A valve stent and an interventional heart prosthesis valve

Abstract

The present application relates to the technical field of medical devices, in particular to a valve stent and an interventional heart prosthesis valve, comprising a stent body and a support ring, further comprising an anchoring assembly, a contraction rope and a sliding assembly; each frame on the top of the stent body is provided with a limiting base; the anchoring assembly is rotatably installed on the limiting base; the anchoring assemblies are circumferentially distributed on the top of the stent body; the contraction rope is unidirectionally and serially arranged between the circumferentially distributed anchoring assemblies; one end of the contraction rope is fixedly connected to the first anchoring assembly, and the other end of the contraction rope passes through the last anchoring assembly and is connected to the sliding assembly; the sliding assembly is installed on the outer side of the stent body; when the sliding assembly pulls the contraction rope, the contraction rope drives the rotation of the plurality of anchoring blocks by using the friction force in the passing process, and then the anchoring spikes on the anchoring blocks rotate inwardly to be retracted, thereby solving the problem of damage to the blood vessel by the anchoring spikes during the transportation of the stent body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a valve stent and an interventional heart prosthesis valve. BACKGROUND

[0002] Traditional valve replacement surgery requires thoracotomy, which is traumatic, has a long recovery time, and has a high surgical risk for elderly patients or patients with other diseases. Therefore, the development of interventional technology provides a new treatment option for these patients. The advent of interventional heart prosthesis valves (such as transcatheter aortic valve replacement, TAVR) enables valve replacement through minimally invasive surgery, avoiding thoracotomy.

[0003] Transcatheter aortic valve replacement (TAVR) has the advantages of minimally invasive and rapid recovery, but one of the most common problems with TAVR is paravalvular leakage, especially in patients with complex anatomy or severe valve calcification, as the artificial valve cannot completely match the surrounding tissue, causing blood to leak through the gap. At the same time, in the early stage of stent delivery and positioning, the stent is easily offset because the stent and the arterial tissue are not anchored tightly enough.

[0004] Therefore, the stent can be anchored by barbs to ensure that the stent is fixed at the position of the blood vessel after implantation; however, the barbs may cause friction or damage to the inner wall of the blood vessel during stent delivery, thereby affecting the smooth delivery of the stent. On the one hand, the barbs need to be sharp and strong enough to ensure that the stent is securely anchored at the target position after implantation; on the other hand, the barbs need to avoid damage to the inner wall of the blood vessel and resistance during delivery.

[0005] In view of the above, in order to overcome the above technical problems, the present application designs a valve stent and an interventional heart prosthesis valve, which solves the above technical problems. SUMMARY

[0006] The technical purpose to be achieved by the present application is to pull the contraction rope on the stent by the sliding assembly, thereby causing the stent to quickly contract and fold, and the contraction rope to drive the barbs to rotate by friction, thereby achieving the folding of the barbs and preventing the barbs from damaging the blood vessel during stent delivery.

[0007] In order to achieve the above technical purpose, the present application provides the following technical scheme:

[0008] The valve stent provided by the present application comprises a stent body and a support ring, the stent body is composed of a mesh frame, and the bottom of the stent body is provided with a support ring for supporting the valve body structure;

[0009] It also comprises an anchoring assembly, a contraction rope and a sliding assembly.

[0010] A limiting base is mounted on each frame at the top of the support body;

[0011] An anchoring assembly is rotatably mounted on the limiting base;

[0012] The anchoring assemblies are circumferentially distributed on the top of the support body; the contraction ropes are unidirectionally and serially arranged between the circumferentially distributed anchoring assemblies;

[0013] One end of the contraction rope is fixedly connected to the first anchoring assembly, and the other end of the contraction rope passes through the last anchoring assembly and is connected to the sliding assembly;

[0014] The sliding assembly is mounted on the outer side of the support body; the sliding assembly pulls the contraction rope through sliding traction, and then the contraction rope pulls the anchoring assembly by friction, and the anchoring assembly rotates on the limiting base under the pulling of the contraction rope.

[0015] The anchoring assembly is composed of a plurality of anchoring blocks, which are circumferentially and arrayed mounted on the support body in sequence, and the contraction rope passes through between the plurality of anchoring blocks in sequence; a limiting sliding groove is formed in the limiting base; the sliding assembly includes a sliding base and a contraction slide buckle, the sliding base is mounted on the outer side of the support body, and the sliding base is partially threaded with the contraction rope, and the contraction slide buckle is slidably mounted on the sliding base and connected with the contraction rope.

