Vent for flashback plug

Details Vent for flashback plug Vent for flashback plug

A - Human Necessities

61

M

128/93

A61M 5/31 (2006.01) A61M 25/06 (2006.01)

Patent

CA 2015834

A flashback vent plug is provided for catheters with air vents drilled by a laser beam which allow venting of the hollow plug upon venous entry, but which vents are so small that blood cannot pass. As a result, no leakage ever takes place. As a further feature of the invention, is the addition of a component to the resin making up the vent plug body which optimizes absorption of the laser beam wave length. The air vent design of this invention provides sufficient cross-section for achieving the required air flow, and therefore rapid flashback and venous entry indication, yet its cost of manufacture is considerably reduced when compared to plug designs that involve multi-step assembly.

Bouchon à évents pour cathéters, avec évents percés au rayon laser permettant d'évacuer l'air du bouchon creux au moment d'une entrée veineuse, mais dont les évents sont si petits que le sang ne peut y passer. Par conséquent, il ne survient jamais de fuite. Un autre aspect de l'invention est l'addition d'un composant à la résine constituant le corps du bouchon à évent qui optimise l'absorption de la longueur d'onde du rayon laser. La présente invention prévoit un évent de section suffisante pour assurer le débit d'air requis et, par conséquent, une indication rapide du reflux sanguin et de l'entrée veineuse, ce qui n'empêche pas un coût de fabrication considérablement réduit quand on le compare aux bouchons dont la conception comporte un assemblage en plusieurs étapes.

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