US 12,350,044 B2
Analyte monitoring systems and methods that make use of information about a condition of the environment surrounding an analyte sensor
Andrew DeHennis, Germantown, MD (US); and Xiaoxiao Chen, Washington, DC (US)
Assigned to Senseonics, Incorporated, Germantown, MD (US)
Filed by Senseonics, Incorporated, Germantown, MD (US)
Filed on Jun. 21, 2022, as Appl. No. 17/845,479.
Application 17/845,479 is a continuation of application No. 16/675,757, filed on Nov. 6, 2019, granted, now 11,375,927.
Claims priority of provisional application 62/756,815, filed on Nov. 7, 2018.
Prior Publication US 2022/0313126 A1, Oct. 6, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/1455 (2006.01); A61B 5/00 (2006.01); A61B 5/145 (2006.01)
CPC A61B 5/14552 (2013.01) [A61B 5/0031 (2013.01); A61B 5/14503 (2013.01); A61B 5/14532 (2013.01)] 34 Claims
OG exemplary drawing
 
1. An analyte monitoring system comprising:
an analyte sensor comprising: (i) a sensor housing, (ii) an analyte indicator on at least a portion of the sensor housing and configured to emit an amount of light indicative of an analyte level in a first medium in proximity to the analyte indicator, (iii) a protective material on at least a portion of the analyte indicator, (iv) a light source in the sensor housing and configured to emit excitation light to the analyte indicator, (v) a reference photodetector in the sensor housing and configured to generate a reference signal indicative of an amount of the excitation light received by the reference photodetector, and (vi) a transceiver interface configured to convey sensor measurements including one or more measurements of the reference signal; and
a transceiver comprising: (i) a sensor interface configured to receive the sensor measurements conveyed by the analyte sensor and (ii) a processor configured to infer information about a condition of the environment surrounding the analyte sensor using at least one or more of the sensor measurements;
wherein the excitation light received by the reference photodetector includes light that was emitted by the light source, passed through the analyte indicator and the protective material, and was reflected by the environment surrounding the analyte sensor;
wherein the environment surrounding the analyte sensor includes one or more of tissue, blood, and clotting.