Spun out of two Duke labs by three of their best researchers. CEO Tri Vu spent six years in Prof. Yao's Photoacoustic Imaging Lab publishing 10+ papers on the core tech. Co-founder Chenhang Li was Prof. Ni's first-ever PhD graduate - 594 Google Scholar citations in wearable mechano-acoustic sensing.

Two billion peripheral IVs are placed every year and up to half fail before completing therapy - repeat needlesticks, blown veins, delayed treatment, and infections that can kill. Difficult access costs one ER ~$890K/year. Nurses still go by feel; existing ultrasound is 2D and clunky. Lumius gives any clinician real-time 3D vascular maps so the first stick lands.

The core tech is photoacoustic tomography: pulse light into tissue, read the returning ultrasound. A fundamentally richer signal than conventional imaging. The Duke lab published on deep-learning-enhanced PAT and super-deep penetration. Li's wearable sensing work points toward a device form factor far more ergonomic than today's bulky probes.

Lumius, not to be confused with Lumon, is still an unannounced YC X26 company. Yao's lab holds an active NIH grant for photoacoustic-guided catheter placement, the exact clinical use case. If this works, every ER, ICU, and infusion center on Earth becomes a customer - and every patient, a happier one.