Artificial valve anchoring device, delivery system and transcatheter heart valve replacement system

Abstract

The utility model relates to an artificial valve anchoring device, a delivery system and a transcatheter heart valve replacement system, the device can radially collapse and expand between a radial collapse structure and a radial expansion structure, and the device comprises a skirt edge part, a main body part and a plurality of connecting pieces; the skirt edge part extends outwards in the radial direction in an umbrella disc shape, and the small-diameter end of the skirt edge part is connected with the main body part; the main body part comprises a plurality of grid units which are connected with one another; the connecting piece is arranged at the far end of the skirt edge part and used for being connected with a conveying device. At least part of the section of the connecting piece is configured to be an elastic deformation section, the elastic deformation section can be in a straightened state in a conveying state and gradually recover to be in a preset nonlinear shape in a release state, and gradual release of the artificial valve anchoring device can be achieved through gradual deformation of the elastic deformation section.

Description

Technical Field

[0001] This utility model relates to the field of medical devices for cardiac surgery, and in particular to an artificial valve anchoring device, a delivery system, and a transcatheter heart valve replacement system. Background Technology

[0002] Heart valve disease includes valvular disorders of the mitral, tricuspid, aortic, and pulmonary valves. These disorders affect normal blood flow, leading to abnormal heart function, causing pain, and even endangering life. Currently, one treatment for valvular regurgitation is transcatheter valve replacement (TCVPR). TCVPR is a novel, minimally invasive treatment that uses a valve delivery system to deliver an artificial valve to the location of the native mitral valve, replacing its function.

[0003] In some existing solutions, a pedicled stent can be implanted first as an anchoring structure for the artificial valve, and then the artificial valve can be implanted within this structure. Alternatively, a capture ring can be implanted first, followed by the pedicled stent and the artificial valve. Existing pedicled stents typically have several connectors at their distal ends for connection to the distal end of the delivery system.

[0004] However, one existing technical problem is that the connectors of the umbrella-shaped stent often exhibit a sudden release characteristic during the release process, that is, they suddenly spring open in the final stage. This sudden release may cause the umbrella-shaped stent to shift, and may even cause other potential risks such as myocardial damage.

[0005] Therefore, how to achieve the controllable and slow release of the aforementioned umbrella-shaped support, ensuring that it can be accurately placed in the optimal position, is a technical problem that urgently needs to be solved. Utility Model Content

[0006] This utility model discloses an artificial valve anchoring device, a delivery system, and a valve replacement system, aiming to solve the technical problems existing in the prior art.

[0007] The present invention adopts the following technical solution:

[0008] On the one hand, this utility model embodiment provides an artificial valve anchoring device, which is capable of radially collapsing and expanding between a radially collapsed structure and a radially expanded structure, and includes a skirt portion, a main body portion and multiple connecting members;

[0009] The skirt hem extends radially outward in an umbrella-shaped pattern, with the smaller diameter end of the skirt hem connected to the main body.

[0010] The main body consists of several interconnected grid cells;

[0011] The connector is located at the far end of the skirt and is used to connect to the conveying device;

[0012] At least a portion of the connector is configured as an elastically deformable section, which can be straightened in the delivery state and gradually return to a preset non-linear shape in the release state. Through the gradual deformation of the elastically deformable section, the artificial valve anchoring device can be gradually released.

[0013] As a preferred technical solution, in the non-linear shape structure of the elastic deformation section, the elastic deformation section includes multiple bending units, and the multiple bending units are continuously arranged along the axial direction of the connector.

[0014] As a preferred technical solution, the two opposite sides of each bending unit and the two adjacent bending units are set at a first preset angle, which is configured as an acute angle, a right angle or an obtuse angle.

[0015] As a preferred technical solution, the plane where the bending unit is located is set at a second preset angle with the radial plane where the far end of the skirt is located. The radial plane is perpendicular to the axis of the artificial valve anchoring device, and the second preset angle is configured as an acute angle or a right angle.

[0016] As a preferred technical solution, the extension direction of the bending unit is configured with an angle of 60° to 90° between it and the radial plane where the far end of the skirt is located.

[0017] As a preferred technical solution, the plane where the bending unit is located coincides with the extension plane of the skirt.

[0018] As a preferred technical solution, the bending unit extends axially along the skirt edge extension plane or extends obliquely circumferentially along the skirt edge extension plane.

[0019] As a preferred technical solution, the distal end of the connector is further provided with a transverse connecting part, which is perpendicular to the radial direction of the skirt and has a smooth outer surface.

