US 11,707,207 B2
Device, system, and method for assessing intravascular pressure
Jeremy Stigall, Carlsbad, CA (US); and Joseph Lauinger, San Diego, CA (US)
Assigned to PHILIPS IMAGE GUIDED THERAPY CORPORATION, San Diego, CA (US)
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Filed on Jul. 13, 2020, as Appl. No. 16/927,676.
Application 16/927,676 is a continuation of application No. 14/702,482, filed on May 1, 2015, granted, now 10,709,357.
Claims priority of provisional application 61/987,618, filed on May 2, 2014.
Prior Publication US 2020/0337595 A1, Oct. 29, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/0215 (2006.01); A61B 5/107 (2006.01); A61B 8/08 (2006.01); A61B 5/00 (2006.01); A61B 8/12 (2006.01); A61B 5/02 (2006.01); A61B 8/00 (2006.01); A61B 8/06 (2006.01)
CPC A61B 5/1076 (2013.01) [A61B 5/02007 (2013.01); A61B 5/0215 (2013.01); A61B 5/6852 (2013.01); A61B 5/7278 (2013.01); A61B 8/0891 (2013.01); A61B 8/12 (2013.01); A61B 5/02158 (2013.01); A61B 5/6886 (2013.01); A61B 5/7435 (2013.01); A61B 8/06 (2013.01); A61B 8/445 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An apparatus for assessing the severity of stenosis in a blood vessel, comprising:
a processor configured for communication with an intravascular catheter positionable within the blood vessel, wherein the processor is configured to:
receive physiological data of the blood vessel from a first sensor of the intravascular catheter;
receive, from at least one of a second sensor of the intravascular catheter or an x-ray imaging device, data representing a degree of expansion of a centering assembly of the intravascular catheter;
receive data representing a size of the intravascular catheter;
calculate an offset correlation based on:
the data representing the size of the intravascular catheter; and
the data representing the degree of expansion of the centering assembly;
calculate a flow reserve index representative of an impact to blood flow based on the physiological data and the offset correlation; and
output the flow reserve index to a display in communication with the processor.