** Shares of Medical device maker Microbot Medical MBOT.O rise 4% to $1.87 premarket

** Co signs deal with Lovell Government Services to supply Liberty, a robotic device for minimally invasive blood vessel procedures

** Says Liberty is a single-use, remotely operated system that helps doctors perform vascular procedures with more precision

** Co says deal opens access to U.S. federal healthcare systems including veterans, military and Native American hospitals

** Says device expected to be available via federal supply contracts in Q3 2026

** Says partnership aims to improve adoption and streamline sales through government platforms

** As of last close, stock down ~9% YTD