A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 5/32 (2006.01) A61M 5/50 (2006.01)
Patent
CA 2356135
A hypodermic syringe with a selectively retractable needle includes an elongate barrel having an open proximal end, an open distal end and a hollow bore. The syringe includes an elongate plunger including a hollow outer housing having an open proximal end and an open distal end. The plunger has a hollow inner sleeve defining a cavity therein. The plunger has releasable engagement elements preventing relative axial movement between the outer housing and the inner sleeve, the elements allowing the relative axial movement when released and a distal stopper. There is an open cutter mounted at a proximal end of the inner sleeve to cut through the stopper to expose the cavity in the inner sleeve when the engagement elements are released and sufficient distal axial force is applied to the plunger. The syringe has a hub housing with an open proximal end having an inwardly projecting shoulder, a hub with a proximal flange and an axial stem, sized to fit within the hub housing. There is a spring disposed about the stem between the flange and the shoulder. The syringe has a needle with a sharp point extending outwardly. The needle retracts into the cavity in the plunger when sufficient distal force is applied to the plunger to release the engagement elements. The release allows movement of the inner sleeve with respect to the outer housing so that the cutter cuts through the stopper and the flange and the spring urges movement of the needle into the cavity.
Caizza Richard
Cohn Simon
Gabel Jonathan
Becton Dickinson And Company
Gowling Lafleur Henderson Llp
LandOfFree
Hypodermic syringe with selectively retractable needle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hypodermic syringe with selectively retractable needle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hypodermic syringe with selectively retractable needle will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1698142