Abstract: A chemical sensor includes an enzyme layer, a diffusion layer and an analyte barrier layer positioned over the diffusion layer. Apertures are formed by microfabrication in the analyte barrier layer to allow controlled analyte flux to the diffusion layer.
Type:
Grant
Filed:
December 21, 2000
Date of Patent:
April 30, 2002
Assignee:
i-STAT Corporation
Inventors:
Graham Davis, Chao Lin, Imants R. Lauks, Raymond J. Pierce