A heart valve

Abstract

The present invention provides a heart valve, which relates to the field of medical devices. The heart valve comprises a valve leaflet, a valve frame, an inner skirt and an outer skirt; the inner skirt abuts against the inner wall of the valve frame, and the first end of the inner skirt is sutured with the first end of the valve frame; the valve leaflet is arranged in the outer skirt, and the first end of the valve leaflet, the first end of the outer skirt and the second end of the inner skirt are sutured with the second end of the valve frame; the second end of the valve leaflet is turned inward, and the second end of the valve leaflet is sutured inside the valve frame; the second end of the outer skirt is turned outward, and the second end of the outer skirt is sutured outside the valve frame. The present invention can improve the medical effect of the heart valve.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a heart valve. Background Art

[0002] Artificial heart valves are mainly fixed to the stent by suturing and other methods, and then the pericardial tissue forms a two-leaf or three-leaf structure in the center of the stent to simulate the original human valve. The product is implanted in the position of the original valve to replace the original diseased valve. Common heart valves currently have exposed sutures on the blood flushing surface, and there is a risk of thrombosis when blood contacts the sutures. It can be seen that the probability of thrombosis in the heart valves in the prior art is relatively high. Summary of the invention

[0003] The embodiment of the present invention provides a heart valve to solve the problem of high probability of thrombosis in the heart valve.

[0004] In a first aspect, an embodiment of the present invention provides a heart valve, including leaflets, a valve frame, an inner skirt and an outer skirt;

[0005] The inner skirt abuts against the inner wall of the valve frame, and the first end of the inner skirt is sutured to the first end of the valve frame;

[0006] The leaflet is arranged in the outer skirt, and the first end of the leaflet, the first end of the outer skirt and the second end of the inner skirt are sutured to the second end of the valve frame;

[0007] The second end of the leaflet is inverted, and the second end of the leaflet is sutured and arranged inside the valve frame;

[0008] The second end of the outer skirt is turned outward, and the second end of the outer skirt is sutured and arranged outside the valve frame.

[0009] Optionally, the first end of the leaflet is a triangular sawtooth adapted to a cell of the valve frame;

[0010] The second end of the inner skirt is a triangular sawtooth adapted to the cells of the petal frame;

[0011] The first end of the outer skirt is a triangular sawtooth adapted to the cells of the valve frame;

[0012] The triangular sawtooth structure at the first end of the leaflet overlaps with the triangular sawtooth structure at the first end of the outer skirt, and butts with the triangular sawtooth structure at the second end of the inner skirt.

[0013] Optionally, the leaflet includes a first equally divided portion, a second equally divided portion, and a third equally divided portion, wherein the first equally divided portion is a suture area between the third end of the leaflet and the fourth end of the leaflet;

[0014] The leaflet is sutured to the valve frame through the first bisecting portion, the second bisecting portion and the third bisecting portion.

[0015] Optionally, the leaflet further includes a first overlapping slice, the first overlapping slice is sutured to a first equally divided portion of the leaflet, and the leaflet is sutured to the valve frame via the first overlapping slice.

[0016] Optionally, the valve frame includes a first positioning beam, a second positioning beam and a third positioning beam, and the valve leaf also includes a second overlapping slice and a third overlapping slice;

[0017] The first positioning beam is sutured to the first equally divided portion of the leaflet through the first overlapping slice;

[0018] The second positioning beam is sutured to the second equally divided portion of the leaflet through the second overlapping slice;

[0019] The third positioning beam is sutured to the third equally divided portion of the leaflet through the third overlapping slice.

[0020] Optionally, the second end of the outer skirt covers at least one cell of the valve frame, and the height of the second end of the outer skirt is less than or equal to the height of the first end of the inner skirt.

[0021] Optionally, the material of the leaflet is pericardial material.

[0022] Optionally, the material of the inner skirt is pericardial material.

[0023] Optionally, the material of the first overlapping slices is pericardial material;

[0024] The material of the second overlapping slice is pericardial material;

[0025] The material of the third overlapping slice is pericardial material.

[0026] Optionally, the material of the outer skirt is polyester fiber.

