Disposable syringe with a retractable needle
OwnerTarcisio Maggioniinventor
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Abstract
The present invention relates to a disposable syringe construction including a retractable or withdrawing needle, which comprises a cylindric body defining, at one end thereof, an end piece for the connection of the needle, and being open, at the other end thereof, for receiving a piston therein, provided with a sealing gasket. The main feature of the invention is that the end piece is provided in its inside with a cutout for coupling with abutment legs of a hub element to which the point of the needle is connected, an outer collar being moreover provided, which can be applied to the end of the end piece so as to prevent the hub and related needle to be outwardly ejected.
Claims6
A disposable syringe construction provided with a retractable needle held in a needle hub, comprising a cylindric body defining, at an end portion thereof, an end piece for firmly engaging said needle hub and being open at another end portion thereof, to receive a piston element provided with a plunger, wherein said end piece is provided with an inner cutout, said needle hub including resilient extending downwardly substantially opposite abutment legs provided with lugs engageable as said lugs are resiliently deflected toward one another in said inner cutout of said end piece, an outer collar being moreover provided which is engaged on said end piece to clamp said end piece therein to prevent said needle hub and needle from being outwardly ejected.
Dependencies are inferred from the claim text.