1. P15001: Soft Ankle-Foot Orthotic
Adam Start, all team members introduce yourselves
Adam Podolec Jared Green Tyler Leichtenberger
Noah Schadt Megan Ehrhart Geni Giannotti

2. Team Members and Customers
Adam Podolec- Electrical Engineer / Co-team Lead
Megan Ehrhart- Electrical Engineer / Co-team Lead
Jared Green- Mechanical Engineer
Tyler Leichtenberger- Mechanical Engineer
Noah Schadt- Mechanical Engineer
Geni Giannotti- Biomedical Engineer
Edward Hanzlik- Faculty Guide
Dr. Elizabeth DeBartolo- Customer / MSD Lead
Adam
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

3. P15001: Soft Ankle-Foot Orthotic
Agenda
Project Background
Team Members and Customers
Project Description
Customer Requirements
Engineering Requirements
Concept Summary
System Architecture
Summary of Final Design
System Testing Results
Project Evaluation
Future Opportunities and Suggestions
10 minutes
2 minutes
2 minutes
5 minutes
Adam
1 minute
5 minutes
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

4. P15001: Soft Ankle-Foot Orthotic
Project Description
Active Ankle Foot Orthotic
Assistive walking device
Utilized by individuals with Foot Drop
Foot Drop
Inability to dorsiflex the foot (i.e. point toe upward)
Affects 20% of stroke survivors and individuals with MS, ALS, and nerve damage
Causes clients to drag foot (causing trips and falls)
Current AFO’s are…
Bulky and rigid
Provide assistance at all times
Geni
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

5. Project Overview- Goals
Create an active orthotic, which provides assistance only during appropriate times during the gait/walking cycle
Assistance timing determined using…
Heelstrike sensor to measure gait
Distance sensor to distinguish terrain
Foot lifted by a McKibben air muscle
Untethered device
Geni
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

6. Customer Requirements
How the System Addresses the Need:
Hold foot up when stepping forward
Increased Dorsiflexion Mobility with Air Muscle
Last for full day without recharging
Muscle can provide correct number of flexes for target demographic
Fit into clients existing shoe
Adds only 0.12 inches to clients foot
Adapt to different terrain
Manual switch added to provide desired support up stairs
Utilizes a McKibben muscle
Muscle used and designed for needed deflection and number of flexes
The device must be soft and flexible rather than rigid
Device is machine washable and more aesthetically pleasing than previous project
Geni
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

7. Engineering Requirements
Geni
ER13 3 C3
Wearibility
Average Time to put on AFO
min 5
3:56 ▼
RIT students, not familiar with project, applied entire system
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

8. P15001: Soft Ankle-Foot Orthotic
System Architecture
Adam
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

9. Concept Summary- Entire System
Adam
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

10. Concept Summary- Lower Component
Adam
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

11. Design Summary- Mechanical
McKibben Air Muscle
Wire sleeving, Silicon tubing, Plastic Supports
Contracts 17% with 10.5lbs of force at 60psig
Supports over 30lbs!
Noah, muscle slide
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

12. Design Summary- Mechanical
Lower Component Housing
Designed to hold the lower PCB board and IR sensor
Provides waterproof protection for both components
Attaches easily to the AFO so it can be removed so the AFO can be washed
Tyler
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

13. Design Summary- Electrical
Megan
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

14. System Testing Results
embeded video, no sound. Jared
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

15. Project Evaluation- Accomplishments
Top 6 finalist for the Undergratuate Design Competition at the Summer Biomechanics, Bioengineering, and Biotransport Conference in Snowbird, Utah
Finalist in New York Business Plan Competition
Highlighted project on NPR
All engineering requirements met
Addressed all customer needs
Well maintained EDGE website with complete documentation of the design process
Abstract published in RES Magazine
Jared, NPR=national public radio
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

16. Project Evaluation- Improvements
Be able to perform subject testing on clients with foot drop at the Nazareth Clinic
Hand drawn (GAD) vs. CAD
Improved planning between electrical and mechanical systems
Adam
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

17. Project Opportunities
If our team was given 3 additional weeks…
Acquire new backpack and research ergonomics
Re-examine part placement in the upper component housing
Begin applying for additional grants
Order a new distance sensor, identical to our current model
Create a new concept design without distance sensing capabilities
Explore new options for force sensor placement on the heel and toe
Adam
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

18. Project Opportunities
If our team was given 1 additional year…
Purchase new model distance sensor and redesign LCH accordingly
Discuss and research ergonomics of the brace
Incorporate total stairs functionality
Address code hang-up by ordering high power processing unit and new solenoid
Look into using carbon dioxide rather than air
Examine possibility of closed-loop system
Adam
September 20, 2018
P15001: Soft Ankle-Foot Orthotic

19. P15001: Soft Ankle-Foot Orthotic
Questions?
September 20, 2018
P15001: Soft Ankle-Foot Orthotic