Medico-surgical apparatus

Details Medico-surgical apparatus Medico-surgical apparatus

A - Human Necessities

61

M

A61M 29/00 (2006.01) A61M 16/04 (2006.01)

Patent

CA 2411656

Known percutaneous tracheostomy dilators are inserted over a cannula previously introduced into the trachea on a hollow metal needle. In the present invention, the dilator is of plastics with a narrow, flexible patient end portion, a tapering intermediate portion and a substantially rigid, wider rear portion. The dilator is inserted on a needle the tip of which projects from the patient end of the dilator when the needle hub abuts the rear end of the dilator so that the patient end of the assembly can be pushed into the trachea. The length of the patient end portion of the dilator is such that the tip of the needle is spaced from the posterior wall of the trachea when the tapered portion of the dilator abuts the surface of the skin. After insertion, the needle is replaced with a guidewire so that the dilator can be pushed in further to expand the opening.

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