An occluder for aortic dissection rupture

Abstract

The present application discloses an occluder for aortic dissection rupture, comprising: a clamping body, the clamping bodies are at least arranged in two opposite positions, and the clamping bodies are arranged to have magnetism or are provided with magnetic components; a connecting body, the connecting body connects the two opposite clamping bodies; wherein, after clamping the rupture position, the clamping bodies attract each other and tightly fit the inner membrane of the dissection and the rupture through the magnetic force of the magnetic components or the clamping bodies themselves, so as to achieve closure of the rupture. The present application provides a device specifically for closing ruptures to treat dissections, which solves the problems of high difficulty in treating dissection ruptures, limited closure effect and residual shunt, and mainly the occluder is arranged to have magnetism or be provided with magnetic components, and can automatically clamp the false lumen to close the rupture by utilizing the magnetic attraction of the magnetic force.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an occluder for aortic dissection rupture. Background Art

[0002] Aortic dissection (AD) is a serious cardiovascular disease. Aortic dissection rupture refers to the blood in the aorta cavity entering the aortic media from the tear in the aortic intima, causing the intima and media to separate, expand along the long axis of the aorta, and form a state of separation between the true and false cavities of the aortic wall.

[0003] After transluminal aortic repair (TEVAR) of aortic dissection, the incidence of post-dissection thoracoabdominal aortic aneurysm is high, among which the residual distal rupture is the main reason for the persistent blood flow in the false lumen. The treatment of aortic dissection is a complex process involving a variety of different treatment strategies and techniques. Currently, there is no treatment plan specifically for the dissection rupture. Existing treatment methods also have problems and challenges such as complex operation, blocking branch vessels affecting other organs, spinal cord ischemia, incomplete closure of the rupture, residual leakage, and persistent expansion of the false lumen.

[0004] Therefore, there is an urgent need to provide an occluder for aortic dissection rupture to solve the above technical problems. Summary of the invention

[0005] The present application provides an occluder for aortic dissection rupture, which can solve the problems of high difficulty in treating aortic dissection rupture, limited occlusion effect and residual shunt.

[0006] According to some embodiments, there is provided an occluder for aortic dissection rupture, comprising: a clamping body, wherein the clamping bodies are arranged in at least two opposite positions and are arranged to be magnetic or to have a magnetic component; and a connecting body, wherein the connecting body connects the two opposite clamping bodies; wherein after the clamping bodies clamp the rupture position, the magnetic components or the magnetic force of the clamping bodies themselves attract each other and tightly adhere to the inner membrane of the dissection and the rupture, thereby achieving closure of the rupture.

[0007] By adopting the above-mentioned technical scheme, a magnetic material or a magnetic component is provided on the clamping body. When the occluder is implanted at the location of the dissecting inner membrane and the rupture, the disk surfaces of the two clamping bodies are attracted to each other and tightly fit the dissecting inner membrane and the rupture location through the magnetic component or the magnetic force of the clamping body itself, thereby achieving occlusion of the rupture. The occluder of this structure adopts the magnetic clamping method to adapt to ruptures of various shapes and positions, and can occlude ruptures of non-visceral artery origin in the visceral artery area, avoid visceral artery blood supply reconstruction, greatly simplify the surgical operation, and reduce surgical risks.

[0008] Preferably, the magnetic component can be fixed to the clamping body by sewing, bonding or interlacing.

[0009] Preferably, the material of the magnetic component can be set to be a soft magnetic composite material or a degradable magnetic material or a magnetic iron or iron alloy material.

[0010] Preferably, the shape of the magnetic component can be set to be a flexible composite membrane or a flexible wire or a rigid strip.

[0011] A preferred embodiment is that the occluder can be configured as a woven double-disc structure, an umbrella-shaped structure, or a double-diaphragm structure; when the magnetic component is configured as a flexible composite diaphragm, the flexible composite diaphragm can be sutured or bonded to the skeleton of the woven double-disc structure; when the magnetic component is configured as a flexible silk thread, the flexible silk thread can be wound around the edge of the woven double-disc structure; when the magnetic component is configured as a rigid strip, the rigid strip can form an umbrella skeleton of the umbrella-shaped structure.

[0012] Preferably, the occluder further comprises a conveying component, and the conveying component can control the magnetic component to eliminate the magnetic attraction force or convert the magnetic attraction force into a repulsive force, so that the mutually attracted clamping bodies are automatically separated.

