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Home » Monteris Medical raises $28M Series E for robotic neurosurgery tech

Monteris Medical raises $28M Series E for robotic neurosurgery tech

March 13, 2026 By Chris Newmarker

Monteris’ NueroBlate system using laser energy through a small hole in the skull.
Monteris’ robotically-controlled NeuroBlate system destroys abnormal brain tissue through a small hole in the skull using laser energy. [Image courtesy of Monteris Medical]
Monteris Medical has closed a $28 million Series E equity financing round as it continues to advance its robotic minimally invasive neurosurgery technology.

Minnetonka, Minnesota–based Monteris also announced yesterday that it has refinanced its current debt and established a new $35 million credit facility with Trinity Capital.

The equity capital will support research and development and other growth initiatives, while the equity financing will back U.S. commercial footprint expansion and accelerate other growth initiatives.

The new investments bring Monteris’ total money raised to roughly $200 million.

Monteris commercialized its NeuroBlate system in 2013. Since then, it has surpassed 9,000 clinical cases and expanded into nearly 130 health systems across North America.  The system provides MRI-guided laser ablation for laser interstitial thermal therapy (LITT), a minimally invasive treatment for complex neurological diseases. LITT offers an alternative to the traditional open-skull (craniotomy) approach for abnormal brain tissue ablation.

The robotically-controlled NeuroBlate system uses laser energy to destroy abnormal brain tissue — including primary and metastatic brain tumors, radiation necrosis and epileptogenic foci — through a small hole in the skull. According to Monteris, Neuroblate is the only FDA-approved LITT system with a robotic platform.

Recently, Monteris scored a reimbursement win involving LITT coverage for more than 9 million military members, veterans and their families enrolled in Tricare.

More about Monteris Medical’s latest equity round

The latest equity round included Monteris’ current lead investors, InnovaHealth Partners and Birchview Capital, along with participation from several new investors, including OSF Ventures, the investment arm of Peoria, Illinois–based OSF HealthCare, and the Colorado University Healthcare Innovation Fund. (The healthcare system venture funds are affiliated with institutions that offer NeuroBlate technology to their patients.) The company’s previous credit facility partner, Madryn Asset Management, is also a major participant in the equity round.

“OSF Ventures looks to invest in organizations that bring meaningful innovation to the clinicians and patients we serve,” Mayank Taneja, VP of Venture Investments at OSF Ventures, said in a news release. “Our clinicians have firsthand experience using Monteris’ technology in practice, and we’re excited to support a company whose evidence-based solutions make a significant impact in the field of minimally invasive neurosurgery. Moreover, our vision of improving the lives of those we serve aligns with Monteris’ mission to deliver hope and healing to the patients, families and care teams who rely on innovations like this.”

Mayank Taneja and Alex Marcantonio, managing director of Madryn Asset Management, have been added to Monteris’ board of directors.

“Monteris continues to build momentum as the preferred partner for neurosurgeons seeking minimally invasive options for patients with brain tumors and drug-resistant epilepsy,” said Richard Emmitt, Monteris’ board chair. “The support from both new and existing investors reflects strong confidence in NeuroBlate technology, Monteris’ strategy and the growing clinical demand for the NeuroBlate solution.”

Filed Under: Business/Financial News, Funding Roundup, Neurological, Robotic-Assisted, Surgical Robotics Tagged With: Monteris Medical, MRI

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About Chris Newmarker

Chris Newmarker is the executive editor of WTWH Media life science's news websites and publications including MassDevice, Medical Design & Outsourcing and more. A professional journalist of 18 years, he is a veteran of UBM (now Informa) and The Associated Press whose career has taken him from Ohio to Virginia, New Jersey and, most recently, Minnesota. He’s covered a wide variety of subjects, but his focus over the past decade has been business and technology. He holds bachelor’s degrees in journalism and political science from Ohio State University. Connect with him on LinkedIn or email at [email protected].

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