A gas mixing device for an air-way management system

Abstract

The invention relates to a gas mixing device (10) for an air-way management system. The device has an elongated chamber (C) with a first gas inlet port (1P) being arranged for intake of atmospheric air (AA) into the chamber, the first inlet port being positioned at an end section of the internal chamber. Further, a second gas inlet port (2P) is arranged for intake of a gas (G) into the chamber (C), the second gas inlet port having an injector (INJ) from which the gas can exit into the chamber with an injection direction (ID), the injection direction having a projection (ID_proj) being oppositely directed relative to an in-flow direction (F) of the first gas inlet port (1P) so as to provide mixing of the atmospheric air and the gas. Opposite the first gas inlet port (1P) there is a breathing port (3P) for allowing an individual to breathe through the gas mixing device. The device is beneficial in that the breathing resistance is relatively low while the device simultaneously provides asufficient gas mixing of the gasses to be mixed. Additionally, the invention provides a relatively compact gas mixing device which facilitates easy integration into e.g. a respiration mask for measurements of respiratory parameter of an individual e.g. a patient.

Description

technical field [0001] The present invention relates to a gas mixing device for an individual for use in an airway management system capable of managing one or more gases delivered to the individual. The invention also relates to a tubing forming part of the gas mixing device, a breathing mask or mask comprising the gas mixing device, a breathing system comprising the gas mixing device and the use of the gas mixing device in determining one or more breathing parameters of an individual in the application. Background technique [0002] Oxygen enters the body by inhaling and diffuses from the lungs into the blood. Next, blood circulation delivers oxygen to the tissues. Irregular delivery of oxygen from inhaled air into the blood will cause low oxygen saturation in the blood. Irregularities in oxygen intake include: abnormal ventilation of the lungs, see, eg, COPD; abnormal diffusion of oxygen in the lungs, see, eg, pulmonary fibrosis; and abnormal perfusion through the lung...

AI Technical Summary

Problems solved by technology

However, in order to provide sufficient turbulence, the pores of the device are usually relatively narrow, but this results in a correspondingly high breathing resistance for individuals using mixing devices in conjunction with breathing devices

In addition, the length of the gas mixing device should be about 10 times the aperture diameter to create sufficient turbulence, resulting in a length of the device of 4-10 cm, which makes the gas mixing device very long and not easily compatible with, for example, breathing All-in-one mask

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