Device for Acute Rehabilitation of the paretic hand after stroke

1. Device for Acute Rehabilitation of the paretic hand after stroke Team: Carly Brown, Sasha CaiLesher-Perez, Nathan Kleinhans, Lee Linstroth

2. Client: Dr. Michelle Johnson Medical College of Wisconsin - Milwaukee Advisor: Prof. Mitch Tyler University of Wisconsin Madison

3. Background: Stroke • Affects 700 000 each year • Occurs mostly in people over the age of 65 • Results in • Hemiplegia • Loss of memory • Loss of verbal skills • Death

4. Background: Rehabilitation • Robot – aided therapy • Supination / pronation of the wrist • Flexion / extension of hand • Mechanical system • Visual cues MIT-Manus robot – aided therapy device

5. Problem Statement Design a portable rehabilitation device, which is automated, universal, comfortable and will assist rehabilitation of supination / pronation of the wrist as well as finger flexion / extension during the acute phase post-stroke.

6. Our system: Components Limit Switches Hand Grasper Wrist Rotator Casing

7. Our system: Safety • Switch will be depressed by peg on wrist rotator • Degree adjustable depending on abilities of patient in both supination and pronation directions

8. Our system: New look Sketches by Martin Gutierrez

9. Our system: Program Which hand will be used? O Right O Left What are the setting of the limit switches? Pronation Supination O 40 O 40 O 50 O 50 O 60 O 60 O 70 O 70 O 80 O 80 O 90 O 90 What level is the patient at? O Low O Medium O High

10. Testing: Clinicians • n = 5 • Prototype demonstration • Time trials • Evaluated with paired t-test • Heuristics evaluation • Evaluated with Mann-Whitney test

11. Testing: Patients • n = 5 • Use device over 10 sessions • Evaluate at 1st, 5th and 10th sessions • Grip strength • Active wrist range of motion • Subjective evaluation

12. Questions