Robert Reynolds Macintosh (1897-1989), New Zealand-born anaesthetist, became the first British Professor of Anaesthetics in Oxford in 1937. He designed his laryngoscope, spray, endobronchial tube and vaporiser.
The tongue, web and flange form a reverse Z shape in cross-section. It is the most commonly used blade in the UK. The curvature of the blade allows the tip to fall naturally into position in the vallecula of the patient and the wide flange assists in holding the tongue safely aside during intubation. A ‘left-sided’ version is available. It is used in patients with right-sided facial deformities making the use of the right-sided blade difficult.