CN207949946U - Artificial heart valve forming ring - Google Patents

Abstract

The utility model is related to a kind of artificial heart valve forming rings, including supporter, the supporter includes the tubular body for having more laths, the every lath is non-linear structure, there are one straight slots for tool between adjacent two laths, each straight slot extends to the other end of the main body from one end of the main body, and the width of the lath is definite value.Above-mentioned artificial heart valve forming ring, since supporter includes the tubular body for having more laths, every lath is non-linear structure, within the heartbeat period, lath can be deformed upon with the movement of heart, so that the perimeter of forming ring changes therewith, valve orifice area also changes therewith, and then the free movement rule of annulus is adapted to, to reduce influence of the forming ring to left heart function.

Description

Artificial heart valve forming ring

Technical field

The utility model is related to medical instruments fields, more particularly to a kind of artificial heart valve forming ring.

Background technology

There are four heart valves for the heart of human body：Bicuspid valve, tricuspid valve, aorta petal and pulmonary valve.With bicuspid valve For, mitral position plays the role of an one-way cock between atrium sinistrum and left ventricle.In cardiac cycle process In, mitral valve open when left atrium contracts, blood flows to left ventricle by atrium sinistrum；When left ventricular contraction, mitral valve closure, blood Liquid is pumped from left ventricle to whole body.

When lesion occurs in bicuspid valve, such as annulus expands, that is, when left room is shunk, bicuspid valve can not close completely It closes, causes part blood to flow to atrium sinistrum by bicuspid valve, the phenomenon that backflow of blood occur, be commonly called as mitral reflux.Bicuspid valve Backflowing can be such that cardiac output and ejection fraction declines, and LV Diastolic end of term capacity and pressure obviously increase, and cause pulmonary artery High pressure and heart failure, eventually lead to death.

Common treatment method for mitral reflux is valve reparation plasty.Under surgeon recycles in vitro, repair Impaired heart valve form again, corrects widened annulus, to treat mitral reflux.In order to keep long-term treatment to imitate Fruit, after valve reparation plasty, surgeon is often implanted into an artificial valve forming ring in the position of patient's annulus, with Ensure the good moulding of annulus, while preventing annulus from further expanding, to maintain long-term treatment effects.

Artificial valve forming ring often uses three-decker to design：Innermost layer be metal or high molecular material supporter, in Interbed is stitching floor, and outermost layer is fiber weaving cloth layer.Internal layer supporter primarily serves effectively moulding effect.Clinically apply Forming ring is divided into three types from rigidity：Hard ring, semi-rigid ring and flexi-ring.The internal layer supporter of early stage is designed as hard Ring, that is, internal layer supporter is made of the prodigious metal material of rigidity, such as titanium alloy.After being implanted into heart, hard ring is not easy to send out Raw deformation, plays the role of movement that is good moulding, but limiting annulus.That is, in systole annulus size It cannot change with the contraction of heart, the movement of annulus is restricted, and then influences left ventricular function.Flexi-ring is adopted mostly Use high molecular polymer as supporter, flexi-ring can deform in systole, not influence the movement of annulus, but soft Ring is excessively soft, cannot be satisfied the effectively moulding requirement of annulus.Semi-rigid ring combines the advantages of hard ring and flexi-ring, passes through tune The rigidity of section supporter make semi-rigid ring can good moulding and heart contraction when annulus size variation, it is more next It attracts attention more.

Usually, semi-rigid ring uses the metal wire material of variable diameters or different layers of metal sheets to be superimposed to be formed more, leads to Adjustment wire diameter or sheet thickness are crossed, the superposition number of plies adjusts the purpose of rigidity to realize.But the mould used in this technology Tool processing is very cumbersome, and complex process, technical difficulty are high.

Currently, a kind of region certain using metal tube laser cutting hollow out is created as the technology of supporter.It should Technology is pre-designed certain shape and forms corresponding processing road using the process principle of laser high-energy removal metal material Diameter, laser removes a certain amount of material of metal tube along preset machining path, to achieve the purpose that be adjusted to required rigidity. The area of material removal is referred to as hollow out rate with the ratio of complete metal pipe area.The big region of hollow out rate, the rigidity of forming ring Relatively low, the small region of hollow out rate, the rigidity of forming ring is higher.Such technical matters is simple, it is easy to accomplish.Adjust different hollow outs Rate can fast implement the rigidity of adjustment forming ring supporter.

