Safety needle assembly

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/32 (2006.01)

Patent

CA 2719110

A safety needle assembly is provided herein which includes a hub; a needle fixed to the hub, the needle having a dista! end, formed for insertion into a patient, and a proximal end; a first shield having a tubular body at least partially encircling a portion of the needle, wherein in an initial state, the first shield extends from the hub; a second shield having a tubular body at least partially encircling a portion of the needle; a biasing element disposed to urge the second shield distally towards the distal end of the needle; and, a releasable retaining arrangement for releasably retaining the second shield in a first state. Upon a predetermined extent of proximal movement of the first shield relative to the hub, the second shield is released thereby allowing the biasing element to urge the second shield to a second state in which the dista.i end of the needle is covered. Advantageously, with the arrangement of the subject invention, two shields are provided for at least partially covering a needle with one of the shields acting as a trigger.

Linvention concerne un ensemble aiguille de sécurité qui comprend un moyeu ; une aiguille est fixée au moyeu, laiguille ayant une extrémité distale, formée pour insertion dans un patient, et une extrémité proximale ; un premier blindage comportant un corps tubulaire encerclant au moins partiellement une partie de laiguille, où dans un état initial, le premier blindage prolonge le moyeu ; un second blindage ayant un corps tubulaire encerclant au moins partiellement une partie de laiguille ; un élément de sollicitation disposé pour pousser le second blindage de façon distale vers lextrémité distale de laiguille ; et un agencement de retenue libérable pour retenir de façon libérable le second blindage dans un premier état. Lors dune étendue prédéterminée dun mouvement proximal du premier blindage par rapport au moyeu, le second blindage est libéré, permettant ainsi à lélément de sollicitation de pousser le second blindage vers un second état dans lequel lextrémité distale de laiguille est recouverte. Avantageusement, avec lagencement de la présente invention, deux blindages sont prévus pour couvrir au moins partiellement une aiguille avec lun des blindages qui agit comme déclencheur.

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