[0020] As a preferred technical solution, at least the elastic deformation segment includes a shape memory material.

[0021] In a second aspect, the present invention provides a delivery system, including an artificial valve anchoring device as described in any of the preceding claims, and also including a catheter delivery device;

[0022] The transcatheter delivery device comprises, from distal to proximal, a capsule assembly, a catheter assembly, and a control assembly. The capsule assembly is used to connect to the artificial valve anchoring device and can radially constrain the artificial valve anchoring device during delivery and release the artificial valve anchoring device after reaching the target position.

[0023] Thirdly, this utility model also provides a transcatheter heart valve replacement system, including the artificial valve anchoring device as described in any of the preceding claims, and further including an artificial valve and a catching ring;

[0024] The catching ring is spiral-shaped and can be coiled around the chordae tendineae and connected to or abut against the artificial valve anchoring device;

[0025] The artificial valve can be interference-fitted with the main body of the artificial valve anchoring device.

[0026] One embodiment of the above-described utility model has the following advantages or beneficial effects:

[0027] This invention provides an artificial valve anchoring device. By incorporating a connector with an elastic deformation section at its skirt edge, the device achieves gradual deployment during release, avoiding the risks of device displacement or myocardial damage that may occur when the skirt edge suddenly springs open in traditional structures. Furthermore, this gradual release mechanism allows doctors to better control the release process and precisely position the artificial valve anchoring device, improving the safety and success rate of the surgery.

[0028] Furthermore, this utility model also provides two different implementation schemes for the connector, which are intended to be suitable for different clinical needs. One scheme can avoid direct contact with the atrial wall and reduce disturbance to blood flow, while the other scheme provides a more stable anchoring effect through close contact with the atrial wall.

[0029] Furthermore, this invention also provides a delivery system and a transcatheter heart valve replacement system. The delivery system uses a transcatheter delivery device to deliver the artificial valve anchoring device to the target location. Its distal capsule assembly can radially constrain and controllably release the anchoring device. The transcatheter heart valve replacement system is a complete treatment solution that combines the artificial valve anchoring device with the artificial valve and a spiral-shaped retrieval ring. The retrieval ring can be coiled around the chordae tendineae and connected to the anchoring device. The artificial valve is fixed by an interference fit with the main body of the anchoring device, thus forming a synergistic system that can complete transcatheter valve replacement surgery while ensuring the success rate and safety of the surgery. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below, forming part of this utility model. The illustrative embodiments of this utility model and their descriptions explain this utility model and do not constitute an improper limitation of this utility model. In the accompanying drawings:

[0031] Figure 1This is a schematic diagram of the structure of the artificial valve anchoring device in one embodiment of this utility model;

[0032] Figure 2 This is a partial enlarged view of the connector in one embodiment of this utility model;

[0033] Figure 3 This is a schematic diagram of the artificial valve anchoring device in another embodiment of Embodiment 1 of this utility model;

[0034] Figure 4 This is a schematic diagram of the artificial valve anchoring device during loading in one embodiment of Embodiment 2 of this utility model;

[0035] Figure 5 This is a schematic diagram of the artificial valve anchoring device during the release process in one embodiment of Embodiment 2 of this utility model;

[0036] Figure 6 This is a schematic diagram of the artificial valve anchoring device before complete release in one embodiment of Embodiment 2 of this utility model.

[0037] Explanation of reference numerals in the attached figures:

[0038] Artificial valve anchoring device 10, main body 11, skirt 12, sealing membrane 13, connector 14, bending unit 141, transverse connecting part 142, distal capsule 21, loading part 22, outer tube 23, control handle 24. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. In the description of this utility model, it should be noted that the term "or" is generally used to include the meaning of "and / or," unless otherwise expressly stated otherwise.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a magnetic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. The term "proximal end" refers to the end closer to the operator along the length of the conveying system, and the term "distal end" refers to the end farther from the operator along the length of the conveying system.

[0041] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0042] Example 1

[0043] This invention provides an artificial valve anchoring device 10, which can radially collapse during delivery and radially expand after release. It is suitable for use within the mitral or tricuspid valve and is preferably used in conjunction with a retrieval ring. (Reference) Figure 1 — Figure 3 The distal end of the artificial valve anchoring device 10 is the blood inflow end, corresponding to the atrial side, and the proximal end is the blood outflow end, corresponding to the valve side. From the distal end to the proximal end, there are sequentially arranged a connector 14, a skirt portion 12, and a main body portion 11. The skirt portion 12 extends radially outward in an umbrella-shaped manner. The small diameter end of the skirt portion 12 is connected to the main body portion 11. The main body portion 11 includes several interconnected grid units. Multiple connectors 14 are arranged circumferentially along the skirt portion 12 for connecting to the delivery device.

