WO2022148155A1

WO2022148155A1 - Electrode assembly, ablation apparatus, and radiofrequency ablation device

Info

Publication number: WO2022148155A1
Application number: PCT/CN2021/132380
Authority: WO
Inventors: 马志伟; 刘晓芳; 马帅; 王宇; 周庆亮; 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 (100), an ablation apparatus, and a radiofrequency ablation device. The electrode assembly (100) comprises a first electrode terminal (110). The first electrode terminal (110) comprises a first protective sheath (113), a suction positioning element (117) provided on the first protective sheath (113), and a first electrode (111) and a filler (116) provided within the first protective sheath (113), thus allowing the first protective sheath (113) to be positioned at a tissue to be ablated (340) under the effect of the suction positioning element (117). Moreover, with the filler (116) squeezing the first electrode (111) so that the first electrode (111) is moved towards a part to be ablated, the first electrode (111) is attached to the inner wall of the first protective sheath (113), and the outer wall of the first protective sheath (113) at the corresponding position is attached to the corresponding part to be ablated, thus ensuring that the first electrode (111) can better act on the corresponding part to be ablated, and ensuring an ablation effect. The use of the electrode assembly (100) solves the problem in the prior art of the ablation effect of an ablation apparatus being less than ideal.

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 202110025101.4, 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 202120046532.4, and the application date of January 2021. On the 8th, a Chinese patent application titled "ablation device and radiofrequency ablation device" was published as the basis, and priority was claimed, and the disclosure of the Chinese patent application is hereby incorporated into the present disclosure as a whole.

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 radiofrequency ablation device to solve the problems that the current ablation device does not adhere firmly to the tissue to be ablated, easily detaches the tissue to be ablated, and has an unsatisfactory ablation effect.

A first aspect of the present disclosure provides an electrode assembly including a first electrode tip, the first electrode tip comprising:

first protective sheath;

a first electrode, the first electrode is disposed in the first protective sheath;

a suction positioning piece, the suction positioning piece is arranged on the first protective sheath, so that the first protective sheath is positioned on the tissue to be ablated by the action of the suction positioning piece;

a filler, the filler is arranged in the cavity of the first protective sheath, and at least a part of the filler is arranged to be inflatable and shrinkable, so as to direct the first electrode toward the The tissue to be ablated is squeezed.

In the electrode assembly of some embodiments, the first protective sheath is strip-shaped,

There are a plurality of the first electrodes, and the plurality of the first electrodes are arranged at intervals along the extending direction of the first protective sheath; and/or

There are a plurality of the suction positioning members, and the plurality of suction positioning members are arranged at intervals along the extending direction of the first protective sheath.

There are a plurality of the filling members, and the plurality of the filling members are arranged at intervals along the extending direction of the first protective sheath and can be independently controlled; and/or

The filler is in the shape of a bar, and the filler extends along the extension direction of the first protective sheath.

In the electrode assembly of some embodiments, the suction and positioning member is a suction cup structure; and/or the filling member is a balloon structure.

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; and/or

There are a plurality of the first electrodes, the opening structure is a strip-shaped opening, the strip-shaped openings are spaced along the extending direction of the first protective sheath, and a part of the structure of the plurality of first electrodes passes through the strips The shaped opening protrudes to the outside of the first protective sheath.

In the electrode assembly of some embodiments, an accommodating groove is provided on the inner wall of the first protective sheath, and when the filling member is in a contracted state, the filling member is accommodated in the accommodating groove; When the filler is in an expanded state, at least a part of the filler is protruded from the receiving groove to press the first electrode toward the tissue to be ablated.

In the electrode assembly of some embodiments, the electrode assembly further includes a first magnetic member, the first magnetic member is disposed in the first protective sheath; the first electrode and/or the first magnetic member is disposed on There are locating grooves for accommodating the filler.

