System and method for treating biological vessels
AssigneeQuattro Vascular Pte Ltd.
InventorsTanhum Feld, Eitan Konstantino
Life of this patent
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Abstract
A system for performing angioplasty and a method of utilizing same are provided. The system includes a balloon mounted on a catheter shaft and an expandable constraining structure mounted over the balloon. The expandable constraining structure includes a plurality of axial struts crossing a plurality of radially-expandable rings being for constraining said balloon such that isolated balloon regions protrude through openings in said constraining structure when the balloon is inflated.
Claims27
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.
A method of treating a body vessel comprising:
- (a) positioning, in the vessel, a balloon disposed within 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 expandable constraining structure when said balloon is inflated;
- said expandable constraining structure being configured such that radial expansion of said radially-expandable rings:
- (i) does not substantially alter an axial distance between adjacent radially-expandable rings;
- and
- (ii) axially moves adjacent axial struts attached to said adjacent radially-expandable rings in opposite directions;
- and
- (b) inflating said balloon so as to enable said isolated balloon regions to protrude through said openings and contact a wall of the vessel while said plurality of axial struts and said plurality of radially-expandable rings are displaced from the vessel, thereby treating the body vessel.
A medical prosthesis comprising a substantially tubular expandable structure including a plurality of axial struts crossing a plurality of radially-expandable rings, said expandable constraining structure being configured such that radial expansion of said radially-expandable rings:
- (a) does not substantially alter a distance between adjacent radially-expandable rings;
- and
- (b) axially moves adjacent axial struts attached to said adjacent radially-expandable rings in opposite directions.
Dependencies are inferred from the claim text.