VENTILATOR COMPRISING A SINGLE STAGE, AXIAL SYMMETRIC BLOWER

摘要

A ventilator (500) comprises a blower (510) including a housing (220) with a proximal opening (523) and a distal opening (525), a stator component (530) provided to the housing, an impeller (560) positioned between the proximal opening of the housing and the stator component, a motor (540) adapted to drive the impeller, and a passive valve assembly (501) structured to allow air to flow through the blower along a flow path in both directions. The proximal opening is configured to act as an inlet for airflow to the patient for inspiration and as an outlet for expired air from the patient during expiration, and the distal opening is configured to act as an outlet for airflow to the patient for inspiration and as an inlet for expired air from the patient during expiration. The ventilator may further comprise a heat and moisture exchange filter (580) and a mucous trap (575).