LAYERED NASAL DEVICES

摘要

Described herein are nasal devices. In particular, layered nasal respirat ory devices are described. Layered nasal device may include a layered airflo w resistor that is configured to resist airflow in a first direction more th an airflow in a second direction and that includes a flap valve adjacent to a flap valve limiting layer and an adhesive holdfast layer that is configure d to secure the layered airflow resistor in communication with the subject's nasal cavity. Methods of using and methods of assembling layered nasal devi ce are also described.