WO2022148159A1

WO2022148159A1 - Electrode assembly, ablation device and radiofrequency ablation apparatus

Info

Publication number: WO2022148159A1
Application number: PCT/CN2021/132424
Authority: WO
Inventors: 马志伟; 马帅; 王宇; 周庆亮; 申佳佳; 孟坚
Original assignee: 北京迈迪顶峰医疗科技股份有限公司
Priority date: 2021-01-08
Filing date: 2021-11-23
Publication date: 2022-07-14

Abstract

An electrode assembly, an ablation device and a radiofrequency ablation apparatus. The electrode assembly comprises a first electrode tip (110), wherein the first electrode tip (110) comprises a first protective sheath (113), and a first electrode (111) and a filling member (116), which are arranged inside the first protective sheath (113), the first electrode (111) is pressed by the filling member (116) so as to move the first electrode (111) towards tissue (340) to be ablated, then the first electrode (111) can be attached to an inner wall of the first protective sheath (113), and an outer wall of the first protective sheath (113) at the corresponding position is attached to the corresponding tissue (340) to be ablated, such that it is guaranteed that the first electrode (111) can successfully act on the corresponding tissue (340) to be ablated, and an ablation effect is guaranteed. By means of a first electrode (111), the problems in the prior art of an ablation device not being firmly attached to tissue (340) to be ablated, the tissue (340) to be ablated being prone to disengaging, and an ablation effect not being ideal can be solved.

Description

Electrode assemblies, ablation devices, and radiofrequency ablation devices

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure is based on a Chinese patent application with an application number of 202110026567.6, an application date of January 8, 2021, and a public name of "electrode assembly, ablation device and radiofrequency ablation device" and an application number of 202120046531.X, and the application date of 2021. On January 8, a Chinese patent application entitled "Ablation Device and Radio Frequency Ablation Apparatus" was published as the basis and claimed priority, the disclosure of which is hereby incorporated into the present disclosure in its entirety.

technical field

The present disclosure relates to the field of medical devices, and in particular, to an electrode assembly, an ablation device, and a radiofrequency ablation device.

Background technique

Ablation is a common measure for the treatment of atrial fibrillation. The principle is to create one or more ablation lines in the heart tissue, causing tissue necrosis and cutting off abnormal electrical signal conduction for the treatment of atrial fibrillation.

The current ablation treatment is divided into surgical ablation and medical interventional ablation. Surgical ablation is characterized by excellent curative effect and low postoperative recurrence rate, but its obvious shortcomings are large trauma and slow postoperative recovery. Medical interventional ablation is favored by more and more patients because of its small trauma and fast recovery, but medical ablation is point ablation, and its biggest drawback is that it is difficult to form a complete ablation line; Wall work, the ablation depth is limited, and it is difficult to ensure complete dehydration and degeneration of the tissue from the inside to the outside. During the operation, the ablation power is small and the ablation is not complete, but the power is high and it is difficult to control. There are excessive ablation tissue necrosis or even burning through and burning leakage. Therefore, the success rate of medical interventional ablation is much lower than that of surgery.

SUMMARY OF THE INVENTION

The main purpose of the present disclosure is to provide an electrode assembly, an ablation device and a radio frequency ablation device, so as to solve the problems in the prior art that the ablation device is not firmly attached to the tissue to be ablated, the tissue to be ablated is easily detached, and the ablation effect is not ideal .

A first aspect of the present disclosure provides an electrode assembly, including a first electrode tip, the first electrode tip comprising: a first protective sheath; and a first electrode, the first electrode is disposed in the first protective sheath ; a filling piece, the filling piece is arranged in the first protective sheath, so as to press the first electrode in the first protective sheath towards the tissue to be ablated through the filling piece.

In the electrode assembly of some embodiments, there are a plurality of the first electrodes, the first protective sheath is strip-shaped, and the plurality of the first electrodes are arranged at intervals along the extending direction of the first protective sheath.

In the electrode assembly of some embodiments, the filler is in the shape of a bar, the first protective sheath is in the shape of a bar, and the filler extends along the extending direction of the first protective sheath.

In the electrode assembly of some embodiments, there are a plurality of the fillers, the first protective sheath is strip-shaped, and the plurality of the fillers are arranged at intervals along the extending direction of the first protective sheath.

In the electrode assembly of some embodiments, a plurality of the fillers and a plurality of the first electrodes are arranged in a one-to-one correspondence, and each of the fillers is arranged at a distance from the corresponding first electrode away from the to-be-ablated electrode. side of the tissue.

In the electrode assembly of some embodiments, the energization circuits of the plurality of first electrodes are provided independently, so as to individually control each of the first electrodes.

In the electrode assembly of some embodiments, the ventilation lines of the plurality of fillers are independently provided, so as to individually control the inflation state of each of the fillers.

In the electrode assembly of some embodiments, the filler is a balloon structure or the filler is a flexible block.

In the electrode assembly of some embodiments, the first protective sheath is provided with an opening structure for avoiding the first electrode, so that part of the structure of the first electrode can pass through the opening structure from the first electrode. The lumen of a protective sheath protrudes.

In the electrode assembly of some embodiments, there are a plurality of the first electrodes, the opening structure includes a plurality of avoidance holes, and the plurality of avoidance holes are provided in a one-to-one correspondence with the plurality of the first electrodes , so that part of the structure of each of the first electrodes protrudes to the outside of the first protective sheath through the corresponding avoidance holes.

In the electrode assembly of some embodiments, there are a plurality of the first electrodes, the opening structure is a strip-shaped opening, and the strip-shaped openings are spaced along the extending direction of the first protective sheath, and a plurality of the first electrodes are formed. A part of the structure of an electrode protrudes to the outside of the first protective sheath through the strip-shaped opening.

A second aspect of the present disclosure provides an ablation device, including a first electrode assembly and a second electrode assembly, wherein the first electrode assembly is the electrode assembly described in the first aspect of the disclosure, and the second electrode assembly includes a first electrode assembly. Two-electrode terminal, the second electrode terminal includes a second electrode, and the second electrode is disposed opposite to the first electrode so as to be located on the first electrode through the pair of the first electrode and the second electrode The tissue to be ablated between the electrode and the second electrode is ablated.

In the ablation device of some embodiments, the second electrode tip includes a second protective sheath, the second electrodes are multiple, and the plurality of second electrodes are sheathed on the second protective sheath; wherein , a plurality of the first electrodes and a plurality of the second electrodes are arranged in cooperation with each other.

In the ablation device of some embodiments, the ablation device further comprises: an ablation circuit, on which the first electrode and the second electrode are both disposed, so as to pass the test of the first electrode and the corresponding The impedance between the second electrodes modulates the radio frequency energy between the first electrode and the second electrode for ablation.