For example, referring to Fig. 1, a kind of artificial heart valve forming ring, the axial direction of internal layer supporter upper edge forming ring is uniformly Round hollow-out unit 11 is distributed with.In systole, the spacing between hollow-out unit 11, which will not change, (is only Material deforms), the perimeter of forming ring can be kept constant.In circumference constant, the area of forming ring is also kept constant.It is this After in the forming ring implantation heart of design structure, during heart motion cycle, the shape of forming ring can be with annulus size It changes, but the area of valve mouth can be kept constant due to the area of forming ring thereon is kept constant, and cannot be satisfied valve The variation demand of open area to influence the own movement of annulus, and then influences left heart function.

Utility model content

Based on this, in view of the above-mentioned problems, it is necessary to provide a kind of artificial heart valve forming ring, the supporter of the forming ring Shape be capable of and change with the movement of heart, the valve orifice area which limits can also be sent out with heart movement Changing, to adapt to the free movement rule of annulus, to reduce influence of the forming ring to left heart function.

A kind of the utility model used technical solution that solves the above problems is：

A kind of artificial heart valve forming ring, including supporter, the supporter include the tubulose master for having more laths Body, the every lath is non-linear structure, and there are one straight slot, each straight slots for tool between adjacent two laths The other end of the main body is extended to from one end of the main body.

The width of the lath is definite value in one of the embodiments,.

The shape and size of more laths are equal in one of the embodiments,.

The radical of the lath is 2~8 in one of the embodiments,.

Bridging unit is provided in the straight slot in one of the embodiments, by least between the adjacent lath The one bridging unit connection.

The width range of the bridging unit is 0.2~1mm in one of the embodiments,.

The length of the bridging unit is the most narrow spacing between two adjacent laths in one of the embodiments, From.

The lath helically structure or waveform configuration in one of the embodiments,.

Ranging from 20 °~60 ° of the lift angle of the helical structure in one of the embodiments,.

The supporter further includes two connections for being located at two ends of the main body in one of the embodiments, Portion is provided with pitman in the interconnecting piece, and the both ends of the pitman are inserted in respectively in two interconnecting pieces.

Above-mentioned artificial heart valve forming ring, since supporter includes the tubular body for having more laths, every lath It is non-linear structure, within the heartbeat period, lath can be deformed upon with the movement of heart, so that forming ring Perimeter changes therewith, and valve orifice area also changes therewith, so adapt to annulus free movement rule, to reduce at Influence of the shape ring to left heart function.

Description of the drawings

Fig. 1 is the partial structural diagram of the supporter of the heart valve prosthesis of the prior art；

Fig. 2 is that the artificial heart valve forming ring of the utility model first embodiment is torn the structure after portion outer layer and shows It is intended to；

Fig. 3 is the structural schematic diagram after the supporter of artificial heart valve forming ring shown in Fig. 2 is straightened；

Fig. 4 is the partial structural diagram at another visual angle of the supporter of artificial heart valve forming ring shown in Fig. 3；

Fig. 5 is that the supporter of artificial heart valve forming ring shown in Fig. 3 is splitted and the plane office after being unfolded along its circumferential direction Portion's figure；

Fig. 6 is the structural schematic diagram at the interconnecting piece docking of artificial heart valve forming ring shown in Fig. 2；

Fig. 7 is artificial heart valve forming ring shown in Fig. 2 along the cross-sectional view perpendicular to forming ring circumferential direction；

Fig. 8 is the utility model artificial heart valve forming ring along the cross-sectional view perpendicular to forming ring circumferential direction；

Fig. 9 is the partial structurtes signal of the supporter of the artificial heart valve forming ring of the utility model second embodiment Figure；

Figure 10 is the partial structurtes signal of the supporter of the artificial heart valve forming ring of the utility model 3rd embodiment Figure；

Figure 11 is the structural schematic diagram of the artificial heart valve forming ring of the utility model fourth embodiment.

