Atrial fibrillation treatment device

Abstract

The atrial fibrillation treatment device comprises a movement mechanism, the movement mechanism comprises a supporting piece, a first electrode piece and a first conducting medium, the area of the first end of the supporting piece is sunken inwards to form a containing cavity with an opening, the first electrode piece is arranged in the containing cavity, and the discharging end of the first electrode piece is communicated with the outside through the opening; the discharge end of the first electrode piece is lower than the surface of the first end; the discharge end is provided with a first conductive medium, and the first conductive medium is used for blocking heat transfer of the first electrode piece. The discharge end of the first electrode piece is lower than the first end, so that a gap is formed between the first electrode piece and the tissue cell when the surface of the first end is in contact with the tissue cell, and the direct contact between the discharge end of the first electrode piece and the tissue cell can be avoided; therefore, the atrial fibrillation treatment device can be prevented from hurting tissue cells during ablation. According to the structural form, the risk of short circuit of the first electrode piece can be avoided, and accidents are avoided.

Description

Technical Field

[0001] The invention relates to an atrial fibrillation treatment device. Background Art

[0002] In recent years, energy ablation has been used to replace the traditional "cutting and suturing" method to treat atrial fibrillation. The main energy forms currently include cryoablation, radiofrequency, microwave, pulse, ultrasound, etc. Radiofrequency and cryoablation are both thermal ablation techniques. However, thermal ablation by conduction heating or cooling of myocardial tissue also reveals important disadvantages. The time dependence of temperature transfer and lesion formation requires the catheter to be kept stable for a considerable period of time, and high / low tissue temperature can cause collateral damage to surrounding tissues such as the coronary arteries, phrenic nerves, and esophagus. Whether it is a pulse ablation procedure or a radiofrequency ablation procedure, the electrode needs to be in direct contact with the heart tissue to discharge, generating heat that causes tissue burns. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing technology that radiofrequency and cryoablation are both thermal ablation technologies. However, thermal ablation by conduction heating or cooling of myocardial tissue also reveals important shortcomings. The time dependence of temperature transfer and lesion formation requires the catheter position to be kept stable for a considerable period of time, and high / low tissue temperature will cause collateral damage to surrounding tissues such as coronary arteries, phrenic nerves and esophagus. Whether it is a pulse ablation surgery or a radiofrequency ablation surgery, it requires the electrode to be in direct contact with the heart tissue to discharge, generating heat and causing tissue burns. Provided is an atrial fibrillation treatment device.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present invention relates to an atrial fibrillation treatment device, which includes a movement mechanism, which includes a support member, a first electrode member and a first conductive medium. The area of ​​the first end of the support member is recessed inward to form a accommodating cavity with an opening. The first electrode member is arranged in the accommodating cavity. The discharge end of the first electrode member is connected to the outside through the opening. The height of the discharge end of the first electrode member is lower than the surface height of the first end. The discharge end is provided with the first conductive medium, and the first conductive medium is used to hinder the transfer of heat of the first electrode member.

[0006] In this solution, the height of the discharge end of the first electrode member is lower than the height of the first end, so that there is a gap between the first electrode member and the tissue cells, thereby avoiding direct contact between the discharge end of the first electrode member and the tissue cells, and further avoiding the atrial fibrillation treatment device from causing damage to the tissue cells during ablation. In addition, the above-mentioned structural form can avoid the risk of short circuit in the first electrode member, thereby avoiding accidents. The discharge end is provided with a first conductive medium, which can avoid direct contact between the first electrode member and the tissue cells, and the first conductive medium can hinder the transfer of heat from the first electrode member, avoiding heat concentration and causing tissue cell burns, thereby further avoiding cell damage and burns caused by high-frequency current of pulse discharge during surgery.

[0007] Preferably, the atrial fibrillation treatment device further comprises a second conductive medium, a groove communicating with the accommodating cavity is provided on the region, the second conductive medium is arranged in the groove, and the second conductive medium is used to hinder the transfer of heat of the first electrode member.

[0008] In this solution, by adopting the above-mentioned structural form, the second conductive medium can hinder the transfer of heat from the first electrode member, thereby avoiding heat concentration and causing tissue cell burns.

[0009] Preferably, the first electrode member comprises an electrode sheet and a cooling member, the electrode sheet is connected to the cooling member, and the discharge end is arranged at an end of the electrode sheet away from the cooling member.

