Rigid endoscope accessory that helps ENT surgeons maintain maximum visualization at the surgical site during nasal and sinus endoscopic surgery, without removing the endoscope. An Endo-Scrub 2 Sheath delivers a high-power burst of irrigation to flush debris out of the endoscope lens tip. Endo-Scrub 2 Lens Cleaning Sheaths significantly improve the ability to operate in the presence of bleeding during ENT surgery.