A British medical professional, Nahaniel Henshaw, proposed what might have been the main hyperbaric chamber for healthcare treatment of individuals in 1662. The metal container was to have been pressurised with air, which at the time wasn't nevertheless known to comprise oxygen, later on found out by Carl Wilhelm Scheele https://hyperbaric-chamber-cost-t51738.howeweb.com/37173069/the-oxygen-chamber-stoke-on-trent-diaries