An artificial heart valve stent and an artificial heart valve

Abstract

The present invention relates to an artificial heart valve stent and an artificial heart valve. An artificial heart valve stent includes an anchoring frame and a support frame. The anchoring frame includes a plurality of grid units and a first elastic member; two adjacent grid units are connected by the first elastic member to form a hollow spherical anchoring frame. The anchoring frame has an inlet and an outlet that communicate with the inner cavity of the anchoring frame; the support frame is connected to the outlet of the anchoring frame, and the end of the support frame away from the anchoring frame is the outflow end. This valve has a generally spherical anchoring frame and a leaflet support frame that match the shape of the atrium. The anchoring frame is formed by connecting grid units through the first elastic member, which improves the compliance of the anchoring frame, thus better adapting to the size of the atrium, without the need to provide too many specifications of valves to meet the needs of patients, and having a certain degree of dynamic deformation after implantation to meet the needs of atrial contraction, thereby facilitating the rehabilitation process of patients.

Description

Technical Field

[0001] The present invention relates to the technical field of heart valves, and particularly to an artificial heart valve stent and an artificial heart valve. Background Art

[0002] Currently, some artificial heart valve stents have adopted an outer shape adapted to the atrial structure to realize the anchoring of the artificial heart valve. However, due to individual differences in the human body, the specific size of the atrium varies from person to person, which greatly limits the wide use of this type of artificial heart valve. At the same time, during the actual clinical operation, when an artificial heart valve is implanted to improve ventricular blood reflux, the size of the atrium will moderately shrink. Therefore, improving the compliance of the existing artificial heart valve to meet the clinical application requirements has become an urgent problem to be solved. Summary of the Invention

[0003] The present invention provides an artificial heart valve stent and an artificial heart valve, which will solve the technical problem of poor compliance of the existing artificial heart valve.

[0004] The technical solution provided by the present invention is as follows:

[0005] An artificial heart valve stent includes an anchoring frame and a supporting frame. The anchoring frame includes:

[0006] A plurality of grid units;

[0007] A plurality of first elastic members. The grid ends of adjacent two grid units are connected by the first elastic members to form a hollow anchoring frame that matches the physiological structure of the atrium. The anchoring frame has an inflow port and an outflow port that communicate with the inner cavity of the anchoring frame. The supporting frame is connected to the outflow port of the anchoring frame, and the end of the supporting frame away from the anchoring frame is the outflow end;

[0008] Wherein, when the atrium is in the systolic state, the first elastic members are in the contracted state, and the anchoring frame fits with the atrium;

[0009] When the atrium is in the diastolic state, the first elastic members are partially relaxed, so that the anchoring frame and the atrium are in an interference state.

[0010] In this technical solution, the anchoring frame is set in the form of a number of grid units. The number of grid units are connected by a first elastic member to form a spherical anchoring frame. The anchoring frame has a hollow structure, and the formed anchoring frame has an inlet and an outlet. After the support frame is connected to the anchoring frame, the formed spherical anchoring frame can better match the atrium. When it is implanted into the atrium, at this time, the first elastic member provides a certain elastic force, so that the anchoring frame can be better anchored in the atrium. The anchoring frame placed in the atrium will contract with the contraction of the atrium. When the atrium relaxes, the first elastic member between two adjacent grid units slowly unfolds, and the elastic force of the first elastic member received by the two adjacent grid units slowly decreases. And the relaxed anchoring frame is in an interference state with the atrium, so that the anchoring frame can better use its own compliance to be fixed in the atrium without additional structural design to fix the anchoring frame. When the atrium contracts, the first elastic member between two adjacent grid units contracts, so that the grid units can better adapt to the relaxation or contraction of the atrium;

[0011] In this solution, there is no need to add any fixing structure to the anchoring frame, which reduces the damage to the atrium, and the fixed valve support has a certain elasticity and can provide the force for fixing the valve support on the atrium, so that the anchoring frame can be better fixed on the atrium.