[0044] In some embodiments, the surface of the artificial valve anchoring device 10 is also covered with a sealing membrane 13 to reduce paravalvular leakage and accelerate endothelialization.

[0045] In some embodiments, the skirt portion 12 includes several diamond-shaped mesh supports and elastic connectors 14. One end of the diamond-shaped mesh support is connected to the main body portion 11 through an elastic connection structure, and the other end can be releasably connected to the corresponding conveying device during conveying. After release, the skirt portion 12 can expand radially. The skirt portion 12 is preferably larger than the diameter of the valve opening to ensure complete coverage of the valve opening, thereby preventing perivalvular leakage.

[0046] In some embodiments, the main body 11 includes one or more rows of polygonal grid structures, and adjacent grid structures are connected by elastic wave rods or nodes. The polygonal grid is preferably rhomboid, but pentagonal, hexagonal or other units that can form a closed shape can also be selected.

[0047] In some embodiments, the main body 11 has a cylindrical structure, with its outer side adapted to the catching ring and its inner side adapted to the artificial valve. A standard circular channel is defined in the middle of the inner side of the main body 11. In this case, no matter what irregular shape the cross-section of the patient's original valve annulus is, it can be adjusted to a standard circle under the joint action of the main body 11 and the catching ring, so that the artificial valve can be accurately released and work stably in subsequent operations, and ensure that the artificial valve can be completely adapted to the shape of the valve annulus to avoid regurgitation.

[0048] In some embodiments, the grid structure of the main body 11 and the skirt 12 may refer to the structure of the umbrella-shaped stent or artificial valve stent in the prior art. The specific structure is no longer limited and is not shown in the drawings.

[0049] In some embodiments, multiple connectors 14 are evenly arranged circumferentially along the skirt portion 12, optionally 2-4. Each connector 14 has an elastic deformation segment, which can be a partial segment of the connector 14 or a segment covering the entire connector 14. In the delivery state, the connector 14 is in a straightened state. As the delivery device gradually releases, the elastic deformation segment in the connector 14 gradually returns to a pre-set non-linear shape. Through the gradual deformation of the elastic deformation segment, the artificial valve anchoring device 10 can achieve a slow and controllable progressive release, avoiding the risks that may be caused by the device suddenly popping open, and facilitating the doctor's precise control of the device's positioning.

[0050] In some embodiments, the connector 14 is thermoformed from a shape memory material. Because the shape memory material has superelasticity, shape memory effect and good biocompatibility, the connector 14 can be straightened and fixed in the conveying device during the conveying process, and can automatically return to the preset shape during the release process.

[0051] In some embodiments, the connector 14 may be made of nickel-titanium alloy, which has good biocompatibility. The austenitic phase transformation temperature of the nickel-titanium alloy can be precisely controlled by adjusting the composition, so that it can recover the preset shape at body temperature and maintain stable superelasticity, thereby ensuring that the connector 14 can work stably in the human body.

[0052] In some embodiments, when the elastically deformed segment recovers to a preset non-linear shape, its structure includes a plurality of bending units 141, such as... Figure 2Multiple bending units 141 are continuously arranged along the axial direction of the connector 14.

[0053] In some embodiments, the bending unit 141 may be configured as a wave-shaped, zig-shaped, or S-shaped shape, and each bending unit 141 includes at least one turning point. Adjacent bending units 141 are also connected by bending points. The line segment between adjacent turning points may be a straight line segment or a curved line segment. By adjusting the included angle at the turning point and the distance between adjacent turning points, the overall shape, size, and elasticity of the bending unit 141 can be controlled.

[0054] In some embodiments, when straight segments are used for connection, the lengths of the straight segments between adjacent turning points can be equal or unequal. By adjusting the length ratio of the straight segments, different mechanical properties can be achieved to meet different clinical needs. For example, when a longer straight segment is provided in the bending unit 141, a larger deformation space can be provided. When a shorter straight segment is provided on both sides of the bending unit 141, stronger support stiffness can be provided.

