CN114788730A

CN114788730A - Epicardial ablation system

Info

Publication number: CN114788730A
Application number: CN202111593818.5A
Authority: CN
Inventors: 孙云; 戴会新; 李菲; 周凯; 彭亚军
Original assignee: Wuhan Topology Transformation Medical Research Center Co ltd
Current assignee: Wuhan Topology Transformation Medical Research Center Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-07-26

Abstract

The invention discloses an epicardium ablation system, which comprises an ablation catheter and an ablation electrode catheter, wherein the ablation catheter comprises a balloon, an adjustable bending structure, an endoscope, a guide wire channel, an ablation electrode channel and a guide wire, the endoscope is connected with an electrode controller, one end of the ablation catheter is connected with a handle, the middle part of one end of the handle is respectively provided with a knob and a push knob, the knob is connected with the adjustable bending structure through a traction wire, a positioning assembly is arranged between the knob and the push knob on the handle, a positioning ring is sleeved outside the handle at one end of the knob, and the positioning assembly is matched and connected with the positioning ring. Has the advantages that: the ablation catheter handle structure can lead the front end to keep the current bending state, can timely release the locking state through reversing the positioning component, and can lead a medical operator to operate with one hand under the conditions of controlling precision and stroke.

Description

Epicardial ablation system

Technical Field

The invention relates to the technical field of medical mapping catheters, in particular to an epicardial ablation system.

Background

Atrial fibrillation is one of the most common clinical tachyarrhythmia, and epidemiological data show that the total incidence rate of atrial fibrillation in China is about 0.7%, and the incidence rate gradually increase with the age. Atrial fibrillation can cause cerebral apoplexy and cardiac function deterioration, is an important reason for death and disability of patients, greatly reduces the life quality of people and increases social burden. Therefore, it is very important to treat atrial fibrillation. Due to the complex physiological structure of the human body, the distal ends of catheters with different shapes and handles with excellent control performance are needed, so that the catheters can accurately reach different focus parts and can adapt to focus parts with different structures, which is very challenging.

In the actual operation process, the diameter of the spiral part is bent and adjusted through two control keys on the control handle respectively, when the adjustment or the instruction is carried out, the bending control force in clinical operation can be ensured to be proper, the handle structure of the ablation catheter for one-hand operation of an operator can be ensured under the condition of ensuring the control precision and the stroke, and the handle structure of the ablation catheter is matched with a positioning structure suitable for one-hand operation of the operator.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

In view of the problems in the related art, the present invention provides an epicardial ablation system to overcome the above technical problems in the related art.

Therefore, the invention adopts the following specific technical scheme:

an epicardial ablation system comprises an ablation catheter and an ablation electrode catheter, wherein the ablation catheter comprises a balloon, an adjustable bending structure, an endoscope, a guide wire channel, an ablation electrode channel and a guide wire, the adjustable bending structure is arranged in the ablation catheter, the balloon is arranged at one end of the ablation catheter, the endoscope is arranged in the balloon, the ablation electrode channel and the guide wire channel are arranged at the lower end of the ablation catheter, the ablation electrode catheter is positioned in the ablation electrode channel, the guide wire is penetrated and wiped on the guide wire channel, an ablation electrode is arranged at the top end of the ablation electrode catheter, the ablation electrode catheter is arranged in the ablation electrode channel, the ablation electrode comprises a plurality of connecting ridges and connecting electrodes which are arranged at the front end of the ablation electrode catheter, a plurality of connecting electrodes are arranged on the connecting ridges, and the endoscope is connected with an electrode controller, the one end and the handle of melting pipe are connected, the one end middle part of handle is provided with the knob respectively and pushes away to turn round, the knob pass through the pull wire with adjustable curved structural connection, the handle is located the knob with it is provided with locating component to push away to turn round between, the pot head of knob is located the outside cover of handle is equipped with the holding ring, locating component with the holding ring cooperatees and connects.

Further, the handle is connected with the electrode controller through a plurality of connectors.

Furthermore, the endoscope is connected with the electrode controller through a connecting signal wire penetrating through the ablation catheter, and a display screen is arranged on the electrode controller.

Further, the connecting ridge is of an oval structure and is connected with the ablation electrode catheter.

Further, the connection ridges and the connection electrodes are located on a plane in one of an arrangement of columns, columns and columns.

