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. 26, 2017
Filed:
Nov. 05, 2014
Sean D. Lubner, Berkeley, CA (US);
Jeunghwan Choi, Roseville, MN (US);
Harishankar Natesan, Minneapolis, MN (US);
Christopher E. Dames, Granada Hills, CA (US);
John C. Bischof, St. Paul, MN (US);
Sean D. Lubner, Berkeley, CA (US);
Jeunghwan Choi, Roseville, MN (US);
Harishankar Natesan, Minneapolis, MN (US);
Christopher E. Dames, Granada Hills, CA (US);
John C. Bischof, St. Paul, MN (US);
Regents of the University of Minnesota, Minneapolis, MN (US);
Abstract
A sensing system uses three-omega sensing to determine a spatial profile of thermal property within a sample. The sensing system electrically powers a lossy electrical conductor at different driving frequencies. The different driving frequencies produce different penetration depths within the sample. The sensing system takes multiple measurements of thermal property at the different driving frequencies. Each measurement is associated with a different penetration depth, and therefore is averaged over a differently-sized volume within the sample. The sensing system performs a fit on the multiple measurements of material thermal property versus material geometry. If one of thermal property or geometry is known beforehand, then the fit can determine the other. The lossy electrical conductor can be formed on a polymeric flexible membrane, on a probe that can be placed at a suitable location in a patient's body, and/or directly onto a heating or cooling element.