[0055] In some embodiments, the turning point of the bending unit 141 can be designed as a circular arc transition to avoid stress concentration. The radius of the circular arc transition can be adjusted as needed, and is not specifically limited here.

[0056] In some embodiments, the bending points between opposite sides of each bending unit 141, as well as the bending points between two adjacent bending units 141, are all set at a first preset angle. The first preset angle can be configured as an acute angle, a right angle, or an obtuse angle according to clinical needs. Specifically, when the first preset angle is configured as an acute angle, the connector 14 has a larger deformation space and a softer supporting force; when the first preset angle is configured as a right angle, the connector 14 can provide a stable and balanced supporting effect; when the first preset angle is configured as an obtuse angle, the connector 14 can provide stronger supporting stiffness. On the same connector 14, different bending points can choose the same angle to obtain uniform mechanical properties, or different angles can be combined to achieve specific mechanical requirements. By adjusting the first preset angle, the overall stiffness and elastic properties of the connector 14 can be effectively controlled, thereby ensuring that the artificial valve anchoring device 10 can be smoothly deployed during release and provide corresponding supporting force.

[0057] In some embodiments, the distal end of the connector 14 is further provided with a transverse connecting portion 142. The transverse connecting portion 142 and the main body 11 of the connector 14 are made of the same shape memory material and have a T-shaped structure. It is used to connect with the capsule assembly at the distal end of the delivery device. The transverse connecting portion 142 is preferably arranged perpendicular to the radial direction of the skirt portion 12, and the transverse connecting portion 142 has a smooth outer surface to avoid damage to the atrial tissue due to sharp corner contact.

[0058] In some embodiments, the plane containing the bending unit 141 forms a second preset angle with the radial plane containing the distal end of the skirt portion 12. The radial plane containing the distal end of the skirt portion 12 is perpendicular to the axis of the artificial valve anchoring device 10. The second preset angle can be a vertical angle or other angles, allowing the connector 14 to adopt different spatial configurations according to different clinical needs. From another perspective, this spatial configuration of the connector 14 also means that the positional relationship between the transverse connecting portion 142 and the plane containing the bending unit 141 can be more flexible. Taking the transverse connecting portion 142 being perpendicular to the axial direction of the skirt portion 12 as an example, the plane containing the bending unit 141 can be coplanar with the transverse connecting portion 142 or form an angle with the transverse connecting portion 142 at any angle. Those skilled in the art should understand that the transverse connecting portion 142 and the axial direction of the skirt portion 12 can also have other angles, rather than necessarily being perpendicular.

[0059] It should be noted that, since the connector 14 in this embodiment is equipped with a bending unit 141, the connector 141 presents a fold-like state in the axial direction. Therefore, compared with the solution of using a straight connector in the prior art, the connector 14 provided in this embodiment can significantly shorten the actual axial extension length. At this time, no matter how the second preset included angle is set, as long as the connector 14 maintains the bending configuration, it can significantly reduce the space it occupies in the blood flow direction, thereby effectively reducing the disturbance to blood flow and helping to maintain better hemodynamic effects.

[0060] In some embodiments, the extending direction of the bending unit 141 is arranged at an angle with the radial plane containing the distal end of the skirt portion 12, such as... Figure 1 This angle setting allows the connector 14 to further avoid the atrial wall, reduce direct contact with atrial tissue, reduce mechanical stimulation of the atrial wall, and minimize blood flow disturbance caused by the presence of the connector 14.

[0061] In some embodiments, the angle between the extending direction of the bending unit 141 and the radial plane where the distal end of the skirt portion 12 is located is preferably 60° to 90°. Specifically, when the angle is close to 90°, the connector 14 extends almost parallel to the axial direction of the artificial valve anchoring device 10, which can minimize the resistance of the connector 14 to blood flow. When the angle is close to 60°, it can maintain a good anchoring effect and ensure that the connector 14 maintains an appropriate distance from the atrial wall.

[0062] In other embodiments, the plane of the bending unit 141 coincides with the extension plane of the skirt portion 12. When it returns to its original shape, its overall configuration remains in the same plane as the skirt portion 12, allowing the bending unit 141 to unfold as the skirt portion 12 expands radially and form surface contact with the atrial wall after unfolding. Due to the increased contact area, it can provide greater support and a more stable anchoring effect. At the same time, since the bending unit 141 has multiple turning points, it can also follow the natural contour of the atrial wall and the heartbeat to achieve a better fit.