[0027] In an embodiment of the present invention, the heart valve includes a leaflet, a valve frame, an inner skirt and an outer skirt, wherein the first end of the inner skirt is sutured with the first end of the valve frame, the leaflet is arranged in the outer skirt, the first end of the leaflet, the first end of the outer skirt and the second end of the inner skirt are sutured with the second end of the valve frame; the second end of the leaflet is turned inward, and the second end of the leaflet is sutured inside the valve frame; the second end of the outer skirt is turned outward, and the second end of the outer skirt is sutured outside the valve frame. By turning the second end of the leaflet inward and suturing it with the valve frame, there is no exposed suture on the blood flow flushing surface, which can reduce the probability of thrombus formation, thereby improving the medical effect of the heart valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is one of the structural diagrams of a heart valve provided by an embodiment of the present invention;

[0029] Figure 2 This is the second structural diagram of a heart valve provided by an embodiment of the present invention;

[0030] Figure 3 This is one of the structural diagrams of a leaflet provided by an embodiment of the present invention;

[0031] Figure 4 This is the third structural diagram of another heart valve provided by an embodiment of the present invention;

[0032] Figure 5 This is the fourth structural diagram of another heart valve provided by an embodiment of the present invention;

[0033] Figure 6 This is the fifth structural diagram of another heart valve provided by an embodiment of the present invention;

[0034] Figure 7 This is the sixth structural diagram of another heart valve provided by an embodiment of the present invention;

[0035] Figure 8 This is the seventh structural diagram of another heart valve provided by an embodiment of the present invention;

[0036] Fig. 9 This is the eighth structural diagram of another heart valve provided by an embodiment of the present invention;

[0037] Fig.10 This is the second structural diagram of the leaflet provided by the embodiment of the present invention;

[0038] Fig.11 This is a structural diagram of an inner skirt provided by an embodiment of the present invention;

[0039] Fig.12 It is a structural diagram of an outer skirt provided by an embodiment of the present invention;

[0040] Fig.13 This is the third structural diagram of the leaflet provided by the embodiment of the present invention;

[0041] Fig.14 This is the ninth structural diagram of the heart valve provided by the embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0044] See also Figure 1 , Figure 1 is one of the structural diagrams of a heart valve provided by an embodiment of the present invention, such as Figure 1 As shown, a heart valve comprises a valve leaflet 1, a valve frame 2, an inner skirt 3 and an outer skirt 4;

[0045] The inner skirt 3 abuts against the inner wall of the valve frame 2, and the first end of the inner skirt 3 is sutured to the first end of the valve frame 2;

[0046] The flap 1 is arranged in the outer skirt 4, and the first end of the flap 1, the first end of the outer skirt 4 and the second end of the inner skirt 3 are sutured with the second end of the flap frame 2;

[0047] The second end of the leaflet 1 is turned inward, and the second end of the leaflet 1 is sutured and arranged inside the valve frame 2;

[0048] The second end of the outer skirt 4 is turned outward, and the second end of the outer skirt 4 is sutured and arranged outside the valve frame 2.

[0049] The heart valve mainly prevents blood from flowing backward by closing the leaflets 1, and allows blood to flow smoothly by opening the leaflets 1. The valve frame 2 is a support system for the leaflets 1, and the leaflets 1 can be sutured and set inside the valve frame 2. The inner skirt 3 and the outer skirt 4 are mainly used to prevent blood from leaking sideways when the leaflets 1 are open.

[0050] The inner skirt 3 is set into a tubular shape by sewing. Figure 2 As shown, the first end of the inner skirt 3 is sewn to the first end of the valve frame 2, the inner skirt 3 is fitted to the inner wall of the valve frame 2, and then the first end of the inner skirt 3 is sewn and fixed to the first end of the valve frame 2. The sewing path of the first end of the inner skirt 3 and the first end of the valve frame 2 is as shown in FIG. Figure 3 shown.

[0051] like Figure 4 As shown, the valve leaflet 1, which is in a tubular shape after suturing, is turned inward, the suture at the second end of the valve leaflet 1 faces outward, and there is no suture on the inner wall of the valve leaflet 1. Figure 5 As shown, the leaflet 1 is arranged in the outer skirt 4, the first end of the leaflet 1 is aligned with the first end of the outer skirt 4, and then connected with the second end of the inner skirt 3, and then each stitch passes through the second end of the inner skirt 3, the first end of the leaflet 1 and the first end of the outer skirt 4 to sew with the valve frame 2, and the sewing path of the first end of the leaflet 1, the first end of the outer skirt 4 and the second end of the inner skirt 3 and the second end of the valve frame 2 is as shown in FIG. Figure 6 shown.