[0013] A preferred embodiment is that the conveying component includes a conveying rod, the first end of which is connected to the clamping body at the proximal end, and the first end of the conveying rod is wound with a coil, which surrounds the magnetic component on the clamping body at the proximal end; the second end of the conveying rod is provided with a control power supply, and the control power supply can control the coil to cut off power to eliminate the magnetic attraction or convert the magnetic attraction into a repulsive force.

[0014] Preferably, the magnetic component is configured to be columnar, and the coil surrounds the outer circumference of the magnetic component.

[0015] Preferably, the magnetic component is arranged on the opposite side of the clamping body, and the magnetic component is placed in a position that allows magnetic attraction.

[0016] Preferably, the connector is configured to be telescopically deformable.

[0017] Beneficial effects:

[0018] The present application provides an occluder for aortic dissection rupture. By arranging a magnetic body or a magnetic component on the clamping body, when sealing the aortic dissection rupture, the clamping body clamps the rupture position and the magnetic attraction makes the disk surfaces of the two relative clamping bodies closely fit the dissection inner membrane and the rupture position, thereby achieving the closure of the rupture. By adopting the magnetic suction automatic clamping method, there is no need for redundant structure to ensure the clamping ability, the clamping is firm, the risk of falling off can be avoided, and the surgical operation is simplified. It is simple and effective, and the magnetic suction clamping is airtight and comprehensive, which can avoid the problem of residual leakage caused by incomplete closure of the rupture, can adapt to the tissue, reduce the risk of bleeding and ensure effective closure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the occluder clamped on the rupture in the embodiment of the present application;

[0021] Figure 2 This is a schematic diagram of the structure of the occluder clamping the false lumen in the embodiment of the present application;

[0022] Figure 3 This is a schematic structural diagram of an occluder for aortic dissection rupture in an embodiment of the present application, which is configured as a braided double-disc structure;

[0023] Figure 4 This is a schematic structural diagram of an occluder for aortic dissection rupture in an embodiment of the present application, which is configured as an umbrella-shaped structure;

[0024] Figure 5 This is a schematic structural diagram of an occluder for aortic dissection rupture in an embodiment of the present application, which is configured as a double-diaphragm structure;

[0025] Figure 6 This is a schematic diagram of the structure in which the magnetic component in the embodiment of the present application is configured as a flexible composite diaphragm;

[0026] Figure 7 This is a schematic diagram of the structure in which the magnetic component in the embodiment of the present application is configured as a flexible wire;

[0027] Figure 8 This is a schematic diagram of the structure in which the magnetic component in the embodiment of the present application is configured as a rigid strip;

[0028] Fig. 9This is a schematic structural diagram of the magnetic component in the embodiment of the present application, which is a flexible composite membrane and is sewn or bonded into the occluder frame;

[0029] Fig.10 This is a schematic diagram of the structure in which the magnetic component is a flexible wire wound around the edge of the occluder in an embodiment of the present application;

[0030] Fig.11 This is a schematic diagram of the structure in which the conveying component is used to control the magnetic component to attract each other so that the two clamping bodies of the occluder are attracted to each other and clamped to the inner membrane of the interlayer in the embodiment of the present application;

[0031] Fig.12 This is a schematic structural diagram of the embodiment of the present application in which the conveying component is used to control the repulsion of the magnetic component so that the two clamping bodies of the occluder repel each other.

[0032] Figure numerals: 10, occluder; 11, clamping body; 12, connector; 13, connecting piece; 20, magnetic component; 30, conveying component; 31, conveying rod; 32, coil; 33, control power supply; 40, true cavity; 50, false cavity; 51, interlayer inner membrane; 52, false cavity outer wall; 60, rupture. DETAILED DESCRIPTION

[0033] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in the embodiments of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not be construed as any limitation, and the various embodiments can be combined with each other and quoted from each other without contradiction.

[0034] The distal end and the proximal end in the present application are relative to the operator. The end of the occluder closer to the operator is the proximal end, and the end farther from the operator is the distal end.

[0035] The embodiment of the present application provides an occluder for aortic dissection rupture, which can solve the problems of high difficulty in treating aortic dissection rupture, limited occlusion effect and residual shunt, etc. The occluder can also close the false lumen to achieve the cure of the dissection.

