Device to Monitor and Enhance Back Exercise

1. Device to Monitor and Enhance Back Exercise Client: Frank J. Salvi, M.D. Advisor: John G. Webster, Ph.D. Team: David Meister - Team Leader Gabe Donatell - Communications John Thurlow - BWIG Jeremy O’Brien - BSAC

2. Introduction • Problem Statement • Background Information • Product Design Specifications • Design Alternatives • Evaluation of Alternatives • Future Work

3. Problem Statement Design and fabricate a device to monitor compliance of a patient to a specific back exercise. A computer should be used to provide feedback to the patient and physician. The device should be simple enough for a patient to operate in a non-clinical setting.

4. Background Information • Anatomy • Physical Therapy Exercises • Project Motivation

5. Product Design Specifications • Monitor spine in mid-sagittal and frontal planes in real time • Motivate the patient through interactive software • Demonstrate the proper exercise technique • Quantify exercises in terms of time and repetition • Export data for clinical use

6. Design Alternatives • Strain Track • Strain gauges with inclinometer • Fiber Optics

7. Strain Track • Disadvantages • manufacturing costs may be high • Advantages • very accurate in both planes • based on simple concepts • small in size • low component cost

8. Strain Gauges With Inclinometer • Advantages • very accurate in both planes • easy to implement • small in size • incredibly cost efficient • Disadvantages • inability to quantify lateral bending from a prone or supine position

9. Fiber Optics • Advantages • very accurate • small in size • very inexpensive • Disadvantages • inability to differentiate between bending in different planes

10. Prioritized Design Specifications LVDT Potent. Inclin Strain Gaug. Exten Mouse Strain Track Fiber Optics (8) Accuracy (flex./ext.) 2 2 3 3 3 1 3 2 (7) Accuracy (lateral) 1 1 2 2 2 1 3 2 (6) Ergonomics (comfort) 1 2 2 1 1 2 3 3 (5) Size 1 3 3 3 1 2 3 3 (4) Safety 3 3 3 3 3 3 3 3 (3) Ease of Implementation 2 2 2 1 1 2 2 3 (2) Supine Exercises 1 3 1 2 1 1 2 3 (1) Cost 1 3 3 3 1 3 3 3 TOTAL  55 77 88 81 67 60 103 93

11. Future Work • Develop a working prototype • Make necessary modifications • Work on computer interface • Write computer program • Test prototype and interface

12. Special Thanks To… • Dr. Frank Salvi – Orthopedics and Rehab • Professor John Webster - BME • John Dreger – Sr. Instrument Specialist • Professor Kreg Gruben - BME • Micki Wensman – Physical Therapist • Professor Edward Lovell - ME