Inflorescence-shaped electrophysiological mapping catheter device

Abstract

The present invention discloses an inflorescence-shaped electrophysiological mapping catheter device. The inflorescence-shaped electrophysiological mapping catheter device includes a catheter, a handle device, electrodes, and a connector. The catheter includes an adjustment tube, a plurality of first branch tubes, and a plurality of second branch tubes. One ends of the plurality of first branch tubes are all connected to the adjustment tube, and the other ends are distributed in a divergent manner with a dislocation, and electrodes are respectively arranged on each of the first branch tubes; one ends of the plurality of second branch tubes are all connected to the adjustment tube, and the other ends are distributed in a divergent manner with a dislocation, and the included angle between the second branch tube and the adjustment tube is smaller than the included angle between the first branch tube and the adjustment tube, and electrodes are respectively arranged on each of the second branch tubes. The handle device can adjust the bending angle of the distal end of the adjustment tube; the connector is arranged on the handle device and is electrically connected to the electrodes. The inflorescence-shaped electrophysiological mapping catheter device can adapt to the irregular heart cavities in the three-dimensional space and can record the electrophysiological signals at a large number of folds or loose gullies on the inner surface of the heart cavity.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to an inflorescence-shaped electrophysiological mapping catheter device. Background Art

[0002] Atrial fibrillation is one of the most common arrhythmias in clinical practice. As a minimally invasive treatment method with less trauma and high cure rate, electrophysiological minimally invasive surgery has made rapid progress in the treatment of atrial fibrillation. In electrophysiological minimally invasive interventional surgery, a mapping catheter is first inserted through a vein, and the catheter is pushed to reach the heart cavity. By moving the catheter and adjusting the angle of the catheter tip, the front electrode is brought into contact with the inner wall of the heart cavity, and the electrical potentials at different parts of the heart are synchronously recorded. The mapping catheter is used in combination with a three-dimensional mapping system to achieve three-dimensional reconstruction of the heart. By observing the conduction sequence and speed, the electrophysiological mechanism of the occurrence of arrhythmia is clarified, which serves as the basis for the diagnosis of arrhythmia. After the diagnosis, an ablation catheter is then pushed to a specific site in the heart cavity where the arrhythmia occurs for precise ablation to achieve the purpose of treating arrhythmia. Finally, an electrophysiological mapping catheter is used to verify the treatment effect on arrhythmia.

[0003] Due to the complex internal physiological structure of the heart, the three-dimensional shape of its inner cavity is irregular in itself, and its inner surface is not smooth, with some uneven strip-shaped grooves or loose pits and other microstructures. The electrophysiological mapping catheters in the prior art are difficult to accurately record the electrical signals of the irregular structure and non-smooth inner wall of the heart cavity. In addition to the narrow space in the heart cavity, for the strip-shaped grooves formed by the pectinate muscles in the atrium and the loose reticular pit structures formed by the trabecular muscles in the ventricle, the current electrophysiological mapping catheters cannot collect the electrophysiological signals at these complex anatomical structures. Therefore, the three-dimensional mapping diagram given by them cannot accurately diagnose the lesions, which will cause trouble to doctors. Summary of the Invention

[0004] Based on this, it is necessary to provide an inflorescence-shaped electrophysiological mapping catheter device. After the outer branches of the inflorescence-shaped electrophysiological mapping catheter device are unfolded, they can cover a large area of the endocardium. One-time mapping can record a large surface area in the heart cavity. The inner branches are short and soft, can adapt to the irregular three-dimensional space of the heart cavity, and at the same time, for a large number of folds or loose grooves in the heart cavity, it can accurately, quickly and efficiently collect electrical signals. The final result can form a more accurate three-dimensional image in a shorter time, reducing the difficulty for doctors to identify and facilitating the surgical operation of doctors.

