Iv catheter introducer with retractable needle

Details Iv catheter introducer with retractable needle Iv catheter introducer with retractable needle

A - Human Necessities

61

M

A61M 5/32 (2006.01)

Patent

CA 2495571

An IV catheter introducer having a retractable needle holder and a tubular plunger that are held by a detent structure in a preferred positional relationship prior to and during insertion of the catheter. Following insertion, the plunger is pushed past the detent structure, permitting a compressed spring to force the needle holder upwardly into the plunger. A vented end cap in the plunger permits rapid venting of air displaced during retraction of the needle holder. The needle holder includes a flash chamber that is easily viewable through a clear plastic housing. Wings are provided on the housing to facilitate one-handed operation of the device. A method for assembling the subject catheter introducer is also disclosed.

La présente invention concerne un introducteur de cathéter intraveineux comprenant un porte-aiguille rétractable et un piston tubulaire, qui sont maintenus par une structure de détente dans une relation positionnelle préférée avant et pendant l'insertion du cathéter. Après l'insertion, le piston est poussé par-delà la structure de détente, permettant à un ressort comprimé de pousser le porte-aiguille vers le haut, jusque dans le piston. Un bouchon de protection aéré dans le piston permet une évacuation rapide de l'air déplacé lors de la rétraction du porte-aiguille. Le porte-aiguille comprend un chambre de visualisation transparente que l'on peut facilement visualiser à travers un logement en plastique transparent. Des ailes sur le logement permettent de faciliter la manipulation à une main du dispositif. L'invention concerne également un procédé d'assemblage de l'introducteur de cathéter précité.

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