[0052] like Figure 7 As shown, the second end of the leaflet 1 is turned inward, and the second end of the leaflet 1 is sutured and set inside the valve frame 2. When the second end of the leaflet 1 is sutured and set inside the valve frame 2, the second end of the leaflet 1 and the valve frame 2 are completely sutured, which may cause the leaflet 1 to be unable to close. The side surfaces of three equally divided points at the second end of the leaflet 1 can be selected to be sutured with the valve frame 2. In this way, when the blood flows, there is no exposed suture on the blood flow flushing surface, which can reduce the risk of thrombosis. In addition, the suture position between the second end of the leaflet 1 and the valve frame 2 is higher than the suture position between the first end of the inner skirt 3 and the valve frame 2. If the suture position between the first end of the inner skirt 3 and the valve frame 2 is higher than the suture position between the second end of the leaflet 1 and the valve frame 2, incomplete closure of the leaflet 1 may be caused. As shown Figure 8 As shown, the second end of the outer skirt 4 is turned outward, and the second end of the outer skirt 4 is sutured and arranged outside the valve frame 2.

[0053] like Fig. 9 As shown, the leaflet 1 is opened, and blood flows from bottom to top through the outer skirt 4 and the leaflet 1 in sequence. There is no exposed suture on the blood flow flushing surface, which can reduce the risk of thrombosis. In addition, the inner skirt 3 and the outer skirt 4 can also prevent the side leakage of blood when the leaflet 1 is open, wherein the inner skirt 3 is mainly used to prevent the side leakage of blood, and the outer skirt 4 can play an auxiliary role in preventing the side leakage of blood.

[0054] In an embodiment of the present invention, the heart valve comprises a leaflet 1, a valve frame 2, an inner skirt 3 and an outer skirt 4, wherein the first end of the inner skirt 3 is sutured with the first end of the valve frame 2, the leaflet 1 is arranged in the outer skirt 4, the first end of the leaflet 1, the first end of the outer skirt 4 and the second end of the inner skirt 3 are sutured with the second end of the valve frame 2; the second end of the leaflet 1 is turned inward, and the second end of the leaflet 1 is sutured inside the valve frame 2; the second end of the outer skirt 4 is turned outward, and the second end of the outer skirt 4 is sutured outside the valve frame 2. By turning the second end of the leaflet 1 inward and sutured with the valve frame 2, there is no exposed suture on the blood flow flushing surface, which can reduce the risk of thrombosis, thereby improving the medical effect of the heart valve.

[0055] As an optional embodiment, the first end of the leaflet 1 is a triangular sawtooth adapted to the cell of the valve frame 2;

[0056] The second end of the inner skirt 3 is a triangular sawtooth adapted to the cells of the petal frame 2;

[0057] The first end of the outer skirt 4 is a triangular sawtooth adapted to the cells of the petal frame 2;

[0058] The triangular sawtooth structure at the first end of the leaflet 1 overlaps with the triangular sawtooth structure at the first end of the outer skirt 4 , and butts with the triangular sawtooth structure at the second end of the inner skirt 3 .

[0059] like Fig.10 As shown, the first end of the leaflet 1 is a triangular serration. To facilitate suturing, the size and shape of the triangular serration are adapted to the size and shape of the vertex angles of the cells of the valve frame 2. The cells of the valve frame 2 are diamond-shaped cells, and the upper and lower vertex angles have the same shape and size. In other words, the number and size of the triangular serrations at the first end of the leaflet 1 depend on the structure of the valve frame 2, and the triangular serration portion can overlap with the triangle of the lower vertex angle of the diamond-shaped cell of the valve frame 2. In addition, the leaflet 1 can be sewed into a cylindrical shape in the following manner: the square leaflet 1 can be folded first, and the edges of the third and fourth ends of the leaflet 1 can be overlapped. Furthermore, the edges of the third and fourth ends can be sewed, and then at the second end of the leaflet 1 without the triangular serration structure, the edges of the third and fourth ends can be sewed together to sew the square leaflet 1 into a cylindrical shape.

