Patent ID: 11918356
Assignee: ABBOTT DIABETES CARE INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A system for detecting partial withdrawal of a transcutaneous sensor from a patient, the system comprising:
the transcutaneous sensor, the transcutaneous sensor comprising:
a substrate;
a first working electrode on the substrate, the first working electrode comprising a first active sensing area configured to transduce an analyte in the patient into a first current output; and
a second working electrode on the substrate, the second working electrode comprising a second active sensing area configured to transduce the analyte in the patient into a second current output,
wherein the first active sensing area is longitudinally offset along the substrate from the second active sensing area; and
a data processing unit coupled to the transcutaneous sensor, wherein the data processing unit is configured to:
determine a current ratio of the first current output to the second current output;
compare the current ratio to a size ratio defined by a first size of the first active sensing area to a second size of the second active sensing area; and
determine that the transcutaneous sensor has been at least partially withdrawn from the patient in response to the current ratio being different than the size ratio.