The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2022
Filed:
Dec. 30, 2016
Dexcom, Inc., San Diego, CA (US);
Shanger Wang, Castro Valley, CA (US);
Robert J. Boock, Carlsbad, CA (US);
Andrew Trinin Dennis, La Jolla, CA (US);
Ted Tang Lee, San Diego, CA (US);
Jeff T. Suri, Fallbrook, CA (US);
David Sze, San Diego, CA (US);
Mark A Tapsak, Bloomsburg, PA (US);
Huashi Zhang, San Diego, CA (US);
Jiong Zou, San Diego, CA (US);
DEXCOM, INC., San Diego, CA (US);
Abstract
Disclosed are devices for determining an analyte concentration (e.g., glucose). The devices comprise a sensor configured to generate a signal associated with a concentration of an analyte and a sensing membrane located over the sensor. The sensing membrane comprises a biointerface layer which interfaces with a biological fluid containing the analyte to be measured. The biointerface layer can comprises a biointerface polymer, wherein the biointerface polymer comprises polyurethane and/or polyurea segments and one or more zwitterionic repeating units. The sensing membrane can also comprise an enzyme layer, wherein the enzyme layer comprises an enzyme and a polymer comprising polyurethane and/or polyurea segments and one or more zwitterionic repeating units. The sensing membrane can also comprise a diffusion-resistance layer, which can comprise a base polymer having a lowest Tg of greater than −50 C.