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MSD Project 13022

VAD BREAKAWAY POWER. Final Project Review. MSD Project 13022. Agenda. Project Overview & Concept Summary System Architecture Prototyping Final Products Test Devices Testing Results Customer Needs and Engineering Specifications Bill of Materials Future Enhancements. Project Background.

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MSD Project 13022

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  1. VAD BREAKAWAY POWER Final Project Review MSD Project 13022 MSD II P13022 Final Presentation

  2. Agenda • Project Overview & Concept Summary • System Architecture • Prototyping • Final Products • Test Devices • Testing Results • Customer Needs and Engineering Specifications • Bill of Materials • Future Enhancements MSD II P13022 Final Presentation

  3. Project Background • 6-10% of all people worldwide over the age of 65 will develop heart failure. • There are 287,000 deaths per year due to heart failure in the US. • The ThoratecHeartmate II Left Ventricular Assist Device (LVAD) is a bridge-to-transplant device that assists the heart, pumping blood throughout the body for those who are awaiting a heart transplant. MSD II P13022 Final Presentation

  4. Present LVAD External Power http://www.thoratec.com/ MSD II P13022 Final Presentation

  5. Project Summary • The transcutaneous power cord that connects the implanted device to the external motor control unit is often a source of infection. • The cord is only about 1 foot long so it doesn’t catch on things. • When the unit is dropped, the skin around the cord tears and becomes infected. MSD II P13022 Final Presentation

  6. Project Objectives • Create a breakaway port for power cable that will detach with a certain amount of force. • Cable port is implanted where the cable leaves the body • Increase flexibility of cable and reduce stress on surrounding skin • Create an internal power supply and motor control unit for the pump when the cord becomes disconnected. • Backup power should last long enough for the patient to seek assistance if something goes wrong MSD II P13022 Final Presentation

  7. System Architecture MSD II P13022 Final Presentation

  8. System Architecture Internal Device Breakaway Port External Device MSD II P13022 Final Presentation

  9. Electrical Prototype MSD II P13022 Final Presentation

  10. Final Internal Product MSD II P13022 Final Presentation

  11. Final External Product MSD II P13022 Final Presentation

  12. Pump Testing MSD II P13022 Final Presentation

  13. Battery Lifetime Test MSD II P13022 Final Presentation

  14. Battery Recharge Test MSD II P13022 Final Presentation

  15. Magnetic Force Testing MSD II P13022 Final Presentation

  16. Force Pull Test on Skin MSD II P13022 Final Presentation

  17. Magnet Test Data from Magnet Force Testing Rig MSD II P13022 Final Presentation

  18. Magnet Test Data from Magnet Force Testing Rig MSD II P13022 Final Presentation

  19. Heat Generation Test Data MSD II P13022 Final Presentation

  20. Specs and Results MSD II P13022 Final Presentation

  21. Budget/Bill of Materials https://edge.rit.edu/edge/P13022/public/BOM%20Datasheets Estimated Expenditures: $943 MSD II P13022 Final Presentation

  22. Future Enhancements - Electrical • Internal Microcontroller • Transmit Battery Data to External • Monitor Battery Voltage • Monitor Temperature • External Microcontroller • Receive Battery Data from Internal • Display Actual Lifetime to user MSD II P13022 Final Presentation

  23. Future Enhancements - Electrical • Batteries • Use smaller batteries • Reduces recharge time and size of implant • Use TI Motor Controller • Reduces size of implant • More power efficient • More programming involved • Computer Engineer would be useful… MSD II P13022 Final Presentation

  24. Future Enhancements - Mechanical • External Device Design • Place all external electronics directly inside the existing controller unit if possible. • Use CAD models and rapid prototyping to create a sleek design. • Implementation of a smaller switch system would save a lot of space. MSD II P13022 Final Presentation

  25. Future Enhancements - Mechanical • Internal Device Design • Order custom batteries that are smaller and offer a custom fit • Shrink down the case when electronic upgrades allow for it. • Generate Aluminum smooth “M&M” shaped case through CNC machining. • Use of a gasket to waterproof the design. • Interfacing with P13021 • Consider using common plugs/ports such as USB. • Use epoxy or a strong bonding material to secure the port. • If possible, make the port for the outgoing breakaway cable and the interfacing cable one and the same. MSD II P13022 Final Presentation

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