In the electrode assembly of some embodiments, the first electrodes and the first magnetic members are both plural, and the plurality of the first electrodes and the plurality of the first magnetic members are along the first protective sheath. The extension directions are arranged staggered in sequence.

In the electrode assembly of some embodiments, the first electrode and/or the first magnetic member is provided with a wire laying groove for accommodating a wire, and the wire is used for connecting with the first electrode.

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 ablation device further comprises:

an ablation circuit on which both the first electrode and the second electrode are disposed to adjust the first electrode and the second electrode by testing the impedance between the first electrode and the corresponding second electrode radiofrequency energy between the second electrodes to perform ablation.

In the ablation device of some embodiments, the first protective sheath is strip-shaped; both the first electrode and the second electrode are multiple, and the first electrode and the second electrode are multiple. The plurality of first electrodes are arranged at intervals along the extending direction of the first protective sheath.

In the ablation device of some embodiments, the first electrode assembly further includes a first magnetic member disposed in the first protective sheath; the second electrode assembly further includes a first magnetic member disposed in the first protective sheath; The second magnetic member of the second electrode end, the first magnetic member and the second magnetic member are matched, so that the first electrode end and the second electrode end are relatively fixed.

A third aspect of the present disclosure provides a radio frequency ablation device, including a radio frequency host and an ablation device connected to the radio frequency host, where 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, and the first electrode tip includes a first protective sheath, a suction positioning member disposed on the first protective sheath, and a first protective sheath disposed in the first protective sheath. an electrode and a filler, so that the first protective sheath is positioned on the tissue to be ablated by the suction and positioning member; and the first electrode is squeezed by the filler to move the first electrode toward the part to be ablated, thereby making the first electrode move toward the part to be ablated. An 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 part to be ablated, so as to ensure that the first electrode can better act on the corresponding part to be ablated, The ablation effect is guaranteed; it can be seen that the use of the electrode assembly can solve the problem that the ablation effect of the ablation device in the prior art is not ideal.

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 electrode assembly (first electrode assembly) of an optional ablation device according to the present disclosure;

FIG. 2 shows an internal perspective structural view of an embodiment of the first electrode assembly in FIG. 1;

FIG. 3 shows a cross-sectional view of the first electrode assembly in FIG. 2;

Figure 4 shows a cross-sectional view of another embodiment of the first electrode assembly in Figure 1;

FIG. 5 shows a schematic structural diagram of the shielding side eaves of the first electrode assembly in FIG. 1;

FIG. 6 shows a longitudinal cross-sectional view of the filler of the first electrode assembly in FIG. 1;

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;

117, suction and positioning member; 1171, suction inner wall; 1172, suction outer wall; 1173, suction cavity;

1174, the first suction port; 1175, the second suction port; 1176, the airflow channel;

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 (also referred to as a first electrode assembly), please refer to FIG. 1 to FIG. 19 , the first electrode assembly includes a first electrode tip 110 , and the first electrode tip 110 includes a first protective sheath 113 , the first electrode 111, the suction positioning member 117 and the filling member 116, the first electrode 111 is arranged in the first protective sheath 113; the suction positioning member 117 is arranged on the first protective sheath 113, so that the first protective sheath 113 Positioned on the tissue to be ablated by the action of the suction and positioning member 117; the filling member 116 is arranged in the cavity of the first protective sheath 113, and at least a part of the filling member 116 is arranged to be inflatable and shrinkable, so that when the filling member 116 expands, the first An electrode 111 is pressed toward the tissue to be ablated.

