Patent ID: 6529755
Filing Date: 2003-03-04
Classification: A61B,A61N,C12Q

Abstract:
An assembly for use in a monitoring device for monitoring a chemical signal present in a subject, said assembly comprising:an ionically conductive material comprising first and second faces, said first face comprising a chemical signal target area, the ionically conductive material comprising water and an electrolyte; a working electrode, comprising a catalytic face, said catalytic face aligned with the first face of the ionically conductive material corresponding to said chemical signal target area; an electroosmotic electrode positioned to contact the first face of the ionically conductive material; and a mask characterized by being substantially impermeable to a chemical signal, said mask positioned relative to the second face of the ionically conductive material opposite the first face such that chemical signal transported through a plane of the mask, through the ionically conductive material, and toward the chemical signal target area is substantially only that chemical signal transported in a direction substantially perpendicular to the chemical signal target area.