Heart valve prosthesis, artificial valve formed by same, and preparation method therefor

1 . A heart valve prosthesis, comprising a support element of a tubular structure, and at least two lobule bodies connected to the inner wall of the support element, wherein

the support element comprises an outer layer fabric having selvages on two opposite sides, and a suture line for fixing the other two sides of the outer layer fabric to each other to form the tubular structure;

each of the lobule bodies is formed by stacking at least one lobule layer; and two opposite sides of the lobule body are respectively an interwoven side and a free side, with the interwoven side being fixed between the two selvages of the outer layer fabric by means of weaving, and the free side being a selvage;

wherein each of the lobule layers is formed by interweaving an inner side warp and an inner side weft; the interwoven side of the lobule body is fixed by means of weaving the inner side weft of each of the lobule layers onto the outer layer fabric; and the inner side warp is woven on the inner side weft;

wherein the number of yarns forming the inner side weft of each of the lobule layers is one; and the number of yarns forming the inner side warp of each of the lobule layers is also set to be one.

2 . The heart valve prosthesis of claim 1 , wherein the number of yarns forming the inner side weft in each of the lobule bodies is not greater than the number of the lobule layers in each of the lobule bodies; or/and the number of yarns forming the inner side warp in each of the lobule bodies is not greater than the number of the lobule layers in each of the lobule bodies.

3 . The heart valve prosthesis of claim 1 , wherein the number of yarns forming all the inner side wefts in all the lobule bodies is not greater than the number of the lobule bodies; or/and the number of yarns forming all the inner side warps in all the lobule bodies is not greater than the number of the lobule bodies.

4 . The heart valve prosthesis of claim 3 , wherein the number of yarns forming all the inner side warps in all the lobule bodies is set to be one, or/and the number of yarns forming all the inner side wefts in all the lobule bodies is set to be one.

5 . The heart valve prosthesis of claim 1 , wherein the number of yarns forming the inner side warps and the inner side wefts is set to be one in total.

6 . The heart valve prosthesis of claim 1 , wherein an interweaving area between each of the lobule bodies and the outer layer fabric is arc-shaped, rectilinear or/and of an irregular geometrical shape on a plane of the outer layer fabric.

7 . The heart valve prosthesis of claim 1 , wherein the support element and/or the lobule bodies are made of a biocompatible polymer.

8 . The heart valve prosthesis of claim 1 , wherein the lobule bodies are made of one or more of UHMWPE, PET, PEEK, TPU, PGA, PLGA, PLA, PLLA'S, PDO, PHA's, and PGSU.

9 . The heart valve prosthesis of claim 1 , wherein the support element is made of one or more of UHMWPE, PET, PEEK, TPU, PGA, PLGA, PLA, PLLA'S, PDO, PHA's, and PGSU.

10 . The heart valve prosthesis of claim 1 , wherein the length of the support element in the axial direction is 1 mm to 50 mm, and the yarns forming the outer layer fabric have the sizes of 5-100 D.

11 . The heart valve prosthesis of claim 1 , wherein the number of yarns forming the inner side weft in each of the lobule bodies is not greater than the number of the lobule layers in each of the lobule bodies; or/and the number of yarns forming the inner side warp in each of the lobule bodies is not greater than the number of the lobule layers in each of the lobule bodies.

12 . The heart valve prosthesis of claim 2 , wherein the number of yarns forming all the inner side wefts in all the lobule bodies is not greater than the number of the lobule bodies; or/and the number of yarns forming all the inner side warps in all the lobule bodies is not greater than the number of the lobule bodies.

13 . The heart valve prosthesis of claim 1 , wherein the number of yarns forming the inner side warps and the inner side wefts is set to be one in total.

14 . The heart valve prosthesis of claim 1 , wherein an interweaving area between each of the lobule bodies and the outer layer fabric is arc-shaped, rectilinear or/and of an irregular geometrical shape on a plane of the outer layer fabric.

15 . A preparation method for the heart valve prosthesis of claim 1 , comprising:

step 1, adopting a plurality of yarns to be arranged to form outer side warps, and adopting one yarn as an outer side weft to be interwoven with the outer side warps to form an outer layer fabric, two opposite sides, parallel to the outer side warps, of the outer layer fabric forming selvages;

step 2, disposing a plurality of grab ropes above the outer layer fabric, providing an interweaving area on the outer layer fabric, selecting one yarn to be interwoven with at least one outer side warp on one side of the interweaving area firstly, then extending to one of the grab ropes where the yarn is fixed, and then returning to the interweaving area, wherein the process of fixation between the interweaving area and one of the grab ropes is repeated until the yarn forms an inner side weft of each lobule layer after the yarn completes all areas from one side of the interweaving area to one side of each of the grab ropes;

step 3, adopting another yarn as an inner side warp to be interwoven on the inner side weft to form an inner side warp of each of the lobule layers; and using a thread end of the inner side warp to weave a plurality of lobule layers into a whole on a free side of the inner side weft to form individual lobule bodies; and

step 4, after all the lobule bodies are woven completely, suturing two axial ends of each of the outer side warps on the outer layer fabric by using a suture line.

16 . The preparation method of claim 15 , wherein in step 3, the thread end of the inner side warp returns to a location adjacent to the interweaving area so as to be ligated after being sequentially overlocked with the inner side weft on the free side of the inner side weft.

17 . A preparation method for the heart valve prosthesis of claim 1 , comprising:

step 1, adopting a plurality of yarns to be arranged to form outer side warps, providing an interweaving area on the outer side warps, disposing a plurality of grab ropes above the outer side warps, adopting one yarn as an outer side weft to be interwoven with the outer side warps, fixing the yarn forming the outer side weft to one of the grab ropes when being interwoven to the interweaving area, and then, returning the yarn to the interweaving area so as to be further interwoven with the outer side warps; making the yarn forming the outer side weft cooperate with the outer side warps to form an outer layer fabric, fixing the yarn forming the outer side weft to one of the grab ropes after extending to one of the grab ropes when being in the interweaving area, and then, returning the yarn to the outer side warps so that the yarn forming the outer side weft forms an inner side weft at segments between each of the outer side warps and each of the grab ropes;

step 2, adopting another yarn as an inner side warp to be interwoven on the inner side weft to form an inner side warp of each of lobule layers; and using a thread end of the inner side warp to weave a plurality of lobule layers into a whole on a free side of the inner side weft to form individual lobule bodies; and

step 3, after all the lobule bodies are woven completely, suturing two axial ends of each of the outer side warps on the outer layer fabric by using a suture line.

18 . An artificial valve, comprising a heart valve prosthesis, the heart valve prosthesis including a support element of a tubular structure, and at least two lobule bodies connected to the inner wall of the support element, wherein the support element comprises an outer layer fabric having selvages on two opposite sides, and a suture line for fixing the other two sides of the outer layer fabric to each other to form the tubular structure;

each of the lobule bodies is formed by stacking at least one lobule layer; and two opposite sides of the lobule body are respectively an interwoven side and a free side, with the interwoven side being fixed between the two selvages of the outer layer fabric by means of weaving, and the free side being a selvage;

the heart valve prosthesis prepared by using the preparation method for the heart valve prosthesis of claim 15 .

19 . The artificial valve of claim 18 , further comprising a stent mounted on the heart valve prosthesis.