Annular Mesh

摘要

An annular mesh expandable radially from a compact diameter to a radially-expanded deployed disposition in which the mesh is capable of sustaining a radially outwardly directed resistive force even when flexing its longitudinal axis out of a straight line, the mesh being composed of stenting struts, the stenting struts being arranged in a plurality of zig-zag strings around the circumference of the lumen, with occasional connector struts joining adjacent strings to create a closed circumference unit cell between two such connector struts and two adjacent connected strings there being a plurality of such unit cells arranged in sequence around the circumference between said two adjacent strings; and characterized in that there is a non-constant increment of strut length, serving to displace along the longitudinal axis each unit cell relative to the circumferentially next adjacent unit cell.

主权项

1. An annular mesh that defines a longitudinal lumen wherein
the mesh is radially expandable from a predeployment disposition to a radially expanded deployed disposition in which the mesh is adapted to direct a resistive force radially outward while simultaneously flexing in response to externally applied bowing forces, the mesh comprises stenting struts arranged in a plurality of zig-zag strings around a lumen circumference, with connector struts joining adjacent strings of stenting struts at an apex of each of the adjacent strings of stenting struts to create a closed circumference unit cell between two connector struts and two adjacent connected strings of stenting struts, a plurality of the unit cells are arranged around lumen between two strings of stenting struts, and the strut length within a portion of a zig-zag string of stenting struts exhibits a non-constant increment in strut length that displaces adjacent unit cells along the longitudinal axis.