Patent ID: 7008380
Filing Date: 2006-03-07
Classification: A61B,A61M

Abstract:
1. A device for determining one or more respiratory parameters relating to an individual, comprising a gas flow device having means for conducting a flow of inspiratory gas from an inlet opening to the respiratory system of the individual and a flow of expiratory gas from the respiratory system of the individual to an outlet opening, a gas-mixing unit for supplying a substantially homogeneous gas to the inlet opening of the gas flow device, first supply means for supplying a first gas to an inlet of the gas mixing unit and having first control means for controlling the flow of the first gas, second supply means for supplying a second gas having an oxygen fraction different to the gas supplied from the first supply means to an inlet of the gas mixing unit and having second control means for controlling the flow of the second gas, a computer for determining said one or more respiratory parameters, first detection means for detecting the level of oxygen (SaO second detection means for detecting the level of oxygen (FIO the computer being adapted for retrieving and storing at least two measurements being the concurrent output produced by the first detection means and the second detection means within a data structure, in which the two stored outputs are mutually related, in data storage associated with the computer, the at least two measurements being conducted at corresponding levels of oxygen in the gas flow passing into the respiratory system, the computer further being adapted for determining at least two respiratory parameter (Rdiff, shunt,