Patent ID: 9199050
Filing Date: 2015-12-01
Classification: A61M

Abstract:
1. An arrangement for guiding expired respiratory gas flow in a breathing circuit through a housing assembly configured to remove an undesired expired gas component of the expired respiratory gas flow before an inspiration of a subject, the housing assembly having a first port and a second port, one of the first port and the second port configured to receive the expired respiratory gas flow and another of the first port and the second port configured to discharge the expired respiratory gas flow, the arrangement comprising: a gas routing device in flow communication with the breathing circuit and the housing assembly through the first port and the second port, the gas routing device comprising a first routing path and a second routing path, the gas routing device configurable between at least two different route options, wherein the first routing path is connected to the first port of the housing assembly and the second routing path is connected to the second port of the housing assembly in a first route option of the at least two different route options such that the gas routing device is configured to guide the expired respiratory gas flow through the first routing path to the first port of the housing assembly, through the housing assembly to the second port of the housing assembly, and through the second routing path to the breathing circuit for the inspiration, and wherein the second routing path is connected to the first port of the housing assembly and the first routing path is connected to the second port of the housing assembly in a second route option of the at least two different route options such that the gas routing device is configured to guide the expired respiratory gas flow through the first routing path to the second port of the housing assembly, through the housing assembly to the first port of the housing assembly, and through the second routing path to the breathing circuit for the inspiration.