04443218 is referenced by 374 patents and cites 11 patents.

A programmable implantable infusion pump includes a housing containing a variable volume infusate chamber and variable volume control fluid pressure and displacement reservoirs. A conduit conducts infusate from the chamber exteriorly of the housing. A restricted fluid path exists between the two reservoirs which are filled with an incompressible control fluid. A loaded spring applies a constant force to the pressure reservoir causing fluid flow between the two reservoirs. The differential pressure across the flow restriction is sampled by a microprocessor which computes the fluid flow rate, that rate being proportional to the infusate flow rate from the chamber. When the fluid flow rate deviates from a programmed value, the processor issues an error command to a battery-driven motor which reloads the spring to reestablish the constant force on the pressure reservoir. The infusate flow rate may be changed automatically during the day in accordance with a programmed schedule and that schedule may be changed by reprogramming the processor using a telemetry receiver contained in the housing.

Title
Programmable implantable infusate pump
Application Number
6/416282
Publication Number
4443218
Application Date
September 9, 1982
Publication Date
April 17, 1984
Inventor
Samir F Idriss
Arlington
MA, US
Leonard J DeCant Jr
Allston
MA, US
Agent
Cesari and McKenna
Assignee
Infusaid Corporation
MA, US
IPC
A61M 5/14
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