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:
Feb. 11, 2003
Filed:
Dec. 13, 2000
William P. Wiesmann, Washington, DC (US);
Adrian Richard Urias, Germantown, MD (US);
Jill Uyeno, Mission Viejo, CA (US);
Adrian Prokop, Seattle, WA (US);
Jason Milne, Eagan, MN (US);
Kristopher Jarka, Sherman Oaks, CA (US);
Farbod Ghassemi, Emerainville, FR;
The General Hospital Corporation, Boston, MA (US);
Abstract
A system for assessing organ function couples light emitters into an optical fiber delivery assembly of which the tip extends to or into an internal organ and illuminates tissue; the device senses temperature at the tip, and a collection fiber collects light scattered, reflected or emitted by the surrounding tissue. Control and processing modules drive the laser diodes and process return spectral signals, e.g., to assess metabolic activity and detect onset of shock. A prototype uses four laser diodes with peaks at 735, 760, 805 and 890 nm, with a front end splitter providing a reference beam to a photo detector for normalizing detection output and correcting the signal samples. The device may include a plurality of laser diodes and may select subsets of the sources to tailor spectral illumination to different target enzymes, metabolites or other compounds. The processor may include heuristic correlators for interpreting the physiological state or detecting the onset of shock based on magnitudes of multiple different measured parameters.