Further, the locating component including be located with the swivel becket at handle middle part, the middle part of swivel becket is provided with a plurality of arcs, the bulge loop end of handle is provided with a plurality of interlude the gag lever post of arc, and, the lower extreme of gag lever post is provided with the limiting plate, the inside middle part of swivel becket is provided with solid fixed ring, the handle is located the inside of swivel becket and with gu fixed ring threaded connection's fastening barrel, gu fixed ring with be provided with a plurality of rotation connecting rods between the swivel becket, gu fixed ring inner wall be provided with the screw thread matched with screw thread adjusting cylinder of fastening barrel. And a limiting rubber pad connected with the positioning ring is arranged on the inner wall of the fastening screw barrel.

Furthermore, an anti-skid connecting ring is sleeved outside the rotating ring, and a plurality of anti-skid chutes are arranged outside the anti-skid connecting ring.

The invention provides an epicardium ablation system, which has the following beneficial effects: the invention is used in the treatment of epicardial atrial fibrillation. Can realize the separation and the support of pericardium and heart through the sacculus, can be convenient for observe through the endoscope, be convenient for confirm the region that need melt, in addition, the area of melting the electrode is big, quick effectual completion pulmonary vein is kept apart, through locating component, make the fastness of locating component and knob increase, a locking that lasts is carried out to the non-rotation state, and make the front end keep current bending state, through reversal locating component, locking state can be timely relieved, carry out the ablation catheter handle structure that can make the one-hand operation of doctor under the condition of control accuracy and stroke.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an epicardial ablation system in accordance with an embodiment of the invention;

FIG. 2 is a schematic view of an ablation catheter status of an epicardial ablation system in accordance with an embodiment of the invention;

FIG. 3 is a schematic illustration of an ablation electrode of an epicardial ablation system in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of an ablation electrode catheter of an epicardial ablation system in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of a knob connection of an epicardial ablation system in accordance with an embodiment of the invention;

FIG. 6 is a schematic view of a securing barrel of an epicardial ablation system in accordance with an embodiment of the present invention;

fig. 7 is a schematic view of a positioning assembly of an epicardial ablation system in accordance with an embodiment of the invention.

In the figure:

1. an ablation catheter; 2. an ablation electrode catheter; 3. a balloon; 4. a bendable structure; 5. an endoscope; 6. an ablation electrode channel; 7. a guide wire; 8. an ablation electrode; 9. a connecting ridge; 10. connecting the electrodes; 11. a handle; 12. a knob; 13. pushing and twisting; 14. a positioning assembly; 15. a positioning ring; 16. a connector; 17. a rotating ring; 18. an arc-shaped slot; 19. a limiting rod; 20. a fixing ring; 21. fastening the screw cylinder; 22. rotating the connecting rod; 23. a thread adjusting cylinder; 24. a limiting rubber pad; 25. an anti-slip connecting ring; 26. antiskid chute.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable one skilled in the art to understand the embodiments and advantages of the disclosure for reference and without scale, wherein elements are not shown in the drawings and like reference numerals are used to refer to like elements generally.

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

The first embodiment is as follows:

as shown in fig. 1 to 7, an epicardial ablation system according to an embodiment of the 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 guide wire channel, an ablation electrode channel 6 and a guide wire 7, the adjustable bending structure 4 is disposed inside the ablation catheter 1, the balloon 3 is disposed at one end of the ablation catheter 1, the endoscope 5 is disposed inside the balloon 3, the ablation electrode channel 6 and the guide wire channel are disposed at the lower end of the ablation catheter 1, the ablation electrode catheter 2 is located inside the ablation electrode channel 6, the guide wire 7 is penetrated and wiped on the guide wire channel, an ablation electrode 8 is disposed at the top end of the ablation electrode catheter 2, the ablation electrode channel 6 is disposed inside the ablation electrode catheter 2, the ablation electrode 8 includes a plurality of connecting ridges 9 and a plurality of connecting electrodes 10 which are disposed at the front end of the ablation electrode catheter 2, connect and be provided with a plurality of connecting electrode 10 on the spine 9, endoscope 5 is connected with electrode controller, the one end and the handle 11 of ablation pipe 1 are connected, the one end middle part of handle 11 is provided with knob 12 respectively and pushes away and turns round 13, knob 12 pass through the pull wire with adjustable curved structure 4 is connected, handle 11 is located knob 12 with it is provided with locating component 14 to push away to turn round between 13, a pot head of knob 12 is located 11 outside covers of handle is equipped with locating ring 15, locating component 14 with locating ring 15 cooperatees and connects.

