Prosthetic valve prosthesis

Abstract

The artificial valve prosthesis comprises a valve body, one or more channels are formed in the valve body, the channels penetrate through the valve body, and a Tesla valve structure is arranged in each channel; in the length direction of the channel, the direction from the inflow end of the valve body to the outflow end of the valve body is the low-resistance direction of the Tesla valve structure, and the direction from the outflow end of the valve body to the inflow end of the valve body is the high-resistance direction of the Tesla valve structure. A movable part, namely a valve leaflet, in an existing artificial valve prosthesis is replaced by the channel of the Tesla valve structure, and the problems that the valve leaflet of the existing artificial valve prosthesis can generate mechanical movement, and the valve leaflet generating mechanical movement can be easily damaged due to the fatigue effect can be solved. According to the artificial valve prosthesis, due to the fact that the valve leaflet and the procedures of cutting the membrane, sewing the membrane and the like for the valve leaflet are omitted, the artificial valve prosthesis is simple in process and capable of achieving automatic batch production, and the percent of pass and the production efficiency are improved.

Description

Technical Field

[0001] This patent relates to the field of medical device technology, and specifically, to an artificial valve prosthesis. Background Art

[0002] Heart valve replacement is an effective medical treatment for valvular disease. Currently, it includes surgical replacement and interventional replacement. Regardless of the method, over time, the original replacement patient will experience structural decay of the bioprosthesis (aortic valve, pulmonary valve, mitral valve or tricuspid valve). The decay pattern includes leaflet calcification, leaflet damage, stent fracture, paravalvular leakage, etc.

[0003] Studies have reported that the average lifespan of a replacement bioprosthesis is about 10-15 years, which is related to the manufacturing process and individual differences. When the time is up, the patient needs a secondary intervention, which seriously affects the quality of life.

[0004] Even though mechanical valves have a longer lifespan, because they are made of metal and have poor biocompatibility, patients need lifelong anticoagulation treatment after implantation. In addition, the movement of the leaflets of mechanical valves is different from that of biological leaflets, and they cannot achieve the purpose of hemodynamic correction. Therefore, such valves are basically eliminated. Summary of the invention

[0005] The purpose of this patent is to provide an artificial valve prosthesis to overcome the above-mentioned defects existing in the art.

[0006] In order to achieve the above-mentioned purpose of this patent, the following technical solutions are adopted:

[0007] The present application provides an artificial valve prosthesis, comprising a valve body, wherein one or more channels are provided inside the valve body, the channels run through the valve body, and a Tesla valve structure is provided in each of the channels; wherein:

[0008] Along the length direction of the channel, from the inflow end of the valve body to the outflow end of the valve body is the low-resistance direction of the Tesla valve structure, and from the outflow end of the valve body to the inflow end of the valve body is the high-resistance direction of the Tesla valve structure.

[0009] Further, the Tesla valve structure includes a first guide unit plate, a second guide unit plate, a first protrusion and a second protrusion;

[0010] The first guide unit plate and the second guide unit plate are arranged on the inner wall of the channel opposite to each other;

[0011] A plurality of first protrusions are provided on the inner wall of the channel on the inner side of the first guide unit plate;

[0012] A plurality of second protrusions are provided on the inner wall of the channel on the inner side of the second guide unit plate;

[0013] The plurality of first protrusions and the second protrusions are arranged in cooperation with the first guide unit plate and the second guide unit plate to form the Tesla valve structure, so as to form a main channel and a plurality of branch channels connected to the main channel in the channel.

[0014] Further, the first guide unit plate includes first baffles connected in sequence, the first baffle includes a first guide plate and a first arc transition plate connected to the first guide plate, and the first guide plate of one of the two adjacent first guide unit plates is connected to the first arc transition plate of the other first guide unit plate;

[0015] The second guide unit plate comprises second baffles connected in sequence, the second baffle comprises a second guide plate and a second arc transition plate connected to the second guide plate, and the second guide plate of one of the two adjacent second guide unit plates is connected to the second arc transition plate of the other second guide unit plate;

[0016] The first protrusion is arranged on the inner wall of the channel inside each first guide unit plate, a first side channel is formed between the first protrusion and the corresponding first guide plate, a first arc transition channel is formed between the first protrusion and the corresponding first arc transition plate, a first main channel is formed between the first protrusion and the corresponding second guide plate, the first side channel is connected to the first main channel, and the first arc transition channel is connected to the first side channel and the first main channel to form a first branch channel arranged in a closed loop;

[0017] The second protrusion is arranged on the inner wall of the channel inside each second guide unit plate, a second side channel is formed between the second protrusion and the corresponding second guide plate, a second arc transition channel is formed between the second protrusion and the corresponding second arc transition plate, a second main channel is formed between the second protrusion and the corresponding first guide plate, the second side channel is connected to the second main channel, and the second arc transition channel is connected to the second side channel and the second main channel to form a second branch channel arranged in a closed loop;

[0018] The adjacent second main channels and the first main channels are connected in sequence to form the main channel;

[0019] The first branch channel and the second branch channel are distributed on both sides of the main channel along the extension direction of the main channel and are staggered with each other.

[0020] Further, the first guide plate is a straight first guide plate, the first protrusion is a rectangular first protrusion, the length direction of the rectangular first protrusion is the same as the length direction of the straight first guide plate, and the first side channel formed between the rectangular first protrusion and the straight first guide plate is a straight first side channel;

[0021] One end of the rectangular first protrusion is an arc end, and the first arc transition channel formed between the arc end and the first arc transition plate is a semi-annular first arc transition channel;

[0022] The second guide plate is a straight second guide plate, the second protrusion is a rectangular second protrusion, the length direction of the rectangular second protrusion is the same as the length direction of the straight second guide plate, and the second side channel formed between the rectangular second protrusion and the straight second guide plate is a straight second side channel;

[0023] One end of the rectangular second convex block is an arc end, and the second arc transition channel formed between the arc end and the second arc transition plate is a semi-annular second arc transition channel;

[0024] The other end of the rectangular first protrusion is a pointed end, and the first main channel formed between the inclined surface of the pointed end and the corresponding straight second guide plate is a straight first main channel;

[0025] The other end of the rectangular second convex block is a pointed end, and the second main channel formed between the inclined surface of the pointed end and the corresponding straight-shaped first guide plate is a straight-shaped second main channel;

[0026] The adjacent straight-line second main channels and the straight-line first main channels are connected in sequence to form the main channel.