In the electrode assembly of the present disclosure, the electrode assembly (first electrode assembly) includes a first electrode tip 110 , and the first electrode tip 110 includes a first protective sheath 113 , and a pull-in position provided on the first protective sheath 113 117 and the first electrode 111 and the filling member 116 disposed in the first protective sheath 113, so that the first protective sheath 113 is positioned on the tissue to be ablated by the action of the suction positioning member 117; The electrode 111 is squeezed to move the first electrode 111 toward the part to be ablated, so that the first electrode 111 can fit with the inner wall of the first protective sheath 113, and the outer wall of the first protective sheath 113 at the corresponding position corresponds to the corresponding position. The parts to be ablated are attached to each other, so as to ensure that the first electrode 111 can better act on the corresponding parts to be ablated and ensure the ablation effect; it can be seen that the use of the first electrode assembly can solve the problems of the medical interventional ablation device in the prior art. The problem of unsatisfactory ablation effect.

In some embodiments, as shown in FIG. 2 , the first protective sheath 113 is strip-shaped, there are multiple first electrodes 111 , and the plurality of first electrodes 111 are arranged at intervals along the extending direction of the first protective sheath 113 ; Each of the first electrodes 111 acts on the corresponding part to be ablated at the same time to form a complete ablation line, ensuring the ablation effect and improving the ablation efficiency; and arranging the plurality of first electrodes 111 at intervals can avoid two adjacent second electrodes 111 . An electrode 111 interacts with each other.

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, a structural form of the filling member 116 is: as shown in FIG. 6 , the filling member 116 is a strip shape, the first protective sheath 113 is a strip shape, and the filling member 116 is along the extending direction of the first protective sheath 113 . extend. In some embodiments, 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 structural form of the filler 116 is: there are multiple fillers 116 , the multiple fillers 116 are arranged at intervals along the extending direction of the first protective sheath 113 and can be independently controlled; a plurality of fillers 116 They are arranged in a one-to-one correspondence with the plurality of first electrodes 111, so that each filler 116 can form a pressing effect on the corresponding first electrode 111; each filler 116 is arranged on the corresponding first electrode 111 away from the tissue to be ablated. so that when each filler 116 forms 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. In some embodiments, each filling member 116 is an airbag structure, so that when the airbag structure is inflated and inflated, the corresponding first electrode 111 is squeezed.

In some embodiments, the suction positioning members 117 are arranged in pairs, and each pair of suction positioning members 117 works relatively independently during operation, that is, the number of suction positioning members to work can be determined according to actual needs.

In some embodiments, the suction positioning member 117 is a suction cup structure.

In some embodiments, as shown in FIGS. 3 and 4 , the suction positioning member 117 includes a suction inner wall 1171 and a suction outer wall 1172 , and a suction cavity 1173 is formed between the suction inner wall 1171 and the suction outer wall 1172 , and a suction cavity 1173 is formed between the suction inner wall 1171 and the suction outer wall 1172 . The first suction port 1174 and the second suction port 1175 communicate with the suction cavity 1173 , and the orientation of the first suction port 1174 and the second suction port 1175 is the same.

Both the suction inner wall 1171 and the suction inner wall 1171 are U-shaped structures, and the suction inner wall 1171 and the suction outer wall 1172 are arranged around the first protective sheath 113 .

The suction positioning member 117 further includes an airflow channel 1176 , and the air outlet end of the airflow channel 1176 is communicated with the suction cavity 1173 , so as to fill and draw air into the suction cavity 1173 through the airflow channel 1176 .

Optionally, there are multiple pull-in positioning members 117 .

In this embodiment, an arrangement of the plurality of suction positioning members 117 is as follows: the plurality of suction positioning members 117 are arranged at intervals along the extending direction of the first protective sheath 113 , so that the first protective sheath 113 is stably positioned on the On the tissue to be ablated, the positioning effect of the first protective sheath 113 is guaranteed.

In this embodiment, another arrangement of the multiple suction positioning members 117 is: as shown in FIG. 2 , the multiple suction positioning members 117 are arranged in pairs, and the paired two suction positioning members 117 are respectively They are arranged on opposite sides of the first protective sheath 113 to ensure a good fit between both sides of the first protective sheath 113 and the tissue to be ablated, so that the corresponding first electrodes 111 can better act on The corresponding ablated tissue ensures the ablation effect.

