An epicardial ablation system

Abstract

The present invention discloses an epicardial ablation system, comprising an ablation catheter and an ablation electrode catheter, wherein the ablation catheter comprises a balloon, an adjustable bending structure, an endoscope, a guidewire channel, an ablation electrode channel and a guidewire, the endoscope being connected to an electrode controller, one end of the ablation catheter being connected to a handle, a knob and a push knob being respectively provided in the middle of one end of the handle, the knob being connected to the adjustable bending structure via a traction line, a positioning assembly being provided between the knob and the push knob on the handle, one end of the knob being sleeved on the outside of the handle and being sleeved with a positioning ring, the positioning assembly being cooperatively connected to the positioning ring. Beneficial effects: the front end is kept in the current bending state, and the locking state can be released in time by reversing the positioning assembly, and the ablation catheter handle structure can be operated by a medical practitioner with one hand while controlling the accuracy and stroke.

Description

Technical Field

[0001] The present invention relates to the technical field of medical mapping catheters, and in particular to an epicardial ablation system. Background Art

[0002] Atrial fibrillation is one of the most common clinically diagnosed tachyarrhythmias. Epidemiological data show that the overall prevalence of atrial fibrillation in my country is approximately 0.7%, with both incidence and prevalence increasing with age. Atrial fibrillation can lead to stroke and worsening heart function, and is a major cause of mortality and disability for patients, significantly reducing quality of life and increasing the burden on society. Therefore, treatment for atrial fibrillation is crucial. Due to the complex anatomy of the human body, precise catheter access to different lesion sites and adaptability to lesions of varying structures are extremely challenging, requiring catheter distal tips of varying shapes and handles with superior controllability.

[0003] During actual operation, bending and adjusting the diameter of the spiral part are achieved through two control keys on the control handle respectively. When making adjustments or issuing instructions, the ablation catheter handle structure can ensure appropriate bending force during clinical operation and enable the medical practitioner to operate with one hand while ensuring control accuracy and stroke. In addition, the ablation catheter handle structure should be combined with a positioning structure suitable for the medical practitioner to operate with one hand.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Summary of the Invention

[0005] In response to the problems in the related art, the present invention proposes an epicardial ablation system to overcome the above technical problems existing in the existing related art.

[0006] To this end, the specific technical solutions adopted in the present invention are as follows:

[0007] An epicardial ablation system includes an ablation catheter and an ablation electrode catheter, wherein the ablation catheter includes a balloon, an adjustable bending structure, an endoscope, a guidewire channel, an ablation electrode channel, and a guidewire. The adjustable bending structure is provided inside the ablation catheter, one end of the ablation catheter is provided with a balloon, the interior of the balloon is provided with an endoscope, the lower end of the ablation catheter is provided with an ablation electrode channel and a guidewire channel, the ablation electrode catheter is located in the ablation electrode channel, the guidewire rubs on the guidewire channel, the top end of the ablation electrode catheter is provided with an ablation electrode, and the interior of the ablation electrode channel is provided with an ablation electrode. An ablation electrode catheter is provided, and the ablation electrode includes a plurality of connecting ridges and connecting electrodes located at the front end of the ablation electrode catheter, and a plurality of connecting electrodes are provided on the connecting ridges. The endoscope is connected to the electrode controller, and one end of the ablation catheter is connected to the handle. A knob and a push knob are respectively provided in the middle of one end of the handle. The knob is connected to the adjustable bending structure through a traction line. A positioning assembly is provided on the handle between the knob and the push knob. One end of the knob is sleeved on the outside of the handle and is sleeved with a positioning ring, and the positioning assembly is matched with the positioning ring.

[0008] Furthermore, the handle is connected to the electrode controller via a plurality of connectors.

[0009] Furthermore, the endoscope is connected to the electrode controller via a connecting signal line inserted through the ablation catheter, and a display screen is provided on the electrode controller.

[0010] Furthermore, the connecting ridge is an elliptical structure, and the connecting ridge is connected to the ablation electrode catheter.

[0011] Furthermore, the connection ridges and the connection electrodes are arranged in one of the following arrangements on a plane: row, row, row, and row.

[0012] Furthermore, the positioning assembly includes a rotating ring located in the middle of the handle, the middle of the rotating ring is provided with a plurality of arcuate grooves, the convex ring end of the handle is provided with a plurality of limit rods inserted into the arcuate grooves, and the lower end of the limit rod is provided with a limit plate, a fixed ring is provided in the middle of the interior of the rotating ring, the handle is located inside the rotating ring and is threadedly connected to the fixing ring with a fastening screw barrel, a plurality of rotating connecting rods are provided between the fixing ring and the rotating ring, the inner wall of the fixing ring is provided with a threaded adjustment cylinder that matches the thread of the fastening screw barrel. The inner wall of the fastening screw barrel is provided with a limit rubber pad connected to the positioning ring.