Specific implementation mode

To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, below in conjunction with the accompanying drawings to this The specific implementation mode of utility model is described in detail.Elaborate many details in order to abundant in the following description Understand the utility model.But the utility model can be much to implement different from other manner described here, this field Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs The limitation for the specific implementation opened.

It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly another On one element or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be with It is directly to another element or may be simultaneously present centering elements.Term as used herein " vertically ", " level ", "left", "right" and similar statement for illustrative purposes only, be not offered as being unique embodiment.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet Include any and all combinations of one or more relevant Listed Items.

Referring to Fig. 2, the artificial heart valve forming ring 10 of the utility model first embodiment is the three-dimensional saddle being closed Structure meets the physiology and appearance of human body mitral annulus.Artificial heart valve forming ring 10 includes preceding ring segment 101, rear ring segment 102, left ring segment 103 and right ring segment 104.

Artificial heart valve forming ring 10 includes supporter 100 and the outer layer 200 for being coated on 100 periphery of the supporter.

Referring to Fig. 3, supporter 100 is tubular structure comprising main body 120 and be located at 120 two ends of main body Two interconnecting pieces 130.Supporter 100 forms closed loop configuration by two docking of the interconnecting piece 130.That is, supporter 100 Each reserved one section of region that straight slot 111 is formed without hollow out in both ends, forms interconnecting piece 130.

Please continue to refer to Fig. 3, main body 120 includes more laths 113, and every lath 113 is non-linear structure, adjacent There are one straight slots 111, each straight slot 113 to extend to the another of main body 120 from one end of main body 120 for tool between two laths 113 One end.In other words, in terms of the side of supporter 100, main body 120 includes multiple straight slots 111, and multiple straight slots 111 are by the main body 120 are divided into multiple spaced laths 113.Further, it is provided with bridging unit 112 in straight slot 111.Adjacent two batten It is connected by an at least bridging unit 112 between item 113.

Referring to Fig. 4,113 width of each lath is definite value, in order to produce and process.It is more specific in the present embodiment Root lath 113 is uniformly distributed in main body 120, and the shape and width all same of more laths 113.

In order to keep forming ring 10 that there is preferable supportive and good anti-fatigue performance in heart, for example, lath 113 radical can be 2~8, in other words, 120 one end of main body the longitudinal center axis perpendicular to main body 120 it is transversal The end of 2~8 laths 113 is distributed on face, that is, the same longitudinal center axis perpendicular to main body 120 of main body 120 it is transversal 2~8 notches are offered on face.Preferably, the radical of the lath 113 is 4~6.It is furthermore preferred that the lath 113 Radical is 4 or 6.

It is understood that the width and shape of more laths 113 can also be not completely equivalent.For example, multiple straight slots 111 Main body 120 is divided into the lath 113 that 4 width are not completely equivalent, e.g., two adjacent slats 113 it is of different size, with one Two adjacent laths 113 of lath 113 it is of same size.

Please continue to refer to Fig. 4, from the point of view of the circumferencial direction of supporter 100, lath 113 is helical structure.Correspondingly, along branch From the point of view of the circumferencial direction of support body 100, straight slot 111 is helical form void region.That is, main body 120 is the structure of spring-like.In the heart In the dirty period of motion, main body 120 can be deformed upon along with the movement of heart, so that the perimeter of forming ring 10 changes, To change the area of valve mouth defined by forming ring 10.

In order to enable forming ring 10 has appropriate rigidity, in the case where the quantity of lath 113 is certain, straight slot 111 Width range be preferably 0.2~0.8mm.If this is because the width of straight slot 111 be less than 0.2mm, the width of lath 113 Larger, directly so that the rigidity of main body 120 is excessive, the excessive main body 120 of rigidity is not easy to form the forming ring 10 of saddle；If logical The width of slot 111 is more than 0.8mm, then, the width of lath 113 is smaller, and the rigidity for the forming ring 10 being consequently formed is smaller, directly makes It obtains forming ring 10 and is also easy to produce risk of breakage during making and use.Preferably, in the present embodiment, the width of straight slot 111 For 0.5mm.

