摘要:
Die Erfindung betrifft ein System und ein Verfahren zum Crimpen einer Herzklappenprothese (12) auf einen Katheterschaft. Das System umfasst zwei Bauteile (1, 2), welche die Herzklappenprothese (12) aufnehmen und zum Crimpen der Herzklappenprothese (12) in Richtung (14) ineinander geschoben werden. Das zweite Bauteil (2) besteht dabei aus einem Handgriff (3) und Ausformungen (5). Das erste Bauteil (1)weist Aussparungen (6) auf, die derart ausgeformt sind, dass sie die Ausformungen (5) des zweiten Bauteils (2) aufnehmen können.
摘要:
A sequentially deployed prosthetic cardiac valve includes a self-expanding frame having an atrial skirt, a ventricular skirt, and an annular region disposed therebetween. A first anterior tab is disposed on an anterior portion of the frame. A posterior tab is on a posterior portion of the self-expanding frame. The frame may be designed so that any portion may expand sequentially in any desired order. For example, a portion of the first anterior tab and a portion of the posterior tab may partially self-expand first. Next, the first anterior tab may fully self-expand before the posterior tab fully self-expands. The posterior tab may fully self-expand next followed by the ventricular skirt, or the ventricular skirt may self-expand next followed by full expansion of the posterior tab.
摘要:
A collapsible valve prosthesis (1) includes an armature (2) and a set of prosthetic valve leaflets (3a, 3b, 3c) supported by the armature (2). The armature (2) is expandable from a contracted condition to an expanded condition for anchoring at an annulus of a natural valve site, and includes a tubular intra-annular portion (2a) defining a blood flow lumen having an inflow side and an outflow side. The tubular intra-annular portion (2a) supports (202, 204, 206) the prosthetic valve leaflets (3a, 3b, 3c) in the blood flow lumen and is provided with outward formations (200) for coupling with the natural valve site. The armature includes an over-annular portion (2b) linked to the intra-annular portion (2a) to extend collar-like over the annulus of the natural valve site at the inflow side of the blood flow lumen. The armature may also include an under-annular portion to extend collar-like at the outflow side of the blood flow lumen. The prosthesis may permit mitral valve replacement (MVR) without removing the native valve leaflets and the chordae tendinae.