Stephen Rugg Ankle foot orthotics are used by individuals who have - PowerPoint PPT Presentation

Stephen Rugg

 Ankle foot orthotics are used by individuals who have foot drop syndrome  Foot drop syndrome is the inability to flex your foot up while walking Source (4)

 Christopher Sullivan did research on terrain detection to try and improve ankle foot orthotics  Currently 2 MSD teams are designing active ankle foot orthotics to implement his terrain detection technology Source (2) Source (1)

Deliverable: Testing mechanism that will accurately mimic the motions a leg makes while walking Customer Need # Importance* Description CN1 1 Adjusted for different sized orthotics CN2 1 Support the active ankle foot orthotic CN3 1 Move along the path a human leg follows while walking CN4 1 Physically similar to the action of someone's foot who has foot drop CN5 1 Have foot impact the surface CN6 1 Easily adjust the settings of the leg motion. CN7 1 Last for 3 years of testing CN8 1 Be able to adjust to a flat, inclined, and declined surface CN9 1 Able to move the entire device CN10 1 Have diognostic capabilities CN11 1 Output and display the critical parameters CN12 2 Be able to adjust the walking speed CN13 2 User interface is easy to use CN15 3 Aesthetically pleasing

Angle of Lower Leg Rotation Throughout Level Walking Cycle (Adult) 40 Normal 30 Extra Slow Slow Medium 20 Fast 10 Angle (degrees) 0 Different Walking Paths from IR Perspective 2 -10 Level Walking Down Ramp -20 Up Ramp -30 1.5 -40 Voltage (V) -50 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Fraction of Walking Cycle 1 0.5 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Period

 4 Mechanical  2 Electrical Engineers Engineers ◦ Control Systems ◦ Structural Design ◦ Signal Processing ◦ LabView Programming ◦ Motor Selection ◦ Matlab Programming ◦ Data Collection ◦ Control System Design ◦ Vibrations ◦ GD&T

Gordon KE, Sawicki GS, Ferris DP. Mechanical 1. performance of artificial pneumatic muscles to power an ankle-foot orthosis. Journal of Biomechanics 2006;39(10):1832-1841. http://www.freemanmfg.com/product_info.php 2. ?products_id=424&osCsid=7a2e25fe5bc3acab 82b7901458b59053 Sullivan, Christopher. Design of a Terrain 3. Detection System for Foot Drop. RIT Master’s Thesis. 2012 http://www.ctoplp.com/products.html 4.