Patent ID: 11950902
Assignee: BIONIME CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 8:
9. A method for reducing a measurement interference of a target analyte, comprising:
providing a micro biosensor used to measure a physiological parameter of a target analyte in a biofluid, wherein the micro biosensor comprises:
a substrate having a surface;
a first working electrode including a first sensing section configured on the surface, wherein the first sensing section includes a first conductive material;
at least one second working electrode configured on the surface and including a second sensing section, wherein the second sensing section includes a second conductive material different from the first conductive material; and
a chemical reagent covered on at least a portion of the first conductive material for reacting with the target analyte in the biofluid to produce a resultant;

performing an interference eliminating action, wherein the first conductive material having a first sensitivity to the resultant, wherein the interference eliminating action is to drive the second working electrode by a second working voltage to cause the second conductive material, having a second sensitivity to the resultant smaller than the first sensitivity, to directly consume an interferant in the biofluid for reducing a generation of an interfering current signal at the first working electrode; and
performing a measurement action, wherein the measurement action is to drive the first working electrode by a first working voltage to cause the first conductive material to react with the resultant to output a physiological signal corresponding to the physiological parameter of the target analyte,
wherein a time period for performing the interference eliminating action is at least partially overlapped with a time period for performing the measurement action.