https://techcrunch.com/2021/09/30/activ-surgical-raises-45-million-series-b-round-to-give-surgeons-eagle-eyes/

Activ Surgical, a Boston-based digital surgery company, announced a $45 million Series B round on Thursday. The round comes during a critical year for Activ Surgical. It’s in the process of developing new tools that give surgeons the ability to see otherwise invisible structures, and has plans to roll out those tools in the coming months. 

The first of those tools is the company’s hardware component, called ActivSight, which allows surgeons to see things that would otherwise be invisible, like blood flow through microscopic vessels inside tissue. The hardware, which received FDA 510(K) clearance in April of 2021, fits between any type of endoscope and a white light camera system.