Section: News

Xenex Germ-Zapping Robots™ Helping Queen of the Valley Medical Center to Destroy Germs and Bacteria


Napa, Calif. (April 26, 2017) –Queen of the Valley Medical Center has taken a leap into the future, using two innovative germ-zapping robots to destroy deadly pathogens and kill multi-drug resistant organisms that cause hospital acquired infections. The two robots, named Stefan and QVR2 by Queen of the Valley Medical Center caregivers, use Full-Spectrum™ pulsed xenon ultraviolet (UV) light to quickly destroy harmful bacteria, viruses, fungi and bacterial spores in hard-to-clean places.

The portable disinfection system is effective against pathogens, including Clostridium difficile (C. diff), norovirus, influenza, Ebola and methicillin-resistant Staphylococcus aureus, better known as MRSA. The robots are being used to disinfect surgical rooms, the ER, patient rooms and more.

“We are excited to use the Xenex system to help us achieve our goal of zero infections. This investment is important and underscores our commitment to patient care and the communities we serve,” said Larry Coomes, Chief Executive.

The disinfection system works by pulsing xenon, an inert gas, at a high intensity in a xenon ultraviolet flashlamp. This produces intense ultraviolet C (UVC) light which penetrates the cell walls of microorganisms, including bacteria, viruses, mold, fungus and spores. Their DNA is fused, rendering them unable to reproduce or mutate, effectively killing them on surfaces without contact or chemicals. Each treatment takes about five minutes, or approximately 25 minutes per room.

The robot has been tested and proven using independent lab verification and has been credited by health care facilities across the U.S. for helping them reduce their infection rates significantly.

Queen of the Valley began using the Xenex robot early in 2016. By the second half of 2016, the Xenex cleaning program was fully in place, with environmental services staff trained to consistently use the Xenex machine as part of the terminal cleaning process. From July 2016 to December 2016, the Queen decreased rates of C. Diff by 47.3 percent, when compared to the same period in 2015.

More than 300 hospitals, Veterans Affairs and DoD facilities in the U.S., Canada, Africa and Europe are using Xenex robots, which are also in use in skilled nursing facilities, ambulatory surgery centers and long term acute care facilities.

About Queen of the Valley Medical Center
Queen of the Valley Medical Center is a 208-bed, acute-care facility founded by the Sisters of St. Joseph of Orange. The Queen is the largest health care facility and one of the largest employers in Napa County. Services provided include a Regional Heart Center, a Regional Orthopedic Center, a Regional Cancer Center approved with commendations by the American College of Surgeons, the Peggy Herman Neuroscience Center, maternity and infant care, inpatient and outpatient minimally invasive surgery, and full-service emergency department, among many other specialty services. More information about Queen of the Valley Medical Center can be found at

Xenex Disinfection Services
Xenex’s patented Full SpectrumTM pulsed xenon UV room disinfection system is used for the advanced disinfection of healthcare facilities. Due to its speed and ease of use, the Xenex system has proven to integrate smoothly into hospital cleaning operations. Xenex’s mission is to save lives and reduce suffering by eliminating the deadly microorganisms that cause hospital acquired infections (HAIs). The company is backed by well-known investors that include Malin Corporation/BrandonPoint, Battery Ventures, Targeted Technology Fund II and RK Ventures. For more information, visit

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