A plurality of pairs of suction positioning members 117 are arranged at intervals along the extending direction of the first protective sheath 113, so that the first protective sheath 113 is stably positioned on the tissue to be ablated, so as to ensure the positioning effect of the first protective sheath 113, thereby ensuring the first protective sheath 113. The overall fit between the sheath 113 and the tissue to be ablated is such that each first electrode 111 can better act on the corresponding tissue to be ablated, thereby ensuring the ablation effect.

In some embodiments, 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 protrudes from the cavity of the first protective sheath 113 through the opening structure, In this way, the 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 , 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 .

In this embodiment, a setting method of the filling member 116 is as follows: the inner wall of the first protective sheath 113 is provided with an accommodating groove, and when the filling member 116 is in a contracted state, the filling member 116 is accommodated in the accommodating groove; When the filler 116 is in the expanded state, at least a part of the filler 116 is protruded from the accommodating groove to press the first electrode 111 toward the tissue to be ablated.

In this embodiment, another arrangement of the filling member 116 is as follows: the first electrode 111 and/or the first magnetic member 112 are provided with a positioning groove for accommodating the airbag structure. When the filling member 116 is in a contracted state, The filler 116 is accommodated in the positioning groove. When the filler 116 is in an expanded state, at least part of the filler 116 is protruded from the positioning groove to press the first electrode 111 toward the tissue to be ablated.

In some embodiments, the first electrode assembly further includes a first magnetic member 112 , and the first magnetic member 112 is disposed in the first protective sheath 113 .

Optionally, there are multiple first electrodes 111 and multiple first magnetic members 112 , and multiple first electrodes 111 and multiple first magnetic members 112 are alternately arranged in sequence along the extending direction of the first protective sheath 113 , so that multiple The first electrodes 111 are arranged at intervals, that is, each first magnetic member 112 is used to separate the corresponding two first electrodes 111 .

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

In some embodiments, the first electrode 111 and/or the first magnetic member 112 are provided with wire laying grooves 120 for accommodating wires, and the wires are used to connect with the first electrodes 111 .

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 electrode of the first electrode assembly 100 includes a first electrode tip 110, the first electrode tip 110 includes a first electrode 111, 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 is disposed opposite to the first electrode, The tissue to be ablated between the first electrode and the second electrode 211 is ablated by the first electrode and the second electrode 211 .

In some embodiments, the second electrode assembly 200 further includes a second magnetic member 212 , a plurality of second electrodes 211 , and the plurality of second electrodes 211 and the plurality of second magnetic members 212 extend along the first electrode tip 110 The directions are staggered in sequence.

In some embodiments, the first magnetic member 112 of the first electrode assembly 100 cooperates with the second magnetic member 212 so that the first electrode end 110 and the second electrode end 210 of the first electrode assembly 100 are relatively fixed.

In some embodiments, there are a plurality of first electrodes 111 , a plurality of first magnetic members 112 and a plurality of second magnetic members 212 , the plurality of first magnetic members 112 and the plurality of first electrodes 111 are staggered and spaced apart, and the plurality of The two magnetic elements 212 and the plurality of second electrodes 211 are alternately arranged at intervals.

In some embodiments, the adjacent first electrodes 111 are insulated from the first magnetic members 112 of the first electrode assembly 100 , and the adjacent second electrodes 211 and the second magnetic members 212 are insulated from each other.

In some embodiments, the opposite surfaces between the adjacent first electrodes 111 and the first magnetic members 112 of the first electrode assembly 100 are both sprayed with insulating paint, or the adjacent first electrodes 111 and the first magnetic members 112 are sprayed with insulating paint. An insulating separator is arranged between them; the opposite surfaces between the adjacent second electrodes 211 and the second magnetic members 212 are sprayed with insulating paint, or, the adjacent second electrodes 211 and the second magnetic members 212 are arranged between There are insulating partitions. The insulating baffle and the first protective sheath 113 are integrally designed or separately fixed.