[0010] In this solution, the above-mentioned structural form is adopted, and the temperature of the electrode sheet can be controlled by the cooling element to avoid excessive heat energy of the electrode sheet during use, which may cause damage to other tissue cells. This can avoid affecting the operation due to excessive heat generation, improve the efficiency of the operation, and facilitate the doctor to control the discharge frequency of the atrial fibrillation treatment.

[0011] Preferably, the atrial fibrillation treatment device further comprises a housing, a connecting member and a pushing member, wherein the connecting member passes through the housing and is slidably connected to the housing, one end of the connecting member is connected to the motion mechanism, and the other end of the connecting member is connected to the pushing member, and the pushing member is used to push the connecting member to move relative to the housing;

[0012] An extension direction of the movement mechanism forms an angle with an extension direction of the connection member.

[0013] In this solution, the above-mentioned structural form is adopted, and the connecting member is pushed by the pushing member to move relative to the shell, so that the moving mechanism can be driven to move by the connecting member, and then the first electrode member can be sent to the specified position by the moving mechanism and the target cells can be clamped and fixed, so as to facilitate the subsequent ablation. In addition, the extension direction of the moving mechanism is at an angle to the extension direction of the connecting member, which can provide a better field of view for the doctor, prevent the doctor's field of view from being blocked, facilitate the doctor's operation, shorten the operation time, and reduce the patient's pain.

[0014] Preferably, the connecting member includes a first connecting part, a second connecting part, a first damper and a second damper, the two ends of the first damper are respectively connected to the shell and the first connecting part, the two ends of the second damper are respectively connected to the first connecting part and the second connecting part, and the pushing member is arranged at an end of the second connecting part away from the first connecting part; the damping coefficient of the first damper is smaller than the damping coefficient of the second damper.

[0015] In this solution, the above-mentioned structural form can adapt to tissues of different thicknesses, making the operation more convenient for the operator and improving efficiency.

[0016] Preferably, the motion mechanism further includes a fixing member, the second damper is connected to the first connection portion via the fixing member, the fixing member extends in a direction close to the second connection portion, and the second connection portion penetrates the fixing member and is slidably connected to the fixing member.

[0017] In this solution, by adopting the above-mentioned structural form, the fixing member can provide guidance for the second connecting part, so that the second connecting part can move in a certain direction, thereby improving the stability and reliability of the movement of the second connecting part.

[0018] Preferably, the atrial fibrillation treatment device comprises a guide rail and a slider, wherein the guide rail extends along the movement direction of the movement mechanism, and one of the guide rail and the slider is arranged on the movement mechanism, and the other is connected to the shell.

[0019] In this solution, the above-mentioned structural form is adopted, and through the cooperation of the guide rail and the slider, a guide can be provided for the movement of the motion mechanism, so that the motion mechanism can move in a certain direction, thereby improving the stability and reliability of the motion mechanism.

[0020] Preferably, the atrial fibrillation treatment device also includes a support member, which is connected to one end of the shell close to the moving mechanism; the moving mechanism moves in a direction close to or away from the support member, and a second electrode member is provided in the support member, and there is an electric potential difference between the first electrode member and the second electrode member.

[0021] In this solution, the above-mentioned structural form is adopted, and the moving mechanism moves in the direction close to the support member so that a clamp can be formed between the moving mechanism and the support member, so that the first electrode member can be sent to the specified position through the moving mechanism and the target cells can be clamped and fixed, thereby facilitating subsequent ablation.

[0022] Preferably, the atrial fibrillation treatment device also includes a control unit, which is movably connected to the shell, and one of the pushing member and the control unit is provided with a protrusion, and the other is provided with a recess that matches the protrusion, and when the pushing member moves to a preset position, the protrusion and the recess match.

[0023] In the present solution, the above-mentioned structural form is adopted. When the pushing member moves to the preset position, when the protrusion and the depression coincide in the axial direction of the depression, the protrusion extends into the depression and cooperates with the depression, so that the pushing member will not move relative to the control part, thereby controlling the movement of the connecting member; when the protrusion and the depression do not cooperate, the pushing member can move relative to the control part, and the connecting member can slide relative to the shell.

[0024] Preferably, the support member comprises a support body and an insulating portion, the insulating portion is connected to the support body, and the first end is arranged at an end of the insulating portion away from the support body.

