Pulsed electric field ablation system for removing compression of coronary artery myocardial bridge on blood vessel
By using a pulsed electric field ablation system to perform ablation at the myocardial bridge site using electrodes inside the catheter and balloon, the problem of myocardial bridge compressing the coronary artery was solved, and safe and effective hemodynamic recovery was achieved.
Patent Information
- Application Number
- CN202510927373.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-07
- Publication Date
- 2025-09-09
AI Technical Summary
Existing methods for treating myocardial bridges cannot effectively relieve the mechanical compression on the coronary arteries, and there are problems of severe trauma and many complications.
A pulsed electric field ablation system is used to perform pulsed electric field ablation at the myocardial bridge site through the front and rear electrodes in the catheter and balloon, relieving the pressure of the myocardial bridge on the coronary artery and avoiding vascular complications.
It effectively relieves the mechanical compression of the myocardial bridge on the coronary artery, reduces hemodynamic abnormalities, avoids complications such as coronary artery occlusion and rupture, and the operation is safe and the recovery time is short.
Smart Images
Figure CN120605086A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical devices, in particular to a pulsed electric field ablation system for removing the compression of coronary myocardial bridge on blood vessels. Background Art
[0002] Myocardial bridge (MB) refers to a segment of a coronary artery that runs within the myocardium and is covered by myocardial fibers, forming a "bridge"-like structure. This covered segment is called a parietal coronary artery. Normally, the coronary artery lies within the subepicardial fatty tissue. However, the presence of a MB causes compression of this segment during systole, potentially leading to hemodynamic abnormalities.
[0003] The potential hazards of myocardial bridges include: 1. Myocardial ischemia: systolic blood vessel compression leads to reduced blood flow, which is especially significant in deep myocardial bridges and may cause angina pectoris and myocardial infarction. 2. Arrhythmia and sudden death: severe compression can induce ventricular arrhythmia, atrioventricular block, and even sudden death. 3. Risk of atherosclerosis: The proximal coronary artery wall is prone to atherosclerotic plaques due to abnormal blood flow shear force, increasing the risk of coronary heart disease. 4. Decreased exercise tolerance: During strenuous exercise or emotional fluctuations, myocardial oxygen consumption increases, which may aggravate ischemic symptoms. The degree of stenosis can be graded based on coronary angiography: Grade 1: systolic stenosis <50%; Grade 2: stenosis 50%~75%; Grade 3: stenosis >75%. Such patients are more likely to develop serious complications.
[0004] Current treatments have their own shortcomings and cannot address the problem of myocardial bridge compression. These include: 1. Medication: May relieve symptoms, but effectiveness is limited and may include side effects. 2. Myocardial bridge lysis: Distinguishing the myocardium from the arterial muscular layer makes complete compression difficult, and can easily damage the coronary arteries or surrounding myocardium. Postoperative scarring may also occur, leading to re-compression of the vessels and even worsening symptoms (especially in patients with scar tissue). The procedure requires a beating heart (in some cases), is technically demanding, and carries the risk of complications such as bleeding and arrhythmias. 3. Coronary artery bypass grafting (CABG): Requires open-chest surgery or cardiopulmonary bypass, is invasive, and requires a long recovery period. Elderly patients or those with comorbidities are at increased risk. The graft is at high risk of restenosis or occlusion due to hemodynamic changes. 4. Stent implantation: Stents can often deform, fracture, or dislodge due to the persistent mechanical pressure of the myocardial bridge, leading to in-stent restenosis or thrombosis (incidence exceeding 10%). Long-term antiplatelet therapy (DAPT) is required, increasing the risk of bleeding (such as gastrointestinal bleeding). It is not recommended for patients with isolated myocardial bridges. 5. Drug-eluting balloon: It cannot relieve the physical pressure of myocardial bridge, and its efficacy on simple myocardial bridge is unclear. Summary of the Invention
[0005] In order to overcome the shortcomings of the existing technology, the present invention provides a pulsed electric field ablation system for removing the vascular compression caused by the coronary artery myocardial bridge. The pulsed electric field ablation system can be used to remove the myocardial bundle covering the coronary artery, reduce or completely eliminate the mechanical compression on the coronary artery caused by the myocardial bridge, and avoid the occurrence of vascular complications such as coronary artery occlusion and rupture, ultimately solving the hemodynamic abnormalities caused by the existence of the myocardial bridge.
