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Thermal Probe for Neurological Exam

Thermal Probe for Neurological Exam. March 2, 2001 Team Members: Andrew Hoyord, Bern Jordan, David Manthei, Dana Mueller, and Paul Victorey Client: Misha-Miroslav Backonja, M.D. Advisor: Willis Tompkins, Ph.D.

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Thermal Probe for Neurological Exam

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  1. Thermal Probe for Neurological Exam March 2, 2001 Team Members: Andrew Hoyord, Bern Jordan, David Manthei, Dana Mueller, and Paul Victorey Client: Misha-Miroslav Backonja, M.D. Advisor: Willis Tompkins, Ph.D. Biomedical Engineering 301 – Spring 2001 University of Wisconsin at Madison

  2. Presentation Overview • Problem statement • Background information • Prototype • Alternatives • Evaluation • Future plans • Conclusion

  3. Problem Statement • Test patients for neurological damage • Heat to target temperatures of 38°C and 45°C • Convenient and safe

  4. Background Information • Neurological damage diagnosed with heat and cold sensitivity testing • Temperature sensation • Quantitative sensory testing • Welch-Allyn power handle

  5. Prototype Solution • Components • analog temperature control circuit • resistive heating element • thermistor

  6. Prototype

  7. Alternative Solutions • Heating element • resistive heating • cylindrical resistor • Ni-Chrome wire • probe material

  8. Alternative Solutions • Temperature control • thermistor • analog versus digital • Timer control • alerts doctor after five seconds • button versus two electrodes

  9. Comparison of Solutions • Analog • simple and inexpensive • flexible • unsafe if components failed • Digital • control both timer and temperature • potentially safer • smaller but more complex

  10. Management Plan • Repair last semester’s prototype • test battery and method of resistive heating • alternative power sources • Construct heat probe elements • resistive heating element • thermal conductivity and capacity • differing thickness

  11. Management Plan • Test device on ourselves • how warm probe feels • determine optimal thickness of material • Improve safety • improve analog design • digital design

  12. Conclusion • Goals for current semester • Questions???

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