[0063] In some further embodiments, when the bending unit 141 coincides with the extension plane of the skirt portion 12, there can be two different extension methods:

[0064] One type is where the bending unit 141 extends axially along the plane of the skirt portion 12, that is, the overall direction of the bending unit 141 is parallel to the axis of the artificial valve anchoring device 10. In this case, the bending unit 141 can provide corresponding support force in the axial direction to resist the displacement of the device in the axial direction.

[0065] Another type is where the bending unit 141 extends obliquely along the circumferential plane of the skirt edge 12, that is, the overall orientation of the bending unit 141 forms a certain angle with the circumferential direction, such as... Figure 3 By adjusting the tilt angle, the bending unit 141 can better adapt to the anatomical structure of the atrium, while helping to prevent the device from rotating circumferentially, thereby achieving a more comprehensive anchoring effect. The tilt angle of the bending unit 141 is not specifically limited here, and those skilled in the art can adjust it freely according to actual needs.

[0066] In this embodiment, the connector 14 of the artificial valve anchoring device 10 can be loaded into the far end of the delivery device in a straightened state. During release, as the main body 11 and the skirt 12 are slowly released, the connector 14 is gradually exposed, and the main body 11 and the skirt 12 are slowly released. Therefore, the artificial valve anchoring device 10 can be conveniently positioned and placed. After the connector 14 is fully exposed, the connector 14 has not yet returned to the preset shape. Under the body temperature, the connector 14 gradually returns to its shape, and the release is completed.

[0067] Example 2

[0068] This invention provides a delivery system, including an artificial valve anchoring device 10 as described in Embodiment 1, and a transcatheter delivery device. The technical features already included in Embodiment 1 are naturally inherited in this embodiment and will not be described again.

[0069] In some embodiments, the catheter delivery device includes, from distal to proximal, a capsule assembly, a catheter assembly, and a control assembly. The capsule assembly is connected to the artificial valve anchoring device 10 and is able to radially constrain the artificial valve anchoring device 10 during delivery and release the artificial valve anchoring device 10 after reaching the target position. The control assembly is able to perform related operations on the capsule assembly through the catheter assembly to release the artificial valve anchoring device 10.

[0070] like Figure 4 —6. In some embodiments, the capsule assembly includes a distal capsule 21 and a loading member 22. The distal capsule 21 can accommodate and radially limit the compressed artificial valve anchoring device 10. The loading member 22 has a groove for assembling the artificial valve anchoring device 10. The catheter assembly is used to deliver the capsule assembly and the artificial valve anchoring device 10. The structure of the catheter assembly includes an inner tube, a middle tube, and an outer tube 23 arranged sequentially from the inside to the outside. The distal end of the inner tube is connected to the distal capsule 21, the distal end of the middle tube is connected to the loading member 22, and the distal end of the outer tube 23 is detachably connected to the distal capsule 21. When the two are connected, they can jointly accommodate the compressed artificial valve anchoring device 10. The control assembly includes a control handle 24 located at the proximal end for controlling the axial positional relationship between adjacent tubes in the catheter assembly. This can realize the opening and closing control of the capsule assembly and ultimately the release control of the artificial valve anchoring device 10. In this embodiment, the structure of the control assembly is not specifically limited. Those skilled in the art can choose any of the embodiments disclosed in the prior art as needed.

[0071] In this embodiment, when the delivery system is in use, the connector 14 is first connected to the loading component 22 in a straightened state, and the compressed artificial valve anchoring device 10 is loaded into the distal capsule component 21, such as... Figure 4 The distal end of the outer tube 23 is connected to the proximal end of the distal capsule 21, at which point the artificial valve anchoring device 10 is fully loaded and can be inserted into the body via catheter. Upon reaching the target location within the heart, preparations are made to release the artificial valve anchoring device 10. During release, the outer tube 23 is first moved proximally to expose the proximal region of the artificial valve anchoring device 10, facilitating its contact with or connection to the implanted capture ring. Then, the distal capsule 21 is moved distally, such as... Figure 5 The distal portion of the artificial valve anchoring device 10, namely the connector 14, is slowly exposed and released. After the connector 14 is fully exposed, it gradually returns to its shape at body temperature, as... Figure 6 Once the release is complete, the subsequent artificial valve implantation procedure can be performed.

[0072] Example 3

[0073] This invention provides a transcatheter heart valve replacement system, including the artificial valve anchoring device 10 as described in Embodiment 1 above. The technical features already included in Embodiment 1 are naturally inherited in this embodiment and will not be repeated.