[0005] An inflorescence-shaped electrophysiological mapping catheter device includes a catheter, a handle device, electrodes, and a connector. The catheter includes an adjustment tube, a plurality of first branch tubes, and a plurality of second branch tubes. One ends of the plurality of first branch tubes are all connected to the adjustment tube, and the other ends are distributed in a divergent manner with a dislocation. Each of the first branch tubes is provided with the electrode; one ends of the plurality of second branch tubes are all connected to the adjustment tube, and the other ends are distributed in a divergent manner with a dislocation. The acute angle formed between the second branch tube and the adjustment tube is smaller than the angle formed between the first branch tube and the adjustment tube so that the second branch tube is distributed outside the first branch tube. Each of the second branch tubes is provided with the electrode. The handle device can adjust the bending angle of the distal end of the adjustment tube; the connector is arranged on the handle device and is electrically connected to the electrode, and the connector is also used for connecting to an electrophysiological system to transmit the electrical signal detected by the electrode.

[0006] In one embodiment, two ends of the first branch tube respectively form a first connection end and a first detection end. The first detection ends are distributed in a divergent manner with a dislocation. Each of the first detection ends is provided with the electrode, and the first connection ends are all connected to the adjustment tube;

[0007] And / or, two ends of the second branch tube respectively form a second connection end and a second detection end. The second detection ends are distributed with a dislocation. Each of the second detection ends is provided with the electrode, and the second connection ends are all connected to the adjustment tube.

[0008] In one embodiment, the length of the second branch tube is greater than the length of the first branch tube.

[0009] In one embodiment, the first branch tube has flexibility;

[0010] And / or, the second branch tube has flexibility.

[0011] In one embodiment, the number of the second branch tubes is more than the number of the first branch tubes.

[0012] In one embodiment, the electrode includes a ring electrode and a ball head electrode. At least one of the ball head electrode or the ring electrode is arranged on the first branch tube, and at least one of the ring electrode or the ball head electrode is arranged on the second branch tube.

[0013] In one embodiment, the inner side wall of the ring electrode is electrically connected to the connector through a wire;

[0014] And / or, the ball head electrode has a blind hole for embedding a wire, and the ball head electrode is electrically connected to the connector through the wire embedded in the blind hole.

[0015] In one embodiment, the width of the annular electrode is 0.2 - 2 mm and the outer diameter is 0.3 - 1 mm;

[0016] and / or, when the number of the annular electrodes on the first branch pipe or the second branch pipe is multiple, the pole pitch between adjacent annular electrodes is 1 - 10 mm;

[0017] and / or, when the number of the annular electrodes on the first branch pipe or the second branch pipe is multiple, the pole pitch between adjacent annular electrodes is equal.

[0018] In one embodiment, along the radial direction, the first branch pipe and the second branch pipe are distributed at intervals.

[0019] In one embodiment, the adjusting pipe includes a distal end connected to the branch conduit and a proximal end connected to the handle device. The inflorescence-shaped electrophysiological mapping catheter device further includes at least one adjusting wire. One end of the adjusting wire is arranged on the inner wall of the adjusting pipe, and the other end of the adjusting wire is connected to the handle device.

[0020] In one embodiment, the distal end has a first lumen. One end of the first lumen opens at the end face of the distal end and the other end is used to communicate with a perfusion pipe arranged in the proximal end. The perfusion pipe extends to the handle device and communicates with an extension pipe connected to the handle device and used for externally connecting a perfusion pump.

[0021] In one embodiment, the distal end has a second lumen for the wire of the electrode to pass through.

[0022] In one embodiment, the distal end has a third lumen for the adjusting wire to pass through.

[0023] After the distal outer branches of the inflorescence-shaped electrophysiological mapping catheter device of the present invention are deployed, they can cover a large area of the endocardium. One mapping can record a large surface area in the heart cavity. The inner branches are short and flexible, can adapt to the irregular three-dimensional space of the heart cavity, and can accurately, quickly and efficiently collect electrical signals at a large number of folds or loose grooves in the heart cavity. The final result can form a more accurate three-dimensional image in a shorter time, reducing the difficulty for doctors to identify and facilitating the surgical operation of doctors. Compared with the prior art, the ends of the first branch tube and the second branch tube in the inflorescence-shaped electrophysiological mapping catheter device of the present invention present a capitulum inflorescence structure. The second branch tube is longer and has a large coverage area, which can significantly improve the mapping efficiency. The first branch tube is relatively short and flexible and can be used for mapping the fine structure of the heart cavity. Under the combined action of the first branch tube, the second branch tube and the electrodes thereon, it can not only achieve fast and efficient mapping and shorten the mapping time, but also achieve fine mapping of the fine structure, making the three-dimensional mapping graph more accurate. Brief Description of the Drawings