[0025] In this solution, the support body can provide strong support for the first electrode member. In addition, by adopting the above-mentioned structural form, the accommodating cavity is opened on the insulating part, and the first electrode member is placed in the accommodating cavity, which can avoid the first electrode member from short-circuiting during discharge and avoid causing harm to the user.

[0026] The positive and progressive effects of the present invention are:

[0027] The height of the discharge end of the first electrode is lower than the height of the first end, so that there is a gap between the first electrode and the tissue cells, thereby avoiding direct contact between the discharge end of the first electrode and the tissue cells, and further avoiding the atrial fibrillation treatment device from causing damage to the tissue cells during ablation. In addition, the above-mentioned structural form can avoid the risk of short circuit in the first electrode and avoid accidents. The discharge end is provided with a first conductive medium, which can avoid direct contact between the first electrode and the tissue cells, and the first conductive medium can hinder the transfer of heat from the first electrode, avoiding heat concentration and causing tissue cell burns, thereby further avoiding cell damage and burns caused by high-frequency current of pulse discharge during surgery. In addition, the dual damping system can adapt to tissues of different thicknesses, which is more convenient for the operator's operation and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of an atrial fibrillation treatment device according to an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of the first part of the atrial fibrillation treatment device according to an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the second part of the atrial fibrillation treatment device according to an embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the third part of the atrial fibrillation treatment device according to an embodiment of the present invention;

[0032] Figure 5 It is a schematic diagram of the fourth part of the atrial fibrillation treatment device according to an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] Atrial Fibrillation Treatment Device 100

[0035] Sports Mechanism 1

[0036] Support 11

[0037] Accommodating chamber 111

[0038] Insulation part 112

[0039] Support body 113

[0040] Opening 114

[0041] The first electrode 12

[0042] Electrode sheet 121

[0043] Cooling element 122

[0044] Slot 13

[0045] The first conductive medium 14

[0046] Shell 2

[0047] Handheld housing 21

[0048] Axle cylinder 22

[0049] Pusher 3

[0050] Rail 4

[0051] Control unit 5

[0052] Tail line 6

[0053] Connector 8

[0054] First connection portion 81

[0055] The second connection portion 82

[0056] First damping 83

[0057] Second damping 84

[0058] Fixing parts 85

[0059] Slider 9

[0060] Support 10 DETAILED DESCRIPTION

[0061] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0062] like Figures 1 to 5 As shown, this embodiment provides an atrial fibrillation treatment device 100, which includes a motion mechanism 1, and the motion mechanism 1 includes a support member 11, a first electrode member 12, and a first conductive medium 14. The area of ​​the first end of the support member 11 is recessed inward to form a receiving cavity 111 with an opening 114. The first electrode member 12 is arranged in the receiving cavity 111. The discharge end of the first electrode member 12 is connected to the outside through the opening 114, and the height of the discharge end of the first electrode member 12 is lower than the surface height of the first end; the discharge end is provided with a first conductive medium 14, and the first conductive medium 14 is used to hinder the transfer of heat of the first electrode member 12. Specifically, the height of the discharge end of the first electrode member 12 is lower than the surface height of the first end, so that there is a gap between the first electrode member 12 and the tissue cells, so that the discharge end of the first electrode member 12 can be prevented from directly contacting the tissue cells, and further, the atrial fibrillation treatment device 100 can be prevented from causing damage to the tissue cells during ablation. In addition, the above-mentioned structural form can avoid the risk of short circuit of the first electrode member 12 and avoid accidents. The discharge end is provided with a first conductive medium 14, which can prevent the first electrode 12 from directly contacting the tissue cells, and the first conductive medium 14 can hinder the heat transfer of the first electrode 12, thereby preventing the heat from concentrating and causing tissue cells to be burned, thereby further preventing cell damage and burning caused by the high-frequency current of the pulse discharge during the operation. Figure 3 The discharge end of the first electrode member 12 is Figure 3 The height of the discharge end mentioned above is lower than the surface height of the first end. Figure 3 The height of the upper surface of the middle insulating portion 112 is lower than the height of the upper surface of the insulating portion 112. In addition, in this embodiment, the first conductive medium 14 is a conductor or a combination of conductors. In other embodiments, the first conductive medium 14 can also be in other forms, which are not limited here.