[0006] To achieve the above-mentioned purpose, a pulsed electric field ablation system for removing the compression of coronary myocardial bridge on blood vessels is designed, which includes an operating handle, a catheter, and a balloon, and is characterized in that: one end of the operating handle is connected to one end of the catheter, and the other end of the catheter is connected to and passes through the balloon; the balloon includes a main balloon cavity, a sub-balloon cavity, an electrode sheet, and an electrode wire, the front and back sides of the main balloon cavity are respectively connected to the front sub-balloon cavity and the rear sub-balloon cavity, the outside of the main balloon cavity is covered with a front electrode sheet and a rear electrode sheet, the bottoms of the front electrode sheet and the rear electrode sheet are respectively connected to the front electrode wire and the rear electrode wire, and the front electrode wire and the rear electrode wire are respectively located inside the front sub-balloon cavity and the rear sub-balloon cavity.
[0007] The other end of the operating handle is connected to the Luer interface, and the operating handle is connected to the balloon expansion pressure pump through the Luer interface; a PFA jack for plugging in the PFA energy source is provided on one side of the operating handle.
[0008] The bottoms of the front electrode sheet and the rear electrode sheet are respectively connected to one end of the front electrode wire and the rear electrode wire, and the other ends of the front electrode wire and the rear electrode wire are respectively inserted into the catheter and extended to the PFA jack of the operating handle.
[0009] The front electrode sheet and the rear electrode sheet have the same structure. The front electrode sheet (3-2) and the rear electrode sheet (3-3) are single-sided flexible electrodes. The width of the front electrode sheet and the rear electrode sheet is 1.4 mm, and the length of the front electrode sheet and the rear electrode sheet is 1.5 mm. The distance between the front electrode sheet and the rear electrode sheet is 5~8 mm.
[0010] Electrode orientation marks are attached to the catheters on the front and rear sides of the balloon to assist in determining the electrode orientation before the balloon is inflated. The orientation positions of the electrode orientation marks on both sides correspond to the orientation positions of the front and rear electrode sheets and are visualized under X-rays.
[0011] A plurality of liquid injection ports are arranged on the catheter located inside the main balloon cavity. The plurality of liquid injection ports are communicated with the liquid injection tube and are connected to the Luer interface of the operating handle through the liquid injection tube.
[0012] An OTW guidewire lumen is provided inside the catheter, through which the OTW guidewire passes. The front end of the OTW guidewire is led out from the outlet of the catheter inside the main balloon cavity, and the rear end of the OTW guidewire is led out from the quick exchange port on the catheter between the balloon and the operating handle.
[0013] A method for using a pulsed electric field ablation system to remove coronary myocardial bridge compression on blood vessels comprises the following steps: (1) Under general anesthesia, percutaneous coronary angiography is used to determine the location of the myocardial bridge and understand its diastolic and systolic stenosis and compression; (2) Injecting drugs into the patient’s system or coronary artery to reduce vasospasm; (3) Replace the working sheath to the target vessel and guide the guide wire into the distal end of the vessel; (4) Using the OTW guidewire, the balloon is introduced to the myocardial bridge site and ablated gradually from distal to proximal or proximal to distal according to the coverage of the myocardial bridge; (5) Angiography is used to determine whether the balloon is in the appropriate position, that is, the electrode orientation marks on both sides of the balloon indicate that the front and rear electrodes are facing away from the ventricle, and the distance between the two electrodes covers the area to be ablated; (6) According to the local blood vessel diameter, the balloon expansion pressure pump selects an appropriate pressure, i.e., 6-8 atm, and uses a mixture of contrast agent and saline to inflate the balloon; the appropriate ablation energy, i.e., 1000-2000 V / cm, is selected for ablation; (7) Under angiography, confirm again whether the front and back electrodes are in contact with the vascular wall; whether the direction of the front and back electrodes is facing away from the ventricle; and whether the range between the front and back electrodes covers the area to be ablated. Perform pulsed electric field ablation during the absolute refractory period of the ventricle under ECG gating. (8) After ablation is completed, the fluid in the balloon is withdrawn and the condition of the blood vessels and the patient is assessed; (9) If the ablation range is not sufficient, adjust the balloon to the unablated area and repeat steps (5) to (8) until the myocardial bridge coverage area is completely ablated; (10) Angiography is used to determine the condition of blood vessels after ablation, the condition of myocardial bridge compression, and the patient's vital signs, and the observation time is waited to ensure safety; (11) After the operation is completed, the OTW guidewire and sheath are removed, the skin wound is treated, the operation is ended, and after the patient wakes up from anesthesia, ECG and blood pressure monitoring are given.