[0036] The following is a detailed description of an occluder for aortic dissection provided in this embodiment in conjunction with the accompanying drawings. Figure 1 and Figure 2 As shown, the occluder 10 is used to clamp on the breach 60 or clamp the false cavity 50, as shown in FIG. Figure 1As shown, the occluder 10 in this embodiment is clamped and fixed on the breach 60 of the interlayer inner membrane 51 by the magnetic force of the clamping body 11 itself. Specifically, one clamping body 11 of the occluder 10 is located in the false cavity 50, and one clamping body 11 is located in the true cavity 40. The waist of the occluder 10 is located at the breach 60, and the occluder 10 is clamped and fixed on the breach 60 by the magnetic force of the clamping body 11; Figure 2 As shown, the occluder 10 in this embodiment is clamped and fixed in the clamping false cavity 50 by the magnetic force of the clamping body 11 itself. Specifically, one clamping body 11 of the occluder 10 is located outside the false cavity 50, and the other clamping body 11 is located in the true cavity 40. The occluder 10 is clamped and fixed by the magnetic force of the clamping body 11, and the outer wall 52 of the false cavity and the interlayer inner membrane 51 are directly clamped and closed. When used in this scenario, it is necessary to first use a puncture system to puncture the outer wall 52 of the false cavity and the interlayer inner membrane 51, and then facilitate the release of the occluder 10. The puncture system is a relatively mature technology in this field and will not be described in detail here.

[0037] Please refer to Figure 1-Figure 3 As shown, the occluder 10 in this embodiment includes a clamping body 11 and a connecting body 12. The clamping bodies 11 are provided with at least two opposite ones and connected by the connecting body 12. The clamping body 11 is provided with magnetic properties or a magnetic component 20 (such as Fig. 9 , Fig.10 As shown); after the clamping body 11 clamps the breach 60, the magnetic component 20 or the magnetic force of the clamping body 11 attracts each other and tightly fits the interlayer inner membrane 51 and the breach 60, thereby sealing the breach 60.

[0038] In this embodiment, a magnetic component 20 is provided on the clamping body 11 of the occluder 10, or the clamping body 11 is provided with magnetism. When the clamping body 11 blocks the rupture 60 of the aortic dissection, the disks of the two clamping bodies 11 are attracted to each other by the magnetic component 20 or the magnetic force of the clamping body 11 itself, so that the position of the rupture 60 on the dissection inner membrane 51 can be closely attached, thereby achieving the blocking of the rupture 60. In the embodiment of the present application, by adopting the magnetic suction method, no redundant structure is required to ensure the clamping ability, and the clamping is firm, which can avoid the risk of falling off, can adapt to various complex rupture 60 position structures, and can even directly close the false lumen 50 to achieve the healing of the dissection. At the same time, the surgical operation is simplified, and the tight blocking of the occluder 10 can be achieved without complex and cumbersome operations. Moreover, the magnetic suction clamping method can adapt to ruptures 60 of various shapes and positions, and can block ruptures of non-visceral artery origin in the visceral artery area, which can avoid visceral artery blood supply reconstruction and reduce surgical risks.

[0039] Please refer to Figure 3-Figure 5As shown, in this embodiment, it should be noted that the clamping body 11 is provided with two, and the opposite surfaces of the clamping body 11 are respectively the inner disk surface, and the surface away from the inner disk surface is respectively the outer disk surface, that is, in the process of blocking, the disk surface used to adhere to the aortic wall surface is respectively the inner disk surface, and the disk surface away from the aortic wall surface is respectively the outer disk surface; the inner disk surfaces of the two clamping bodies 11 are connected by a connector 12 arranged between the two to form an integral structure, which can be an integral structure formed in one piece, or a fixed connection structure. If the connector 12 is a hollow columnar structure, the inner disk surfaces of the two clamping bodies 11 extend toward each other to form the connector 12, so that the two clamping bodies 11 and the connector 12 are an integral structure formed in one piece, such as the clamping body 11 and the connector 12 are woven by metal wire or cut by a metal mesh tube to form an integral grid structure. The connector 12 can be an independent columnar structure, fixedly connected with the clamping body 11 by welding, bonding, buckling and other processes or detachably fixedly connected to form an integral fixed connection structure or a detachable fixed connection structure, which is not specifically limited in this embodiment. In one example, the connector 12 can be further telescopically deformed, thereby being able to adapt to the thickness of the tissue clamped in the middle. The connector 12 can be a woven mesh with a certain degree of telescopic performance.

