Rewalk features stabilizing crutches, motorized gears that move the legs, and a computer-equipped backpack holding a battery that powers the device for three to four hours. Motion sensors and onboard processing monitor the wearer’s upper-body movements and center of gravity; when the person shifts his or her torso, the device steps appropriately.

Product: ReWalk-I
Cost: $130,000
Availability: Early 2011
Source: www.argomedtec.com
Companies: Argo Medical Technologies