Armstrong, Nikaido, Marmelstein & Kubovcik
Artificial lung
 An artificial lung having first and second oxygen blowing stages formed therein. The device comprises an outermost blood reservoir tube having top and bottom walls formed thereon, a plurality of oxygenation tubes disposed coaxially with the blood reservoir tube defining passages for blood therebetween, a first oxygen blowing stage formed under the oxygenation tubes for blowing oxygen gas into the blood introduced through an inlet for blood and a second or auxiliary oxygen blowing stage formed around the first oxygen blowing stage. 
Japan Medical Supply Co., Ltd.
Y Y A A
Y10S Y10S A61M A61M
additional additional inventional inventional
Motoji
Kurata