[0014] In the step (7), pacing and / or impedance testing can also be used to assist in determining the direction of contact between the front and rear electrodes.
[0015] Compared with the existing technology, the present invention provides a pulsed electric field ablation system for removing the vascular compression caused by the coronary artery myocardial bridge. The pulsed electric field ablation system can be used to remove the myocardial bundle covering the coronary artery, reduce or completely eliminate the mechanical compression on the coronary artery caused by the myocardial bridge, and avoid the occurrence of vascular complications such as coronary artery occlusion and rupture, ultimately solving the hemodynamic abnormalities caused by the existence of the myocardial bridge. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural stereogram of the present invention.
[0017] Figure 2 It is the main view of the structure of the present invention.
[0018] Figure 3 It is a cross-sectional view of the balloon structure in the present invention.
[0019] Figure 4 Schematic diagram of the balloon structure of the present invention.
[0020] Figure 5 Schematic diagram of the liquid injection port inside the balloon in the present invention.
[0021] Figure 6 Schematic diagram of the interior of the catheter in the present invention.
[0022] See also Figures 1 to 4 , 1 is the operating handle, 1-1 is the Luer interface, 1-2 is the PFA jack, 2 is the catheter, 3 is the balloon, 3-1 is the main balloon cavity, 3-2 is the front electrode sheet, 3-3 is the rear electrode sheet, 3-4 is the front electrode wire, 3-5 is the rear electrode wire, 3-6 is the injection tube, 3-7 is the front auxiliary balloon cavity, 3-8 is the rear auxiliary balloon cavity, 3-9 is the injection port, 4 is the electrode direction mark, 5 is the OTW guidewire lumen, and 6 is the OTW guidewire. DETAILED DESCRIPTION
[0023] The present invention will be further described below with reference to the accompanying drawings.
[0024] Pulsed electric field ablation is a myocardial ablation method that has emerged in recent years. It is characterized by myocardial selectivity, rapid and safe ablation, and clear ablation effect. It requires close proximity to the ablation site to ensure the ablation effect.
[0025] After angiography confirms the length, thickness and size of the blood vessels at the myocardial bridge site, an extremely fine catheter equipped with dual electrodes capable of emitting pulsed electric fields is sent into the coronary artery where the myocardial bridge is located, using the left / right coronary guide sheath (6Fr) and guide wire (i.e., guide wire with a diameter of 0.014mm) commonly used in coronary intervention, to the site of the myocardial bridge.
[0026] like Figures 1 to 4As shown, a pulsed electric field ablation system for removing coronary myocardial bridge compression on blood vessels includes an operating handle, a catheter, and a balloon. One end of the operating handle 1 is connected to one end of the catheter 2, and the other end of the catheter 2 is connected to and passes through the balloon 3; the balloon 3 includes a main balloon cavity, a sub-balloon cavity, an electrode sheet, and an electrode wire. The front and rear sides of the main balloon cavity 3-1 are respectively connected to the front sub-balloon cavity 3-7 and the rear sub-balloon cavity 3-8. The outside of the main balloon cavity 3-1 is covered with a front electrode sheet 3-2 and a rear electrode sheet 3-3. The bottoms of the front electrode sheet 3-2 and the rear electrode sheet 3-3 are respectively connected to the front electrode wire 3-4 and the rear electrode wire 3-5. The front electrode wire 3-4 and the rear electrode wire 3-5 are respectively located inside the front sub-balloon cavity 3-7 and the rear sub-balloon cavity 3-8.
[0027] The other end of the operating handle 1 is connected to the Luer interface 1-1, and the operating handle 1 is connected to the balloon expansion pressure pump through the Luer interface 1-1; a PFA jack 1-2 for plugging in a PFA energy source is provided on one side of the operating handle 1.
[0028] The bottoms of the front electrode sheet 3-2 and the rear electrode sheet 3-3 are respectively connected to one end of the front electrode wire 3-4 and the rear electrode wire 3-5, and the other ends of the front electrode wire 3-4 and the rear electrode wire 3-5 are respectively inserted into the catheter 2 and extended to the PFA jack 1-2 of the operating handle 1.
