Fan assembly for a rebreathe system

摘要

A circulation system for use in a rebreathe system includes a base and a fan assembly coupled to the base. The base includes a motor and a rotatable drive shaft coupled to the motor. The fan assembly includes a housing with an inlet and outlet. The fan assembly further includes a fan coupled to the drive shaft to rotate therewith and is fluidly isolated from the drive shaft.

主权项

1. A rebreathe system for pulmonary function testing, comprising:
a breathing valve assembly configured to be fluidly coupled to a patient; a flow control assembly coupled to the breathing valve assembly, the flow control assembly comprising an expire-only valve and an inspire-only valve, wherein when a rebreathe test is active, a gas exhaled by the patient flows out only through the expire-only valve and gas inhaled by the patient is provided only through the inspire-only valve; a reservoir coupled to the expire-only valve and configured to receive the exhaled gas from the expire-only valve; a carbon dioxide absorber comprising an outlet coupled only to the inspire-only valve of the flow control assembly and an inlet; and a circulation system, comprising:
a base comprising a motor coupled to a first magnetic coupling plate; anda fan assembly coupled to the base and comprising:a housing comprising an inlet coupled to the reservoir and an outlet coupled to the inlet of the absorber;a fan disposed within the housing and fluidly isolated from the motor; anda second magnetic coupling plate fixedly coupled to the fan and magnetically coupled to the first magnetic coupling plate, wherein operation of the motor rotates the fan so as to pull the exhaled gas from the reservoir and push the exhaled gas through the absorber.