Renal artery sympathetic nerve ablation device

Abstract

The utility model relates to a renal artery sympathetic nerve ablation device, which belongs to the technical field of medical instruments and comprises a host and an ablation catheter structure, the host is communicated with the ablation catheter structure through a connecting line, the ablation catheter structure comprises a control handle, a PCB (printed circuit board) and a 6% Luer taper are arranged in the control handle, and the PCB is connected with the ablation catheter structure. The PCB is provided with a plurality of contact switches, the PCB is communicated with the host through the connecting wire, the 6% Luer taper is connected with the PI pipe, the PI pipe is arranged in the outer layer main body pipe, and a plurality of working guide pipes are further arranged in the outer layer main body pipe. The ablation device comprises a plurality of working catheters, and each working catheter can perform local ablation, so that the ablation efficiency can be improved; by adjusting the stay wire control mechanism on the handle, the bending degree of the working catheter can be controlled so as to adapt to different individuals and different sections of renal artery inner diameters, it can be guaranteed that the working catheter is well attached to a blood vessel, and the adaptability of the ablation catheter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a renal artery sympathetic nerve ablation device. Background Art

[0002] Hypertension is a common chronic disease and one of the independent risk factors for cardiovascular diseases.

[0003] The pathogenesis of hypertension involves a variety of pathophysiological factors, including the inappropriate activation of the renin-angiotensin-aldosterone system (RAAS), the enhanced activation of the sympathetic nervous system (SNS), and the abnormal handling of sodium by the kidneys. The excessive activation of the renal sympathetic nervous system is one of the most important pathophysiological factors of hypertension. Blocking the renal sympathetic nerve can regulate the overly activated sympathetic nerve signals between the kidney and the central nervous system, reduce the renal and systemic sympathetic nerve activities, and thus play a role in controlling the occurrence and development of hypertension.

[0004] At present, there are mainly two types of catheters used clinically for ablating renal artery sympathetic nerves: traditional large-tip ablation catheters and single-ring multi-polar catheters. However, due to individual differences among patients, both of these catheters have the defects of small coverage range and low ablation efficiency.

[0005] Therefore, a renal artery sympathetic nerve ablation device that can improve the ablation efficiency, reduce the operation time, and adapt to different patients is needed. Summary of the Utility Model

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a renal artery sympathetic nerve ablation device that can improve the ablation efficiency, reduce the operation time, and adapt to different patients.

[0007] To achieve the above-mentioned utility model purpose, the utility model provides a renal artery sympathetic nerve ablation device, which includes a host and an ablation catheter structure. The host is connected to the ablation catheter structure through a connecting wire. The ablation catheter structure includes a control handle. A PCB board and a 6% Luer connector are provided in the control handle. A plurality of contact switches are provided on the PCB board. The PCB board is connected to the host through the connecting wire. The 6% Luer connector is connected to a PI tube. The PI tube is arranged in an outer main body tube, and a plurality of working catheters are also arranged in the outer main body tube.

[0008] Further, the working catheter includes a working catheter main body. A platinum-iridium ring is provided at the end of the working catheter main body. A spring is arranged inside the working catheter main body. A pull wire is arranged between the spring and the inner side wall of the working catheter main body. One end of the pull wire is connected to the platinum-iridium ring, and the other end of the pull wire is connected to a pull wire control mechanism. The pull wire control mechanism is arranged in the control handle.

[0009] Further, the pulling wire is arranged on the inner side wall of the working catheter main body away from the PI tube.

[0010] Further, a pulling wire harness formed by a plurality of pulling wires is arranged in the outer main body tube.

[0011] Further, the control handle includes an upper shell and a lower shell formed by injection molding, and the upper shell is snap-connected to the lower shell.

[0012] Further, the ablation device further includes a main machine power cord connected to the main machine.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The ablation device includes a plurality of working catheters, and each working catheter can perform local ablation, which can improve the ablation efficiency;

[0015] By adjusting the pulling wire control mechanism on the handle, the bending degree of the working catheter can be controlled to adapt to the inner diameters of renal arteries of different individuals and different segments, which can ensure good contact between the working catheter and the blood vessel and improve the adaptability of the ablation catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic three-dimensional structure diagram of an embodiment of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the ablation catheter structure of an embodiment of the present utility model;

[0018] Figure 3 is Figure 2 an enlarged cross-sectional structural diagram of A in

[0019] Figure 4 is Figure 2 an enlarged cross-sectional structural diagram of B in

[0020] Figure 5 is Figure 2 an enlarged cross-sectional structural diagram of C in

[0021] Figure 6 is a schematic three-dimensional enlarged structure diagram of the working catheter;