[0060] like Fig.11 As shown, the second end of the inner skirt 3 is a triangular sawtooth that matches the cell of the valve frame 2, that is, the number and size of the triangular sawtooth of the second end of the inner skirt 3 depends on the structure of the valve frame 2, and the triangular sawtooth portion can coincide with the triangle of the lower vertex of the diamond-shaped cell of the valve frame 2. In addition, the first end of the inner skirt 3 can also be a triangular sawtooth that matches the cell of the valve frame 2.

[0061] like Fig.12 As shown, the first end of the outer skirt 4 is a triangular serration that matches the cells of the valve frame 2. That is, the number and size of the triangular serrations at the first end of the outer skirt 4 depend on the structure of the valve frame 2, and the triangular serration part can coincide with the triangle of the lower vertex of the diamond-shaped cells of the valve frame 2.

[0062] The first end of the leaflet 1, the first end of the outer skirt 4 and the second end of the inner skirt 3 are sewed to the second end of the valve frame 2 as follows: the triangular serrations at the first end of the leaflet 1 are aligned with the triangular serrations at the first end of the outer skirt 4, and then docked with the triangular serrations at the second end of the inner skirt 3 to ensure the tightness of the sew, and then each needle passes through the triangular serrations of the inner skirt 3, the triangular serrations of the leaflet 1 and the triangular serrations of the outer skirt 4 to be sewed to the valve frame 2.

[0063] In this embodiment, since the first end of the leaflet is a triangular serration that matches the cell of the valve frame, the second end of the inner skirt is a triangular serration that matches the cell of the valve frame, and the first end of the outer skirt is a triangular serration that matches the cell of the valve frame, since the triangular serration matches the cell of the valve frame, the convenience of suturing can be improved.

[0064] Optionally, the leaflet 1 includes a first equally divided portion, a second equally divided portion, and a third equally divided portion, wherein the first equally divided portion is a suture area between the third end of the leaflet 1 and the fourth end of the leaflet 1;

[0065] The leaflet 1 is sutured to the valve frame 2 through the first bisecting portion, the second bisecting portion and the third bisecting portion.

[0066] Among them, the tubular leaflet 1 can be divided into three equal parts, and the area where each part intersects at the second end of the leaflet 1 is an equal division part. Therefore, the leaflet 1 includes a first equal division part, a second equal division part and a third equal division part, among which the suture area between the third end of the leaflet 1 and the fourth end of the leaflet 1 is the first equal division part, which can reduce one suture area and improve the efficiency of suture.

[0067] In addition, the valve leaf 1 is sutured with the valve frame 2 through the first, second and third bisecting parts. The second end of the valve leaf 1 is sutured with the valve frame 2 through the bisecting parts, which can improve the opening and closing state of the valve leaf.

[0068] In this embodiment, since the leaflet includes a first equal division, a second equal division and a third equal division, the first equal division is the suture area between the third end of the leaflet and the fourth end of the leaflet, the suturing efficiency can be improved. The leaflet is sutured to the valve frame through the first equal division, the second equal division and the third equal division, which can improve the opening and closing states of the leaflet, thereby improving the medical effect of the heart valve.

[0069] Optionally, the leaflet 1 further includes a first overlapping slice, the first overlapping slice is sutured to a first equally divided portion of the leaflet 1, and the leaflet 1 is sutured to the valve frame 2 via the first overlapping slice.

[0070] like Fig.13As shown, when the leaflet 1 is sutured into a tubular leaflet, a first overlapping slice can be added to the suture area, and then the interface between the first overlapping slice and the tubular leaflet 1 is sutured. In addition, the leaflet 1 can also be sutured with the valve frame 2 through the first overlapping slice. The overlapping slice is a long and thin strip slice that can share the tension of the thin thread at the suture and improve the stability of the suture.

[0071] In this embodiment, since the leaflet also includes a first overlapping slice, the first overlapping slice is sutured to the first equally divided part of the leaflet, and the leaflet is sutured to the valve frame through the first overlapping slice. The overlapping slice can share the tension of the fine line at the suture point, improve the stability of the suture point, and thus improve the medical effect of the heart valve.

[0072] Optionally, the flap frame 2 includes a first positioning beam, a second positioning beam and a third positioning beam, and the flap 1 also includes a second overlapping slice and a third overlapping slice;

[0073] The first positioning beam is sutured to the first equally divided portion of the leaflet 1 through the first overlapping slice;

[0074] The second positioning beam is sutured to the second equally divided portion of the leaflet 1 through the second overlapping slice;

[0075] The third positioning beam is sutured to the third equally divided portion of the leaflet 1 through the third overlapping slice.

