Patent ID: 9216033
Filing Date: 2015-12-22
Classification: A61B,A61F,A61M

Abstract:
1. A system for performing angioplasty comprising: (a) a balloon mounted on a catheter shaft and having a longitudinal axis; and (b) an expandable constraining structure including a plurality of axial struts crossing a plurality of radially-expandable rings configured for constraining said balloon such that isolated balloon regions protrude through openings in said constraining structure when said balloon is inflated, said expandable constraining structure being configured such that radial expansion of said radially-expandable rings does not substantially alter a distance between adjacent radially-expandable rings along said longitudinal axis, wherein said expandable constraining structure is configured such that radial expansion of said radially-expandable rings axially moves adjacent axial struts attached to said adjacent radially-expandable rings in opposite directions wherein said expandable constraining structure further includes first and second end rings for fixedly attaching said expandable constraining structure to the catheter shaft.