[0063] In specific use, there is a layer of hydrophilic coating on the inner surface of the accommodating cavity 111. In addition, the first conductive medium 14 can also constrain the electric field, so that the atrial fibrillation treatment device can achieve ablation of target cells.

[0064] like Figure 2 As shown, the atrial fibrillation treatment device 100 also includes a second conductive medium, a groove 13 connected to the accommodating cavity 111 is provided in the region, and the second conductive medium is arranged in the groove 13, and the second conductive medium is used to hinder the heat transfer of the first electrode member 12. With the above-mentioned structural form, the second conductive medium can hinder the heat transfer of the first electrode member 12, thereby avoiding the heat concentration and causing tissue cell burns.

[0065] In this embodiment, the diameter of the groove 13 is between 0.1 mm and 2 mm. In other embodiments, the size of the groove 13 can be adjusted according to actual needs and is not limited here.

[0066] See also Figure 3 It is understood that the first electrode member 12 includes an electrode sheet 121 and a cooling member 122, the electrode sheet 121 is connected to the cooling member 122, the cooling member 122 is used to cool the electrode sheet 121, and the discharge end is arranged at one end of the electrode sheet 121 away from the cooling member 122. With the above-mentioned structural form, the temperature of the electrode sheet 121 can be controlled by the cooling member 122 to avoid excessive heat energy of the electrode sheet 121 during use, which may cause damage to other tissue cells, thereby avoiding the influence of excessive heat generation on the operation, improving the efficiency of the operation, and facilitating the doctor's control of the discharge frequency for the treatment of atrial fibrillation. In specific use, the cooling member 122 is a coolant, and the coolant circulates at the end of the electrode sheet 121 away from the discharge end.

[0067] In this embodiment, the electrode sheet 121 may be made of a medical metal with good conductivity, such as gold, platinum, platinum-iridium alloy, 304 stainless steel, 306 stainless steel, etc. In specific use, the electrode sheet 121 may be formed by combining several segments (1-6 segments). Figure 2 As shown, this embodiment is described by taking three sections as an example. In other embodiments, the number of electrode sheets 121 can be adjusted according to actual needs and is not limited here.

[0068] like Figure 1As shown, the atrial fibrillation treatment device 100 also includes a shell 2, a connector 8 and a pusher 3. The connector 8 passes through the shell 2 and is slidably connected to the shell 2. One end of the connector 8 is connected to the motion mechanism 1, and the other end of the connector 8 is connected to the pusher 3. The pusher 3 is used to push the connector 8 to move relative to the shell 2; the extension direction of the motion mechanism 1 is at an angle to the extension direction of the connector 8. With the above-mentioned structural form, the connector 8 is pushed by the pusher 3 to move relative to the shell 2, so that the motion mechanism 1 can be driven to move by the connector 8, and then the first electrode member 12 can be sent to the specified position by the motion mechanism 1 and the target cells can be clamped and fixed, so as to facilitate the subsequent ablation. In addition, the extension direction of the motion mechanism 1 is at an angle to the extension direction of the connector 8, which can provide a better field of view for the doctor, prevent the doctor's field of view from being blocked, facilitate the doctor's operation, shorten the operation time, and reduce the patient's pain.

[0069] In specific use, the first electrode member 12 and the second electrode member are in the shape of a straight line segment with an arc as a trajectory at one end, a Z-shaped line segment, a circle, a semicircle, an ellipse, etc., with a thickness between 0.05 mm and 3 mm.

[0070] In this embodiment, the shell 2 is made of a high-strength medical material, and the shell 2 includes a handheld housing 21 and a shaft cylinder 22, and the handheld housing 21 is connected to the shaft cylinder 22. One end of the connecting member 8 passes through the handheld housing 21 and the shaft cylinder 22 in sequence and is connected to the motion mechanism 1, and the other end of the connecting member 8 is connected to the pusher 3. The shaft cylinder 22 can be made of a high-strength medical non-metallic material or a medical metal material, and the length can be 80-300 mm.

[0071] like Figure 1 As shown, in this embodiment, the pusher 3 is T-shaped, so that the operator can grasp it easily. In other embodiments, the shape of the pusher 3 can be adjusted according to actual needs, and no limitation is made here. In specific use, the material of the pusher 3 is a mobile polymer material with high strength and good insulation. In other embodiments, the material of the pusher 3 can be adjusted according to actual needs, and no limitation is made here.

