Cardiac-valve prosthesis
First Claim
1. A method of making a cardiac valve prosthesis comprising:
- forming a frame of the prosthesis from a tube, the frame defining a principal axis of the cardiac valve prosthesis and comprising;
first and second annular elements positioned about the principal axis and axially separated from one another along the principal axis,a plurality of substantially linear valve leaflet supports extending from the first annular element to the second annular element and disposed about and oriented generally parallel to the principal axis; and
a plurality of anchor members extending from the first annular element to the second annular element, each anchor member arching radially outward from the first annular element to the second annular element and including a first end connected to the first annular element and a second end connected to the second annular element; and
mounting a valve onto the frame.
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Accused Products
Abstract
A cardiac-valve prosthesis which can be used, for example, as a valve for percutaneous implantation. The prosthesis includes an armature for anchorage of the valve prosthesis in the implantation site. The armature defines a lumen for passage of the blood flow and supports a set of prosthetic valve leaflets, which, under the action of the blood flow, are able to move into a radially divaricated condition to enable the flow of the blood through the lumen in a first direction and a radially contracted condition, in which the valve leaflets co-operate with one another and block the flow of the blood through the prosthesis in the opposite direction. The armature includes, in one embodiment, two annular elements connected by anchor members having the capacity of projecting radially with respect to the prosthesis, and support members for the set of leaflets, the support members being carried by at least one of the annular elements so as to leave substantially disengaged the aforesaid lumen for passage of the blood.
886 Citations
18 Claims
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1. A method of making a cardiac valve prosthesis comprising:
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forming a frame of the prosthesis from a tube, the frame defining a principal axis of the cardiac valve prosthesis and comprising; first and second annular elements positioned about the principal axis and axially separated from one another along the principal axis, a plurality of substantially linear valve leaflet supports extending from the first annular element to the second annular element and disposed about and oriented generally parallel to the principal axis; and a plurality of anchor members extending from the first annular element to the second annular element, each anchor member arching radially outward from the first annular element to the second annular element and including a first end connected to the first annular element and a second end connected to the second annular element; and mounting a valve onto the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An improved method of making an expandable cardiac valve prosthesis frame from a tube, the method comprising:
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cutting first and second axially spaced annular elements into the tube; cutting substantially linear leaflet supports into the tube, the leaflet supports extending from the first annular element to the second annular element, cutting Valsalva sinus anchors into the tube, the Valsalva sinus anchors extending from the first annular element to the second annular element, wherein each Valsalva sinus anchor is positioned between two respective leaflet supports, and wherein each Valsalva sinus anchor includes a first end connected to the first annular element and a second end connected to the second annular element; and performing a series of expansion operations after cutting the first and second annular elements, the leaflet supports and the Valsalva sinus anchors into the tube, including at least one expansion operation causing the Valsalva sinus anchors to arch radially outward from the first annular element to the second annular element. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification