An ablation device with a stable structure, a method of manufacture and an assembly

Abstract

The application provides an ablation device with a stable structure, comprising an ablation assembly, a connecting catheter and a handle, wherein the ablation assembly comprises a spiral tube and an ablation electrode, the spiral tube comprises a tube starting end located in the middle and a tube tail end located on the outside, the tube starting end is connected with the distal end of the connecting catheter, and the tube tail end is fixedly connected to the side wall of the spiral tube. The electrode of the ablation device is arranged on the spiral-shaped tube, so that the treatment area is increased, the spiral design improves the fit between the skin and the product, and the ablation device is especially suitable for oral diseases which need large-area ablation treatment. The tube tail end is fixedly connected to the side wall of the spiral tube, so that the stability of the overall structure is increased, and accidents caused by the contact between the electrodes due to the shaking of the device are avoided.

Description

Technical Field

[0001] This invention relates to medical devices, and more particularly to an ablation device with a stable structure, its preparation method, and its components. Background Technology

[0002] Malignant tumors have become a global medical challenge. Various ablation techniques have emerged in response to this trend. Compared to traditional treatments such as surgery, chemotherapy, and radiotherapy, ablation techniques not only achieve comparable efficacy but also offer unique advantages in preserving the patient's appearance. Currently, the market is dominated by temperature-based ablation techniques, such as radiofrequency ablation, microwave ablation, laser ablation, high-intensity focused ultrasound (HIFU), and cryoablation.

[0003] Unlike physical therapies based on thermal ablation principles, such as radiofrequency, microwave, cryotherapy, and focused ultrasound, pulsed ablation technology applies a high-voltage pulsed electric field with a pulse width on the order of microseconds around tumor cells. This disrupts the stability of the tumor cell membrane surface, creating multiple hydrophilic micropores, thereby disrupting cell homeostasis and ultimately leading to cell death. The emergence of the irreversible electroporation theory offers a new approach to the treatment of malignant tumors and has significant application value for hepatobiliary and pancreatic tumors with complex structures adjacent to blood vessels, bile ducts, and pancreatic ducts.

[0004] For example, in the prior art, application number 202010662682.8 provides a cardiac pulse electric field ablation catheter. By setting an odd number of ring electrodes in an array at a certain interval on the end tube, it helps to form a ring-shaped and continuous ablation zone on the tissue during pulse ablation, thereby improving ablation efficiency and avoiding the safety problems caused by energy concentration.

[0005] However, in the existing technology, the ring-shaped electrode structure is unstable and easily shakes, which can cause short circuits between the two electrodes, thus causing unnecessary damage to the human body. Furthermore, for open lesions with large areas of tissue, such as cavitary mucosal diseases, there is no existing device that can effectively perform pulse ablation treatment. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention increases the treatment area by arranging the electrodes of the ablation device on a spiral-shaped tube, which is especially suitable for oral diseases that require large-area ablation treatment. Furthermore, the tail end of the tube is fixedly connected to the side wall of the spiral tube, which increases the stability of the overall structure and avoids accidents caused by the electrodes touching each other due to the shaking of the device.

[0007] Specifically, the following options are included:

[0008] In a first aspect, the present invention provides an ablation device with a stable structure, comprising:

[0009] An ablation assembly, comprising a spiral tube and a plurality of ablation electrodes arranged on the spiral tube;

[0010] A connecting conduit, the distal end of which is used to support the spiral tube;

[0011] A handle is connected to the proximal end of the connecting catheter, and the power supply circuit of the ablation electrode passes through the handle and the connecting catheter and is electrically connected to the ablation electrode;

[0012] The spiral tube includes a central starting end and an external tail end. The central starting end is connected to the distal end of the connecting conduit, and the tail end is fixedly connected to the side wall of the spiral tube.

[0013] More preferably, the spiral tube is a thermoplastic straight tube formed by heat treatment, and the tail end of the tube is fixed to the side wall of the spiral tube by bonding or hot melting.

