A catheter apparatus for renal neuromodulation, comprising: an elongated, flexible tubular member extending along a longitudinal axis, wherein the elongated tubular member has a proximal portion, a distal portion, and a central lumen therein, and wherein the tubular member comprises- a deflection region at the distal portion, wherein the deflection region includes a plurality of slots (128a-n) in a wall of the tubular member and substantially transverse to the longitudinal axis; and an orientation region adjacent to the deflection region and between the deflection region and a distal end of the proximal portion of the elongated tubular member, wherein the orientation region includes a plurality of slots in the wall of the tubular member and substantially transverse to the longitudinal axis; wherein the tubular member is selectively transformable between- a first state in which the deflection region is generally straight extending along the longitudinal axis, and a second state in which the deflection region comprises a generally helically-shaped structure and the orientation region has an elbow shape such that the distal end of the proximal portion of the tubular member is aimed through an interior of the helix; a plurality of energy delivery elements carried by the deflection region and including at least a first energy delivery element and a second energy delivery element, wherein, when the tubular member is in the second state, the first and second energy delivery elements are axially and radially spaced from one another about the longitudinal axis and both longitudinally and circumferentially offset from one another; and a control member operatively engaged with the tubular member to control movement of the flexible tubular member between the first state and the second state. an elongated, flexible tubular member extending along a longitudinal axis, wherein the elongated tubular member has a proximal portion, a distal portion, and a central lumen therein, and wherein the tubular member comprises- a deflection region at the distal portion, wherein the deflection region includes a plurality of slots (128a-n) in a wall of the tubular member and substantially transverse to the longitudinal axis; and an orientation region adjacent to the deflection region and between the deflection region and a distal end of the proximal portion of the elongated tubular member, wherein the orientation region includes a plurality of slots in the wall of the tubular member and substantially transverse to the longitudinal axis; a deflection region at the distal portion, wherein the deflection region includes a plurality of slots (128a-n) in a wall of the tubular member and substantially transverse to the longitudinal axis; and an orientation region adjacent to the deflection region and between the deflection region and a distal end of the proximal portion of the elongated tubular member, wherein the orientation region includes a plurality of slots in the wall of the tubular member and substantially transverse to the longitudinal axis; wherein the tubular member is selectively transformable between- a first state in which the deflection region is generally straight extending along the longitudinal axis, and a second state in which the deflection region comprises a generally helically-shaped structure and the orientation region has an elbow shape such that the distal end of the proximal portion of the tubular member is aimed through an interior of the helix; a first state in which the deflection region is generally straight extending along the longitudinal axis, and a second state in which the deflection region comprises a generally helically-shaped structure and the orientation region has an elbow shape such that the distal end of the proximal portion of the tubular member is aimed through an interior of the helix; a plurality of energy delivery elements carried by the deflection region and including at least a first energy delivery element and a second energy delivery element, wherein, when the tubular member is in the second state, the first and second energy delivery elements are axially and radially spaced from one another about the longitudinal axis and both longitudinally and circumferentially offset from one another; and a control member operatively engaged with the tubular member to control movement of the flexible tubular member between the first state and the second state.