[0040] In some embodiments, the overall structure of the occluder 10 can be set to a woven double-disc structure or an umbrella-shaped structure or a double-diaphragm structure. In other words, the inner disk surfaces of the two clamping bodies 11 are respectively a plane structure or a curved surface structure, and the two structures can be the same or different. Specifically, the plane structure means that the inner disk surface is a plane shape, and the curved surface structure means that the inner disk surface of the clamping body 11 is at least one of a conical surface and an arc surface or a combination thereof; the plane structure and the curved surface structure are relatively regular disc structures.

[0041] Please refer to Figure 3 As shown, when the overall structure of the occluder 10 is set to a braided double-disc structure, the cross-section is an I-shaped, the clamping body 11 is disc-shaped, and the clamping body 11 can be made of high-elastic nickel-titanium alloy wire through a braiding machine to weave a braided mesh with a certain diameter and density, and the mesh is shaped by heat treatment to form a skeleton of the disc-shaped structure. It can be understood that the clamping body 11 is a flat planar structure, that is, the clamping body 11 is a double-layer planar disc-shaped structure woven by metal wires. This structure is the most basic structure of the present application. Specifically, the clamping body 11 can be a flat disc mesh structure formed by weaving 18-288 metal wires with the same or different wire diameters. When the mesh holes in the mesh structure are small, or even when there are no obvious mesh holes when the metal wires are arranged, the clamping body 11 can be directly used to basically or completely block the rupture 60 of the aortic dissection (such as Figure 1As shown), no other auxiliary blocking components need to be added; but when the mesh is relatively large, at least one layer of flow-blocking membrane for sealing the rupture 60 of the aortic dissection needs to be set on the clamping body 11, or at least one layer of flow-blocking membrane is set in the inner cavity of the clamping body 11, and the flow-blocking membrane is a sheet structure. Specifically, at least one layer of flow-blocking membrane is attached to the outer wall surface of the clamping body 11; or at least one layer of flow-blocking membrane is set in the inner cavity of the clamping body 11, and the flow-blocking membrane set in the inner cavity can be directly attached to the inner wall surface, or it can be set in the middle of the inner cavity. At this time, at least one layer of flow-blocking membrane is set on the outer wall surface or in the inner cavity of the clamping body 11, and the flow-blocking membrane can occupy the entire disk surface horizontally, or it can be set in a partial area on the clamping body 11, but this part of the area is generally located near the rupture 60 of the aortic dissection, and the flow-blocking membrane can seal the rupture 60 of the aortic dissection. The main function of the flow-blocking membrane is blocking, so the membrane structure made of non-permeable material in this embodiment can be sewn on the clamping body 11. The material of the flow-blocking membrane can be selected from polyethylene terephthalate, expanded polytetrafluoroethylene material, polyurethane material or other high molecular polymer materials.

[0042] Please refer to Figure 4 As shown, when the overall structure of the occluder 10 is set to an umbrella-shaped structure, the clamping body 11 is set to an umbrella shape, and the concave surfaces of the two clamping bodies 11 are arranged oppositely, the concave surface of the clamping body 11 is the inner disk surface, and the protruding surface of the clamping body 11 is the outer disk surface. During the occlusion process, the concave surface of the clamping body 11 is attached to the aortic wall. It can be understood that the inner disk surfaces of the two clamping bodies 11 are respectively curved surface structures, and the curved surface structure means that the inner disk surface of the clamping body 11 is a conical surface, that is, a concave surface.

[0043] Please refer to Figure 5 As shown, when the overall structure of the occluder 10 is set to a double diaphragm structure, the clamping body 11 is set to a diaphragm, and the two diaphragms are connected by a connecting body 12. At this time, the inner disk surface of the clamping body 11 is also a curved surface structure. The curved surface structure means that the inner disk surface of the clamping body 11 is an arc surface, and the entire inner disk surface of the clamping body 11 is attached to the wall of the aorta to achieve occlusion of the rupture 60.

[0044] Please refer to Figure 6-Figure 10 As shown, in this embodiment, it is also necessary to explain that when the clamping body 11 is set to have magnetism, the clamping body 11 can be made of a degradable material with magnetism, such as a soft magnetic composite material or a degradable magnetic material or a magnetic iron or iron alloy material. When the clamping body 11 is set to have a magnetic component 20, the magnetic component 20 and the clamping body 11 can be combined in a variety of ways. The magnetic component 20 can be fixed to the clamping body 11 by sewing, gluing or interlacing, and the magnetic component 20 can be set as a flexible composite membrane (such as Figure 6 as shown) or flexible wire (as Figure 7 as shown) or rigid strips (as Figure 8 as shown).

