Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1318/CHE/2011 A
(19) INDIA
(22) Date of filing of Application :18/04/2011 (43) Publication Date : 21/06/2013
(54) Title of the invention : LOW COST ELECTROCHEMICAL DISPOSABLE SENSOR FOR MEASURING GLYCATED
HEMOGLOBIN
(51) International classification :G01N
(31) Priority Document No :NA
(32) Priority Date :NA
(33) Name of priority country :NA
(86) International Application No
:NA
Filing Date
:NA
(87) International Publication No : NA
(61) Patent of Addition to Application Number :NA
Filing Date
:NA
(62) Divisional to Application Number
:NA
Filing Date
:NA
(71)Name of Applicant :
1)Indian Institute of Science
Address of Applicant :Indian Institute of Science C.V.
Raman Avenue Bangalore- 560012 INDIA Tamil Nadu India
(72)Name of Inventor :
1)Siva Rama Krishna Vanjari
2)Navakanta Bhat
3)Sampath Srinivasan
4)Bharadwaj Amrutur
5)Chakrapani Kalapu
(57) Abstract :
Design of a disposable screen printed electrode (SPE) for sensing percentage glycated hemoglobin using electrochemistry is
disclosed. SPE has four electrodes, one working electrode for the detection of glycated hemoglobin, one working electrode for the
detection of hemoglobin and the other two electrodes are counter and reference electrodes that are common for both detection
schemes. It also has a cellulose acetate membrane with lysis agents and surfactant embedded in it. Lysis agents lyse erythrocytes
and release hemoglobin. Surfactants modify hemoglobin structure and enhance the rate the electron transfer and thereby the output
signal during the electrochemical analysis. The SPE is low cost and user friendly. The only input from the user is a drop of blood.
No. of Pages : 20 No. of Claims : 22
The Patent Office Journal 21/06/2013 13787