[0012] Preferably, the grid unit has an annular structure. The inlet and the outlet on the anchoring frame are on the same axis. A number of the grid units are arranged along the axis. The grid ends close to each other on two adjacent grid units are connected by the first elastic member to form the spherical anchoring frame;

[0013] Among them, when the atrium is in the contraction state, the first elastic member contracts along the axis direction, and the anchoring frame fits with the atrium;

[0014] When the atrium is in the relaxation state, the first elastic member is partially relaxed, so that the anchoring frame is in an interference state with the atrium.

[0015] In this technical solution, the anchoring frame is formed by stacking a number of grid units layer by layer, and the diameter of the grid unit in the middle is the largest, and the other grid units show a decreasing trend from the middle to both ends, so that the formed spherical anchoring frame can better fit in the atrium.

[0016] Preferably, the grid unit has an arc structure. A number of the grid units are circumferentially distributed. The grid ends close to each other in the width direction of two adjacent grid units are connected by the first elastic member, so that the two ends in the length direction of a number of the grid units respectively form the inlet and the outlet, and the convex surfaces of a number of the arc-shaped grid units face outward to form the spherical anchoring frame;

[0017] Among them, when the atrium is in the contraction state, the first elastic member contracts along the circumferential direction of the anchoring frame, and the anchoring frame fits against the atrium;

[0018] When the atrium is in the diastolic state, the first elastic member partially relaxes, so that the anchoring frame is in an interference state with the atrium.

[0019] In this technical solution, the grid unit has an arc-shaped structure, and a plurality of the grid units are arranged circumferentially. The grid has a diamond-shaped structure, and the diamond-shaped ends on two adjacent grid units are connected by a first elastic member.

[0020] The anchoring frame is composed of a plurality of arc-shaped grid units with the same size. Two adjacent grid units are connected by a first elastic member, so as to better form a spherical anchoring frame. Forming a spherical anchoring frame can better fit on the atrium, so that the valve stent can achieve a better fixing effect in the atrium.

[0021] Preferably, a plurality of the grid units and a plurality of the first elastic members are integrally formed, and a single grid on the formed anchoring frame has a diamond-shaped structure.

[0022] Preferably, the first elastic member has a spiral structure, and two ends of the first elastic member are respectively connected to the grid ends close to each other on two adjacent grid units;

[0023] Or;

[0024] The first elastic member has a V-shaped structure, and two open ends of the V-shaped structure are respectively connected to the grid ends close to each other on two adjacent grid units;

[0025] Or;

[0026] The first elastic member has an S-shaped structure, and two S-shaped ends of the S-shaped structure are respectively connected to the grid ends close to each other on two adjacent grid units.

[0027] In this technical solution, by setting the first elastic member into an S-shaped structure, a V-shaped structure or a spiral structure, the two ends of the S-shaped structure, the spiral structure and the V-shaped opening are connected to two adjacent grid units. When in the unused state, the first elastic member is in the normal state. When the valve stent is placed in the atrium, the first elastic member is in a partially compressed state, so that the entire valve stent can provide an elastic force to anchor it on the inner wall of the atrium, thereby achieving a better fixing effect. The first elastic member can deform well when the valve stent is placed, the atrium is in diastolic or systolic state, and it will not cause irreversible deformation of the valve stent when the heart is in diastolic or systolic state. The artificial heart valve has stronger compliance, so that the valve stent can better adapt to the rhythm of atrial diastolic or systolic.

[0028] Preferably, a second elastic member is further included, and the second elastic member connects the support frame and the anchoring frame.

[0029] In this technical solution, by providing the second elastic member which connects the anchoring frame and the support frame, during use, the second elastic member can provide an elastic force, so that when the support frame is fixed, it can play a buffering role, avoiding the rigid fixation of the support frame on the valve leaf and causing harm to the human body. At the same time, the setting of the second elastic member enables the second elastic member to be better stretched when the anchoring frame contracts, avoiding the displacement of the support frame and also avoiding harm to the human body when the heart valve contracts or relaxes.

[0030] Preferably, an ear is further included, and the ear is connected to one end of the support frame away from the anchoring frame, and the ear is located outside the support frame and forms a clamping structure with the outer wall of the support frame.

