Vascular access device

A - Human Necessities – 61 – M

Patent

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Details

A61M 29/00 (2006.01) A61M 25/06 (2006.01) A61M 25/09 (2006.01)

Patent

CA 2470502

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).

L'invention concerne un système d'accès vasculaire comprenant une aiguille ayant une pointe distale et une section proximale de fixation, un dilatateur ayant une section distale solide connectée à une section proximale solide et, entre les deux, une cavité annulaire. Le dilatateur a un passage de telle manière que le dilatateur soit coaxialement positionné autour de l'aiguille. L'aiguille présente au moins une ouverture positionnée de manière proximale par rapport à la pointe distale de telle manière que, lorsque l'extrémité distale de l'aiguille entre dans un vaisseau sanguin, le sang pénètre dans la cavité annulaire pour montrer à l'opérateur que l'accès est obtenu. Ce système comprend éventuellement, une gaine ayant une pointe distale, une section proximale de fixation et un lumen suffisant pour être monté coaxialement sur le dilatateur.

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