초록 ▼

A dual port syringe has an upper port for connection to a fluid reservoir and a lower port for delivery of the medical fluid under pressure to a patient. A first valve is connected between the fluid reservoir and the upper port, and second valve is connected between the lower port and the patient. D

A dual port syringe has an upper port for connection to a fluid reservoir and a lower port for delivery of the medical fluid under pressure to a patient. A first valve is connected between the fluid reservoir and the upper port, and second valve is connected between the lower port and the patient. During a fill operation, a piston is moved within the syringe to drawn fluid from the reservoir into the syringe through the upper port. During injection operation, the piston moves in an opposite direction to force fluid out of the syringe through the lower port.

대표청구항 ▼

[ What is claimed is:] [1.] A dual port syringe comprising:a syringe body;a piston reciprocally mounted in the syringe body;an upper port at a first end of the syringe body through which medical fluid is received; the first end being frustoconical;a lower port at the first end of the syringe body fr

[ What is claimed is:] [1.] A dual port syringe comprising:a syringe body;a piston reciprocally mounted in the syringe body;an upper port at a first end of the syringe body through which medical fluid is received; the first end being frustoconical;a lower port at the first end of the syringe body from which the medical fluid is delivered under pressure;the syringe body including a tubular portion extending longitudinally from the first end, and further comprising an insert positioned within the syringe body adjacent the first end and extending into the tubular portion, the insert defining the upper port and the lower port; the insert having a generally cylindrical first portion extending longitudinally from a frustoconical second portion; andthe insert having an upper port groove extending along an upper surface of the first and second portions and a lower port groove extending along a lower surface of the first and second portions.