A third aspect of the present disclosure further provides a radio frequency ablation device, comprising a radio frequency host and an ablation device connected to the radio frequency host, wherein the ablation device is the ablation device described in the second aspect of the present disclosure.

Applying the technical solution of the present disclosure, the electrode assembly includes a first electrode tip, the first electrode tip includes a first protective sheath, a first electrode and a filling member disposed in the first protective sheath, and the first electrode is connected to the first electrode through the filling member. Squeeze to move the first electrode toward the tissue to be ablated, so that the first electrode can fit with the inner wall of the first protective sheath, and the outer wall of the first protective sheath at the corresponding position fits with the corresponding tissue to be ablated , so as to ensure that the first electrode can better act on the corresponding tissue to be ablated and ensure the ablation effect; it can be seen that the use of this electrode assembly can solve the problem that the ablation device in the prior art is not firmly attached to the tissue to be ablated, and it is easy to disengage the tissue to be ablated. Ablation of tissue and the problem of unsatisfactory ablation effect.

Description of drawings

The accompanying drawings that constitute a part of the present disclosure are used to provide further understanding of the present disclosure, and the exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the attached image:

FIG. 1 shows a schematic structural diagram of an optional electrode assembly (first electrode assembly) according to the present disclosure;

FIG. 2 shows a longitudinal cross-sectional structural view of the first electrode assembly in FIG. 1;

Fig. 3 is a schematic diagram showing a structural arrangement of the first electrode assembly in Fig. 1 with shielding side eaves;

FIG. 4 is a schematic diagram showing another structural arrangement of the first electrode assembly in FIG. 1 with shielding side eaves;

FIG. 5 shows a schematic diagram of the structural arrangement of the first electrode assembly in FIG. 1 with wire laying grooves;

6 shows a cross-sectional view of another embodiment of a first electrode assembly according to the present disclosure;

FIG. 7 shows a schematic structural diagram of a second electrode assembly of an optional ablation device according to the present disclosure;

FIG. 8 shows a partial enlarged view of the second electrode assembly of the ablation device of FIG. 7;

FIG. 9 shows an enlarged view of part A of the second electrode assembly of the ablation device of FIG. 8;

FIG. 10 shows a schematic structural diagram of a radio frequency host of an optional radio frequency ablation device according to the present disclosure;

FIG. 11 shows an assembly diagram between a radio frequency host and an ablation device of an optional radio frequency ablation device according to the present disclosure;

FIG. 12 shows a schematic diagram of the ablation device in the present disclosure when the tissue to be ablated is ablated;

13 shows a diagram of the cooperation between the first electrode and the second electrode and the tissue to be ablated in an embodiment of the ablation device in the present disclosure;

FIG. 14 shows a schematic diagram of ablation in one state of the ablation device of the present disclosure;

FIG. 15 shows an ablation schematic diagram of another state of the ablation device of the present disclosure;

FIG. 16 shows a schematic diagram of the wiring between the radio frequency host and the first electrode assembly and the second electrode assembly of the radio frequency ablation device of the present disclosure;

FIG. 17 shows a schematic structural diagram of the second embodiment of the first electrode assembly of the ablation device of the present disclosure;

FIG. 18 shows a schematic structural diagram of the second embodiment of the second electrode assembly of the ablation device of the present disclosure;

FIG. 19 shows a diagram of the cooperation between the first electrode and the second electrode and the tissue to be ablated in another embodiment of the ablation device of the present disclosure.

Wherein, the above-mentioned drawings include the following reference signs:

100. A first electrode assembly;

110, the first electrode tip; 111, the first electrode; 1110, the electrode surface; 1112, the cooling hole; 112, the first magnetic part; 113, the first protective sheath; 1130, the protective sheath surface; 116, filler; 118, wire;

120. Conductor laying groove;

200. A second electrode assembly;

210, the second electrode tip; 211, the second electrode; 212, the second magnetic member; 213, the developing member; 214, the second protective sheath;

310, radio frequency host; 311, ablation interface; 312, electromagnetic interface; 313, display screen; 320, ablation circuit; 330, ablation range; 340, tissue to be ablated.

Detailed ways

It should be noted that the embodiments of the present disclosure and the features of the embodiments may be combined with each other under the condition of no conflict. The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

The present disclosure provides an electrode assembly, please refer to FIG. 1 to FIG. 19 , the electrode assembly includes a first electrode tip 110 , the first electrode tip 110 includes a first protective sheath 113 , a first electrode 111 and a filler 116 , The first electrode 111 is disposed in the first protective sheath 113 ; the filling member 116 is disposed in the first protective sheath 113 , so that the first electrode 111 in the first protective sheath 113 is pressed toward the tissue to be ablated by the filling member 116 .

In the electrode assembly of the present disclosure, the electrode assembly includes a first electrode tip 110, the first electrode tip 110 includes a first protective sheath 113, and a first electrode 111 and a filler 116 disposed in the first protective sheath 113, The first electrode 111 is squeezed by the filler 116 to move the first electrode 111 toward the tissue to be ablated, so that the first electrode 111 can fit with the inner wall of the first protective sheath 113, and the first electrode 111 at the corresponding position The outer wall of the protective sheath 113 is attached to the corresponding tissue to be ablated, so as to ensure that the first electrode 111 can better act on the corresponding tissue to be ablated and ensure the ablation effect; it can be seen that the use of this electrode assembly can solve the problems of internal medicine in the prior art. The problem of unsatisfactory ablation effect of interventional ablation device.

Optionally, there are multiple first electrodes 111 , the first protective sheath 113 is strip-shaped, and the multiple first electrodes 111 are arranged at intervals along the extending direction of the first protective sheath 113 ; that is, the multiple first electrodes 111 act on the The corresponding tissue to be ablated to form a complete ablation line, ensuring ablation effect and improving ablation efficiency; and arranging a plurality of first electrodes 111 at intervals can avoid mutual influence between two adjacent first electrodes 111 .

Optionally, the first protective sheath 113 is tubular, and the plurality of first electrodes 111 are disposed in the lumen of the first protective sheath 113 .

In this embodiment, there are 5 to 10 first electrodes 111 .

In this embodiment, an arrangement of the filling member 116 is as follows: as shown in FIG. Optionally, the filler 116 is an airbag structure, so as to form a pressing effect on the plurality of first electrodes 111 when the airbag structure is inflated and expanded.

