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:
Sep. 13, 2022
Filed:
Dec. 19, 2018
Leica Instruments (Singapore) Pte. Ltd., Singapore, SG;
George Themelis, Lindau, DE;
Leica Instruments (Singapore) Pte. Ltd., Singapore, SG;
Abstract
The invention relates to an apparatus () and method for automatically determining the blood flow direction () in a blood vessel () using the fluorescence light from a fluorophore (). Blood flow direction () is determined by first identifying a blood vessel structure () in an input frame () from a camera assembly () using a pattern recognition module (). Blood flow direction () is determined from the spatial gradient (dI/dx) of the fluorescence intensity (I) along the identified blood vessel structure () and the temporal gradient (dI/dt). An output frame () is displayed on a display () with time-varying marker data () overlaid on the identified blood vessels structure () and representative of the blood flow direction ().