Import multiple curves simultaneously from ascii / CSV / Excel

[bmtt2688]

I've got a text file with a large number of separate curves containing families of XYZ coordinates of the points through which the curves pass. I'd like to import these points into Inventor with splines joining the points - I am aware that there is import functionality for doing this with a single curve (from an Excel file), but is there any way to do this with multiple curves (without joining the ends to form a single, long spline)? There is a very large number of separate curves, so I cannot afford to do this one at a time. I'm running Autodesk Inventor Professional 2014.

Thanks!