In this embodiment, another arrangement of the fillers 116 is as follows: there are multiple fillers 116 , and the multiple fillers 116 are arranged at intervals along the extending direction of the first protective sheath 113 ; the multiple fillers 116 and the multiple The electrodes 111 are arranged in a one-to-one correspondence, so that each filling member 116 can form a pressing effect on the corresponding first electrode 111; each filling member 116 is arranged on the side of the corresponding first electrode 111 away from the tissue to be ablated, In order to realize that each filler 116 has a pressing effect on the corresponding first electrode 111 , each first electrode 111 moves toward the direction of approaching the corresponding tissue to be ablated. Optionally, each filling member 116 is an airbag structure, so that when the airbag structure is inflated and inflated, a pressing effect is formed on the corresponding first electrode 111 .

In some embodiments, the energization circuits of the plurality of first electrodes 111 are independently set to individually control each of the first electrodes 111 .

In some embodiments, the energization circuits of two adjacent first electrodes are independently arranged to form an ablation electrode pair to achieve an ablation function.

In some embodiments, the ventilation lines of the plurality of fillers 116 are provided independently to individually control the inflation state of each filler 116 .

Optionally, the first protective sheath 113 is provided with an opening structure for avoiding the first electrode 111, so that part of the structure of the first electrode 111 is protruded from the cavity of the first protective sheath 113 through the opening structure, so that, This part of the electrode structure extending out of the cavity of the first protective sheath 113 can be in direct contact with the corresponding tissue to be ablated, so that this part of the electrode structure can better act on the corresponding tissue to be ablated, so as to further ensure the ablation effect and improve the Ablation efficiency.

In this embodiment, a setting form of the opening structure is: when there are multiple first electrodes 111 , the opening structure includes multiple avoidance openings, and the multiple avoidance openings correspond to the multiple first electrodes 111 one-to-one so that the part of the structure of each first electrode 111 protrudes to the outside of the first protective sheath 113 through the corresponding avoidance holes, so that the part of the structure of each first electrode 111 protruding from the outside of the first protective sheath 113 is Direct contact with the corresponding tissue to be ablated is possible.

In this embodiment, another setting form of the opening structure is as follows: the opening structure is a strip-shaped opening, the strip-shaped openings are spaced along the extending direction of the first protective sheath 113 , and the partial structures of the plurality of first electrodes 111 pass through the strips. The shaped opening protrudes to the outside of the first protective sheath 113 .

The present disclosure also provides an ablation device, the ablation device includes a first electrode assembly 100 and a second electrode assembly 200, the first electrode assembly 100 is the above-mentioned electrode assembly, and the first electrode of the first electrode assembly 100 is the first electrode 111, that is, the first electrode end of the first electrode assembly 100 is the first electrode end 110, the second electrode assembly 200 includes the second electrode end 210, the second electrode end 210 includes the second electrode 211, the second electrode The 211 is disposed opposite to the first electrode 111 to ablate the tissue to be ablated between the first electrode 111 and the second electrode 211 through the first electrode 111 and the second electrode 211 .

Optionally, the ablation device further includes an ablation circuit 320 on which the first electrode 111 and the second electrode 211 are both disposed, so as to adjust the first electrode 111 and the corresponding second electrode 211 by testing the impedance between the first electrode 111 and the corresponding second electrode 211 . The ablation is performed by radio frequency energy between the electrode 111 and the second electrode 211 .

In some embodiments, the first electrode tip 110 of the first electrode assembly 100 includes a first magnetic member 112 , the second electrode tip 210 includes a second magnetic member 212 , and the first magnetic member 112 and the second magnetic member 212 are in phase with each other. Matching, so that the first electrode end 110 and the second electrode end 210 are relatively fixed.

In some embodiments, the first magnetic member 112 and the second magnetic member 212 are both multiple, the first electrode tip 110 and the second electrode tip 210 are both strip-shaped, and the multiple first magnetic members 112 are along the first The extending direction of the electrode tip 110 is arranged at intervals, and the plurality of second magnetic members 212 are arranged at intervals along the extending direction of the second electrode tip 210 .

In some embodiments, there are multiple first electrodes 111 and second electrodes 211 , multiple first magnetic members 112 and multiple first electrodes 111 are alternately arranged, multiple second magnetic members 212 and multiple second electrodes 111 The electrodes 211 are staggered and spaced apart.

In some embodiments, the adjacent first electrodes 111 and the first magnetic members 112 are provided in insulation, and the adjacent second electrodes 211 and the second magnetic members 212 are provided in insulation.

In some embodiments, the opposite surfaces between the adjacent first electrodes 111 and the first magnetic members 112 are sprayed with insulating paint, or an insulating spacer is provided between the adjacent first electrodes 111 and the first magnetic members 112 The opposite surfaces between the adjacent second electrodes 211 and the second magnetic members 212 are all sprayed with insulating paint, or an insulating separator is provided between the adjacent second electrodes 211 and the second magnetic members 212 . Integrated design of insulating baffle and protective sheath or separate fixed setting.

In some embodiments, the outer surfaces of the first magnetic member 112 and the second magnetic member 212 are covered with insulating layers.

In some embodiments, the first electrode 111 , the first magnetic member 112 , the second electrode 211 and the second magnetic member 212 are all connected to independent energization circuits for individual control.

In some embodiments, there are multiple first electrodes 111, and the energization circuits of the two first electrodes 111 are independently set to form a mapping electrode pair, so as to use the energization circuits to detect the transmission of electrical signals of the tissue to be ablated 340 after ablation; And/or, there are multiple second electrodes 211, and the energization circuits of the two second electrodes 211 are independently set to form a mapping electrode pair, so as to use the energization circuits to detect the electrical signal transmission of the tissue 340 to be ablated after ablation; and/or Alternatively, the energization circuits of the first electrode 111 and the second electrode 211 are independently set to form a mapping electrode pair, so as to use the energization circuit to detect the transmission of electrical signals after the ablation of the tissue 340 to be ablated. During mapping, the polarities of the two first electrodes 111 forming the mapping electrode pair are different, and the voltage across the voltage is set to form a current, thereby realizing mapping; the polarities of the two second electrodes 211 forming the mapping electrode pair are different, The cross-voltage is set to form a current, and then the mapping is realized; the polarities of the first electrode 111 and the second electrode 211 that form the mapping electrode pair are different, and the cross-voltage is set to form a current, and then the mapping is realized.

In use, the first electrode assembly 100 and the second electrode assembly 200 are used as epicardial electrodes and endocardial electrodes, respectively, so that the first electrode assembly 100 and the second electrode assembly 200 act on the epicardium and the heart, respectively membrane to achieve simultaneous epicardium and endocardium ablation for good ablation results. In addition, the ablation device in the present disclosure can realize hybrid ablation of internal and surgical techniques. This technique has little trauma, which solves the problems of large trauma and slow recovery in the prior art for surgical ablation. Simultaneous ablation adjusts the output power by testing the actual impedance between tissues, which is accurate and safe, and the machine alarms when the impedance reaches a certain resistance value to complete the ablation to avoid excessive ablation.

