Pulse ablation device

Abstract

The utility model relates to the field of oral cavity ablation, and discloses a pulse ablation device which is applied to oral cavity diseased tissue. The outer electrode is of an annular structure, the outer electrode is arranged on the peripheral side of the inner electrode in a surrounding mode, and the outer electrode and the inner electrode form an electrode pair so that pulses can be emitted to oral cavity diseased tissue; the first end of the sealing part is of a disc-shaped structure, the ends, close to the first end of the sealing part, of the inner electrode and the outer electrode are each of an arc-shaped structure and can penetrate through the sealing part, and the sealing part is attached to the peripheral side of the inner electrode and the peripheral side of the outer electrode. Through the design of the sealing piece, the edge of the tip of the electrode is not directly exposed, the electric field intensity at the tip of the electrode is reduced, and the tip discharge phenomenon is completely eradicated; according to the utility model, the electrode exposed outside is arranged to be of the arc-shaped structure so as to ensure that the sealing piece and the electrode are connected in a smooth fitting manner, so that the arc-shaped structure is utilized to disperse the electric field, the concentration of the electric field intensity at a single point is reduced, and the possibility of point discharge is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oral ablation, in particular to a pulse ablation device. BACKGROUND

[0002] The treatment of oral diseases usually adopts ablation treatment, and ablation surgery is a minimally invasive surgery that can be used to treat benign tumors or malignant tumors. The main method is to make tumor cells denature or coagulative necrosis by high temperature, which can also achieve the effect of killing tumors.

[0003] The ablation device of the prior art has a tip discharge phenomenon, which can cause the following problems: first, tip discharge can cause energy leakage from the ablation device, reducing the efficiency of energy transmission to the diseased tissue and affecting the treatment effect; second, tip discharge can also transmit energy to the surrounding normal tissue, causing unnecessary damage and increasing the risk of complications; third, tip discharge can also produce sparks or noise, affecting the operation experience and safety of the operator; in addition, tip discharge can also cause damage to the internal components of the ablation device, reducing the service life of the device.

[0004] Therefore, the above-mentioned problems of the ablation device of the prior art need to be solved. SUMMARY

[0005] In view of the above-mentioned problems of the prior art, the purpose of the present application is to solve the defect of tip discharge phenomenon of the ablation device in the prior art.

[0006] In order to solve the above-mentioned problems, the present application provides a pulse ablation device applied to oral diseased tissue, which comprises:

[0007] an inner electrode;

[0008] an outer electrode, which is a ring structure, is arranged around the outer periphery of the inner electrode, and forms an electrode pair with the inner electrode to emit pulses to the oral diseased tissue;

[0009] a closure, the first end of which is a disc structure, one end of the inner electrode and one end of the outer electrode close to the first end of the closure are arc structures, and both can pass through the closure, and the closure is fitted with the outer periphery of the inner electrode and the outer periphery of the outer electrode respectively.

[0010] Preferably, the height of the inner electrode protruding relative to the end face of the closure and the height of the outer electrode protruding relative to the end face of the closure are the same;

[0011] And / or, the surface area of one end of the inner electrode close to the first end of the closure and the surface area of one end of the outer electrode close to the first end of the closure are the same.

[0012] Preferably, the pulse ablation device further comprises a circuit board, the circuit board is arranged inside the first end of the closed member, the inner electrode and the outer electrode are both fixedly arranged on the circuit board, and a wire is connected to the side of the circuit board away from the first end of the closed member, the inner electrode and the outer electrode can both be electrically connected to the wire.

[0013] Preferably, the inner electrode is provided with an inner electrode fixing member at one end close to the circuit board, the circuit board is provided with an inner electrode insertion hole corresponding to the inner electrode fixing member, and the inner electrode is fixedly connected to the circuit board by being inserted into the inner electrode insertion hole through the inner electrode fixing member.

[0014] The outer electrode is provided with an outer electrode fixing member at one end close to the circuit board, the circuit board is provided with an outer electrode insertion hole corresponding to the outer electrode fixing member, and the outer electrode is fixedly connected to the circuit board by being inserted into the outer electrode insertion hole through the outer electrode fixing member.