[0031] In this technical solution, in order to better fix the heart valve, an ear is also provided. The clamping structure formed by the ear and the outer wall of the support frame can better grab the human chordae tendineae, making the fixing effect of the support frame better.

[0032] Preferably, the ear includes a connecting member and a chuck. The connecting member extends and turns outwards from the outside of the support frame. One end of the connecting member is connected to one end of the support frame away from the anchoring frame, and the other end of the connecting member is connected to the chuck.

[0033] In this technical solution, by setting the ear in the form of a connecting member and a chuck, when the support frame is fixed, the chuck part can play a good pressing role, so that the support frame can achieve a good fixing effect, avoiding the detachment of the support frame during use and causing adverse reactions.

[0034] Preferably, the support frame is a hollow cylindrical structure, and the cross-section perpendicular to the axial direction of the support frame is a circular structure;

[0035] Or;

[0036] The support frame is a hollow cylindrical structure, and the cross-section perpendicular to the axial direction of the support frame is a D-shaped structure;

[0037] Or;

[0038] The support frame is a hollow cylindrical structure, and the cross-section perpendicular to the axial direction of the support frame is an oval structure.

[0039] In this technical solution, the support frame can be set into different shapes to adapt to different use environments, so that the support frame can better play a fixing role.

[0040] Preferably, the support frame is arranged inside the anchoring frame and positioned above the human valve annulus tissue.

[0041] In this technical solution, by arranging the support frame inside the anchoring frame, the support frame can be positioned on the valve annulus to avoid damage to the natural valve leaflets caused by the support frame.

[0042] An artificial heart valve includes the above-mentioned artificial heart valve stent, artificial valve leaflets and a skirt. The artificial valve leaflets are connected to the inner side of the support frame, and the skirt is arranged in the support frame and a partial area of the anchoring frame close to the support frame.

[0043] Preferably, the support frame includes an outer support frame and an inner support frame. The inner support frame is connected to the outer support frame, and the valve leaflets are connected to the inner wall of the inner support frame.

[0044] Compared with the prior art, the artificial heart valve stent and artificial heart valve provided by the present invention have the following beneficial effects:

[0045] 1. The present invention provides an implantable artificial heart valve suitable for treating mitral or tricuspid regurgitation. The valve has a generally spherical anchoring frame and a valve leaflet support frame that matches the shape of the atrium. The anchoring frame is formed by connecting grid units through a first elastic member, which improves the compliance of the anchoring frame, enabling the anchoring frame to not only have a rigid support but also have a flexible contraction, so that the anchoring frame can be better fixed, thus better adapting to the size of the atrium, without the need to provide too many specifications of valves to meet the needs of patients, and having a certain degree of dynamic deformation after implantation to meet the needs of atrial contraction, thereby facilitating the rehabilitation process of patients.

[0046] 2. The overall compliance of the stent element of the implantable artificial heart valve provided by the present invention is excellent, suitable for being fully compressed and held in the same delivery system in a non-overlapping manner, thereby fully reducing the diameter of the outer sheath of the delivery system, which is beneficial for completing artificial valve implantation through the transseptal approach via the femoral vein or femoral artery.

[0047] 3. The present invention prevents the position offset of the artificial heart valve during normal heart movement by providing a compressible and expandable clamping structure on the valve leaflet support frame, improving the overall anchoring performance of the valve and enhancing the safety of valve use.

[0048] 4. The present invention connects the support frame and the anchoring frame through a second elastic member. The setting of the second elastic member enables the anchoring frame and the support frame to have a certain degree of dynamic deformation when fixed in the atrium, which can play a buffering role when fixing the support frame, and at the same time, can well adapt to the diastolic or systolic rhythm of the atrium during atrial diastole or systole, avoiding the damage caused by the rigid connection between the support frame and the anchoring frame. Description of the Drawings

[0049] The above characteristics, technical features, advantages and implementation manners of an artificial heart valve stent and an artificial heart valve will be further described below in a clear and understandable manner in conjunction with the accompanying drawings.

