US Patent 11344695 Gas flow arrestor

A gas flow arrestor is provided that is configured to be coupled at one end to an oxygen concentrator, a VIPR type device associated with a compressed gas cylinder, or other gas delivery component such as a regulator or flowmeter and at the opposing end to a length of flexible tubing or hose that delivers the medical gas to the patient or patient breathing apparatus, such as a nasal cannula or breathing mask. The gas flow arrestor device includes a firebreak together with a visual flow indicator that is actuated by the flow of gas through the gas flow arrestor device. The visual flow indicator allows a user or patient to visually confirm from a distance whether or not gas is flowing to the patient or breathing apparatus.