Attachment for a medical device

摘要

A fluid transfer adapter for use with a syringe barrel having a collar with adapter engaging structure and a distally-facing frusto-conically shaped surface is disclosed. The adapter includes a hub having a proximally-facing frusto-conically shaped surface for mating with the frusto-conically shaped surface on the barrel, structure for threadably engaging the hub to the collar of the barrel so that the frusto-conically shaped surface of the hub contacts the frusto-conically shaped surface of the barrel to prevent liquid flow between the surfaces and a fluid transfer having a passageway therethrough, connected to the distal end of the hub so that the lumen is in fluid communication with a conduit in the hub. The passageway includes a frusto-conically shaped edge that aligns with the frusto-conically shaped edge of the barrel, when the adapter is connected to the barrel, thereby reducing waste space.