Patent ID: 7828792
Filing Date: 2010-11-09
Classification: A61M,F04B,G01F

Abstract:
1. An implantable infusion apparatus comprising: a. a rechargeable positive pressure infusate reservoir; b. an electronically controlled metering assembly receiving infusate from said reservoir, said metering assembly comprising a pair of normally closed valves and an accumulator positioned in fluid communication with each of said valves, wherein each of said valves comprises: c. electronic means for controlling the operation of said valves, and d. an outlet in fluid communication with said metering assembly to dispense infusate to a site in a living body, when a first of said valves is open, infusate flows from said reservoir into said accumulator and when the second valve is open and said first valve is closed, infusate flows from said accumulator into said outlet, said accumulator storing and discharging predetermined volume spikes of infusate at a frequency determined by the cycling rate of said pair of valves.