[0015] Preferably, the inner electrode fixing member and / or the outer electrode fixing member is in a sheet structure.

[0016] Preferably, the inner electrode fixing member comprises an inner electrode abutting section and an inner electrode insertion section, the cross-sectional size of the inner electrode insertion section is matched with that of the inner electrode insertion hole, the inner electrode insertion section can be inserted into the inner electrode insertion hole, the cross-sectional size of the inner electrode abutting section is larger than that of the inner electrode insertion hole, and the inner electrode can abut on the circuit board through the inner electrode abutting section.

[0017] The outer electrode fixing member comprises an outer electrode abutting section and an outer electrode insertion section, the cross-sectional size of the outer electrode insertion section is matched with that of the outer electrode insertion hole, the outer electrode insertion section can be inserted into the outer electrode insertion hole, the cross-sectional size of the outer electrode abutting section is larger than that of the outer electrode insertion hole, and the outer electrode can abut on the circuit board through the outer electrode abutting section.

[0018] Preferably, the pulse ablation device further comprises a handle, the handle is connected to the closed member, and the handle is provided with a through hole at one end away from the closed member, the through hole is used for the wire to pass through.

[0019] Preferably, the pulse ablation device further comprises a limiting member,

[0020] One end of the limiting member is located inside the closed member and connected to the circuit board, and the limiting member is provided with a first limiting hole for the wire to pass through.

[0021] The other end of the limiting piece is located in the interior of the handle, the limiting piece is provided with a second limiting hole for the wire to pass through, and the limiting piece is provided with a limiting groove in communication with the first limiting hole and the second limiting hole respectively, and the limiting groove is used for accommodating the wire.

[0022] Preferably, the closure is a molded encapsulation.

[0023] Preferably, the outer electrode is a ring structure, the inner electrode is a circular structure, and the inner electrode and the outer electrode are concentrically arranged.

[0024] Based on the above technical solution, the pulse ablation device has the following beneficial effects:

[0025] Through the encapsulation of the closure on the inner electrode and the outer electrode, the tip edges of the inner electrode and the outer electrode are not directly exposed to the outside, reducing the electric field strength at the electrode tip and eliminating the occurrence of tip discharge phenomenon; and the connection between the electrode and the closure is designed as a fit connection, so that the exposed electrode is arranged in an arc structure to ensure that the closure and the electrode are in a smooth fit connection, thereby dispersing the electric field by using the arc structure, reducing the concentration of the electric field strength at a single point, thereby reducing the possibility of tip discharge; in addition, such arrangement not only protects the inner electrode and the outer electrode, reduces the opportunity of the tip edges of the inner electrode and the outer electrode contacting the oral lesion tissue, prevents the patient from being injured during operation, but also plays a role in fixing the inner electrode and the outer electrode, prevents the inner electrode and the outer electrode from shifting, and ensures that the inner electrode and the outer electrode can stably emit pulse energy. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0027] Figure 1 is a perspective view of the pulse device provided by the embodiments of the present application.

[0028] Figure 2 is a side view of the pulse device provided by the embodiments of the present application.

[0029] Figure 3 is an exploded view of the pulse device provided by the embodiments of the present application.

[0030] Figure 4 is an internal structure diagram of the first end of the pulse device in the first perspective view.

[0031] Figure 5 FIG. 7 is a schematic view of the internal structure of the first end of the pulse device from a second perspective, according to an embodiment of the present application.

[0032] Figure 6 FIG. 8 is a side view of the first end of the pulse device, according to an embodiment of the present application.

[0033] Figure 7 FIG. 9 is a schematic view of the structure of the closure, according to an embodiment of the present application.

[0034] Figure 8 FIG. 10 is a schematic view of the structure of the inner electrode, according to an embodiment of the present application.

[0035] Figure 9 FIG. 11 is a schematic view of the structure of the outer electrode from a first perspective, according to an embodiment of the present application.

[0036] Figure 10 FIG. 12 is a schematic view of the structure of the outer electrode from a second perspective, according to an embodiment of the present application.

