuit board 10, the second circuit board 21, the adapter 22 and the connector 23 are assembled into a stable whole, and then the whole structure is installed in the first shell 20, thereby realizing the assembly of the radio frequency treatment head 2, thereby improving the stability and convenience of the assembly of the various components of the radio frequency treatment head 2.

[0062] As shown in Figures 3 to 5, in one embodiment of the present application, a first protruding structure 236 is protruded from the main body of the connecting member 23, an opening is provided at one end of the first shell 20, and a plurality of needle holes 201 are provided at the other end. A clamping hole 202 is provided on the peripheral side of the first shell 20, and one end of the connecting member 23 is inserted through the opening, and the first protruding structure 236 is clamped in the clamping hole 202. The first needle body 11 and the second needle body 12 of the needle assembly 1 partially pass through a needle hole 201 and are exposed on the outside of the first shell 20.

[0063] In this embodiment, the needle assembly 1, first circuit board 10, second circuit board 21, adapter 22, and connector 23 are assembled into a stable whole before the connector 23 is connected to the first housing 20. It will be appreciated that the first protrusion 236 provided on the body of the connector 23 can be moved radially along the first housing 20 by applying external pressure. Upon cessation of pressure, the first protrusion 236 rebounds to its initial position, thereby enhancing the convenience of removable connection between the connector 23 and the first housing 20. The number and position of the needle holes 201 provided in the first housing 20 correspond to those of the first and second needle bodies 11, 12. The walls of the needle holes 201 also serve as a limiter for the first and second needle bodies 11, 12, improving the stability of the first and second needle bodies 11, 12 during axial movement along the first housing 20.

[0064] As shown in FIG4 , in one embodiment of the present application, the pinhole 201 is axially contracted along the first housing 20 . The pinhole 201 may be conical, truncated, or truncated-conical in shape. By configuring the pinhole 201 in a contracted shape with the larger end facing the first circuit board 10 , the pinhole 201 serves as a guide when inserting the first and second pin bodies 11 and 12 into the first housing 20 , thereby improving assembly convenience.

[0065] As shown in Figures 4 and 5, in one embodiment of the present application, a first limit member 204 and a second limit member 205 are protruded from the inner wall of the first shell 20, and the wall panel includes a second protruding structure 234. The second protruding structure 234 is located on the end face of the wall panel close to the needle hole 201, and the second protruding structure 234 abuts against the second limit member 205, and the second circuit board 21 of the needle assembly 1 abuts against the first limit member 204.

[0066] In this embodiment, the first limit member 204 and the second limit member 205 are arranged in a ring on the inner wall of the first shell 20. When the needle assembly 1, the first circuit board 10, the second circuit board 21, the adapter 22 and the connector 23 are assembled into a stable whole, the whole structure is inserted into the first shell 20. At this time, the first limit member 204 and the second limit member 205 play a limiting role in the direction from the needle hole 201 to the opening of the first shell 20, that is, limiting the movement of the whole structure along the positive direction of the X-axis in the coordinate system defined in Figure 5. It can be seen from the above embodiment that the whole structure is clamped by the clamping hole 202 and the first protrusion structure 236. The clamping hole 202 limits the movement of the whole structure along the negative direction of the X-axis in the coordinate system defined in Figure 5. Therefore, the overall stability of the components of the radio frequency treatment head 2 after assembly is improved by setting the first limit member 204 and the second limit member 205.

[0067] Please continue to refer to Figures 4 and 5. In one embodiment of the present application, a guide member 206 is further protruded from the inner wall of the first shell 20, and a guide groove 235 is recessed on the connecting member 23. The guide groove 235 and the guide member 206 are both extended along the axial direction of the first shell 20. One end of the connecting member 23 is inserted into the first shell 20 through the opening, and the guide member 206 is inserted into the guide groove 235.

[0068] In this embodiment, the shapes of the guide member 206 and the guide groove 235 are adapted to each other. When the connector 23 is inserted into the first housing 20, the sliding fit between the guide member 206 and the guide groove 235 allows the first needle body 11 and the second needle body 12 to precisely fit within the needle hole 201, thereby improving the efficiency and convenience of assembling the radiofrequency treatment head 2. It is understood that the above-mentioned effect can also be achieved by providing the guide groove 235 on the inner wall of the first housing 20 and protruding the guide member 206 from the outer side of the connector 23.