[0072] See also Figure 4 and Figure 5 It is understood that the connecting member 8 includes a first connecting portion 81, a second connecting portion 82, a first damper 83 and a second damper 84. The two ends of the first damper 83 are respectively connected to the housing 2 and the first connecting portion 81, and the two ends of the second damper 84 are respectively connected to the first connecting portion 81 and the second connecting portion 82. The pusher 3 is arranged at one end of the second connecting portion 82 away from the first connecting portion 81; the damping coefficient of the first damper 83 is smaller than the damping coefficient of the second damper 84. The above structural form can adapt to tissues of different thicknesses, which is more convenient for the operator to operate and improves efficiency.

[0073] In this embodiment, the length of the connecting member 8 may be 80 mm-400 mm.

[0074] The connecting member 8 is a double damping system, which can be in the following two forms. The first form is as follows: Figure 4 As shown, the two ends of the first damper 83 are connected to the housing 2 and the first connecting portion 81 respectively, and the rear end of the second damper 84 is connected to the first connecting portion 81, and the front end of the second damper 84 is connected to the second connecting portion 82. When the pusher 3 pushes the second connecting portion 82 to move in the direction close to the first connecting portion 81, since the damping coefficient of the first damper 83 is smaller than the damping coefficient of the second damper 84, the first damper 83 is compressed first, and the compression of the first damper 83 does not affect the movement of the second damper 84. When the first damper 83 is compressed in place, the first connecting portion 81 will not continue to move, and the second connecting portion 82 pulls the front end of the second damper 84 to continue to move, so that the second damper 84 is stretched, and then the second connecting portion 82 continues to move to the preset position. When the external force is withdrawn from the pusher 3 and the connector 8 is restored to its initial position, the first damper 83 is restored first due to the larger damping coefficient of the second damper 84. When the first damper 83 is restored to a certain state, the second damper 84 begins to restore, and finally the connector 8 is restored to its initial position. Figure 5 As shown, the two ends of the first damper 83 are connected to the housing 2 and the first connecting portion 81 respectively, and the front end of the second damper 84 is connected to the first connecting portion 81, and the rear end of the second damper 84 is connected to the second connecting portion 82. When the pusher 3 pushes the second connecting portion 82 to move in the direction close to the first connecting portion 81, since the damping coefficient of the first damper 83 is smaller than the damping coefficient of the second damper 84, the first damper 83 is compressed first, and the compression of the first damper 83 does not affect the movement of the second damper 84. When the first damper 83 is compressed in place, the first connecting portion 81 will not continue to move, and the second connecting portion 82 drives the rear end of the second damper 84 to continue to move, so that the second damper 84 is compressed, and then the second connecting portion 82 continues to move to the preset position. When the external force is withdrawn from the pushing member 3 and the connecting member 8 returns to its initial position, since the damping coefficient of the second damping 84 is larger, the first damping 83 is restored first. When it returns to a certain state, the second damping 84 starts to recover, and finally the connecting member 8 is restored to its initial position.

[0075] In this embodiment, the double damping system can provide the operator with a more comfortable operation mode. In addition, the above structure has the characteristics of simple structure.

[0076] In this embodiment, the following preload formula is used:

[0077] F 1预 >A

[0078] F2预 >F 1预 +X max ×K2+A

[0079] F 1预 : preload force of the first damper 83;

[0080] A: Maximum friction constant based on the undamped natural motion of the clip;

[0081] F 2预 : preload force of the second damper 84;

[0082] X max : Maximum displacement of the proximal clamp;

[0083] K1: damping coefficient of the second damper 84 .

[0084] In other embodiments, the form of the damping system can be adjusted according to actual needs. For example, the positions of the first damper 83 and the second damper 84 can be staggered. The form of the damping system and the directions of the two dampers are not limited herein.

[0085] During specific use, a preload rod is connected to one end of the second connection portion 82 close to the first connection portion 81 , and the second connection portion 82 is connected to the second damper 84 via the preload rod.

