Single use syringe
AssigneeUnitract Pty. Ltd.
InventorsCraig S Thorley, Joseph H Kaal
Life of this patent
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Abstract
A single use retractable syringe and plunger are provided. The syringe has a barrel having a collar with one or two projections that slidably engage a plurality of interconnected slots of the plunger. The slots of the syringe include one or more gates or abutments that restrict slidable movement of the projections within the slots to thereby prevent re-use of the syringe after injection and subsequent retraction of the needle.
Claims26
A plunger for a single use syringe having a co-operating barrel that has at least one projection and a retractable needle engaged therewith, said plunger engageable with said retractable needle to facilitate retraction of said needle and comprising a plurality of interconnected slots slidably engageable by said at least one projection, arranged so that slidable movement of said at least one projection within said slots is restricted to thereby prevent re-use of the syringe.
A plunger for a single use syringe having a co-operating barrel and a projection, said plunger comprising a plurality of interconnected slots slidably engageable by said projection, wherein slidable movement of said projection within said slots is restricted to thereby prevent re-use of the syringe.
A plunger for a single use syringe having a co-operating barrel with first and second projections and a retractable needle engaged therewith, said plunger engageable with said retractable needle to facilitate retraction of said needle and comprising a plurality of interconnected slots slidably engageable by said first and second projections, arranged so that slidable movement of said respective projections within said slots is restricted to thereby prevent re-use of the syringe.
A plunger as described herein with reference to the accompanying drawings.
A retractable single use syringe as herein described with reference to the accompanying drawings.
A collar for a single use retractable syringe having a co-operating plunger that has at least two slots, said collar comprising first and second guiding projections engageable with respective slots of said at least two slots of said co-operating plunger.
A collar for a retractable single use syringe as herein described with reference to the accompanying drawings.
Dependencies are inferred from the claim text.