In 2013, I was finishing my bioengineering degree at UC Berkeley when I began my senior thesis. The goal: find a real problem in healthcare and design a solution.

After talking with clinicians across specialties, one tool kept coming up: the stethoscope. It’s iconic, used in nearly every exam, but hadn’t meaningfully changed in 200 years. And because it hadn't changed, signs of heart and lung disease were often going undetected during exams. Not because clinicians weren't listening, but because the stethoscope wasn't giving them the data they needed.

I kept wondering: 
 

What if the stethoscope could do more? 

I teamed up with two classmates — Jason Bellet and Tyler Crouch — and we got to work. What we heard was clear: clinicians didn’t want to give up the tools they trusted. They just wanted them to work harder.

So we built the Eko CORE™: a small attachment that turned an analog stethoscope into a digital one. It even made TIME Magazine’s list of best inventions. Not bad for a class project!

Eko has come a long way since then. We’ve built the world’s largest database of heart sounds and developed FDA-cleared algorithms with accuracy on par with expert cardiologists. We collaborated with Littmann, the world's leading stethoscope brand, to create the 3M™ Littmann® CORE Digital Stethoscope. And today, over 600,000 clinicians use Eko to help screen millions of patients around the world.

Most recently, we launched our most advanced stethoscope yet: the CORE 500™. It brings everything we’ve learned into one powerful, connected device — built to help you hear more, do more, and detect with more certainty than ever before.

We didn’t start Eko to build gadgets. We started it to make a difference. 

Here’s why clinicians keep choosing it.