US 12,263,033 B2
Historical ultrasound data for display of live location data
Tamir Avraham Yellin, Yokneam Hamoshava (IL); Natan Sharon Katz, Atlit (IL); Benjamin Cohen, Haifa (IL); and Lior Zar, Poria Illit (IL)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on Nov. 12, 2019, as Appl. No. 16/681,408.
Prior Publication US 2021/0137488 A1, May 13, 2021
Int. Cl. A61B 8/08 (2006.01); A61B 8/00 (2006.01); A61B 8/12 (2006.01); A61B 8/13 (2006.01)
CPC A61B 8/0841 (2013.01) [A61B 8/12 (2013.01); A61B 8/13 (2013.01); A61B 8/4263 (2013.01); A61B 8/5207 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for displaying information to a surgeon at a time a catheter is inserted into a patient, the method comprising:
sending first electromagnetic signals to an ultrasound transducer;
receiving, based on the first electromagnetic signals, a first ultrasound slice from the ultrasound transducer during a first time period, the first ultrasound slice corresponding to a first ultrasound position including at least first coordinates of the ultrasound transducer, wherein the first coordinates are a first location on an x-axis, a y-axis and a z-axis relative to a first reference point;
sending second electromagnetic signals to the ultrasound transducer;
receiving, based on the second electromagnetic signals, a second ultrasound slice from the ultrasound transducer during a second time period, the second ultrasound slice corresponding to a second ultrasound position including at least second coordinates of the ultrasound transducer, wherein the second coordinates are a second location on the x-axis, the y-axis and the z-axis relative to the first reference point;
storing the first ultrasound slice and the second ultrasound slice;
determining, a first catheter position of the catheter in first catheter coordinates at a third time period, wherein the first catheter coordinates are relative to a second reference point and the third time period is subsequent to the first time period and the second time period;
selecting either the first ultrasound slice or the second ultrasound slice as a selected slice by comparing the first catheter position, the first ultrasound position, and the second ultrasound position, wherein the first ultrasound slice is selected as the selected slice when the comparing indicates that the first catheter position is closer to the first ultrasound position and the second ultrasound slice is selected as the selected slice when the comparing indicates that the first catheter position is closer to the second ultrasound position;
determining a live location of the catheter relative to the selected slice; and
displaying the live location of the catheter and the selected slice as the information to the surgeon.