Neutral electrode connector and table type radio frequency skin therapeutic apparatus

Abstract

The neutral electrode connector comprises a shell, a cover body, two wiring terminals and two fasteners, the shell forms a first cavity with an opening in the top end, two mounting holes extending in the up-down direction are formed in the first cavity, two through holes penetrating in the front-back direction are formed in the side wall of the shell, and the two through holes penetrate through the cover body in the front-back direction. The cover body is detachably connected to the top end of the shell, a second cavity is formed in the cover body, the first cavity and the second cavity define a wire passing channel for a pipeline to penetrate through, the two wiring terminals penetrate through the two through holes respectively, and the two fasteners penetrate through the inner ends of the two wiring terminals respectively and are installed in the two installation holes. And the inner ends of the two wiring terminals are respectively clamped and fixed. According to the neutral electrode connector and the table type radio frequency skin therapeutic instrument, the wiring terminal can be conveniently assembled, the operation is more convenient, the shell cannot be damaged in the installation process, and in addition, the conduction between the radio frequency line and the neutral electrode is more stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a neutral electrode connector and a desktop radio frequency skin therapeutic device. Background Art

[0002] The neutral electrode of the desktop radio frequency skin therapy device is connected to the return end of the radio frequency line of the pipeline through a connector. The connector includes a shell, a cover and a terminal. The shell and the cover are detachably connected and enclosed to form a wire passage for the pipeline to pass through. The shell is provided with a through hole running through in the front-to-back direction. The inner end of the terminal passes through the through hole and is fastened by a fastening nut. The return end of the radio frequency line is connected to the inner end of the terminal, and the wire of the neutral electrode is connected to the outer end of the terminal. Since the inner cavity of the shell is small in size and the terminal extends roughly in the front-to-back direction of the shell, when the locking nut needs to be turned, the operation is very troublesome, time-consuming and labor-intensive. In the related art, the locking nut is directly welded to the inner end of the terminal. This will make the terminal assembly difficult, cannot be disassembled and has poor reliability. In addition, the shell is easily damaged during welding. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a neutral electrode connector that facilitates quick assembly of the terminal block, is more convenient to operate, does not damage the housing during installation, and furthermore ensures more stable and reliable electrical conduction between the radio frequency line and the neutral electrode.

[0004] The utility model also provides a desktop radio frequency skin treatment device having the neutral electrode connector.

[0005] According to the neutral electrode connector of the first aspect of the present invention, a radio frequency line is used to connect a neutral electrode and a pipeline. The neutral electrode is provided with two connecting wires, and the radio frequency line has two return ends. The neutral electrode connector includes a shell, a cover, two wiring terminals and two fasteners. The shell forms a first cavity with a top opening, and the first cavity is provided with two mounting holes extending in the up and down directions. The side wall of the shell is provided with two through holes extending in the front and back directions. The cover is detachably connected to the top of the shell, and the cover forms a second cavity. The first cavity and the second cavity are combined to form a wire passage for the pipeline to pass through. The two wiring terminals are respectively provided in the two through holes, and the inner ends of the two wiring terminals are respectively used to connect the two return ends, and the outer ends of the two wiring terminals are respectively used to connect the two connecting wires. The two fasteners are respectively provided in the inner ends of the two wiring terminals and installed in the two mounting holes to clamp and fix the inner ends of the two wiring terminals respectively.

[0006] The neutral electrode connector according to the embodiment of the present invention has at least the following beneficial effects:

[0007] Since the mounting hole extends in the up-down direction, the axial direction of the fastener is roughly toward the opening at the top of the shell, so that it is convenient for the staff to operate a screwdriver or other tools to install the fastener at the opening at the top of the shell. At the same time, the through hole penetrates in the front-to-back direction, so that the terminal extends in the front-to-back direction accordingly, thereby facilitating the fastener to be passed through the inner end of the terminal, making the assembly of the terminal more convenient, and no welding construction is required during the installation process, so as not to damage the shell. In addition, two terminal blocks are provided. Even if one of them is unstable in connection with the return end of the RF line or the connecting wire of the neutral electrode, it can still be normally conductive through the other terminal, thereby making the conductivity between the RF line and the neutral electrode more stable and reliable.

[0008] According to some embodiments of the present invention, the fastener is configured as a screw, and the mounting hole is configured as a threaded hole.

