Patent ID: 8512394
Filing Date: 2013-08-20
Classification: A61F

Abstract:
1. A balloon-expandable crush-recoverable stent, comprising: a tubular member having a longitudinal axis and a circumferential axis, the tubular member comprising first and second expandable modules linked by at least one flexible member, the at least one flexible member configured to allow the first expandable module to expand to a first expanded diameter and the second expandable module to expand to a second expanded diameter, wherein the first and second expandable modules can be independently actuated and wherein the first and second expanded diameters are independently selectable; wherein the first expandable module includes a first plurality of substantially non-deforming radial elements slidably-connected to allow the first expandable module to expand from a collapsed diameter to the first expanded diameter in response to an expansive force, a first locking mechanism for maintaining the first expandable module in the expanded diameter after deployment at a treatment site, and a first constraining mechanism for maintaining the first expandable module in the collapsed diameter until released during deployment at a treatment site; wherein the second expandable module includes a second plurality of substantially non-deforming radial elements slidably-connected to allow the second expandable module to expand from a collapsed diameter to the second expanded diameter in response to an expansive force, a second locking mechanism for maintaining the second expandable module in the expanded diameter after deployment at a treatment site, and a second constraining mechanism for maintaining the second expandable module in the collapsed diameter until released during deployment at a treatment site; and wherein neither the first constraining mechanism nor the second constraining mechanism pass through a closed passage extending circumferentially between a first opening and a second opening, the first and second openings being substantially perpendicular to the circumferential axis.