Patent ID: 9730791
Date: 2017-08-15
CPC Classifications: A61F

Claim:
1. A prosthesis configured to grasp intralumenal tissue when deployed within a body cavity, the prosthesis comprising: an expandable frame portion comprising a proximal end and a distal end and a longitudinal axis extending therethrough, the expandable frame portion comprising a plurality 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 configuration to an expanded configuration, wherein in the expanded configuration, each proximal anchor extends proximally away from the proximal end of the expandable frame portion and then turns to extend radially outwardly from the expandable frame portion; a plurality of distal anchors extending from the expandable frame portion and expandable from a collapsed configuration to an expanded configuration, wherein in the expanded configuration, each distal anchor extends distally away from the distal end of the expandable frame portion and then turns to extend proximally, each distal anchor extending to an end positioned radially outward from the expandable frame portion; and a skirt comprising: wherein the proximal anchors and distal anchors are separated by the plurality of foreshortening cells such that the proximal anchors and distal anchors are configured to be drawn closer together along the longitudinal axis when the expandable frame portion foreshortens; and wherein each distal anchor extends distally from the expandable frame portion along a first segment, the first segment being substantially parallel with the longitudinal axis.