bit tricky and fiddly, but i would use curves.

Go into all views and use one of your side or front views.

Then create a 2 linear cv curve. Matching exactly where the wire is.

The create a NURBS Circle and position it at the top or bottomw of your curve.
(The circle is the radius of the wire, and the cruve is the length)

Select the circle then shift select the curve, then under modelling go to > Surfaces > Extrude. tick the box

At the bottom, either keep output to NURBS or poly's up to you.

Delete the curve and circle and your done.



Duplicate it loads and you have a cage.


Thats how i would do it anyway