[0027] Further, an inlet end transition plate is provided on the inner wall of the channel near the inlet end of the valve body, the inlet end transition plate is connected to the adjacent first arc transition plate, and a liquid inlet transition channel is formed between the inlet end transition plate and the corresponding second straight-line guide plate, and the liquid inlet transition channel is connected to the main channel;

[0028] An outflow end transition plate is provided on the inner wall of the channel near the outflow end of the valve body, and the outflow end transition plate is connected to the adjacent straight first guide plate. A liquid outlet transition channel is formed between the outflow end transition plate and the corresponding straight second guide plate, and the liquid outlet transition channel is connected to the main channel.

[0029] Further, the first guide plate is an arc-shaped first guide plate, the first protrusion is an arc-shaped first protrusion, the outer convex arc surface of the arc-shaped first protrusion can cover the arc-shaped first guide plate and the first arc transition plate, and the first side channel formed between the arc-shaped first protrusion and the arc-shaped first guide plate is an arc-shaped first side channel;

[0030] The first arc transition channel formed between the arc-shaped first protrusion and the first arc transition plate is a semi-annular first arc transition channel;

[0031] The second guide plate is an arc-shaped second guide plate, the second protrusion is an arc-shaped second protrusion, the outer convex arc surface of the arc-shaped second protrusion can cover the arc-shaped second guide plate and the second arc transition plate, and the second side channel formed between the arc-shaped second protrusion and the arc-shaped second guide plate is an arc-shaped second side channel;

[0032] The second arc transition channel formed between the arc-shaped second protrusion and the second arc transition plate is a semi-annular second arc transition channel;

[0033] The surface of the arc-shaped first convex block corresponding to the arc-shaped second guide plate is an inwardly concave arc-shaped surface, and the first main channel formed between the inwardly concave arc-shaped surface and the arc-shaped second guide plate is an arc-shaped first main channel;

[0034] The surface of the arc-shaped second convex block corresponding to the arc-shaped first guide plate is a concave arc-shaped surface, and the second main channel formed between the concave arc-shaped surface and the arc-shaped first guide plate is an arc-shaped second main channel;

[0035] The adjacent arc-shaped second main channels and the arc-shaped first main channels are connected in sequence to form the main channel.

[0036] Further, an inlet end transition plate is provided on the inner wall of the channel near the inlet end of the valve body, the inlet end transition plate is connected to the adjacent arc-shaped first guide plate, and a liquid inlet transition channel is formed between the inlet end transition plate and the corresponding second arc transition plate, and the liquid inlet transition channel is connected to the main channel;

[0037] An outflow end transition plate is provided on the inner wall of the channel near the outflow end of the valve body, and the outflow end transition plate is connected to the adjacent second arc transition plate. A liquid outlet transition channel is formed between the outflow end transition plate and the corresponding arc-shaped first guide plate, and the liquid outlet transition channel is connected to the main channel.

[0038] Furthermore, an inflow hole is provided on the end surface of the inflow end of the valve body, and an outflow hole is provided on the end surface of the outflow end of the valve body;

[0039] An inflow end conical surface is arranged in the hole wall of the inflow hole, and the inflow hole is connected with the liquid inlet transition channel through the inflow end conical surface;

[0040] An outflow end conical surface is arranged in the hole wall of the outflow hole, and the outflow hole is connected with the liquid inlet transition channel through the outflow end conical surface;

[0041] An inflow end connection portion is formed between the hole wall of the inflow hole and the side wall of the valve body;

[0042] An outflow end connecting portion is formed between the hole wall of the outflow hole and the side wall of the valve body.

[0043] Further, an optimized hole is provided inside the valve body;

[0044] Along the circumferential direction of the valve body, the interior of the valve body located on both sides of the channel is a hollow structure.

[0045] Furthermore, it also includes a frame, a transition layer is provided between the valve body and the frame, the valve body is connected to the frame through the transition layer, or the valve body is directly connected to the frame by solidification.

[0046] By adopting the above technical solution, this patent has the following beneficial effects:

[0047] The present application provides a channel with a Tesla valve structure inside the valve body to replace the movable parts, i.e., leaflets, inside the existing artificial valve prosthesis. As a result, the artificial valve prosthesis of the present application has no movable parts inside. Without movable parts, there is no mechanical movement, and without mechanical movement, there is no problem of fatigue effect. This can solve the problem that the existing artificial valve prosthesis, due to the presence of leaflets, the leaflets will produce mechanical movement, and the leaflets that produce mechanical movement will be easily damaged due to fatigue effect.

[0048] The artificial valve prosthesis of the present application omits the valve leaflets and the processes of cutting and sewing the film for the valve leaflets. Therefore, the artificial valve prosthesis of the present application has a simple process and can be automatically mass-produced, thereby improving the qualification rate and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the specific implementation methods of this patent or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of this patent. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0050] Figure 1A top view showing a channel inside the valve body;

[0051] Figure 2 A cross-sectional view showing a channel inside the valve body;

[0052] Figure 3 It is a cross-sectional view of the first Tesla valve structure;

[0053] Figure 4 Schematic diagram of the flow direction of the fluid inside the first Tesla valve structure when the fluid flows in from the low resistance direction of the first Tesla valve structure;

[0054] Figure 5 Schematic diagram of the flow direction of the fluid inside the first Tesla valve structure when the fluid flows in from the high resistance direction of the first Tesla valve structure;

[0055] Figure 6 Schematic diagram of the first Tesla valve structure, in which the angle between the inlet end transition plate and the first arc transition plate is α;

[0056] Figure 7 is a cross-sectional view of the second Tesla valve structure;

[0057] Figure 8 is a schematic diagram of the flow direction of the fluid inside the second Tesla valve structure when the fluid flows in from the low resistance direction of the second Tesla valve structure;

[0058] Fig. 9 is a schematic diagram of the flow direction of the fluid inside the second Tesla valve structure when the fluid flows in from the high resistance direction of the second Tesla valve structure;

[0059] Fig.10 Schematic diagram of the second Tesla valve structure, in which the angle between the outer convex arc surface and the inner concave arc surface of the arc-shaped first protrusion is β;

[0060] Fig.11 Schematic diagram of the second Tesla valve structure, in which the angle between the outer convex arc surface and the inner concave arc surface of the arc-shaped second protrusion is β;

[0061] Fig.12 It is a schematic diagram of the structure in which the frame and the valve body are connected through a transition layer;

[0062] Fig.13 A top view showing three channels inside the valve body;

[0063] Fig.14 A cross-sectional view showing three channels inside the valve body;

[0064] Fig.15 This is a schematic diagram showing four channels inside the valve body.