[0009] According to some embodiments of the present invention, the shell is provided with two hot melt nuts, and the threaded holes of the hot melt nuts form the mounting holes.

[0010] According to some embodiments of the present invention, the return end is provided with a connecting ring, and the fastener is used to pass through the connecting ring to clamp and fix the connecting ring.

[0011] According to some embodiments of the present invention, a first buckle is provided at the outer end of the wiring terminal, and a second buckle is provided at the end of the connecting wire, and the first buckle is used to be buckled with the second buckle.

[0012] According to some embodiments of the present invention, the wiring terminal includes a wiring piece, and the wiring piece is provided with a connection hole penetrating along the thickness direction of the wiring piece, and the fastener is passed through the connection hole.

[0013] According to some embodiments of the present invention, the through hole includes a countersunk section and a plug-in section, the countersunk section is arranged on the outer surface of the shell, the plug-in section is arranged on the inner end surface of the countersunk section, the wiring piece is fitted through the plug-in section, and the wiring terminal also includes a sealing portion, the sealing portion is connected to the wiring piece, and the sealing portion is fitted and inserted into the countersunk section.

[0014] According to some embodiments of the present invention, a plurality of first protrusions are provided in the first cavity; and / or a plurality of second protrusions are provided in the second cavity; wherein the first protrusions and the second protrusions are used to abut against the outer surface of the pipeline.

[0015] According to some embodiments of the present invention, a first connecting portion is provided in the first cavity, and a second connecting portion is correspondingly provided in the second cavity. The first connecting portion and the second connecting portion are detachably connected, and the two mounting holes are respectively located on both sides of the first connecting portion.

[0016] According to the second embodiment of the present invention, the desktop radio frequency skin treatment device includes the neutral electrode connector described in the first embodiment.

[0017] Additional aspects and advantages of the present invention will be partially given in the following description, and some of the additional aspects and advantages will become apparent from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is an exploded schematic diagram of a neutral electrode connector according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the middle cover body;

[0021] Figure 3 This is a schematic diagram of the connection between the neutral electrode connector and the pipeline;

[0022] Figure 4 Schematic diagram of the neutral electrode connector, pipeline and neutral electrode;

[0023] Figure 5 This is a structural schematic diagram of a desktop radiofrequency skin therapy device according to an embodiment of the present invention.

[0024] Figure Number:

[0025] Neutral electrode connector 10;

[0026] Neutral electrode 20;

[0027] Pipeline 30;

[0028] Device body 40;

[0029] Radio frequency handle 50;

[0030] Housing 100; first cavity 101; mounting hole 102; through hole 103; hot melt nut 104; countersunk section 105; socket section 106; first protrusion 107; first connecting portion 108;

[0031] Cover 200; second cavity 201; second protrusion 202; second connecting portion 203;

[0032] Terminal block 300; first buckle 301; terminal piece 302; connection hole 303; blocking portion 304;

[0033] Fastener 400;

[0034] Connecting wire 500; second buckle 501;

[0035] Return end 600; connecting ring 601. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] Reference below Figures 1 to 5 The neutral electrode connector and the desktop radio frequency skin treatment device according to the embodiments of the present invention are described.

[0038] refer to Figures 3 to 5 As shown, the neutral electrode connector 10 according to the embodiment of the first aspect of the present invention is applied to a desktop radio frequency skin therapy device. The desktop radio frequency skin therapy device includes a device body 40. The device body 40 can be connected to a pipeline 30. The end of the pipeline 30 can be connected to a radio frequency handle 50. The pipeline 30 can include a sleeve and a radio frequency wire, a water pipe, etc. arranged in the sleeve. The radio frequency wire has a radio frequency end and two return ends 600. The radio frequency end of the radio frequency wire is connected to the radio frequency electrode on the radio frequency handle 50. The neutral electrode connector 10 of the present invention is used to connect the two connecting wires 500 of the neutral electrode 20 to the two return ends 600 of the radio frequency wire respectively.

[0039] When performing skin treatment, the RF electrode on the RF handle 50 can contact the skin of the treatment area of ​​the human body, and the neutral electrode 20 can be attached to the skin of other areas of the human body, such as the skin on the back of the neck of the human body. The RF current generated by the RF electrode enters the human skin, and then returns to the return end 600 of the RF line through the neutral electrode 20 to form a closed loop. When the RF current enters the human skin, it will act on the human tissue and produce a thermal effect, thereby playing a cosmetic treatment effect, so as to achieve the effect of treating skin sagging, reducing skin wrinkles, and tightening the skin. The neutral electrode 20 can be set to a sheet structure with a larger contact surface with the human skin, so that when the RF current enters the neutral electrode 20 from the human body, it can avoid the RF current being too concentrated, causing discomfort or even burns to the skin.