[0086] like Figure 4 and Figure 5 As shown, the motion mechanism 1 also includes a fixing member 85, and the second damper 84 is connected to the first connection part 81 through the fixing member 85, and the fixing member 85 extends in a direction close to the second connection part 82, and the second connection part 82 passes through the fixing member 85 and is slidably connected to the fixing member 85. With the above-mentioned structural form, the fixing member 85 can provide guidance for the second connection part 82, so that the second connection part 82 can move in a certain direction, thereby improving the stability and reliability of the movement of the second connection part 82. In the first form, the rear end of the second damper 84 is connected to the first connection part 81 through the fixing member 85, and the fixing member 85 extends in a direction close to the second connection part 82. After the second connection part 82 passes through the fixing member 85, the front end of the second connection part 82 is connected to the front end of the second damper 84. In the second form, the front end of the second damper 84 is connected to the first connection part 81 through the fixing member 85, and the fixing member 85 extends in a direction close to the second connection part 82, at which time the front end of the second connection part 82 passes through the fixing member 85, and the second connection part 82 is slidably connected to the fixing member 85.

[0087] See also Figure 1It is understood that the atrial fibrillation treatment device 100 includes a guide rail 4 and a slider 9, the guide rail 4 extends along the movement direction of the motion mechanism 1, one of the guide rail 4 and the slider 9 is arranged on the motion mechanism 1, and the other is connected to the housing 2. With the above-mentioned structural form, the cooperation of the guide rail 4 and the slider 9 can provide guidance for the movement of the motion mechanism 1, so that the motion mechanism 1 can move in a certain direction, thereby improving the stability and reliability of the movement of the motion mechanism 1.

[0088] In specific use, the guide rail 4 is connected to the end of the shaft cylinder 22 away from the hand-held housing 21, and the slider 9 is arranged on the motion mechanism 1, so that the cooperation between the guide rail 4 and the slider 9 provides guidance for the movement of the motion mechanism 1. In this embodiment, the slider 9 is a tapered guide column, and its taper can be 0-1 degree. In other embodiments, the form of the slider 9 may not be limited. In addition, if Figure 2 As shown, this embodiment is described with two sliders 9 . In other embodiments, the number of sliders 9 can be adjusted according to actual needs, and the number of sliders 9 is not specifically limited here.

[0089] like Figure 1 , Figure 4 and Figure 5 As shown, the atrial fibrillation treatment device 100 also includes a support member 10, which is connected to one end of the housing 2 close to the motion mechanism 1; the motion mechanism 1 moves in a direction close to or away from the support member 10, and a second electrode member is arranged in the support member 10, and there is a potential difference between the first electrode member 12 and the second electrode member. With the above-mentioned structural form, the motion mechanism 1 moves in a direction close to the support member 10, so that a clamping can be formed between the motion mechanism 1 and the support member 10, so that the first electrode member 12 can be sent to a designated position through the motion mechanism 1 and the target cells can be clamped and fixed, thereby facilitating the subsequent ablation. In specific use, the support member 10 is connected to one end of the guide rail 4 away from the shaft cylinder 22, so that the shaft cylinder 22 can provide restraint and support for the guide rail 4 and the support member 10. In this embodiment, the form of the support member 10 is the same as that of the motion mechanism 1, that is, the support member 10 also includes a support member 11 and a first conductive medium 14, and a receiving cavity 111 is also provided on the support member 11, and the second electrode member is also arranged in the receiving cavity 111. In addition, a potential difference between the first electrode member 12 and the second electrode member exists when power is applied.

[0090] like Figure 1As shown, the atrial fibrillation treatment device 100 also includes a control unit 5, which is movably connected to the housing 2. One of the pusher 3 and the control unit 5 is provided with a protrusion, and the other is provided with a depression that matches the protrusion. When the pusher 3 moves to the preset position, the protrusion and the depression match. With the above-mentioned structural form, when the pusher 3 moves to the preset position, the protrusion and the depression overlap in the direction of the axis of the depression, the protrusion extends into the depression and matches with the depression, so that the pusher 3 will not move relative to the control unit 5, thereby controlling the movement of the connecting member 8; when the protrusion and the depression do not match, the pusher 3 can move relative to the control unit 5, thereby causing the connecting member 8 to slide relative to the housing 2. In this embodiment, the control unit 5 is a control button, and its material is a medical polymer material with high strength and good insulation. The atrial fibrillation treatment device 100 also includes a tail line 6, and the tail line 6 is formed by nesting a combination of multiple wire shielding layer auxiliary lines, and is used to connect the pulse device and the discharge electrode through the high-voltage resistant PIN105 to provide a pulse electrical circuit.