[0037] Figure 11 FIG. 13 is a schematic view of the structure of the circuit board and the conductive wire from a first perspective, according to an embodiment of the present application.

[0038] Figure 12 FIG. 14 is a schematic view of the structure of the circuit board and the conductive wire from a second perspective, according to an embodiment of the present application.

[0039] Figure 13 FIG. 15 is a schematic view of the structure of the limiting member from a first perspective, according to an embodiment of the present application.

[0040] Figure 14 FIG. 16 is a schematic view of the structure of the limiting member from a second perspective, according to an embodiment of the present application.

[0041] Wherein, the reference signs are as follows: pulse ablation device 100, inner electrode 11, inner electrode fixing member 111, inner electrode abutting section 1111, inner electrode embedding section 1112, inner electrode body 1113, outer electrode 12, outer electrode fixing member 121, outer electrode abutting section 1211, outer electrode embedding section 1212, outer electrode body 1213, closure 13, circuit board 14, inner electrode jack 141, outer electrode jack 142, conductive structure 143, conductive wire 15, handle 16, through hole 161, connecting section 162, transition section 163, handheld section 164, first shell 165, second shell 166, limiting member 17, first limiting hole 171, second limiting hole 172, limiting groove 173, limiting member disc body 174, limiting member guide section 175. DETAILED DESCRIPTION

[0042] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0043] The term "one embodiment" or "an embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one implementation of the application. The appearances of the term "an embodiment" or "one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily referring to a single embodiment. In the description of the application, the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more of the features. Moreover, the terms "first", "second" and the like are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein.

[0044] As shown in Figures 1-14 The application discloses a pulse ablation device 100 applied to oral lesion tissue. Specifically, the pulse ablation device 100 comprises an inner electrode 11, an outer electrode 12 and a closure 13.

[0045] The outer electrode 12 is in a ring structure and is arranged around the outer periphery of the inner electrode 11 to form an electrode pair with the inner electrode 11 and emit pulses to the oral lesion tissue, so that the oral lesion tissue can be treated by pulse ablation; further, a discharge gap is arranged between the outer electrode 12 and the inner electrode 11, and the discharge gap can be broken by current to form a pulse;

[0046] The first end of the closure 13 is in a disc structure, one end of the inner electrode 11 and the outer electrode 12 close to the first end of the closure 13 is in an arc structure, and the first end of both can pass through the closure 13, specifically, the first end of the closure 13 is clamped between the inner electrode 11 and the outer electrode 12, and the first end of the closure 13 is also arranged around the outer periphery of the outer electrode 12, and the closure 13 is in contact with the outer periphery of the inner electrode 11 and the outer periphery of the outer electrode 12 respectively.

[0047] In this embodiment, the first end of the inner electrode 11 and the first end of the outer electrode 12 are both arc structures that protrude from the end face of the sealing member 13.

[0048] It is understood that the first end of the closure 13 is a disc-shaped structure, and the width of the inner electrode 11 and the outer electrode 12 is smaller than the thickness of the first end of the closure 13, so that the inner electrode 11 and the outer electrode 12 can be placed inside the first end of the closure 13; the second end of the closure 13 is a sleeve structure.

[0049] In this embodiment, the first and second ends of the closure 13 are integrally molded structures, specifically overmolded structures. This refers to a process where one material is coated onto the surface or interior of another material using injection molding to form a multi-layered structure. The basic principle is to coat one material (substrate) onto the surface or interior of another material (covering material) using injection molding. The substrate is typically a rigid plastic, such as ABS, PA6 / PA66-GF, PP, PC, PC+ABS, etc., while the covering material is mostly an elastic resin, such as synthetic rubber, TPU, TPR, TPE, soft PVC, etc.

[0050] In this embodiment, the end of the inner electrode 11 closest to the first end of the closure member 13 is the first end of the inner electrode 11, and the end of the outer electrode 12 closest to the first end of the closure member 13 is the first end of the outer electrode 12. Therefore, the first ends of the inner electrode 11, the outer electrode 12, and the closure member 13 are all the same end of the pulse ablation device 100. It is understood that the first ends of the inner electrode 11 and the outer electrode 12 each have a tissue-adhering functional surface, which can be used to adhere to oral lesion tissue.