[0014] More preferably, the spiral tube is a hollow tubular structure, and the tail end of the tube has an inner tube wall with a preset angle formed by cutting. The inner tube wall with a preset angle at the tail end of the tube is fixedly connected to the outer surface of the side wall of the spiral tube.

[0015] More preferably, the spiral tube has a multi-turn structure, the rotation angle of the spiral tube from the starting end to the tail end of the fitting is greater than 4π, and each turn of the spiral tube is located in the same plane.

[0016] More preferably, on the adjacent tube of each of the spiral tubes where the ablation electrode is located, there is another ablation electrode corresponding to the position of the ablation electrode.

[0017] More preferably, the ablation electrode is a pulse ablation electrode, which includes a positive electrode and a negative electrode. Adjacent ablation electrodes arranged along the rotation direction of the spiral tube have opposite electrode polarities, and two ablation electrodes correspondingly arranged on adjacent sections of the spiral tube have the same electrode polarity.

[0018] More preferably, the spacing between adjacent tubes of the spiral tube remains constant.

[0019] More preferably, the power supply circuit is individually connected to each of the melting electrodes for individually triggering each of the melting electrodes, and also includes a control unit for controlling the triggering sequence of the melting electrodes.

[0020] Secondly, the present invention provides a method for preparing an ablation device, comprising:

[0021] One end of a thermoplastic insulating straight tube is cut to a preset length and angle to form the tail end of the tube.

[0022] The cut insulated straight tube is heat-treated to shape it into a pre-designed two-dimensional spiral tube.

[0023] The cut end of the pipe fitting is attached to the preset fitting position of the two-dimensional spiral pipe fitting. The cut end and the outside of the pipe wall at the preset fitting position are then heat-fused to form a closed state, thus forming a spiral pipe.

[0024] Multiple ablation electrodes are sequentially arranged on a spiral tube, and the ablation electrodes are electrically connected to the power supply circuit to form an ablation assembly;

[0025] The connecting catheters are connected to the ablation assembly and the handle respectively, and the power supply circuit extends out from the end of the handle to obtain the ablation device.

[0026] Thirdly, the present invention provides an oral treatment component, including an ablation device, an oral mirror, and a support mechanism as described above, wherein the support mechanism is used to hold the ablation device and the oral mirror.

[0027] As described above, the present invention has the following beneficial effects:

[0028] 1) By arranging the electrodes of the ablation device on a spiral-shaped tube, the treatment area is increased, and the spiral design improves the fit between the skin and the product, making it especially suitable for oral diseases that require large-area ablation treatment. Furthermore, the tail end of the tube is fixedly connected to the side wall of the spiral tube, which increases the stability of the overall structure and avoids accidents caused by the electrodes touching each other due to the shaking of the device.

[0029] 2) Because the tail of the spiral tube 1 is fixedly connected, a stable closed-loop structure is formed, which makes the structure more stable in the radial direction. The spiral structure maintains the spacing between the ablation electrodes. The electrodes of adjacent turns on the spiral tube are arranged with the same polarity and are set one-to-one, which can maximize the distance between ablation electrodes of different polarities and prevent the risk of them being too close. In the axial direction, the automatic conformity angle with the skin can be adjusted according to the pressure, resulting in better fit.

[0030] 3) All electrodes can be triggered sequentially according to the set order, not limited to the triggering order mentioned above. Targeted ablation can be performed according to the size of the lesion location, reducing the possibility of over-ablation. Furthermore, with the shape of the spiral tube and the corresponding electrode arrangement, there is a greater selectivity for the adjustable area. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the present invention, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the ablation device according to an embodiment of the present invention;

[0033] Figure 2 This is a side view of the ablation device according to an embodiment of the present invention;

[0034] Figure 3 This is a three-dimensional structural schematic diagram of the ablation device according to an embodiment of the present invention, viewed from top angle;

[0035] Figure 4 This is a schematic diagram of the spiral tube structure according to an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram illustrating the operating principle of one embodiment of the ablation device according to an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the combined structure of the oral treatment component according to an embodiment of the present invention;

[0038] Figure 7 for Figure 6 Top view;

[0039] Figure 8 This is a front view of the support mechanism according to an embodiment of the present invention;

[0040] Figure 9 This is a side view of the support mechanism according to an embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram illustrating the usage principle of the oral treatment component according to an embodiment of the present invention.

