A radio frequency heating electrode, a radio frequency instrument and a radio frequency therapeutic instrument

Abstract

The present application relates to a kind of radio frequency heating electrode, radio frequency instrument and radio frequency therapeutic instrument, wherein, radio frequency heating electrode includes outer insulating shell, inner conductive layer and radio frequency cable;The outer insulating shell is hollow shell, and outer insulating shell is provided with wire hole;Inner conductive layer covers the inner wall of outer insulating shell;The radio frequency cable passes through wire hole and extends into outer insulating shell, and is conductively connected with the inner conductive layer;The radio frequency cable is connected with radio frequency instrument mainframe, and radio frequency voltage generated by radio frequency instrument is transmitted to the inner conductive layer;Radio frequency heating electrode is capacitively coupled to the object or object containing polar molecule wrapped the outer wall of outer insulating shell by radio frequency voltage transmitted to the inner conductive layer to generate radio frequency current, to achieve the effect of heating or treating the object or object.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radio frequency heating technology, in particular to a radio frequency heating electrode, a radio frequency instrument and a radio frequency therapeutic instrument. BACKGROUND

[0002] The radio frequency heating electrode of the prior art is a surface conductive metal electrode. For radio frequency medical instruments and animal radio frequency therapeutic instruments, the use of a surface conductive metal electrode for radio frequency treatment in a natural cavity often causes the contact surface between the metal electrode and the cavity wall to be unstable due to the different tightness of the cavity, thereby causing the patient to have a problem of current burns caused by the concentration of radio frequency current during use. For the moisture-proof and heating of bulk food such as grain stores, radio frequency heating is performed on the polar molecule-containing bulk material inside the bulk material accumulation body. If the metal electrode is not in good contact with the surrounding bulk material, it is easy to cause the concentration of radio frequency current, thereby causing uneven heating, and even causing over-temperature or open fire to cause a fire in the case of ionization. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a radio frequency heating electrode, a radio frequency instrument and a radio frequency therapeutic instrument, to solve the problem of current burns caused by the concentration of radio frequency current when the existing radio frequency heating electrode is used for radio frequency treatment, and to solve the problem of uneven heating caused by the concentration of radio frequency current when used for heating or drying objects, and even to cause over-temperature or open fire to cause a fire in the case of ionization.

[0004] To solve the above technical problems, the present application adopts the following technical solutions:

[0005] A radio frequency heating electrode; the radio frequency heating electrode comprises an outer insulating shell, an inner conductive layer and a radio frequency cable; the outer insulating shell is a hollow shell that defines a cavity inside the radio frequency heating electrode, and the inner conductive layer covers the inner wall of the outer insulating shell; a wire passing hole is provided on the outer insulating shell; the radio frequency cable passes through the wire passing hole and extends into the cavity inside the radio frequency heating electrode and the outer insulating shell, and is in conductive connection with the inner conductive layer; the radio frequency heating electrode is connected to a radio frequency instrument main machine through the radio frequency cable to transmit the radio frequency voltage generated by the radio frequency instrument to the inner conductive layer, and the radio frequency voltage on the inner conductive layer is capacitively coupled to the object wrapped by the outer insulating shell through the outer insulating shell to generate a radio frequency current, thereby achieving the effect of heating or treating the object.

[0006] In some embodiments, the inner conductive layer is a metal conductive layer; the inner conductive layer is an electroplated layer formed on the inner wall of the outer insulating shell, or a metal tube provided in the outer insulating shell; the inner conductive layer partially or entirely covers the inner wall of the outer insulating shell.

[0007] In some embodiments, the inner conductive layer is tightly fitted between the inner wall of the covered outer insulating shell; the radio frequency cable is stripped of a conductive core wire inside the radio frequency heating electrode; the conductive core wire is conductively connected with the inner conductive layer.

[0008] In some embodiments, the front part of the radio frequency heating electrode serves as an electrode working section for generating radio frequency heating effect; the shape of the outer insulating shell is as follows: the overall shape of the outer insulating shell is rod-shaped, the front end of the rod-shaped part is a smooth curved surface, the middle and rear parts of the rod-shaped part are closed columnar curved surfaces, and the rear end of the rod-shaped part is provided with the wire passing hole; or, corresponding to the electrode working section, the front part of the outer insulating shell is rod-shaped, the middle part of the outer insulating shell is a larger-sized convex shape to form a limiting part, and the electrode working section is suitable for heating or treating a cavity object; or the shape of the outer insulating shell is one of a sphere, an irregular curved surface, a polyhedron, and a dendritic shape.

