The road to success has been long and grueling, but it’s not over for Patrik Schmidle, CEO and co-founder of CARI Health. He’s leading a medical device company to tackle a big problem — the opioid crisis.

Their proposed solution is tiny. CARI Health is developing a wearable device the size of a quarter to help people in treatment for opioid use disorder.

But to Schmidle, this isn’t just an intangible national problem — it’s personal. He had a family member struggle with opioid use, which inspired him to start this company.