Patent ID: 7452348
Filing Date: 2008-11-18
Classification: A61J

Abstract:
1. A transfer needle assembly comprising: a cap-like outside guide member having a top surface and a skirt portion; a tubular inside guide member that is positioned in the outside guide member; and a puncture member which passes through the top surface of the outside guide member and has a proximal end and a distal end, wherein: the puncture member is a tubular member having at its proximal end a tip fitting portion for fitting a syringe tip and having at its distal end a puncture needle; the puncture needle is provided with a liquid passage; the liquid passage communicates with the tip fitting portion; the inside guide member is capable of sliding along an inner wall of the skirt portion of the outside guide member from a position where a distal end of the puncture needle is receded in an inside of the inside guide member, to a position where the distal end of the puncture needle projects outside of the inside guide member; in the position where the distal end of the puncture needle is receded in the inside of the inside guide member, the outside guide member and the inside guide member are releasably engaged with each other so as to be incapable of sliding; and the engagement between the outside guide member and the inside guide member is released by insertion of a mouth portion of a vial into the inside guide member.