Specifically, ranging from 20 °~60 ° of the lift angle of the helical structure.So-called lift angle, that is, lead angle refers to spiral The angle of the circumference and helix of central diameter expansion.Preferably, in the present embodiment, the lift angle of the helical structure is 45 °.Spiral The lift angle of structure has an impact the rigidity of forming ring.In general, lift angle is smaller, and helical structure is closeer, the material of hollow out removal Material is more, and rigidity is lower.When the lift angle of helical structure is less than 20 °, the rigidity of forming ring 10 is smaller, can not play good modeling Shape acts on.And when the lift angle of helical structure is more than 60 °, the rigidity of forming ring 10 is excessive, influences the movement of annulus.By experiment Verification, when the lift angle of helical structure is 45 °, the best results of the fatigue resistance in stress of forming ring 10.

Please refer to fig. 5, width d ranging from 0.2~1mm of the bridging unit 112.When the width of bridging unit 112 When degree is less than 0.2mm, the intensity of bridging unit 112 is relatively low, is easily broken.When the width of bridging unit 112 is more than 1mm, 10 local stiffness of forming ring can be caused excessive, to influence the whole deformation of forming ring 10.Preferably, the width of bridging unit 112 Degree d is 0.5mm.Preferably, the length of bridging unit 112 is the minimum range between two adjacent slats 113.Preferably, bridge Angle between the length direction 1121 of receipts or other documents in duplicate member 112 and the length direction 1131 of lath 113 is 90 °.

Specific in the present embodiment, being provided with multiple bridging units 112, Duo Geqiao of same size in same straight slot 111 Receipts or other documents in duplicate member 112 is mutually parallel, and is uniformly distributed.

Bridging unit 112 and lath 113 can be integrated formed structures.For example, forming the mistake of straight slot 111 in laser cutting Cheng Zhong retains certain area not hollow out, so that straight slot 111 is formed discontinuous structure, at this point, the not region of hollow out, that is, bridging unit 112.At least provided with a bridging unit 112 in each straight slot 111, two adjacent slats 113 are connected by bridging unit 112 It connects, it can be to avoid occurring distorting between main body 120 in the process of bending more laths 113 or loose possibility, to improve branch The stability of support body 100.

The material of supporter 100 can be Nitinol, stainless steel, titanium-cobalt alloy etc..Normally, supporter 100 has Outer wall and inner wall.The diameter of outer wall is known as outer diameter, and the diameter of inner wall is known as internal diameter, and the region between outer wall and inner wall is known as wall, Its thickness is known as wall thickness.When the outer diameter and larger wall thickness of supporter 100, the rigidity of forming ring 10 is larger, and excessive size The excessively protrusion tissue surface of forming ring 10 can be caused, thrombus is be easy to cause.Preferably, the external diametrical extent of supporter 100 be 0.5~ 3mm, wall thickness range are 0.1~1mm.Preferably, the outer diameter of supporter 100 is 1.4mm, wall thickness 0.25mm.

Please continue to refer to Fig. 2, artificial heart valve forming ring 10 forms a closed loop configuration of head and the tail.Specifically, The region of the not no hollow out in each reserved one section of the both ends of supporter 100, forms interconnecting piece 130, the both ends of supporter 100 pass through connection The docking of portion 130 forms closed loop configuration.For example, laser welding may be used, ultrasonic bonding, glue bond etc., and modes are realized pair It connects.Preferably, the equal length of two interconnecting pieces 130, and the length of each interconnecting piece 130 is 0.5~3mm.Preferably, it connects The length in portion 130 is 1.5mm.If the length of interconnecting piece 130 is less than 0.5cm, when welding, laser facula easy damaged interconnecting piece 130 The cutting structure of surrounding, influences the bonding strength of forming ring 10.If the length of interconnecting piece 130 is more than 3cm, forming ring 10 can be caused Local location rigidity it is excessive, influence the shape of forming ring 10.

Also referring to Fig. 6, interconnecting piece 130 is internally provided with pitman 131, and the both ends of pitman 131 plug respectively In two interconnecting pieces 130 to realize the connection at the both ends of supporter 100.For example, will the company of being plugged in by way of laser welding Metal bar 131 in socket part 130 welds together with supporter 100.