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 of the first electrode assembly 100 , the second electrode 211 and the second magnetic member 212 are all connected to independent energization circuits for individual control. The plurality of first electrodes, second electrodes, first magnetic parts, and second magnetic parts can work independently, so that the magnetic properties can be adjusted and the number of ablation electrodes can be adjusted. The energization circuits of the two adjacent first electrodes or the second electrodes are independently arranged to form an ablation electrode pair, so as to realize the ablation function.

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 that form the mapping electrode pair are different, and the voltage across the voltage is set to form a current, so as to realize the mapping; the polarities of the two second electrodes 211 that form the mapping electrode pair are different, The 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 voltage is set to form a current, and then the mapping is realized.

In some embodiments, both the first electrode tip 110 and the second electrode tip 210 of the first electrode assembly 100 are multiple.

In some embodiments, the ablation device further includes an ablation circuit 320 , and both the first electrode 111 and the second electrode 211 are disposed in the ablation circuit 320 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 . Ablation is performed by radio frequency energy between the first electrode 111 and the second electrode 211 .

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.

In some embodiments, as shown in FIG. 2 and FIG. 8 , both the first electrodes 111 and the second electrodes 211 are multiple, and the multiple first electrodes 111 and the multiple second electrodes 211 are arranged in a one-to-one correspondence; The plurality of first electrodes 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.

In some embodiments, the first electrode terminal 110 and the second electrode terminal 210 are both strip-shaped, the plurality of first electrodes 111 are arranged at intervals along the extending direction of the first electrode terminal 110 , and the plurality of second electrodes 211 are arranged along the extending direction of the first electrode terminal 110 . The extending directions of the second electrode ends 210 are arranged at intervals, and the first electrodes 111 and the corresponding second electrodes 211 are arranged to cooperate with each other; to form a complete ablation line to ensure the ablation effect; and to arrange a plurality of first electrodes 111 at intervals and a plurality of second electrodes 211 at intervals, which can avoid the adjacent first electrodes 111 and the adjacent ones. The two second electrodes 211 influence each other.

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

In some embodiments, when there are multiple first magnetic members 112 and multiple 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 at intervals along the extending direction of the second electrode tip 210 to ensure the overall fixing effect between the first electrode tip 110 and the second electrode tip 210 .

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

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 shielding side eaves 115 are strip-shaped, and the shielding side eaves 115 extend along the extending direction 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).

In some embodiments, the plurality of second magnetic members 212 and the plurality of second electrodes 211 are both sleeved on the second protective sheath 214 ; optionally, the plurality of second magnetic members 212 and the plurality of second electrodes 211 are The extending directions of the second protective sheaths 214 are arranged in a staggered manner, 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 . 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, 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.

In some embodiments, the first electrode 111 and the second electrode 211 are relatively independent when working, that is, the number of working electrodes can be controlled.

In this embodiment, as shown in FIG. 3 , the first electrode 111 has an electrode surface 1110 disposed toward the tissue to be ablated, and the first protective sheath 113 has a protective sheath surface 1130 disposed toward the tissue to be ablated; wherein, the electrode surface 1110 is located on the The protective sheath 1130 is close to 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. 2, 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 .

In some embodiments, 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 ablation between the two corresponding first electrodes 111 and the second electrodes 211 Tissue impedance and/or RF power.

In some embodiments, 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 connectors connected to the lead connector. The provided wires, each 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 wire connectors for inserting the first electrode assembly 100 a plurality of first ablation interfaces, the second ablation interface portion has a plurality of second ablation interfaces for inserting a plurality of lead wires of the second electrode assembly 200, so as to connect to the The corresponding first electrodes 111 and the corresponding second electrodes 211 provide suitable radio frequency power.

