Mina is a second version of the IHMC exoskeleton [34], with
only two actuated DOFs: hip f/e and knee f/e, and a more compact
mechatronic architecture. It is aimed to provide mobility assistance
for people suffering from paraplegia or paraparesis. Its control
method is similar to the earlier IHMC version, moving the user’s
legs by replaying pre-recorded joints trajectories. Wearing Mina
the user can trigger single step or continuous steps, as well as
increase or decrease the walking speed. To help users get familiar
with Mina, step transition duration can be tuned as well. Two SCI
subjects evaluated Mina: after different training sessions, both of
them were able to walk with forearm crutches at speeds up to
0.20 m/s. Their cognitive efforts were evaluated to be low, since
they could maintain eye contact and converse while walking in
Mina.