Implanted medication infusion device

Details Implanted medication infusion device Implanted medication infusion device

1986-07-21

1987-12-29

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

128DIG12, A61M 700

Patent

active

047158522

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.

REFERENCES:
patent: 4265241 (1981-05-01), Portner et al.
patent: 4360019 (1982-11-01), Portner et al.
patent: 4460355 (1984-07-01), Layman
patent: 4490137 (1984-12-01), Moukheibir
patent: 4604090 (1986-08-01), Reinicke

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