Implanted medication infusion device
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United States of America Patent
Stats
-
Dec 29, 1987
Grant Date -
N/A
app pub date -
Jul 21, 1986
filing date -
Jul 21, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An implantable positive pressure medication infusion device is provided which is programmable over a wide dynamic range and yet the maximum flow of medication into the body, in the event the inlet valve of the device leaks or fails in the valve open position, is limited to a safe value which is much lower than the maximum programmable infusion rate of the device. An auxiliary flow restrictor is also provided which bypasses the programmable pumping unit and assures a minimum flow of medication into the body in the event of failure of the programmable pumping unit or its electronic drive. An arrangement is also provided for detecting catheter clogging or failure of the programmable pumping unit in either a positive or negative pressure device.
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