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1. (WO2003057272) VASCULAR ACCESS DEVICE

Pub. No.:    WO/2003/057272    International Application No.:    PCT/US2002/041371
Publication Date: Jul 17, 2003 International Filing Date: Dec 24, 2002
IPC: A61B 17/32
A61M 5/178
A61M 25/00
A61M 25/08
Applicants: YALE UNIVERSITY
TAL, Michael
Inventors: TAL, Michael
Title: VASCULAR ACCESS DEVICE
Abstract:
A vascular access system comprises a needle (104) having a distal tip and a proximal fitting section and a dilator (114) having a solid distal section connected to a solid proximal section and an annular recess therebetween, the dilator (114) having a passageway so that the dilator (114) is coaxially positioned around the needle (104). The needle (104) has at least one opening positioned proximal to its distal tip so that, when the distal end of the needle (104) enters a blood vessel, blood enters the annular recess to show the operator that access has been achieved. Optionally, a sheath (160) having a distal tip, a proximal fitting section, and a lumen sufficient to coaxially fit over the dilator (114).