Disclosed are an overheating sensor adapter and an oxygen concentrating device, the overheating sensor adapter capable of reliably detecting an overheated environment and ensuring safety when a patient is exposed to fire or an abnormally overheated environment while inhaling oxygen via a cannula, as well as capable of being retrofitted to an oxygen concentrating device already in use. An overheating sensor adapter (300) is a cannula (22) mounted on an oxygen concentrating device, the oxygen concentrating device comprising an oxygen discharge port unit (15) for supplying concentrated oxygen. The overheating sensor adapter (300) comprises: a main body unit, further comprising a first end part that connects to the oxygen discharge port unit and a second end part that connects to a cannula that delivers the concentrated oxygen to a user an overheating sensor unit that senses overheating of the cannula an oxygen path (303) that makes the first end part (303A) communicate with the second end part (303B) an oxygen shut-off unit that shuts off the concentrated oxygen supply and a controller unit (310) that applies a directive to the oxygen shut-off unit to close the oxygen path and shut off the concentrated oxygen supply when the temperature sensed by the overheating sensor unit reaches or exceeds a predetermined temperature.La présente invention se rapporte à un adaptateur de capteur de surchauffe et à un dispositif de concentration doxygène, ladaptateur de capteur de surchauffe pouvant détecter de façon fiable un environnement en surchauffe et assurer la sécurité lorsquun patient est exposé au feu ou à un environnement anormalement en surchauffe tout en inhalant de loxygène par lintermédiaire dune canule, et pouvant être monté sur un dispositif de concentration doxygène qui est déjà en fonctionnement. Un adaptateur de capteur de surchauffe (300) est une canule (22) montée sur un dispositif de concentration doxygène, le dispositif de concentration doxygène comprenant un mo
