Ankle Foot Orthosis
Lately, powered exoskeletons have been introduced for people who suffer from lower limb injury or dysfunction. It has opened up many possibilities.
UNIQUE PROPERTIES / PROJECT DESCRIPTION:
There is a limited market for people who suffer from lower limb injury or dysfunction to obtain powered exoskeletons that help restore normative walking function. Current state-of-the-art designs require large, bulky, equipment that can be unsightly and draw attention to the device. In a refinement of current powered exoskeletons for the ankle, we have embraced the form of the components to create an overall look and feel that is modern, elegant and increases the overall acceptance of the device for the user.
OPERATION / FLOW / INTERACTION:
This device transforms the experience of wearing an assistive device into one that improves daily function and looks like a top of the line sports car. After attaching to the foot, no additional attention is needed from the user other than taking a step forward. Control of the device adapts to walking speed automatically.
PROJECT DURATION AND LOCATION:
This project started in August of 2013 in Champaign-Urbana, IL and is currently on going.
PRODUCTION / REALIZATION TECHNOLOGY:
Our design utilizes a set of linear actuators to provide assistance at the ankle. Embedded sensors in the foot piece are used to provide information to control the correct amount and timing of assistance during walking. The foot piece is designed to go in any time of footwear.
SPECIFICATIONS / TECHNICAL PROPERTIES:
The overall width of the device can be anywhere from 12-20 mm (depending on calf width), depth 20-26 mm (depending on shoe size), and height 20-40 mm (depending on leg length).
ankle foot orthosis, powered exoskeletons, from lower limb injury,
This device is based on research being done in the up and coming field of rehabilitation robotics. The goal of this field is to restore normal function of walking to those with impairments. Currently, powered exoskeletons are being tested on people with spinal cord injury, stroke and other neurological disorders. This is mostly done in a lab setting as few devices have been designed for daily use. This device has the potential to impact the lives of people with pathology to continue daily activities they otherwise have stopped doing without it.
The biggest and hardest challenge of the design was trying to incorporate an actuator that is large enough to improve function, but small enough as to not add too much weight to the exoskeleton.
TEAM MEMBERS (4) :
Cliff Shin, Elizabeth Hsiao-Wecksler, Matthew Petrucci and Kaito Choy
Cliff Shin, 2013.