Needle assembly including obturator with safety reset

Details Needle assembly including obturator with safety reset Needle assembly including obturator with safety reset

A - Human Necessities

61

M

A61M 5/32 (2006.01)

Patent

CA 2595683

A needle assembly is able to collect a sample of biological material in a needle of the assembly. The needle assembly has a safety shield capable of being moved on the needle assembly to cover a sharp tip of the needle assembly. The shield can be locked in place over the sharp tip by a locking mechanism . The assembly further includes an obturator that can be inserted into the needle to remove the sample from the needle. A reset member , which in some embodiments is associated with the obturator, is capable of operatively engaging the locking mechanism to release the locking mechanism and allow the shield to be moved away from the sharp tip.

L'invention concerne un ensemble aiguille (10, 110, 210, 210', 310, 410, 610) qui peut prélever un échantillon de matière biologique dans une aiguille (14, 114, 214, 214', 314, 414, 614, 766, 820, 840, 850) de l'ensemble. L'ensemble aiguille comprend un écran de sûreté (16, 116, 216, 216', 316, 416, 516, 616, 769, 801, 821, 832, 832', 916) pouvant être déplacé sur l'ensemble aiguille afin de couvrir une pointe acérée (28, 428, 628) de l'ensemble aiguille. L'écran peut être bloqué au-dessus de la pointe acérée au moyen d'un mécanisme de verrouillage (52, 152, 252, 252', 352, 452, 552, 652, 760, 814, 952). L'ensemble comprend également un obturateur (26, 126, 226, 226', 326, 426, 526, 626, 761, 791, 803, 813, 823, 831, 831') qui peut être inséré dans l'aiguille afin de retirer l'échantillon de l'aiguille. Un élément de réarmement (72, 172, 272, 272', 372, 482, 582, 672, 762, 817, 847, 861, 972), qui, dans certains modes de réalisation est associé à l'obturateur, est capable d'entrer en contact de manière fonctionnelle avec le mécanisme de verrouillage afin de libérer le mécanisme de verrouillage et de permettre à ce dernier de s'éloigner de la pointe acérée.

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