[0065] Figure numerals: 1-frame; 2-valve body; 3-channel; 4-Tesla valve structure; 21-inflow end; 22-outflow end; 5-first guide unit plate; 6-second guide unit plate; 7-first protrusion; 8-second protrusion; 9-main channel; 10-branch channel; 51-first baffle; 52-first guide plate; 53-first circular arc transition plate; 61-second baffle; 62-second guide plate; 63-second circular arc transition plate; 11-first side Channel; 12-first arc transition channel; 13-first main channel; 14-first branch channel; 8-second protrusion; 15-second side channel; 16-second arc transition channel; 17-second main channel; 18-second branch channel; 521-straight first guide plate; 71-rectangular first protrusion; 111-straight first side channel; 19-arc end; 121-semi-annular first arc transition channel; 621-straight second guide plate; 81 - rectangular second convex block; 151- straight second side channel; 161- semi-circular second arc transition channel; 20- pointed end; 201- inclined surface; 131- straight first main channel; 171- straight second main channel; 23- inflow end transition plate; 24- inflow transition channel; 25- outflow end transition plate; 26- outflow transition channel; 522- arc-shaped first guide plate; 72- arc-shaped first convex block; 27- outer convex arc surface; 112- arc shaped first side channel; 622-arc-shaped second guide plate; 82-arc-shaped second protrusion; 152-arc-shaped second side channel; 33-concave arc-shaped surface; 132-arc-shaped first main channel; 172-arc-shaped second main channel; 211-inflow hole; 221-outflow hole; 212-inflow end conical surface; 222-outflow end conical surface; 28-inflow end connecting part; 29-outflow end connecting part; 30-optimized hole; 31-hollow structure; 32-transition layer. DETAILED DESCRIPTION

[0066] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] like Figure 1 and Figure 2 As shown, the artificial valve prosthesis of the present application includes a valve body 2, wherein one or more channels 3 are provided inside the valve body 2, and the channels 3 penetrate the valve body 2 along the length direction of the valve body 2, and a Tesla valve structure 4 is provided in each channel 3; wherein,

[0069] Along the length direction of the channel 3, from the inflow end 21 of the valve body 2 to the outflow end 22 of the valve body 2 is the low-resistance direction of the Tesla valve structure 4, and from the outflow end 22 of the valve body 2 to the inflow end 21 of the valve body 2 is the high-resistance direction of the Tesla valve structure 4.

[0070] The present application arranges a Tesla valve structure 4 in the channel 3 inside the valve body 2 so that the direction from the inflow end 21 of the valve body 2 to the outflow end 22 of the valve body 2 is the low-resistance direction of the Tesla valve structure 4, and the direction from the outflow end 22 of the valve body 2 to the inflow end 21 of the valve body 2 is the high-resistance direction of the Tesla valve structure 4, thereby converting the channel 3 into a unidirectional passage from the inflow end 21 of the valve body 2 to the outflow end 22 of the valve body 2.

[0071] The present application provides a channel 3 with a Tesla valve structure 4 inside the valve body 2 to replace the movable parts, i.e., leaflets, inside the existing artificial valve prosthesis. As a result, the artificial valve prosthesis of the present application has no movable parts inside. Without movable parts, there is no mechanical movement, and without mechanical movement, there is no problem of fatigue effect. This can solve the problem that the existing artificial valve prosthesis has mechanical movement (mechanical movement here refers to the opening and closing of the leaflets) due to the presence of leaflets, and the leaflets that produce mechanical movement are easily damaged due to fatigue effect.

[0072] The artificial valve prosthesis of the present application omits the valve leaflets and the processes of cutting and sewing the film for the valve leaflets. Therefore, the artificial valve prosthesis of the present application has a simple process and can be automatically mass-produced, thereby improving the qualification rate and production efficiency.

[0073] Specifically, continue to refer to Figure 2 , the Tesla valve structure 4 includes a first guide unit plate 5, a second guide unit plate 6, a first protrusion 7 and a second protrusion 8;

[0074] The first guide unit plate 5 and the second guide unit plate 6 are arranged on the inner wall of the channel 3 opposite to each other;

[0075] A plurality of first protrusions 7 are provided on the inner wall of the channel 3 inside the first guide unit plate 5;

[0076] A plurality of second protrusions 8 are provided on the inner wall of the channel 3 inside the second guide unit plate 6;

[0077] A plurality of first protrusions 7 and second protrusions 8 are arranged in cooperation with the first guide unit plate 5 and the second guide unit plate 6 to form a Tesla valve structure 4 to form a main channel 9 in the channel 3 and a plurality of branch channels 10 connected to the main channel 9.

[0078] Specifically, continue to refer to Figure 2 The first guide unit plate 5 includes first baffles 51 connected in sequence, the first baffle 51 includes a first guide plate 52 and a first arc transition plate 53 connected to the first guide plate 52, and two adjacent first guide unit plates 5, the first guide plate 52 of one first guide unit plate 5 is connected to the first arc transition plate 53 of the other first guide unit plate 5;

[0079] The second guide unit plate 6 includes second baffles 61 connected in sequence, the second baffle 61 includes a second guide plate 62 and a second arc transition plate 63 connected to the second guide plate 62, and two adjacent second guide unit plates 6, the second guide plate 62 of one second guide unit plate 6 is connected to the second arc transition plate 63 of the other second guide unit plate 6;

[0080] The first protrusion 7 is arranged on the inner wall of the channel 3 on the inner side of each first guide unit plate 5, a first side channel 11 is formed between the first protrusion 7 and the corresponding first guide plate 52, a first arc transition channel 12 is formed between the first protrusion 7 and the corresponding first arc transition plate 53, a first main channel 13 is formed between the first protrusion 7 and the corresponding second guide plate 62, the first side channel 11 is connected to the first main channel 13, and the first arc transition channel 12 is connected to the first side channel 11 and the first main channel 13 to form a first branch channel 14 arranged in a closed loop;

[0081] The second protrusion 8 is arranged on the inner wall of the channel 3 on the inner side of each second guide unit plate 6, a second side channel 15 is formed between the second protrusion 8 and the corresponding second guide plate 62, a second arc transition channel 16 is formed between the second protrusion 8 and the corresponding second arc transition plate 63, a second main channel 17 is formed between the second protrusion 8 and the corresponding first guide plate 52, the second side channel 15 is connected with the second main channel 17, and the second arc transition channel 16 is connected with the second side channel 15 and the second main channel 17 to form a second branch channel 18 arranged in a closed loop;

[0082] The adjacent second main channel 17 and the first main channel 13 are connected in sequence to form the main channel 9. Figure 2 The main channel 9 is shown in Figure 2 It is indicated by a black dotted line; Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig. 9 The main channel 9 and Figure 2 The black dashed main channel 9 is the same as Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig. 9 The main channel 9 is omitted and not marked;

[0083] The first branch channel 14 and the second branch channel 18 are distributed on both sides of the main channel 9 along the extension direction of the main channel 9 and are staggered with each other.

