Electrokinetic delivery systems, devices and methods
The technology of an electric pump and a second electric pump is applied in the directions of liquid distribution, transportation or transfer device, electrotherapy, distribution device, etc., to achieve the effect of high-precision movement, reliable structure, and reliable movement
Inactive Publication Date: 2011-08-03
EKSIGENT TECH
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[0005]Although electroosmosis is widely used in chemical analysis (such as high-speed liquid chromatography and other chemical separation processes) and has a wide range of applications, its application in medical aspects (such as in drug delivery and analytical sampling) have advantages over conventional mechanical methods, but are still limited
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[0078] Each fluid container also includes a fluid port 118 (which may be an inlet or an outlet) and capacitive electrodes 120a and 120b. Electrical leads (not shown) are provided in contact with the electrodes 120a, 120b, thereby connecting the electrodes 120a, 120b to a power source (not shown). During operation, vessels 102 and 104, including the space between porous dielectric material 108 and electrodes 120a, 120b, are filled with electrolyte or pump fluid 122. The fluid 122 may flow through the electrodes 120a, 120b, or around the electrodes 120a, 120b. When a voltage is applied (related to the desired flow and pressure profile of the pump 100), the pump fluid 122 flows from one fluid container to the other via electroosmosis, without electrolysis, There is no gas generation or substantial capacitive deionization. Those skilled in the art understand that gas generation or pH changes due to changes in pump components such as the pump fluid and / or electrodes can cause sys...
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Devices, systems and methods according to the present invention utilize electrokinetic pumps capable of generating high and low pressures flow for various medical applications, including drug delivery and analyte sampling. The EK pumps and systems are configured and constructed to be low cost, compact and precise. In one embodiment, the EK pump comprises a first fluid reservoir 102 and a second fluid reservoir 104. First fluid reservoir 102 is coupled to second fluid reservoir 104 by through- vias 106, 110 and porous dielectric material 108. Through-vias 106 and 110, along with porous dielectric material 108 proivde a fluidic path between first reservoir 102 and second reservoir 104. Each fluid rservoir further comprises a fluid port 118, which can be an inlet or outlet, and capacitive electrode 120a and 120b.
Description
[0001] cross reference [0002] This application is a continuation-in-part of: U.S. Patent Application Serial No. 10 / 273723 filed October 18, 2002; U.S. Patent Application Serial No. 10 / 322083 filed December 17, 2002 U.S. Patent Applications; U.S. Patent Application Serial No. 10 / 198223, filed July 17, 2002, and PCT Application No. PCT / US2003 / 032895, filed October 17, 2003, adopted in their entirety Incorporated herein by reference, this application claims priority under 35 USC § 120. to the above application. This application also claims priority under 35 USC §119 to US Patent Application Serial No. 60 / 564497, filed April 21, 2004, which is incorporated herein by reference in its entirety. Background technique [0003] Precise delivery of drugs, blood and / or other biological fluids is very important in numerous diagnostic and therapeutic medical applications, including drug delivery and analytical sampling / monitoring. However, precise movement of large and small volumes of...
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IPC IPC(8): F04B19/00A61M5/142A61M1/00F04F99/00A61M5/145A61M5/148A61M5/172A61N1/30B67D99/00F04B43/04
CPCF04B19/006A61M2230/201F04B43/043A61M2005/14513A61M5/14248A61M5/1483A61M5/1723A61M5/14276A61M2205/52
Inventor 德翁·S·阿尼克斯菲利普·H·保罗戴维·W·奈伊尔埃德温·K·瓦尔卡
Owner EKSIGENT TECH