Radio frequency ablation electrode

Abstract

The utility model relates to a radiofrequency ablation electrode, and belongs to the technical field of medical instruments. The radiofrequency ablation electrode comprises a connecting assembly, a handle assembly, an electrode stem assembly and an electrode tip which are arranged in sequence, the electrode tip comprises a supporting body, an electrode base and two electrode bodies with opposite polarities, the electrode base is embedded in the supporting body, each electrode body comprises a connecting piece and a plurality of electrode single bodies which are integrally formed, the two electrode bodies and the electrode base are integrally formed in an injection molding mode, and the electrode single bodies of the two electrode bodies and the electrode base are alternately distributed. According to the radiofrequency ablation electrode, the electrode bodies are integrally formed, the two electrode bodies and the electrode base are integrally formed in an injection molding mode, the connecting wires only need to be welded to any positions of the electrode bodies, electric conduction of the multiple electrode single bodies can be achieved, the problem of line crossing cannot occur, and the radiofrequency ablation electrode is easy and convenient to assemble and high in efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a radiofrequency ablation electrode. BACKGROUND

[0002] Four main symptoms of allergic rhinitis are sneezing, runny nose, nasal itching and nasal congestion. The usual treatment for rhinitis is drug therapy and surgical treatment. The traditional surgical method is sphenoid nerve cut, which cuts off the only parasympathetic nerve fiber that controls the secretion of the lacrimal gland during the operation, and the postoperative dry eye symptoms are obvious. Moreover, the sphenoid canal is hidden, the sphenoid nerve cut operation is difficult, has many complications, and the long-term efficacy is uncertain. Clinical research has found that cutting off the posterior nasal nerve causes the loss of the main sensory nerve and parasympathetic nerve of the inferior turbinate, significantly reduces the secretion of the middle and inferior turbinate mucosa, and significantly reduces the sensitivity of the mucosa, which can persistently alleviate the main clinical symptoms of allergic rhinitis and reduce complications. However, the traditional method of this operation still has problems such as large surgical trauma, more bleeding during the operation, and difficulty for clinicians to master.

[0003] Therefore, a radiofrequency ablation electrode for treating rhinitis has emerged as the times require. The radiofrequency ablation electrode can ablate and stop bleeding by radiofrequency energy. The radiofrequency ablation electrode usually includes a support body, an electrode seat and a plurality of electrode pieces. The electrode pieces are distributed on the electrode seat, and the plurality of electrode pieces are respectively welded with connecting wires to form a positive and negative electrode circuit. The wires with different polarities will cross each other. Because the size of the electrode head is very small, the welding of the electrode body and the connecting wire is difficult, and poor welding is easy to occur. Please refer to the invention patent application with the application number 2023103023767 and the invention name "a rhinitis treatment instrument and a production method". By adding a PCB board, the PCB board is printed with a circuit, and the plurality of electrode bodies are directly connected with the PCB board, so as to avoid welding of the electrode body and the wire. However, the production and assembly efficiency of this structure is still low. UTILITY MODEL CONTENTS

[0004] In view of this, the purpose of the utility model is to provide a radiofrequency ablation electrode. The electrode body is integrally formed, and the two electrode bodies are integrally injection molded with the electrode seat. The connecting wire only needs to be welded with any position of the electrode body to realize the electrical conduction of the plurality of electrode monomers. The problem of wire crossing does not occur, and the assembly is simple and efficient.

[0005] The technical scheme of the utility model is as follows:

[0006] The utility model provides a kind of radiofrequency ablation electrode, including sequentially arranged connecting assembly, handle assembly, electrode stem assembly and electrode head;The electrode head includes support body, electrode seat and two polarity opposite electrode bodies, the electrode seat is embedded in the support body, and the electrode body includes integrally-formed connecting piece and several electrode monomers, two the electrode body is integrally injection molded with the electrode seat, and the electrode monomer of two The electrode monomer is alternately distributed.

[0007] As an option, all the electrode monomers are divided into two electrode rows, and the electrode rows are distributed in the front-back direction.

[0008] As an option, the polarity of any two adjacent electrode monomers and / or any two opposite electrode monomers is opposite.

[0009] As an option, the electrode monomer is perpendicular to the connecting piece.

[0010] As an option, the active end of the electrode monomer is exposed from one side of the electrode seat and inclined towards the outside.

[0011] As an option, the active end of the several electrode monomers forms an electrode plane, which is arranged at an angle with the front end center line of the electrode stem assembly, and the angle between the two is an acute angle.

