▁alternate ▁air ways . ▁ ▁In vent ions ▁ ▁Rap id ▁assess ment ▁and ▁management ▁of ▁resp ir atory ▁structure ▁and ▁function ▁are ▁imper ative ▁in ▁emer gency ▁int ub ation . ▁End ot rache al ▁int ub ation ▁remains ▁the ▁gold ▁standard ▁in ▁air way ▁maintenance . ▁However , ▁end ot rache al ▁int ub ation ▁may ▁be ▁impossible ▁due ▁to ▁difficult ▁circumstances ▁with ▁respect ▁to ▁space ▁and ▁ill um ination ▁or ▁an atom y ▁even ▁for ▁sk illed ▁phys icians . ▁Therefore , ▁the ▁need ▁ar ises ▁for ▁a ▁simple ▁and ▁efficient ▁alternative . ▁The ▁Com bit ube ▁was ▁designed ▁with ▁this ▁goal ▁in ▁mind . ▁ ▁Fr ass ▁is ▁the ▁invent or ▁of ▁the ▁Com bit ube , ▁a ▁tw in ▁l umen ▁device ▁designed ▁for ▁use ▁in ▁emer gency ▁situations ▁and ▁difficult ▁air ways . ▁He ▁has ▁published ▁several ▁papers ▁on ▁this ▁topic . ▁ ▁References ▁ ▁Category : A ust rian ▁intern ists ▁Category : A ust rian ▁home op ath s ▁Category : 1 9 5 4 ▁birth s ▁Category : L iving ▁people <0x0A> </s> ▁K rag nes ▁( also ▁K rag ness ) ▁is ▁an ▁un in cor por ated ▁community ▁in ▁K rag nes ▁Township , ▁Clay ▁County , ▁Minnesota , ▁United ▁States . ▁ ▁Notes ▁ ▁Category : Un in cor por ated ▁communities ▁in ▁Clay ▁County , ▁Minnesota ▁Category : Un in cor por ated ▁communities ▁in ▁Minnesota <0x0A> </s> ▁Ach ol la ▁amp li ata ▁is ▁a ▁species ▁of ▁assass in