BI-DIRECTIONAL

Nasal drug delivery devices for the nasal delivery of drugs or medications in liquid form in only a single, outward direction through a nosepiece and parts and fittings for the same; oral drug delivery devices for the oral delivery of drugs or medications in liquid form and parts and fittings for the same; nasal drug delivery devices for the nasal delivery of drugs or medications in powder form in only a single, outward direction through a nosepiece and parts and fittings for the same; oral drug delivery devices for the oral delivery of drugs or medications in powder form and parts and fittings for the same; nasal drug delivery nebulizers for the nasal delivery of drugs or medications in only a single, outward direction through a nosepiece and parts and fittings for the same; oral drug delivery nebulizers for the oral delivery of drugs or medications and parts and fittings for the same; nasal spray pump drug delivery devices for the nasal delivery of drugs or medications in only a single, outward direction through a nosepiece and parts and fittings for the same; oral spray pump drug delivery devices for the oral delivery of drugs or medications and parts and fittings for the same; and intranasal drug delivery devices for the nasal delivery of drugs or medications in only a single, outward direction through a nosepiece and parts and fittings for the same; parts and fittings for intranasal delivery devices for the nasal delivery of drugs or medications in only a single, outward direction, namely, nosepieces