[0012] As an option, the electrode head further includes a temperature control assembly, which is embedded in the electrode seat and exposed between the several electrode monomers.

[0013] As an option, the temperature control assembly is integrally injection molded with the electrode body.

[0014] As an option, the electrode stem assembly is pre-bent.

[0015] As an option, the electrode stem assembly includes a reinforcing section and a plastic section, and the bending angle of the plastic section is adjustable.

[0016] The utility model has the beneficial effects that:

[0017] The radiofrequency ablation electrode provided by the utility model is integrally formed with the electrode body, and the two electrode bodies are integrally injection molded with the electrode seat. The connecting line only needs to be welded at any position of the electrode body to realize the electrical conduction of multiple electrode monomers, without the problem of line crossing. The assembly is simple and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor. Through the drawings shown, the above and other purposes, features and advantages of the present application will be clearer. In all the drawings, the same reference signs indicate the same parts. The drawings are not necessarily drawn in proportion to the actual size, and the emphasis is on showing the main points of the present application.

[0019] Figure 1 Structure diagram of the radio frequency ablation electrode provided in the first embodiment of the present application Figure 1

[0020] Figure 2 Structure diagram of the radio frequency ablation electrode provided in the first embodiment of the present application Figure 2

[0021] Figure 3 Structure diagram of the radio frequency ablation electrode provided in the first embodiment of the present application Figure 3

[0022] Figure 4 Structure diagram of the front end of the radio frequency ablation electrode provided in the first embodiment of the present application Figure 1

[0023] Figure 2 Structure diagram of the front end of the radio frequency ablation electrode provided in the first embodiment of the present application Figure 6

[0024] Figure 3 Structure diagram of the front end of the radio frequency ablation electrode provided in the first embodiment of the present application Figure 7

[0025] Figure 4 Structure diagram of the front end of the radio frequency ablation electrode provided in the first embodiment of the present application Figure 8

[0026] Figure 9 Front end partial sectional view of the radio frequency ablation electrode provided in the first embodiment of the present application

[0027] Figure 10 Front end partial exploded view of the radio frequency ablation electrode provided in the first embodiment of the present application

[0028] Figure 11 Structure diagram of the electrode body of the radio frequency ablation electrode provided in the first embodiment of the present application

[0029] ​​​​​​​Figure 12 This is a schematic diagram showing the fit between the electrode body and the electrode holder of the radiofrequency ablation electrode provided in Embodiment 1 of this utility model.

[0030] Figure 13 A schematic diagram of the electric field distribution of the radiofrequency ablation electrode provided in Embodiment 1 of this utility model;

[0031] Figure 14 A reference diagram showing the usage status of the radiofrequency ablation electrode provided in Embodiment 1 of this utility model;

[0032] Figure 15 This is a schematic diagram of the structure of the radiofrequency ablation electrode provided in Embodiment 2 of this utility model;

[0033] Figure 16 This is a schematic diagram showing the fit between the electrode rod assembly and the electrode head of the radiofrequency ablation electrode provided in Embodiment 2 of this utility model;

[0034] Figures 1-3 This is a reference diagram showing the usage status of the radiofrequency ablation electrode provided in Embodiment 2 of this utility model.

[0035] Icons: 100-Radiofrequency ablation electrode; 10-Connecting assembly; 20-Handle assembly; 30-Electrode rod assembly; 40-Electrode head; 31-Reinforcing section; 32-Moldable section; 41-Support body; 42-Electrode seat; 43-Electrode body; 44-Temperature control assembly; 410-Connecting part; 430-Connector; 431-Electrode unit. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0040] Example 1:

[0041] Please refer to Figures 4-9 As shown, an embodiment of the present invention provides a radiofrequency ablation electrode 100, which is used for ablation and hemostasis in rhinitis surgery.

[0042] First, it should be noted that in this embodiment, "front" and "back" are determined by their positional relationship with the lesion site; the part closer to the lesion site is considered "front," and the part farther from the lesion site is considered "back."

[0043] The radiofrequency ablation electrode 100 mainly consists of a connecting component 10, a handle component 20, an electrode rod component 30, and an electrode head 40, which are connected in sequence.

