Naspira filter replacements-30ct. Neilmed naspira is our innovative, uniquely designed nasal-oral aspirator system that can be used as both a highly effective nasal-oral aspirator and as a traditional bulb syringe. As an aspirator, naspira allows caretakers to create strong and continuous oral suction to effectively remove mucus from little noses. Its unique design contains an in-line filter to protect you from contact with mucus and germs from your child, and a one-way valve that prevents air from entering your child's nose.