[0084] The Tesla valve structure 4 of the present application has two forms, which are introduced below respectively:

[0085] The first form: Figure 3 , Figure 4 and Figure 5 As shown, the first guide plate 52 is a linear first guide plate 521, the first protrusion 7 is a rectangular first protrusion 71, the length direction of the rectangular first protrusion 71 is the same as the length direction of the linear first guide plate 521, and the first side channel 11 formed between the rectangular first protrusion 71 and the linear first guide plate 521 is a linear first side channel 111;

[0086] One end of the rectangular first protrusion 71 is an arc end 19, and the first arc transition channel 12 formed between the arc end 19 and the first arc transition plate 53 is a semi-annular first arc transition channel 121;

[0087] The second guide plate 62 is a linear second guide plate 621, the second protrusion 8 is a rectangular second protrusion 81, the length direction of the rectangular second protrusion 81 is the same as the length direction of the linear second guide plate 621, and the second side channel 15 formed between the rectangular second protrusion 81 and the linear second guide plate 621 is a linear second side channel 151;

[0088] One end of the rectangular second protrusion 81 is an arc end 19, and the second arc transition channel 16 formed between the arc end 19 and the second arc transition plate 63 is a semi-annular second arc transition channel 161;

[0089] The other end of the rectangular first protrusion 71 is a pointed end 20, and the first main channel 13 formed between the inclined surface 201 of the pointed end 20 and the corresponding straight second guide plate 621 is a straight first main channel 131;

[0090] The other end of the rectangular second protrusion 81 is a pointed end 20, and the second main channel 17 formed between the inclined surface 201 of the pointed end 20 and the corresponding straight first guide plate 521 is a straight second main channel 171;

[0091] Adjacent straight-line second main channels 171 and straight-line first main channels 131 are connected in sequence to form a main channel 9 .

[0092] Specifically, an inlet transition plate 23 is provided on the inner wall of the channel 3 near the inlet end 21 of the valve body 2, and the inlet transition plate 23 is connected to the adjacent first arc transition plate 53, and a liquid inlet transition channel 24 is formed between the inlet transition plate 23 and the corresponding straight second guide plate 621, and the liquid inlet transition channel 24 is connected to the main channel 9;

[0093] An outflow end transition plate 25 is provided on the inner wall of the channel 3 near the outflow end 22 of the valve body 2. The outflow end transition plate 25 is connected to the adjacent straight first guide plate 521. A liquid outlet transition channel 26 is formed between the outflow end transition plate 25 and the corresponding straight second guide plate 621. The liquid outlet transition channel 26 is connected to the main channel 9.

[0094] By providing the liquid inlet transition channel 24 , the fluid can more smoothly enter the main channel 9 from the inlet end 21 of the valve body 2 through the liquid inlet transition channel 24 .

[0095] By providing the liquid outlet transition channel 26 , the fluid entering the main channel 9 can flow out more smoothly through the liquid outlet transition channel 26 .

[0096] Combined with the first Tesla valve structure 4 mentioned above in this application, refer to Figure 3 and Figure 4 , for ease of description, Figure 3 and Figure 4 The black solid arrows in the figure indicate the flow direction of the fluid in the linear first main channel 131 and the linear second main channel 171. Figure 3 and Figure 4The black dotted arrows in the figure indicate the flow direction of the fluid in the first branch channel 14 and the second branch channel 18. When the fluid flows in from the low resistance direction of the Tesla valve structure 4 (i.e., the inflow end 21 of the valve body 2), the fluid entering the linear first main channel 131 is divided into two by the diversion effect of the rectangular first protrusion 71, wherein a part of the fluid enters the first branch channel 14, and the other part of the fluid continues to flow along the linear first main channel 131. Due to the existence of the semi-annular first arc transition channel 121, the fluid has a certain resistance when passing through the semi-annular first arc transition channel 121 to enter the first branch channel 14. Therefore, the linear first main channel 131 is Only a small part of the fluid in the channel 131 can enter the first branch channel 14 through the semi-annular first arc transition channel 121. The fluid entering the first branch channel 14 passes through the straight first side channel 111 and re-enters the straight first main channel 131, and merges with the fluid in the straight first main channel 131 again. During the merging process, since the component of the flow direction of the fluid in the straight first side channel 111 is consistent with the flow direction of the fluid in the straight first main channel 131, there is not much obstruction in the merging process between the fluid in the straight first side channel 111 and the fluid in the straight first main channel 131, and there is almost no energy loss of the fluid.

[0097] After the fluid in the linear first side channel 111 merges with the fluid in the linear first main channel 131, it enters the linear second main channel 171. Under the diversion effect of the rectangular second protrusion 81, the fluid in the linear second main channel 171 is divided into two parts, one part of the fluid enters the second branch channel 18, and the other part of the fluid continues to flow along the linear second main channel 171. Due to the existence of the semi-annular second arc transition channel 161, the fluid has a certain resistance when passing through the semi-annular second arc transition channel 161 to enter the second branch channel 18. Therefore, the fluid in the linear second main channel 171 Only a small part of the fluid can enter the second branch channel 18 through the semi-annular second arc transition channel 161. The fluid entering the second branch channel 18 passes through the linear second side channel 151 and re-enters the linear second main channel 171, and merges with the fluid in the linear second main channel 171 again. During the merging process, the component of the flow direction of the fluid in the linear second side channel 151 is consistent with the flow direction of the fluid in the linear second main channel 171. Therefore, there is not much obstruction during the merging process between the fluid in the linear second side channel 151 and the fluid in the linear second main channel 171, and there is almost no energy loss in the fluid.

[0098] The fluid moves forward alternately and repeatedly according to the above-mentioned rules, and finally the fluid entering from the inflow end 21 of the valve body 2 flows out from the outflow end 22 of the valve body 2 smoothly.

[0099] refer to Figure 5 , for ease of description, Figure 5 The black solid arrows in the figure indicate the flow direction of the fluid in the linear first main channel 131 and the linear second main channel 171. Figure 5 The black dotted arrows in the figure indicate the flow direction of the fluid in the first branch channel 14 and the second branch channel 18. When the fluid flows in from the high-resistance direction of the Tesla valve structure 4 (i.e., the outflow end 22 of the valve body 2), the fluid entering the linear second main channel 171 is divided into two by the diversion effect of the rectangular second protrusion 81, wherein a part of the fluid enters the second branch channel 18 through the linear second side channel 151, and another part of the fluid continues to flow along the linear second main channel 171. The fluid entering the second branch channel 18 passes through the semi-annular second arc transition channel 161 and re-enters the linear second main channel 171. Due to the existence of the semi-annular second arc transition channel 161, the fluid in the straight second side channel 151 will collide with the inner wall of the second arc transition plate 63 during the process of entering the semi-annular second arc transition channel 161, thereby losing a considerable amount of energy. In addition, the semi-annular second arc transition channel 161 will adjust the flow direction of the fluid in the straight second side channel 151, so that the component of the flow direction of the fluid that passes through the semi-annular second arc transition channel 161 and re-enters the straight second main channel 171 is opposite to the flow direction of the fluid in the straight second main channel 171. Therefore, the energy of the fluids will offset each other during the merging process.