In addition, by arranging the first electrode 111 and the second electrode 211 opposite to each other, the impedance between the first electrode 111 and the second electrode 211 can be tested in real time, and according to the real-time detection of the impedance between the first electrode 111 and the second electrode 211 Impedance to adjust the radio frequency energy between the first electrode 111 and the second electrode 211 for ablation, and after the impedance reaches a certain resistance value, the machine alarms that the ablation is completed, to avoid excessive ablation, to solve the unilateral ablation depth of the interventional ablation in the prior art It is limited and difficult to ensure the complete dehydration and degeneration of the tissue from the inside to the outside. At the same time, it solves the problem that the radio frequency power is not easy to control. Low power will cause incomplete ablation, and excessive power will cause excessive ablation, tissue necrosis or even burn through and leakage. Phenomenon.

During the ablation process, the impedance of the tissue to be ablated between the electrodes changes from low to high; in the first stage of ablation, the impedance of the tissue to be ablated between the electrodes gradually increases, and the RF power remains unchanged to accelerate the intracellular molecules. Vibration; in the second stage of ablation, as the impedance of the ablated tissue between the electrodes increases, the radio frequency power gradually increases, and when the impedance of the ablated tissue between the electrodes increases to its first preset value, the radio frequency power It also increases to its preset maximum value. In this ablation stage, the cells are rapidly dehydrated to produce irreversible changes; in the third stage of ablation, as the impedance of the ablated tissue between the electrodes continues to increase, the RF power gradually increases. It is decreased to ensure the completeness of ablation and prevent the phenomenon of scarring on the tissue surface or damage to the patient caused by the high power output of the radio frequency; until the impedance of the ablated tissue between the electrodes increases to its second preset value, the end of the ablation is prompted.

Optionally, as shown in FIG. 3 and FIG. 8 , there are multiple first electrodes 111 and multiple second electrodes 211, and multiple first electrodes 111 and multiple second electrodes 211 are provided in one-to-one correspondence; The first electrode 111 and the plurality of second electrodes 211 enable the plurality of first electrodes 111 and the plurality of second electrodes 211 to act on their corresponding tissues at the same time, so as to enhance the ablation effect and improve the ablation efficiency. Optionally, the first electrode tip 110 and the second electrode tip 210 are both strip-shaped, the plurality of first electrodes 111 are arranged at intervals along the extending direction of the first electrode tip 110 , and the plurality of second electrodes 211 are arranged along the second The extension directions of the electrode tips 210 are arranged at intervals, and each first electrode 111 and its corresponding second electrodes 211 are arranged in pairs; tissue, so as to form a complete ablation line and ensure the ablation effect; and the plurality of first electrodes 111 are arranged at intervals, and the plurality of second electrodes 211 are arranged at intervals, which can avoid the gap between two adjacent first electrodes 111 and between adjacent two electrodes 111. The second electrodes 211 influence each other.

In this embodiment, the first electrode tip further includes a first magnetic member 112, the second electrode tip 210 includes a second magnetic member 212, and the first magnetic member 112 and the second magnetic member 212 cooperate to make the first The electrode tip 110 and the second electrode tip 210 are relatively fixed, so that the first electrode 111 of the first electrode tip 110 can be disposed opposite to the corresponding second electrode 211 of the second electrode tip 210 .

Optionally, there are multiple first magnetic members 112 and second magnetic members 212 , the multiple first magnetic members 112 are arranged at intervals along the extending direction of the first electrode tip 110 , and the multiple second magnetic members 212 are arranged along the extending direction of the first electrode tip 110 . The extending directions of the electrode terminals 210 are arranged at intervals to ensure the overall fixing effect between the first electrode terminal 110 and the second electrode terminal 210 .

Optionally, each pair of the first magnetic member 112 and the second magnetic member 212 works relatively independently, that is, the number of the magnetic members to work can be determined according to actual needs.

Optionally, the magnetic force of the magnetic piece is controllable and adjustable, a small magnetic force is used in the initial positioning, and a large magnetic force is used in the final positioning, so that the inner and outer two electrode assemblies are flexible in the initial positioning and firm in the final positioning, so as to ensure the electrode assembly. The degree of fit, thereby ensuring the ablation effect.

Optionally, the plurality of first magnetic members 112 are all disposed in the lumen of the protective sheath 113 .

Optionally, the first magnetic member 112 is an electromagnet; and/or the second magnetic member 212 is an electromagnet.

Optionally, the plurality of first magnetic members 112 are all disposed in the first protective sheath 113 , and the plurality of first magnetic members 112 are disposed at intervals along the extending direction of the first protective sheath 113 . Optionally, the plurality of first magnetic members 112 and the plurality of first electrodes 111 are alternately arranged along the extending direction of the protective sheath 113 , so that the plurality of first electrodes 111 are arranged at intervals, that is, each first magnetic member 112 is used to separate the corresponding of the two first electrodes 111 . During operation, each pair of the first magnetic member 112 and the second magnetic member 212 works relatively independently, that is, the number of the magnetic members to work can be determined according to actual needs. The magnetic force of the magnetic parts is controllable and adjustable. A small magnetic force is used in the initial positioning, and a larger magnetic force is used in the final positioning, so that the inner and outer two electrode assemblies are flexible at the initial positioning and firm after the final positioning, so as to ensure the fit of the electrodes. , thereby ensuring the ablation effect.

In the present embodiment, shielding side eaves 115 are provided on opposite sides of the protective sheath 113 to form shielding protection for the plurality of first electrodes 111 and the plurality of first magnetic members 112 inside the protective sheath 113 to avoid During the ablation process, blood in the epicardial tissue enters the area between the first protective sheath 113 and the epicardium, which affects the tightness between the protective sheath 113 and the epicardium, avoiding the first electrode 111 and the second electrode during ablation. The measurement accuracy of the resistance value between 211 affects the ablation effect. In addition, by setting the shielding side eave 115, the tissue fluid outside the ablation line and liquids such as physiological saline can be shielded from entering the ablation site, so as to avoid the measurement accuracy of the resistance value between the first electrode 111 and the second electrode 211 during ablation, thereby affecting the ablation effect.

In this embodiment, an arrangement of the shielding side eave 115 is as follows: as shown in FIG.

In this embodiment, another arrangement of the shielding side eaves 115 is as follows: as shown in FIG. 4 , there are multiple shielding side eaves 115 , and the plurality of shielding side eaves 115 are arranged along the extending direction of the first protective sheath 113 and in sequence stitching.

Optionally, as shown in FIG. 5 , the electrode 111 and/or the first magnetic member 112 is provided with a wire laying groove 120 for accommodating the wire 118, and the wire 118 is used to connect with the electrode 111; or, the wire 118 will be used for laying the wire The wire laying groove 120 is arranged on the inner wall of the first protective sheath 113 .

