System for detecting air

Details System for detecting air System for detecting air

2008-04-15

2008-04-15

Kennedy, Sharon E. (Department: 1615)

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

C604S228000

Reexamination Certificate

active

07357785

ABSTRACT:
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.

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