[0040] refer to Figures 1 to 4As shown, the neutral electrode connector 10 includes a housing 100 , a cover 200 , two connection terminals 300 and two fasteners 400 .

[0041] The housing 100 is formed with a first cavity 101, which is open at the top. Two mounting holes 102 extending in the vertical direction are provided in the first cavity 101. For example, two mounting portions may be provided at the bottom of the first cavity 101, and the two mounting holes 102 may be provided in the two mounting portions, respectively. The extending direction of the mounting holes 102 may be perpendicular to the plane of the opening area at the top of the housing 100. The side wall of the housing 100 is provided with two through holes 103 extending in the front-to-back direction. For example, the two through holes 103 may both be provided in the front wall of the housing 100, or both be provided in the rear wall of the housing 100. The through holes 103 connect the first cavity 101 with the outside of the housing 100, and the penetration direction of the through holes 103 may be parallel to the plane of the opening area at the top of the housing 100.

[0042] The cover body 200 is detachably connected to the top of the shell 100, for example, it can be connected by bolt connection, clamping or other suitable methods. The cover body 200 covers the opening area at the top of the shell 100, and the cover body 200 forms a second cavity 201. The first cavity 101 of the shell 100 and the second cavity 201 of the cover body 200 are enclosed to form a wire passage for the pipeline 30 to pass through.

[0043] The two terminals 300 are respectively inserted into the two through-holes 103. The inner ends of the two terminals 300, that is, the ends of the two terminals 300 located within the first cavity 101, are respectively used to connect to the two return terminals 600. The inner ends of the terminals 300 can be provided with connection holes 303 or connection grooves. The outer ends of the two terminals 300, that is, the ends of the two terminals 300 located outside the housing 100, are respectively used to connect to the two connecting wires 500. The terminals 300 are made of a conductive material, preferably bare copper.

[0044] The two fasteners 400 are respectively inserted through the connection holes 303 or connection grooves at the inner ends of the two terminal blocks 300 and are respectively installed in the two mounting holes 102 to cooperate with the housing 100 to clamp and secure the inner ends of the two terminal blocks 300. Because the mounting holes 102 extend in the vertical direction, the fasteners 400 installed in the mounting holes 102 also extend generally in the vertical direction, so that the axial direction of the fasteners 400 is generally toward the opening at the top end of the housing 100.

[0045] An incision is provided on the sleeve of the pipeline 30, the return end 600 of the RF line is passed through the incision and pulled out of the sleeve, the two terminal blocks 300 are respectively inserted into the two through holes 103, and then the two fasteners 400 are respectively inserted into the inner ends of the two terminal blocks 300 and installed in the two mounting holes 102. The two fasteners 400 can cooperate with the shell 100 to clamp and fix the inner ends of the two terminal blocks 300 respectively. Then, the two return ends 600 of the RF line of the pipeline 30 are respectively connected to the inner ends of the two terminal blocks 300, and the two connecting wires 500 connected to the neutral electrode 20 are respectively connected to the outer ends of the two terminal blocks 300. Finally, the shell 100 is connected to the cover 200.

[0046] According to the neutral electrode connector 10 of the embodiment of the present invention, since the mounting hole 102 extends in the up-down direction, the axial direction of the fastener 400 is roughly toward the opening at the top of the shell 100. This makes it convenient for the staff to operate a screwdriver or other tools to install the fastener 400 at the opening at the top of the shell 100. At the same time, the through hole 103 penetrates in the front-to-back direction, so that the terminal 300 extends in the front-to-back direction accordingly, thereby facilitating the fastener 400 to pass through the inner end of the terminal 300, thereby making the assembly of the terminal 300 more convenient, and no welding construction is required during the installation process, thereby not damaging the shell 100. In addition, two terminals 300 are provided. Even if one of them is unstable in connection with the return end 600 of the RF line or the connecting wire 500 of the neutral electrode 20, it can still be normally conductive through the other terminal 300, thereby making the conductivity between the RF line and the neutral electrode 20 more stable and reliable.