In this embodiment, as shown in FIGS. 8 and 9 , the second electrode tip 210 includes a second protective sheath 214 , and the second electrode 211 is disposed on the second protective sheath 214 ; wherein the second electrode tip 210 includes The developing member 213, the developing member 213 is disposed on the second protective sheath 214, so as to mark the position of the second electrode end 210 by the developing member 213; and/or, the second electrode 211 is made of a metal developing material, and the metal developing material includes At least one of the following materials: platinum, platinum-based alloy, tantalum, gold-plated beryllium bronze; and/or, the second protective sheath 214 is made of a developing material, and the developing material is made of barium sulfate (BaSO4).

The first electrode assembly 100 includes a plurality of first electrode tips 110 , and the second electrode assembly 200 includes a plurality of second electrode tips 210 .

Referring to FIGS. 12 to 15 , it can be seen that the ablation device in this embodiment ablation principle of the tissue to be ablated 340 , and can reflect the ablation range 330 of the ablation device.

Optionally, the plurality of second magnetic members 212 and the plurality of second electrodes 211 are sleeved on the second protective sheath 214; The extension directions of the protective sheaths are staggered, so that the plurality of second electrodes 211 are arranged at intervals, that is, each second magnetic member 212 is used to separate the corresponding two second electrodes 211 .

Optionally, referring to FIG. 13 and FIG. 19 , the plurality of second magnetic members 212 and the plurality of second electrodes 211 are all annular structures, or have cross-sectional structures such as polygonal, V-shaped, D-shaped, and arched. As shown in FIG. 19 , the cross section of the second electrode 211 is a polygon, for example, a square. In this embodiment, the developing member 213 , the second electrode 211 with a developing function, and the second protective sheath 214 with a developing function can indicate the position of the second electrode assembly 200 when it enters the ablation site. Optionally, the number of the developing members 213 on the second electrode end 210 is 3-6, and the number of the developing members 213 may be set independently or the second electrode 211 may have a developing function. In this embodiment, the outer walls of the developing member 213 and the second protective sheath 214 are flush to prevent damage to the patient during the operation.

In this embodiment, the developing member 213 may be absent, or there may be multiple developing members 213, and the multiple developing members 213 are arranged at intervals along the extending direction of the second protective sheath 214; and/or, the outer surface of the second protective sheath 214 The first surface portion and the second surface portion connected to the first surface portion are formed by dividing into a portion corresponding to the developing member 213. The first surface portion is a concave structure, and the developing member 213 is sleeved on the first surface portion. The developing member 213 The outer surface is flush with the second surface portion or lower than the second surface portion.

During operation, the first electrode assembly 100 is first fixed on the epicardium through the positioning member, then the second electrode assembly 200 enters the heart, and the second electrode assembly 200 is placed in the endocardium through the indication of the developing member 213. At the corresponding part of the electrode assembly 100, the first pair of magnetic parts, the second pair of magnetic parts and the third pair of magnetic parts located at the first electrode end 110 and the second electrode end 210 are turned on synchronously and sequentially. At this time, two sets of electrodes Complete initial positioning. After completing the initial positioning, the two electrode assemblies then turn on the remaining magnetic parts in pairs to complete the final positioning.

Optionally, when the first electrode 111 and the second electrode 211 work, each pair of electrodes is relatively independent, that is, the number of working electrodes can be controlled.

In this embodiment, as shown in FIG. 6 , the first electrode 111 has an electrode surface 1110 facing the tissue to be ablated, and the protective sheath 113 has a protective sheath surface 1130 facing the tissue to be ablated; wherein, the electrode surface 1110 is located on the protective sheath Face 1130 is near the side of the tissue to be ablated.

In this embodiment, there are multiple first electrodes 111, and the multiple first electrodes 111 are arranged at intervals along the extending direction of the first electrode tip 110; between the electrode surfaces 1110 of the multiple first electrodes 111 and the protective sheath surface 1130 The minimum distances are the same. The value range of the minimum distance between the electrode surface 1110 of the first electrode 111 and the protective sheath surface 1130 is 0-0.5 mm. The existence of this height difference can make the first electrode 111 fully contact the surface to be ablated to ensure the ablation effect. The height difference between the electrode surface 1110 of the first electrode 111 and the protective sheath surface 1130 is preferably 0.2 mm.

In this embodiment, the electrode surface 1110 and the protective sheath surface 1130 are both flat surfaces.

In order to achieve cooling of the first electrode tip 110, as shown in FIG. 6, there are multiple first electrodes 111, and the multiple first electrodes 111 are arranged at intervals along the extending direction of the first electrode tip 110; At least one of the first electrodes 111 in the 111 is provided with a cooling hole 1112 for circulating a cooling fluid; and/or a cooling pipe for circulating a cooling fluid is provided in the first protective sheath 113 . In this embodiment, the cooling holes 1112 are provided for local cooling during the ablation process, so as to protect other parts other than the ablation site from being damaged. By providing cooling channels, cooling can be performed on the sides of the electrodes.

In this embodiment, at least one of the plurality of first electrodes 111 is provided with 1 to 4 cooling holes 1112 . The number of cooling holes on each first electrode 111 is 0-4 to ensure temperature control during ablation.

The present disclosure also provides a radio frequency ablation device. As shown in FIG. 11 , the radio frequency ablation device includes a radio frequency host 310 and the above-mentioned ablation device, and the ablation device is connected to the radio frequency host 310 .

Optionally, as shown in FIG. 10 , the radio frequency host 310 is provided with a display screen 313 , and the display screen 313 is used to display the measured values of the tissue to be ablated between the two corresponding first electrodes 111 and the second electrodes 211 . Impedance and/or RF power.

Optionally, the radio frequency host 310 is further provided with an ablation interface 311, the first electrode assembly 100 and the second electrode assembly 200 each include a plurality of lead assemblies, and each lead assembly includes a lead connector and a plurality of parallel connection connected to the lead connector. Lead wires, each lead wire is used to connect with the corresponding electrode; the ablation interface 311 has a first ablation interface part and a second ablation interface part, and the first ablation interface part has a plurality of lead wires for inserting the plurality of lead wires of the first electrode assembly 100. a first ablation interface, the second ablation interface part has a plurality of second ablation interfaces for inserting a plurality of lead wires of the second electrode assembly 200, so as to communicate with the corresponding The first electrode and corresponding second electrode 211 provide suitable radio frequency power.