[0016] The anchoring assembly is composed of a plurality of anchoring blocks, which are circumferentially and arrayed mounted on the support body in sequence, and the contraction rope passes through between the plurality of anchoring blocks in sequence; a limiting sliding groove is formed in the limiting base; the sliding assembly includes a sliding base and a contraction slide buckle, the sliding base is mounted on the outer side of the support body, and the sliding base is partially threaded with the contraction rope, and the contraction slide buckle is slidably mounted on the sliding base and connected with the contraction rope.

[0017] The anchoring block is composed of left and right two parts, the bottom end of the anchoring block is rotatably mounted on the limiting base through a limiting pivot, and the bottom end of the anchoring block is in contact with the limiting sliding groove through the elastic pad thereon.

[0018] The limiting sliding groove is symmetrically formed in the limiting base along the rotation center of the anchoring assembly; the limiting sliding groove is inclined, so that the anchoring block automatically slides back to the original position when the traction of the contraction rope is lost. When the anchoring block is pulled, the elastic pad is compressed in the limiting sliding groove, providing stable support for the rotation of the anchoring block, avoiding instability caused by excessive movement or external force. This buffering mechanism ensures smooth rotation of the anchoring block under various conditions, and the elastic pad can quickly reset after releasing the pressure, so that the anchoring spike can be deployed in time when needed.

[0019] The folding rope frame is installed on the support body and supports and guides the shrinkage rope to pass through the anchoring assembly and the sliding base.

[0020] The left part of the anchoring block is provided with a through hole for the shrinkage rope to pass through, and a guide groove is further provided outside the through hole, the inner diameter of the guide groove is not more than the inner diameter of the through hole, and the right part of the anchoring block is provided with an anchoring spike. By providing the through hole and the guide groove in the left part of the anchoring block, an effective guiding and fixing path is provided for smooth sliding of the shrinkage rope, so that the anchoring spike can be smoothly controlled when the anchoring block is pulled; the combination of the guide groove and the through hole effectively prevents the winding and sliding resistance of the shrinkage rope, and improves the stability and safety of the anchoring assembly during the implantation and fixation of the support.

[0021] The side of the sliding base is provided with a guide sliding rail, and the middle part of the sliding base is provided with a traction sliding groove; the inside of the shrinkage sliding buckle is provided with a connecting ring, the connecting ring extends inwardly through the traction sliding groove and is connected with the shrinkage rope, and the shrinkage sliding buckle is slidably installed on the guide sliding rail through the sliding rail buckles on the two sides of the inside.

[0022] The present application provides an interventional heart prosthesis valve, which comprises an artificial valve mounted on the inner wall of a support body.

[0023] The artificial valve is connected with the support body through a valve suture, the valve suture is in a shrinkage active state, and the active end of the valve suture passes through the lower part of the sliding base and is connected with the connecting ring.

[0024] The present application has the following advantages:

[0025] 1. The present application connects multiple anchoring blocks in series through the shrinkage rope, so that when the shrinkage rope is pulled by the sliding assembly, the shrinkage rope drives the multiple anchoring blocks to rotate by using the friction in the process, so that the anchoring spikes on the anchoring blocks are retracted inwardly, thereby preventing the anchoring spikes on the support body from damaging the blood vessels during transportation.

[0026] 2. The present application connects the sliding assembly with the valve suture, so that the valve suture is relaxed when the support is contracted, thereby reducing the pulling force of the valve prosthesis during contraction, so as to prevent the artificial valve from being torn during contraction; and when the support is expanded, the sliding assembly relaxes the shrinkage rope at the upper end and the valve suture at the lower end, so as to ensure the tightness of the artificial valve.

