| Summary: | Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, September, May, 2020 === Cataloged from the official PDF of thesis. Thesis also published in: Serena Grown-Haeberli, Healey Montague-Alamin, Alexander Slocum, Nevan Hanumara, Aaron Ramirez, Jay Connor, Gim Hom, Peter Pott and Kent Stewart. "Design and Applicability of a Mechanical Impedance Sensor for Vein Penetration Detection." 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 2020, pages 4016-4019, doi: 10.1109/EMBC44109.2020.9175501. === Includes bibliographical references. === Intravenous needle insertion is typically conducted manually, with needles guided into vessels by feel while looking for a brief flash of blood. This process is imprecise and leads to mispositioned needles, multiple reinsertion attempts, increased procedure time and higher costs for the hospital. We present a method for indicating that the needle has reached the vein by measuring the change in mechanical impedance of the needle as it passes through different tissue layers. Testing in a phantom indicated that this has the potential to identify transitions through tissue boundaries. === by Serena Grown-Haeberli. === S.B. === S.B. Massachusetts Institute of Technology, Department of Mechanical Engineering
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