PROBLEM TO BE SOLVED: To solve the problem that much of medical gas escapes to outside air without being taken by a patient.SOLUTION: A medical gas supply device for a living body includes a body part mounted on the ear, and a medical gas supply part for supplying medical gas to the body part. The body part is communicated with the inside of the ear and mounted on the ear so as to form a space isolated from outside air, and the medical gas supplied from the medical gas supply part to the space is supplied to the inside of the ear.SELECTED DRAWING: Figure 3【課題】医療用ガスの多くが患者に取り込まれないで外気に逃げてしまう。【解決手段】本発明の生体用医療用ガス供給装置は、耳に装着される本体部と、本体部に医療用ガスを供給する医療用ガス供給部とを備え、本体部は、耳の内部に連通し且つ外気と仕切られた空間を形成するように耳に装着され、医療用ガス供給部から空間内に供給された医療用ガスが、耳の内部に供給される。【選択図】図３
