Electrokinetic pump designs and drug delivery systems
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
Sep 27, 2007
app pub date -
Nov 22, 2006
filing date -
Nov 23, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
One embodiment of the present invention provides a piston assembly having a piston housing filled with an electrolyte; a housing within the piston housing that divides the piston housing into a first portion and a second portion, the housing having apertures, a shaft connecting the housing to a piston head outside of the piston housing; and a porous material inside of the housing in contact with the electrolyte. Additionally, there are provided a method for filling the delivery chamber with a delivery fluid by withdrawing the piston head from within the delivery chamber. Yet another embodiment provides a method for filling a fluid delivery assembly by withdrawing a shaft from within the fluid delivery assembly to simultaneously displace a moving pump element within the delivery chamber and bypass fluid around a housing in the pump chamber.
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