Safety needle assembly

Details Safety needle assembly Safety needle assembly

A - Human Necessities

61

M

A61M 5/50 (2006.01) A61M 5/32 (2006.01)

Patent

CA 2663089

Embodiments of the invention pertain to safety needle assemblies. In one embodiment, a safety needle assembly includes a cannula, a hub on an end of the cannula, a housing that is slidable with respect to the cannula and a tether that prevents the housing from extending past the distal end of the cannula. In one embodiment, a spring washer prevents the housing from being moved in a proximal direction after the housing has covered the distal end of the needle.

Sous différentes variantes, l'invention concerne des ensembles aiguille de sécurité. Selon une variante, on décrit un tel ensemble qui comprend une canule, une embase à une extrémité de la canule, une enceinte coulissant par rapport à la canule et une attache empêchant l'enceinte de s'étendre au-delà de l'extrémité distale de la canule. Selon une variante, une rondelle ressort empêche l'enceinte de se déplacer dans une direction proximale lorsque l'enceinte a recouvert l'extrémité distale de l'aiguille.

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