Optionally, when the first magnetic member 112 and the second magnetic member 212 are both electromagnets, the radio frequency host 310 is further provided with an electromagnetic interface 312, and both the first electrode assembly 100 and the second electrode assembly 200 include a plurality of electromagnets. components, each electromagnet assembly includes an electromagnetic joint and a plurality of electromagnetic wires connected in parallel with the electromagnetic joint, and each electromagnetic wire is used to connect with the corresponding electromagnet; the electromagnetic interface 312 has a first electromagnetic interface part and a second electromagnetic interface part , the first electromagnetic interface part has a plurality of first magnetic interfaces for inserting a plurality of electromagnetic joints of the first electrode assembly 100 , and the second electromagnetic interface part has a plurality of electromagnetic joints for inserting a plurality of electromagnetic joints of the second electrode assembly 200 a plurality of second magnetic interfaces, so as to supply power to the corresponding first magnetic member 112 and the corresponding second magnetic member 212 through each of the first magnetic An attraction force is generated between the second magnetic members 212 .

From the above description, it can be seen that the above-mentioned embodiments of the present disclosure achieve the following technical effects:

In the electrode assembly of the present disclosure, the electrode assembly includes an electrode tip 110 , the electrode tip 110 includes a first protective sheath 113 , and a first electrode 111 and a filling member 116 disposed in the first protective sheath 113 , through the filling member 116 The first electrode 111 is squeezed to move the first electrode 111 toward the tissue to be ablated, so that the first electrode 111 can fit with the inner wall of the first protective sheath 113, and the corresponding position of the first protective sheath 113 The outer wall is attached to the corresponding tissue to be ablated, so as to ensure that the first electrode 111 can better act on the corresponding tissue to be ablated and ensure the ablation effect; it can be seen that the use of this electrode assembly can solve the medical interventional ablation device in the prior art The problem of unsatisfactory ablation effect.

Applying the technical solutions of the present disclosure, the ablation device includes a first electrode assembly having a first electrode tip and a second electrode assembly having a second electrode tip. The first electrode assembly and the second electrode assembly can be used independently, and the first electrode tip includes a first protective sheath and a plurality of first electrodes disposed on the first protective sheath; An electrode is arranged at intervals along the extension direction of the first protective sheath, that is, a plurality of first electrodes act on the epicardial tissue at the same time to form a complete ablation line. When the protective sheath is made of flexible material, it can solve the problem of existing surgical instruments. The angle of use is limited and the surgical operation is inconvenient.

The first electrode and the second electrode of the ablation device are arranged opposite to each other, so that the tissue to be ablated located between the first electrode and the second electrode is ablated by the first electrode and the second electrode. When in use, the first electrode assembly and the second electrode assembly are used as epicardial electrodes and endocardial electrodes, respectively, so that the first electrode assembly and the second electrode assembly act on the epicardium and the endocardium, respectively, to achieve Simultaneously ablate the epicardium and endocardium to achieve a good ablation effect, solve the problem that the energy of medical interventional ablation is constant, and the output power cannot be adjusted according to the ablation effect in a timely manner, resulting in overburning or wall impermeability and cardiac surgery is dynamic ablation, but surgery The ablation trauma is relatively large and the postoperative recovery is slow; thereby achieving a good ablation effect and improving ablation efficiency; it can be seen that the use of the ablation device can solve the problem of unsatisfactory ablation effect of the ablation device in the prior art.

The ablation device of the present disclosure includes the above-mentioned electrode assembly, so the ablation device has at least the same technical effect as the electrode assembly.

The radio frequency ablation device of the present disclosure includes the above-mentioned ablation device, so the radio frequency ablation device has at least the same technical effect as the ablation device.

The present disclosure provides an ablation device, please refer to FIG. 1 to FIG. 19 , the ablation device includes a first electrode assembly 100 and a second electrode assembly 200 , the first electrode assembly 100 includes a first electrode tip 110 , the first electrode end The head 110 includes a first protective sheath 113 , a first electrode 111 and a filling member 116 . The first electrode 111 is arranged in the first protective sheath 113 ; The first electrode 111 in a protective sheath 113 is pressed toward the site to be ablated; wherein, the second electrode assembly 200 includes a second electrode tip 210, the second electrode tip 210 includes a second electrode 211, and the second electrode 211 and the first electrode An electrode 111 is disposed opposite to each other to ablate the site to be ablated between the first electrode 111 and the second electrode 211 through the first electrode 111 and the second electrode 211 .

In the ablation device of the present disclosure, the ablation device includes a first electrode assembly 100 and a second electrode assembly 200, the first electrode assembly 100 includes a first electrode tip 110, and the first electrode tip 110 includes a first protective sheath 113 and The first electrode 111 and the filler 116 are arranged in the first protective sheath 113, and the first electrode 111 is squeezed by the filler 116 to move the first electrode 111 toward the site to be ablated, so that the first electrode 111 can interact with the site to be ablated. The inner wall of the first protective sheath 113 is fitted, and the outer wall of the first protective sheath 113 at the corresponding position is fitted with the corresponding part to be ablated, so as to ensure that the first electrode 111 can better act on the corresponding part to be ablated, To ensure the ablation effect; the second electrode assembly 200 includes a second electrode tip 210, and the second electrode tip 210 includes a second electrode 211 arranged opposite to the first electrode 111, so as to be located in the opposite direction by the first electrode 111 and the second electrode 211. The site to be ablated between the first electrode 111 and the second electrode 211 is ablated. In use, the first electrode assembly 100 and the second electrode assembly 200 are used as epicardial electrodes and endocardial electrodes, respectively, so that the first electrode assembly 100 and the second electrode assembly 200 act on the epicardium and the heart, respectively membrane to achieve simultaneous epicardium and endocardium ablation for good ablation results. It can be seen that the use of the ablation device can solve the problem that the ablation effect of the ablation device in the prior art is not ideal.

In addition, the ablation device in the present disclosure can realize hybrid ablation of internal and surgical techniques. This technique has little trauma, which solves the problems of large trauma and slow recovery in the prior art for surgical ablation. Simultaneous ablation adjusts the output power by testing the actual impedance between tissues, which is accurate and safe, and the machine alarms when the impedance reaches a certain resistance value to complete the ablation to avoid excessive ablation.

Optionally, the ablation device further includes an ablation circuit 320 on which the first electrode 111 and the second electrode 211 are both disposed, so as to adjust the first electrode 111 and the corresponding second electrode 211 by testing the impedance between the first electrode 111 and the corresponding second electrode 211 . The ablation is performed by radio frequency energy between the electrode 111 and the second electrode 211 . By arranging the first electrode 111 and the second electrode 211 opposite to each other, the impedance between the first electrode 111 and the second electrode 211 can be tested in real time, and the impedance between the first electrode 111 and the second electrode 211 detected in real time can be measured in real time. Adjust the radio frequency power between the first electrode 111 and the second electrode 211, and after the impedance reaches a certain resistance value, the machine alarms that the ablation is completed to avoid excessive ablation, so as to solve the problem that the unilateral ablation depth of the interventional ablation in the prior art is limited and it is difficult to guarantee the tissue It solves the problem of complete dehydration and degeneration from the inside to the outside, and solves the problem that the radio frequency power is not easy to control. Low power will cause incomplete ablation, and excessive power will cause excessive ablation, tissue necrosis and even burn through and leakage.