[0051] The treatment principle of the pulse ablation device 100 in this application will be described in detail below: The external electrode 12 and the internal electrode 11 form an electrode pair, which emits pulses with a width of microseconds to the oral lesion tissue. The pulses will disrupt the stability of the cell membrane surface of the lesion tissue, causing multiple hydrophilic micropores to appear. The formation of micropores will disrupt the cell homeostasis, leading to loss of cell function. Ultimately, the lesion tissue cells will die, thereby achieving the purpose of ablation treatment.

[0052] Understandably, pulses with microsecond-level widths possess high energy density, capable of instantly disrupting cell membranes and creating micropores. However, different types of cell membranes exhibit varying sensitivities to pulse energy; that is, the cell membranes of diseased tissue cells are typically more easily damaged than those of normal cells. Therefore, by controlling the pulse energy level, the degree of damage to the cell membrane can be modulated, thereby achieving precise ablation of oral lesions.

[0053] Therefore, the pulse ablation device 100 in the present application adopts the above treatment principle. Different oral tissue cells have different damage thresholds, so the pulse can be accurately applied to the diseased tissue cells by controlling the pulse energy, without damaging the surrounding normal cells. Moreover, by adjusting the pulse energy, precise ablation of the diseased tissue can be achieved, avoiding damage to the surrounding tissue. In addition, pulse ablation is a minimally invasive treatment method, with fast postoperative recovery and fewer complications. Therefore, the pulse ablation device 100 in the present application can precisely act on the diseased tissue cells by emitting pulses with a width of microseconds, destroy the cell membranes, and ultimately cause cell death, so as to achieve the purpose of ablation treatment. This technology has tissue cell selectivity, can precisely treat diseased tissue, and avoid damage to surrounding normal tissue, and is a minimally invasive and efficient treatment method.

[0054] It can be understood that the above-mentioned tip discharge phenomenon refers to the fact that the tip shape of the electrode can concentrate the electric field strength at the tip. Specifically, near the electrode tip, the density of electric field lines increases, and the electric field strength increases, because the curvature radius of the electrode tip is relatively small, so that the electric field lines are concentrated around the tip, thereby causing the electric field strength to increase, and ultimately causing the potential difference around the electrode tip to increase, causing the local electric field strength to continue to increase.

[0055] Therefore, the pulse ablation device 100 with the above structure is adopted in the present application. The tip edge of the inner electrode 11 and the tip edge of the outer electrode 12 are not directly exposed to the outside by the wrapping effect of the closure member 13 on the inner electrode 11 and the outer electrode 12, reducing the electric field strength at the electrode tip and eliminating the occurrence of tip discharge phenomenon. Moreover, the connection between the electrode and the closure member 13 is designed to be a snug connection, so that the exposed electrode is arranged in an arc-shaped structure to ensure that the closure member 13 and the electrode are connected in a smooth and snug manner. Thus, the arc-shaped structure is used to disperse the electric field and reduce the concentration of electric field strength at a single point, thereby reducing the possibility of tip discharge. In addition, such arrangement not only protects the inner electrode 11 and the outer electrode 12, reduces the opportunity for the tip edge of the inner electrode 11 and the tip edge of the outer electrode 12 to contact the oral diseased tissue, and prevents the patient from being injured during the operation, but also plays a role in fixing the inner electrode 11 and the outer electrode 12, preventing the inner electrode 11 and the outer electrode 12 from shifting, and ensuring that the inner electrode 11 and the outer electrode 12 can stably emit pulse energy.

[0056] As Figure 1 and Figures 4-5As shown, the outer electrode 12 has a ring-shaped structure, and the inner electrode 11 has a circular structure, with the inner electrode 11 and the outer electrode 12 arranged concentrically. This arrangement ensures a more uniform distribution of pulse energy in the oral cavity lesion tissue, helps avoid energy concentration in specific areas, reduces damage to surrounding normal tissues, improves the safety of the pulse ablation device 100, and reduces the risk of postoperative complications and side effects.