[0024] Figure 1 Schematic diagram of the overall structure of the inflorescence-shaped electrophysiological mapping catheter device according to an embodiment of the present invention;

[0025] Figure 2 is Figure 1 Partial structure schematic diagram of the inflorescence-shaped electrophysiological mapping catheter device shown;

[0026] Figure 3 is Figure 1 Radial plane schematic diagram of the inflorescence-shaped electrophysiological mapping catheter device shown;

[0027] Figure 4 is Figure 1 Schematic diagram of the ball head electrode of the inflorescence-shaped electrophysiological mapping catheter device shown;

[0028] Figure 5 is Figure 1 Schematic diagram of the matching of the ball head electrode and the first branch tube in the inflorescence-shaped electrophysiological mapping catheter device shown;

[0029] Figure 6 is Figure 1 Radial cross-sectional schematic diagram of the adjusting tube of the inflorescence-shaped electrophysiological mapping catheter device shown.

[0030] Description of the Reference Numerals

[0031] 10. Inflorescence-shaped electrophysiological mapping catheter device; 100, 101, 102, 103, 104, 105, first branch tubes; 110, first detection end; 120, first connection end; 200, 201, 202, 203, 204, 205, second branch tubes; 210, second detection end; 220, second connection end; 300, adjustment tube; 310, distal end; 311, first lumen; 312, second lumen; 313, third lumen; 314, outer layer; 315, intermediate layer; 316, inner layer; 317, perfusion tube; 320, proximal end; 400, handle device; 510, ring electrode; 520, ball head electrode; 521, boss structure; 522, blind hole; 600, connector; 700, wire; 800, extension tube; 900, Luer connector; 1000, adjustment cable. Detailed implementation mode

[0032] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0033] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "bottom", "inner", "outer", etc. used in the present invention indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] It should be understood that the terms "first", "second", etc. used in the present invention are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information can also be called the "second" information, and similarly, the "second" information can also be called the "first" information.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. It may be the communication inside two components. That is, when an element is referred to as "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] Please refer to Figure 1 As shown, an embodiment of the present invention provides an inflorescence-shaped electrophysiological mapping catheter device 10.

[0038] An inflorescence-shaped electrophysiological mapping catheter device 10 includes a catheter, a handle device 400, electrodes, and a connector 600. The catheter includes a first branch tube 100, a second branch tube 200, and an adjustment tube 300.

[0039] The number of the first branch tubes 100 is multiple. One ends of the multiple first branch tubes 100 are all connected to the adjustment tube 300 and the other ends are distributed in a divergent manner with a dislocation. Electrodes are respectively arranged on each of the first branch tubes 100. The number of the second branch tubes 200 is multiple. One ends of the multiple second branch tubes 200 are all connected to the adjustment tube 300 and the other ends are distributed in a divergent manner with a dislocation. The included angle between the second branch tube 200 and the adjustment tube 300 is smaller than the included angle between the first branch tube 100 and the adjustment tube 300 so that the second branch tube 200 is distributed outside the first branch tube 100. For example, the multiple first branch tubes 100 enclose an umbrella-shaped structure, the multiple second branch tubes 200 also enclose an umbrella-shaped structure, and the umbrella-shaped structure enclosed by the first branch tubes 100 is located inside the umbrella-shaped structure enclosed by the second branch tubes 200.

[0040] Electrodes are respectively provided on each second branch tube 200, the adjustment tube 300 is flexible, and the adjustment tube 300 is also connected to and controlled by the handle device 400. The connector 600 is provided on the handle device 400 and is electrically connected to the electrodes. The connector 600 is also used to connect to the electrophysiological system to transmit the electrical signals detected by the electrodes.

[0041] At least one adjustment wire is embedded in the wall of the adjustment tube 300, and the adjustment wire is connected to the handle device 400. The bending angle of the distal end 310 of the adjustment tube 300 can be changed by operating the controller arranged on the handle device 400. The bending angle of the distal end 310 of the adjustment tube can be unidirectionally adjusted or bidirectionally adjusted.