[0044] The structures of the connecting component 10, the handle component 20, and the electrode rod component 30 can all refer to existing technologies. The connecting component 10 is used to connect to the main unit, the handle component 20 is used for medical personnel to hold, and the electrode rod component 30 is used to connect the handle component 20 and the electrode head 40. The front end of the electrode rod component 30 is connected to the electrode head 40, and the connection method is not limited. For example, the front end of the electrode rod component 30 is inserted into the electrode head 40, or the front end of the electrode rod component 30 is bonded to the rear end of the electrode head 40, etc. The rear end of the electrode rod component 30 is connected to the handle component 20, and the connection method is not limited. For example, it can be inserted, snapped, or bonded, thereby providing support for the electrode head 40. The radio frequency output connection cable, etc., passes through its interior and is connected to the temperature-controlled radio frequency ablation system through the connecting component 10.

[0045] The material of the electrode rod assembly 30 is not limited; it can be a metallic material such as stainless steel, or a non-metallic material such as plastic. In this embodiment, the electrode rod assembly 30 can be a straight rod.

[0046] Please combine Figure 12 As shown, the electrode head 40 mainly consists of a support 41, an electrode base 42, and two electrode bodies 43. The two electrode bodies 43 can contact human tissues such as the nasal turbinate mucosa and can independently form a current circuit or work together to form a current circuit (please refer to...). Figures 8-11 As shown in the figure, it outputs radio frequency energy, thereby ablating the nasal mucosa and the posterior inferior nasal nerve. The following is a detailed discussion of the various components of the electrode head 40.

[0047] The shape and structure of the support 41 are not limited and can be referenced from the prior art. In this embodiment, the support 41 has a receiving cavity with an opening on one side. The material of the support 41 is not limited. Generally speaking, the support 41 needs to be made of insulating material, such as ceramic, ABS, etc.

[0048] The dimensions and size of the support 41 can be set as needed. In this embodiment, the width and / or length of the support 41 can gradually decrease in the direction from back to front. That is, the width of the support 41 gradually decreases, or the length of the support 41 gradually decreases, or the width and length of the support 41 decrease simultaneously, etc. This decrease can be linear or non-linear, as long as it ensures that the cross-sectional area of ​​the front half of the support 41 is smaller than the cross-sectional area of ​​the rear half of the support 41.

[0049] In other embodiments, the support body 41 may be a solid structure, but it may be provided with through holes or wire grooves for wiring; it is also permissible for the front and rear cross-sectional areas of the support body 41 to be equal or substantially equal, or for the front to be larger than the rear.

[0050] The support 41 can be manufactured by injection molding, sintering, turning or other processing methods. The support 41 can be an integral structure or a split structure.

[0051] The electrode holder 42 is embedded in the support body 41. A portion of the electrode holder 42 extends into the receiving cavity of the support body 41, with one side exposed. The exposed surface of the electrode holder 42 can be flush with the side of the support body 41, protrude from the side of the support body 41, or be lower than the side of the support body 41. The structure of the electrode holder 42 can be designed as needed, such as a rectangular block shape, a stepped shape, etc. Specific structures can refer to existing technologies. In this embodiment, a step can be provided at the side opening of the support body 41, and the electrode holder 42 can be embedded in the step. Of course, the support body 41 can also be without a step.

[0052] The electrode holder 42 is made of insulating material, such as ceramic or ABS. The connection method between the electrode holder 42 and the support 41 is not limited, such as bonding, snap-fitting, or fastening.

[0053] The electrode holder 42 can be manufactured in any way, such as by stamping or turning. In this embodiment, the electrode holder 42 is manufactured by injection molding.

[0054] Please combine Figure 10 As shown, two electrode bodies 43 are distributed on the electrode base 42, with a portion of the electrode body 43 embedded in the electrode base 42 and a portion of the electrode body 43 exposed from one side of the electrode base 42. Of course, it is also possible for the electrode body 43 to be exposed from both sides of the electrode base 42.

[0055] The two electrodes 43 have opposite polarities, with one electrode 43 being the positive electrode and the other electrode 43 being the negative electrode, forming a complete circuit.

[0056] Because the nasal cavity has a small space, the overall radial cross-sectional dimension of the electrode head 40 is small, generally within 5mm. That is, the front end of the electrode head 40 can be covered by a circle with a diameter of less than or equal to 5mm. If the positive electrode unit 431 and the negative electrode unit 431 are set independently, other structures are required to weld or electrically connect the electrode heads 40 of the same polarity. Due to the small size of each component, this is difficult to operate in actual production and the welding reliability is poor. Therefore, each electrode body 43 includes a connector 430 and several electrode units 431. The connector 430 and several electrode units 431 are integrally formed, such as integrally stamped, integrally machined, integrally sintered, or integrally injection molded.