[0076] The leaflet 1 includes a first overlapping slice, a second overlapping slice and a third overlapping slice. Fig.13 As shown, the first overlapping slice is sutured to the first equally divided part of the leaflet 1 , the second overlapping slice is sutured to the second equally divided part of the leaflet 1 , and the third overlapping slice is sutured to the third equally divided part of the leaflet 1 .

[0077] Among them, the first positioning beam, the second positioning beam and the third positioning beam of the valve frame 2 correspond to the first, second and third equal parts of the leaflet 1 respectively. The first positioning beam is sutured with the first equal part of the leaflet 1 through the first overlapping slice, the second positioning beam is sutured with the second equal part of the leaflet 1 through the second overlapping slice, and the third positioning beam is sutured with the third equal part of the leaflet 1 through the third overlapping slice. The second end of the leaflet 1 is sutured with the valve frame 2 through the overlapping slice, which can share the tension of the fine line at the suture point and improve the stability of the suture point. The details of the suture of the second positioning beam with the second equal part of the leaflet 1 through the second overlapping slice are shown in the figure. Fig.14As shown, the suture thread passes through the second overlapped slice of the leaflet 1 and the second equally divided part of the leaflet 1, and then wraps around the second positioning beam of the valve frame 2 for 5-10 turns, and is fastened and knotted. When the leaflet 1 is opened and blood flows, the suture area between the second end of the leaflet 1 and the valve frame 2 is subjected to a greater flushing force of the blood flow. Through this suture method, the suture between the second end of the leaflet 1 and the valve frame 2 can be stabilized, and no suture thread is exposed on the blood flow flushing surface.

[0078] In this embodiment, the valve frame 2 includes a first positioning beam, a second positioning beam and a third positioning beam. The first positioning beam is sutured with the first equal part of the leaflet 1 through the first overlapping slice, the second positioning beam is sutured with the second equal part of the leaflet 1 through the second overlapping slice, and the third positioning beam is sutured with the third equal part of the leaflet 1 through the third overlapping slice. The second end of the leaflet 1 is sutured to the valve frame 2 through the first overlapping slice, the second overlapping slice and the third overlapping slice, which can share the tension of the thin line at the suture point and improve the stability of the suture point.

[0079] Optionally, the second end of the outer skirt 4 covers at least one cell of the valve frame 2 , and the height of the second end of the outer skirt 4 is less than or equal to the height of the first end of the inner skirt 3 .

[0080] If the height of the suture position between the second end of the outer skirt 4 and the valve frame 2 is too high, blood circulation may be blocked. Therefore, the second end of the outer skirt 4 is turned outward to cover at least one cell of the valve frame 2, and the height of the second end of the outer skirt 4 is less than or equal to the height of the first end of the inner skirt 3.

[0081] In this embodiment, since the second end of the outer skirt covers at least one cell of the valve frame, the height of the second end of the outer skirt is less than or equal to the height of the first end of the inner skirt, which can reduce the obstruction of blood circulation and thus improve the medical effect of the heart valve.

[0082] Optionally, the leaflet 1 is made of pericardial material.

[0083] Among them, pericardial materials mainly include porcine pericardium and bovine pericardium. Porcine pericardium is a dense tissue that wraps the pig heart, and bovine pericardium is a dense tissue that wraps the bovine heart. Porcine pericardial tissue and bovine pericardial tissue have a high collagen content and are very dense and tight. The heart valves made from them have better tolerance to the pressure of the cardiac cycle and are less bent under bending stress. In addition, the hemodynamic performance of bovine pericardial valves is better than that of porcine heart valves.

[0084] In this embodiment, since the material of the valve leaflet is pericardial material, the heart valve made of pericardial material has better tolerance to the pressure of the cardiac cycle, thereby improving the medical effect of the heart valve.

[0085] Optionally, the material of the inner skirt 3 is pericardium material.

[0086] The inner skirt 3 is mainly used to prevent lateral leakage of blood flow. The material of the inner skirt 3 is pericardial material. Since the pericardial material has better tolerance to the pressure of the cardiac cycle, it can improve the effect of preventing lateral leakage of blood flow.

