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:
Jul. 26, 2011
Filed:
Dec. 29, 2006
LU Wang, Pasadena, CA (US);
Rajiv Shah, Rancho Palos Verdes, CA (US);
Kenneth W. Cooper, Valencia, CA (US);
Richard K. Yoon, Northridge, CA (US);
Helen Lee, San Gabriel, CA (US);
Lu Wang, Pasadena, CA (US);
Rajiv Shah, Rancho Palos Verdes, CA (US);
Kenneth W. Cooper, Valencia, CA (US);
Richard K. Yoon, Northridge, CA (US);
Helen Lee, San Gabriel, CA (US);
Medtronic Minimed, Inc., Northridge, CA (US);
Abstract
A method and program prevents a user from bypassing a limit placed on a specified operating life of a sensor by disconnecting and reconnecting the sensor. The present invention checks a characteristic of the sensor to see if the sensor is used prior to the connection of the sensor, and rejects the sensor if the sensor is determined to have been used before. The process of checking the characteristic of the sensor involves performing an Electrochemical Impedance Spectroscopy (EIS) procedure and calculating an impedance value. The impedance value can be compared to various threshold values for a variety of purposes including the determination of age, condition, hydration, and stabilization of the sensor.