Syringe attachment device

Claim 1

An attachment unit for medicinal syringes equipped with a transfer spike comprising first and second elongated tubular portions connected together at their inner ends and extending from such connection in axially aligned, opposed directions so that said first tubular portion provides at one end of the unit an entry passage for a syringe spike and said second tubular portion provides at the other end of the unit an entry passage for a tubular entry port of the plastic bag for medicinal material, the bore of said first tubular portion being formed at its outer end portion to provide a first seat snugly receiving one part of a syringe spike and adjacently to said outer end portion being formed to provide a second seat for another part of the spike, an internal shoulder formed in such bore between said first and second seats to properly register said spike parts on said seats, the bore of said first tubular portion having a length greater than the length of the spike insertable thereinto, tubular means providing a reduced passageway axially aligned with the bores of said first and second tubular portions and communicating at one end with the inner end of the bore in said first tubular portion, a needle cannula having one end located in said reduced passageway with its bore in communication with said first tubular portion bore, means for mounting said one end of the needle cannula in liquid-tight relation in said reduced passageway and with the remainder of said needle extending outwardly therefrom axially through the bore of said second tubular portion, the bore of said second tubular portion being formed to receive the tubular entry port of a plastic medicinal bag with such remainder of the needle extending through the bore of such port, and the outer end of said tubular means providing a stop seat for the terminal outer end of such entry port.