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:
Nov. 08, 2016
Filed:
Aug. 08, 2013
University of Maryland, Baltimore, Baltimore, MD (US);
University of Maryland, College Park, College Park, MD (US);
St. Jude Medical, Westford, MA (US);
The United States of America As Represented BY the Department of Veterans Affairs, Washington, DC (US);
Cha-Min Tang, Radnor, PA (US);
Chia-Pin Liang, College Park, MD (US);
Yu Chen, Greenbelt, MD (US);
Ashraf Fouad, Baltimore, MD (US);
Joseph Schmitt, Andover, MA (US);
Nicholas Woolsey, Hudson, MA (US);
University of Maryland, Baltimore, Baltimore, MD (US);
The United States of America as represented by the Department of Veterans Affairs, Washington, DC (US);
St. Jude Medical, Westford, MA (US);
University of Maryland, College Park, College Park, MD (US);
Abstract
A motion sensor applicable to medical procedures includes a source of light with a wavelength bandwidth and an optical detector. A first optical coupler terminates in a first probe tip and couples the light into the first probe tip. A second optical coupler terminates in a second probe tip and directs onto the detector scattered light returning through the second probe tip. A presentation device outputs a signal that indicates motion in a target volume of a sample in a vicinity of the probe tips based on a Doppler shift of the scattered light. The volume depends on coherence distance determined by the bandwidth. In variations, the first and second tips are the same tip, a multimode fiber is included, the bandwidth is between 0.1% and 5% of a center wavelength, or the presentation device is a speaker, or some combination.