FDA granted HeartBeam a Breakthrough Device designation for assessing heart attacks outside a hospital. The Santa Clara company announced it on October 5.

The HeartBeam recorder is about the size of a credit card. It captures cardiac electrical signals along three non-coplanar axes, then synthesizes a clinical-grade 12-lead ECG from them. FDA cleared the 3D ECG hardware for arrhythmia assessment in December 2024 and the 12-lead synthesis software in December 2025. Myocardial infarction is a new indication, not an extension of either clearance.

HeartBeam says it will meet FDA on study design in the coming months and enroll patients after that. Breakthrough status buys earlier and more frequent agency interaction, not a smaller trial. An MI indication read outside a clinical setting will need evidence that the synthesized leads hold up against a standard 12-lead at the moments that matter.