Operating Theatres

Reduce Risk of Surgical Site Infections

Surgical site infections (SSIs) are caused by bacteria that get in through incisions made during surgery. SSIs lead to more than 90,000 deaths each year, 50% of which are estimated to be preventable. One of the main sources of contamination is particles released into the air by operating room personnel. Small microorganisms and viruses “ride” on these particles and enter through open wounds or inhalation leading to disease and infection.


  • HEPA filtration is not installed in the HVAC system
  • Ventilation is inadequate (<15 total ACH)
  • HEPA filters are installed but not regularly replaced
  • HVAC air vents are not regularly cleaned
  • Reliance for infection control is on laminar air flow systems
  • Patients are vulnerable to secondary infections, particularly from pulmonary, airborne pathogens
  • Powerful odors are generated from medical procedures, cleaning chemicals, or patients


  • Rapidly restores a safe operating environment
  • Adsorbs odour from laser plumes and surgical smoke (Defend 1050)
  • Augments HVAC systems without adequate airflow
  • Easily moved by staff between operating theatres