Bututun endotracheal bututu ne mai sassauƙa wanda aka sanya ta baki zuwa cikin bututun iska (gudun iska) don taimakawa majiyyaci numfashi. Sannan ana haɗa bututun endotracheal zuwa na'urar iska, wanda ke isar da iskar oxygen zuwa huhu. Hanyar shigar da bututu ana kiransa intubation endotracheal. Har yanzu ana la'akari da bututun Endotracheal a matsayin na'urorin 'daidaitan gwal' don kiyayewa da kare hanyar iska.