US 12,121,392 B2
Waveform visualization tool for facilitating medical diagnosis
Robert Hamilton, Los Angeles, CA (US); Corey Thibeault, Los Angeles, CA (US); Michael O'Brien, Los Angeles, CA (US); Mina Ranjbaran, Los Angeles, CA (US); Samuel Thorpe, Los Angeles, CA (US); and Nicolas Canac, Los Angeles, CA (US)
Assigned to Neurasignal, Inc., Los Angeles, CA (US)
Filed by Neurasignal, Inc., Los Angeles, CA (US)
Filed on Nov. 30, 2020, as Appl. No. 17/107,843.
Application 17/107,843 is a continuation of application No. 16/003,012, filed on Jun. 7, 2018, granted, now 10,849,593, issued on Dec. 1, 2020.
Application 16/003,012 is a continuation of application No. 15/971,260, filed on May 4, 2018, granted, now 11,963,817.
Claims priority of provisional application 62/619,015, filed on Jan. 18, 2018.
Prior Publication US 2021/0100525 A1, Apr. 8, 2021
Int. Cl. A61B 8/06 (2006.01); A61B 8/00 (2006.01); A61B 8/08 (2006.01); G01S 15/89 (2006.01)
CPC A61B 8/06 (2013.01) [A61B 8/0808 (2013.01); A61B 8/0891 (2013.01); A61B 8/4218 (2013.01); A61B 8/4227 (2013.01); A61B 8/4236 (2013.01); A61B 8/4245 (2013.01); A61B 8/4281 (2013.01); A61B 8/4477 (2013.01); A61B 8/461 (2013.01); A61B 8/463 (2013.01); A61B 8/488 (2013.01); A61B 8/5207 (2013.01); A61B 8/5292 (2013.01); A61B 8/0816 (2013.01); A61B 8/466 (2013.01); A61B 8/5223 (2013.01); G01S 15/8979 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a processing circuit configured to:
receive, from a headset device, signals corresponding to ultrasound data, the signals acquired by a transducer of a probe of the headset device;
extract a blood flow waveform from the signals, the blood flow waveform corresponds to a single pulse of the signals;
enhance at least one sharp upslope defining a start of the blood flow waveform;
identify one or more window locations within the enhanced blood flow waveform, the one or more window locations associated with pulse onset and determined by:
applying a threshold to the enhanced blood flow waveform;
determining at least one threshold crossing point of the enhanced blood flow waveform; and
enforcing a refractory period after determining the threshold crossing point, wherein the refractory period disallows determination of further threshold crossing points within the refractory period;
determine, within the one or more window locations, a curvature characteristic of the enhanced blood flow waveform based on a plurality of local curvature parameters, each of the plurality of local curvature parameters indicating a degree to which the enhanced blood flow waveform deviates from a straight line at a location on the enhanced blood flow waveform;
identify, based on the curvature characteristic of the enhanced blood flow waveform, a medical condition for the blood flow waveform; and
control an output device to display the enhanced blood flow waveform comprising a graphical indication indicating at least one of the one or more window locations associated with the identification of the medical condition.