[0057] Specifically, taking the integral stamping of the sheet-like connector 430 and four electrode units 431 to form the electrode body 43 as an example, the electrode body 43 includes a connector and four electrode units 431. The four electrode units 431 are parallel or substantially parallel, and the electrode units 431 are perpendicular to the connector and can conduct electricity with each other. When wiring, it is only necessary to electrically connect the wire to the connector or any one of the electrode units 431. In other embodiments, the connector can be replaced with other styles, such as a mesh structure, a sheet structure, etc., and it is also possible for the electrode units 431 to be non-perpendicular to the connector, or for multiple electrode units 431 to be non-parallel.

[0058] The two electrode bodies 43 are connected to the electrode base 42 as a whole by injection molding. The two electrode bodies 43 are insulated from each other, that is, there are gaps or barriers between each position of the positive electrode body 43 and the negative electrode body 43. With this configuration, there is no need to use other means to weld or electrically connect multiple positive electrode units 431 or multiple negative electrode units 431, which can effectively improve accuracy and production and installation efficiency, and reduce costs.

[0059] Electrode unit 431 can be selected from wire electrodes, sheet electrodes, etc. In this embodiment, sheet electrodes are selected for electrode unit 431, and the width and thickness of the sheet electrodes can be set as needed. One end of electrode unit 431 is exposed from one side of electrode body 43, and the exposed part is the working end. Connector 430 serves as the welding end or wiring end. The height of the working end of electrode unit 431 can be set as needed, generally 0-3mm, preferably 0.3mm, 0.4mm, 0.5mm, 0.6mm, etc. Both electrode bodies 43 need to be connected to the positive or negative terminal of the RF host through connecting wires, metal parts, etc.

[0060] The number of electrode cells 431 in each electrode body 43 is not limited, for example, two, three, four, etc. Generally speaking, the number of electrode cells 431 in two electrode bodies 43 is equal, but of course, the number may not be equal. In this embodiment, please refer to... Figure 7 As shown, each electrode body 43 has four electrode cells 431. One electrode cell 431 of the electrode body 43 serves as the positive electrode (hereinafter referred to as the positive electrode cell 431), and the other electrode cell 431 of the electrode body 43 serves as the negative electrode (hereinafter referred to as the negative electrode cell 431). The four positive electrode cells 431 and the four negative electrode cells 431 are divided into two electrode rows, which are defined as the first electrode row and the second electrode row, respectively. The two electrode rows are arranged opposite to each other. The first electrode row and the second electrode row can be parallel to each other or not parallel. For example, the first electrode row and the second electrode row can be distributed in a figure-eight, inverted figure-eight, or V shape.

[0061] Each electrode row has four electrode heads 40, consisting of two positive electrode cells 431 and two negative electrode cells 431. The positive and negative electrode cells 431 in each electrode row are alternately distributed along the front-to-back direction. Generally, it is preferable that the polarities of any two adjacent electrode cells 431 and any two opposing electrode cells 431 are opposite, that is: in the first and second electrode rows, the positive electrode cells 431 and negative electrode cells 431 are opposite each other; the leading edge of the first electrode row is the negative electrode cell 431, and the leading edge of the second electrode row is the positive electrode cell 431; or the leading edge of the first electrode row is the positive electrode cell 431, and the leading edge of the second electrode row is the negative electrode cell 431.

[0062] The spacing between the two electrode rows is unlimited, and within the same electrode row, the spacing between the positive electrode cell 431 and the negative electrode cell 431 is unlimited. For example, the edge distance between the two electrode rows is 0.6mm-2.2mm, and the edge distance between the positive electrode cell 431 and the negative electrode cell 431 within the same electrode row is 0.4mm-1.5mm.

[0063] In other embodiments, the arrangement of the positive electrode unit 431 and the negative electrode unit 431 can also adopt other schemes, such as: multiple positive electrode units 431 and multiple negative electrode units 431 arranged in a circle, divided into three or four electrode rows, etc.; or in two electrode rows, the positive electrode units 431 are opposite to each other and the negative electrode units 431 are opposite to each other or relatively staggered; or two adjacent electrode units 431 have the same polarity.