[0045] Please refer to Figure 6 and Fig. 9 As shown, the occluder 10 is a woven double-disc structure. When the magnetic component 20 is set to a flexible composite diaphragm, the flexible composite diaphragm can be fixed in the skeleton of the clamping body 11 of the occluder 10 by suturing or bonding, so that the clamping body 11 has magnetic force, and the two relatively arranged clamping bodies 11 attract each other and have clamping force.

[0046] Please refer to Figure 7 and Fig.10 As shown, the occluder 10 is a braided double-disc structure. When the magnetic component 20 is set as a flexible silk thread, the flexible silk thread can be wrapped around the edge of the clamping body 11 of the occluder 10, so that the clamping body 11 has magnetic force, and the two oppositely arranged clamping bodies 11 attract each other and have clamping force.

[0047] Please refer to Figure 4 and Figure 8 As shown, the occluder 10 is an umbrella-shaped structure. When the magnetic component 20 is configured as a rigid strip, the rigid strip can form an umbrella skeleton of the clamping body 11 of the occluder 10 .

[0048] The specific configuration of the magnetic component 20 is not specifically limited in this embodiment.

[0049] In some embodiments, the material of the magnetic component 20 can be set to a soft magnetic composite material or a degradable magnetic material or a magnetic iron or iron alloy material. Among them, the soft magnetic composite material can be prepared by using high-purity iron powder as the main raw material, insulating the surface of the powder particles, pressing, chemical reaction, vapor deposition and other methods, and then heat treating. The degradable magnetic material can be prepared by magnetizing iron or its oxidized particles and degradable polymer materials.

[0050] Please refer to Figure 3 , Fig.11 as well as Fig.12 As shown, in this embodiment, it should also be noted that the magnetism of the magnetic component 20 can be temporary, and the magnetism of the occluder 10 disappears after a certain period of time after implantation. For example, if the magnetic component 20 is made of iron or a degradable polymer material, the magnetism of the occluder 10 disappears as it degrades; or the magnetism of the occluder 10 can be eliminated by an alternating magnetic field or the like.

[0051] In one practicable manner, the occluder 10 is demagnetized by means of an alternating magnetic field. Specifically, the occluder 10 further comprises a conveying component 30, which can control the magnetic component 20 to eliminate the magnetic attraction or convert the magnetic attraction into a repulsive force, so that the mutually attracted clamping bodies 11 are automatically separated. The conveying component 30 comprises a conveying rod 31, the first end of which can be detachably connected to the magnetic component 20 on the proximal clamping body 11, and a coil 32 is also wound on the first end of the conveying rod 31. Before the occluder 10 is completely released, the coil 32 also surrounds the magnetic component 20 on the proximal clamping body 11; the second end of the conveying rod 31 is provided with a control power supply 33, which can be connected to the coil 32 through an electric wire to form a closed loop, and the control power supply 33 can provide alternating current, and can control the coil 32 to be powered off to eliminate the magnetic attraction or convert the magnetic attraction into a repulsive force. Among them, the first end of the delivery rod 31 and the magnetic component 20 of the clamping body 11 can be detachably connected by means of threaded connection, clip connection or snap fit. When the delivery rod 31 implants the occluder 10 at the corresponding position and the clamping position of the clamping body 11 is appropriate, the delivery rod 31 can be disassembled from the magnetic component 20, and then the delivery rod 31 is taken out, and the occluder 10 clamps the rupture 60 on the interlayer inner membrane 51 or directly clamps the outer wall 52 of the false cavity and the interlayer inner membrane 51 to close.

[0052] During the occlusion process, when the occluder 10 is implanted in the wrong position or has a poor effect, the direction of the current in the control power supply 33 in the delivery component 30 can be adjusted, and then the direction of the current in the coil 32 can be adjusted to change the direction of the magnetic field on the proximal clamping body 11, so that the magnetic components 20 on the two clamping bodies 11 change from attracting each other to repelling each other, and then the disks of the two attracted clamping bodies 11 swell and automatically separate (such as Fig.12 As shown), the occluder 10 can be relocated or recovered and replaced.

[0053] In one example, the magnetic component 20 is configured to be columnar and is disposed on opposite sides of the two clamping bodies 11, and the magnetic component 20 is placed in a magnetically attractive position, and the coil 32 also surrounds the columnar magnetic component 20 on the clamping body 11. By surrounding the columnar magnetic component 20 with the coil 32, it is convenient to eliminate the magnetism of the occluder 10 or change the magnetic force by means of an alternating magnetic field or the like.

