Patent ID: 8876884

Claim:
A prosthesis and deployment catheter system for treating an opening from a main body lumen to a branch body lumen, the prosthesis comprising: a radially expansible support, the support configured to be deployed in at least a portion of the branch body lumen; a plurality of fronds extending axially from circumferentially spaced locations on an end of the radially expansible support, the fronds being configured to be positioned across the opening and into the main body lumen, each frond having a first section with four side-by-side filaments and a second section having two side-by-side filaments; and at least one circumferential link connected to the plurality of fronds at circumferentially spaced locations, the circumferential link spaced axially apart from the support, wherein each frond is connected with the circumferential link at a single location, and wherein the prosthesis is mounted on a balloon catheter such that the radially expansible support is carried by a first portion of a balloon that extends longitudinally along a longitudinal axis of the balloon, the first portion being inflatable to a first diameter and the circumferential link is carried by a second portion of a balloon that extends longitudinally along the longitudinal axis of the balloon, the second portion being inflatable to a second diameter that is larger than the first diameter.