[0064] One end of both the positive electrode cell 431 and the negative electrode cell 431 is exposed from one side of the electrode holder 42, serving as the active end. The active end can be perpendicular to one side of the electrode holder 42, or the following scheme can be adopted: Please refer to... Figure 5 As shown, the exposed portions of the positive electrode unit 431 and the negative electrode unit 431 are inclined, and the direction of inclination is not limited. Preferably, the working parts of the two electrode rows gradually incline outward, that is, they form a trumpet shape from bottom to top. The angle ∠A between the working parts of the two electrode rows can be 0°-70°, such as 0°, 10°, 45°, 50°, 70°, etc., so that when the electrode head 40 is close to the lesion site, the sides of the positive electrode unit 431 and the negative electrode unit 431 can contact the tissue as much as possible, increasing the contact area between the electrode and the tissue, and achieving a better ablation effect.

[0065] The support 41 has a connecting part 410. The style and position of the connecting part 410 are not limited. The connecting part 410 is used to connect with the electrode rod assembly 30. For example, the connection method can be plug-in, that is, the front end of the electrode rod assembly 30 is inserted into the connecting part 410. The center line of the connecting part 410 can also be regarded as the center line of the front end of the electrode rod assembly 30. The outermost end of the electrode body 43 forms an electrode plane. The center line of the connecting part 410 or the center line of the front end of the electrode rod assembly 30 is used as a reference line. The electrode plane and the reference line can be arranged parallel to each other or at an angle. In this embodiment, please refer to... Figure 5 As shown, the electrode plane and the reference line (in) Figure 13 In the middle, the reference line is shifted upwards by a certain distance, and the two are set at an angle, with the included angle ∠B being an acute angle. The degree of ∠B can be set as needed, such as 5°, 10°, 15°, etc. That is, in the direction from back to front, the electrode plane gradually tilts towards the rear side of the support 41 (i.e., the back side of the exposed side of the electrode seat 42). This setting allows the electrode head 40 to enter the target area more effectively.

[0066] In addition, the electrode head 40 may also include a temperature control component 44, which is embedded in the electrode base 42. A portion of the temperature control component 44 is exposed, located between the two electrode rows of the side electrode assembly. The structure of the temperature control component 44 is not limited. For example, the temperature control component 44 includes a temperature sensor and a heating element. The temperature sensor is used to detect the temperature, and the heating element is used for heating. Of course, the temperature control component 44 can also use mature products in the prior art.

[0067] The temperature control component 44 is mainly used to detect and report the temperature near the ablation site, and then transmit the temperature information to the matching temperature-controlled radiofrequency ablation system, i.e., the main unit. The main unit can make timely adjustments based on the temperature information, such as heating, to control the temperature. The temperature value can be set as needed, such as 60℃, 70℃, etc., thereby minimizing mucosal damage and promoting faster postoperative recovery. Using temperature-controlled ablation for surgery eliminates the need for incisions, making it a minimally invasive procedure with minimal or no bleeding during the operation.

[0068] Of course, in some embodiments, the electrode head 40 may not be equipped with a temperature control component 44.

[0069] The manufacturing method of the electrode head 40 provided in this embodiment is as follows:

[0070] Two electrode bodies 43 are processed by stamping, one of which serves as the positive electrode and the other as the negative electrode. Each electrode body 43 has a connecting piece and four electrode units 431.

[0071] The two electrode bodies 43 are arranged in a specific way, so that the four positive electrode cells 431 and the four negative electrode cells 431 are divided into two electrode rows. Each row has two positive electrode cells 431 and two negative electrode cells 431. The positive electrode cells 431 and the negative electrode cells 431 are distributed alternately. In the direction from back to front, the polarity of the electrode cells 431 in one electrode row is negative, positive, negative, positive in sequence, and the polarity of the electrode cells 431 in the other electrode row is positive, negative, positive, negative in sequence.

[0072] Two electrode bodies 43 are simultaneously integrated onto the electrode base 42 by injection molding. A portion of the positive electrode unit 431 and the negative electrode unit 431, i.e. the working end, is exposed. A connecting piece or a welding end of any electrode unit 431 is used to connect with a connecting wire. The connection method is not limited, such as welding.

[0073] The temperature control component 44 is assembled into the pre-drilled hole on the electrode holder 42. Alternatively, the temperature control component 44 and the electrode holder 42 can be integrally injection molded.

[0074] Weld or bond the positive electrode unit 431 and the negative electrode unit 431 with connecting wires of different polarities respectively, and lead the connecting wires out from the rear end of the support body 41. Then, embed and fix the assembled electrode seat 42 on the support body 41. One side of the electrode seat 42 is exposed, that is, the working end of the electrode unit 431 is exposed.