[0100] After merging with the fluid in the linear second main channel 171, the fluid in the second branch channel 18 enters the linear first main channel 131. Under the diversion effect of the rectangular first protrusion 71, the fluid in the linear first main channel 131 is divided into two, one part of the fluid enters the first branch channel 14 through the linear first side channel 111, and the other part of the fluid continues to flow along the linear first main channel 131. The fluid in the first branch channel 14 re-merges into the linear first main channel 131 through the semi-annular first arc transition channel 121. Due to the presence of the semi-annular first arc transition channel 121 In the process of the fluid in the linear first side channel 111 entering the semi-annular first arc transition channel 121, the fluid in the linear first side channel 111 will collide with the inner wall of the first arc transition plate 53, thereby losing a considerable amount of energy. In addition, the semi-annular first arc transition channel 121 will adjust the flow direction of the fluid in the linear first side channel 111, so that the component of the flow direction of the fluid that passes through the semi-annular first arc transition channel 121 and re-enters the linear first main channel 131 is opposite to the flow direction of the fluid in the linear first main channel 131. Therefore, in the process of fluid merging, the fluid energies cancel each other out.

[0101] The fluid moves forward alternately and repeatedly according to the above-mentioned rule, and finally the fluid entering from the outflow end 22 of the valve body 2 cannot flow out from the inflow end 21 of the valve body 2 .

[0102] It should be noted that: for the above-mentioned first Tesla valve structure 4, when the fluid flows in from the high-resistance direction of the Tesla valve structure 4 (i.e., the outflow end 22 of the valve body 2), the more second branch channels 18 and first branch channels 14 the fluid alternately passes through, the less the remaining energy of the fluid in the main channel 9, and the greater the resistance to the flow of the fluid along the main channel 9.

[0103] In summary, under the action of the above-mentioned Tesla valve structure 4, a one-way conduction from the inflow end 21 of the valve body 2 to the outflow end 22 of the valve body 2 is achieved. Thus, through the one-way conduction Tesla valve structure 4, the fluid can flow in the correct direction and the backflow of the fluid can be prevented.

[0104] Preferably, if Figure 6 As shown, the angle between the inlet transition plate 23 and the first arc transition plate 53 is defined as α, 30°≤α≤60°, thereby ensuring the normal flow of the fluid in the Tesla valve structure 4.

[0105] The second form: Figure 7 , Figure 8 and Fig. 9As shown, the first guide plate 52 is an arc-shaped first guide plate 522, the first protrusion 7 is an arc-shaped first protrusion 72, the outer convex arc surface 27 of the arc-shaped first protrusion 72 can cover the arc-shaped first guide plate 522 and the first arc transition plate 53, and the first side channel 11 formed between the arc-shaped first protrusion 72 and the arc-shaped first guide plate 522 is an arc-shaped first side channel 112;

[0106] The first arc transition channel 12 formed between the arc-shaped first protrusion 72 and the first arc transition plate 53 is a semi-annular first arc transition channel 121;

[0107] The second guide plate 62 is an arc-shaped second guide plate 622, the second protrusion 8 is an arc-shaped second protrusion 82, the outer convex arc surface 27 of the arc-shaped second protrusion 82 can cover the arc-shaped second guide plate 622 and the second arc transition plate 63, and the second side channel 15 formed between the arc-shaped second protrusion 82 and the arc-shaped second guide plate 622 is an arc-shaped second side channel 152;

[0108] The second arc transition channel 16 formed between the arc-shaped second protrusion 82 and the second arc transition plate 63 is a semi-annular second arc transition channel 161;

[0109] The arc-shaped first protrusion 72, the surface corresponding to the arc-shaped second guide plate 622 is a concave arc-shaped surface 33, and the first main channel 13 formed between the concave arc-shaped surface 33 and the arc-shaped second guide plate 622 is an arc-shaped first main channel 132;

[0110] The arc-shaped second protrusion 82 corresponds to the surface of the arc-shaped first guide plate 522 as an inwardly concave arc-shaped surface 33. The second main channel 17 formed between the inwardly concave arc-shaped surface 33 and the arc-shaped first guide plate 522 is an arc-shaped second main channel 172.

[0111] Adjacent arc-shaped second main channels 172 and arc-shaped first main channels 132 are connected in sequence to form a main channel 9 .

[0112] Specifically, an inlet transition plate 23 is provided on the inner wall of the channel 3 near the inlet end 21 of the valve body 2, and the inlet transition plate 23 is connected to the adjacent arc-shaped first guide plate 522, and a liquid inlet transition channel 24 is formed between the inlet transition plate 23 and the corresponding second arc transition plate 63, and the liquid inlet transition channel 24 is connected to the main channel 9;

[0113] An outflow end transition plate 25 is provided on the inner wall of the channel 3 near the outflow end 22 of the valve body 2. The outflow end transition plate 25 is connected to the adjacent second arc transition plate 63. A liquid outflow transition channel 26 is formed between the outflow end transition plate 25 and the corresponding arc-shaped first guide plate 522. The liquid outflow transition channel 26 is connected to the main channel 9.

[0114] By providing the liquid inlet transition channel 24 , the fluid can more smoothly enter the main channel 9 from the inlet end 21 of the valve body 2 through the liquid inlet transition channel 24 .

[0115] By providing the liquid outlet transition channel 26 , the fluid entering the main channel 9 can flow out more smoothly through the liquid outlet transition channel 26 .