[0009] In some embodiments, the inner conductive layer is arranged on the inner wall of the outer insulating shell corresponding to the electrode working section; the outer insulating shell and the radio frequency cable are waterproofly sealed; waterproof sealing treatment is performed at the wire passing hole; the radio frequency heating electrode is hollow inside, and / or the radio frequency heating electrode is filled with a solid material or a liquid material or a mixed material inside; the outer insulating shell is a closed integrated shell or a combined shell structure provided with the wire passing hole.

[0010] In some embodiments, the radio frequency heating electrode is a radio frequency electrode capable of limiting current density; the capacitance reactance of the radio frequency heating electrode is inversely proportional to the area of the object to be heated or treated in contact with the electrode; as the contact area of the outer insulating shell of the radio frequency heating electrode with the object becomes smaller, the capacitance reactance between the inner conductive layer and the object in contact with the outer insulating shell becomes larger in proportion, the radio frequency current coupled to the object in contact with the outer insulating shell by the inner conductive layer becomes smaller in proportion, and the radio frequency current density remains unchanged or changes in a smaller range.

[0011] In some embodiments, the outer insulating shell adopts a hard insulator and / or an elastomer, or a hard insulator combined with an elastomer, or a hard insulator with an elastomer insulating layer covering the surface entirely or partially.

[0012] The present application provides a radio frequency instrument, which comprises a host provided with a radio frequency power supply and a radio frequency power output port, and a radio frequency heating electrode electrically connected with the radio frequency power output port through a radio frequency cable; the inside of the host is provided with a radio frequency power supply and a control circuit board; the radio frequency heating electrode is the radio frequency heating electrode in any of the above embodiments; the front part of the radio frequency heating electrode serves as an electrode working section for generating radio frequency heating effect, and the shape of the electrode working section is suitable for heating a solid, a granular material accumulation body or a fluid composed of a polar material with a hole.

[0013] Further, the radio frequency instrument further comprises a neutral electrode and a connecting wire for returning the radio frequency current to the radio frequency power source.

[0014] The present application also provides a radio frequency treatment instrument, which comprises a host provided with a radio frequency power source and a radio frequency power output port, a radio frequency heating electrode electrically connected to the radio frequency power output port through a radio frequency cable; the host has the radio frequency power source and a control circuit board inside; the radio frequency heating electrode is the radio frequency heating electrode of any of the above embodiments; the radio frequency treatment instrument further comprises a neutral electrode and a connecting wire for returning the radio frequency current to the radio frequency power source; a front part of the radio frequency heating electrode serves as an electrode working section for generating radio frequency heating effect, and the electrode working section is shaped to be suitable for treatment of a cavity.

[0015] The present application has the following advantages:

[0016] The radio frequency heating electrode of the present application is a radio frequency electrode capable of limiting current density. Radio frequency voltage generated by the radio frequency power source is applied to the inner conductive layer through the radio frequency power output port and the radio frequency cable, and the radio frequency voltage on the inner conductive layer is capacitively coupled to an object / subject containing polar molecules wrapped around the outer wall of the outer insulating shell to generate radio frequency current, thereby achieving the effect of heating the object / subject. Meanwhile, since the capacitance value of the capacitor is proportional to the area of the electrode, i.e. the capacitive reactance of the capacitor is inversely proportional to the area of the electrode when the radio frequency is constant, if the area of the outer insulating shell in contact with the object at the electrode becomes smaller, the capacitive reactance between the inner conductive layer and the object / subject in contact with the outer insulating shell becomes larger in proportion, the radio frequency current coupled from the inner conductive layer to the object / subject in contact with the outer insulating shell becomes smaller in proportion, and the radio frequency current density remains almost unchanged, thereby avoiding the problem caused by the concentration of radio frequency current.

[0017] The present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is a structural schematic diagram of a radio frequency instrument according to an embodiment of the present application.

[0019] Figure 2 Fig. 2 is a sectional view of a radio frequency heating electrode capable of limiting current density according to an embodiment of the present application.

[0020] Figure 3 Fig. 3 is a sectional view of a radio frequency heating electrode capable of limiting current density according to another embodiment of the present application.

[0021] Figure 4 Fig. 4 is a sectional view of a radio frequency heating electrode capable of limiting current density according to still another embodiment of the present application. DETAILED DESCRIPTION

[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict, and the present application will be further described in detail in combination with the drawings and specific embodiments.

