US 12,070,299 B2
Systems and methods for reconstruction of intra-body electrical readings to anatomical structure
Eli Dichterman, Haifa (IL); Yitzhack Schwartz, Haifa (IL); Yizhaq Shmayahu, Ramat-HaSharon (IL); and Shlomo Ben-Haim, Milan (IT)
Assigned to Navix International Limited, Road Town (VG)
Filed by Navix International Limited, Road Town (VG)
Filed on Apr. 19, 2022, as Appl. No. 17/723,500.
Application 17/723,500 is a continuation of application No. 16/476,875, granted, now 11,311,204, issued on Apr. 26, 2022, previously published as PCT/IB2018/050192, filed on Jan. 12, 2018.
Claims priority of provisional application 62/546,775, filed on Aug. 17, 2017.
Claims priority of provisional application 62/445,433, filed on Jan. 12, 2017.
Prior Publication US 2022/0265161 A1, Aug. 25, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/0536 (2021.01); A61B 5/00 (2006.01); A61B 5/0538 (2021.01); A61B 5/06 (2006.01)
CPC A61B 5/0536 (2013.01) [A61B 5/0538 (2013.01); A61B 5/068 (2013.01); A61B 5/6852 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of determining location of an electrode inside a body cavity of a subject based on intrabody measurements of a plurality of crossing electromagnetic fields established within the body cavity, the method comprising:
receiving measurements of the plurality of crossing electromagnetic fields measured using two sensors carried on an intrabody probe at a known distance from each other, the measuring being carried out with the intrabody probe at more than 150 locations in the body cavity; and
assigning the measurements of the plurality of crossing electromagnetic fields to locations using a transformation selected to reduce cost of a cost function, the cost function being increased as a function of distances between sister locations becoming increasingly different than the known distance; and
applying the transformation to measurements of the plurality of crossing electromagnetic fields, the plurality of crossing electromagnetic fields being measured substantially simultaneously by said two sensors;
wherein sister locations are locations assigned to sister measurements by the transformation, and sister measurements are measurements of the plurality of crossing electromagnetic fields measured substantially simultaneously by the two sensors carried on the intrabody probe at the known distance from each other.