US 12,268,482 B2
Methods for assessing a vessel with sequential physiological measurements
Wenguang Li, Los Gatos, CA (US)
Assigned to Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed by BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed on Apr. 25, 2023, as Appl. No. 18/138,878.
Application 18/138,878 is a continuation of application No. 16/384,394, filed on Apr. 15, 2019, granted, now 11,666,232.
Claims priority of provisional application 62/659,514, filed on Apr. 18, 2018.
Prior Publication US 2023/0255504 A1, Aug. 17, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/0215 (2006.01); A61B 5/00 (2006.01); A61B 5/055 (2006.01); A61B 6/12 (2006.01); A61B 6/46 (2024.01)
CPC A61B 5/0215 (2013.01) [A61B 5/055 (2013.01); A61B 5/6851 (2013.01); A61B 6/12 (2013.01); A61B 6/463 (2013.01); A61B 6/467 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for evaluating a vessel of a patient, the system comprising:
a display;
a memory comprising instructions; and
a processor coupled to the memory and to the display, the processor configured to execute the instructions, which when executed cause the processor to:
receive data comprising an indication of a pressure ratio curve for a vessel of a patient,
identify a first window along the pressure ratio curve where a change in pressure within the first window is at or above a first threshold change value,
identify a general position of a starting point of a stepped change in the pressure ratio curve based on the first window,
identify a second window along the pressure ratio curve where a change in pressure within the second window is at or above a second threshold change value,
identify an optimized position of the starting point of the stepped change in the pressure ratio curve based on the second window, and
cause the display to display the pressure ratio curve and a label of the optimized position of the starting point of the stepped change on the pressure ratio curve,
wherein the second window is smaller than the first window, and the second threshold change value is smaller than the first threshold change value, and
wherein the starting point of the stepped change corresponds to a change in a hemodynamic characteristic of the vessel.