Historical information
The dilator is designed to fascilitate the tracheostomy tube into the trachea via the initial incision
http://entinstruments.blogspot.com.au/2011/07/trousseaus-tracheal-dilator.html#!/2011/07/trousseaus-tracheal-dilator.html
Physical description
Curved end stainless steel percutaneous dilator
Inscriptions & markings
"STAINLESS STEEL"
"Martin"
"568"