US 11,864,878 B2
Devices and methods for determining blood flow around a body lumen
George Wilfred Duval, Sudbury, MA (US); Michael Y. Ko, Waltham, MA (US); James Weldon, Newton, MA (US); and Namita M. Kallur, Hayward, CA (US)
Assigned to Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed by Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed on Feb. 19, 2021, as Appl. No. 17/180,264.
Application 17/180,264 is a continuation of application No. 16/011,925, filed on Jun. 19, 2018, granted, now 10,959,627.
Claims priority of provisional application 62/522,168, filed on Jun. 20, 2017.
Prior Publication US 2021/0169352 A1, Jun. 10, 2021
Int. Cl. A61B 5/026 (2006.01); A61B 5/107 (2006.01); A61B 5/1455 (2006.01); A61B 5/00 (2006.01); A61B 5/0205 (2006.01); A61B 5/349 (2021.01); A61B 5/027 (2006.01); A61B 5/0295 (2006.01); A61B 5/0285 (2006.01)
CPC A61B 5/0261 (2013.01) [A61B 5/0086 (2013.01); A61B 5/0205 (2013.01); A61B 5/1072 (2013.01); A61B 5/14551 (2013.01); A61B 5/349 (2021.01); A61B 5/4255 (2013.01); A61B 5/6853 (2013.01); A61B 5/6858 (2013.01); A61B 5/027 (2013.01); A61B 5/0285 (2013.01); A61B 5/0295 (2013.01); A61B 5/4216 (2013.01); A61B 5/4233 (2013.01); A61B 5/4238 (2013.01); A61B 2562/043 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A medical device, comprising:
a catheter;
an optical sensor disposed at or adjacent to a distal end of the catheter, the optical sensor including a photodetector and one or more emitters, the photodetector and each of the one or more emitters of the optical sensor being disposed linearly along a longitudinal axis of the catheter; and
a controller disposed within the catheter, the controller being configured to determine a thickness of tissue adjacent to the optical sensor based on input from the optical sensor;
wherein the one or more emitters are configured to collect a diffusion gradient of reflected and absorbed light in the tissue adjacent to the optical sensor.