[0042] The corresponding reference numerals in the attached figure are as follows:

[0043] Ablation assembly, spiral tube 1, tube start end 11, tube tail end 12;

[0044] Ablation electrode 2, first electrode 21, second electrode 22, third electrode 23, fourth electrode 24, fifth electrode 25, sixth electrode 26;

[0045] Connecting conduit 3, bent connecting part 31, handle 4, transition connecting part 41;

[0046] Support mechanism 5, lip support 51, arc-shaped support groove 511, expansion bracket 52, ablation device clamp 53, oral endoscope clamp 54, connecting support column 531, positioning clamp 532, elastic positioning component 533, telescopic positioning hole 534. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. In this embodiment, "proximal end" refers to the direction closer to the operator; "distal end" refers to the direction farther away from the operator. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Example:

[0049] See Figure 1-10 In this embodiment, an ablation device with a stable structure, a method for preparing the ablation device, and an oral treatment component including the ablation device are provided.

[0050] The oral treatment component is primarily used to treat oral mucosal diseases. It enters through the oral cavity, a natural passageway in the body, and performs pulse ablation treatment on the tissues affected by mucosal diseases. The principle of pulse ablation is that a brief DC high-voltage pulse can create an electric field of several hundred volts within a few centimeters. This electric field can damage cell membranes, creating perforations. If the electric field at the cell membrane exceeds a threshold, the electroperforation is irreversible, keeping the pores open, leading to cell necrosis or apoptosis. As the oral cavity is a special ablation target, unlike conventional treatments for tissues such as the heart or pulmonary arteries that require laparoscopic surgery, the ablation device in the oral treatment component needs a large and controllable treatment area. Furthermore, during treatment, care must be taken to prevent short circuits caused by shaking between the pulse ablation electrodes, which could lead to unnecessary harm to the body. This embodiment first provides an ablation device with a stable structure, such as... Figure 1-3 As shown, it specifically includes an ablation assembly, wherein, specifically, the ablation assembly includes a spiral tube 1 disposed at the distal end and a plurality of ablation electrodes 2 arranged on the spiral tube 1; the ablation electrodes 2 are provided with DC high voltage pulses through a power supply device (power supply and pulse generator) to generate pulse ablation treatment on the lesion tissue. The principle of generating pulse energy is existing technology and will not be described in detail here.

[0051] The ablation device also includes a connecting catheter 3 and a handle 4. The distal end of the connecting catheter 3 supports the spiral tube 1; the handle 4 is connected to the proximal end of the connecting catheter 3, and the power supply circuit for the ablation electrode 2 passes through the handle 4 and the connecting catheter 3 and is electrically connected to the ablation electrode 2. During operation, it can be operated as follows... Figure 5 As shown, the user holds the handle, aligns the distal flexible spiral tube with the location of the oral mucosal disease, turns on the power to release pulses through the pulse generator, and transmits them through the wire to the ring ablation electrode connected to the distal end of the catheter to perform pulse ablation treatment on the lesion.