[0023] With reference to Figures 1-3 The radio frequency heating electrode 10 of the present application has the function of limiting current density, and can be applied to radio frequency heating of objects / subjects containing polar molecules in the interior of the objects / subjects, including the fields of radio frequency medical instruments, animal radio frequency treatment instruments, moisture-proof of bulk food in granaries, heating of bulk food in granaries, etc. Among them, the radio frequency medical instruments and animal radio frequency treatment instruments include radio frequency treatment of non-traumatic superficial tissue inflammation in the natural cavities of the anus and intestines, reproductive organs, ear canals, nasal cavities, etc. of human or animals which are open to the body surface, and radio frequency treatment of non-traumatic superficial tissue inflammation around the natural cavities in the body such as trachea, bronchus and intestinal tract.

[0024] With specific reference to Figure 1 The radio frequency instrument of the embodiment of the present application includes a host 20 provided with a radio frequency power supply and a radio frequency power output port 21, a radio frequency heating electrode 10 capable of limiting current density which is electrically connected to the radio frequency power output port 21 through a radio frequency cable 40, a neutral electrode 30 for returning radio frequency current to the radio frequency power supply and a connecting line 50. The host 20 of the radio frequency instrument is provided with a radio frequency power supply module and a control circuit board, and is connected with a power line for connecting external power supply. The radio frequency power supply, the radio frequency heating electrode 10 and the neutral electrode 30 are electrically connected with the control circuit board.

[0025] The radio frequency voltage generated by the radio frequency power supply in the host is applied to the electrode 10 through the radio frequency power output port 21 and the radio frequency cable 40, specifically to the inner conductive layer 3 in the electrode 10. The radio frequency voltage on the inner conductive layer 3 is capacitively coupled to the object / subject containing polar molecules wrapped around the outer wall of the outer insulating shell 1 to generate radio frequency current, thereby achieving the effect of heating the object / subject. At the same time, since the capacitance value of the capacitor is proportional to the area of the electrode, i.e. the capacitive reactance of the capacitor is inversely proportional to the area of the electrode when the radio frequency is constant. If the area of the outer insulating shell 1 in contact with the object / subject of the electrode becomes smaller, the capacitive reactance between the inner conductive layer 3 and the object / subject to be heated or treated in contact with the outer insulating shell becomes larger in proportion, the radio frequency current coupled to the object / subject in contact with the outer insulating shell 1 of the inner conductive layer 3 becomes smaller in proportion, and the radio frequency current density remains almost unchanged, thereby avoiding the problem caused by the concentration of radio frequency current.

[0026] Specifically, the radio frequency heating electrode 10 capable of limiting current density of the present application embodiment has an internal cavity 11, including an outer insulating shell 1, an inner conductive layer 3 and a radio frequency cable 40. The outer insulating shell 1 is a hollow shell, which defines the internal cavity 11, and the inner wall of the outer insulating shell is covered with the inner conductive layer 3. The outer insulating shell 1 is provided with a wire hole 4. The radio frequency cable 40 passes through the wire hole 4 of the outer insulating shell 1 and extends into the internal cavity 11 of the electrode, and is electrically connected with the inner conductive layer 3 on the inner wall of the outer insulating shell 1. The radio frequency cable 40 is stripped of a conductive core wire 2 inside the radio frequency heating electrode; the conductive core wire 2 is in conductive connection with the inner conductive layer 3. The radio frequency voltage on the inner conductive layer 3 is capacitively coupled to the object / subject wrapped with the outer wall of the outer insulating shell 1 to generate a radio frequency current, thereby achieving the effect of heating the object / subject.

[0027] The inner conductive layer 3 is tightly attached to the inner wall of the outer insulating shell 1; preferably, the inner conductive layer 3 is tightly attached to and covers the inner wall of the outer insulating shell 1. The inner conductive layer 3 covers part or all of the inner wall of the outer insulating shell 1. In some embodiments, the inner conductive layer 3 is a metal conductive layer; the inner conductive layer 3 can be an electroplated layer formed on the inner wall of the outer insulating shell, or a metal tube arranged inside the outer insulating shell.

[0028] The shape of the outer insulating shell 1 can be selected as needed, including but not limited to spheres, polyhedrons, rods, columns, dendritic shapes, etc., which can be correspondingly arranged according to the shape of the object / subject to be heated or treated.

