A British doctor, Nahaniel Henshaw, proposed what would have been the 1st hyperbaric chamber for medical treatment of humans in 1662. The steel container was to are actually pressurised with air, which at time wasn't still known to have oxygen, later uncovered by Carl Wilhelm Scheele all over 1770 and https://oxygen-therapy-cost74951.bloggosite.com/43654398/hyperbaric-chamber-cost-near-me-fundamentals-explained