While robotic exoskeletons typically convey images of Iron Man, Harvard scientists have now designed a “Soft Exosuit” that uses flexible fabric to reduce injuries and fatigue. Previously, wearers had to confine their movements within the capabilities of the exoskeleton; however, Harvard’s new prototype works with the capacity of the human body to increase natural movements and provide necessary balance.

The “Soft Exosuit” uses principles of basic human movement to work with the wearer’s musculature in order to increase stamina and prevent injuries. It’s different from previous, harder exoskeletons in that it mimics natural human motions. Scientists had to study the exact mechanics of walking, lifting, and balance in order to ensure that the exoskeleton worked with the existing capability of the wearer, not the other way.

Unlike previous exoskeletons, the wearer doesn’t need to provide manual control or attempt to walk within the pace of the suit. Harvard scientists integrated the suit with a complicated system of exosensors that transmit information to the controlling microcomputer; in turn, the computer tightens or loosens force within the cables.

Harvard’s project caught the attention of DARPA, who granted the Wyss Institute for Biologically Inspired Engineering a gift of $2.9 million. It’s hoped that the exoskeleton can provide critical support for wounded warriors paralyzed in the Iraq and Afghanistan conflicts.

The “Soft Exosuit” also has civilian uses for patients with physical difficulties. This includes not only patients suffering from paralysis, but those with significant muscle weaknesses. Increased movement can help prevent muscle atrophy, pressure ulcers, and a variety of other conditions that afflict persons with limited movement.