Drug delivery pump with isolated hydraulic metering
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 7, 2003
Grant Date -
N/A
app pub date -
Jan 31, 2000
filing date -
Jan 31, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A medical device and more particularly a drug delivery pump has an hydraulic reservoir, a metering device, a displacement reservoir, a drug reservoir, and a drug infusion port all contained in a housing that can either be attached to or implanted into a patient. The hydraulic reservoir contains an hydraulic fluid that is under compression and flows through the metering device at an hydraulic rate. The hydraulic metering is isolated from the drug, and the metering device does not contain moving parts. The hydraulic fluid then flows into the displacement reservoir that applies pressure to the drug reservoir. The drug reservoir is compressible and adapted to contain a drug. As the drug reservoir is compressed, drug egresses through the drug infusion port at an infusion rate that is controlled by hydraulic rate. A method for filling the drug pump and a method for infusing drug from the drug pump are also disclosed.
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