Today , the conventional laryngoscope consists of a handle containing batteries with a light source , and a set of interchangeable blades .
Since its introduction by Kirstein in 1895 , the conventional laryngoscope has been the most popular device used for this purpose .
Today , the conventional device consists of a handle containing batteries with a light source , and a set of interchangeable blades .
Since its introduction by Kirstein in 1895 , the conventional laryngoscope has been the most popular device used for this purpose .