[0050] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0051] Figure 2 is a schematic structural diagram of another embodiment of the present invention;

[0052] Figure 3 is Figure 2 an enlarged schematic diagram of the structure of part B in

[0053] Figure 4 is Figure 1 a schematic structural diagram after installing the valve leaflets;

[0054] Figure 5 is Figure 4 a top view structural diagram of

[0055] Figure 6 is Figure 5 an enlarged schematic diagram of the structure of part A in

[0056] Figure 7 is Figure 2 a schematic structural diagram after installing the valve leaflets in

[0057] Figure 8 is a schematic structural diagram of the artificial heart valve of the present invention placed in the atrium.

[0058] Explanation of the reference numerals in the drawings: 100, anchoring frame; 110, grid unit; 120, first elastic member; 130, inlet; 200, support frame; 210, outer stent; 220, connecting member; 230, chuck; 240, outlet; 300, skirt; 400, artificial valve leaflet; 500, second elastic member. Specific embodiments

[0059] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts, and other embodiments can also be obtained.

[0060] For the sake of simplicity of the drawings, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product as a whole. Additionally, for the sake of simplicity and easy understanding of the drawings, in some figures, only one of the components with the same structure or function is schematically illustrated, or only one of them is labeled. In this text, "one" not only means "only this one", but also can mean "more than one" situation.

[0061] It should be further understood that the term "and / or" used in the description of the present application and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0062] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In addition, in the description of the present application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0064] According to an embodiment provided by the present invention, as Figures 1-8 shown, an artificial heart valve stent includes: an anchoring frame and a support frame 200. The anchoring frame includes a plurality of grid units 110 and a plurality of first elastic members 120. Two adjacent grid units 110 are connected by the first elastic members 120 to form a hollow anchoring frame 100 that matches the physiological structure of the atrium. The anchoring frame 100 has an inlet 130 and an outlet that communicate with the inner cavity of the anchoring frame 100; the support frame 200 is connected to the outlet of the anchoring frame 100, and the end of the support frame 200 away from the anchoring frame 100 is the outflow end 240.

[0065] Wherein, when the atrium is in the systolic state, the first elastic members 120 are in a contracted state, and the anchoring frame 100 fits against the atrium; when the atrium is in the diastolic state, the first elastic members 120 are in a partially relaxed state, so that the anchoring frame 100 is in an interference state with the atrium.

[0066] In specific implementation, the anchoring frame includes the following two specific implementation manners:

[0067] As Figures 1-7As shown, the grid unit 110 is an annular grid unit 110. In this embodiment, the grid unit 110 is an annular ring structure, with a number of grid holes provided thereon. The inlet 130 and the outlet on the anchoring frame 100 are on the same axis. A number of grid units 110 are arranged along the axis. The adjacent grid ends on the adjacent two grid units 110 are connected by the first elastic member 120 to form a spherical anchoring frame 100. The grids on the grid unit 110 are in a diamond structure. The two adjacent ends on the adjacent two grid units 110 are connected by the first elastic member 120, so that when the atrium relaxes or contracts, each grid unit 110 does not deform, and only the first elastic member 120 deforms. In this solution, the first elastic member 120 deforms longitudinally along the center to adapt to the relaxation or contraction of the atrium, so as to be better used.

[0068] Similarly, in this embodiment, another specific implementation manner of the grid unit 110 (not shown) is also proposed. The grid unit 110 is in an arc structure. A number of grid units 110 are circumferentially distributed. The adjacent grid ends on the adjacent two grid units 110 in the width direction are connected by the first elastic member 120, so that the two ends in the length direction of a number of grid units 110 respectively form an inlet 130 and an outlet, and the convex surfaces of a number of arc-shaped grid units 110 face outward to form a spherical anchoring frame 100;

[0069] Among them, when the atrium is in the contraction state, the first elastic member 120 contracts along the circumferential direction of the anchoring frame 100, and the anchoring frame 100 fits with the atrium;