[0057] like Figure 6 The side view of the pulse ablation device 100 shown indicates that the inner electrode 11 protrudes at the same height relative to the end face of the closure member 13 as the outer electrode 12. By placing the contact surfaces of the inner electrode 11 and the outer electrode 12 with the oral lesion tissue on the same horizontal plane, it helps ensure that the inner electrode 11 and the outer electrode 12 can simultaneously contact the oral lesion tissue, thereby improving the transmission efficiency of pulse energy. Furthermore, the synchronous protrusion design simplifies the operation process, eliminating the need for doctors to adjust the height difference between the electrode pairs and making it easier to control the distribution and intensity of pulse energy.

[0058] Meanwhile, the surface area of ​​the first end of the inner electrode 11 is the same as that of the first end of the outer electrode 12, so as to achieve uniform distribution of pulse energy in the oral lesion tissue, avoid energy concentration in a specific area, and improve the treatment effect.

[0059] like Figures 3-5 as well as Figures 11-12 As shown, the pulse ablation device 100 of this application also includes a circuit board 14, which is disposed inside the first end of the closure 13. The inner electrode 11 and the outer electrode 12 are both fixedly disposed on the circuit board 14. A wire 15 is connected to the side of the circuit board 14 away from the first end of the closure 13. The inner electrode 11 and the outer electrode 12 can be electrically connected to the wire 15.

[0060] In this embodiment, the outer electrode 12 and the inner electrode 11 are first soldered onto the conductive structure 143 on one side of the circuit board 14, and then the wire 15 is connected to the conductive structure 143 on the other side of the circuit board 14. Finally, the sealing member 13 is fused together by the overmolding process, thus avoiding the use of glue.

[0061] In this embodiment, both the inner electrode 11 and the outer electrode 12 are made of metallic materials.

[0062] In this embodiment, the circuit board 14 is a flexible printed circuit board (FPC), which is a highly reliable and extremely flexible printed circuit board made of polyimide or polyester film as a substrate. It features high wiring density, light weight, thin thickness, and good bending properties.

[0063] Therefore, by integrating the inner electrode 11, outer electrode 12, and wire 15 into the circuit board 14, the connection process between the electrode pair and the external power supply or control system is simplified. This also makes the overall structure of the pulse ablation device 100 more compact, facilitating its entry and exit from the patient's oral cavity and improving the convenience of treatment. Furthermore, fixing the inner electrode 11 and outer electrode 12 through the circuit board 14 ensures the stability of the electrode pair's position, reducing electrode displacement during operation. The circuit board 14 also provides an optimized signal path, reducing signal loss during transmission and improving the transmission efficiency and accuracy of the pulse signal, thereby enhancing the precision and reliability of the treatment.

[0064] Specifically, such as Figures 8-12 As shown, the inner electrode 11 is provided with an inner electrode fixing member 111 at one end near the circuit board 14, and the circuit board 14 is provided with an inner electrode insertion hole 141 corresponding to the inner electrode fixing member 111, so that the inner electrode 11 can be fixedly connected to the circuit board 14 by inserting the inner electrode fixing member 111 into the inner electrode insertion hole 141.

[0065] Similarly, an external electrode fixing member 121 is provided at one end of the external electrode 12 near the circuit board 14, and an external electrode socket 142 corresponding to the external electrode fixing member 121 is provided on the circuit board 14, so that the external electrode 12 can be fixedly connected to the circuit board 14 by inserting the external electrode fixing member 121 into the external electrode socket 142.

[0066] It is understood that the inner electrode 11 has an inner electrode body 1113 at its first end and an inner electrode fixing member 111 at its second end, and the inner electrode body 1113 and the inner electrode fixing member 111 are integrally formed; the outer electrode 12 has an outer electrode body 1213 at its first end and an outer electrode fixing member 121 at its second end, and the outer electrode body 1213 and the outer electrode fixing member 121 are integrally formed.

[0067] In this embodiment of the application, there are multiple inner electrode fixing members 111. The multiple inner electrode fixing members 111 are all disposed on the outer edge of the inner electrode body 1113 and are arranged sequentially at intervals along the outer periphery of the inner electrode body 1113. At the same time, each inner electrode fixing member 111 extends toward the side of the circuit board 14.

