A ventilator comprising a blower and a valve assembly

摘要

Disclosed is a ventilator system (10) for delivery of respiratory therapy to a patient. The system (10) includes housing with a first opening that acts as an inspiration inlet for airflow to the patient for inspiration and acts as an expiration outlet for expired air from the patient during expiration. The housing also has a second opening that acts as an inspiration outlet for airflow to the patient for inspiration and acts as an expiration inlet for expired air from the patient during expiration. A blower receives air from the first opening and provides pressurized air to the second opening. The ventilator system (10) further includes a passive valve assembly structured to allow air to flow through the blower along a flow path from the first opening to the second opening, and from the second opening to the first opening. The blower is positioned between the first opening and the second opening.