[0070] When the atrium is in the relaxation state, the first elastic member 120 partially contracts (that is, relative to the atrium contraction state, the first elastic member 120 partially relaxes), and the anchoring frame 100 and the atrium are always in an interference state, so as to achieve the effect that the anchoring frame 100 always fits with the atrium wall. Specifically, in implementation, the grid unit 110 is in an arc structure. The grid ends at both ends in the width direction of the arc-shaped grid unit 110 are connected to the adjacent grid unit 110 by the first elastic member 120. The two ends in the length direction of a number of grid units 110 respectively form an inlet 130 and an outlet. After a number of arc-shaped grid units 110 are connected by the first elastic member 120, the arc sides of the grid units face outward, so that the connected grid units 110 can better form a spherical anchoring frame 100. A number of grid units 110 are arranged circumferentially. The grids on the grid unit 110 are in a diamond structure. In this solution, the deformation mode of the first elastic member 120 is a transverse deformation mode, so that when the atrium relaxes or contracts, the anchoring frame can better deform and adapt to the relaxation or contraction of the atrium.

[0071] In the specific implementation manners of the above two anchoring frames, adjacent two grid units 110 are connected by a first elastic member 120. The grid units 110 have relatively good rigidity, so that the anchoring frame can play a good rigid supporting role during fixation. The existence of the first elastic member 120 enables there to be a deformation space between adjacent two grid units 110, so that the whole anchoring frame can better adapt to the rhythm of atrial diastole or systole. In this embodiment, as long as the grid units 110 are connected by the first elastic member 120, other shapes of the anchoring frame 100 are also within the protection scope of this application. Similarly, during specific implementation, several grid units 110 and several first elastic members 120 are integrally formed, and the single grid on the formed anchoring frame 100 is in a diamond structure. The grid of the diamond structure has a larger variable space, which can better increase the compliance of the valve stent.

[0072] In another embodiment of the present invention, in order for the first elastic member 120 to better provide elastic support, there are multiple ways for the first elastic member 120. The first elastic member 120 has a certain deformation interval, so that the compliance of the valve stent is better, so that it can deform well with the diastole or systole of the atrium after the heart valve is implanted, so as to adapt to the rhythm of atrial diastole or systole. The following ways are introduced in this embodiment:

[0073] (1) The first elastic member 120 is in a spiral structure. The two ends of the first elastic member 120 are respectively connected to the grid ends of adjacent two grid units 110 that are close to each other. The spiral first elastic member 120 in this embodiment connects two adjacent grid units 110. The spiral first elastic member 120 has a larger compression space and can undergo a larger deformation amount, so that when the atrium is in diastole or systole, it can have a larger deformation range and can better adapt to the diastole or systole of the atrium (not shown).

[0074] (2) The first elastic member 120 is in a V-shaped structure. The two open ends of the V-shaped structure are respectively connected to the grid ends of adjacent two grid units 110 that are close to each other. The design of the V-shaped structure enables the two ends of the V-shaped opening to approach each other during use. The deformed first elastic member 120 provides an elastic force, so that adjacent two grid units 110 can be well abutted against the inner wall of the atrium, so as to be better anchored on the atrium. The two ends of the V-shaped opening will undergo different degrees of deformation with the diastole or systole of the atrium, so that the anchoring frame can better fit on the atrium (not shown).

[0075] (3) The first elastic member 120 is in an S-shaped structure. The two S-shaped ends of the S-shaped structure are respectively connected to the grid ends of adjacent two grid units 110 that are close to each other. Similarly, the first elastic member 120 is designed into an S-shaped structure. The bent part of the S-shaped structure has a deformable space to adapt to the rhythm of atrial diastole or systole (such asFigure 6 as shown;

[0076] In this embodiment, the first elastic member 120 is not limited to the above three ways. The first elastic member 120 can also be designed into a diamond structure, and the elasticity of the diamond structure is greater than that of the grid unit 110. The size of the diamond structure of the first elastic member 120 is smaller than the size of the diamond structure of the grid unit 110. In this embodiment, the first elastic member 120 and the grid unit 110 can be integrally formed. Specifically, a complete sphere can be formed by laser engraving on a spherical metal shell. In specific implementation, more deformation ways of the first elastic member 120 also belong to the protection scope of this application.

