US 12,137,967 B2
Accurate positioning and shape visualization of balloon catheter ablation tags
Eid Adawi, Tur'an (IL); and Zvi Dekel, Zichron Yaakov (IL)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on Oct. 27, 2020, as Appl. No. 17/081,926.
Claims priority of provisional application 62/934,331, filed on Nov. 12, 2019.
Prior Publication US 2021/0137588 A1, May 13, 2021
Int. Cl. A61B 18/14 (2006.01); A61B 18/00 (2006.01); A61B 90/00 (2016.01)
CPC A61B 18/1492 (2013.01) [A61B 90/37 (2016.02); A61B 90/39 (2016.02); A61B 2018/0022 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00982 (2013.01); A61B 2090/374 (2016.02); A61B 2090/3762 (2016.02); A61B 2090/378 (2016.02); A61B 2090/3937 (2016.02)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
an invasive medical probe configured to be inserted into a body cavity and comprising a distal end having at least one elongated electrode disposed along the distal end;
a position transducer associated with the medical probe;
a memory configured to store a three-dimensional (3D) model of the body cavity;
a display; and
a processor configured:
to receive, from the position transducer, signals indicative of orientation and location coordinates of the distal end within the body cavity,
to identify, based on the 3D model and the signals, a segment along a length of a given elongated electrode that is in contact with tissue at a site on an inner surface of the body cavity, while parts of the given elongated electrode other than the identified segment are not in contact with the inner surface of the body cavity,
to determine, based on the 3D model and the signals, an engagement contour of the segment along the length of the given elongated electrode that is in contact with the tissue, the engagement contour being indicative of an alignment between the distal end and the site, and
to render to the display a graphical representation of the 3D model with a visual marker contour at a location on the 3D model corresponding to the engagement contour and to the site contacted by the segment of the given elongated electrode.