[0116] Combined with the second Tesla valve structure 4 mentioned above in this application, refer to Figure 7 and Figure 8 , for ease of description, Figure 7 and Figure 8 The black solid arrows in the figure indicate the flow direction of the fluid in the arc-shaped first main channel 132 and the arc-shaped second main channel 172. Figure 7 and Figure 8 The black dotted arrows in the figure indicate the flow direction of the fluid in the first branch channel 14 and the second branch channel 18. When the fluid flows in from the low resistance direction of the Tesla valve structure 4 (i.e., the inflow end 21 of the valve body 2), the fluid entering the arc-shaped second main channel 172 is divided into two by the diversion effect of the arc-shaped second protrusion 82, wherein a part of the fluid enters the second branch channel 18 through the semi-annular second arc transition channel 161, and another part of the fluid continues to flow along the arc-shaped second main channel 172. Due to the existence of the semi-annular second arc transition channel 161, the fluid passes through the semi-annular second arc transition channel 161 to enter the second branch channel 18 with a certain resistance. Therefore, only a small part of the fluid in the arc-shaped second main channel 172 can enter the second branch channel 18 through the semi-annular second arc transition channel 161. The fluid entering the second branch channel 18 passes through the arc-shaped second side channel 152 and re-enters the arc-shaped second main channel 172 to merge with the fluid in the arc-shaped second main channel 172 again. During the merging process, since the component of the flow direction of the fluid in the arc-shaped second side channel 152 is consistent with the flow direction of the fluid in the arc-shaped second main channel 172, there is not much obstruction in the merging process of the fluid in the arc-shaped second side channel 152 and the fluid in the arc-shaped second main channel 172, and there is almost no energy loss of the fluid.

[0117] After the fluid in the arc-shaped second side channel 152 merges with the fluid in the arc-shaped second main channel 172, it enters the arc-shaped first main channel 132. Under the diversion effect of the arc-shaped first protrusion 72, the fluid in the arc-shaped first main channel 132 is divided into two, one part of the fluid enters the first branch channel 14 through the semi-annular first arc transition channel 121, and the other part of the fluid continues to flow along the arc-shaped first main channel 132. Due to the existence of the semi-annular first arc transition channel 121, the fluid has a certain resistance when passing through the semi-annular first arc transition channel 121 to enter the first branch channel 14. Therefore, the arc-shaped first main channel 1 Of the fluid in the first arc transition channel 121, only a small portion of the fluid can enter the first branch channel 14 through the semi-annular first arc transition channel 121. The fluid entering the first branch channel 14 passes through the arc-shaped first side channel 112 and re-enters the arc-shaped first main channel 132 to merge with the fluid in the arc-shaped first main channel 132 again. During the merging process, since the component of the flow direction of the fluid in the arc-shaped first side channel 112 is consistent with the flow direction of the fluid in the arc-shaped first main channel 132, there is not much obstruction in the merging process between the fluid in the arc-shaped first side channel 112 and the fluid in the arc-shaped first main channel 132, and there is almost no energy loss in the fluid.

[0118] The fluid moves forward alternately and repeatedly according to the above-mentioned rules, and finally the fluid entering from the inflow end 21 of the valve body 2 flows out from the outflow end 22 of the valve body 2 smoothly.

[0119] refer to Fig. 9 , for ease of description, Fig. 9 The black solid arrows in the figure indicate the flow direction of the fluid in the arc-shaped first main channel 132 and the arc-shaped second main channel 172. Fig. 9The black dotted arrows in the figure indicate the flow direction of the fluid in the first branch channel 14 and the second branch channel 18. When the fluid flows in from the high-resistance direction of the Tesla valve structure 4 (i.e., the outflow end 22 of the valve body 2), the fluid entering the arc-shaped first main channel 132 is divided into two by the diversion effect of the arc-shaped first protrusion 72, wherein a part of the fluid enters the first branch channel 14 through the arc-shaped first side channel 112, and another part of the fluid continues to flow along the arc-shaped first main channel 132. The fluid entering the first branch channel 14 passes through the semi-annular first arc transition channel 121 and re-enters the arc-shaped first main channel 132. Due to the existence of the semi-annular first arc transition channel 121, the fluid in the arc-shaped first side channel 112 will collide with the inner wall of the first arc transition plate 53 during the process of entering the semi-annular first arc transition channel 121, thereby losing a considerable amount of energy. In addition, the semi-annular first arc transition channel 121 will adjust the flow direction of the fluid in the arc-shaped first side channel 112, so that the component of the flow direction of the fluid that passes through the semi-annular first arc transition channel 121 and re-enters the arc-shaped first main channel 132 is opposite to the flow direction of the fluid in the arc-shaped first main channel 132. Therefore, during the process of fluid merging, the energy of the fluids will offset each other.

[0120] After merging with the fluid in the arc-shaped first main channel 132, the fluid in the first branch channel 14 enters the arc-shaped second main channel 172. Under the diversion effect of the arc-shaped second protrusion 82, the fluid in the arc-shaped second main channel 172 is divided into two parts, one part of the fluid enters the second branch channel 18 through the arc-shaped second side channel 152, and the other part of the fluid continues to flow along the arc-shaped second main channel 172. The fluid in the second branch channel 18 re-merges into the arc-shaped second main channel 172 through the semi-annular second circular arc transition channel 161. Due to the existence of the semi-annular second circular arc transition channel 161, When the fluid in the arc-shaped second side channel 152 enters the semi-annular second arc transition channel 161, the fluid in the arc-shaped second side channel 152 will collide with the inner wall of the second arc transition plate 63, thereby losing a considerable amount of energy. In addition, the semi-annular second arc transition channel 161 will adjust the flow direction of the fluid in the arc-shaped second side channel 152, so that the component of the flow direction of the fluid that passes through the semi-annular second arc transition channel 161 and re-enters the arc-shaped second main channel 172 is opposite to the flow direction of the fluid in the arc-shaped second main channel 172. Therefore, during the process of fluid merging, the fluid energies cancel each other out.

[0121] The fluid moves forward alternately and repeatedly according to the above-mentioned rule, and finally the fluid entering from the outflow end 22 of the valve body 2 cannot flow out from the inflow end 21 of the valve body 2 .

[0122] It should be noted that: for the above-mentioned second Tesla valve structure 4, when the fluid flows in from the high-resistance direction of the Tesla valve structure 4 (i.e., the outflow end 22 of the valve body 2), the more first branch channels 14 and second branch channels 18 the fluid alternately passes through, the less the remaining energy of the fluid in the main channel 9, and the greater the resistance to the flow of the fluid along the main channel 9.

[0123] In summary, under the action of the above-mentioned Tesla valve structure 4, a one-way conduction from the inflow end 21 of the valve body 2 to the outflow end 22 of the valve body 2 is achieved. Thus, through the one-way conduction Tesla valve structure 4, the fluid can flow in the correct direction and the backflow of the fluid can be prevented.

[0124] Preferably, if Fig.10 As shown, one of the angles between the convex arc surface 27 and the concave arc surface 33 of the arc-shaped first protrusion 72 is defined as β, 30°≤β≤60°, and the other angle is defined as γ, 110°≤γ≤150°, thereby ensuring the normal flow of fluid in the Tesla valve structure 4.

