This type of anesthetic masks is specifically designed to fit most stereotaxic frame and deliver anesthetic gases with minimal exposure during surgery. They are locked onto the adaptor with the cone opening toward the open “U”. The animal’s teeth is placed over the incisor bar.
Two kinds of Stereotaxic Frame Nosecone Masks are available: one is “passive” mask with collinear inlet and outlet, and the other one is “active” mask with separate (non-collinear) inlet and outlet on both sides. Tthe “passive” mask is used with charcoal canister only, and the “active” mask can be used with evacuation apparatus.