Patent ID: 7674245

Claim:
A catheter assembly comprising: an outer catheter member extending from a first distal end to a first proximal end, where the first distal end is flexible and comprises regions of varying stiffness, and has a pre-formed curvature; the outer catheter member having a first lumen therein, the first lumen extending from the first distal end to the first proximal end, the outer catheter member further including an outer handle member coupled to the first proximal end; a flexible inner catheter member movably disposed within the first lumen of the outer catheter member; the inner catheter member extending from a second distal end to a second proximal end and including an inner handle member coupled to the second proximal end, the second distal end having a pre-formed curvature; and the outer catheter member is more flexible than the inner catheter member, wherein the outer and inner catheter members are configured such that relative translation and rotation of the outer and inner catheter members causes the first distal end of the outer catheter member to assume a plurality of two and three dimensional shapes.