Olympus 290 Series Biopsy Channel This biopsy channel is a compatible replacement part for Olympus 290 series flexible endoscopes (GIF-290 CF-290). It provides a smooth, low-friction passage for biopsy forceps and other instruments while protecting internal components from fluids. Key Features Low-friction PTFE inner lining Reinforced stainless steel coil construction Leak tested before shipment Direct-fit replacement, no modification required Specifications Compatible Model