[0047] It should be noted that the descriptions of up and down, front and back, left and right, etc. involving orientation or position relationships mentioned in the present invention are based on the orientation or position relationships shown in the accompanying drawings, and are only for the convenience of describing the contents of the present invention, and do not indicate or imply that the corresponding components must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0048] refer to Figure 1 As shown, in some embodiments of the present invention, the fastener 400 is configured as a screw, and the mounting hole 102 is configured as a threaded hole. In this embodiment, when it is necessary to secure the inner end of the terminal block 300, the screw portion of the fastener 400 is inserted through the inner end of the terminal block 300 and threadedly connected to the threaded mounting hole 102. The head of the fastener 400 and the housing 100 can then cooperate to clamp the inner end of the terminal block 300. This not only simplifies the structure and facilitates operation, but also provides a more secure clamping and fixing of the terminal block 300.

[0049] It should be noted that in some other embodiments of the present invention, the fastener 400 may also be other structures, for example, it may also be a bolt. In this case, the mounting hole 102 does not need to be set as a threaded hole, but only needs to be passed through at both ends. The bolt is sequentially passed through the inner end of the terminal block 300 and the mounting hole 102 and then the nut is installed.

[0050] refer to Figure 1 As shown, in some embodiments of the present invention, the housing 100 is provided with two hot-melt nuts 104, and the threaded holes of the hot-melt nuts 104 form the mounting holes 102. For example, the housing 100 and the two hot-melt nuts 104 can be integrally formed using a plastic injection molding process. Compared to directly machining the mounting holes 102 in the form of spiral holes on the housing 100, in this embodiment, the mounting holes 102 are formed by the hot-melt nuts 104 made of a metal material. This is not only convenient to manufacture, but also reduces wear on the internal threads of the mounting holes 102 during long-term use, thereby extending the service life.

[0051] It should be noted that, in some other embodiments of the present invention, the mounting hole 102 may also be directly processed on the housing 100 , which will not be described in detail here.

[0052] refer to Figure 4 As shown, in some embodiments of the present invention, the return end 600 is provided with a connecting ring 601, and the fastener 400 is used to pass through the connecting ring 601 to clamp and fix the connecting ring 601. In this embodiment, when the fastener 400 passes through the inner end of the terminal block 300 and is installed in the mounting hole 102, the fastener 400 is also passed through the connecting ring 601. The connecting ring 601 is clamped between the terminal block 300 and the head of the fastener 400 or between the terminal block 300 and the housing 100. In this way, the electrical connection between the return end 600 of the RF line and the terminal block 300 can be achieved, which is simple and convenient to operate and the connection is more stable.

[0053] Of course, in some other embodiments of the present invention, the return end 600 may also be connected to the inner end of the connection terminal 300 in other ways. For example, the return end 600 may also be snap-fitted to the inner end of the connection terminal 300 .

[0054] refer to Figure 1 and Figure 4 As shown, in some embodiments of the present invention, a first buckle 301 is provided at the outer end of the connection terminal 300, and a second buckle 501 is provided at the end of the connecting wire 500, where the first buckle 301 is used to engage with the second buckle 501. In this embodiment, the first buckle 301 is provided at the outer end of the connection terminal 300, and the connection terminal 300 can be connected to the connecting wire 500 of the neutral electrode 20 by mutually engaging the first buckle 301 and the second buckle 501, which is simple and convenient to operate, saving time and effort.

[0055] Of course, in some other embodiments of the present invention, the outer end of the terminal block 300 may also be connected to the connecting wire 500 of the neutral electrode 20 in other ways, for example, it may also be magnetically attracted to the connecting wire 500 of the neutral electrode 20 .

[0056] refer to Figure 1 and Figure 4 As shown, in some embodiments of the present invention, the terminal block 300 includes a terminal block 302, which is provided with a connection hole 303 extending through the terminal block 302 along its thickness, and a fastener 400 is provided through the connection hole 303. After the fastener 400 is provided through the connection hole 303 of the terminal block 302, it is installed in the mounting hole 102. This makes the installation of the terminal block 300 more stable. In addition, the connection hole 303 extends through the thickness of the terminal block 302. When the terminal block 302 and the connecting ring 601 of the return end 600 are clamped between the head of the fastener 400 and the housing 100, the end surface of the terminal block 302 in the thickness direction is affixed to the connecting ring 601 of the return end 600. In this way, the contact between the terminal block 300 and the return end 600 of the RF line is closer, and the conductive stability is improved.

