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CN-224206939-U - Artificial heart valve

CN224206939UCN 224206939 UCN224206939 UCN 224206939UCN-224206939-U

Abstract

The utility model provides a heart valve prosthesis, which comprises a bracket, valve leaflets, strips and connecting lines, wherein the valve leaflets are accommodated in the bracket, the valve leaflets are provided with at least two pieces and are distributed in a central symmetry mode along the circumferential direction of the inner surface of the bracket, the strips are connected with the valve leaflets, the strips are connected with the bracket through the connecting lines, or the strips are connected with the bracket, and the strips are connected with the valve leaflets through the connecting lines. The artificial heart valve can solve the problem of poor valve She Naijiu in the prior art, reduce valve She Yingli and prolong the service life of the artificial heart valve.

Inventors

  • YANG WEI
  • WEI YONGQIANG

Assignees

  • 杭州端佑医疗科技有限公司

Dates

Publication Date
20260508
Application Date
20250519

Claims (15)

  1. 1. The artificial heart valve is characterized by comprising a bracket (11), valve leaflets (12), a strip (13) and connecting lines (14), wherein the valve leaflets (12) are accommodated in the bracket (11), the valve leaflets (12) are provided with at least two pieces and are distributed symmetrically along the center of the circumferential direction of the inner surface of the bracket (11), the strip (13) is connected with the valve leaflets (12), and the strip (13) is connected with the bracket (11) through the connecting lines (14); Or the strip (13) is connected to the bracket (11), and the strip (13) and the valve leaflet (12) are connected through the connecting line (14).
  2. 2. The prosthetic heart valve of claim 1, wherein the leaflet (12) comprises a leaflet commissure portion (121) and a leaflet She Yuanhu portion (122) that are fixedly connected in sequence, the band (13) comprises a commissure band (131) and an arcuate band (132), the commissure band (131) is fixedly connected between the leaflet commissure portion (121) and the stent (11), the arcuate band (132) is fixedly connected between the leaflet She Yuanhu portion (122) and the stent (11), and the arcuate band (132) is disposed along an arcuate direction of the leaflet She Yuanhu portion (122).
  3. 3. The prosthetic heart valve of claim 2, wherein the leaflet (12) comprises oppositely disposed first (12 a) and second (12 b) surfaces, the leaflet She Yuanhu portion (122) comprising a start region (101) and an end region (102) disposed in spaced apart relation; The circular arc strip (132) passes from the first surface (12 a) to the second surface (12 b) and from the second surface (12 b) to the first surface (12 a) at intervals of a first distance from the start region (101), thus reciprocally penetrating into the end region (102).
  4. 4. The prosthetic heart valve of claim 3, wherein when the arcuate band (132) is one, the arcuate band (132) is disposed continuously through the valve She Yuanhu portion (122); or when at least two circular arc strips (132) are arranged, each circular arc strip (132) is inserted into the valve She Yuanhu part (122) at a set distance.
  5. 5. The prosthetic heart valve of claim 2, wherein the leaflet (12) comprises oppositely disposed first (12 a) and second (12 b) surfaces, the leaflet She Yuanhu portion (122) comprising spaced apart start (101) and end (102) regions, the arcuate strips (132) traversing from the first (12 a) to the second (12 b) surface and from the second (12 b) to the first (12 a) surface every first distance, traversing from the end (102) region to the second (12 b) surface, traversing from the first (12 a) to the second (12 b) surface and traversing from the second (12 b) surface to the first (12 a) surface every second distance, traversing from the first (12 b) surface to the start (101) surface.
  6. 6. The prosthetic heart valve of claim 2, wherein the arcuate band (132) comprises a first band (1321) and a second band (1322), the leaflet (12) comprises oppositely disposed first and second surfaces (12 a, 12 b), the leaflet She Yuanhu portion (122) comprises a start region (101) and an end region (102) disposed in spaced apart relation, The first strip (1321) passes from the first surface (12 a) to the second surface (12 b) and from the second surface (12 b) to the first surface (12 a) at first distances from the start region (101) and thus back and forth to the end region (102), and the second strip (1322) passes from the first surface (12 a) to the second surface (12 b) and from the second surface (12 b) to the first surface (12 a) at second distances from the end region (102) and thus back and forth to the start region (101); Or the first strip (1321) and the second strip (1322) respectively pass from the first surface (12 a) to the second surface (12 b) and from the second surface (12 b) to the first surface (12 a) from the start region (101) at intervals of a first distance, so as to reciprocate to the end region (102), and the first strip (1321) and the second strip (1322) are arranged in parallel.
  7. 7. The prosthetic heart valve of claim 2, wherein the stent (11) comprises a first end (111) and a second end (112) disposed opposite each other, the arcuate band (132) being fixedly connected to the stent (11) in a helically wound manner along the first end (111) in a direction toward the second end (112).
  8. 8. The prosthetic heart valve of claim 7, wherein when the arcuate band (132) is one, the arcuate band (132) is disposed continuously around the stent (11); or when at least two circular arc strips (132) are arranged, each circular arc strip (132) is wound around the valve She Yuanhu part (122) at a set distance.
  9. 9. The prosthetic heart valve of claim 2, wherein the stent (11) comprises a first end (111) and a second end (112) disposed opposite one another, the arcuate band (132) being helically wound clockwise from the first end (111) around the stent (11) to the second end (112) along the first end (111) toward the second end (112), and the arcuate band being helically wound counterclockwise from the second end (112) around the stent (11) to the first end (111) along the second end (112) toward the first end (111).
  10. 10. The prosthetic heart valve of claim 2, wherein the arcuate strips (132) comprise a third strip and a fourth strip, the stent (11) comprising oppositely disposed first and second ends (111, 112), The third strip is spirally wound on the bracket (11) to the second end (112) clockwise from the first end (111) along the direction of the first end (111) towards the second end (112), and the fourth strip is spirally wound on the bracket (11) to the first end (111) anticlockwise from the second end (112) along the direction of the second end (112) towards the first end (111); Or the third strip and the fourth strip are arranged in parallel, and the third strip and the fourth strip are respectively wound on the bracket (11) along the direction of the first end part (111) towards the direction close to the second end part (112) along the pointer.
  11. 11. The prosthetic heart valve of claim 2, wherein the leaflet commissure (121) is formed by the leaflet (12) protruding away from a midline of the leaflet (12), the commissure strips (131) being helically wound along a length of the leaflet commissure (121).
  12. 12. The prosthetic heart valve of claim 11, characterized in that the leaflet commissures (121) of adjacent two of the leaflets (12) are connected by one of the commissure strips (131), or the leaflet commissures (121) of adjacent two of the leaflets (12) are connected by each of the commissure strips (131), respectively.
  13. 13. The prosthetic heart valve of claim 2, wherein the leaflet (12) further comprises a leaflet free edge (123), the leaflet free edge (123) forming an L-shape with the leaflet commissure (121) after the strap (13) is connected to the stent (11).
  14. 14. The prosthetic heart valve of claim 2, wherein when the stent (11) is a skirted stent (11), the skirted stent (11) comprises a stent body and a skirt attached to the stent body, the band (13) and skirt being connected by the connecting line (14); Or when the hanger (11) is a skirtless hanger (11), the strip (13) is connected with the skirtless hanger (11) through the connecting line (14).
  15. 15. The prosthetic heart valve of claim 1, wherein the band (13) is elastic and has an elongation of less than 50%.