[0052] The spiral tube 1 specifically includes a tube starting end 11 located in the middle, which is connected to a bent connecting end 31 extending from the distal end of the connecting conduit 3. The spiral tube 1 is formed by rotating at least two turns from the tube starting end 11 as the starting point of the spiral. That is, the rotation angle of the spiral tube 1 from the tube starting end 11 to the tube tail end 12 is greater than or equal to 4π, and each turn of the spiral tube 1 is located on the same plane when not in use. Multiple ablation electrodes 2 are correspondingly arranged on the outer surface of the spiral tube 1. Compared to traditional ablation devices, the spiral structure in this embodiment, combined with the ablation electrodes arranged on it, results in a gradually increasing ablation area, making it suitable for open oral surgery. The ablation area can be adjusted according to the actual size of the lesion tissue, and the spiral design further improves the fit between the skin and the product. Furthermore, and more preferably, in order to prevent short circuits caused by contact between the pulse ablation electrodes due to shaking of the ablation device during use, in this embodiment, preferably, the other end of the spiral tube 1 opposite to the starting end 11 is the tail end 12, which is the end of the spiral structure. Specifically, the tail end 12 is connected to the side wall of the spiral tube 1. Since the tail of the spiral tube 1 is fixed to the side wall of the main body of the spiral tube 1, a stable closed-loop structure is formed, which makes the structure more stable in the radial direction, maintains the spacing between the ablation electrodes, and prevents the ablation electrodes from colliding due to shaking of the ablation device during operation; and in the axial direction, it can automatically adjust the contact angle with the skin according to different pressure, resulting in better fit.

[0053] Furthermore, in this embodiment, preferably, the upper surfaces of the spiral tube 1 are located on the same plane. The spiral tube is a flexible body, and its shape is a planar spiral when not in use, which can perfectly fit the lesion under the action of external force. The spiral tube 1 is specifically made of thermoplastic tubing through heat treatment and shaping. The integral molding ensures the stability and reliability of its structure. The tail end 12 of the tube is fixed to the side wall of the spiral tube 1 by bonding, heat fusion or other feasible fixing methods, preferably heat fusion fixing, to effectively prevent it from falling off. The spiral tube 1 is a hollow tubular structure. The tail end 12 of the tube has an inner tube wall with a preset angle formed by cutting. The inner tube wall with a preset angle of the tail end 12 of the tube is connected to the outer surface of the side wall of the spiral tube 1. The preset angle can be 30° to 45°, preferably 30°. Since the spiral tube 1 is a hollow tubular structure, after cutting, the formed inclined surface contains the inner surface of the spiral tube 1. Finally, the inner surface of the tail end 12 of the spiral tube 1 is partially covered with the outer surface of the side wall and then fixed.

[0054] More preferably, see the appendix to the instruction manual. Figure 4 On adjacent sections of the spiral tube 1 where each ablation electrode 2 is located, another ablation electrode 2 is provided, corresponding to the position of that ablation electrode 2. Specifically, the ablation electrode 2 is a pulse ablation electrode 2, comprising a positive electrode and a negative electrode. Adjacent ablation electrodes 2 arranged along the same rotation direction of the spiral tube 1 have opposite electrode polarities, while two corresponding ablation electrodes 2 on adjacent sections of the spiral tube 1 have the same electrode polarity. Arranging electrodes of adjacent turns on the spiral tube 1 with the same polarity and a one-to-one correspondence maximizes the distance between ablation electrodes of different polarities, preventing risks arising from excessive proximity. Furthermore, more preferably, the spacing between adjacent sections of the spiral tube 1 remains constant. The rotation shape of the spiral tube can be set as an Archimedean spiral, ensuring that the spacing between adjacent sections remains constant. Specifically, the Archimedean spiral is expressed as r = a + bθ, where a and b are real numbers. a is the distance from the starting point to the origin of the polar coordinates, b is the rate of change of the spiral, and θ is the rotation angle of the spiral relative to the starting point. According to the above formula, the distance between adjacent pipes can remain constant at a distance b. Only at the tail end 12 of the pipe fitting, after being bent and deformed, does the tail end 12 adhere to the side wall of the spiral pipe 1, forming a closed-loop structure.

[0055] In this embodiment, the power supply circuit is individually connected to each ablation electrode for individual triggering. It also includes a control unit to control the triggering sequence of the ablation electrodes. Specifically, each electrode corresponds to a different control interface, allowing for independent triggering and operation without interference, while maintaining coordination between them. This facilitates doctors in adjusting the pulse generation range according to the actual situation. Electrode and generator matching utilizes RFID technology to accurately determine whether the electrode and generator are compatible, preventing misoperation due to electrodes not being connected to their corresponding interfaces.

