Drug dispensing system
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United States of America Patent
Stats
-
May 30, 1989
Grant Date -
N/A
app pub date -
May 11, 1987
filing date -
May 11, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The drug dispensing set includes a reservoir having a cylinder for receiving a primary infusion solution at the proximal end and a piston which slides within the cylinder in seal-tight relation. The piston includes a one-way valve to permit passage of the primary infusion solution to the distal side of the piston under pump pressure. A Y-site or three-way valve is connected in the tubing downstream of the reservoir to permit infusion of a drug dosage into the distal end of the cylinder while the piston moves towards the proximal end of the cylinder under the pressure of the delivered drug dosage. The drug dosage is subsequently dispensed from the reservoir when the pump is re-started and the primary infusion solution following the drug dosage serves to flush the tubing of the drug dosage.
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