[0013] Furthermore, the outer portion of the rotating ring is provided with an anti-skid connecting ring, and the outer portion of the anti-skid connecting ring is provided with a plurality of anti-skid inclined grooves.

[0014] The present invention provides an epicardial ablation system with the following beneficial effects: The present invention is used in the treatment of epicardial atrial fibrillation. The balloon enables separation and support of the pericardium from the heart, while endoscope observation facilitates identification of the area requiring ablation. Furthermore, the ablation electrode has a large area, enabling rapid and effective pulmonary vein isolation. The positioning assembly enhances the firmness of the positioning assembly and knob, providing a continuous lock in the non-rotating state while maintaining the tip's current curved state. The locking state can be promptly released by reversing the positioning assembly, enabling single-handed operation of the ablation catheter handle while controlling accuracy and travel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 is a schematic structural diagram of an epicardial ablation system according to an embodiment of the present invention;

[0017] Figure 2 2. It is a schematic diagram of the state of an ablation catheter of an epicardial ablation system according to an embodiment of the present invention;

[0018] Figure 3 is a schematic diagram of an ablation electrode of an epicardial ablation system according to an embodiment of the present invention;

[0019] Figure 4 is a schematic diagram of an ablation electrode catheter of an epicardial ablation system according to an embodiment of the present invention;

[0020] Figure 5 is a schematic diagram of knob connections of an epicardial ablation system according to an embodiment of the present invention;

[0021] Figure 6 2. It is a schematic diagram of a fastening screw barrel of an epicardial ablation system according to an embodiment of the present invention;

[0022] Figure 7 Schematic diagram of a positioning component of an epicardial ablation system according to an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Ablation catheter; 2. Ablation electrode catheter; 3. Balloon; 4. Adjustable bending structure; 5. Endoscope; 6. Ablation electrode channel; 7. Guide wire; 8. Ablation electrode; 9. Connecting ridge; 10. Connecting electrode; 11. Handle; 12. Knob; 13. Push-twist; 14. Positioning assembly; 15. Positioning ring; 16. Connector; 17. Rotating ring; 18. Arc groove; 19. Limit rod; 20. Fixing ring; 21. Fastening screw; 22. Rotating connecting rod; 23. Threaded adjustment cylinder; 24. Limiting rubber pad; 25. Anti-slip connecting ring; 26. Anti-slip inclined groove. DETAILED DESCRIPTION

[0025] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] According to an embodiment of the present invention, an epicardial ablation system is provided.

[0027] Example 1:

[0028] like Figure 1-7 As shown, the epicardial ablation system according to an embodiment of the present invention includes an ablation catheter 1 and an ablation electrode catheter 2, the ablation catheter 1 includes a balloon 3, an adjustable bending structure 4, an endoscope 5, a guidewire channel, an ablation electrode channel 6 and a guidewire 7, the interior of the ablation catheter 1 is provided with an adjustable bending structure 4, one end of the ablation catheter 1 is provided with a balloon 3, the interior of the balloon 3 is provided with an endoscope 5, the lower end of the ablation catheter 1 is provided with an ablation electrode channel 6 and a guidewire channel, the ablation electrode catheter 2 is located in the ablation electrode channel 6, the guidewire 7 rubs on the guidewire channel, the top of the ablation electrode catheter 2 is provided with an ablation electrode 8, the interior of the ablation electrode channel 6 is provided with an ablation electrode 8, and the interior of the ablation electrode channel 6 is provided with an ablation electrode 8. The ablation electrode catheter 2 comprises a plurality of connecting ridges 9 and connecting electrodes 10 provided at the front end of the ablation electrode catheter 2, a plurality of connecting electrodes 10 are provided on the connecting ridges 9, the endoscope 5 is connected to the electrode controller, one end of the ablation catheter 1 is connected to the handle 11, a knob 12 and a push knob 13 are provided in the middle of one end of the handle 11, the knob 12 is connected to the adjustable bending structure 4 through a traction line, the handle 11 is provided with a positioning assembly 14 between the knob 12 and the push knob 13, one end of the knob 12 is sleeved on the outside of the handle 11 and a positioning ring 15 is sleeved, and the positioning assembly 14 is matched with the positioning ring 15.

