US 12,232,861 B2
Apparatus and method for passive markers localization within a body
Shalom Strano, Jerusalem (IL); Alexander Lomes, Moshav Hosen (IL); and Steve Krupa, Haifa (IL)
Assigned to SPRINGLOC LTD., Jerusalem (IL)
Filed by SPRINGLOC LTD., Jerusalem (IL)
Filed on Jun. 16, 2022, as Appl. No. 17/841,663.
Application 17/841,663 is a continuation in part of application No. 17/724,487, filed on Apr. 19, 2022.
Claims priority of provisional application 63/218,973, filed on Jul. 7, 2021.
Prior Publication US 2023/0011384 A1, Jan. 12, 2023
Int. Cl. A61B 5/06 (2006.01); A61B 90/00 (2016.01); A61B 90/98 (2016.01)
CPC A61B 5/064 (2013.01) [A61B 90/39 (2016.02); A61B 90/98 (2016.02); A61B 2090/3929 (2016.02); A61B 2090/3945 (2016.02); A61B 2090/3966 (2016.02); A61B 2090/3983 (2016.02)] 36 Claims
OG exemplary drawing
 
1. A system for locating a region of interest (ROI) within a patient's body, comprising:
one or more markers configured for implantation within the patient's body so as to mark the ROI;
a pad configured to transmit an electromagnetic reference signal toward the patient's body, the reference signal being configured to activate a selected one of the markers without activating others of the markers;
a locator configured to:
receive the reference signal,
transmit a test signal, which is derived from the reference signal, into the patient's body, such that the activated marker receives the test signal and transmits a response signal derived from the test signal, and
receive the response signal; and
a processing unit configured to calculate a distance from the locator to the activated marker based on a phase difference between the response signal and the test signal or between the response signal and the reference signal.