Usually, it in order to make artificial heart valve forming ring that there is preferable performance, generally requires and designs each ring segment At different rigidity, for example, design when, often use 101 rigidity of preceding ring segment it is larger, then ring segment 102, left ring segment 103 and The smaller structure of 104 rigidity of right ring segment.In the prior art, in order to make the rigidity of preceding ring segment 101 be more than the rigidity of other ring segments, lead to Frequently with the method for 101 hollow out rate of ring segment before reduction, that is, the hollow out rate of preceding ring segment 101 is less than the hollow out rate of other ring segments, but It is that this method not only increases the design difficulty of hollow out lines, meanwhile, the mode of rigidity gradual change is but also supporter 100 exists There is a phenomenon where discontinuity when deformation, and the position strain for causing part especially rigidity larger is larger, reduce entire artificial The fatigue behaviour of valvuloplasty ring.

Specific in the present embodiment, it is preferable that the material of pitman 131 is identical as the material of supporter 100.Pitman The shape of 131 outer surfaces is identical as the shape of 100 inner surface of supporter, and the outer diameter of pitman 131 is slightly less than the interior of supporter 100 Diameter, for example, the outer diameter of pitman 131 is less than 100 internal diameter 0.05mm of supporter.Pitman 131 can be the tubing with cavity, It may be solid cylindrical structure.Preferably, pitman 131 is solid cylinder structure.The length of pitman 131 be 3~ 10mm.Preferably, the length of pitman 131 is less than the sum of the length of two interconnecting pieces 130.It is furthermore preferred that the length of pitman 131 Degree is 5mm.Closed loop is carried out by using the mode that pitman 131 docks, the rigidity of ring segment 101, avoids before being effectively increased The rigidity of ring segment 101 before being improved by the way of reducing hollow out rate, processing is simpler, and production cost is relatively low.

Also referring to Fig. 7, outer layer 200 includes layer of silica gel 210 and fiber weaving cloth layer 220.Layer of silica gel 210 is coated on support The periphery of body 100.Fiber weaving cloth layer 220 is coated on the periphery of layer of silica gel 210, in order to the suture with heart.

It should be noted that in order to make it easy to understand, shown in Fig. 2 is that eliminate outer layer at 104 position of right ring segment later Structural schematic diagram, in the present embodiment, outer layer 200 wrap up entire supporter 100, that is, also there is outer layer in the position of right ring segment 104 200 coverings.

Specific in the present embodiment, layer of silica gel 210 can be the silicone tube that internal diameter is more than 100 outer diameter of supporter.Fiber is knitted Layer of cloth 220 can be such as terylen line, and the tubular structure being fabricated to using the technique of knitting, then to be covered using macromolecule silk thread In the outer surface of layer of silica gel 220, and head and the tail are connected to form a whole the outside for being coated on layer of silica gel 210 with suture.It is preferred that , the outer surface of fiber weaving cloth layer is also provided with the preferable coating of biocompatibility, such as Parylene (Parylene) Coating, to reduce thrombosed risk after the implantation heart of forming ring 10.

It is understood that referring to Fig. 8, layer of silica gel 210 is also provided with protrusion 211.The protrusion 211 can become at Sutural margin of the shape ring 10 in implantation with natural tissue heart suture.In practical operation, suture is across the protrusion 121 and naturally Heart tissue, to which forming ring 10 be fixed together with natural tissue heart.In the present embodiment, protrusion 211 can be by silicon The integrated molding of glue-line 210 obtains.

Above-mentioned artificial heart valve forming ring 10, since supporter 100 includes the tubular body for having more laths 113 120, lath 113 is non-linear structure, and within the heartbeat period, lath 113 can be deformed upon with the movement of heart, So that the perimeter of forming ring 10 changes therewith, also changed therewith by the valve orifice area that forming ring 10 limits, Jin Ershi The free movement rule for answering annulus, to reduce influence of the forming ring to left heart function.

Further, since being connected using bridging unit between adjacent slat 113, supporter 100 can be constrained in deformation process In each lath 113 movement, to avoid supporter 100 bending when occur loosely and distortion the phenomenon that, improve supporter 100 Structural stability, and then improve artificial heart valve forming ring 10 yield.

Referring to Fig. 9, in terms of the side of supporter 100, the lath 113 of the supporter 100 in second embodiment is along parallel It is waveform configuration in longitudinal center's axis direction of supporter 100, lath 113 extends to end from the head end of main body 120.Supporter More laths 113 are distributed on 100.The shape and size all same of more laths 113, circle of the more laths 113 in main body 120 It is uniformly distributed in circumferential direction.Preferably, lath 113 is 2~8, it is furthermore preferred that lath 113 is 6.

