Pipe on helix 3D path with Mechanical Desktop

I have a pipe sweeped to a helix 3D path. On two ends of helix I need path
to be bended so it will looks something like this:

|
O
|

Where input and output (the two | lines) lies on same plane and are paralel.
'O' shows the top wiew of helix.

The pipe build on helix is placed inside cilindrical vessel and leaves it on
specific locations. This is a heat-exchanging system.

I try Bend feature, but it doesn't work. The diameter of helix and length of
input and output are parametrical, so they can vary on diferent designes.

I hope that someone who are more familiar with Mechanical Desktop can help
me to solve this problem.

Thanks