[0057] It should be noted that, in some other embodiments of the present invention, a connection groove may also be provided on the terminal piece 302 , and the fastener 400 may be passed through the connection groove.

[0058] refer to Figure 1 As shown, in some embodiments of the present invention, through-hole 103 includes a countersunk section 105 and a receptacle section 106. Countersunk section 105 is disposed on the outer surface of housing 100, and receptacle section 106 is disposed on the inner end surface of countersunk section 105. Terminal lug 302 is inserted through receptacle section 106. Terminal 300 also includes a blocking portion 304 connected to terminal lug 302 and inserted into countersunk section 105. In this embodiment, after terminal lug 302 of terminal 300 is inserted into receptacle section 106, blocking portion 304 of terminal 300 is inserted into countersunk section 105, thereby blocking receptacle section 106 and preventing external water and dust from entering the connector. Furthermore, the wall of countersunk section 105 can be generally circular or have other shapes.

[0059] refer to Figure 1 、 Figure 2 and Figure 4As shown, in some embodiments of the present invention, a plurality of first protrusions 107 are provided in the first cavity 101, and a plurality of second protrusions 202 are provided in the second cavity 201, wherein the first protrusions 107 and the second protrusions 202 are used to abut against the outer surface of the pipe 30. For example, multiple groups of first protrusions 107 can be provided in the first cavity 101, and the multiple groups of first protrusions 107 can be arranged in the left-right direction, and each group can include one or more first protrusions 107; multiple groups of second protrusions 202 can be provided in the second cavity 201, and the multiple groups of second protrusions 202 can be arranged in the left-right direction, and each group can include one or more second protrusions 202.

[0060] When the shell 100 is connected to the cover 200 and the pipeline 30 is passed through, the multiple first protrusions 107 can abut the outer surface of one side of the sleeve of the pipeline 30, and the multiple second protrusions 202 can abut the outer surface of the other side of the sleeve of the pipeline 30. Through the friction between the first protrusions 107 and the sleeve, and the friction between the second protrusions 202 and the sleeve, the random rotation of the connector along the circumferential direction of the pipeline 30 can be reduced, and the random sliding of the connector along the length direction of the pipeline 30 can be reduced. Moreover, when the sleeve is a bellows, the first protrusion 107 and the second protrusion 202 can also be located between the two corrugations of the bellows. In this way, through the cooperation between the corrugations of the bellows and the first protrusion 107 or the second protrusion 202, the random sliding of the connector along the length direction of the pipeline 30 can be further prevented.

[0061] It should be noted that, in some other embodiments of the present invention, the plurality of first protrusions 107 may be provided only in the first cavity 101 , or the plurality of second protrusions 202 may be provided only in the second cavity 201 .

[0062] refer to Figure 1 and Figure 2 As shown, in some embodiments of the present invention, a first connection portion 108 is provided in the first cavity 101, and a second connection portion 203 is correspondingly provided in the second cavity 201. The first connection portion 108 and the second connection portion 203 are detachably connected, and two mounting holes 102 are respectively located on either side of the first connection portion 108. For example, two first connection portions 108 can be provided and arranged in the front-to-back direction in the first cavity 101, and two second connection portions 203 can be provided and arranged in the front-to-back direction in the second cavity 201. The two second connection portions 203 can correspond one-to-one with the two first connection portions 108. The first connection portion 108 and the corresponding second connection portions 203 can be connected by bolts or clamping. In this way, the connection between the housing 100 and the cover 200 is more convenient and stable. The two mounting holes 102 can be respectively located on either side of the first connection portion 108 on the front side of the housing 100, with the mounting holes 102 close to the first connection portion 108, making the structure more compact and reliable.

[0063] The desktop radio frequency skin treatment device according to the second embodiment of the present invention includes the neutral electrode connector 10 of the first embodiment.

[0064] For example, reference Figure 5 As shown, the desktop radio frequency skin therapy device can also include a device body 40, the device body 40 is connected to a pipeline 30, the end of the pipeline 30 is connected to a radio frequency handle 50, the pipeline 30 includes a sleeve and a radio frequency wire, a water pipe, etc. arranged in the sleeve, the radio frequency wire has a radio frequency end and two return ends 600, the radio frequency end of the radio frequency wire is connected to the radio frequency electrode on the radio frequency handle 50, the neutral electrode connector 10 of the first aspect embodiment of the present utility model is sleeved outside the sleeve of the pipeline 30, and is used to connect the two connecting wires 500 of the neutral electrode 20 to the two return ends 600 of the radio frequency wire respectively.

