An elongate medical device, comprising: a handle (14A, 24) comprising a control mechanism and a selective movement limiter (110, 122); a catheter shaft (19, 28) having a catheter shaft proximal end and a catheter shaft distal end, wherein the catheter shaft proximal end is coupled to the handle; an expandable structure comprising elongated splines (66A, 66B, 66C, 66D) and a distal hub (64A, 64B, 64C, 64D, 64E, 64F, 64G, 64J, 64K), wherein the expandable structure has an undeployed shape and a deployed shape, wherein the expandable structure is radially outward expandable from the undeployed shape to the deployed shape and inwardly collapsible from the deployed shape to the undeployed shape, wherein each of the elongated splines is coupled to and extends between the catheter shaft distal end and the distal hub; and a deflection control member (68, 72) having a distal end coupled to the distal hub (64A-64K), wherein the control mechanism is drivingly coupled with the distal hub (64A-64K) via the deflection control member (68, 72) and operable to move the deflection control member distally relative to the catheter shaft to inwardly collapse the expandable structure from the deployed shape to the undeployed shape and move the deflection control member (68, 72) proximally relative to the catheter shaft (19, 28) to radially outwardly expand the expandable structure from the undeployed shape to the deployed shape, and wherein the selective movement limiter (110, 122) is operable to limit movement of the deflection control member (68, 72) relative to the catheter shaft (19, 28), wherein the selective movement limiter comprises a clamp (110, 122) engageable with the deflection control member. a handle (14A, 24) comprising a control mechanism and a selective movement limiter (110, 122); a catheter shaft (19, 28) having a catheter shaft proximal end and a catheter shaft distal end, wherein the catheter shaft proximal end is coupled to the handle; an expandable structure comprising elongated splines (66A, 66B, 66C, 66D) and a distal hub (64A, 64B, 64C, 64D, 64E, 64F, 64G, 64J, 64K), wherein the expandable structure has an undeployed shape and a deployed shape, wherein the expandable structure is radially outward expandable from the undeployed shape to the deployed shape and inwardly collapsible from the deployed shape to the undeployed shape, wherein each of the elongated splines is coupled to and extends between the catheter shaft distal end and the distal hub; and a deflection control member (68, 72) having a distal end coupled to the distal hub (64A-64K), wherein the control mechanism is drivingly coupled with the distal hub (64A-64K) via the deflection control member (68, 72) and operable to move the deflection control member distally relative to the catheter shaft to inwardly collapse the expandable structure from the deployed shape to the undeployed shape and move the deflection control member (68, 72) proximally relative to the catheter shaft (19, 28) to radially outwardly expand the expandable structure from the undeployed shape to the deployed shape, and wherein the selective movement limiter (110, 122) is operable to limit movement of the deflection control member (68, 72) relative to the catheter shaft (19, 28), wherein the selective movement limiter comprises a clamp (110, 122) engageable with the deflection control member.