US 11,774,395 B2
Test element for electrochemically detecting at least one analyte
Klaus Andreas Bauer-Espindola, Mannheim (DE); Michael Marquant, Mannheim (DE); Christine Nortmeyer, Mannheim (DE); and Reiner Stein, Bad Kreuznach (DE)
Assigned to Roche Diagnostics Operations, Inc, Indianapolis, IN (US)
Filed by Roche Diagnostics Operations, Inc., Indianapolis, IN (US)
Filed on Nov. 30, 2020, as Appl. No. 17/106,620.
Application 17/106,620 is a continuation of application No. 15/604,017, filed on May 24, 2017, granted, now 11,099,149.
Application 15/604,017 is a continuation of application No. PCT/EP2015/080132, filed on Dec. 17, 2015.
Claims priority of application No. 14199341 (EP), filed on Dec. 19, 2014.
Prior Publication US 2021/0080420 A1, Mar. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 27/327 (2006.01); C12Q 1/00 (2006.01)
CPC G01N 27/3272 (2013.01) [C12Q 1/006 (2013.01); G01N 27/3274 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A system for determining at least one property of a sample, the system comprising at least one test element, wherein the test element comprises at least one first electrode and at least one second electrode, wherein the first electrode is designed as a working electrode and the second electrode is designed as a counter electrode, wherein the test element comprises at least one capillary capable of receiving a sample of the body fluid, wherein the capillary is open at three sides, wherein a sample of body fluid is applicable to a side dose position and/or a front dose position, wherein the first electrode and the second electrode are arranged on opposing sides of the capillary, wherein the first electrode and the second electrode and the capillary in between the first electrode and the second electrode form an electrochemical cell, wherein the test element is configured to detect the at least one analyte independently of a filling level of the electrochemical cell, wherein the first electrode and the second electrode are arranged such that during a capillary filling the first electrode and the second electrode are wetted simultaneously and at an equal rate, the system further comprising at least one measurement device adapted for performing at least one electrical measurement using the test element, wherein the measurement device is configured to detect both an AC signal and a DC signal simultaneously, wherein both the AC signal and the DC signal are proportional to the filling level of the capillary such that effects due to a filling level of the capillary are compensated, wherein the measurement device is further configured to form a ratio of the AC signal and the DC signal, wherein the ratio is independent from the filling level of the electrochemical cell, wherein the measurement device is configured to detect the at least one analyte independently of a filling level of the electrochemical cell, and wherein the measurement device is configured to apply an AC signal between the at least one first electrode and the at least one second electrode of the test element.