1. Integrated Transport System for Children with CP
Gayathri Srinivasan
Partners: David Dwight & Joseph Tejan
Client: Jennifer Miros

2. NEED & SCOPE

3. Cerebral Palsy
Cerebral Palsy is a neurological condition that affects movement and coordination
There is no cure
There are treatments for pain, and ambulatory devices that aim to increase a patient’s independence

4. Goal
To design an integrated wheelchair/walker/cane system for a 12-year-old that is easily transported, intuitive, and functional.

5. Design Requirements Weight Capability >90 kg Lightweight < 30 kg
Portability
Collapsible and compact
Intuitive to Convert
Easily to convert between devices
Functionality
Must function equally well as a walker, wheelchair, and cane
Comfort
Can be used for long periods of time
Safety
Consider tipping forward and sideways
Cost
< $3000 for entire system

6. CHOSEN DESIGN

8. WHEELCHAIR

9. WHEELCHAIR

10. WHEELCHAIR
Zippie’s Pediatric Tilt- in-Space Wheelchair

11. CANE

12. CANE

13. CANE

14. WALKER

15. WALKER

16. WALKER

17. WALKER

18. LEG-DISK ROTATION SYSTEM

19. LEG-DISK ROTATION SYSTEM

20. WALKER

21. WALKER

22. SAFETY ANALYSIS

23. STRESS ON LEG-DISK ROTATION SYSTEM

24. FORCE OF A PERSON TIPPING

25. TIPPING FORWARD

26. TIPPING SIDEWAYS

27. MANUFACTURING

28. MATERIALS TOTAL WEIGHT: 25.54 kg Part Material Advantages
Walker & Cane Frames
6061-T6 Aluminum
Strong, Lightweight, Cheap, Durable
Walker & Cane Handles
NVPC Foam
Comfort, Elasticity, Custom Moldable
Wheels
Rubber
Durability, Versatility
Part
Weight
Manufacturing Method
Wheelchair
22.68 kg
Contract
Walker
2.49 kg
Die Casting
Cane
0.37 kg
TOTAL WEIGHT: kg

29. COST
TOTAL COST: $2280

30. COST Prototype Mass Production (100 units) Total Cost: $2280
Lead Time: 4 weeks
Mass Production (100 units)
Total Cost $228000
Lead Time: 6 weeks

31. CONCLUSIONS

32. SPECIFICATIONS MET Weight Capability >90 kg ✅ Product Weight
Portability
Collapsible and compact
Intuitive to Convert
Easy to convert between devices
Functional
Must function equally well as a walker, wheelchair, and cane
Comfort
Can be used for long periods of time
Safety
Consider tipping forward and sideways
Cost
< $3000 for entire system

33. FUTURE DIRECTIONS Ensure the system is fully collapsible
Make the system adjustable to fit a growing child
Add a storage bag to the wheelchair

34. LESSONS LEARNED How to use CAD
To not get attached to a design idea before working out all of its kinks
Limit scope
(especialneeds.com)

35. ACKNOWLEDGEMENTS
Dr. Klasner
Rebecca Gilson
Jennifer Miros

36. SOURCES http://www.canchild.ca/en/aboutcanchild/resources/gmfcs.pdf

37. QUESTIONS?
Thanks for listening!