US 12,245,885 B2
System for determining peripheral artery disease and method of use
David King, London (GB); Michael Graeme Taylor, London (GB); Patrick Kelly, Sioux Falls, SD (US); and Mohammed Al-Qaisi, Nottingham (GB)
Assigned to BLUEDOP MEDICAL, LTD., Nottingham (GB)
Filed by BLUEDOP MEDICAL, LTD., Nottingham (GB)
Filed on May 25, 2023, as Appl. No. 18/202,199.
Application 18/202,199 is a continuation of application No. 15/353,862, filed on Nov. 17, 2016, granted, now 11,660,063.
Claims priority of provisional application 62/257,191, filed on Nov. 18, 2015.
Prior Publication US 2023/0293140 A1, Sep. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 8/00 (2006.01); A61B 8/04 (2006.01); A61B 8/06 (2006.01); A61B 8/08 (2006.01)
CPC A61B 8/06 (2013.01) [A61B 8/04 (2013.01); A61B 8/0891 (2013.01); A61B 8/461 (2013.01); A61B 8/488 (2013.01); A61B 8/5223 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A system for determining peripheral artery disease comprising:
a Doppler transceiver for capturing an audio representation of blood flow through a blood vessel of interest;
a waveform converter and processor coupled with the Doppler transceiver, the waveform converter and processor analyzing the audio representation to determine a presence of peripheral artery disease,
wherein the waveform converter and processor is configured to:
produce a directional sonogram,
detect a presence or an absence of any peaks in the directional sonogram between a forward systolic peak and an end diastole for a cardiac cycle,
generate a monotonicity detection if a secondary peak or a reverse flow secondary peak is not identified and a diastolic flow at the end of the cardiac cycle is positive, and
filter the detection of any secondary peaks to those which have an amplitude between 5% and 70% of the amplitude of a systolic peak of the cardiac cycle; and
a display coupled to the waveform converter and processor for providing at least one visual indicia for a user,
wherein the visual indicia includes a graphical representation of the directional sonogram, positional indications of features of the directional sonogram, and a monotonicity indicator based on the monotonicity detection.