[0077] In another embodiment of the present invention, a second elastic member 500 is further included. The second elastic member 500 connects the support frame 200 and the anchoring frame 100. In this embodiment, the second elastic member 500 is in an S-shaped structure, which is similar to the S-shaped first elastic member 120. The second elastic member 500 connects the support frame 200 and the anchoring frame, so as to better buffer during use. Specifically, the second elastic member 500 is integrally formed with the anchoring frame and the support frame 200 and is formed by a laser engraving machine. The S-shaped second elastic member 500 is in a bent state to better connect the support frame 200 and the anchoring frame 100. After fixation, the support frame 200 and the anchoring frame can better adapt to the rhythm of atrial diastole or systole;

[0078] In order to better fix the support frame 200, specifically, as Figure 2 , Figure 3 and Figure 7 shown, an ear is further included. The ear is connected to the end of the support frame 200 away from the anchoring frame 100, and the ear is located outside the support frame 200 to form a clamping structure with the outer wall of the support frame 200.

[0079] During implementation, the ear specifically includes a connecting member 220 and a chuck 230. The connecting member 220 extends and turns outwards from the outside of the support frame 200. One end of the connecting member 220 is connected to the end of the support frame 200 away from the anchoring frame 100, and the other end of the connecting member 220 is connected to the chuck 230. In this embodiment, the chuck 230 is a spherical structure. The spherical chuck 230 can better protect the artificial valve leaf 400 and avoid damage to the artificial valve leaf 400 when the support frame 200 is fixed.

[0080] Specifically, when implemented, the support frame 200 is a hollow grid-like structure, and there are the following ways:

[0081] (1) The support frame 200 is a hollow cylindrical structure, and the cross-section perpendicular to the axial direction of the support frame 200 is a circular structure. The grid shape on the support frame 200 is a rhombus structure, which can better adapt to the diastolic and systolic movements of the heart;

[0082] (2) The support frame 200 is a hollow cylindrical structure, and the cross-section perpendicular to the axial direction of the support frame 200 is a D-shaped structure, which can be realized during actual production;

[0083] (3) The support frame 200 is a hollow cylindrical structure, and the cross-section perpendicular to the axial direction of the support frame 200 is an elliptical structure.

[0084] In this embodiment, it is not limited to the above several methods. During the specific implementation process, the support frame 200 can also be arranged inside the anchoring frame, and the support frame is positioned on the human valve annulus tissue to avoid damage to the natural valve leaf by the support frame. Except for the methods described in this embodiment, other methods are also within the protection scope of this application document.

[0085] Refer again to Figures 1-8 As shown, an artificial heart valve includes the above-mentioned artificial heart valve stent, artificial valve leaf 400, and skirt 300. The artificial valve leaf 400 is connected to the inner side of the support frame 200, and the skirt 300 is arranged in the partial area of the support frame 200 and the part of the anchoring frame close to the support frame 200.

[0086] The support frame 200 includes an outer support 210 and an inner support (not shown). The inner support is connected to the outer support 210, and the artificial valve leaf 400 is connected to the inner wall of the inner support.

[0087] As Figure 8 shown, during specific use, the artificial heart valve is delivered to a specified position in the atrium through an interventional delivery device, then released, and the anchoring frame is anchored on the inner wall of the atrium. The grasping ears grasp the human valve leaf and lift the valve annulus to achieve the fixation of the artificial heart valve.

[0088] It should be noted that the above-mentioned embodiments can be freely combined according to needs. The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An artificial heart valve stent, comprising an anchoring frame and a supporting frame, characterized in that, The anchoring frame includes: A number of grid units, the grid units having an annular structure, a number of the grid units being arranged along the axis, or, the grid units having an arc-shaped structure, a number of the grid units being circumferentially distributed; A number of first elastic members, the grid ends of two adjacent grid units being connected by the first elastic members to form the hollow anchoring frame that matches the physiological structure of the atrium, the anchoring frame having an inlet and an outlet that communicate with the inner cavity of the anchoring frame; the support frame is connected to the outlet of the anchoring frame, and the end of the support frame away from the anchoring frame is the outflow end; Wherein, when the atrium is in the contraction state, the first elastic member is in the contracted state, and the anchoring frame fits with the atrium; When the atrium is in the diastolic state, the first elastic member is partially relaxed, so that the anchoring frame and the atrium are in an interference state; The grid unit has rigidity, and the grid unit does not deform when the atrium is in diastolic or systolic state.

