A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 5/32 (2006.01)
Patent
CA 2051806
2051806 9112843 PCTABS00007 This invention is a lockable and retractable safety cap for covering the needle of a hypodermic syringe to prevent accidental needle-stick. There is a unitary cap assembly (30) of a resiliently flexible plastic material including a hub portion (32) disposed concentrically about a base portion of the needle and attached to the barrel, a sliding safety hub portion (36) having a bore (38) therethrough slidably disposed with the needle passing through the bore and extending over a point end of the needle, and a plurality of slats (40) extending between the hub portion and the sliding safety hub portion. The slats are parallel to the needle whereby a longitudinal compressive force against the sliding safety hub portion is resisted by a longitudinal compressive resistance of the slats which must be overcome before the slats will deform and flex outward from the needle to expose the needle for use. A releasable safety latch assembly (52) can be disposed over the slats for preventing deforming and outward flexing thereof. The preferred assembly comprises a coil spring (60) disposed over the slats, a sliding collar (58) carried by an outer end of the coil spring, a retaining button (56) located on one of the slats adjacent the inner end for holding the sliding collar to retain the coil spring in a compressed state, and a release for releasing a hold on the sliding collar when the slats bend outward whereby following use of the syringe the coil spring is released and returns to an extended state.
Kuracina Thomas C.
Ohnemus Randall E.
Kuracina Thomas C.
Smart & Biggar
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