In some embodiments, 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 the first electrode assembly 100 and the second electrode assembly 200 each include a plurality of The electromagnet assembly, 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 The 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 the second electrode assembly 200 The plurality of second magnetic interfaces are inserted to supply power to the corresponding first magnetic member 112 and the corresponding second magnetic member 212 through each of the first magnetic interface and each second magnetic interface, so that the corresponding first magnetic member 112 and The attraction force is generated between the corresponding second magnetic members 212 .

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

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 (first electrode assembly) of the present disclosure, the electrode assembly includes a first electrode tip 110 , and the first electrode tip 110 includes a first protective sheath 113 , and a pull-in position provided on the first protective sheath 113 117 and the electrode 111 and the filling member 116 disposed in the first protective sheath 113, so that the first protective sheath 113 is positioned on the tissue to be ablated by the action of the suction and positioning member 117; and the electrode 111 is squeezed by the filling member 116 Press to move the electrode 111 toward the part to be ablated, so that the electrode 111 can fit with the inner wall of the first protective sheath 113, and the outer wall of the first protective sheath 113 at the corresponding position is fitted with the corresponding part to be ablated, thereby It is ensured that the electrode 111 can better act on the corresponding part to be ablated to ensure the ablation effect; it can be seen that the use of the first electrode assembly can solve the problem of unsatisfactory ablation effect of the medical interventional ablation device in the prior art.

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 extending direction of the first protective sheath, that is, a plurality of first electrodes simultaneously act on the epicardial tissue to form a complete ablation line. When the first protective sheath is made of a flexible material, the existing The angle of surgical instruments is limited and the 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 (first electrode assembly), so the ablation device has at least the same technical effect as the first 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 having a first electrode tip 110 and a second electrode assembly 200 having a second electrode tip 210 . An electrode tip 110 includes a first protective sheath 113 , a first electrode 111 , a suction positioning member 117 and a filling member 116 . The first electrode 111 is disposed in the first protective sheath 113 ; the suction positioning member 117 is disposed in the first protective sheath on the sheath 113, so that the first protective sheath 113 is positioned at the site to be ablated by the action of the suction and positioning member 117; the filling member 116 is arranged in the cavity of the first protective sheath 113, and at least part of the filling member 116 is arranged to be expandable and contractible , so as to squeeze the first electrode 111 toward the site to be ablated when the filler 116 expands; wherein, the second electrode tip 210 includes a second electrode 211, and the second electrode 211 is disposed opposite to the first electrode 111 to pass the first electrode 111. An electrode 111 and a second electrode 211 ablate the site to be ablated between 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 having a first electrode tip 110 and a second electrode assembly 200 having a second electrode tip 210, the first electrode tip 110 including a first protection The sheath 113 , the suction positioning member 117 disposed on the first protective sheath 113 , the first electrode 111 and the filling member 116 disposed in the first protective sheath 113 , so that the first protective sheath 113 can pass through the suction positioning member 117 . The first electrode 111 is pressed by the filler 116 to move the first electrode 111 toward the part to be ablated, so that the first electrode 111 can fit with the inner wall of the first protective sheath 113, The outer wall of the first protective sheath 113 at the corresponding position is attached to 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 and ensure the ablation effect; the second electrode tip 210 The second electrode 211 opposite to the first electrode 111 is included 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 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.

In some embodiments, the ablation device further includes an ablation circuit 320 , and the first electrode 111 and the second electrode 211 are both disposed on the ablation circuit 320 to adjust the impedance by testing the impedance between the first electrode 111 and the corresponding second electrode 211 Ablation is performed by radio frequency energy between the first electrode 111 and the second electrode 211 .

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 The RF power between the first electrode 111 and the second electrode 211 is adjusted by impedance, and when the impedance reaches a certain resistance value, the machine alarms that the ablation is completed, so as to avoid excessive ablation, so as to solve the problem of the limited depth and difficulty of unilateral ablation in the prior art interventional ablation. It ensures the complete dehydration and degeneration of the tissue from the inside to the outside, and at the same time 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. 2 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 An electrode 111 and a plurality of second electrodes 211, so that the plurality of first electrodes 111 and the plurality of second electrodes 211 can simultaneously act on their corresponding parts to be ablated, so as to ensure the ablation effect and improve the 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 .