Optionally, as shown in FIG. 3 and FIG. 8 , there are multiple first electrodes 111 and multiple second electrodes 211, and multiple first electrodes 111 and multiple second electrodes 211 are arranged in cooperation with each other; by setting multiple first electrodes 111 and multiple second electrodes 211 Electrodes 111 and multiple second electrodes 211, so that multiple first electrodes 111 and multiple second electrodes 211 can simultaneously act on their corresponding parts to be ablated, so as to ensure ablation effect and improve ablation efficiency; The first electrodes 111 are arranged at intervals to avoid mutual influence between two adjacent first electrodes 111 . The plurality of second electrodes 211 are arranged at intervals to avoid mutual influence between two adjacent second electrodes 211 .

Optionally, the first protective sheath 113 is strip-shaped, and the plurality of first electrodes 111 are arranged at intervals along the extending direction of the first protective sheath 113; to form a complete ablation line.

In this embodiment, the number of the first electrodes 111 is 2 to 10. Optionally, filler 116 is a flexible mass.

In this embodiment, an arrangement of the filler 116 is as follows: as shown in FIG. 2 , the filler 116 is strip-shaped, and the filler 116 extends along the extending direction of the first protective sheath 113 . Optionally, the filler 116 is an airbag structure, so as to form a pressing effect on the plurality of first electrodes 111 when the airbag structure is inflated and expanded.

In this embodiment, another arrangement of the fillers 116 is as follows: there are multiple fillers 116 , and the multiple fillers 116 are arranged at intervals along the extending direction of the first protective sheath 113 ; the multiple fillers 116 and the multiple The electrodes 111 are arranged in a one-to-one correspondence, so that each filler 116 can form a pressing effect on the corresponding first electrode 111; In order to realize that each filler 116 forms a pressing effect on the corresponding first electrode 111, each first electrode 111 moves in a direction close to the corresponding part to be ablated. Optionally, each filling member 116 is an airbag structure, so that when the airbag structure is inflated and inflated, a pressing effect is formed on the corresponding first electrode 111 .

Optionally, the first protective sheath 113 is provided with an opening structure for avoiding the first electrode 111, so that part of the structure of the first electrode 111 is protruded from the cavity of the first protective sheath 113 through the opening structure, so that, This part of the electrode structure extending out of the cavity of the first protective sheath 113 can be in direct contact with the corresponding part to be ablated, so that this part of the electrode structure can better act on its corresponding part to be ablated, so as to further ensure the ablation effect and improve the Ablation efficiency.

In this embodiment, a setting form of the opening structure is: when there are multiple first electrodes 111 , the opening structure includes multiple avoidance openings, and the multiple avoidance openings correspond to the multiple first electrodes 111 one-to-one so that the part of the structure of each first electrode 111 protrudes to the outside of the first protective sheath 113 through the corresponding avoidance holes, so that the part of the structure of each first electrode 111 protruding from the outside of the first protective sheath 113 is Can be in direct contact with the corresponding site to be ablated.

Optionally, the second electrode tip 210 includes a second protective sheath, and a plurality of second electrodes 211 are sleeved on the second protective sheath; wherein, the plurality of first electrodes 111 and the plurality of second electrodes 211 are arranged in cooperation with each other.

Optionally, the second protective sheath is strip-shaped, and the plurality of second electrodes 211 are arranged at intervals along the extending direction of the second protective sheath; that is, the plurality of second electrodes 211 simultaneously act on the corresponding parts to be ablated to form A complete ablation line.

In this embodiment, the first electrode tip 110 further includes a first magnetic member 112 , the second electrode tip 210 includes a second magnetic member 212 , and the first magnetic member 112 and the second magnetic member 212 cooperate with each other, so that the An electrode tip 110 and a second electrode tip 210 are relatively fixed, so that the first electrode 111 of the first electrode tip 110 can be disposed opposite to the corresponding second electrode 211 of the second electrode tip 210 .

Optionally, the plurality of first magnetic members 112 are all disposed in the lumen of the first protective sheath 113 .

Optionally, the plurality of first magnetic members 112 are all disposed in the first protective sheath 113 , and the plurality of first magnetic members 112 are disposed at intervals along the extending direction of the first protective sheath 113 . Optionally, the plurality of first magnetic members 112 and the plurality of first electrodes 111 are alternately arranged along the extending direction of the first protective sheath 113 , so that the plurality of first electrodes 111 are arranged at intervals, that is, each first magnetic member 112 is used to separate the plurality of first electrodes 111 . The corresponding two first electrodes 111 are turned on. During operation, each pair of the first magnetic member 112 and the second magnetic member 212 works relatively independently, that is, the number of the magnetic members to work can be determined according to actual needs. The magnetic force of the magnetic parts is controllable and adjustable. A small magnetic force is used in the initial positioning, and a larger magnetic force is used in the final positioning, so that the inner and outer two electrode assemblies are flexible at the initial positioning and firm after the final positioning, so as to ensure the fit of the electrodes. , thereby ensuring the ablation effect.

Optionally, the plurality of second magnetic members 212 are all sleeved on the second protective sheath, and the plurality of second magnetic members 212 are arranged at intervals along the extending direction of the second protective sheath. Optionally, the plurality of second magnetic members 212 and the plurality of second electrodes 211 are alternately arranged along the extending direction of the second protective sheath, so that the plurality of second electrodes 211 are arranged at intervals, that is, each second magnetic member 212 is used to separate The corresponding two second electrodes 211 .

In this embodiment, the opposite sides of the first protective sheath 113 are provided with shielding side eaves 115 to form shielding protection for the plurality of first electrodes 111 and the plurality of first magnetic members 112 inside the first protective sheath 113 . It can prevent the blood in the epicardial tissue from entering the area between the first protective sheath 113 and the epicardium during the ablation process and affect the tightness between the first protective sheath 113 and the epicardium, and avoid the first protective sheath 113 during ablation. The measurement accuracy of the resistance value between the electrode 111 and the second electrode 211 affects the ablation effect. In addition, by setting the shielding side eave 115, the tissue fluid outside the ablation line and liquids such as physiological saline can be shielded from entering the ablation site, so as to avoid the measurement accuracy of the resistance value between the first electrode and the second electrode during ablation, thereby affecting the ablation effect.