[0029] Example 2:

[0030] like Figure 1-7 As shown, the handle 11 is connected to the electrode controller via several connectors 16. The endoscope 5 is connected to the electrode controller via a connecting signal line inserted through the ablation catheter 1. The electrode controller is provided with a display screen. The connecting ridge 9 has an elliptical structure and is connected to the ablation electrode catheter 2. The connecting ridge 9 and the connecting electrodes 10 are arranged in one of two, three, four, or five rows on a plane.

[0031] like Figure 1-7 As shown, the positioning assembly 14 includes a rotating ring 17 located in the middle of the handle 11. The rotating ring 17 is provided with a plurality of arcuate grooves 18 in the middle. The convex ring end of the handle 11 is provided with a plurality of limit rods 19 that penetrate the arcuate grooves 18. The lower end of the limit rods 19 is provided with a limit plate. A fixed ring 20 is provided in the middle of the rotating ring 17. The handle 11 is located inside the rotating ring 17 and is threadedly connected to the fixed ring 20 with a fastening screw 21. Several rotating connecting rods 22 are provided between the fixed ring 20 and the rotating ring 17. The inner wall of the fixed ring 20 is provided with a threaded adjustment cylinder 23 that matches the threads of the fastening screw 21. The inner wall of the fastening screw 21 is provided with a limit rubber pad 24 connected to the positioning ring. The outer surface of the rotating ring 17 is provided with an anti-slip connecting ring 25, and the outer surface of the anti-slip connecting ring 25 is provided with a plurality of anti-slip inclined grooves 26.

[0032] In order to facilitate understanding of the above technical solution of the present invention, the process of the above solution of the present invention is described in detail below with reference to the accompanying drawings, as follows:

[0033] According to another aspect of the present invention, there is provided an epicardial ablation system;

[0034] The epicardial ablation system includes the following operating steps:

[0035] Step 1: Enter through a 1-inch incision below the xiphoid process, perform pericardiocentesis, and advance a guide wire 7 along the puncture site;

[0036] Step 2: Pass the guidewire 7 through the guidewire channel of the ablation catheter 1 and push the ablation catheter 1 into the pericardium along the guidewire 7;

[0037] Step 3: Inside the pericardium, expand the balloon 3 at the tip of the ablation catheter 1 to expand the space inside the pericardium. Use the endoscope 5 to observe the internal environment, locate the pulmonary veins, and confirm the ablation area.

[0038] Step 4: Retract the guide wire 7 and push the ablation electrode 8 out to the ablation area. At this time, the balloon 3 shrinks, the irreversible electroporation ablation device is turned on, the ablation parameters are set, and ablation is started;

[0039] Step 5: Move a certain distance left and right between the pulmonary veins and perform ablation again to ensure complete ablation;

[0040] Step 6: After the high-voltage pulse ablation is completed, the ablation electrode 8 is retracted into the ablation catheter 1, and then the catheter is withdrawn from the pericardium and the thoracic cavity in sequence, and the ablation is completed.

[0041] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in actual process is described in detail below.

[0042] In actual application, during surgery, the guidewire 7 is first placed into the pericardium and then inserted along the guidewire channel of the ablation catheter 1 to guide the ablation catheter 1 into the pericardium. After the ablation catheter 1 is immersed in the pericardium, the balloon 3 is inflated to separate the pericardium from the epicardium. The endoscope 5 is then used to observe the internal situation, locate the pulmonary veins, and determine the ablation area.

[0043] When observing the pericardium, the most suitable ablation area can be found by adjusting the lens of the endoscope 5 or the bending structure of the ablation catheter 1. The ablation electrode catheter 2 enters through the corresponding channel of the ablation catheter 1, and all its connecting electrodes 10 are arranged on the same plane, with a certain distance between the connecting electrodes 10. During ablation, the ablation electrode 8 is pushed out of the channel, and the entire connecting electrode 10 plane is between the pericardium and the epicardium;

[0044] Irreversible electroporation is a fast, safe, and efficient technique for delivering ablation energy to achieve durable pulmonary vein isolation without damaging adjacent tissues. After subxiphoid pericardiocentesis, the balloon 3 is designed to expand the area between the pericardium and epicardium. The visualization design of the endoscope 5 within the ablation catheter 1 improves the efficiency of finding the ablation area. The planar ablation electrode design makes the ablation effect more effective.

[0045] After being fixed, the anti-slip connecting ring 25 on the positioning component 14 is manually moved to drive the rotating ring 17 to rotate. During the rotation, the rotating ring 17 pushes the rotating connecting rod 22 to fasten the threaded adjustment tube 23 on the fixing ring 20 to the threaded outer wall of the fastening screw 21. The rotating connecting rod 22 moves the fixing ring 20, and the internal thread movement of the fixing ring 20 causes the threaded adjustment tube 23 to move, so that the threaded adjustment tube 23 tightens the fastening screw 21 and clamps the positioning ring 15 connected to the knob 12 under the limiting rubber pad 24, so that the firmness of the positioning component 14 and the knob 12 is increased, and a continuous locking is performed in the non-rotating state, so that the front end maintains the current bending state. By reversing the positioning component 14, the locking state can be released in time, and the ablation catheter handle structure that can be operated by the medical practitioner with one hand can be controlled under the condition of accuracy and stroke.

