US 11,867,924 B2
Visualizing catheter irrigation using schlieren images
Assaf Govari, Haifa (IL); Amit Fuchs, Hogla (IL); Eran Aharon, Haifa (IL); and Yehuda Algawi, Binyamina (IL)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on Dec. 24, 2020, as Appl. No. 17/133,989.
Prior Publication US 2022/0202480 A1, Jun. 30, 2022
Int. Cl. G02B 27/54 (2006.01); G01N 21/45 (2006.01); A61B 18/00 (2006.01)
CPC G02B 27/54 (2013.01) [A61B 18/00 (2013.01); G01N 21/45 (2013.01); G01N 21/455 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A system for visualizing catheter irrigation, the system comprising:
a fluid container, configured to: (i) contain a first fluid, which is at least partially transparent and has a first temperature, and (ii) receive into the first fluid a catheter having one or more irrigation holes;
a pump, configured to inject, through the one or more irrigation holes, a second fluid, which is at least partially transparent and has a second different temperature;
a schlieren imaging assembly, configured to acquire schlieren images of turbulence occurring in the first fluid when injecting the second fluid; and
a processor, which is configured to visualize the irrigation using the schlieren images.