[0027] 3. The present application can improve the sliding smoothness of the contraction rope, and avoid the rotation of the anchor block to entangle and lock the contraction rope. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the drawings needed in the specific embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0029] The above and other aspects of the present application will now be described, by way of example only, with reference to the accompanying drawings in which:

[0030] Figure 1 is a schematic view of the overall structure of the support body of the present application;

[0031] Figure 2 is a schematic view of the installation relationship of the anchor assembly and the sliding assembly of the present application;

[0032] Figure 3 is a schematic view of the side of the support body of the present application;

[0033] Figure 4 is an enlarged schematic view of a of the present application Figure 2 ;

[0034] Figure 5 is an enlarged schematic view of b of the present application Figure 2 ;

[0035] Figure 6 is an enlarged schematic view of c of the present application Figure 3 ;

[0036] Figure 7 is a schematic view of the structure of the anchor assembly of the present application;

[0037] Figure 8 is a schematic view of the structure of the contraction sliding buckle of the present application.

[0038] In the drawings: 1, support body; 11, limiting base; 111, limiting sliding groove; 12, folding rope rack; 2, artificial valve; 21, valve suture; 3, anchor assembly; 4, contraction rope; 5, sliding assembly; 51, sliding base; 511, guide sliding rail; 512, traction sliding groove; 52, contraction sliding buckle; 521, connecting ring; 522, sliding rail buckle; 6, anchor block; 61, rope guide groove; 62, anchor spike; 7, elastic pad; 8, limiting pivot. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but merely represents the part of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of the present application.

[0040] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0041] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed. Such terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0042] It should also be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The embodiments of the present disclosure aim to solve the problem that the existing barbs may cause friction or damage to the inner wall of the blood vessel during the stent delivery process, thereby affecting the smooth delivery of the stent. On the one hand, the barbs need to be sharp and strong enough to ensure that the stent can be firmly anchored at the target position after implantation. On the other hand, the damage and resistance of the barbs to the inner wall of the blood vessel during the delivery process need to be avoided. In view of this, the embodiments of the present disclosure provide a vibration sensor for mechanical equipment operation, a plurality of anchoring blocks are connected in series through a contraction rope, and then the contraction rope drives the plurality of anchoring blocks to rotate through the friction force in the process of passing while the sliding assembly pulls the contraction rope, so that the anchoring spikes on the anchoring blocks rotate inward and are retracted, thereby preventing the anchoring spikes on the stent body from damaging the blood vessel during the delivery process.

[0044] As shown in Figures 1-8 The present application provides a valve stent, which comprises a stent body 1 and a support ring, the stent body 1 is composed of a mesh frame, and a support ring for supporting the valve body structure is installed at the bottom of the stent body 1.

[0045] It also comprises an anchoring assembly 3, a contraction rope 4 and a sliding assembly 5.

[0046] A limiting base 11 is installed on each frame at the top of the stent body 1.

[0047] The anchoring assembly 3 is rotatably installed on the limiting base 11.

[0048] The anchoring assemblies 3 are circumferentially distributed at the top of the stent body 1, and the contraction rope 4 is unidirectionally connected in series between the circumferentially distributed anchoring assemblies 3.

[0049] One end of the contraction rope 4 is fixedly connected to the first anchoring assembly 3, and the other end of the contraction rope 4 passes through the last anchoring assembly 3 and is connected to the sliding assembly 5.

[0050] The sliding assembly 5 is installed on the outer side of the stent body 1, and the sliding assembly 5 pulls the contraction rope 4 through sliding, and then the contraction rope 4 pulls the anchoring assembly 3 through friction, and the anchoring assembly 3 rotates on the limiting base 11 under the pulling of the contraction rope 4.

[0051] The stent body 1 supports the valve body through the mesh frame and the support ring, thereby ensuring the stability of the structure. The anchoring assembly 3 is composed of a plurality of anchoring blocks 6, the anchoring blocks 6 are installed on the limiting base 11 through limiting pivots 8 and are circumferentially arranged around the stent body 1 in turn. In the working process, the anchoring blocks 6 rotate through the pulling of the contraction rope 4, the contraction rope 4 is pulled and guided to the plurality of anchoring blocks 6 through the sliding assembly 5, so that the anchoring spikes 62 of the anchoring blocks 6 are gradually folded or unfolded inward, thereby ensuring the contraction protection and stable anchoring of the stent at the appropriate position.

