Minnesota's Monteris Medical raises $28M for MR‑guided laser ablation

Monteris Medical, a Minnetonka, Minnesota–based medical device company, recently announced they secured $28 million in Series E financing. The company said that the capital will help them expand sales and accelerate product and clinical development for its MR‑guided laser ablation technology. The round was led by InnovaHealth Partners and Birchview Capital, LP. New investors include OSF Ventures, OSF HealthCare and the University of Colorado Healthcare Innovation Fund. In a separate financing move, Monteris refinanced existing debt and established a new $35 million credit facility with Trinity Capital. 

Monteris makes the NeuroBlate System, a magnetic‑resonance‑guided, robotically controlled laser ablation platform used to remove or destroy abnormal brain tissue. The system is used for certain brain tumors and seizure‑causing brain lesions in patients aged two and older, and the company says it is deployed in nearly 130 health systems across North America. Monteris also highlights that NeuroBlate is the only laser interstitial thermal therapy (LITT) platform with a robotic interface and the company indicated this was supported by prospective clinical data. 

MR‑guided laser ablation is part of a broader trend toward minimally invasive neurosurgery. The technique offers an alternative to open craniotomy for select patients, potentially reducing hospital stay and recovery time. Interest in such platforms has grown as hospitals look to expand minimally invasive options for oncology and epilepsy care.