US 12,245,844 B2
Devices, systems, and methods for assessing a vessel
Jinhyoung Park, Rancho Cordova, CA (US); and Fergus Merritt, Rancho Cordova, CA (US)
Assigned to PHILIPS IMAGE GUIDED THERAPY CORPORATION, San Diego, CA (US)
Filed by PHILIPS IMAGE GUIDED THERAPY CORPORATION, San Diego, CA (US)
Filed on Jun. 13, 2023, as Appl. No. 18/209,305.
Application 18/209,305 is a continuation of application No. 17/094,155, filed on Nov. 10, 2020, granted, now 11,672,433.
Application 17/094,155 is a continuation of application No. 15/745,651, granted, now 10,849,512, issued on Dec. 1, 2020, previously published as PCT/EP2016/066917, filed on Jul. 15, 2016.
Claims priority of provisional application 62/194,066, filed on Jul. 17, 2015.
Prior Publication US 2023/0320601 A1, Oct. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/0215 (2006.01); A61B 5/00 (2006.01); A61B 5/02 (2006.01); A61B 5/352 (2021.01)
CPC A61B 5/02158 (2013.01) [A61B 5/02007 (2013.01); A61B 5/6851 (2013.01); A61B 5/6852 (2013.01); A61B 5/7239 (2013.01); A61B 5/352 (2021.01)] 18 Claims
OG exemplary drawing
 
1. A system comprising:
at least one intravascular pressure-sensing instrument comprising at least one of a catheter or a guide wire; and
a processor configured for communication with the at least one intravascular pressure-sensing instrument,
wherein the processor configured to:
obtain a plurality of pressure measurements for a cardiac cycle of a patient from the at least one intravascular pressure-sensing instrument while the at least one intravascular pressure-sensing instrument is positioned within a vessel, wherein the plurality of pressure measurements corresponds to a pressure waveform;
for the cardiac cycle, perform a calculation for each time period of a plurality of time periods of the pressure waveform, thereby resulting in a plurality of calculations for the plurality of time periods, respectively, wherein a duration of each time period is shorter than an entirety of the cardiac cycle and longer than a single time point, wherein each time period is shifted relative to an adjacent time period by an amount of time less than the duration of each time period such that each time period partially overlaps at least one other time period, wherein the plurality of time periods are arranged consecutively such that the plurality of time periods move left to right along the pressure waveform;
select a subset of the plurality of the pressure measurements based on the plurality of calculations;
determine a pressure ratio based on the subset of the plurality of pressure measurements; and
output the pressure ratio to a display device in communication with the processor.