| 摘要 |
This invention relates to a laryngoscope blade which includes a pair of opposed substantially straight portions so as to form a generally V shaped blade of relatively shallow included angle wherein the blade is substantially L shaped or Z shaped in cross section throughout at least part of its length whereby when said blade is inserted in the patients mouth substantially direct vision of the larynx may be obtained. Preferably the blade is substantially L shaped throughout the major part of it length. The invention also relates to a prism for laryngoscope blade or laryngoscope having a leading end surface, a top surface and a trailing end surface in side view. The leading end surface may slope rearward at an acute angle to horizontal and thereafter emerge into a top surface which also slopes rearwardly, but at a shallower angle to horizontal before forming said trailing end surface. The end surface may slope downwardly from the top surface. The leading end surface may be relatively short in length compared to the top surface and the trailing end surface may be longer than the leading end surface.
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