Example two:

as shown in fig. 1-7, the handle 11 is connected to the electrode controller by a number of connectors 16. The endoscope 5 is connected with the electrode controller through a connecting signal wire penetrating through the ablation catheter 1, and a display screen is arranged on the electrode controller. The connecting ridge 9 is of an oval structure, and the connecting ridge 9 is connected with the ablation electrode catheter 2. The connection ridges 9 and the connection electrodes 10 are located in one of 2 columns, 3 columns, 4 columns and 5 columns on a plane.

As shown in fig. 1-7, locating component 14 including be located with the swivel becket 17 at handle 11 middle part, the middle part of swivel becket 17 is provided with a plurality of arcs 18, the bulge loop end of handle 11 is provided with a plurality of interlude the gag lever post 19 of arc 18, and, the lower extreme of gag lever post 19 is provided with the limiting plate, the inside middle part of swivel becket 17 is provided with solid fixed ring 20, handle 11 is located swivel becket 17 inside and with solid fixed ring 20 threaded connection's fastening barrel 21, gu fixed ring 20 with be provided with a plurality of rotating connecting rod 22 between the swivel becket 17, gu fixed ring 20 inner wall be provided with fastening barrel 21's screw thread matched with screw thread adjusting barrel 23. And a limiting rubber pad 24 connected with the positioning ring is arranged on the inner wall of the fastening screw barrel 21. The outer part of the rotating ring 17 is sleeved with an anti-skid connecting ring 25, and a plurality of anti-skid inclined grooves 26 are arranged on the outer part of the anti-skid connecting ring 25.

For the convenience of understanding the above technical solution of the present invention, the following detailed description is made on the flow of the above solution of the present invention with reference to the accompanying drawings, and specifically is as follows:

according to another aspect of the present invention, there is provided a method of epicardial ablation;

the epicardial ablation system includes the following operational steps:

the method comprises the following steps: entering from a 1-inch incision below the xiphoid process, performing pericardiocentesis, and pushing a guide wire 7 along the puncture position;

step two: a guide wire channel of the ablation catheter 1 is passed along the guide wire 7, and the ablation catheter 1 is pushed into the pericardium along the guide wire 7;

step three: expanding a balloon 3 at the head end of the ablation catheter 1 in the pericardium to expand the space in the pericardium, observing the internal environment by using an endoscope 5, searching the position of a pulmonary vein, and confirming an ablation area;

step four: the guide wire 7 is retracted, the ablation electrode 8 is pushed out to be positioned in the ablation area, the balloon 3 is contracted at the moment, the irreversible electroporation ablation equipment is opened, ablation parameters are set, and ablation is started;

step five: moving a certain distance left and right between the pulmonary veins, and carrying out ablation again to ensure complete ablation;

step six: after the high-voltage pulse ablation is finished, the ablation electrode 8 is retracted into the ablation catheter 1, and then the catheter is withdrawn from the pericardium and the chest cavity in sequence, so that the ablation is finished.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

In practical application, during surgery, the guide wire 7 is firstly placed into the pericardium, the guide wire 7 is inserted along the guide wire channel of the ablation catheter 1, and the ablation catheter 1 is guided to be immersed into the pericardium; after the ablation catheter 1 is immersed in the pericardium, the balloon 3 is expanded to separate the pericardium from the epicardial part, the internal condition is observed by using the endoscope 5, the position of the pulmonary vein is searched, and an ablation area is determined;

when observing the pericardium, the most suitable ablation area can be found by adjusting the lens of the endoscope 5 or adjusting the bending structure of the ablation catheter 1, the ablation electrode catheter 2 enters from the corresponding channel of the ablation catheter 1, all the connecting electrodes 10 are arranged on the same plane, a certain distance is kept between the connecting electrodes 10, the ablation electrode 8 is pushed out from the channel during ablation, and the whole connecting electrode 10 plane is positioned between the pericardium and the epicardium;

irreversible electroporation is a rapid, safe and efficient technique for ablating energy to achieve and achieve durable pulmonary vein isolation without damaging adjacent tissues; after the pericardium puncture under the xiphoid process, the design of the balloon 3 is convenient for expanding the area between the pericardium and the epicardium; the visual design of arranging the endoscope 5 in the ablation catheter 1 can improve the efficiency of searching for an ablation area; the planar ablation electrode design enables the ablation effect to be more effective;