[0125] Preferably, if Fig.11 As shown, one of the angles between the convex arc surface 27 and the concave arc surface 33 of the arc-shaped second protrusion 82 is defined as β, 30°≤β≤60°, and the other angle is defined as γ, 110°≤γ≤150°, thereby ensuring the normal flow of fluid in the Tesla valve structure 4.

[0126] Specifically, refer to Figure 2 and Figure 7 As shown, an inflow hole 211 is provided on the end surface of the inflow end 21 of the valve body 2, and an outflow hole 221 is provided on the end surface of the outflow end 22 of the valve body 2;

[0127] An inlet end conical surface 212 is provided in the hole wall of the inlet hole 211, and the inlet hole 211 is connected with the liquid inlet transition channel 24 through the inlet end conical surface 212;

[0128] An outflow end conical surface 222 is provided in the hole wall of the outflow hole 221, and the outflow hole 221 is connected with the liquid outflow transition channel 26 through the outflow end conical surface 222;

[0129] An inflow end connecting portion 28 is formed between the hole wall of the inflow hole 211 and the side wall of the valve body 2;

[0130] An outflow end connecting portion 29 is formed between the hole wall of the outflow hole 221 and the side wall of the valve body 2 .

[0131] An inflow end conical surface 212 is provided in the inflow hole 211, and an outflow end conical surface 222 is provided in the outflow hole 221, thereby making the fluid enter the liquid inlet transition channel 24 or flow out of the liquid outlet transition channel 26 more smoothly.

[0132] At the same time, the inflow connection part 28 and the outflow connection part 29 at both ends of the valve body 2 can be used to connect with other adjacent blood circulation tissues, such as arterial blood vessels or ventricular outflow tracts, etc., depending on the implantation site.

[0133] Specifically, the valve body 2 is provided with an optimized hole 30 inside. For the present application, the valve body 2, the first convex block 7 and the second convex block 8 are all provided with the optimized hole 30;

[0134] Along the circumferential direction of the valve body 2 , the interior of the valve body 2 located on both sides of the channel 3 is a hollow structure 31 .

[0135] By optimizing the hole 30 and the hollow structure 31 , the weight of the artificial valve prosthesis of the present application can be reduced and better compliance performance can be achieved.

[0136] The valve body 2 is made of a polymer material, such as medical silicone, polyurethane or other polymer materials.

[0137] The valve body 2 is manufactured by 3D printing or one-piece molding, and can be mass-produced automatically to improve efficiency and qualification rate.

[0138] Specifically, Fig.12 As shown, it also includes a frame 1 , a transition layer 32 is provided between the valve body 2 and the frame 1 , the valve body 2 is connected to the frame 1 through the transition layer 32 , or the valve body 2 is directly connected to the frame 1 by curing.

[0139] Preferably, the transition layer 32 can be made of materials such as medical viscose and gauze. The main functions of the transition layer 32 are: first, to connect and fix the frame 1 and the valve body 2; second, to seal and prevent paravalvular leakage.

[0140] The frame 1 is a relatively rigid body, and the material may be metal or non-metal. After being implanted into the human body, it plays the role of anchoring the entire artificial valve prosthesis and protecting the valve body 2 .

[0141] Since the artificial valve prosthesis of the present application does not have valve leaflets, the length and diameter of the frame 1 and the length and diameter of the valve body 2 can be flexibly set to meet the requirements of different patients for the size of the artificial valve prosthesis.

[0142] It should be noted that the fluid mentioned in this application includes blood.

[0143] In actual use, the artificial valve prosthesis of the present application can have one or more channels 3 inside the valve body 2 according to the actual use needs of the patient. By changing the number of channels 3 and coordinating the Tesla valve structure 4 in each channel 3, the fluid flow rate through the artificial valve prosthesis of the present application can ultimately reach the required flow rate value, thereby meeting the use needs of different patients. Therefore, the artificial valve prosthesis of the present application has a wider range of applications.

[0144] For the present application, there is no specific limit on the number of channels 3 inside the valve body 2. When one channel 3 is included, the thickness of the valve body 2 needs to be set large enough to achieve a certain flow rate.

[0145] like Figure 1 and Figure 2 As shown, an artificial valve prosthesis is shown in which the interior of the valve body 2 includes a channel 3. When the number of the channel 3 is one, the channel 3 is preferably arranged in the middle part of the valve body 2, and the interior of the valve body 2 located on both sides of the channel 3 is a hollow structure 31.

[0146] like Fig.13 and Fig.14 As shown, an artificial valve prosthesis is shown, wherein the valve body 2 includes three channels 3, the three channels 3 are evenly distributed along the circumference of the valve body 2, and the interior of the valve body 2 between two adjacent channels 3 is a hollow structure 31. The interior of the valve body 2 is also provided with an optimized hole 30.

[0147] like Fig.15 As shown, an artificial valve prosthesis is shown, wherein the valve body 2 includes four channels 3, the four channels 3 are evenly distributed along the circumference of the valve body 2, and the interior of the valve body 2 between two adjacent channels 3 is a hollow structure 31. The interior of the valve body 2 is also provided with an optimized hole 30.

[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this patent, rather than to limit it. Although this patent has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solutions of the embodiments of this patent.

Claims

1. An artificial valve prosthesis, characterized in that: It comprises a valve body, wherein one or more channels are arranged inside the valve body, the channels run through the valve body, and a Tesla valve structure is arranged in each channel; wherein, Along the length direction of the channel, from the inflow end of the valve body to the outflow end of the valve body is the low-resistance direction of the Tesla valve structure, and from the outflow end of the valve body to the inflow end of the valve body is the high-resistance direction of the Tesla valve structure.

2. The artificial valve prosthesis according to claim 1, characterized in that: The Tesla valve structure includes a first guide unit plate, a second guide unit plate, a first protrusion and a second protrusion; The first guide unit plate and the second guide unit plate are arranged on the inner wall of the channel opposite to each other; A plurality of first protrusions are provided on the inner wall of the channel on the inner side of the first guide unit plate; A plurality of second protrusions are provided on the inner wall of the channel on the inner side of the second guide unit plate; The plurality of first protrusions and the second protrusions are arranged in cooperation with the first guide unit plate and the second guide unit plate to form the Tesla valve structure, so as to form a main channel and a plurality of branch channels connected to the main channel in the channel.

