Crosstex Accutron Pip+™ Nasal Masks. Accutron's Personal Inhaler Plus (PIP+™) Single-Use Nasal Masks provide your patients with reliable and comfortable nitrous oxide delivery while minimizing the potential for cross contamination. The lightly scented and brightly colored nasal masks set the standard when it comes to conscious sedation therapy and patient care. Unscented PIP+™ nasal masks are also available.