PROBLEM TO BE SOLVED: To provide a supply implement for a gas for inhalation, capable of preventing drying of the nasal cavity and nosebleed due to the contact of the supply implement with the mucous membrane of the nasal cavity, making it possible to inhale oxygen even during oral respiration without being affected by the disturbance of winds or the like, being easily mounted and surely supplying an oxygen enriched gas.SOLUTION: The mask 12 for supplying the gas for inhalation is provided with a dome-like partition wall to be in contact with the outer peripheral surface of the external nose of a user for covering the external nose. An inhalation gas feeding port 13 for feeding the gas for inhalation is provided on the partition wall, and an inhalation gas feeding means 10 for feeding the gas for inhalation from the inhalation gas feeding port 13 to a space part existing at the lower part of the nasal ala part to the nasal apex part of the user is provided.COPYRIGHT: (C)2007,JPO&INPIT【課題】鼻腔乾燥、供給用具の鼻腔粘膜接触による鼻出血を防止し、風などの外乱に影響を受けることなく、口呼吸時にも酸素吸入が可能で、装着しやすく、確実に酸素富化ガスを供給することが可能な吸入用ガス供給用具を提供する。【解決手段】使用者の外鼻外周面に接し、外鼻を覆うドーム状の隔壁を備えたマスク12であり、該隔壁に吸入用ガスを投入する為の吸入用ガス投入ポート13を備え、該吸入用ガス投入ポート13から使用者の鼻翼部乃至鼻尖部の下方に存在する空間部に該吸入用ガスを投入する吸入用ガス投入手段10を備えることを特徴とする吸入用ガス供給用マスク。【選択図】図2