[0068] Since the outer electrode 12 has a ring-shaped structure, the outer electrode body 1213 includes an inner edge and an outer edge. The number of outer electrode fixing members 121 provided on the inner edge and the outer edge is multiple. That is, multiple outer electrode fixing members 121 are arranged sequentially and spaced along the outer periphery of the outer electrode body 1213 on the inner edge and the outer edge. At the same time, each outer electrode fixing member 121 extends toward one side of the circuit board 14.

[0069] In the embodiments of the present application, the inner electrode fixing member 111 and the inner electrode insertion hole 141 are adapted to each other in that the cross-sectional shape of the inner electrode fixing member 111 is the same as the shape of the inner electrode insertion hole 141; the outer electrode fixing member 121 and the outer electrode insertion hole 142 are adapted to each other in that the cross-sectional shape of the outer electrode fixing member 121 is the same as the shape of the outer electrode insertion hole 142.

[0070] Further, the inner electrode fixing member 111 comprises an inner electrode abutting segment 1111 and an inner electrode embedding segment 1112, the cross-sectional size of the inner electrode embedding segment 1112 is adapted to the cross-sectional size of the inner electrode insertion hole 141, the inner electrode embedding segment 1112 can be embedded into the inner electrode insertion hole 141, the cross-sectional size of the inner electrode abutting segment 1111 is larger than the cross-sectional size of the inner electrode insertion hole 141, and the inner electrode 11 can abut on the circuit board 14 through the inner electrode abutting segment 1111;

[0071] The outer electrode fixing member 121 comprises an outer electrode abutting segment 1211 and an outer electrode embedding segment 1212, the cross-sectional size of the outer electrode embedding segment 1212 is adapted to the cross-sectional size of the outer electrode insertion hole 142, the outer electrode embedding segment 1212 can be embedded into the outer electrode insertion hole 142, the cross-sectional size of the outer electrode abutting segment 1211 is larger than the cross-sectional size of the outer electrode insertion hole 142, and the outer electrode 12 can abut on the circuit board 14 through the outer electrode abutting segment 1211.

[0072] By adapting the cross-sectional size of the inner electrode embedding segment 1112 and the outer electrode embedding segment 1212 to the respective inner electrode insertion hole 141 and outer electrode insertion hole 142, it is ensured that the inner electrode 11 and the outer electrode 12 can be accurately embedded into the respective insertion holes, and the abutting segments, due to their larger size, enable the electrode pair to stably abut on the circuit board 14, thereby achieving accurate alignment and fixation of the electrode pair.

[0073] Preferably, the inner electrode fixing member 111 and the outer electrode fixing member 121 are both in a sheet-like structure. Since the sheet-like fixing member is generally thin, it is more helpful to reduce the overall size of the pulse ablation device 100, so that the pulse ablation device 100 is more compact and is convenient to use in a narrow space such as the oral cavity; and the sheet-like structure is helpful to heat conduction between the electrodes and the circuit board 14, and is helpful to heat dissipation to prevent the electrodes from overheating due to long-time work; in addition, the sheet-like fixing member can be installed and disassembled by insertion and extraction, which simplifies the process of repairing and replacing the electrodes.

[0074] Therefore, by the design of the inner electrode fixing member 111, the outer electrode fixing member 121 and the corresponding insertion hole, the connection process of the electrode pair and the circuit board 14 can be simplified, so that the electrodes can be fixed on the circuit board 14 through a simple embedding operation, facilitating assembly and future maintenance or replacement. In addition, the design of the fixing member and the insertion hole provides a firm mechanical connection, ensuring that it will not loosen during treatment, thereby maintaining the stability of the electrode position.

[0075] In addition, as shown in Figure 2 The pulse ablation device 100 further comprises a handle 16 connected with the closure 13, specifically, the handle 16 is connected with the closure 13 at an end away from the first end of the closure 13. The handle 16 is provided with a through hole 161 at an end away from the closure 13, and the through hole 161 is used for the lead wire 15 to pass through.

