Patent ID: 8135548
Filing Date: 2012-03-13
Classification: A61B,G16H,H04B

Abstract:
1. A computer implemented method for detecting early signal attenuation in a glucose sensor, comprising: receiving a first plurality of glucose sensor related signals within a first predetermined time period after insertion of the glucose sensor into a user, wherein the first predetermined time period occurs within the first 24 hours of insertion; determining a sensitivity of the glucose sensor based on the first plurality of glucose sensor related signals and a blood glucose measurement; determining a probability of early signal attenuation associated with the first plurality of glucose sensor related signals; determining a sensitivity ratio based on the determined sensitivity of the glucose sensor divided by a nominal sensitivity, the nominal sensitivity determined at the time the glucose sensor is manufactured; receiving a second plurality of glucose sensor related signals during a second predetermined time period when the determined probability does not exceed a first predetermined threshold level, wherein the second predetermined time period is offset from the first predetermined time period by a predetermined offset time; verifying the presence of early signal attenuation when the determined probability exceeds the first predetermined threshold level and the determined sensitivity ratio is less than a second predetermined threshold level; and generating a first output signal with a processor associated with the verification of the presence of early signal attenuation.