2. The artificial heart valve stent according to claim 1, characterized in that: The grid unit has an annular structure, the inlet and the outlet on the anchoring frame are on the same axis, and the grid ends of two adjacent grid units that are close to each other are connected by the first elastic member to form the spherical anchoring frame; Wherein, when the atrium is in the contraction state, the first elastic member contracts along the axis direction, and the anchoring frame fits with the atrium; When the atrium is in the diastolic state, the first elastic member is partially relaxed, so that the anchoring frame and the atrium are in an interference state.

3. The artificial heart valve stent according to claim 1, wherein: The grid unit has an arc-shaped structure, the grid ends of two adjacent grid units that are close to each other in the width direction are connected by the first elastic member, so that the two ends in the length direction of a number of the grid units respectively form the inlet and the outlet, and the convex surfaces of a number of arc-shaped grid units face outward to form the spherical anchoring frame; Wherein, when the atrium is in the contraction state, the first elastic member contracts along the circumferential direction of the anchoring frame, and the anchoring frame fits with the atrium; When the atrium is in the diastolic state, the first elastic member is partially relaxed, so that the anchoring frame and the atrium are in an interference state.

4. An artificial heart valve stent according to any one of claims 1 to 3, characterized in that: A number of the grid units and a number of the first elastic members are integrally formed, and the single grid on the formed anchoring frame has a diamond structure.

5. The artificial heart valve stent according to any one of claims 1-3, characterized in that: The first elastic member has a spiral structure, and the two ends of the first elastic member are respectively connected to the adjacent ends of two adjacent grid units that are close to each other; Or; The first elastic member has a V-shaped structure, and the two open ends of the V-shaped structure are respectively connected to the grid ends of two adjacent grid units that are close to each other; Or; The first elastic member has an S-shaped structure, and the two S-shaped ends of the S-shaped structure are respectively connected to the grid ends of two adjacent grid units that are close to each other.

6. The artificial heart valve stent according to claim 5, wherein: It further includes a second elastic member, and the second elastic member connects the support frame and the anchoring frame.

7. An artificial heart valve stent according to claim 6, characterized in that: It further includes an ear-catching part, which is connected to the end of the support frame far from the anchoring frame, and the ear-catching part is located outside the support frame, forming a clamping structure with the outer wall of the support frame.

8. An artificial heart valve stent according to claim 7, characterized in that: The ear-catching part includes a connecting piece and a chuck. The connecting piece extends outward and turns outward from the outside of the support frame. One end of the connecting piece is connected to the end of the support frame far from the anchoring frame, and the other end of the connecting piece is connected to the chuck.

9. An artificial heart valve stent according to any one of claims 1-3, characterized in that: The support frame is a hollow cylindrical structure, and the cross-section perpendicular to the axial direction of the support frame is a circular structure; Or; The support frame is a hollow cylindrical structure, and the cross-section perpendicular to the axial direction of the support frame is a D-shaped structure; Or; The support frame is a hollow cylindrical structure, and the cross-section perpendicular to the axial direction of the support frame is an oval structure.

10. A prosthetic heart valve stent according to any one of claims 1 to 3, characterized in that: The support frame is arranged inside the anchoring frame, and the support frame is positioned above the human valve ring tissue.

11. An artificial heart valve, characterized in that, It includes an artificial heart valve stent according to any one of claims 1-10, artificial valve leaflets and a skirt. The artificial valve leaflets are connected to the inner side of the support frame, and the skirt is arranged on the support frame and a partial area of the anchoring frame close to the support frame.

12. An artificial heart valve according to claim 11, characterized in that: The support frame includes an outer support frame and an inner support frame. The inner support frame is connected to the outer support frame, and the valve leaflets are connected to the inner wall of the inner support frame.

Images