| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an injector assembly which reduces or eliminates a counter flow of blood to a catheter during or after a flush processing is performed, is simple, has a simple structure, and is easily manufactured. <P>SOLUTION: A vein flush syringe assembly includes a barrel having an inner surface defining a chamber for storing a fluid, an open proximal end and a distal end with a passage penetrating therethrough in fluid communication with the chamber. An elongate plunger having a proximal end, a distal end and a flexible stopper is slidably arranged in fluid-tight engagement with the inner surface of the barrel for drawing the fluid into and out of the chamber by movement of the stopper relative to the barrel. The barrel includes an anti-counter-flow structure for holding the stopper in a partially deflected position after the fluid is delivered from the chamber and the stopper is pressed against the distal end of the chamber. <P>COPYRIGHT: (C)2010,JPO&INPIT |
