Patent ID: 6250302
Filing Date: 2001-06-26
Classification: A61M

Abstract:
An apparatus for supplying breathing gas to a patient, the apparatus comprising:a gas mixer configured to generate a fresh gas flow;a valve device positioned to receive the fresh gas flow from the gas mixer, the valve device being operable between a first position and a second position;a ventilator including a bellows connected to the valve device to receive the fresh gas flow from the gas mixer when the valve device is in the second position, wherein the fresh gas flow from the gas mixer drives the bellows such that the bellows generates a ventilator gas flow supplied to the patient as part of the breathing gas; anda control device positioned to operate the valve device between the first position and the second position, wherein the control device moves the valve device to the first position during a first portion of an inhalation phase of each patient breath to divert the fresh gas flow from the gas mixer to the patient and the control device moves the valve device to the second position during a second portion of the inhalation phase of each patient breath to divert the fresh gas flow from the gas mixer to the ventilator to drive the bellows.