[0074] In some embodiments, the transcatheter heart valve replacement system further includes an artificial valve and a catching ring, wherein the catching ring is spirally shaped and can be wound around the chordae tendineae plexus and connected to or abutting against the artificial valve anchoring device 10; the artificial valve can be interference-fitted with the main body 11 of the artificial valve anchoring device 10. In this embodiment, the structure of the catching ring and the artificial valve is not specifically limited, and those skilled in the art can choose any of the embodiments disclosed in the prior art as needed.

[0075] In some embodiments, when performing transcatheter heart valve replacement, a retrieval ring and an artificial valve anchoring device 10 are implanted sequentially first, and then the artificial valve is implanted last. The artificial valve anchoring device 10 can work together with the retrieval ring to simplify the patient's complex mitral / tricuspid valve structure into a standard circular channel, providing a stable anchoring channel for the subsequent artificial valve. The main body 11 and the artificial valve are connected by an interference fit. Since the main body 11 has a certain height, the release height of the artificial valve can be adjusted according to the patient's actual situation when implanting the artificial valve.

[0076] Although exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above exemplary embodiments are merely illustrative and are not intended to limit the scope of this application. Various changes and modifications can be made therein by those skilled in the art without departing from the scope and spirit of this application. All such changes and modifications are intended to be included within the scope of this application as claimed in the appended claims.

Claims

1. An artificial valve anchoring device, characterized in that, The artificial valve anchoring device is capable of radially collapsing and expanding between a radially collapsing structure and a radially expanding structure, and includes a skirt, a main body, and multiple connectors; The skirt edge extends radially outward in an umbrella-shaped manner, and the small-diameter end of the skirt edge is connected to the main body. The main body includes several interconnected grid units; The connector is located at the far end of the skirt and is used to connect to the conveying device. At least a portion of the connector is configured as an elastically deformable segment. The elastically deformable segment is able to be straightened in the delivery state and gradually return to a preset non-linear shape in the release state. Through the gradual deformation of the elastically deformable segment, the gradual release of the artificial valve anchoring device can be achieved.

2. The artificial valve anchoring device according to claim 1, characterized in that, In the non-linear shape structure of the elastic deformation section, the elastic deformation section includes multiple bending units, which are continuously arranged along the axial direction of the connector.

3. The artificial valve anchoring device according to claim 2, characterized in that, Each of the bending units is set at a first preset angle between its opposite sides and between two adjacent bending units. The first preset angle is configured as an acute angle, a right angle, or an obtuse angle.

4. The artificial valve anchoring device according to claim 2, characterized in that, The plane where the bending unit is located is set at a second preset angle with the radial plane where the far end of the skirt is located. The radial plane is perpendicular to the axis of the artificial valve anchoring device. The second preset angle is configured as an acute angle or a right angle.

5. The artificial valve anchoring device according to claim 4, characterized in that, The extension direction of the bending unit is configured at an angle of 60° to 90° with the radial plane where the far end of the skirt portion is located.

6. The artificial valve anchoring device according to claim 2, characterized in that, The plane where the bending unit is located coincides with the extension plane of the skirt.

7. The artificial valve anchoring device according to claim 6, characterized in that, The bending unit extends axially along the skirt edge extension plane or extends obliquely circumferentially along the skirt edge extension plane.

8. The artificial valve anchoring device according to claim 1, characterized in that, The distal end of the connector is further provided with a transverse connecting portion, which is perpendicular to the radial direction of the skirt portion and has a smooth outer surface.

9. The artificial valve anchoring device according to claim 1, characterized in that, At least the elastic deformation segment includes a shape memory material.

10. A conveying system, characterized in that, Including the artificial valve anchoring device as described in any one of claims 1-9, and further including a catheter delivery device; The transcatheter delivery device comprises, from distal to proximal, a capsule assembly, a catheter assembly, and a control assembly. The capsule assembly is used to connect to the artificial valve anchoring device and can radially constrain the artificial valve anchoring device during delivery and release the artificial valve anchoring device after reaching the target position.

11. A transcatheter heart valve replacement system, characterized in that, The device includes the artificial valve anchoring device as described in any one of claims 1-9, and further includes an artificial valve and a catching ring; The catching ring is spiral-shaped and can be coiled around the chordae tendineae plexus and connected to or abutting the artificial valve anchoring device; The artificial valve can be interference-fitted with the main body of the artificial valve anchoring device.

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