[0065] According to the desktop radio frequency skin therapy device of the embodiment of the present invention, by adopting the neutral electrode connector 10 of the embodiment of the first aspect of the present invention, not only the assembly of the terminal block 300 is made more convenient, but also no welding construction is required during the installation process, thereby not damaging the shell 100. In addition, two terminal blocks 300 are provided. Even if one of them has an unstable connection with the return end 600 of the radio frequency line or the connecting wire 500 of the neutral electrode 20, it can still be normally conductive through the other terminal block 300, thereby making the conductivity between the radio frequency line and the neutral electrode 20 more stable and reliable.

[0066] It should be noted that since the desktop radio frequency skin therapy device can adopt all the technical solutions of the neutral electrode connector 10 of the above-mentioned first embodiment, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned first embodiment. These additional beneficial effects will not be repeated here.

[0067] It is understandable that other structures and operations of the desktop radio frequency skin treatment device according to the embodiment of the present invention are known to ordinary technicians in this field and will not be described in detail here.

[0068] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A neutral electrode connector for connecting a neutral electrode and a radio frequency line of a pipeline, wherein the neutral electrode is provided with two connecting wires and the radio frequency line has two return ends, characterized in that: include: The housing is formed with a first cavity with an open top, the first cavity is provided with two mounting holes extending in the vertical direction, and the side wall of the housing is provided with two through holes penetrating in the front-to-back direction; a cover body detachably connected to the top end of the shell, the cover body forming a second cavity, the first cavity and the second cavity enclosing to form a wire passage for the pipeline to pass through; Two wiring terminals are respectively provided in the two through holes, wherein the inner ends of the two wiring terminals are respectively used to connect to the two return ends, and the outer ends of the two wiring terminals are respectively used to connect to the two connecting wires; Two fasteners are respectively passed through the inner ends of the two wiring terminals and installed in the two mounting holes to respectively clamp and fix the inner ends of the two wiring terminals.

2. The neutral electrode connector according to claim 1, characterized in that: The fastener is configured as a screw, and the mounting hole is configured as a threaded hole.

3. The neutral electrode connector according to claim 2, characterized in that: The shell is provided with two hot melt nuts, and the threaded holes of the hot melt nuts form the mounting holes.

4. The neutral electrode connector according to any one of claims 1 to 3, characterized in that: The return end is provided with a connecting ring, and the fastener is used to pass through the connecting ring to clamp and fix the connecting ring.

5. The neutral electrode connector according to any one of claims 1 to 3, characterized in that: The outer end of the wiring terminal is provided with a first buckle, and the end of the connecting wire is provided with a second buckle, and the first buckle is used to be buckled with the second buckle.

6. The neutral electrode connector according to any one of claims 1 to 3, characterized in that: The wiring terminal comprises: The connecting piece is provided with a connecting hole penetrating along the thickness direction of the connecting piece, and the fastener is passed through the connecting hole.

7. The neutral electrode connector according to claim 6, characterized in that: The through hole includes a countersunk section and a socket section, the countersunk section is provided on the outer surface of the housing, the socket section is provided on the inner end surface of the countersunk section, the wiring piece is fitted and passed through the socket section, and the wiring terminal further includes: The blocking portion is connected to the wiring piece, and the blocking portion is inserted into the countersunk hole section.

8. The neutral electrode connector according to any one of claims 1 to 3, characterized in that: A plurality of first convex portions are provided in the first cavity; and / or a plurality of second convex portions are provided in the second cavity; The first convex portion and the second convex portion are used to abut against the outer surface of the pipeline.

9. The neutral electrode connector according to any one of claims 1 to 3, characterized in that: A first connecting portion is provided in the first cavity, and a second connecting portion is correspondingly provided in the second cavity. The first connecting portion and the second connecting portion are detachably connected, and the two mounting holes are respectively located on both sides of the first connecting portion.

10. A desktop radiofrequency skin treatment device, characterized in that: Comprising the neutral electrode connector according to any one of claims 1 to 9.

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