[0076] In the embodiment of the present application, the handle 16 comprises a connecting section 162, a transition section 163 and a hand-holding section 164, wherein the connecting section 162 is connected with the closure 13, the transition section 163 is arranged between the connecting section 162 and the hand-holding section 164, and the hand-holding section 164 is used for the operator to hold, so as to facilitate accurate and convenient treatment operation. Preferably, the connecting section 162 and the hand-holding section 164 are both straight sections connected through the transition section 163, and the handle 16 is an integrally formed structure.

[0077] The angle between the axis of the connecting section 162 and the axis of the hand-holding section 164 is in the range of 150°-170°, so as to facilitate the pulse ablation device 100 to better enter the patient's oral cavity, and such arrangement also takes into account ergonomics, so that the operator feels more comfortable when using, reducing fatigue caused by long-time operation.

[0078] In the embodiment of the present application, the cross-sectional dimensions of the connecting section 162, the transition section 163 and the hand-holding section 164 are consistent along the extension axis of the handle 16, so as to facilitate the operator to hold at different positions of the handle 16.

[0079] In the embodiment of the present application, the handle 16 comprises a first shell 165 and a second shell 166, which are arranged in mirror symmetry and can be clamped at the connection to accommodate the lead wire 15 in the cavity formed by the first shell 165 and the second shell 166.

[0080] As shown in Figures 3-5 and Figures 13-14 The pulse ablation device 100 further comprises a limiting member 17;

[0081] One end of the limiting member 17 is located inside the closure 13 and connected with the circuit board 14, and the limiting member 17 is provided with a first limiting hole 171 for the lead wire 15 to pass through;

[0082] The other end of the limiting piece 17 is located inside the handle 16, and a second limiting hole 172 for the wire 15 to pass through is arranged on the limiting piece 17, and a limiting groove 173 in communication with the first limiting hole 171 and the second limiting hole 172 is arranged on the limiting piece 17, and the limiting groove 173 is used for accommodating the wire 15.

[0083] In the embodiment of the present application, the limiting piece 17 comprises a limiting piece disc body 174 and a limiting piece guide segment 175, the limiting piece disc body 174 is a disc structure, arranged at the first end of the closure 13, and the limiting piece 17 is located at the side of the circuit board 14 away from the inner electrode body 1113 and the outer electrode body 1213; the limiting piece 17 is an integral molding structure, and the limiting piece guide segment 175 is a curve segment with the same bending degree as the handle 16, so that the limiting piece 17 can be better accommodated in the handle 16.

[0084] It can be understood that the first limiting hole 171 is located at the central axis of the limiting piece disc body 174, and the limiting groove 173 is arranged in the direction of the central axis of the limiting piece disc body 174 and extends towards the direction of the through hole 161 of the handle 16.

[0085] In the embodiment of the present application, after the inner electrode 11 and the outer electrode 12 are welded on the circuit board 14, and the wire 15 is welded on the circuit board 14, the whole is fixed on the limiting piece 17, so that the wire 15 passes through the limiting groove 173, and then the first shell 165 and the second shell 166 of the handle 16 are clamped on the outer peripheral side of the limiting piece 17, and finally the limiting piece disc body 174 and the circuit board 14 are overmolded to form the closure 13.

[0086] It can be understood that the thickness of the closure 13 is equal to the sum of the thickness of the inner electrode 11 (the thickness of the outer electrode 12), the thickness of the circuit board 14 and the thickness of the limiting piece disc body 174, so that the overall thickness of the pulse ablation device 100 can be reduced, and the treatment operation in the patient's oral cavity can be facilitated.

[0087] Therefore, through the arrangement of the limiting groove 173, not only can the wire 15 be prevented from moving or bending excessively during the operation process, and the wire 15 can be protected from damage, but also the wire 15 can be limited to the required position during the treatment operation; in addition, the design of the limiting groove 173 and the limiting hole can also arrange the wire 15, keep the wire 15 inside the handle 16 neat, and avoid the wire 15 being in disorder.

[0088] The above description has fully disclosed the specific embodiments of the present application. It should be pointed out that any modification of the specific embodiments of the present application by those skilled in the art does not deviate from the scope of the claims of the present application. Accordingly, the scope of the claims of the present application is not limited to the foregoing specific embodiments.

