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Vanderbilt University Department of Biomedical Engineering Fetal Stabilizer Design. Mentor: Dr. Joseph Bruner, M.D. By Pankaj Desai Sandhya Mani Also with Faizel Kassam & Thomas Hughes. What is Spinabifida ? ? ?.
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Vanderbilt UniversityDepartment ofBiomedical EngineeringFetal Stabilizer Design Mentor: Dr. Joseph Bruner, M.D. By Pankaj Desai Sandhya Mani Also with Faizel Kassam & Thomas Hughes
What is Spinabifida ? ? ? • Most frequently occurring permanently disabling birth defect in the U.S. • Results from failure of spine to close during 1st month of pregnancy • Results • bowel and bladder complications • possible loss of muscle control beneath lesion • obesity • skin breakdown • Hydrocephalus • shunt
Spinabifida Detection • Age: 16 - 18 weeks • Tests: • MSAFP - maternal serum alpha-fetoprotein • 2 - 2.5 times normal levels • not very accurate • other causes of high levels: • Ultrasound • rule out other causes • if no result then: • AFAFP - amniotic fluid alpha-fetoprotein • AFAChE - amniotic fluid acetlcholinesterase • both used to provide confirmation of neural tube defect
Fetal Surgery • Risks/”No Guarantees” of Procedure • premature delivery • possible damage • Effect of Tool • 36 open fetal repairs completed (01/08/99) • reduce clutter in surgical field • sterile positioning of fetus
Tool Specifications • Targeted Age Group • Exact Dimensions • limited to 20cm in length • width of fetus at position: 9cm • Physical Properties • light-weight • Flexible yet Sturdy • easy to clean
Actual Design & Implementation • Johnsona & Johnson • Codman Engineering • why??? • AutoCad Drawing • 3-Dimensional Picture • Extrapolation • Piece by piece design • Printing Problems • Exact Dimensions
Final Design 8.5 cm 19.5 cm 5.4 cm 10.5 cm
Other Views • Side and Top Views
Future Goals • Video Clip • Working Prototype • Additional Links