In some embodiments, as shown in FIG. 2 , the first protective sheath 113 is strip-shaped; the plurality of first electrodes 111 are arranged at intervals along the extending direction of the first protective sheath 113 ; that is, the plurality of first electrodes 111 act on the The corresponding part to be ablated to form a complete ablation line.

In this embodiment, another structural form of the filler 116 is: 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 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; each filler 116 is arranged on the side of the corresponding first electrode 111 away from the part to be ablated, 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. In some embodiments, each filling member 116 is an airbag structure, so that when the airbag structure is inflated and inflated, the corresponding first electrode 111 is squeezed.

Optionally, there are multiple pull-in positioning members 117 .

In this embodiment, an arrangement of the plurality of suction positioning members 117 is as follows: the plurality of suction positioning members 117 are arranged at intervals along the extending direction of the first protective sheath 113 , so that the first protective sheath 113 is stably positioned on the On the site to be ablated, the positioning effect of the first protective sheath 113 is guaranteed.

A plurality of pairs of suction positioning members 117 are arranged at intervals along the extension direction of the first protective sheath 113, so that the first protective sheath 113 is stably positioned on the site to be ablated, and the positioning effect of the first protective sheath 113 is ensured, thereby ensuring the first protective sheath 113. The overall fit between the sheath 113 and the tissue to be ablated is such that each first electrode 111 can better act on the corresponding tissue to be ablated, thereby ensuring the ablation effect.

In some embodiments, 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 protrudes from the cavity of the first protective sheath 113 through the opening structure, In this way, the 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 the corresponding part to be ablated, so as to further ensure the ablation effect , 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.

In this embodiment, a setting method of the filling member 116 is as follows: the inner wall of the first protective sheath 113 is provided with an accommodating groove, and when the filling member 116 is in a contracted state, the filling member 116 is accommodated in the accommodating groove; When the filler 116 is in the expanded state, at least a part of the filler 116 is protruded from the accommodating groove to press the first electrode 111 toward the site to be ablated.

In this embodiment, another arrangement of the filling member 116 is as follows: the first electrode 111 and/or the first magnetic member 112 are provided with a positioning groove for accommodating the airbag structure. When the filling member 116 is in a contracted state, The filler 116 is accommodated in the positioning groove. When the filler 116 is in an expanded state, at least part of the filler 116 is protruded from the positioning groove to press the first electrode 111 toward the site to be ablated.

In some embodiments, the first electrode assembly 100 further includes a first magnetic member 112 , and the first magnetic member 112 is disposed in the first protective sheath 113 .

In some embodiments, the second electrode tip 210 includes a second protective sheath, and the plurality of second electrodes 211 are sheathed on the second protective sheath.

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 some embodiments, 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 . In some embodiments, 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 is used 112 separates the corresponding two first electrodes 111 .

In some embodiments, 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 214 . In some embodiments, 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. The corresponding two second electrodes 211 are separated. 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 some embodiments, the first electrode 111 and the second electrode 211 are relatively independent electrodes when working, that is, the number of working electrodes can be controlled.

In this embodiment, as shown in FIG. 3 , 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.

In some embodiments, 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 tissue to be ablated between the two corresponding first electrodes and the second electrodes 211 . impedance and/or RF power.

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.

