Patent ID: 7292885

Claim:
An apparatus for delivering a medicament or therapeutic agent to an obstruction within a vascular segment or a body passageway which comprises: a catheter having a distal end and a proximal end; a substantially cylindrical shaped expansion member located on the distal end of the catheter, the expansion member including first and second ends and having a plurality of flexible elongate elements, the plurality of flexible elongate elements comprising: a first set of elements having a first common direction of rotation crossing a second set of elements having a second common direction of rotation opposite to that of the first direction of rotation to form a double helix mesh; altering means engageable to said first and said second ends of said expansion member for altering a distance therebetween to move said expansion member between a first configuration wherein said expansion member has a first diameter and a second configuration wherein said expansion member has a first second diameter, said second diameter being greater than said first diameter; at least one electrical leads extending throughout the longitudinal length of said catheter, in electrical communication with, and engaged to said expansion member; and one or more micelles encapsulated with medicament or therapeutic agent coated on said expansion member.