[0042] In one specific example, the two ends of the first branch tube 100 respectively form a first connecting end 120 and a first detecting end 110 , the first detecting ends 110 are staggered, each first detecting end 110 is provided with an electrode, and the first connecting ends 120 are connected to the regulating tube 300 .

[0043] In one specific example, the two ends of the second branch tube 200 respectively form a second connection end 220 and a second detection end 210 , the second detection ends 210 are staggered, each second detection end 210 is provided with an electrode, and the second connection ends 220 are connected to the regulating tube 300 .

[0044] In one specific example, the length of the second branch pipe 200 is greater than the length of the first branch pipe 100 .

[0045] In one specific example, the first branch tube 100 and the second branch tube 200 are both flexible, and can be repositioned after being retracted by an external force and when the external force disappears. When in use, the first branch tube 100 and the second branch tube 200 are put into a sheath, and the catheter is pushed. After the first branch tube 100 and the second branch tube 200 are extended from the sheath, they can naturally spread out to form an inner and outer double-layer capitulum shape.

[0046] In one specific example, the number of the second branch pipes 200 is greater than the number of the first branch pipes 100 .

[0047] Further, the number of the second branch pipes 200 is preferably between 3 and 12. The second branch pipes 200 diverge in an umbrella shape. The plurality of second branch pipes 200 can also be divided into multiple groups, and the second branch pipes 200 in each group are circumferentially symmetrical relative to the axial direction of the regulating pipe 300, and the branches between each group are staggered.

[0048] like Figure 2 , Figure 3As shown, in one embodiment, the second branch pipes 200 are sequentially numbered 201, 202, 203, 204, 205 in the counterclockwise direction. In the natural state, the second branch pipes 200 diverge outward, and the lengths of the second branch pipes 200 are equal. The first branch pipes 100 are sequentially numbered 101, 102, 103, 104, 105 in the counterclockwise direction. The lengths of the first branch pipes 100 are equal. The length of the first branch pipes 100 is significantly less than the length of the second branch pipes 200. The angle formed by the first branch pipes 100 and the axial direction of the adjustment pipe 300 is also significantly less than the angle formed by the second branch pipes 200 and the axial direction of the adjustment pipe 300. With such a setting, the second branch pipes 200 can be distributed outside the first branch pipes 100.

[0049] In one specific example, the electrode includes a ring electrode 510 and a ball head electrode 520. At least one ball head electrode 520 or ring electrode 510 is provided on the first branch pipe 100, and at least one ring electrode 510 or ball head electrode 520 is provided on the second branch pipe 200.

[0050] In one specific example, the inner side wall of the ring electrode 510 is electrically connected to the connector 600 through a wire 700.

[0051] In one specific example, see Figure 4 As shown, the ball head electrode 520 has a blind hole 522 for embedding the wire 700. The ball head electrode 520 is electrically connected to the connector 600 through the wire 700 embedded in the blind hole 522. Specifically, as Figure 4 As shown, the ball head electrode 520 is a cylinder with a boss structure 521. The diameter of the tail is smaller than the diameter of the head. The end face of the head is arc-shaped and tangent to the outer periphery of the head. The tail is used to insert into the first branch pipe 100. The boss structure 521 is adapted to the end face of the first branch pipe 100. The diameter of the head is equal to the outer diameter of the first branch pipe 100. The end face of the tail has a blind hole 522 with a certain depth. After one end of the wire 700 is de-painted, it is inserted into the blind hole 522 and connected by welding.

[0052] As Figure 5 As shown, the ball head electrode 520 is sleeved on the end of the first branch pipe 100, and the wire 700 is inserted into the blind hole 522 of the ball head electrode 520. The ring electrode 510 is sleeved on the first branch pipe 100. Small holes are opened on the surface of the first branch pipe 100 for passing the wire 700. One end of the wire 700, which is insulated from each other, is welded inside the ring electrode 510. The wire 700 passes through the first branch pipe 100 and the adjustment pipe 300 and is then connected to the connector 600.

[0053] In one embodiment, the width of the ring electrode 510 is 0.2 - 2 mm, and the outer diameter is 0.3 - 1 mm.