[0056] Specifically, to illustrate the technical effects, in conjunction with the appendix... Figure 4 In this embodiment, six ablation electrodes are sequentially arranged. In other embodiments, the number is not limited to this; the same number of electrodes can be arranged in each spiral turn. Adjacent electrodes within the same spiral turn have different polarities. The six electrodes are specifically: first electrode 21, second electrode 22, third electrode 23, fourth electrode 24, fifth electrode 25, and sixth electrode 26. Second electrode 22 and fifth electrode 25 are of the same polarity, while the remaining electrodes are of the opposite polarity to second electrode 22. When the second electrode 22 and the fifth electrode 25 are positive electrodes, the first electrode 21, the third electrode 23, the fourth electrode 24, and the sixth electrode 26 are negative electrodes. Depending on the area to be ablated, the electrodes can be triggered in pairs sequentially. For example, the triggering sequence could be: second electrode 22 - first electrode 21, second electrode 22 - third electrode 23, fifth electrode 25 - fourth electrode 24, fifth electrode 25 - sixth electrode 26. All electrodes can be triggered sequentially according to a set order, not limited to the above-mentioned sequence. Targeted ablation can be performed based on the size of the lesion, reducing the possibility of over-ablation. Furthermore, the shape of the spiral tube 1 and the corresponding electrode arrangement provide greater selectivity for the adjustable area.

[0057] In this embodiment, the preparation method of the ablation device specifically includes the following steps:

[0058] S1: Cut one end of the thermoplastic insulating tube to a preset length and a preset angle to form the tube end 12. The preset angle can be 30° to 45°, preferably 30°. Since the insulating tube is a hollow insulating tube, the tube end 12 is formed by the inner wall of the tube.

[0059] S2: Heat-treat the cut insulating material tube to shape it into a pre-set planar two-dimensional spiral tube, which can be specifically an Archimedean spiral shape.

[0060] S3: The cut end 12 of the pipe fitting is attached to the preset fitting position of the two-dimensional spiral pipe fitting, and the cut end and the outside of the pipe wall at the preset fitting position are heat-fused to form a closed state, forming the spiral pipe 1.

[0061] In this embodiment, preferably, after the insulating material tube is shaped, the spiral tube is inserted into the heat shrink tubing, such that the heat shrink tubing is located on the side wall of the tube fitting tangent to the tail end 12. The tail end 12 of the tube fitting is then attached to the tangent tube wall and inserted into the heat shrink tubing. The conduit at the tail end 12 of the tube fitting is then heat-fused to the tangent spiral tube to form a closed state.

[0062] S4: Multiple ablation electrodes 2 are arranged sequentially on the spiral tube 1, and the ablation electrodes 2 are electrically connected to the power supply circuit to form an ablation assembly;

[0063] S5: Connecting conduit 3 to ablation assembly and handle 4 respectively, and extending power supply circuit from the end of handle 4 to obtain ablation device.

[0064] In addition, in this embodiment, it is further preferred that the ablation device can be used in conjunction with the support mechanism 5 to further increase stability. The ablation device, the oral mirror 6, and the support mechanism 5 together constitute an oral treatment component, and the support mechanism 5 is used to support the ablation device and the oral mirror 6.