[0069] As shown in FIG2 , in one embodiment of the present application, both sides of the first shell 20 are recessed to form a gripping groove 203 , which is used for an operator to grip the radiofrequency treatment head 2 ;

[0070] And / or, the transverse dimension of the first housing 20 gradually decreases from an end away from the first needle body 11 to an end close to the first needle body 11 .

[0071] In this embodiment, a gripping groove 203 is provided to facilitate gripping by the operator, and an anti-slip texture can be further provided at the bottom of the gripping groove 203, thereby increasing the friction between the first shell 20 and the hand during gripping, thereby improving the gripping stability.

[0072] With or without limiting the provision of a gripping groove 203 on the first shell 20, the lateral dimension of the first shell 20 gradually decreases from the end away from the first needle body 11 to the end close to the first needle body 11, that is, the shape of the first shell 20 is contracted. Since the first needle body 11 and the second needle body 12 are exposed at the end of the first shell 20, by setting the first shell 20 to a contracted shape, the outer wall of the first shell 20 is reduced from blocking the first needle body 11 and the second needle body 12, thereby improving the convenience for medical staff to control the needle body from piercing the skin during radio frequency treatment.

[0073] In one embodiment of the present application, the radio frequency treatment head 2 also includes a second shell, which is arranged outside the first shell 20. The second shell is slidably connected to the first shell 20, and the first shell 20 moves relative to the second shell along the second direction to adjust the length of the first needle body 11 and the second needle body 12 of the needle assembly 1 extending out of the second shell.

[0074] In this embodiment, the second direction is the direction along the Z axis in the coordinate system defined in FIG. 3 . The first needle 11 and the second needle 12 are fixed within the first housing 20, with one end each extending outside the first housing 20. The second housing is sleeved on the outside of the first housing 20, and the second housing and the first housing 20 can be threadedly connected. By rotating the second housing, the second housing can be moved axially relative to the first housing 20, thereby extending or retracting the first needle 11 and the second needle 12 within the second housing. During radiofrequency treatment, one end of the second housing contacts the skin of the patient. The treatment depth of the radiofrequency treatment head 2 can be adjusted by adjusting the length of the first needle 11 and the second needle 12 extending from the second housing.

[0075] In one embodiment of the present application, the connecting member 23 is slidably connected to the first shell 20, and the connecting member 23 moves along the second direction relative to the first shell 20 to adjust the length of the first needle body 11 and the second needle body 12 of the needle assembly 1 extending out of the first shell 20.

[0076] In this embodiment, the second direction is the direction along the Z-axis in the coordinate system defined in Figure 3. The connecting member 23 and the inner wall of the first shell 20 can be clearance-fitted. By setting an adjusting member and connecting the adjusting member to the connecting member 23, the adjusting member is movably connected to the first shell 20. By rotating the adjusting member or pushing the adjusting member to move axially along the first shell 20, the connecting member 23 is driven to drive the first needle body 11 and the second needle body 12 to extend or retract into the first shell 20, thereby achieving the purpose of adjusting the depth of the first needle body 11 and the second needle body 12 penetrating the skin.

[0077] The present application also proposes a radio frequency therapeutic device, which includes a radio frequency therapeutic head 2, a cable and a power supply device. The specific structure of the radio frequency therapeutic head 2 refers to the above embodiment. Since the radio frequency therapeutic device adopts all the technical solutions of all the embodiments of the above-mentioned radio frequency therapeutic head 2, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0078] In one embodiment of the present application, the two ends of the cable are respectively connected to the radiofrequency treatment head 2 and the power supply device. The power supply device is electrically connected to the radiofrequency treatment head 2 through the cable, so that the first needle body 11 and the second needle body 12 generate bipolar radiofrequency energy for the treatment of underarm odor.

[0079] The above descriptions are merely some embodiments of the present application and are not intended to limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A needle assembly, wherein, The needle assembly includes: A needle plate structure; A first needle body, the first needle body is installed on the needle plate structure, and the number of the first needle bodies is several; A second needle body, the second needle body is installed on the needle plate structure, and the number of the second needle bodies is several. The first needle body and the second needle body are arranged at intervals along a first direction, and the second needle body has a polarity opposite to that of the first needle body. An external electrical device is adapted to be electrically connected to the needle plate structure and / or the first needle body and the second needle body, so that the first needle body and the second needle body emit electrical energy.