after the fixing, the anti-slip connecting ring 25 on the positioning assembly 14 is used, the anti-slip connecting ring 25 is manually moved and drives the rotating ring 17 to rotate, the rotating ring 17 pushes the rotating connecting rod 22 in the rotating process so as to fasten and connect the thread adjusting cylinder 23 on the fixing ring 20 and the thread outer wall of the fastening screw cylinder 21, the rotating connecting rod 22 moves the fixing ring 20, the internal thread movement of the fixing ring 20 enables the thread adjusting cylinder 23 to move, so that the thread adjusting cylinder 23 tightens the fastening screw cylinder 21, and the positioning ring 15 connected with the knob 12 is clamped under the limiting rubber gasket 24, so that the firmness of the positioning assembly 14 and the knob 12 is increased, the non-rotating state is continuously locked, the front end is kept in the current bending state, the handle structure of the ablation catheter enables a surgeon to operate with one hand while timely releasing the locked state and controlling the precision and the stroke by reversing the positioning component 14.

In conclusion, the technical scheme of the invention is used for treating the epicardial atrial fibrillation. The pericardium and the heart can be separated and supported through the balloon 3, observation can be facilitated through the endoscope 5, the area needing to be ablated is convenient to determine, in addition, the area of the ablation electrode 8 is large, pulmonary vein isolation can be rapidly and effectively completed, the positioning assembly 14 is used for increasing the firmness of the positioning assembly 14 and the knob 12, a continuous locking is carried out in a non-rotating state, the front end is kept in a current bending state, the locking state can be timely released through reversing the positioning assembly 14, and the ablation catheter handle structure can be used for enabling a medical operator to operate with one hand under the conditions of control precision and stroke.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.

Claims

1. The epicardial ablation system is characterized by comprising 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 guide wire channel, an ablation electrode channel (6) and a guide wire (7), the adjustable bending structure (4) is arranged in the ablation catheter (1), the balloon (3) is arranged at one end of the ablation catheter (1), the endoscope (5) is arranged in the balloon (3), the ablation electrode channel (6) and the guide wire channel are arranged at the lower end of the ablation catheter (1), the ablation electrode catheter (2) is positioned in the ablation electrode channel (6), the guide wire (7) penetrates and wipes the guide wire channel, an ablation electrode (8) is arranged at the top end of the ablation electrode catheter (2), the ablation electrode catheter (2) is arranged in the ablation electrode channel (6), ablation electrode (8) are including being located the front end of ablation electrode pipe (2) is provided with a plurality of connection ridges (9) and connection electrode (10), be provided with a plurality of connection electrodes (10) on connection ridge (9), endoscope (5) are connected with the electrode control ware, the one end and the handle (11) of ablating pipe (1) are connected, the one end middle part of handle (11) is provided with knob (12) respectively and pushes away and turns round (13), knob (12) through the pull wire with but turn round structure (4) are connected, handle (11) are located knob (12) with it turns round to push away and is provided with locating component (14) between (13), the pot head of knob (12) is located handle (11) outside cover is equipped with locating ring (15), locating component (14) with locating ring (15) cooperate and connect.

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

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

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

5. An epicardial ablation system according to claim 1, characterized in that the connecting ridges (9) and the connecting electrodes (10) are located in one of 2, 3, 4 and 5 rows in plan.

6. The epicardial ablation system of claim 1, characterized in that the positioning assembly (14) includes a rotating ring (17) located in a middle portion of the handle (11), a plurality of arc-shaped grooves (18) are arranged in the middle of the rotating ring (17), a plurality of limiting rods (19) penetrating through the arc-shaped grooves (18) are arranged at the convex ring end of the handle (11), in addition, a limiting plate is arranged at the lower end of the limiting rod (19), a fixing ring (20) is arranged in the middle of the inner part of the rotating ring (17), the handle (11) is positioned in the rotating ring (17) and is connected with the fastening screw cylinder (21) of the fixed ring (20) in a threaded manner, a plurality of rotating connecting rods (22) are arranged between the fixed ring (20) and the rotating ring (17), the inner wall of the fixing ring (20) is provided with a thread adjusting cylinder (23) matched with the thread of the fastening screw cylinder (21). And a limiting rubber pad (24) connected with the positioning ring is arranged on the inner wall of the fastening screw cylinder (21).

7. The epicardial ablation system according to claim 6, characterized in that the rotating ring (17) is sleeved with an anti-slip connecting ring (25), and the anti-slip connecting ring (25) is provided with a plurality of anti-slip chutes (26) on the outside.