[0046] In summary, with the aid of the above technical solution of the present invention, the pericardium and the heart can be separated and supported by the balloon 3, and the endoscope 5 can facilitate observation and determine the area requiring ablation. In addition, the ablation electrode 8 has a large area, which allows for rapid and effective isolation of the pulmonary veins. The positioning assembly 14 increases the firmness of the positioning assembly 14 and the knob 12, and a continuous locking is performed in the non-rotating state, so that the front end maintains the current curved state. By reversing the positioning assembly 14, the locking state can be promptly released, and the ablation catheter handle structure can be operated by the medical practitioner with one hand while controlling the accuracy and stroke.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An epicardial ablation system, characterized in that: The invention comprises an ablation catheter (1) and an ablation electrode catheter (2), wherein the ablation catheter (1) comprises a balloon (3), an adjustable bending structure (4), an endoscope (5), a guidewire channel, an ablation electrode channel (6) and a guidewire (7), wherein the adjustable bending structure (4) is provided inside the ablation catheter (1), a balloon (3) is provided at one end of the ablation catheter (1), an endoscope (5) is provided inside the balloon (3), an ablation electrode channel (6) and a guidewire channel are provided at the lower end of the ablation catheter (1), the ablation electrode catheter (2) is located inside the ablation electrode channel (6), the guidewire (7) rubs against the guidewire channel, and the ablation electrode catheter (2) is provided with a guidewire. ) is provided with an ablation electrode (8) at the top end, an ablation electrode catheter (2) is provided inside the ablation electrode channel (6), the ablation electrode (8) includes a plurality of connection ridges (9) and connection electrodes (10) provided at the front end of the ablation electrode catheter (2), a plurality of connection electrodes (10) are provided on the connection ridges (9), the endoscope (5) is connected to the electrode controller, one end of the ablation catheter (1) is connected to the handle (11), a knob (12) and a push knob (13) are provided in the middle of one end of the handle (11), the knob (12) is connected to the adjustable bending structure (4) through a traction line, and the handle (11) is located at the A positioning assembly (14) is provided between the knob (12) and the push knob (13), one end of the knob (12) is sleeved on the outside of the handle (11) and is sleeved with a positioning ring (15), the positioning assembly (14) is matched with the positioning ring (15), the positioning assembly (14) comprises a rotating ring (17) located in the middle of the handle (11), the middle of the rotating ring (17) is provided with a plurality of arc grooves (18), the convex ring end of the handle (11) is provided with a plurality of limiting rods (19) inserted into the arc grooves (18), the lower end of the limiting rod (19) is provided with a limiting plate, the inner middle of the rotating ring (17) is provided with a plurality of limiting rods (19) inserted into the arc grooves (18), and the lower end of the limiting rod (19) is provided with a limiting plate. A fixing ring (20) is provided, the handle (11) is located inside the rotating ring (17) and is connected to the fixing ring (20) by a fastening screw barrel (21) threadedly, a plurality of rotating connecting rods (22) are provided between the fixing ring (20) and the rotating ring (17), a threaded adjustment barrel (23) matched with the thread of the fastening screw barrel (21) is provided on the inner wall of the fixing ring (20), a limiting rubber pad (24) connected to the positioning ring is provided on the inner wall of the fastening screw barrel (21), an anti-slip connecting ring (25) is provided on the outside of the rotating ring (17), and a plurality of anti-slip inclined grooves (26) are provided on the outside of the anti-slip connecting ring (25).

2. The epicardial ablation system according to claim 1, characterized in that: The handle (11) is connected to the electrode controller via a plurality of connectors (16).

3. The epicardial ablation system according to claim 1, characterized in that: The endoscope (5) is connected to the electrode controller via a connection signal line inserted through the ablation catheter (1); a display screen is provided on the electrode controller.

4. The epicardial ablation system according to claim 1, characterized in that: The connecting ridge (9) has an elliptical structure, and the connecting ridge (9) is connected to the ablation electrode catheter (2).

5. The epicardial ablation system according to claim 1, characterized in that: The connection ridges (9) and the connection electrodes (10) are arranged in one of 2 columns, 3 columns, 4 columns and 5 columns on a plane.

Images