[0054] In one specific example, when the number of the ring electrodes 510 on the first branch pipe 100 or the second branch pipe 200 is multiple, the pole pitch between adjacent ring electrodes 510 is 1-10 mm.

[0055] In one specific example, when the number of the ring electrodes 510 on the first branch pipe 100 or the second branch pipe 200 is multiple, the pole pitches between adjacent ring electrodes 510 are equal. Insulated wires 700 that are connected to the connector 600 are respectively connected to the inner surfaces of the ring electrodes 510.

[0056] Preferably, in one embodiment, the electrode is processed from materials such as platinum, platinum-iridium alloy, and gold.

[0057] In one specific example, along the radial direction, the first branch pipe 100 and the second branch pipe 200 are spaced apart.

[0058] In one specific example, the adjustment tube includes a distal end portion 310 connected to the branch catheter and a proximal end portion 320 connected to the handle device 400. The inflorescence-shaped electrophysiological mapping catheter device 10 further includes at least one adjustment wire 1000. One end of at least one adjustment wire 1000 is arranged on the inner wall of the adjustment tube 300, and the other end of the adjustment wire 1000 is connected to the handle device 400.

[0059] See Figure 6 As shown, in one specific example, the distal end portion 310 has a first lumen 311. One end of the first lumen 311 opens at the end face of the distal end portion 310, and the other end is used to communicate with an irrigation tube 317 provided in the proximal end portion 320, for delivering physiological saline to the distal end portion 310 through the irrigation tube 317 to prevent thrombus formation at the distal end portion 310.

[0060] In one specific example, a part of the irrigation tube 317 is located in the first lumen 311 and another part extends into the extension tube 800. The end of the extension tube 800 is provided with a standard luer connector 900, and the luer connector 900 is connected to an irrigation pump.

[0061] In one specific example, the distal end portion 310 has a second lumen 312 for the wires 700 of the electrode to pass through.

[0062] In one specific example, the distal end portion 310 has a third lumen 313 for the adjustment wire 1000 to pass through. Among them, the number of the third lumens 313 can be two. The radial cross-sectional shapes of the first lumen 311, the second lumen 312, and the third lumen 313 can be set as required.

[0063] In one specific example, the preparation material of the branch catheter is selected from one or more of polyimide, polyether, polyester, nylon, and their copolymers.

[0064] Further, referring to Figure 6 As shown, the adjustment tube 300 includes three layers along the radial direction, including an outer layer 314, an intermediate layer 315, and an inner layer 316.

[0065] The outer layer 314 is composed of single-segment or multi-segment plastic pipe materials, and the outer layer 314 is coated with a hydrophilic coating to increase smoothness; the plastic pipe materials are mainly composed of polyimide, polyether, polyester, nylon, and their copolymers. The intermediate layer 315 is a metal reinforcement structure, and the reinforcement methods are woven mesh, spiral spring, or a composite of woven mesh and spiral spring. The metal reinforcement structure enables the adjustment tube 300 to have good torsion control, anti-bending property, and flexibility; the reinforcement metals in the metal reinforcement structure are mainly stainless steel, tungsten, nitinol alloy, etc. The inner layer 316 is made of polytetrafluoroethylene material, which makes the inner layer 316 have good smoothness. Along the axial direction, the hardness of the plastic pipe materials of the outer layer 314 gradually decreases from the proximal end to the distal end. The part of the intermediate layer 315 close to the handle device 400 is a woven mesh, and the part close to the distal end 311 of the adjustment tube is a woven mesh or a spiral spring.

[0066] The woven mesh is woven from round wires with a diameter of 0.01 - 0.1 mm, or it can also be woven from flat wires with a thickness range of 0.01 - 0.04 mm and a width range of 0.03 - 0.08 mm. The woven mesh is made by a weaving process with 16 or 32 strands and a pore density of 40 to 150 PPI.

[0067] The thickness range of the spiral spring wire is 0.01 - 0.04 mm, the width range of the spiral wire is 0.03 - 0.12 mm, the length of the spiral section is 15 - 80 cm, and the pitch of the spiral spring wire is 0.1 - 0.5 mm.