[0091] In this embodiment, the control part 5 is provided with an elastic protrusion, and the pusher 3 is provided with a depression at a preset position. When the elastic protrusion moves to the depressed position, under the action of the spring, the protrusion extends into the depression and cooperates with the depression. Under the action of external force, the elastic protrusion is separated from the depression. At this time, driven by the first damper 83 and the second damper 84, the pusher 3 returns to the initial position. In specific use, the preset position referred to above refers to the position between the motion mechanism 1 and the support member 10 that can clamp the target cell.

[0092] like Figure 2 As shown, the support member 11 includes a support body 113 and an insulating portion 112, the insulating portion 112 is connected to the support body 113, and the first end is arranged at an end of the insulating portion 112 away from the support body 113. The support body 113 can provide strong support for the first electrode member 12. In addition, by adopting the above-mentioned structural form, the accommodating cavity 111 is opened on the insulating portion 112, and the first electrode member 12 is placed in the accommodating cavity 111, which can avoid the first electrode member 12 from short-circuiting during discharge, thereby avoiding harm to the user.

[0093] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An atrial fibrillation treatment device, characterized in that: The atrial fibrillation treatment device comprises a motion mechanism, the motion mechanism comprises a support member, a first electrode member and a first conductive medium, the region of the first end of the support member is recessed inwardly to form a receiving cavity with an opening, the first electrode member is arranged in the receiving cavity, the discharge end of the first electrode member is connected to the outside through the opening, and the height of the discharge end of the first electrode member is lower than the surface height of the first end; The discharge end is provided with the first conductive medium, and the first conductive medium is used to hinder the transfer of heat of the first electrode member.

2. The atrial fibrillation treatment device according to claim 1, characterized in that: The atrial fibrillation treatment device also includes a second conductive medium. A groove communicating with the accommodating cavity is provided on the region. The second conductive medium is arranged in the groove. The second conductive medium is used to hinder the transfer of heat of the first electrode member.

3. The atrial fibrillation treatment device according to claim 1, characterized in that: The first electrode member includes an electrode sheet and a cooling member, the electrode sheet is connected to the cooling member, and the discharge end is arranged at an end of the electrode sheet away from the cooling member.

4. The atrial fibrillation treatment device according to claim 1, characterized in that: The atrial fibrillation treatment device further includes a housing, a connecting member and a pushing member, wherein the connecting member passes through the housing and is slidably connected to the housing, one end of the connecting member is connected to the motion mechanism, and the other end of the connecting member is connected to the pushing member, and the pushing member is used to push the connecting member to move relative to the housing; An extension direction of the movement mechanism forms an angle with an extension direction of the connection member.

5. The atrial fibrillation treatment device according to claim 4, characterized in that: The connecting member includes a first connecting part, a second connecting part, a first damper and a second damper, the two ends of the first damper are respectively connected to the shell and the first connecting part, the two ends of the second damper are respectively connected to the first connecting part and the second connecting part, and the pushing member is arranged at an end of the second connecting part away from the first connecting part; the damping coefficient of the first damper is smaller than the damping coefficient of the second damper.

6. The atrial fibrillation treatment device according to claim 5, characterized in that: The motion mechanism also includes a fixing member, the second damper is connected to the first connection portion via the fixing member, the fixing member extends in a direction close to the second connection portion, and the second connection portion penetrates the fixing member and is slidably connected to the fixing member.

7. The atrial fibrillation treatment device according to claim 4, characterized in that: The atrial fibrillation treatment device comprises a guide rail and a slider, wherein the guide rail extends along the movement direction of the movement mechanism, and one of the guide rail and the slider is arranged on the movement mechanism, and the other is connected to the shell.

8. The atrial fibrillation treatment device according to claim 4, characterized in that: The atrial fibrillation treatment device also includes a support member, which is connected to one end of the shell close to the moving mechanism; the moving mechanism moves in a direction close to or away from the support member, and a second electrode member is provided in the support member, and there is an electric potential difference between the first electrode member and the second electrode member.

9. The atrial fibrillation treatment device according to claim 4, characterized in that: The atrial fibrillation treatment device also includes a control unit, which is movably connected to the shell. One of the pushing member and the control unit is provided with a protrusion, and the other is provided with a recess that matches the protrusion. When the pushing member moves to a preset position, the protrusion and the recess match.

10. The atrial fibrillation treatment device according to claim 1, characterized in that: The support member includes a support body and an insulating portion, the insulating portion is connected to the support body, and the first end is arranged at an end of the insulating portion away from the support body.

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