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 suction positioning member (117), the suction positioning member (117) is arranged on the first protective sheath (113), so that the first protective sheath (113) passes through the suction positioning member (117) ) is positioned in the tissue to be ablated;

A filler (116), the filler (116) is arranged in the cavity of the first protective sheath (113), and at least a part of the filler (116) is inflatable and retractable, so as to be in the filler (116) When the expansion occurs, the first electrode (111) is pressed toward the tissue to be ablated.
The electrode assembly according to claim 1, wherein the first protective sheath (113) is strip-shaped,

There are a plurality of the first electrodes (111), and the plurality of the first electrodes (111) are arranged at intervals along the extending direction of the first protective sheath (113); and/or

There are multiple suction positioning members (117), and the multiple suction positioning members (117) are arranged at intervals along the extending direction of the first protective sheath (113).
The electrode assembly according to claim 1 or 2, wherein the first protective sheath (113) is strip-shaped,

There are a plurality of the filling members (116), and the plurality of the filling members (116) are arranged at intervals along the extending direction of the first protective sheath (113) and can be independently controlled; and/or

The filler (116) is in the shape of a bar, and the filler (116) extends along the extending direction of the first protective sheath (113).
The electrode assembly according to any one of claims 1 to 3, wherein the suction and positioning member (117) is a suction cup structure; and/or the filling member (116) is a balloon structure.
The electrode assembly according to any one of claims 1 to 4, 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 of claim 5, wherein,

There are a plurality of the first electrodes (111), the opening structure includes a plurality of avoidance openings, and the plurality of the avoidance openings are arranged in a one-to-one correspondence with the plurality of the first electrodes (111), so that the 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; and/or

There are a plurality of the first electrodes (111), the opening structure is a strip-shaped opening, and the strip-shaped openings are spaced along the extending direction of the first protective sheath (113), and the plurality of first electrodes (111) Part of the structure of 111) protrudes to the outside of the first protective sheath (113) through the bar-shaped opening.
The electrode assembly according to any one of claims 1 to 6, wherein a receiving groove is provided on the inner wall of the first protective sheath (113), and when the filler (116) is in a contracted state, the The filler (116) is accommodated in the accommodating groove; when the filler (116) is in an expanded state, at least part of the filler (116) is protruded from the accommodating groove to remove the The first electrode (111) is pressed towards the tissue to be ablated.
The electrode assembly according to any one of claims 1 to 7, further comprising a first magnetic member (112), the first magnetic member (112) being disposed in the first protective sheath (113); the The first electrode (111) and/or the first magnetic member (112) are provided with a positioning groove for accommodating the filling member (116).
The electrode assembly according to claim 8, wherein a plurality of the first electrodes (111) and the first magnetic members (112) are both, a plurality of the first electrodes (111) and a plurality of the first electrodes (111) The first magnetic parts (112) are arranged in a staggered sequence along the extending direction of the first protective sheath (113).
The electrode assembly according to claim 8 or 9, wherein the first electrode (111) and/or the first magnetic member (112) are provided with wire laying grooves (120) for accommodating wires, the A wire is used to connect with the first electrode (111).
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 10, 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 opposite to the tissue to be ablated by the first electrode (111) and the second electrode (211). Perform ablation.
The ablation device of claim 11, 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.
The ablation device according to claim 11 or 12, wherein the first protective sheath (113) is strip-shaped; both the first electrode (111) and the second electrode (211) are a plurality of A plurality of the first electrodes (111) and a plurality of the second electrodes (211) are arranged in cooperation with each other, and the plurality of the first electrodes (111) are arranged at intervals along the extending direction of the first protective sheath (113) .
The ablation device according to any one of claims 11 to 13, wherein the first electrode assembly (100) further comprises a first magnetic member (112), the first magnetic member (112) being arranged on the inside the first protective sheath (113); the second electrode assembly (200) further includes a second magnetic member (212) disposed on the second electrode tip (210), the first magnetic member (112) It is matched with the second magnetic member (212), so that the first electrode end (110) and the second electrode end (210) are relatively fixed.
A radio frequency ablation device, comprising a radio frequency host (310) and an ablation device connected to the radio frequency host (310), the ablation device being the ablation device according to any one of claims 11 to 14.