[0065] Specifically, in this embodiment, the support mechanism 5 includes: a lip support 51, a spreading bracket 52, an ablation device clamp 53, and an oral endoscope clamp 54;

[0066] Two lip supports 51 are provided, and the two ends of the expansion bracket 52 are connected to the two lip supports 51 respectively. The lip supports 51 are provided with arc-shaped support grooves 511 for supporting the lips. The arc-shaped support grooves 511 facilitate the fit of the patient's lips and prevent slippage. Since there are two lip supports 51, they can stably support the patient's upper and lower lips, keeping the mouth open. The expansion bracket 52 can be set to a corresponding size according to the needs of the surgery, and the size of the expansion bracket 52 determines the degree of mouth opening. The expansion bracket 52 includes at least two components, with the ablation device clamp 53 and the oral endoscope clamp 54 located between the two expansion brackets 52. More preferably, the expansion bracket 52 is a columnar bent structure, and the lip supports 51 are generally arc-shaped. Combined with the curvature of the lips and the bending state of the expansion bracket 52, it can achieve the effect of making room and increasing the surgical space. In this embodiment, the bending angle of the expansion bracket 52 is 120°~160°, but it can also be set according to the actual surgical needs.

[0067] Both the ablation device clamp 53 and the oral endoscope clamp 54 include a connecting post 531 and a positioning clamping part 532. The connecting post 531 of the ablation device clamp 53 and the oral endoscope clamp 54 are respectively connected to one of the lip support members 51, such as... Figure 6-7 As shown, the ablation device clamp 53 and the oral endoscope clamp 54 can be respectively disposed on different lip support members 51, or in other embodiments, they can be disposed on the same lip support member 51. The clamping method can be one of many different clamping methods known to those skilled in the art.

[0068] By cooperating with the patient's mouth, the expansion bracket 52 can remain stable relative to the patient's oral cavity. Furthermore, by setting up the ablation device clamp 53 and the oral endoscope clamp 54, not only can the ablation device remain stable during the operation, preventing additional damage caused by shaking, but the stable clamping of the oral endoscope can also increase the field of view, further ensuring the success rate of the operation.

[0069] In this embodiment, one end of the connecting post 531 is rotatably connected to the lip support 51, and the other end is fixedly connected to the positioning clamping part 532, or one end of the connecting post 531 is fixedly connected to the lip support 51, and the other end is rotatably connected to the positioning clamping part 532. That is to say, both the ablation device clamping part 53 and the oral endoscope clamping part 54 can rotate relative to the lip support 51, thus achieving stable clamping and flexible adjustment of the angles of the ablation device and the oral endoscope device 6.

[0070] More preferably, in this embodiment, the positioning clamping part 532 includes an elastic positioning member 533, which is provided with a telescopic positioning hole 534. The telescopic positioning hole 534 of the ablation device clamping member 53 matches the clamped part of the ablation device, and the oral endoscope clamping member 54 matches the clamped part of the oral endoscope device. Specifically, a tapered transition member 41 is provided between the connecting catheter 3 and the handle 4. The elastic positioning member 533 of the ablation device clamping member 53 is clamped on the outer periphery of the tapered transition member 41. Therefore, when clamping the ablation device, as the tapered transition member 41 is inserted into the telescopic positioning hole 534, the telescopic positioning hole 534 will change with the deformation of the elastic positioning member 533 and can provide a circumferential contraction force to the tapered transition member 41 to maintain the stability of the clamping. The oral endoscope device can be clamped in the same way, or it can be clamped directly by the cylinder of the oral endoscope device handle. The inner diameter of the corresponding telescopic positioning hole 534 in its original state is smaller than the outer diameter of the cylinder to ensure that there is a contraction force after squeezing and inserting.

[0071] In use, the connecting catheter 3 of the ablation device can be detachably connected to the handle 4, and the mirror observation end and handle of the oral endoscope device 6 can also be detachably connected. After the handles of both are clamped and positioned by the support device 5, the connecting catheter 3 and the mirror observation end are respectively installed on their respective handles, and then the entire oral treatment component is positioned by positioning the support device 5 with the lips.

[0072] In this document, the directional terms such as front, back, top, and bottom are defined according to the positions of the components in the accompanying drawings and the positions between the components, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed by this invention.

