Laryngeal mask airway device with airway tube having flattened outer circumference and elliptical inner airway passage
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[0034]FIGS. 5A and 5B show perspective and side views, respectively, of a laryngeal mask airway device 500 constructed according to the invention when no external forces are acting on the device. FIG. 5C shows a side view of the shape assumed by device 500 when in the fully inserted configuration. So, FIGS. 5A and 5B show the resting shape of the device's airway tube and FIG. 5C shows the inserted shape of the device's airway tube. As shown, device 500 has many features in common with prior art device 100. However, instead of airway tube 110, device 500 includes an improved airway tube 510. FIG. 6A shows a sectional view of airway tube 510 taken along line 6A-6A as shown in FIG. 5B. FIG. 6B shows a sectional view of tube 510 taken along line 6B-6B as shown in FIG. 5C. So, FIGS. 6A and 6B show sectional views of resting and inserted shapes, respectively, of the airway tube 510.
[0035] As discussed in greater detail below, the airway tube 510 is distinct from prior art airway tube 110...
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