< Topic >Dead end-type sucking/absorbing set and its assistant air structure which suppress the break-through of the oxygen which is supplied are offered.SolutionsDead end-type sucking/absorbing set, to the terminal area 110 where the aperture the both ends respectively is jointed to the windpipe the tube itself which forms the discharge section 120 of opposite end side 100, oxygen supply branching tube 200, the perforation hole the scraper 310,320 which provides 311 which the sucking/absorbing tube the Interpolation is done and 321, has the flooding pipe which supplies the wash water, provides the assistant air unit 331 which introduces the air with the oxygen supply branching tube and the scraper. Pulling out the sucking/absorbing tube, the occasion where you exchange, introducing the air from the aperture of assistant air unit, it eases the vacuum by the sucking/absorbing tube, it decreases the break-through of the oxygen which is supplied from the oxygen giving branching tube.< Choice figure >Drawing 2【課題】供給される酸素の漏出を抑制する密閉式吸痰セット及びその補気構造を提供する。【解決手段】密閉式吸痰セットは、両端の開口がそれぞれ気管に接続される接続部110と反対端側の排出部120をなす管状本体100、酸素供給分岐管200、吸痰管を挿通する貫通孔311、321を設けたスクレーパ310,320、洗浄水を供給する注水管を具え、酸素供給分岐管とスクレーパとの間に外気を導入する補気ユニット331を設ける。吸痰管を引き出して交換する際に、補気ユニットの開口から外気を導入して吸痰管による負圧を緩和し、酸素給分岐管から供給される酸素の漏出を低減する。【選択図】図2