[0054] The implementation principle of this embodiment is as follows: before the occluder 10 is completely released, the coil 32 surrounds the magnetic component 20 on the proximal clamping body 11. When the occluder 10 is released, the magnetic components 20 on the two clamping bodies 11 attract each other and clamp the breach 60 on the interlayer inner membrane 51 or directly clamp the false cavity outer wall 52 and the interlayer inner membrane 51 together to seal. If the occluder 10 is not placed in an appropriate position, the current direction of the control power supply 33 in the conveying component 30 can be adjusted to change the magnetic field direction of the magnetic component 20 on the proximal clamping body 11 from attraction to repulsion, so that the two mutually attracted clamping bodies 11 automatically separate. After the position is readjusted, the current direction of the power supply 33 is controlled again to change the magnetic field direction of the magnetic component 20 on the proximal clamping body 11 from repulsion to attraction, and then the two clamping bodies 11 attract each other again and clamp the breach 60 on the interlayer inner membrane 51 or directly clamp the false cavity outer wall 52 and the interlayer inner membrane 51 together to seal.

[0055] Therefore, in this embodiment, by adding a magnetic component 20 to the occluder 10, the occluder 10 can be tightly sealed and firmly clamped without complicated and tedious operations. By adopting the automatic clamping method of the magnet, the magnetic clamping can adapt to the ruptures 60 of various shapes and positions, and can block the ruptures of non-visceral artery origin in the visceral artery area, avoid visceral artery blood supply reconstruction, greatly simplify the surgical operation, and reduce the surgical risk. At the same time, it can also be accurately closed to avoid blockage of branch blood vessels, greatly reduce the coverage rate of the healthy aorta, and reduce the risk of spinal cord ischemia. When the occlusion position is not suitable, the magnetic attraction can be changed to change the magnetic attraction of the occluder 10 into a repulsive force, thereby realizing recovery or re-release.

[0056] It should be understood that the above specific embodiments of the present application are only used to illustrate or explain the principles of the present application, and do not constitute a limitation to the present application. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present application should be included in the protection scope of the present application. In addition, the claims attached to the present application are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims or the equivalent forms of such scope and boundaries.

Claims

1. An occluder for aortic dissection, characterized in that: include: A clamping body (11), wherein the clamping bodies (11) are arranged in at least two opposite positions, and the clamping bodies (11) are provided with a magnetic component (20); A connecting body (12), wherein the connecting body (12) connects the two opposite clamping bodies (11); After the clamping body (11) clamps the breach (60), the magnetic component (20) attracts and closely fits the interlayer inner membrane (51) and the breach (60), thereby sealing the breach (60); The occluder (10) further comprises a conveying component (30), wherein the conveying component (30) controls the magnetic component (20) to eliminate the magnetic attraction force or to convert the magnetic attraction force into a repulsive force, so that the mutually attracted clamping bodies (11) are automatically separated; The conveying component (30) comprises a conveying rod (31), the first end of the conveying rod (31) is connected to the clamping body (11) at the proximal end, and a coil (32) is wound around the first end of the conveying rod (31), and the coil (32) surrounds the magnetic component (20) on the clamping body (11) at the proximal end; the second end of the conveying rod (31) is provided with a control power supply (33), and the control power supply (33) controls the coil (32) to cut off power to eliminate the magnetic attraction or convert the magnetic attraction into a repulsive force.

2. The occluder for aortic dissection according to claim 1, characterized in that: The magnetic component (20) is fixed to the clamping body (11) by sewing, bonding or interlacing.

3. The occluder for aortic dissection according to claim 1, characterized in that: The material of the magnetic component (20) is set to be a soft magnetic composite material or a degraded magnetic material or a magnetic iron or iron alloy material.

4. The occluder for aortic dissection according to claim 1, characterized in that: The magnetic component (20) is configured in a columnar shape, and the coil (32) surrounds the outer circumference of the magnetic component (20).

5. The occluder for aortic dissection according to claim 4, characterized in that: The magnetic component (20) is arranged on the opposite side of the clamping body (11), and the placement position of the magnetic component (20) is magnetically attractive.

6. The occluder for aortic dissection according to claim 1, characterized in that: The connector (12) is configured to be telescopically deformable.

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