2. The needle assembly according to claim 1, wherein, The number of both the first needle body and the second needle body is two, and both of the two first needle bodies are located between the two second needle bodies.

3. The needle assembly according to claim 2, wherein, The distance between the two first needle bodies is less than the distance between the first needle body and the second needle body.

4. The needle assembly according to claim 1, wherein, The needle plate structure includes a first circuit board, the first needle body and the second needle body are respectively installed on the first circuit board, and the first circuit board is electrically connected to the first needle body and the second needle body respectively.

5. The needle assembly according to claim 4, wherein, The needle plate structure further includes an adapter, one end of the adapter is electrically connected to the first circuit board of the needle plate structure, and the other end is adapted to be electrically connected to an external electrical device.

6. The needle assembly according to claim 5, wherein, The needle plate structure further includes a second circuit board, the second circuit board is electrically connected to the first circuit board and the adapter respectively, and the second circuit board is located between the first circuit board and the adapter.

7. A radiofrequency treatment head, wherein, It includes a first housing and the needle assembly according to any one of claims 1 to 6, the needle assembly is installed in the first housing and is in limit fit with the first housing.

8. The radiofrequency treatment head according to claim 7, wherein, The radiofrequency treatment head further includes a connecting member, the connecting member is connected to the first housing, the needle assembly is connected to the connecting member, the connecting member and the needle assembly are located in the first housing, and a part of the needle assembly is exposed outside the first housing.

9. The radiofrequency treatment head according to claim 8, wherein, The connecting member includes a connecting member body and two oppositely arranged wall plates, and the needle assembly is in limit fit with the wall plates and the connecting member body respectively to realize the fixation of the needle assembly.

10. The radiofrequency treatment head according to claim 9, wherein, A limiting groove is formed by recessing the end face of the wall plate, the first circuit board of the needle assembly / needle plate structure is installed in the limiting groove, the connecting member further includes a hook, the hook is located on the connecting member body, and the hook is in limit fit with the adapter of the needle assembly\needle plate structure.

11. The radiofrequency treatment head according to claim 9, wherein, A first convex structure protrudes from the connecting member body, an opening is formed at one end of the first housing, a plurality of needle holes are formed at the other end, a clamping hole is formed on the circumferential side of the first housing, one end of the connecting member is inserted through the opening, the first convex structure is clamped in the clamping hole, and the first needle body and the second needle body of the needle assembly partially pass through one of the needle holes and are exposed outside the first housing.

12. The radiofrequency treatment head according to claim 11, wherein, The needle hole is in a contracted shape along the axial direction of the first housing.

13. The radiofrequency treatment head according to claim 11, wherein, A first limiting member and a second limiting member protrude from the inner wall of the first housing, the wall plate includes a second convex structure, the second convex structure is located on the end face of the wall plate close to the needle hole, the second convex structure abuts against the second limiting member, and the second circuit board of the needle assembly / needle plate structure abuts against the first limiting member.

14. The radiofrequency treatment head according to claim 11, wherein, The inner wall of the first housing further protrudes with a guiding member, a guiding groove is recessed on the connecting member, both the guiding groove and the guiding member extend along the axial direction of the first housing, one end of the connecting member is inserted into the first housing through the opening, and the guiding member is inserted into the guiding groove.

15. The radio frequency treatment head according to any one of claims 7 to 14, wherein, Both sides of the first housing are recessed to form a holding groove for an operator to hold the radiofrequency treatment head. And / or, the transverse dimension of the first housing gradually decreases from the end far away from the first needle body to the end close to the first needle body.

16. The radiofrequency treatment head according to claim 7, wherein, The radiofrequency treatment head further includes a second housing sleeved outside the first housing, the second housing is slidably connected to the first housing, and the first housing moves relative to the second housing in a second direction to adjust the lengths of the first needle body and the second needle body of the needle assembly protruding from the second housing.

17. The radiofrequency treatment head according to any one of claims 8 to 14, wherein, The connecting member is slidably connected to the first housing, and the connecting member moves relative to the first housing in a second direction to adjust the lengths of the first needle body and the second needle body of the needle assembly protruding from the first housing.

18. A radiofrequency therapeutic apparatus, wherein, The radiofrequency treatment instrument includes the radiofrequency treatment head according to any one of claims 7 to 17, as well as a cable and a power supply device, and two ends of the cable are electrically connected to the radiofrequency treatment head and the power supply device respectively.

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