[0029] The front electrode sheet 3-2 and the rear electrode sheet 3-3 have the same structure. The front electrode sheet (3-2) and the rear electrode sheet (3-3) are single-sided flexible electrodes. The width of the front electrode sheet 3-2 and the rear electrode sheet 3-3 is 1.4 mm, and the length of the front electrode sheet 3-2 and the rear electrode sheet 3-3 is 1.5 mm; the distance between the front electrode sheet 3-2 and the rear electrode sheet 3-3 is 5~8 mm.
[0030] The catheter 2 located on the front and rear sides of the balloon 3 is respectively covered with electrode orientation marks 4 to assist in determining the electrode orientation before the balloon 3 is inflated. The orientation positions of the electrode orientation marks 4 on both sides correspond to the orientation positions of the front electrode sheet 3-2 and the rear electrode sheet 3-3, and are visualized under X-rays.
[0031] The catheter 2 located inside the main balloon cavity 3-1 is provided with a plurality of injection ports 3-9, which are communicated with the injection tube 3-6 and connected to the Luer interface 1-1 of the operating handle 1 through the injection tube 3-6.
[0032] An OTW guidewire lumen 5 is provided inside the catheter 2, and an OTW guidewire 6 passes through the OTW guidewire lumen 5. The front end of the OTW guidewire 6 is led out from the outlet of the catheter 2 inside the main balloon cavity 3-1, and the rear end of the OTW guidewire 6 is led out from the quick exchange port on the catheter 2 between the balloon 3 and the operating handle 1.
[0033] The operating handle 1 is integrated with a standard Luer interface 1-1 for connecting a balloon expansion pressure pump, and a PFA socket 1-2 for connecting a PFA energy source. The catheter 2 is used to connect the operating handle 1 and the distal balloon 3 as one. The catheter 2 is a multi-lumen tube structure consisting of 4 lumens with a diameter of 1 mm. Among them, the OTW guidewire lumen 5 can pass through the OTW guidewire 6, from the guidewire quick exchange port to the distal end of the catheter 2. The front electrode sheet 3-2 and the rear electrode sheet 3-3 form an ablation electrode pair. The front electrode wire 3-4 supplies power to the front electrode 3-2, and the rear electrode wire 3-5 supplies power to the rear electrode 3-3. The proximal ends of these two electrode wires are connected to the PFA socket 1-2 on the operating handle 1.
[0034] There are specially set electrode orientation marks 4 at both ends of the balloon 3, which are consistent with the direction of the ablation electrode pair. This electrode orientation mark 4 is developed under X-ray and is on the same side as the front electrode piece 3-2 and the rear electrode piece 3-3. Based on this, it can be judged whether the front electrode piece 3-2 and the rear electrode piece 3-3 are facing the myocardial bridge before the balloon 3 is inflated.
[0035] Balloon 3 is an inflatable balloon with a maximum diameter of 2.5~3.0mm. The inflated diameter can be adjusted according to the pressure to ensure that after inflation, the electrode is close to the blood vessel wall and the covered myocardial bundle, with the direction facing away from the ventricular muscle / wall. It can be adjusted on the image before inflation to ensure stable position and adhesion.
[0036] The electrode sheet features a single-sided, flexible, dual-electrode design, one positive and one negative. This concentrates the electric field on the myocardial bridge outside the vessel wall, reducing electrical stimulation to the heart. This also reduces the difficulty of catheter manufacturing, keeping the catheter sufficiently thin and flexible, and minimizing irritation and damage to the coronary arteries.
[0037] After the discharge is completed, the balloon 3 can be folded up and the position of the electrode can be adjusted according to the previous angiography results, and the above operation can be repeated until the ablation of the entire myocardial bridge is completed.
[0038] When the present invention is working, under the guidance of X-ray, the balloon 3 and the catheter 2 are inserted into the arterial blood vessel along the OTW guidewire 6 through the guidewire rapid exchange hole, and the balloon 3 is gradually and slowly pushed to the lower part of the myocardial bridge. The orientation of the electrode pair is determined by the ablation electrode pair and the electrode orientation mark 4, and the myocardial bridge to be ablated is covered. After the positioning of the balloon 3 is completed, the appropriate pressure can be selected to expand the balloon 3 so that the electrode pair can be reliably and tightly attached to the blood vessel wall where the myocardial bridge is located. At this time, through imaging, pacing and / or impedance testing methods can also be used to assist in judging whether the electrode pair is accurately facing the myocardial bridge, and then, during the absolute refractory period of the ventricle under ECG gating, the PFA energy is started for ablation treatment.