[0029] The outer insulating shell 1 is an integrated shell provided with a radio frequency cable wire hole 4, and an internal cavity 11 is formed. Preferably, the outer insulating shell 1 is a closed integrated shell structure with a wire hole 4, and the radio frequency cable 40 can be further sealed after being inserted into the wire hole 4.

[0030] As an embodiment, referring to Figure 4 , when used for heating in a cavity opening on the surface of a heated solid object / subject, the radio frequency heating electrode 10 capable of limiting current density can be arranged as follows: including an electrode working section 101 (for generating a radio frequency heating effect) at the front, a handle 103 at the back, and a limiting part 102 at the middle connecting part. The electrode working section 101 is a columnar or rod-shaped profile with an arc-shaped front end, the limiting part 102 in the middle is a larger-sized protrusion, and the size of the limiting part 102 is obviously larger than the shape of the normal external size of the cavity opening; the back part can be of any shape. Correspondingly, the inner wall of the electrode working section 101 of the outer insulating shell 1 is provided with an inner conductive layer 3, and the inner wall of the outer insulating shell corresponding to the limiting part 102 and the handle 103 at the back can not be provided with an inner conductive layer 3. The wire hole 4 can be arranged at the end of the handle 103, and the conductive core wire 2 stripped from the radio frequency cable 40 extending into the internal cavity 11 can be welded or fixedly connected together with the inner conductive layer 3 through fasteners, while realizing electrical connection.

[0031] When the front electrode working section 101 is inserted into the cavity, the middle limiting section 102 is blocked by the cavity opening to limit the relative position between the heating section and the cavity opening.

[0032] According to the need, the outer insulating shell 1 can be made of all hard insulators or all elastomers, or part of hard insulators combined with part of elastomers, or the whole can be made of hard insulators, and the surface can be covered with an elastomer insulating layer. The elastomer can be a silicone rubber or a TPU, TPE, etc. elastic insulating material.

[0033] According to the need, the hollow interior of the radio frequency heating electrode 1 can be a cavity 11, or filled with solid or liquid materials or mixed materials.

[0034] According to the need, the outer insulating shell 1 and the radio frequency cable 40 can be waterproof sealed or not waterproof.

[0035] Please refer to Figures 1-2 The radio frequency therapeutic instrument for the cavity of the human or animal body provided by the embodiment one of the present application comprises a host 20 provided with a radio frequency power supply and a radio frequency power output port 21, a radio frequency heating electrode 10 capable of limiting current density electrically connected with the radio frequency power output port 21 through a radio frequency cable 40, a neutral electrode 30 and a connecting line 50 for the return of radio frequency current to the radio frequency power supply, a port 22 provided on the host, the port 22 being electrically connected with the radio frequency power supply in the host. The connecting line 50 is connected between the port 22 and the neutral electrode 30. The radio frequency heating electrode 10 capable of limiting current density comprises an outer insulating shell 1, an inner conductive layer 3 and a radio frequency cable 40. The inner wall of the outer insulating shell is tightly covered with the inner conductive layer 3; the radio frequency cable 40 is stripped of a conductive core wire 2 inside the radio frequency heating electrode; the conductive core wire is electrically connected with the inner conductive layer 3; the radio frequency voltage on the inner conductive layer 3 is capacitively coupled to the object / subject wrapped around the outer wall of the outer insulating shell through the outer insulating shell 1, and a radio frequency current is generated, so as to achieve the effect of heating the object / subject. In this embodiment, the object / subject refers to the cavity of the human or animal body.

[0036] In this embodiment, the inner conductive layer 3 covers all the inner walls of the outer insulating shell.

[0037] The outer insulating shell 1 is in the shape of a rod, the front end of the rod is a spherical surface, the middle part of the rod is a cylindrical body, and the rear end of the rod is a spherical surface with a central opening through which the radio frequency cable passes. The central opening is a wire passing hole 4.

[0038] The interior of the radio frequency heating electrode can be a cavity.

[0039] The outer insulating shell 1 and the radio frequency cable 40 can be waterproof sealed.

[0040] The outer insulation shell 1 is made of hard insulator, and the surface is entirely covered by the elastomer insulation layer; the elastomer is made of silicone rubber insulation material.