[0068] In one specific example, the preparation material of the first branch tube 100 is selected from one or more of polyimide, polyether, polyester, nylon, and their copolymers. Both the first branch tube 100 and the second branch tube 200 are single-layer thin-walled tubes.

[0069] In one specific example, the preparation material of the second branch tube 200 is selected from one or more of polyimide, polyether, polyester, nylon, and their copolymers.

[0070] In one specific example, the preparation material of the adjustment tube 300 is selected from one or more of polyimide, polyether, polyester, nylon, and their copolymers.

[0071] The adjustment tube 300 is embedded with a stainless steel wire mesh, so that the adjustment tube 300 has good torsion control, anti-bending and flexibility. The stainless steel wire mesh is woven from 16 or 32 stainless steel wires with a diameter of 0.02 - 0.1 mm, and the pore density of the mesh holes of the stainless steel wire mesh is 20 - 100 PPI.

[0072] Small holes are opened at the positions on the surface of the first detection end 110 for fixing the electrode and the surface of the second detection end 210 for fixing the electrode. The small holes are used for one end of the corresponding wire 700 to pass through and be electrically connected to the inner wall of the electrode.

[0073] Furthermore, the wire 700 is an enameled wire, the core wire material is any metal with high conductivity such as copper, gold, silver, etc., and its outer surface contains an insulating layer. The wire 700 has a diameter of 0.05 - 0.20 mm. The preparation material of the insulating layer is selected from one or several of polyimide resin, polyurethane resin, polyester resin, polyesterimide, polyamideimide and composite polyesterimide.

[0074] When the inflorescence-shaped electrophysiological mapping catheter device 10 of the present invention is in use, it includes the following steps:

[0075] (1) Puncture the femoral artery / vein unilaterally and insert a guide wire catheter.

[0076] (2) Insert an interatrial septum puncture sheath and puncture the interatrial septum.

[0077] (3) Insert the inflorescence-shaped electrophysiological mapping catheter device 10 into the heart cavity through the puncture sheath, and connect the connector 600 to an electrophysiological system such as a multi-channel recorder. Continue to push the inflorescence-shaped electrophysiological mapping catheter device 10 so that the electrodes on the second branch tube 200 are in contact with the inner wall of the heart cavity. The detection end of the first branch tube 100 can extend into the folds or grooves in the pectinate muscles or trabecular muscles in the heart cavity. At this time, the bending shape of the distal end 310 of the adjustment tube 300 can be changed through the handle device 400 at the same time, so that the electrodes on the first detection end 110 of the first branch tube 100 can contact the heart cavity wall more fully.

[0078] (4) The electrodes on the first detection end 110 of the first branch tube 100 and the second detection end 210 of the second branch tube 200 receive and can transmit and express the electrocardiogram signals in the heart cavity. By observing the electrocardiogram, the doctor can determine the lesion site and provide help for subsequent ablation surgery.

[0079] (5) Perform ablation surgery.

[0080] (6) After ablation, perform intracardiac mapping in step (3) again. If the lesion is completely eliminated, withdraw the guide wire catheter; if the lesion is not completely eliminated, continue with ablation surgery until the lesion is completely eliminated.

[0081] After the distal outer branches of the inflorescence-shaped electrophysiological mapping catheter device 10 of the present invention are deployed, they can cover a large area of the endocardium. One-time mapping can record a large surface area in the heart cavity. The inner branches are short and flexible, can adapt to the irregular three-dimensional space of the heart cavity. At the same time, for a large number of folds or loose gullies in the heart cavity, it can accurately, quickly and efficiently collect electrical signals. The final result can form a more accurate three-dimensional image in a shorter time, reducing the difficulty for doctors to identify and facilitating the surgical operation of doctors. Compared with the prior art, in the inflorescence-shaped electrophysiological mapping catheter device 10 of the present invention, the ends of the first branch tube 100 and the second branch tube 200 present a capitulum inflorescence structure. The second branch tube 200 is relatively long and forms a large coverage area, which can significantly improve the mapping efficiency. The first branch tube 100 is relatively short and flexible and can be used for mapping the fine structures of the heart cavity. Under the combined action of the first branch tube 100, the second branch tube 200 and the electrodes thereon, it can not only achieve rapid and efficient mapping, shorten the mapping time, but also achieve fine mapping of fine structures, making the three-dimensional mapping pattern more accurate.

