US 12,290,307 B2
Catheter ultrasound ablation
Ran Sela, Ramat Hasharon (IL); Yuri Megel, Haifa (IL); and Shimon Eckhouse, Haifa (IL)
Assigned to HEALIUM MEDICAL LTD, Yokneam (IL)
Filed by HEALIUM MEDICAL LTD, Yokneam (IL)
Filed on May 20, 2021, as Appl. No. 17/325,814.
Application 17/325,814 is a continuation of application No. 17/260,458, granted, now 11,813,019, previously published as PCT/IL2019/050941, filed on Aug. 22, 2019.
Claims priority of provisional application 62/720,995, filed on Aug. 22, 2018.
Prior Publication US 2021/0267680 A1, Sep. 2, 2021
Int. Cl. A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1492 (2013.01) [A61B 2018/00029 (2013.01); A61B 2018/00267 (2013.01); A61B 2018/00375 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00702 (2013.01); A61B 2018/00791 (2013.01); A61B 2018/00982 (2013.01); A61B 2018/00994 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for ablating an ostium of a blood vessel of a subject that extends from a chamber of a heart of the subject, the method comprising:
positioning an ultrasound transducer at the blood vessel ostium that extends from the chamber of the heart;
rotating the transducer about its axis and scanning tissue of the blood vessel ostium;
recording one or more baseline returned signals from the tissue and creating a baseline image of the blood vessel ostium based on at least one of the returned signals;
ablating tissue of the blood vessel ostium in consecutive segments by rotating the transducer segmentally until full rotation is completed;
recording the returned signals of the ablated segments in real-time with respect to the ablation of the ablated segments, and creating a real-time image based on the one or more returned signals;
comparing the real-time returned signals or the real-time image to the baseline returned signals image;
identifying changes in the real-time returned signals or real-time image with respect to the baseline returned signals or baseline image that represent changes in the tissue that correspond to ablation lesion formation; and
terminating ablation after the identified changes indicate an achieved predetermined level of ablation lesion formation.