 By the mid @-@ 1980s , the flexible fiberoptic bronchoscope had become an indispensable instrument within the <unk> and anesthesia communities . The digital revolution of the 21st century has brought newer technology to the art and science of tracheal intubation . Several manufacturers have developed video laryngoscopes which employ digital technology such as the CMOS active pixel sensor ( CMOS APS ) to generate a view of the glottis so that the trachea may be intubated . 