[0082] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0083] The above-described embodiments merely represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. An inflorescence-shaped electrophysiological mapping catheter device, characterized in that, Comprising a catheter, a handle device, electrodes and a connector, the catheter includes an adjustment tube, a plurality of first branch tubes and a plurality of second branch tubes. The first branch tubes are flexible, and the second branch tubes are flexible. The two ends of the first branch tubes respectively form a first connection end and a first detection end, and the first detection ends are distributed in a staggered manner in a divergent shape. The electrodes are respectively arranged on each of the first detection ends. The first connection ends are all connected to the adjustment tube; the two ends of the second branch tubes respectively form a second connection end and a second detection end, and the second detection ends are distributed in a staggered manner. The electrodes are respectively arranged on each of the second detection ends. The second connection ends are all connected to the adjustment tube. The included angle between the second branch tube and the adjustment tube is smaller than the included angle between the first branch tube and the adjustment tube so that the second branch tube is distributed outside the first branch tube. The handle device can adjust the bending angle of the distal end of the adjustment tube; the connector is arranged on the handle device and is electrically connected to the electrodes, and the connector is also used to connect to an electrophysiological system to transmit the electrical signals detected by the electrodes.

2. The inflorescence-shaped electrophysiological mapping catheter device according to claim 1, wherein The length of the second branch tube is greater than the length of the first branch tube.

3. The inflorescence-shaped electrophysiological mapping catheter device according to claim 1, wherein, The number of the second branch tubes is more than the number of the first branch tubes.

4. The inflorescence-shaped electrophysiological mapping catheter device according to claim 1, wherein The electrodes include ring electrodes and ball head electrodes. At least one of the ball head electrodes or the ring electrodes is arranged on the first branch tube, and at least one of the ring electrodes or the ball head electrodes is arranged on the second branch tube.

5. The inflorescence-shaped electrophysiological mapping catheter device according to claim 4, characterized in that, The inner side wall of the ring electrode is electrically connected to the connector through a wire.

6. The inflorescence-shaped electrophysiological mapping catheter device according to claim 4, characterized in that, The ball head electrode has a blind hole for embedding a wire, and the ball head electrode is electrically connected to the connector through the wire embedded in the blind hole.

7. The inflorescence-shaped electrophysiological mapping catheter device according to claim 4, characterized in that, The width of the ring electrode is 0.2 - 2 mm, and the outer diameter is 0.3 - 1 mm; And / or, when the number of the ring electrodes on the first branch tube or the second branch tube is multiple, the pole pitch between adjacent ring electrodes is 1 - 10 mm.

8. The inflorescence-shaped electrophysiological mapping catheter device according to claim 4, wherein When the number of the ring electrodes on the first branch tube or the second branch tube is multiple, the pole pitch between adjacent ring electrodes is equal.

9. The inflorescence-shaped electrophysiological mapping catheter device according to any one of claims 1-8, characterized in that, Along the radial direction, the first branch tube and the second branch tube are spaced apart.

10. The inflorescence-shaped electrophysiological mapping catheter device according to any one of claims 1-8, characterized in that, The adjustment tube includes a distal end connected to the branch tube and a proximal end connected to the handle device. The inflorescence-shaped electrophysiological mapping catheter device further includes at least one adjustment wire. One end of the adjustment wire is arranged on the inner wall of the adjustment tube, and the other end of the adjustment wire is connected to the handle device.

11. The inflorescence-shaped electrophysiological mapping catheter device according to claim 10, wherein, The distal end has a first lumen. One end of the first lumen opens at the end face of the distal end and the other end is used to communicate with a perfusion tube arranged in the proximal end. The perfusion tube extends to the handle device and is communicated with an extension tube connected to the handle device for external connection to a perfusion pump.

12. The inflorescence-shaped electrophysiological mapping catheter device according to claim 10, wherein, The distal end has a second lumen for the wires of the electrodes to pass through.

13. The inflorescence-shaped electrophysiological mapping catheter device according to claim 10, characterized in that, The distal end has a third lumen for the adjustment wire to pass through.

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