[0041] Referring to Figure 1 and 3 The radio frequency therapeutic instrument for human or animal ear canal comprises a host 20 provided with a radio frequency power supply and a radio frequency power output port 21, a radio frequency heating electrode 10 capable of limiting current density electrically connected with the radio frequency power output port 21 through a radio frequency cable 40, a neutral electrode 30 for returning radio frequency current to the radio frequency power supply, and a connecting wire 50. The radio frequency heating electrode 10 capable of limiting current density comprises an outer insulation shell 1, an inner conductive layer 3, and a radio frequency cable 40. The inner wall of the outer insulation shell 1 is tightly covered by the inner conductive layer 3. The radio frequency cable 40 is stripped of a conductive core wire 2 inside the radio frequency heating electrode. The conductive core wire 2 is in conductive connection with the inner conductive layer 3. The radio frequency voltage on the inner conductive layer 3 is capacitively coupled to an object / subject wrapped around the outer wall of the outer insulation shell through the outer insulation shell 1, so as to generate radio frequency current, thereby achieving the effect of heating the object / subject. In the embodiment, the object / subject refers to the human or animal ear canal.

[0042] The inner conductive layer covers part of the inner wall of the outer insulation shell. Specifically, the inner wall of the outer insulation shell corresponding to the front electrode working section 101 is covered by the inner conductive layer 3, and the inner wall of the rear section of the outer insulation shell is not provided with the inner conductive layer.

[0043] The outer insulation shell 1 is in the shape of a rod, the front end of the rod is a spherical surface, the middle part of the rod is a cylinder, and the rear end of the rod is a spherical surface with a central opening through which the radio frequency cable passes. The central opening serves as a wire passing hole 4.

[0044] The inside of the radio frequency heating electrode 10 is a cavity 11.

[0045] The outer insulation shell 1 and the radio frequency cable 40 are waterproof sealed, and the waterproof sealing treatment is performed at the wire passing hole 4.

[0046] The outer insulation shell 1 is made of hard insulator.

[0047] Referring to Figure 1 and 4The radio frequency therapeutic instrument for human or animal genital cavity provided by the embodiment comprises a host 20 provided with a radio frequency power supply and a radio frequency power output port 21, a radio frequency heating electrode 10 capable of limiting current density electrically connected with the radio frequency power output port 21 through a radio frequency cable 40, a neutral electrode 30 and a connecting wire 50 for returning radio frequency current to the radio frequency power supply. The radio frequency heating electrode 10 capable of limiting current density comprises an outer insulating shell 1, an inner conductive layer 3 and the radio frequency cable 40. The inner part of the outer insulating shell 1 forms a cavity 11, and the inner wall is tightly covered with the inner conductive layer 3. The radio frequency cable 40 is stripped of a conductive core wire 2 inside the radio frequency heating electrode 10. The conductive core wire 2 is in conductive connection with the inner conductive layer. The radio frequency voltage on the inner conductive layer 3 is capacitively coupled to an object / subject containing polar molecules wrapped around the outer wall of the outer insulating shell 1 and generates radio frequency current, so as to achieve the effect of heating the object / subject. In the embodiment, the object / subject refers to the human or animal genital cavity.

[0048] The inner conductive layer 3 covers the inner wall of the front part (corresponding to the electrode working section 101) of the outer insulating shell.

[0049] The inside of the radio frequency heating electrode is the cavity 11.

[0050] The outer insulating shell 1 and the radio frequency cable 40 are waterproof sealed, and waterproof sealing treatment is performed at the wire hole 4.

[0051] The outer insulating shell has a shape of rod-shaped 101 and 103 at the front and rear parts, and a convex shape with a larger size at the middle part to form a limiting part 102.

[0052] The outer insulating shell 1 is made of a hard insulator, and the surface of the front part is covered with an elastomer insulating layer; the elastomer is made of TPE insulating material.

[0053] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and all should belong to the scope of the present application; the protection scope of the present application is defined by the appended claims and their equivalent scope.

Claims

1. A radio frequency heating electrode; characterized by: The radio frequency heating electrode comprises an outer insulating shell, an inner conductive layer and a radio frequency cable; the outer insulating shell defines a cavity inside the radio frequency heating electrode, and the inner conductive layer covers the inner wall of the outer insulating shell; the outer insulating shell is provided with a wire passing hole; the radio frequency cable passes through the wire passing hole and extends into the cavity inside the radio frequency heating electrode, and is in conductive connection with the inner conductive layer; The radio frequency heating electrode is connected with a radio frequency instrument main machine through the radio frequency cable to transmit the radio frequency voltage generated by the radio frequency instrument to the inner conductive layer, and the radio frequency voltage on the inner conductive layer is capacitively coupled to the object wrapped by the outer insulating shell to generate a radio frequency current, thereby achieving the effect of heating or treating the object. The inner conductive layer is a metal conductive layer; the inner conductive layer is tightly attached to the inner wall of the outer insulating shell.