3. The artificial valve prosthesis according to claim 2, characterized in that: The first guide unit plate includes first baffles connected in sequence, the first baffle includes a first guide plate and a first arc transition plate connected to the first guide plate, and the first guide plate of one of the two adjacent first guide unit plates is connected to the first arc transition plate of the other first guide unit plate; The second guide unit plate comprises second baffles connected in sequence, the second baffle comprises a second guide plate and a second arc transition plate connected to the second guide plate, and the second guide plate of one of the two adjacent second guide unit plates is connected to the second arc transition plate of the other second guide unit plate; The first protrusion is arranged on the inner wall of the channel inside each first guide unit plate, a first side channel is formed between the first protrusion and the corresponding first guide plate, a first arc transition channel is formed between the first protrusion and the corresponding first arc transition plate, a first main channel is formed between the first protrusion and the corresponding second guide plate, the first side channel is connected to the first main channel, and the first arc transition channel is connected to the first side channel and the first main channel to form a first branch channel arranged in a closed loop; The second protrusion is arranged on the inner wall of the channel inside each second guide unit plate, a second side channel is formed between the second protrusion and the corresponding second guide plate, a second arc transition channel is formed between the second protrusion and the corresponding second arc transition plate, a second main channel is formed between the second protrusion and the corresponding first guide plate, the second side channel is connected to the second main channel, and the second arc transition channel is connected to the second side channel and the second main channel to form a second branch channel arranged in a closed loop; The adjacent second main channels and the first main channels are connected in sequence to form the main channel; The first branch channel and the second branch channel are distributed on both sides of the main channel along the extension direction of the main channel and are staggered with each other.

4. The artificial valve prosthesis according to claim 3, characterized in that: The first guide plate is a straight first guide plate, the first protrusion is a rectangular first protrusion, the length direction of the rectangular first protrusion is the same as the length direction of the straight first guide plate, and the first side channel formed between the rectangular first protrusion and the straight first guide plate is a straight first side channel; One end of the rectangular first protrusion is an arc end, and the first arc transition channel formed between the arc end and the first arc transition plate is a semi-annular first arc transition channel; The second guide plate is a straight second guide plate, the second protrusion is a rectangular second protrusion, the length direction of the rectangular second protrusion is the same as the length direction of the straight second guide plate, and the second side channel formed between the rectangular second protrusion and the straight second guide plate is a straight second side channel; One end of the rectangular second convex block is an arc end, and the second arc transition channel formed between the arc end and the second arc transition plate is a semi-annular second arc transition channel; The other end of the rectangular first protrusion is a pointed end, and the first main channel formed between the inclined surface of the pointed end and the corresponding straight second guide plate is a straight first main channel; The other end of the rectangular second convex block is a pointed end, and the second main channel formed between the inclined surface of the pointed end and the corresponding straight-shaped first guide plate is a straight-shaped second main channel; The adjacent straight-line second main channels and the straight-line first main channels are connected in sequence to form the main channel.

5. The artificial valve prosthesis according to claim 4, characterized in that: An inlet transition plate is provided on the inner wall of the channel near the inlet end of the valve body, the inlet transition plate is connected to the adjacent first arc transition plate, a liquid inlet transition channel is formed between the inlet transition plate and the corresponding second linear guide plate, and the liquid inlet transition channel is connected to the main channel; An outflow end transition plate is provided on the inner wall of the channel near the outflow end of the valve body, and the outflow end transition plate is connected to the adjacent straight first guide plate. A liquid outlet transition channel is formed between the outflow end transition plate and the corresponding straight second guide plate, and the liquid outlet transition channel is connected to the main channel.

6. The artificial valve prosthesis according to claim 3, characterized in that: The first guide plate is an arc-shaped first guide plate, the first protrusion is an arc-shaped first protrusion, the outer convex arc surface of the arc-shaped first protrusion can cover the arc-shaped first guide plate and the first circular arc transition plate, and the first side channel formed between the outer convex arc surface and the arc-shaped first guide plate is an arc-shaped first side channel; The first arc transition channel formed between the arc-shaped first protrusion and the first arc transition plate is a semi-annular first arc transition channel; The second guide plate is an arc-shaped second guide plate, the second protrusion is an arc-shaped second protrusion, the outer convex arc surface of the arc-shaped second protrusion can cover the arc-shaped second guide plate and the second arc transition plate, and the second side channel formed between the arc-shaped second protrusion and the arc-shaped second guide plate is an arc-shaped second side channel; The second arc transition channel formed between the arc-shaped second protrusion and the second arc transition plate is a semi-annular second arc transition channel; The surface of the arc-shaped first convex block corresponding to the arc-shaped second guide plate is an inwardly concave arc-shaped surface, and the first main channel formed between the inwardly concave arc-shaped surface and the arc-shaped second guide plate is an arc-shaped first main channel; The surface of the arc-shaped second convex block corresponding to the arc-shaped first guide plate is a concave arc-shaped surface, and the second main channel formed between the concave arc-shaped surface and the arc-shaped first guide plate is an arc-shaped second main channel; The adjacent arc-shaped second main channels and the arc-shaped first main channels are connected in sequence to form the main channel.

7. The artificial valve prosthesis according to claim 6, characterized in that: An inlet transition plate is provided on the inner wall of the channel near the inlet end of the valve body, the inlet transition plate is connected to the adjacent arc-shaped first guide plate, a liquid inlet transition channel is formed between the inlet transition plate and the corresponding second arc transition plate, and the liquid inlet transition channel is connected to the main channel; An outflow end transition plate is provided on the inner wall of the channel near the outflow end of the valve body, and the outflow end transition plate is connected to the adjacent second arc transition plate. A liquid outlet transition channel is formed between the outflow end transition plate and the corresponding arc-shaped first guide plate, and the liquid outlet transition channel is connected to the main channel.

8. The artificial valve prosthesis according to claim 5 or 7, characterized in that: An inflow hole is arranged on the end surface of the inflow end of the valve body, and an outflow hole is arranged on the end surface of the outflow end of the valve body; An inflow end conical surface is arranged in the hole wall of the inflow hole, and the inflow hole is connected with the liquid inlet transition channel through the inflow end conical surface; An outflow end conical surface is arranged in the hole wall of the outflow hole, and the outflow hole is connected with the liquid inlet transition channel through the outflow end conical surface; An inflow end connection portion is formed between the hole wall of the inflow hole and the side wall of the valve body; An outflow end connecting portion is formed between the hole wall of the outflow hole and the side wall of the valve body.

9. The artificial valve prosthesis according to claim 1, characterized in that: An optimized hole is provided inside the valve body; Along the circumferential direction of the valve body, the interior of the valve body located on both sides of the channel is a hollow structure.

10. The artificial valve prosthesis according to claim 1, characterized in that: It also includes a frame, a transition layer is provided between the valve body and the frame, the valve body is connected to the frame through the transition layer, or the valve body is directly connected to the frame by solidification.

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