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:
Dec. 05, 2006
Filed:
Aug. 23, 2002
Maria Teodorczyk, San Jose, CA (US);
Ernest J. Kiser, Los Altos, CA (US);
Lorin P. Olson, Scotts Valley, CA (US);
Devin Mcallister, Marlborough, MA (US);
Vadim V. Yuzhakov, San Jose, CA (US);
Koon-wah Leong, Sunnyvale, CA (US);
Maria Teodorczyk, San Jose, CA (US);
Ernest J. Kiser, Los Altos, CA (US);
Lorin P. Olson, Scotts Valley, CA (US);
Devin McAllister, Marlborough, MA (US);
Vadim V. Yuzhakov, San Jose, CA (US);
Koon-wah Leong, Sunnyvale, CA (US);
Lifescan, Inc., Milpitas, CA (US);
Abstract
Methods and devices for electrochemically detecting a change in the viscosity of a fluid are provided. In the subject methods, a fluid sample (e.g., a whole blood sample) is introduced into an electrochemical test strip's electrochemical cell using a micro-needle integrated into one of oppositely spaced apart working and reference electrodes. An electric potential is applied to the electrochemical cell to first achieve a steady state cell current. A decrease in the steady state cell current is then detected and related to a change in viscosity of the sample. In many embodiments, the sample is blood and the change in viscosity is related to the onset of coagulation in the blood sample, and often the PT of the blood sample. An electrochemical test strip includes an electrochemical cell and an integrated micro-needle. The electrochemical cell includes oppositely spaced apart working and reference electrodes and a reagent mixture (e.g., a redox couple and a coagulation catalyzing agent). The micro-needle is integrated into one of the working and reference electrodes of the electrochemical cell.