Patent ID: 6120494
Filing Date: 2000-09-19
Classification: A61B,A61M

Abstract:
A method for inserting a cannula in a blood vessel, the method comprising:providing a cannula assembly including a cannula, a dilator, a needle and a guide wire, the dilator being telescopically received in a lumen of the cannula and having a passage formed therein, the needle and the guide wire being disposed in the passage of the dilator, the dilator further including a dilator tip being disposed at a distal end and having an opening formed therein;advancing the cannula assembly with the needle extended through the opening of the dilator tip a predetermined distance through the outer wall of the blood vessel, the needle forming an incision in the blood vessel;retracting the needle from the dilator tip;extending the guide wire through the opening of the dilator tip and into the incision;advancing the dilator and cannula over the guide wire and into the incision; andremoving the dilator, needle and guide wire from the cannula.