[0052] AsFigures 2-5 As shown, the anchor assembly 3 is composed of a plurality of anchor blocks 6, which are installed in a circumferential array on the stent body 1 in turn, and the contraction rope 4 passes through between the plurality of anchor blocks 6 in turn; the limiting base 11 is provided with a limiting sliding groove 111; the sliding assembly 5 includes a sliding base 51 and a contraction sliding buckle 52, the sliding base 51 is installed on the outer side of the stent body 1, and the contraction rope 4 passes through the sliding base 51, and the contraction sliding buckle 52 is slidably installed on the sliding base 51 and connected with the contraction rope 4.

[0053] The limiting base 11 is provided with a limiting sliding groove 111, which limits the rotation of the anchor block 6 and makes it move along a fixed track, ensuring that the rotation direction and angle of the anchor block 6 are controlled, thereby improving the accuracy of the expansion and contraction process of the anchor spike 62. The limiting sliding groove 111 not only ensures the smooth operation of the anchor block 6 during contraction and expansion, but also ensures that the anchor spike 62 is expanded at the right time, avoiding unnecessary tissue damage.

[0054] The operator pulls the contraction rope 4 through a sliding action, and the contraction rope 4 slides in the sliding base 51, driving the anchor block 6 to retract or expand the anchor spike 62 in turn; thereby ensuring the synchronization and coordination of the actions of each anchor block 6 during stent expansion, improving the stability of the stent anchor, and avoiding the risk of stent displacement or loosening.

[0055] As shown in Figure 6 and Figure 7 , the anchor block 6 is composed of left and right two parts, the bottom end of the anchor block 6 is rotatably installed on the limiting base 11 through the limiting pivot 8, and the bottom end of the anchor block 6 is in contact with the limiting sliding groove 111 through the elastic pad 7 thereon.

[0056] The anchor block 6 is divided into left and right two parts, so that the perforations on the anchor block 6 through which the contraction rope 4 passes are provided at positions deviating from the pivot, thereby ensuring that the contraction rope 4 can drive the anchor block 6 to rotate when sliding in the perforation; when the contraction rope 4 is pulled, the anchor block 6 rotates on the pivot, driving the anchor spike 62 to retract or expand inward, thereby ensuring that the anchor block 6 can smoothly retract and expand, especially during stent implantation, the action of the anchor spike 62 can be controlled, reducing damage to the blood vessel wall.

[0057] As shown in Figure 4 and Figure 6 , the limiting sliding groove 111 is symmetrically provided on the limiting base 11 along the rotation center of the anchor assembly 3; the limiting sliding groove 111 is inclined, thereby causing the anchor block 6 to automatically slide back after losing the traction of the contraction rope 4.

[0058] The limiting sliding groove 111 is centrally symmetrically arranged on the anchoring assembly 3, so that the anchoring block 6 remains stable and balanced during rotation by 90 degrees, thereby avoiding deviation or irregular movement; the limiting sliding groove 111 is inclinedly arranged, so that after losing the traction of the contraction rope 4, the anchoring block 6 can be automatically reset by relying on gravity and the inclined structure of the limiting sliding groove 111. When the contraction rope 4 is loosened, the anchoring block 6 is no longer controlled by external force, but can automatically return to the original position by relying on gravity through the inclined arrangement of the limiting sliding groove 111.

[0059] As shown in the accompanying drawings, Figure 4 The support body 1 is provided with a foldable folding rope support 12, which supports and guides the contraction rope 4 to pass through the anchoring assembly 3 and the sliding base 51.

[0060] The folding rope support 12 is foldable, thereby enabling flexible adjustment of the support and folding form during contraction and expansion of the support body 1 to adapt to the state changes of the support body 1 at different stages. The folding rope support 12 mainly ensures that the contraction rope 4 can smoothly pass through the anchoring assembly 3 and the sliding base 51, and ensures smooth and unobstructed transmission and control of the contraction rope 4 between different assemblies. The folding rope support 12 helps to avoid the phenomenon of entanglement, knotting or jamming of the contraction rope 4 during movement.

[0061] As shown in the accompanying drawings, Figure 7 The left part of the anchoring block 6 is provided with a through hole for the contraction rope 4 to pass through, and a guide groove 61 is further provided outside the through hole, the inner diameter of the guide groove 61 is not more than the inner diameter of the through hole, and the right part of the anchoring block 6 is provided with an anchoring spike 62.