Claims

1. A pulse ablation device, applied to oral lesions, characterized in that, It comprises: an inner electrode; an outer electrode, which is annular in structure, surrounds the outer circumferential side of the inner electrode, and forms an electrode pair with the inner electrode to enable the emission of pulses to the oral lesion tissue; a closure, which is disc-shaped in structure at a first end thereof, and is arc-shaped at an end thereof close to the first end of the closure, and is capable of being passed through the closure, and is fitted to the outer circumferential side of the inner electrode and the outer circumferential side of the outer electrode, respectively.

2. The pulsed ablation device of claim 1, wherein, The protruding height of the inner electrode relative to the end face of the closure is the same as the protruding height of the outer electrode relative to the end face of the closure. And / or, the surface area of the end of the inner electrode close to the first end of the closure is the same as the surface area of the end of the outer electrode close to the first end of the closure.

3. The pulsed ablation device of claim 1, wherein, The pulse ablation device further comprises a circuit board, which is arranged inside the first end of the closure, and the inner electrode and the outer electrode are fixedly arranged on the circuit board, and a lead wire is connected to the side of the circuit board away from the first end of the closure, and the inner electrode and the outer electrode are capable of being electrically connected to the lead wire.

4. The pulsed ablation device of claim 3, wherein, The end of the inner electrode close to the circuit board is provided with an inner electrode fixing member, and the circuit board is provided with an inner electrode insertion hole corresponding to the inner electrode fixing member, and the inner electrode is fixedly connected to the circuit board by being embedded into the inner electrode insertion hole through the inner electrode fixing member; The end of the outer electrode close to the circuit board is provided with an outer electrode fixing member, and the circuit board is provided with an outer electrode insertion hole corresponding to the outer electrode fixing member, and the outer electrode is fixedly connected to the circuit board by being embedded into the outer electrode insertion hole through the outer electrode fixing member.

5. The pulsed ablation device of claim 4, wherein, The inner electrode fixing member and / or the outer electrode fixing member is in the form of a sheet.

6. The pulsed ablation device of claim 4 or 5, wherein, The inner electrode fixing member comprises an inner electrode abutting section and an inner electrode embedding section, the cross-sectional dimension of the inner electrode insertion hole is adapted to the cross-sectional dimension of the inner electrode embedding section, the inner electrode embedding section can be embedded into the inner electrode insertion hole, the cross-sectional dimension of the inner electrode abutting section is greater than the cross-sectional dimension of the inner electrode insertion hole, and the inner electrode can abut on the circuit board through the inner electrode abutting section; The outer electrode fixing member comprises an outer electrode abutting section and an outer electrode embedding section, the cross-sectional dimension of the outer electrode insertion hole is adapted to the cross-sectional dimension of the outer electrode embedding section, the outer electrode embedding section can be embedded into the outer electrode insertion hole, the cross-sectional dimension of the outer electrode abutting section is greater than the cross-sectional dimension of the outer electrode insertion hole, and the outer electrode can abut on the circuit board through the outer electrode abutting section.

7. The pulsed ablation device of claim 3, wherein, The pulse ablation device further comprises a handle, which is connected to the closure, and the end of the handle away from the closure is provided with a through hole for the lead wire to pass through.

8. The pulsed ablation device of claim 7, wherein, The pulse ablation device further comprises a limiting member, One end of the limiting member is located inside the closure and connected to the circuit board, and the limiting member is provided with a first limiting hole for the lead wire to pass through. The other end of the limiting piece is located in the interior of the handle, a second limiting hole for the wire to pass through is arranged on the limiting piece, and a limiting groove in communication with the first limiting hole and the second limiting hole is arranged on the limiting piece, and the limiting groove is used for accommodating the wire.

9. The pulsed ablation device of claim 4, wherein, The closing piece is a glue encapsulation forming structure.

10. The pulsed ablation device of claim 1, wherein, The outer electrode is a ring structure, and the inner electrode is a circular structure. The inner electrode and the outer electrode are concentrically arranged.

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