Description

Artificial heart valve Technical Field The utility model relates to the technical field of medical appliances, in particular to a heart valve prosthesis. Background The heart contains four heart chambers, the left atrium and left ventricle being located on the left side of the heart and the right atrium and right ventricle being located on the right side of the heart. The atrium forms a ventricular outflow tract with the ventricle, the left ventricle forms a left ventricular outflow tract with the aorta, and the right ventricle forms a right ventricular outflow tract with the pulmonary artery. Valves with a one-way valve function are arranged at the positions of the chamber inflow channel and the chamber outflow channel, so that the normal flow of blood in the heart chamber is ensured. When this valve becomes problematic, cardiac hemodynamics changes and cardiac dysfunction, known as valvular heart disease. The replacement of the transcatheter valve has the advantages of no need of chest opening, small trauma, quick recovery of a patient and the like, so that more and more operations are performed by adopting the transcatheter, the artificial heart valve is an important medical instrument for treating the valvular heart disease, the property of the valve She Naijiu is an important issue in the heart valve technology, the property of the valve She Naijiu refers to the capability of the valve to keep the structure and the function of the valve in long-term use, the conventional artificial heart valve is connected by directly suturing the valve leaflet and the bracket through sutures, when the artificial heart valve works in a heart cavity of a human body, the valve leaflet is easy to generate the phenomenon of valve leaflet stress under the impact of blood flow pressure, the service life of the valve is also reduced due to the needle hole damage generated by directly connecting the bracket and the valve, and the risk and the cost of subsequent treatment are increased due to the fact that the long-term heart function cannot be maintained through the artificial heart valve for a patient at low age. Disclosure of utility model Accordingly, an object of the present utility model is to provide a prosthetic heart valve that can solve the problem of poor performance of the valve She Naijiu in the prior art, reduce the number of valves She Yingli, and increase the service life of the prosthetic heart valve. The utility model provides a heart valve prosthesis, which comprises a bracket, valve leaflets, strips and connecting lines, wherein the valve leaflets are accommodated in the bracket, the valve leaflets are provided with at least two pieces and are distributed in a central symmetry mode along the circumferential direction of the inner surface of the bracket, the strips are connected with the valve leaflets, the strips are connected with the bracket through the connecting lines, or the strips are connected with the bracket, and the strips are connected with the valve leaflets through the connecting lines. In an embodiment, the leaflet includes a leaflet commissure portion and a leaflet She Yuanhu portion that are sequentially and fixedly connected, the band includes a commissure band fixedly connected between the leaflet commissure portion and the stent, and an arc band fixedly connected between the leaflet She Yuanhu portion and the stent, the arc band being disposed along an arc direction of the leaflet She Yuanhu portion. In one embodiment, the leaflet includes a first surface and a second surface disposed opposite each other, the leaflet She Yuanhu includes a start region and an end region disposed at intervals, and the circular arc strip passes from the first surface to the second surface and from the second surface to the first surface at intervals of a first distance from the start region so as to reciprocally penetrate the end region. In an embodiment, when the number of the circular arc strips is one, the circular arc strips are continuously inserted into the valve She Yuanhu, or when at least two circular arc strips are provided, the circular arc strips are inserted into the valve She Yuanhu at intervals by a set distance. In one embodiment, the valve leaflet comprises a first surface and a second surface which are oppositely arranged, the valve She Yuanhu comprises a starting area and a finishing area which are arranged at intervals, the circular arc strip penetrates from the first surface to the second surface and from the second surface to the first surface at intervals of a first distance from the starting area, so as to penetrate into the finishing area in a reciprocating manner, and then penetrates from the first surface to the second surface and from the second surface to the first surface at intervals of a second distance from the finishing area, so as to penetrate into the starting area in a reciprocating manner. In an embodiment, the circular arc strip comprises a first strip and a second strip