He could have been surfing in Cabo. Instead, Tyler Crouch, then a 21-year-old mechanical-engineering student, spent spring break of 2013 building a digitized stethoscope and thinking, “This better be worth it.”

Since then, he and two classmates from the University of California, Berkeley, have formed a company — Eko Devices, which is based here — raised nearly $5 million and sold 6,000 digital stethoscopes, used in 700 hospitals. The wireless stethoscopes can transfer a patient’s heart rate and other vital signs directly to Eko’s secure portal, where it can, among other things, be shared with other doctors for a second opinion.

Now they have built something with a potentially larger market: It is the Duo, a digital stethoscope for home use, which could change how heart patients are monitored, the entrepreneurs say. It is scheduled to become available by prescription in the fall.

Continue reading at: https://www.nytimes.com/2017/08/09/business/heart-and-asthma-monitors-theres-an-app-for-that.html