2. The radio frequency heating electrode of claim 1, wherein: The inner conductive layer is an electroplated layer formed on the inner wall of the outer insulating shell, or a metal pipe arranged in the outer insulating shell; the inner conductive layer partially or entirely covers the inner wall of the outer insulating shell.

3. The radio frequency heating electrode of claim 1, wherein: The radio frequency cable is stripped of a conductive core wire inside the radio frequency heating electrode; the conductive core wire is in conductive connection with the inner conductive layer.

4. The radio frequency heating electrode of claim 1, wherein: The front part of the radio frequency heating electrode serves as an electrode working section for generating a radio frequency heating effect; the outer insulating shell has a shape of: The overall shape of the outer insulating shell is a rod, the front end of the rod is a smooth curved surface, the middle and rear parts of the rod are closed columnar curved surfaces, and the rear end of the rod is provided with the wire passing hole; or Corresponding to the electrode working section, the front part of the outer insulating shell is a rod, the middle part of the outer insulating shell is a large-size convex shape to form a limiting part, and the electrode working section is suitable for heating or treating a cavity object; or The outer insulating shell has a shape of one of a sphere, an irregular curved surface, a polyhedron and a dendritic shape.

5. The radio frequency heating electrode of claim 4, wherein: The inner conductive layer is arranged on the inner wall of the outer insulating shell corresponding to the electrode working section; The outer insulating shell and the radio frequency cable are waterproof sealed; waterproof sealing treatment is performed at the wire passing hole; The radio frequency heating electrode is a cavity, and / or the radio frequency heating electrode is filled with a solid material or a liquid material or a mixed material; The outer insulating shell is a closed integrated shell or a combined shell structure provided with the wire passing hole.

6. The radio frequency heating electrode according to any one of claims 1 to 5, wherein: The radio frequency heating electrode is a radio frequency electrode capable of limiting current density; the capacitance reactance of the radio frequency heating electrode is inversely proportional to the area of the object to be heated or treated in contact with the electrode; as the contact area of the outer insulating shell of the radio frequency heating electrode with the object becomes smaller, the capacitance reactance between the inner conductive layer and the object in contact with the outer insulating shell becomes larger in proportion, the radio frequency current coupled from the inner conductive layer to the object in contact with the outer insulating shell becomes smaller in proportion, and the radio frequency current density remains unchanged or changes in a small range.

7. The radio frequency heating electrode of claim 1 wherein: The outer insulating shell adopts a hard insulator and / or an elastomer, or a hard insulator combined with an elastomer, or a hard insulator with an elastomer insulating layer covering the surface entirely or partially.

8. A radio frequency instrument comprising a host machine provided with a radio frequency power supply and a radio frequency power output port, a radio frequency heating electrode electrically connected with the radio frequency power output port through a radio frequency cable; the inside of the host machine is provided with the radio frequency power supply and a control circuit board; characterized in that: The radio frequency heating electrode is the radio frequency heating electrode as claimed in any one of claims 1 to 7; the front part of the radio frequency heating electrode serves as an electrode working section for generating radio frequency heating effect, and the shape of the electrode working section is suitable for heating a solid, bulk material accumulation or a fluid containing a hole composed of polar materials.

9. The radio frequency instrument of claim 8, wherein: The radio frequency instrument further comprises a neutral electrode and a connecting line for returning the radio frequency current to the radio frequency power source.

10. A radio frequency therapeutic apparatus, comprising a main machine provided with a radio frequency power supply and a radio frequency power output port, a radio frequency heating electrode electrically connected with the radio frequency power output port through a radio frequency cable; the main machine has the radio frequency power supply and a control circuit board inside; characterized in that: The radio frequency heating electrode is the radio frequency heating electrode as claimed in any one of claims 1 to 7; the radio frequency instrument further comprises a neutral electrode and a connecting line for returning the radio frequency current to the radio frequency power source; and the front part of the radio frequency heating electrode serves as an electrode working section for generating radio frequency heating effect, and the shape of the electrode working section is suitable for treatment of a cavity.

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