Patent ID: 11951001
Assignee: EDWARDS LIFESCIENCES CARDIAQ LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 12:
13. A replacement heart valve prosthesis for deployment at a native heart valve, the prosthesis comprising:
a single-piece expandable frame portion expandable from a collapsed configuration to an expanded configuration comprising a proximal end and a distal end and a longitudinal axis extending therethrough, the expandable frame portion comprising a proximal row of foreshortening cells and a distal row of foreshortening cells, the proximal row and the distal row of foreshortening cells configured to collapse radially for delivery and to expand radially upon deployment, the expandable frame portion being configured to longitudinally foreshorten upon radial expansion;
a plurality of proximal anchors extending from the expandable frame portion and expandable from a collapsed proximal anchor configuration to an expanded proximal anchor configuration, each of the proximal anchors extending continuously from junctions between the proximal row of foreshortening cells of the single-piece expandable frame portion, wherein in the expanded configuration, ends of the plurality of proximal anchors are positioned radially outwardly relative from the expandable frame portion and extend in a direction substantially perpendicular to the longitudinal axis, the ends of the plurality of proximal anchors being axially positioned distal of the proximal end of the expandable frame portion;
a plurality of distal anchors extending from the expandable frame portion and expandable from a collapsed distal anchor configuration to an expanded distal anchor configuration, wherein in the expanded configuration, proximal ends of the plurality of distal anchors are positioned radially outwardly relative from the expandable frame portion and the axial length between a base portion of each of the distal anchors and the proximal ends of each of the plurality of distal anchors is less than a length of the cells of the distal row when in the expanded distal anchor configuration; and
a skirt annularly positioned around an exterior of the expandable frame portion to create an axial barrier to fluid flow exterior to the expandable frame portion when deployed within a body cavity, the skirt comprising:
a generally cylindrical portion having a proximal end and a distal end; and
a ring-shaped portion extending radially outward from the expandable frame portion at a location axially spaced from the proximal end of the generally cylindrical portion to prevent axial flow of fluid around an exterior of the prosthesis, the ring-shaped portion comprising an inner edge extending from the proximal end of the generally cylindrical portion of the skirt, the ring-shaped portion extending radially outwardly from the inner edge to an outer edge.