Johns Hopkins biomedical engineering students have designed a lightweight, easy-to-conceal shirt-like garment to deliver life-saving shocks to patients experiencing serious heart problems. The students say their design improves upon a wearable defibrillator system that is already in use. The undergraduates who developed this defibrillator vest included, from left, Quinn Salditch, Caitlin Romanczyk, Melinda Chen, Sandya Subramanian, Ernest So, Billy Kang and Akash Premkumar. Missing from photo: team member Taylor Lam. (Credit: Will Kirk)

In students’ prototype defibrillator vest, the conductive textile cloth for the shocking electrodes is sewn into the back of the garment, where the two light gray rectangles can be seen. (Credit: Will Kirk)

This blue box, the team’s prototype user interface, is worn on the wrist like a watch. It communicates wirelessly with the garment and displays information on the screen. (Credit: Will Kirk)

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