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a Details of the new puncture needle (on top) with a maximum diameter of 2.5 mm and the trocar part of the Provox trocar and cannula (maximum diameter 5 mm); note the clear difference in outer diameter and sharpness. b Details of the dilator with the pre-loaded voice prosthesis and the special silicone loop around the shaft of the VP for the delivery of the tracheal flange of the voice prosthesis through the TEP tract
