Patent ID: 6267749
Filing Date: 2001-07-31
Classification: A61M

Abstract:
A single-use syringe, comprising:a barrel having proximal and distal ends, a longitudinal channel therethrough, and a port at its distal end;a plunger adapted to move along said longitudinal channel, at least a portion of the plunger being adapted to conform to an inner surface of the barrel, the plunger comprising a frangible section adapted to break upon application of a selected longitudinal tension; andan engageable lock for holding a portion of the plunger distal to said frangible section, wherein said lock is capable of holding the portion of the plunger in opposition to a force in excess of said selected longitudinal tension,whereby upon engagement of the lock, a proximal force in excess of said selected longitudinal tension applied to the proximal end of the plunger will cause the frangible section to break.