[0022] Figure 7 is an enlarged cross-sectional structural diagram of the working catheter. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the utility model. The embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0024] As Figure 1-7 shown, the renal artery sympathetic nerve ablation device includes a main unit 2 and an ablation catheter structure. The main unit 2 is used to adjust the ablation temperature and time. The main unit 2 is connected to the ablation catheter structure through a connecting wire 3. The ablation catheter structure includes a control handle 4. A PCB board 7 and a 6% Luer connector 5 are provided in the control handle 4. The electronic components are connected together through a customized PCB board 7 to form a complete circuit, enabling the circuit to work properly. The 6% Luer connector 5 meets the requirements of GB / T1962.1 and GB / T1962.1 and can be connected to external instruments. A number of contact switches 8 are provided on the PCB board 7. The contact switches 8 control the on / off of the circuit. The PCB board 7 is connected to the main unit 2 through the connecting wire 3. The 6% Luer connector 5 is connected to a PI tube 6. The PI tube 6 is adhesively bonded to the 6% Luer connector 5. The PI tube 6 is arranged in an outer main body tube 10. A number of working catheters 12 are also provided in the outer main body tube 10. A wire harness 9 is further provided on the outer main body tube 10. The wire harness 9 includes a power line connecting a platinum-iridium ring 13 and a "thermocouple" wire harness 9 arranged near the platinum-iridium ring 13, both of which are connected to the PCB board 7. The on / off of the power supply at the distal end is realized through the contact switch 8;

[0025] The working catheter 12 includes a working catheter main body. A platinum-iridium ring 13 is provided at the end of the working catheter main body. The platinum-iridium ring 13 is a platinum-iridium alloy and has a certain resistance, capable of generating resistive heat. A spring 15 is provided inside the working catheter main body. By controlling the deformation of the spring 15, the treatment range of the ablation catheter structure is controlled. A pull wire 14 is provided between the spring 15 and the inner side wall of the working catheter main body. One end of the pull wire 14 is connected to the platinum-iridium ring 13, and the other end of the pull wire 14 is connected to a pull wire control mechanism. The pull wire control mechanism is used to control the pull wire 14 and pull the pull wire 14 to control the treatment range of the ablation catheter structure. The pull wire control mechanism is arranged in the control handle 4;

[0026] The pull wire 14 is arranged on the side of the inner side wall of the working catheter main body away from the PI tube 6, facilitating the bending of the working catheter main body;

[0027] A pull wire harness 11 formed by a number of pull wires 14 is provided in the outer main body tube 10;

[0028] The control handle 4 includes an upper shell and a lower shell formed by injection molding. The upper shell is snap-connected to the lower shell, facilitating installation and disassembly during maintenance;

[0029] The ablation device further includes a main unit power cord 1 connected to the main unit 2 for supplying power to the main unit 2, and the main unit power cord 1 is connected to 220V electricity;

[0030] The operation steps of the ablation device are as follows:

[0031] Perform percutaneous puncture technique with a catheter sheath and insert the catheter sheath;

[0032] Under the guidance of X-ray, guide the working catheter 12 of the ablation device to the position of the renal artery sympathetic nerve;

[0033] Set the ablation temperature and time on the main unit 2;

[0034] Adjust the control mechanism on the control handle 4, pull the wire 14 to bend the working catheter 12, and make it close to the inner wall of the renal artery. Different patients adjust the bending degree of the working catheter 12 differently;

[0035] Press the switch on the control handle 4, and radiofrequency ablation of the renal artery sympathetic nerve begins;

[0036] After the operation is completed, withdraw the instruments in sequence and perform routine nursing for the interventional operation;

[0037] The ablation device includes multiple working catheters 12, and each working catheter 12 can perform local ablation, which can improve the ablation efficiency;

[0038] By adjusting the control mechanism of the wire 14 on the handle, the bending degree of the working catheter 12 can be controlled to adapt to the inner diameters of different individuals and different segments of the renal artery, and it can ensure good contact between the working catheter 12 and the blood vessel, improving the adaptability of the ablation catheter.

[0039] The technical solution of the present utility model has been described above in combination with specific embodiments. However, it should be noted that the above descriptions are only for explaining the solution of the present utility model and cannot be construed as any specific limitation on the protection scope of the utility model. Based on the above explanations, those skilled in the art can think of other specific embodiments or equivalent replacements of the present utility model without creative efforts, and all will fall within the protection scope of the present utility model.

Claims

1. A renal artery sympathetic nerve ablation device, characterized in that: It includes a host and an ablation catheter structure, the host is connected to the ablation catheter structure through a connecting line, the ablation catheter structure includes a control handle, the control handle is provided with a PCB board and a 6% Luer connector, the PCB board is provided with a plurality of contact switches, the PCB board is connected to the host through the connecting line, the 6% Luer connector is connected to a PI tube, the PI tube is arranged in an outer main body tube, and the outer main body tube is also provided with a plurality of working catheters.

2. The renal artery sympathetic nerve ablation device according to claim 1, characterized in that: The working catheter includes a working catheter body, a platinum-iridium ring is provided at the end of the working catheter body, a spring is provided inside the working catheter body, a pull wire is provided between the spring and the inner wall of the working catheter body, one end of the pull wire is connected to the platinum-iridium ring, and the other end of the pull wire is connected to a pull wire control mechanism, and the pull wire control mechanism is arranged in the control handle.

3. The renal artery sympathetic nerve ablation device according to claim 2, characterized in that: The pull wire is arranged on a side of the inner side wall of the working catheter body away from the PI tube.

4. The renal artery sympathetic nerve ablation device according to claim 1, characterized in that: The outer main body tube is provided with a drawing wire harness formed by a plurality of drawing wires.

5. The renal artery sympathetic nerve ablation device according to claim 1, characterized in that: The control handle comprises an upper shell and a lower shell which are injection molded, and the upper shell is snap-connected with the lower shell.

6. The renal artery sympathetic nerve ablation device according to claim 1, characterized in that: The ablation device also includes a host power line connected to the host.

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