Latest on the ART device of Israel’s Inspira Technologies (see here previously) to instantly boost oxygen levels of patients having trouble breathing, reducing the need to induce comas and place them on ventilators. The machine removes low oxygen blood from the body, adds oxygen, removes CO2, and returns it to the patient.
https://nocamels.com/2023/01/oxygen-boosting-device-provides-immediate-relief-to-patients/