[0075] For instructions on using the radiofrequency ablation electrode 100 provided in this embodiment, please refer to [link / reference needed]. Figure 14 As shown.

[0076] The above steps can be added, removed, modified, or their order adjusted as needed. For example, if there is no temperature control component 44, then the corresponding steps are not required.

[0077] Example 2:

[0078] Please refer to Figure 15 As shown, Embodiment 2 of the present invention provides a radiofrequency ablation electrode 100, which is further improved based on Embodiment 1.

[0079] The improvement lies in the pre-bending of the electrode rod, that is, the electrode rod assembly 30 is divided into at least two segments, and the two segments are set at an angle. The angle is not limited and can be set as needed, such as 5°, 10°, 15°, etc.

[0080] The pre-bending scheme for the electrode rod assembly 30 is not limited. For example, the electrode rod assembly 30 can be made of a rigid material, meaning that it cannot be bent again after pre-bending, and the bending angle of the electrode rod assembly 30 is fixed. Other technical solutions can also be adopted: Please refer to... Figure 16 As shown, the electrode rod assembly 30 includes a reinforcing section 31 and a malleable section 32. The reinforcing section 31 is made of a rigid material and cannot be bent. The malleable section 32 can be made of a bendable material such as soft stainless steel, and its bending angle is adjustable. The bending angle of the malleable section 32 can be pre-bent by staff before leaving the factory or bent on-site by medical personnel. It should be noted that bending the malleable section 32 requires applying a preset threshold force: the malleable section 32 can only be bent when the force applied to it is greater than the preset threshold; when the force applied to it is less than the preset threshold, the malleable section 32 cannot be bent, thus avoiding abnormal bending of the radiofrequency ablation electrode 100 during operation. For the usage status of the radiofrequency ablation electrode 100, please refer to [reference needed]. ​ As shown.

[0081] Generally speaking, the diameter of the reinforcing section 31 can be larger than the diameter of the malleable section 32, making it more flexible to use in conjunction with the endoscope in the narrow space of the nasal cavity and less likely to interfere with the endoscope. Of course, the diameter of the reinforcing section 31 can also be smaller than or equal to the diameter of the malleable section 32.

[0082] Because the surface of the nasal turbinate mucosa is not smooth and the root of the posterior inferior nasal nerve is located in a deep position, the electrode rod assembly 30 can be bent, which allows the side electrode assembly and electrode head 40 to better adhere to the surface of the nasal turbinate mucosa for radiofrequency ablation.

[0083] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A radiofrequency ablation electrode, characterized in that, It includes a connecting component, a handle component, an electrode rod component, and an electrode head arranged sequentially; the electrode head includes a support body, an electrode base, and two electrode bodies with opposite polarities, the electrode base is embedded in the support body, and the electrode body includes an integrally formed connector and several electrode units, both of which are integrally injection molded with the electrode base and the electrode units of the two are alternately distributed.

2. The radiofrequency ablation electrode according to claim 1, characterized in that, All of the electrode units are divided into two electrode rows, which are distributed along the front-to-back direction.

3. The radiofrequency ablation electrode according to claim 2, characterized in that, The polarities of any two adjacent electrode cells and / or any two opposing electrode cells are opposite.

4. The radiofrequency ablation electrode according to claim 1, characterized in that, The electrode unit is perpendicular to the connector.

5. The radiofrequency ablation electrode according to claim 1, characterized in that, The working end of the electrode unit is exposed from one side of the electrode holder and tilted outward.

6. The radiofrequency ablation electrode according to claim 1, characterized in that, The working ends of several electrode units form an electrode plane, and the electrode plane is set at an angle to the front center line of the electrode rod assembly, with the angle being an acute angle.

7. The radiofrequency ablation electrode according to claim 1, characterized in that, The electrode head also includes a temperature control component, which is embedded in the electrode holder and exposed between several individual electrodes.

8. The radiofrequency ablation electrode according to claim 7, characterized in that, The temperature control component is integrally injection molded with the electrode body.

9. The radiofrequency ablation electrode according to claim 1, characterized in that, The electrode rod assembly is pre-bent.

10. The radiofrequency ablation electrode according to claim 1, characterized in that, The electrode rod assembly includes a reinforcing section and a malleable section, the bending angle of which is adjustable.

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