| http://www.w3.org/ns/prov#value | - ing to an embodiment of the present invention. [0020]FIG. 6 is a perspective view of a tracheal insertion device comprising the tracheostomy tube of FIG. 3 and the dilator of FIG. 5. [0021]FIG. 7 is a perspective view of a dilator including apparatus for locking the dilator with a tracheostomy tube. [0022]FIG. 8 is a perspective view of the dilator of FIG. 7 in combination with a tracheostomy tube
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