Tricia Cady used to lie in bed awake thinking about babies in her neonatal intensive care ward. NICU babies frequently pull out their breathing tubes and lines, and Cady said she would run over ideas for keeping unplanned extubations at bay. While working on a class assignment several months ago, though, Cady had an idea: a small vest that keeps a baby’s hands free but away from their face and from IV lines and ventilation tubes.