[0062] The through hole and the guide groove 61 ensure that the contraction rope 4 can control the rotation of the anchoring block 6 when pulled, thereby realizing the expansion and folding of the anchoring spike 62; during operation, when the contraction rope 4 is pulled, the anchoring block 6 will transmit power through the contraction rope 4 in the through hole, thereby driving the expansion or retraction of the anchoring spike 62. The presence of the guide groove 61 further ensures smooth operation of the contraction rope 4, avoiding poor operation due to friction or rotation angle of the anchoring block 6.

[0063] The side of the sliding base 51 is provided with a guide sliding rail 511, and the middle of the sliding base 51 is provided with a traction sliding groove 512; the inside of the contraction sliding buckle 52 is provided with a connecting ring 521, the connecting ring 521 extends inward through the traction sliding groove 512 and is connected with the contraction rope 4, and the contraction sliding buckle 52 is slidably installed on the guide sliding rail 511 through the sliding rail buckles 522 on both sides of the inside. The guide sliding rail 511 provides a stable sliding path for the contraction sliding buckle 52 in the sliding assembly 5, and the sliding base 51 ensures that the contraction sliding buckle 52 can smoothly slide on the guide sliding rail 511, thereby controlling the pulling and relaxing process of the contraction rope 4.

[0064] like Figures 1-8 As shown, the present invention provides an interventional heart prosthetic valve, comprising an artificial valve 2 and a valve stent, wherein the artificial valve 2 is mounted on the inner wall of the stent body 1;

[0065] The artificial valve 2 is connected to the stent body 1 through a valve suture 21 . The valve suture 21 is in a contracted active state. The active end of the valve suture 21 passes through the lower part of the sliding base 51 and is connected to the connecting ring 521 .

[0066] The artificial valve 2 is connected to the inner wall of the stent body 1 through the valve suture 21; the suture has a retractable property, and the contraction and relaxation of the valve suture 21 are operated by the sliding component 5, thereby ensuring that the artificial valve 2 is firmly fixed on the stent and has reasonable tension, avoiding tearing and damage to the artificial valve 2 during operation; thereby ensuring the controllable expansion of the valve and reducing the risk of structural damage that may occur during transplantation.

[0067] During operation of the present invention, the operator pulls the sliding assembly 5 downward, and the sliding assembly 5 is guided to slide on the guide rail 511 by contracting the slider 52, and at the same time, the connecting ring 521 on the contraction slider 52 pulls the contraction rope 4 downward, and the contraction rope 4 passes through the sliding base 51 and the folding rope rack 12. The contraction rope 4 slides and drives the folding rope rack 12 to unfold through friction, and the contraction rope 4 slides on multiple anchor blocks 6, and then the contraction rope 4 drives multiple anchor blocks 6 to rotate through the perforations on the anchor blocks 6; at the same time, the connecting ring 521 on the contraction slider 52 will also release the valve suture 21 downward, thereby slightly loosening the connection between the artificial valve 2 and the stent body 1, thereby preventing the artificial valve 2 from tearing when it contracts.

[0068] The anchor block 6 rotates on the limiting base 11 via the limiting rotating shaft 8 at the bottom end, thereby causing the anchoring spikes 62 on the anchor block 6 to rotate inward and retract, and the elastic pad 7 at the bottom end of the rotating anchor block 6 to rotate along the inclined limiting sliding groove 111, thereby causing the elastic pad 7 to be compressed to a certain extent; when the anchor block 6 rotates inward nearly 90 degrees, the retraction rope 4 will be embedded in the rope guide groove 61 next to the perforation, thereby preventing the retraction rope 4 from being entangled and locked by the rotation of the anchor block 6;

[0069] Then, the operator will transport the stent with the stent body 1 and the artificial valve 2 to the transplant site. When the balloon is inflated to expand the stent body 1, the contraction rope 4 is pulled to make the contraction slide buckle 52 slide upward, so that the contraction slide buckle 52 pulls the valve suture 21 to tightly adhere the artificial valve 2 to the stent body 1; at the same time, the compressed elastic pad 7 on the anchor block 6 is reset under the guidance of the inclined limiting sliding groove 111, and then the anchor block 6 rotates outwardly by 90 degrees to expand the anchor spike 62, thereby realizing the timely anchoring of the transplant site.

