My small business modernized a 2,000-year-old tourniquet. We've already sold hundreds of kits through word of mouth.

Hannah Herbst is the CEO of Golden Hour Medical.

Jennifer Ortiz for BI

• Golden Hour Medical develops products to help bystanders in emergencies.
• Its automatic tourniquet provides an easy-to-follow audiovisual guide for controlling bleeding.
• Community outreach and word of mouth have helped the company grow organically across industries.

This as-told-to is based on a conversation with Hannah Herbst, CEO of Golden Hour Medical, a Boca Raton, Florida, company that created AutoTQ...