[0073] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0074] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. An ablation device with a stable structure, comprising: The ablation assembly includes a spiral tube (1) and a plurality of ablation electrodes (2) arranged on the spiral tube (1). A connecting conduit (3) is provided at its distal end to support the spiral tube (1). Handle (4), the handle (4) is connected to the proximal end of the connecting conduit (3), and the power supply circuit of the ablation electrode (2) passes through the handle (4) and the connecting conduit (3) and is electrically connected to the ablation electrode (2); The ablation device is characterized in that it is used to perform pulse ablation treatment on tissues in the oral cavity that have mucosal diseases. The spiral tube (1) includes a tube start end (11) located in the middle and a tube tail end (12) located on the outside. The tube start end (11) is connected to the distal end of the connecting catheter (3). The tube tail end (12) is connected to the side wall of the spiral tube (1). The spiral tube (1) is a stable closed-loop structure. The upper surface of the spiral tube (1) is located on the same plane. The spiral tube (1) is a flexible body. The shape of the spiral tube (1) is a planar spiral when it is not in use. The spiral tube (1) can perfectly fit the lesion under the action of external force.

2. The ablation device with a stable structure according to claim 1, characterized in that, The spiral tube (1) is a thermoplastic tube that is shaped by heat treatment, and the end (12) of the tube is bonded or heat-fused to the side wall of the spiral tube (1).

3. The ablation device with a stable structure according to claim 2, characterized in that, The spiral tube (1) is a hollow tubular structure. The tail end (12) of the tube has an inner tube wall with a preset angle formed by cutting. The inner tube wall with a preset angle of the tail end (12) of the tube is connected to the outer surface of the side wall of the spiral tube (1).

4. The ablation device with a stable structure according to claim 1, characterized in that, The spiral tube (1) has a multi-turn structure. The rotation angle of the spiral tube (1) from the starting end (11) to the tail end (12) of the fitting is greater than or equal to 4π. When not in use, each turn of the spiral tube (1) is located in the same plane.

5. The ablation device with a stable structure according to claim 4, characterized in that, On the adjacent tube of the spiral tube (1) where each of the ablation electrodes (2) is located, there is another ablation electrode (2) corresponding to the position of the ablation electrode (2).

6. The ablation device with a stable structure according to claim 5, characterized in that, The ablation electrode (2) is specifically a pulse ablation electrode (2). The ablation electrode (2) includes a positive electrode and a negative electrode. The electrode polarities of adjacent ablation electrodes (2) arranged along the same rotation direction of the spiral tube (1) are opposite. The electrode polarities of two ablation electrodes (2) correspondingly arranged on adjacent tubes of the spiral tube (1) are the same.

7. The ablation device with a stable structure according to claim 5, characterized in that, The spacing between adjacent tubes of the spiral tube (1) remains unchanged.

8. The ablation device with a stable structure according to claim 6, characterized in that, The power supply circuit is individually connected to each of the ablation electrodes for individually triggering each ablation electrode, and also includes a control unit for controlling the triggering sequence of the ablation electrodes.

9. A method for preparing an ablation device as described in any one of claims 1-8, characterized in that, include: One end of the thermoplastic insulating pipe is cut according to a preset length and a preset angle to form the pipe end (12). The cut insulation is heat-treated to shape it into a pre-designed two-dimensional spiral tube. The cut end (12) of the pipe fitting is attached to the preset fitting position of the two-dimensional spiral pipe fitting, and the cut end and the outside of the pipe wall at the preset fitting position are heat-fused to form a closed state, forming a spiral pipe (1). Multiple ablation electrodes (2) are arranged sequentially on the spiral tube (1), and the ablation electrodes (2) are electrically connected to the power supply circuit to form an ablation assembly; The connecting catheter (3) is connected to the ablation component and the handle (4) respectively, and the power supply circuit is passed out from the end of the handle (4) to obtain the ablation device.

10. An oral treatment component, characterized in that, Includes the ablation device, the oral endoscope (6), and the support mechanism (5) as described in any one of claims 1-8, wherein the support mechanism (5) is used to support the ablation device and the oral endoscope (6).

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