STENT FOR THE POSITIONING AND ANCHORING OF A VALVULAR PROSTHESIS IN AN IMPLANTATION SITE IN THE HEART OF A PATIENT
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Accused Products
Abstract
The present invention relates to a stet for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient. Specifically, the present invention relates to an expandable stent for an endoprosthesis used in the treatment of a narrowing of a cardiac valve and/or a cardiac valve insufficiency. So as to ensure that no longitudinal displacement of a valvular prosthesis fastened to a stent will occur relative the stent in the implanted state of the stent, even given the peristaltic motion of the heart, the stent according to the invention comprises at least one fastening portion via which the valvular prosthesis is connectable to the stent. The stent further comprises positioning arches and retaining arches, whereby at least one positioning arch is connected to at least one retaining arch via a first connecting web. The stent moreover comprises at least one auxiliary retaining arch which connects the respective arms of the at least one retaining arch connected to the at least one positioning arch.
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Citations
41 Claims
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1-21. -21. (canceled)
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22. A stent, comprising:
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a lattice skirt, having a plurality of closed cells extending around a circumference of the stent and disposed at a first end of the stent; a plurality of first arches, each having an apex projecting toward the first end of the stent and configured to be disposed within a sinus pocket of a native valve radially outward of a plurality of leaflets of the native valve when the stent is implanted; a first set of retaining arms, wherein respective first ends of each of the retaining arms of the first set are joined to the lattice skirt, and wherein respective second ends of each of the retaining arms of the first set are joined to one another; a second set of retaining arms, wherein respective first ends of each of the retaining arms of the second set are joined to the lattice skirt, and wherein respective second ends of each of the retaining arms of the second set are joined to one another; a first pair of struts, wherein respective first ends of each of the struts of the first pair are joined to the lattice skirt, and wherein respective second ends of each of the struts of the first pair of struts are joined to a portion of a retaining arm of the first set of retaining arms between the first and second ends of the respective retaining arm; and a second pair of struts, wherein respective first ends of each of the struts of the second pair are joined to the lattice skirt, and wherein respective second ends of each of the struts of the second pair of struts are joined to a portion of a retaining arm of the second set of retaining arms between the first and second ends of the respective retaining arm. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 41)
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35. A stent, comprising:
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a lattice skirt, having a plurality of closed cells extending around a circumference of the stent and disposed at a first end of the stent and defining a proximalmost end of the stent; a plurality of first arches, each having an apex projecting toward the first end of the stent and configured to be disposed radially outward of a plurality of leaflets of a native valve when the stent is implanted; a first set of retaining arms, wherein respective first ends of each of the retaining arms of the first set are joined to the lattice skirt, and wherein respective second ends of each of the retaining arms of the first set are joined to one another; a second set of retaining arms, wherein respective first ends of each of the retaining arms of the second set are joined to the lattice skirt, and wherein respective second ends of each of the retaining arms of the second set are joined to one another; a plurality of second arches, having an apex projecting toward a second end of the stent, opposite the first end, wherein respective ones of the plurality of second arches are circumferentially aligned with and joined to respective ones of the plurality of first arches and forming at least a portion of a distalmost end of the stent; and a prosthetic tissue valve attached directly to the first set of retaining arms and the second set of retaining arms. - View Dependent Claims (36, 37, 38, 39, 40)
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Specification