Artificial Heart Valve Stent and Weaving Method Thereof
First Claim
1. An artificial heart valve stent comprising:
- a tubule-shaped stent being able to radial transformation between expanding state and compressing state;
the stent comprising an upstream segment, a middle segment and a downstream segment;
a plurality of transformable units among each netline of the stent;
a plurality of arc line crutches made up or formed at two ends of the stent and sealed line eyes which are separated from transformable units;
a valve leaflet which can switch for blood passing through of unidirectional provided on inside of a middle segment of the stent, a valve leaflet joint line being formed at the junction of the valve leaflet and stent, a crosslink of two adjacent said valve leaflet joint lines forming a valve leaflet joint point;
both inside and outside faces of the upstream segment of the stent being covered with sealing membrane that is extended to the middle segment of the stent; and
a plurality of X-ray opaque markers and flexible hitch loops provided on the stent.
2 Assignments
0 Petitions
Accused Products
Abstract
An artificial heart valve and weaving method thereof are disclosed. The valve stent includes a tubular stent (10), valve leaflets (33), sealing membranes (351, 354), x-ray opaque markers (311, 312) and flexible connecting loops (41). The middle segment (15) of the net stent (10) is tubular or drum-shaped, or provided with radial protrusion structures (153), or provided with outer annular structures (155), or provided with outer free tongues (156), or provided with radial protrusion structures (153) and outer free tongues (156). The stent can be made by up and down interweaving the same one elastic metal wire, and also can be made by up and down interweaving different elastic metal wires. Moreover, the structure, shape and function of the valve stent are optimized; in radical compression, the valve can be transported to the right place with the help of interventional device; after expansion, fitted with figure of the vascular wall in the radical and axial direction, the artificial heart valve stent will not produce paravalvular leak; even more after implanting, the valve has a normal effect on prevent the slippage of artificial valve, which is caused by the blood reflux through the closed valve.
194 Citations
28 Claims
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1. An artificial heart valve stent comprising:
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a tubule-shaped stent being able to radial transformation between expanding state and compressing state; the stent comprising an upstream segment, a middle segment and a downstream segment; a plurality of transformable units among each netline of the stent; a plurality of arc line crutches made up or formed at two ends of the stent and sealed line eyes which are separated from transformable units; a valve leaflet which can switch for blood passing through of unidirectional provided on inside of a middle segment of the stent, a valve leaflet joint line being formed at the junction of the valve leaflet and stent, a crosslink of two adjacent said valve leaflet joint lines forming a valve leaflet joint point; both inside and outside faces of the upstream segment of the stent being covered with sealing membrane that is extended to the middle segment of the stent; and a plurality of X-ray opaque markers and flexible hitch loops provided on the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16)
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12. (canceled)
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13. (canceled)
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14. (canceled)
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15. (canceled)
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17. A weaving method of the stent comprising preparing an internal mould fitted with the configuration in expanding state of the stent, an elastic metal line is used as weaving line, main weaving points are as follows:
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A. weave spirally along exterior outlines of the internal mould with the weaving lines until all transformable units have been built to weave a complete stent body, B. the different line segments of weaving line form an up and down cross points when meeting at an intersection, while the up and down locations of the same line segment, at their adjacent cross points are converse, C. Deformable units surrounded by the different line segments of the weaving lines are quadrangle, weaving line turned at the two tips of the stent form arched line-inflextions or line bump, D. according to the need, sealed line eyes are made by turning the weaving lines round at least 360°
cyclically at two ends of the stent or other places,E. for a stent with three radial protrusion structures, the number of deformable units located in a same radial plane of the stent are weaved into multiple of 3, F. according to need, x-ray opaque markers are labeled on the weaving line of different places of the stent. - View Dependent Claims (18, 19, 20, 21, 22, 23, 26, 27, 28)
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24. (canceled)
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25. (canceled)
Specification