专利名称：Needle assembly with vein entry indicator发明人：Kaufman, Joseph申请号：EP82100819.0申请日：19820205公开号：EP0060385B1公开日：19840815
摘要：A needle assembly (10) preferably suitable for single sample blood collectionand for determining vein entry when collecting a blood sample from a patient includes ahousing (12) with an interior chamber (40) having a blood inlet needle (14) on one side ofthe housing (12) and a blood outlet needle (15) on the other. The outlet needle (15)extends into the chamber interior (40), is open at its distal end (45) and includes a sidehole (48) therethrough. A vent plug (26) covers the side hole (48) by surrounding theoutlet needle (15) inside the chamber (40), while a blood soluble sealant plug (27) coversthe open end (45) of the outlet needle (15). This arrangement delays liquid from flowinginto the holes (45, 48) while allowing gas to flow through the vent plug (26) into the sidehole (48) for escape from the assembly (10) whereby the prevented liquid may then beviewed by a user through a transparent portion (42) of the housing (12). The sealant plug(27) is removable from the open end (45) by dissolving it into the blood inside thechamber (40) so that liquid is allowed to flow into the outlet needle (15) for collection.
申请人：Becton, Dickinson and Company
地址：Mack Centre Drive P.O. Box 2224 Paramus New Jersey 07652-1149 US
国籍：US
代理机构：Selting, Günther, Dipl.-Ing.
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