The San Antonio-based company has raised $54.3 million so far, according to a post in the Wall Street Journal.
The investment came from Brandon Point Industries Limited and existing investors Battery Ventures, Targeted Technology Fund II and RK Ventures.
Xenes plans to use the funds for product development, international expansion and to hire more employees. Xenex currently has about 120 employees.
Xenex created a mobile robot that looks like R2D2 that rolls into a hospital room and sends out pulsated ultraviolet rays that kills viruses, bacteria, mold, fungus and bacterial spores.
“Hospital acquired infections are a global problem and we have proven that the use of our germ- zapping robot provides a cleaner, and therefore safer healthcare environment,” Morris Miller, CEO of Xenex said in a news release.
More than 250 hospitals and other healthcare facilities are using Xenex’s technology.