Optionally, as shown in FIG. 5 , the first electrode 111 and/or the first magnetic member 112 is provided with a wire laying groove 120 for accommodating the wire 118, and the wire 118 is used to connect with the first electrode 111; The wire laying groove 120 for laying the wire 118 is provided on the inner wall of the first protective sheath 113 .

Optionally, referring to FIGS. 13 and 19 , the plurality of second magnetic members 212 and the plurality of second electrodes 211 are both annular structures. Or polygonal, V-shaped, D-shaped, arched and other cross-sectional structures. As shown in FIG. 19 , the cross section of the second electrode 211 is a polygon, for example, a square.

In this embodiment, the developing member 213 , the second electrode 211 with a developing function, and the second protective sheath 214 with a developing function can indicate the position of the second electrode assembly 200 when it enters the ablation site. Optionally, the number of the developing members 213 on the second electrode end 210 is 3-6, and the number of the developing members 213 may be set independently or the second electrode 211 may have a developing function. In this embodiment, the outer walls of the developing member 213 and the second protective sheath 214 are flush to prevent damage to the patient during the operation.

In this embodiment, as shown in FIG. 6 , the first electrode 111 has an electrode surface 1110 disposed toward the site to be ablated, and the first protective sheath 113 has a protective sheath surface 1130 disposed toward the site to be ablated; wherein, the electrode surface 1110 is located on the The protective sheath surface 1130 is close to the side of the site to be ablated.

Optionally, the radio frequency host 310 is further provided with an ablation interface 311, the first electrode assembly 100 and the second electrode assembly 200 each include a plurality of lead assemblies, and each lead assembly includes a lead connector and a plurality of parallel connection connected to the lead connector. Lead wires, each lead wire is used to connect with the corresponding electrode; the ablation interface 311 has a first ablation interface part and a second ablation interface part, and the first ablation interface part has a plurality of lead wires for inserting the plurality of lead wires of the first electrode assembly 100. a first ablation interface, the second ablation interface part has a plurality of second ablation interfaces for inserting a plurality of lead wires of the second electrode assembly 200, so as to communicate with the corresponding The first electrode 111 and the corresponding second electrode 211 provide suitable radio frequency power.

For ease of description, spatially relative terms, such as "on", "over", "on the surface", "above", etc., may be used herein to describe what is shown in the figures. The spatial positional relationship of one device or feature shown to other devices or features. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or features would then be oriented "below" or "over" the other devices or features under other devices or constructions". Thus, the exemplary term "above" can encompass both an orientation of "above" and "below." The device may also be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

It should be noted that the terms "first", "second" and the like in the description and claims of the present disclosure and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein can, for example, be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

The above descriptions are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

An electrode assembly, comprising a first electrode tip (110), the first electrode tip (110) comprising:

a first protective sheath (113);

a first electrode (111), the first electrode (111) is disposed in the first protective sheath (113);

A filler (116), the filler (116) is arranged in the first protective sheath (113), so that the first protective sheath (113) is filled with the An electrode (111) is pressed towards the tissue to be ablated.
The electrode assembly according to claim 1, wherein there are a plurality of the first electrodes (111), the first protective sheath (113) is strip-shaped, and the plurality of the first electrodes (111) are along the The extending directions of the first protective sheaths (113) are arranged at intervals.
The electrode assembly according to claim 1 or 2, wherein the filler (116) is strip-shaped, the first protective sheath (113) is strip-shaped, and the filler (116) is along the first The extension direction of the protective sheath (113) extends.
The electrode assembly according to any one of claims 1 to 3, wherein there are a plurality of the fillers (116), the first protective sheath (113) is strip-shaped, and a plurality of the fillers (116) ) are arranged at intervals along the extending direction of the first protective sheath (113).
The electrode assembly according to claim 4, wherein a plurality of the filling members (116) and a plurality of the first electrodes (111) are arranged in a one-to-one correspondence, and each of the filling members (116) is arranged in a corresponding The side of the first electrode (111) away from the tissue to be ablated.
The electrode assembly according to any one of claims 2 to 5, wherein the energization circuits of the plurality of first electrodes (111) are independently provided to individually control each of the first electrodes (111).
The electrode assembly according to any one of claims 4 to 6, wherein the ventilation lines of a plurality of the filling members (116) are independently provided, so as to individually control the inflation state of each of the filling members (116).
The electrode assembly according to any one of claims 1 to 7, wherein the filler (116) is a balloon structure or the filler (116) is a flexible block.
The electrode assembly according to any one of claims 1 to 8, wherein the first protective sheath (113) is provided with an opening structure for avoiding the first electrode (111), so that the first protective sheath (113) is A part of the structure of an electrode (111) protrudes from the cavity of the first protective sheath (113) through the opening structure.
The electrode assembly according to claim 9, wherein there are a plurality of the first electrodes (111), the opening structure comprises a plurality of avoidance holes, a plurality of the avoidance holes and a plurality of the first electrodes The electrodes (111) are arranged in a one-to-one correspondence, so that part of the structure of each of the first electrodes (111) protrudes to the outside of the first protective sheath (113) through the corresponding avoidance holes.
The electrode assembly according to claim 9 or 10, wherein there are a plurality of the first electrodes (111), the opening structure is a strip-shaped opening, and the strip-shaped opening is along the first protective sheath (113) ) in the extending direction, and the partial structures of the plurality of first electrodes (111) protrude to the outside of the first protective sheath (113) through the strip-shaped openings.
An ablation device, comprising a first electrode assembly (100) and a second electrode assembly (200), wherein the first electrode assembly (100) is the electrode assembly according to any one of claims 1 to 11, wherein The second electrode assembly (200) includes a second electrode tip (210), the second electrode tip (210) includes a second electrode (211), the second electrode (211) and the first electrode (111) are arranged opposite to each other, so that the tissue to be ablated between the first electrode (111) and the second electrode (211) is paired with the first electrode (111) and the second electrode (211) Perform ablation.
The ablation device according to claim 12, wherein the second electrode tip (210) comprises a second protective sheath, the second electrodes (211) are plural, and the second electrodes (211) are plural The utility model is sleeved on the second protective sheath; wherein, the plurality of first electrodes (111) and the plurality of second electrodes (211) are arranged in cooperation with each other.
The ablation device of claim 12 or 13, wherein the ablation device further comprises:

The ablation circuit (320), the first electrode (111) and the second electrode (211) are both arranged on the ablation circuit (320), so as to pass the test of the first electrode (111) and the corresponding all the The impedance between the second electrodes (211) adjusts the radio frequency energy between the first electrodes (111) and the second electrodes (211) to perform ablation.
A radio frequency ablation device, comprising a radio frequency host (310) and an ablation device connected to the radio frequency host (310), wherein the ablation device is the ablation device according to any one of claims 12 to 14.