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Pressure Maintenance Device for Gastric Lap-Band

Pressure Maintenance Device for Gastric Lap-Band. John Huidekoper Mark Fritz Chris Schroeder David Mayhew Andrew Koivuniemi. Background Information. Obesity in United States Sources of help Gastric Bypass Lap-Band.

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Pressure Maintenance Device for Gastric Lap-Band

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  1. Pressure Maintenance Device for Gastric Lap-Band John Huidekoper Mark Fritz Chris Schroeder David Mayhew Andrew Koivuniemi

  2. Background Information • Obesity in United States • Sources of help • Gastric Bypass • Lap-Band Source:http://www.sptimes.com/2003/10/14/Worldandnation/Number_of__extremely_.shtml

  3. Design Problem • Loss of Pressure • Port Source: Why Pressure by Thomas Rauth, http://www.lapsf.com/images/lapbandlarge.jpg

  4. Our part • We need device that will internally: • Measure pressure • Maintain pressure • Step up pressure

  5. Device Basics • Lap-Band • Catheter and Port • Motor • Fluid filled bag (connected to catheter) • To be squeezed • Pressure sensor • Electronics • To measure pressure and control motor • Rf antenna • Step up pressure every 2-3 days

  6. Pump Schematic

  7. Pump Schematic

  8. Pump Schematic

  9. Pump Schematic

  10. Pump Schematic

  11. GUI Optimization 2.0 cm 1.2 cm 1.9 cm 2.2 cm

  12. Torque Still Too High Problem: max torque of the smaller motors is 50 mNm Solution: create a gear train to decrease the torque

  13. Gearing

  14. Motor and Battery Selection • Looking for ~40 mNm torque • Size range 3 cm- 5cm • Pricing/Optimizing • Power Requirements • Search for Battery

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