[0070] The above description is only the disclosure of the present application in view of the above detailed description. The terms used in the appended claims should not be interpreted as limiting the present application to the specific embodiments disclosed in the specification. Instead, the scope of the present application will be determined entirely by the appended claims, which will be interpreted in accordance with the established principles of claim interpretation.

Claims

1. A valve stent, comprising a stent body (1) and a support ring, the stent body (1) being composed of a mesh frame, and a support ring being mounted at the bottom of the stent body (1) for supporting an artificial valve (2); further comprising an anchoring assembly (3), a contraction rope (4) and a sliding assembly (5); a limiting base (11) being mounted on each frame at the top of the stent body (1); the anchoring assembly (3) being rotatably mounted on the limiting base (11); the anchoring assembly (3) being circumferentially arrayed at the top of the stent body (1); the circumferentially arrayed anchoring assemblies (3) being unidirectionally and serially connected by the contraction rope (4); one end of the contraction rope (4) being fixedly connected to the first anchoring assembly (3), and the other end of the contraction rope (4) being threaded through the last anchoring assembly (3) and connected to the sliding assembly (5); the anchoring assembly (3) being composed of a plurality of anchoring blocks (6), the anchoring blocks (6) being circumferentially arrayed on the stent body (1) in sequence, and the contraction rope (4) being threaded through the plurality of anchoring blocks (6) in sequence; the anchoring block (6) being composed of a left part and a right part; the left part of the anchoring block (6) being provided with a through hole for the contraction rope (4) to pass through, and the right part of the anchoring block (6) being provided with an anchoring spike (62); the sliding assembly (5) being mounted on the outer side of the stent body (1); the sliding assembly (5) pulling the contraction rope (4) through sliding, and then the contraction rope (4) pulling the anchoring assembly (3) by friction, the anchoring assembly (3) rotating on the limiting base (11) under the pulling of the contraction rope (4), thereby driving the anchoring spike to be retracted or unfolded. characterized in that a limiting sliding groove (111) being formed on the limiting base (11); the sliding assembly (5) comprising a sliding base (51) and a contraction sliding buckle (52), the sliding base (51) being mounted on the outer side of the stent body (1), and the contraction rope (4) being threaded through the upper part of the sliding base (51), the contraction sliding buckle (52) being slidably mounted on the sliding base (51) and connected to the contraction rope (4). the bottom end of the anchoring block (6) being rotatably mounted on the limiting base (11) through a limiting pivot (8), and the bottom end of the anchoring block (6) being in contact with the limiting sliding groove (111) through an elastic pad (7) thereon. the limiting sliding groove (111) being symmetrically formed on the limiting base (11) along the rotation center of the anchoring assembly (3); the limiting sliding groove (111) being obliquely arranged, thereby enabling the anchoring block (6) to automatically slide back to the original position after losing the traction of the contraction rope (4). a foldable folding rope rack (12) being mounted on the stent body (1), the folding rope rack (12) supporting and guiding the contraction rope (4) to pass through the anchoring assembly (3) and the sliding base (51). a guide groove (61) being further formed on the outer side of the through hole, the inner diameter of the guide groove (61) being not more than the inner diameter of the through hole. ​ 2. The valve stent of claim 1, wherein: ​ 3. The valve support of claim 2, wherein: ​ 4. The valve support of claim 3, wherein: ​ 5. The valve support of claim 2, wherein: ​ 6. The valve support of claim 2, wherein: ​ 7. The valve support of claim 2, wherein: The side of the sliding base (51) is provided with a guide slide rail (511), and the middle of the sliding base (51) is provided with a traction slide groove (512); the inner side of the contraction slide buckle (52) is provided with a connecting ring (521), the connecting ring (521) extends inwardly through the traction slide groove (512) and is connected with the contraction rope (4), and the contraction slide buckle (52) is slidably installed on the guide slide rail (511) through slide rail buckles (522) on the two inner sides.

8. An interventional heart prosthesis valve, characterized by: The artificial valve (2) is installed on the inner wall of the stent body (1); The artificial valve (2) is connected with the stent body (1) through a valve suture (21), the valve suture (21) has contractility, the movable end of the valve suture (21) passes through the lower part of the sliding base (51) and is connected with the connecting ring (521), and the contraction and relaxation of the valve suture (21) are operated through the sliding assembly (5).

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