Ly Nguyen


disables : mobility : spring : muscle : sensor : :

About the project:
To assist knees' mobility for the disables

The Problem:
Ha My is a 9 year old girl. She has had inborn mobility disabilities, which is calledspastic diplegia- a form of Spastic cerebral palsy. She feels extremely painful with every movement because her heels can not be stretched. This is such a nightmare with a little girl, who ought to have enjoyed playing with her peers. Even though Ha My has movement disabilities but she still can move with strong efforts. After observing and discussing with her physical therapist, we analyzed the reason that the signal intensity, which are transmitted from her brain to the legs is very weak.

The Solution:
We decided to invent an exoskeleton that can reinforce limb movement. The machine is designed as a suit for both legs and is easy to adjust to fit and assist knees’ mobility. It enables wearers to stand up and walk around. Leg joints are connected with one another by ball-bearings and are interacted through a crack string. A spring at the end of the string is fixedly attached to hip joints. The spring helps balance the natural contraction of legs. Consequently, Ha My just needs a little force when moving and she can stretch her legs with less effort. Our team hopes to apply this invention in medical to improve the disables’ lives, who have mobility disorder. We desire to develop a suit that can assist not only the legs but also other parts of human body by providing supportive technology to enable system assisted body movements. Moreover, the customized pair of crutches were built based on the Newton Law. There is a force when a girl pressed her arms on the holding tray, and there is a reaction force ( opposite direction with the previous one ) so it may causes harm for My when using for a long time. For that reason, we choose this type of shoe sole to reduce reaction force.