[0039] A method for using a pulsed electric field ablation system to remove coronary artery myocardial bridge compression on blood vessels, the specific operation is as follows: (1) Under general anesthesia, percutaneous coronary angiography is used to determine the location of the myocardial bridge and understand its diastolic and systolic stenosis and compression; (2) Injecting drugs into the patient’s system or coronary artery to reduce vasospasm; (3) Replace the working sheath to the target vessel and guide the guide wire into the distal end of the vessel; (4) Using the OTW guidewire, the balloon is introduced to the myocardial bridge site and ablated gradually from distal to proximal or proximal to distal according to the coverage of the myocardial bridge; (5) Angiography is used to determine whether the balloon is in the appropriate position, that is, the electrode orientation marks on both sides of the balloon indicate that the front and rear electrodes are facing away from the ventricle, and the distance between the two electrodes covers the area to be ablated; (6) According to the local blood vessel diameter, the balloon expansion pressure pump selects an appropriate pressure, i.e., 6-8 atm, and uses a mixture of contrast agent and saline to inflate the balloon; the appropriate ablation energy, i.e., 1000-2000 V / cm, is selected for ablation; (7) Under angiography, reconfirm whether the front and rear electrodes are in contact with the vascular wall; whether the direction of the front and rear electrodes is facing away from the ventricle; pacing and / or impedance testing can also be used to assist in determining the contact direction; and whether the range between the front and rear electrodes covers the area to be ablated. Pulsed electric field ablation is performed during the absolute refractory period of the ventricle under ECG gating; (8) After ablation is completed, the fluid in the balloon is withdrawn and the condition of the blood vessels and the patient is assessed; (9) If the ablation range is not sufficient, adjust the balloon to the unablated area and repeat steps (5) to (8) until the myocardial bridge coverage area is completely ablated; (10) Angiography is used to determine the condition of blood vessels after ablation, the condition of myocardial bridge compression, and the patient's vital signs, and the observation time is waited to ensure safety; (11) After the operation is completed, the OTW guidewire and sheath are removed, the skin wound is treated, the operation is ended, and after the patient wakes up from anesthesia, ECG and blood pressure monitoring are given.
Claims
1. A pulsed electric field ablation system for removing coronary myocardial bridge compression, comprising an operating handle, a catheter, and a balloon, characterized by: One end of the operating handle (1) is connected to one end of the catheter (2), and the other end of the catheter (2) is connected to and passes through the balloon (3); the balloon (3) includes a main balloon cavity, a sub-balloon cavity, an electrode sheet, and an electrode wire. The front and rear sides of the main balloon cavity (3-1) are respectively connected to the front sub-balloon cavity (3-7) and the rear sub-balloon cavity (3-8). The front electrode sheet (3-2) and the rear electrode sheet (3-3) are attached to the outside of the main balloon cavity (3-1). The bottoms of the front electrode sheet (3-2) and the rear electrode sheet (3-3) are respectively connected to the front electrode wire (3-4) and the rear electrode wire (3-5). The front electrode wire (3-4) and the rear electrode wire (3-5) are respectively located inside the front sub-balloon cavity (3-7) and the rear sub-balloon cavity (3-8).
2. A pulsed electric field ablation system for removing coronary myocardial bridge compression on blood vessels according to claim 1, characterized in that: The other end of the operating handle (1) is connected to the Luer interface (1-1), and the operating handle (1) is connected to the balloon expansion pressure pump via the Luer interface (1-1); a PFA socket (1-2) for connecting to a PFA energy source is provided on one side of the operating handle (1).
3. A pulsed electric field ablation system for removing coronary myocardial bridge compression on blood vessels according to claim 1 or 2, characterized in that: The bottoms of the front electrode sheet (3-2) and the rear electrode sheet (3-3) are respectively connected to one end of the front electrode wire (3-4) and the rear electrode wire (3-5), and the other ends of the front electrode wire (3-4) and the rear electrode wire (3-5) are respectively inserted into the catheter (2) and extended to the PFA jack (1-2) of the operating handle (1).
