摘要: An angiographic injector (10), preferably in the form of a dual port syringe, has an upper (78) for connection to fluid reservoir (22) and lower (80) delivery medical under pressure patient. A first valve (28) is connected between (78), second (26) During fill operation, piston (20) moved within syringe (18) draw from into through (78). The permits air be expelled during purge but blocks flow back (22). injection moves opposite direction force out (80).
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