Specifically, being connected by bridging unit 112 between adjacent slat 113, bridging unit 112 can constrain supporter There is the phenomenon that loose and distortion to avoid lath 113, carries in 100 relative motion in deformation process between each lath 113 The high structural stability of supporter 100.Minimum range of the length of bridging unit 112 between two adjacent laths 113, That is, bridging unit 112 connects shortest two points of distance between two adjacent slats.For example, lath 113 is arranged in sine wave, Angle between the length direction and bridging unit 112 and the tangential direction of 113 junction of lath of bridging unit 112 is 90 °.

It is appreciated that lath 113 can also be other shapes, for example, lath 113 can also be M waveform configurations etc..

Referring to Fig. 10, unlike Fig. 9, the main body 120 in 3rd embodiment includes multigroup lath, every group of lath packet Include two laths 113 in mirror symmetry.In terms of the side of supporter 100, lath 113 is along the longitudinal direction for being parallel to supporter 100 Central axis direction is distributed in sine wave period.Each sine wave includes a wave crest, a trough and is connected to adjacent wave crest Supporting rod between trough.Specifically, in every group of lath, wherein the wave of the wave crest of a lath 113 and another lath 113 Paddy is oppositely arranged, and the wave crest of trough and another lath 113 is oppositely arranged, and forms multiple substantially elliptical structures.Preferably, main Body 120 includes 1~4 group of lath.It is furthermore preferred that main body 120 includes 3 groups of laths.

Please continue to refer to Figure 10, connected by bridging unit 112 between two adjacent groups lath 113.Specifically, two adjacent groups In lath, connected by bridging unit 112 between adjacent two laths 113.Bridging unit 112 connects two adjacent slats 113 Between minimum range.For example, bridging unit 112 connects the wave of the trough and another lath 113 of wherein one lath 113 Peak.

1 is please referred to Fig.1, is the structural representation of the artificial heart valve forming ring 20 of another embodiment of the utility model Figure.The artificial heart valve forming ring 20 is artificial Tricusp Valvuloplasty ring, has the three-dimensional knot for meeting tricuspid valve physiology plasticity Structure.With heart valve prosthesis 10, i.e., unlike artificial mitral valve forming ring, artificial heart valve forming ring 20 is open loop knot Structure.Artificial heart valve forming ring 20 is made of preceding ring segment 201, rear ring segment 202 and spacer ring section 203.Artificial heart valve forming The supporting body structure of ring 20 is with reference to above-described embodiment, and details are not described herein.

Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, it is all considered to be the range of this specification record.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (9)

1. a kind of artificial heart valve forming ring, including supporter, which is characterized in that the supporter includes having more laths Tubular body, the every lath is non-linear structure, and tool is there are one straight slot between adjacent two laths, each The straight slot extends to the other end of the main body from one end of the main body, and the width of the lath is definite value.

2. artificial heart valve forming ring according to claim 1, which is characterized in that the shape and ruler of the more laths It is very little to be equal.

3. artificial heart valve forming ring according to claim 1, which is characterized in that the radical of the lath is 2~8 Root.

4. artificial heart valve forming ring according to claim 1, which is characterized in that be provided with bridging list in the straight slot Member passes through at least one bridging unit connection between the adjacent lath.

5. artificial heart valve forming ring according to claim 4, which is characterized in that the width range of the bridging unit For 0.2~1mm.

6. artificial heart valve forming ring according to claim 4, which is characterized in that the length of the bridging unit is two Minimum range between a adjacent lath.

7. artificial heart valve forming ring according to claim 1, which is characterized in that the lath helically structure or Waveform configuration.

8. artificial heart valve forming ring according to claim 7, which is characterized in that the lift angle range of the helical structure It is 20 °~60 °.

9. according to claim 1~8 any one of them artificial heart valve forming ring, which is characterized in that the supporter is also Two interconnecting pieces including being located at two ends of the main body are provided with pitman, the pitman in the interconnecting piece Both ends be inserted in respectively in two interconnecting pieces.