4. A pulsed electric field ablation system for removing coronary myocardial bridge compression on blood vessels according to claim 1 or 2, characterized in that: The front electrode sheet (3-2) and the rear electrode sheet (3-3) have the same structure. The front electrode sheet (3-2) and the rear electrode sheet (3-3) are single-sided flexible electrodes. The width of the front electrode sheet (3-2) and the rear electrode sheet (3-3) is 1.4 mm, and the length of the front electrode sheet (3-2) and the rear electrode sheet (3-3) is 1.5 mm. The distance between the front electrode sheet (3-2) and the rear electrode sheet (3-3) is 5~8 mm.
5. The pulsed electric field ablation system for removing coronary myocardial bridge compression on blood vessels according to claim 1, characterized in that: Electrode orientation marks (4) are respectively attached to the catheters (2) located on the front and rear sides of the balloon (3) to assist in determining the orientation of the electrodes before the balloon (3) is inflated. The orientation positions of the electrode orientation marks (4) on both sides correspond to the orientation positions of the front electrode sheet (3-2) and the rear electrode sheet (3-3), and are developed under X-ray.
6. The pulsed electric field ablation system for removing coronary myocardial bridge compression on blood vessels according to claim 1, characterized in that: A plurality of liquid injection ports (3-9) are provided on the catheter (2) located inside the main balloon cavity (3-1); the plurality of liquid injection ports (3-9) are communicated with the liquid injection tube (3-6) and connected to the Luer interface (1-1) of the operating handle (1) through the liquid injection tube (3-6).
7. The pulsed electric field ablation system for removing coronary myocardial bridge compression on blood vessels according to claim 1, characterized in that: An OTW guidewire lumen (5) is provided inside the catheter (2), an OTW guidewire (6) passes through the OTW guidewire lumen (5), the front end of the OTW guidewire (6) is led out from the outlet of the catheter (2) inside the main balloon cavity (3-1), and the rear end of the OTW guidewire (6) is led out from the quick exchange port on the catheter (2) between the balloon (3) and the operating handle (1).
8. A method for using a pulsed electric field ablation system to remove coronary myocardial bridge compression on blood vessels, characterized in that: The following steps are involved: (1) Under general anesthesia, percutaneous coronary angiography is used to determine the location of the myocardial bridge and understand its diastolic and systolic stenosis and compression; (2) Injecting drugs into the patient’s system or coronary artery to reduce vasospasm; (3) Replace the working sheath to the target vessel and guide the guide wire into the distal end of the vessel; (4) Using the OTW guidewire, the balloon is introduced to the myocardial bridge site and ablated gradually from distal to proximal or proximal to distal according to the coverage of the myocardial bridge; (5) Angiography is used to determine whether the balloon is in the appropriate position, that is, the electrode orientation marks on both sides of the balloon indicate that the front and rear electrodes are facing away from the ventricle, and the distance between the two electrodes covers the area to be ablated; (6) According to the local blood vessel diameter, the balloon expansion pressure pump selects an appropriate pressure, i.e., 6-8 atm, and uses a mixture of contrast agent and saline to inflate the balloon; the appropriate ablation energy, i.e., 1000-2000 V / cm, is selected for ablation; (7) Under angiography, confirm again whether the front and back electrodes are in contact with the vascular wall; whether the direction of the front and back electrodes is facing away from the ventricle; and whether the range between the front and back electrodes covers the area to be ablated. Perform pulsed electric field ablation during the absolute refractory period of the ventricle under ECG gating. (8) After ablation is completed, the fluid in the balloon is withdrawn and the condition of the blood vessels and the patient is assessed; (9) If the ablation range is not sufficient, adjust the balloon to the unablated area and repeat steps (5) to (8) until the myocardial bridge coverage area is completely ablated; (10) Angiography is used to determine the condition of blood vessels after ablation, the condition of myocardial bridge compression, and the patient's vital signs, and the observation time is waited to ensure safety; (11) After the operation is completed, the OTW guidewire and sheath are removed, the skin wound is treated, the operation is ended, and after the patient wakes up from anesthesia, ECG and blood pressure monitoring are given.
9. The method for using the pulsed electric field ablation system for removing coronary myocardial bridge compression on blood vessels according to claim 8, characterized in that: In the step (7), pacing and / or impedance testing can also be used to assist in determining the direction of contact between the front and rear electrodes.