US 11,944,273 B2
Fluorescence videostroboscopy of vocal cords
Joshua D. Talbert, Salt Lake City, UT (US); and Donald M. Wichern, Ogden, UT (US)
Assigned to Cilag GmbH International, Zug (CH)
Filed by Cilag GmbH International, Zug (CH)
Filed on Mar. 6, 2020, as Appl. No. 16/812,009.
Claims priority of provisional application 62/864,251, filed on Jun. 20, 2019.
Prior Publication US 2020/0397254 A1, Dec. 24, 2020
Int. Cl. A61B 1/04 (2006.01); A61B 1/00 (2006.01); A61B 1/045 (2006.01); A61B 1/05 (2006.01); A61B 1/06 (2006.01); A61B 1/267 (2006.01); A61B 5/00 (2006.01); G01N 21/64 (2006.01); G01S 7/483 (2006.01); G01S 17/89 (2020.01); G06T 7/00 (2017.01); H04N 23/72 (2023.01); A61B 17/00 (2006.01); H04N 23/50 (2023.01)
CPC A61B 1/043 (2013.01) [A61B 1/00004 (2013.01); A61B 1/00006 (2013.01); A61B 1/00039 (2013.01); A61B 1/00042 (2022.02); A61B 1/0005 (2013.01); A61B 1/00087 (2013.01); A61B 1/045 (2013.01); A61B 1/05 (2013.01); A61B 1/063 (2013.01); A61B 1/0638 (2013.01); A61B 1/0661 (2013.01); A61B 1/267 (2013.01); A61B 1/2673 (2013.01); A61B 5/0033 (2013.01); A61B 5/0071 (2013.01); G01N 21/6456 (2013.01); G01S 7/483 (2013.01); G01S 17/89 (2013.01); G06T 7/0012 (2013.01); H04N 23/72 (2023.01); A61B 1/000095 (2022.02); A61B 2017/00154 (2013.01); A61B 2017/00172 (2013.01); A61B 2017/00194 (2013.01); G06T 2207/10064 (2013.01); G06T 2207/10068 (2013.01); G06T 2207/30024 (2013.01); H04N 23/555 (2023.01)] 25 Claims
OG exemplary drawing
 
1. A system for endoscopic visualization of a scene, the system comprising:
an emitter that emits a plurality of pulses of electromagnetic radiation according to a pulse cycle, wherein the plurality of pulses comprises:
a plurality of strobing pulses; and
a fluorescence excitation pulse comprising electromagnetic radiation within a waveband from about 775 nm to about 815 nm;
an image sensor comprising a pixel array that accumulates electromagnetic radiation and reads out a plurality of exposure frames according to a sensor cycle that comprises a plurality of readout periods and a plurality of blanking periods; and
a controller in electronic communication with the emitter and the image sensor that synchronizes timing of the pulse cycle and the sensor cycle, wherein the controller comprises one or more processors configured to execute instructions comprising:
determining a vibration frequency of a vocal cord of a user;
calculating a strobing frequency based on the vibration frequency;
instructing the emitter to emit the plurality of strobing pulses at the strobing frequency;
identifying, based on synchronization of the pulse cycle and the sensor cycle, at least one strobing pulse that will be emitted during an identified readout period of the image sensor; and
causing the image sensor to suspend pixel readout when the at least one strobing pulse is emitted during the identified readout period.