Date of Last Revision

2023-05-03 12:52:35


Mechanical Engineering - Cooperative Education

Degree Name

Bachelor of Science

Date of Expected Graduation

Spring 2019


This report details the design process of a lower limb exoskeleton leg brace for elderly people with walking disabilities or others with disabilities that limit mobility. While there are other similar products on the market, the general design can be improved and these improvements have been implemented into the design presented within. Among these improvements are progress in efficiency, weight, user comfort, and cost. The results of the study are the design of a novel leg brace that improves on existing designs in each of these areas.

Our design solution incorporates the use of a single leg brace with no additional hip supports that utilizes an electric motor mounted to the side of the brace on the upper leg. The power is transmitted to the joint with a worm gear which will exert force when the user climbs stairs. The frame of the leg skeleton will be made of aluminum and the components which rest against the body will be 3D printed with ABS plastic. This choice of materials will allow our brace to have enough strength to support an adult male climbing stairs while still being comfortable to wear.

The design of the brace presents significant advantages over other similar products as it will be worn only on one leg and will be easier to take on and off when desired. This means easier mobility and greater quality of life for the users of such products.

Research Sponsor

Dr. Shao Wang

First Reader

Dr. James Keszenheimer

Second Reader

Dr. Gopal Nadkarni



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.