[0087] In this embodiment, the material of the inner skirt is pericardial material, which can improve the effect of preventing side leakage of blood flow.

[0088] Optionally, the material of the first overlapping slices is pericardial material;

[0089] The material of the second overlapping slice is pericardial material;

[0090] The material of the third overlapping slice is pericardial material.

[0091] The overlapping slices are mainly used to stabilize the suture of the valve leaflet 1 and the valve frame 2. The material of the first overlapping slice can be pericardial material, the material of the second overlapping slice can be pericardial material, and the material of the third overlapping slice can be pericardial material. Compared with other materials, pericardial material is very dense and tight, and has a better suture effect.

[0092] In this embodiment, the material of the first overlapping slice is pericardial material, the material of the second overlapping slice is pericardial material, and the material of the third overlapping slice is pericardial material. Because the pericardial material is very dense and tight, the suturing effect is better, thereby improving the medical effect of the heart valve.

[0093] Optionally, the material of the outer skirt 4 is polyester fiber.

[0094] Among them, polyester fiber material is more common. Polyester fiber has good wrinkle resistance and shape retention, high strength and elastic recovery ability, and is strong and durable. The outer skirt material is polyester fiber, which is thin and can withstand greater tension.

[0095] In this embodiment, since the outer skirt material is polyester fiber, the thickness is relatively thin and it can withstand a large tensile force, thereby improving the medical effect of the heart valve.

[0096] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A heart valve, characterized in that: It includes leaflets, a valve frame, an inner skirt and an outer skirt; The inner skirt abuts against the inner wall of the valve frame, and the first end of the inner skirt is sutured to the first end of the valve frame; The leaflet is arranged in the outer skirt, and the first end of the leaflet, the first end of the outer skirt and the second end of the inner skirt are sutured to the second end of the valve frame; The second end of the leaflet is inverted, and the second end of the leaflet is sutured and arranged inside the valve frame; The second end of the outer skirt is turned outward, and the second end of the outer skirt is sutured and arranged outside the valve frame; The cells of the valve frame are rhombus cells, and the upper and lower apex angles of the rhombus cells have the same shape and size; The first end of the leaflet is a triangular sawtooth that matches the size and shape of the lower vertex; The second end of the inner skirt is a triangular sawtooth that matches the size and shape of the lower vertex; The first end of the outer skirt is a triangular sawtooth that matches the size and shape of the lower vertex; The triangular sawtooth structure at the first end of the leaflet overlaps with the triangular sawtooth structure at the first end of the outer skirt, and butts with the triangular sawtooth structure at the second end of the inner skirt.

2. The heart valve according to claim 1, characterized in that The leaflet includes a first equally divided portion, a second equally divided portion, and a third equally divided portion, wherein the first equally divided portion is a suture area between the third end of the leaflet and the fourth end of the leaflet; The leaflet is sutured to the valve frame through the first bisecting portion, the second bisecting portion and the third bisecting portion.

3. The heart valve according to claim 2, characterized in that: The leaflet further comprises a first overlapping section, wherein the first overlapping section is sutured to a first equally divided portion of the leaflet, and the leaflet is sutured to the valve frame via the first overlapping section.

4. The heart valve according to claim 3, characterized in that: The valve frame includes a first positioning beam, a second positioning beam and a third positioning beam, and the valve leaf also includes a second overlapping slice and a third overlapping slice; The first positioning beam is sutured to the first equally divided portion of the leaflet through the first overlapping slice; The second positioning beam is sutured to the second equally divided portion of the leaflet through the second overlapping slice; The third positioning beam is sutured to the third equally divided portion of the leaflet through the third overlapping slice.

5. The heart valve according to claim 1, wherein: The second end of the outer skirt covers at least one cell of the valve frame, and the height of the second end of the outer skirt is less than or equal to the height of the first end of the inner skirt.

6. The heart valve according to claim 1, wherein: The material of the valve leaflet is pericardial material.

7. The heart valve according to claim 1, wherein: The material of the inner skirt is pericardium material.

8. The heart valve according to claim 4, characterized in that The material of the first overlapping slice is pericardial material; The material of the second overlapping slice is pericardial material; The material of the third overlapping slice is pericardial material.

9. The heart valve according to claim 1, wherein: The material of the outer skirt is polyester fiber.

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