US 12,239,358 B2
Devices and methods for fractional treatment of tissue
Amikam Gershonowitz, Tel Aviv (IL); Eyal Ben Esti, Tel Aviv (IL); and Mordechai Moti Elnekave, Haifa (IL)
Assigned to POLLOGEN LTD., Tel Aviv (IL)
Filed by POLLOGEN LTD., Tel Aviv (IL)
Filed on Jun. 6, 2024, as Appl. No. 18/736,081.
Claims priority of provisional application 63/471,294, filed on Jun. 6, 2023.
Prior Publication US 2024/0407829 A1, Dec. 12, 2024
Int. Cl. A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/14 (2013.01) [A61B 2018/00577 (2013.01); A61B 2018/1425 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A method for fractional treatment of tissue, the method comprising:
providing:
a plurality of elongated electrodes having a first polarity; and
a single flat electrode located in vicinity of the elongated electrodes and having a second polarity opposite the first polarity;
placing:
the single flat electrode in contact with a tissue surface; and
tips of the plurality of elongated electrodes into contact with the tissue surface;
supplying a first RF signal profile to the elongated electrodes and the single flat electrode;
supplying, upon detecting a closed circuit between the plurality of elongated electrodes and the single flat electrode, a second RF signal profile adapted to cause ablation of the tissue in contact with the tips of the plurality of elongated electrodes;
inserting, while supplying the second RF signal, the plurality of elongated electrodes into the tissue selectively and variably, at predetermined rates corresponding to the ablation of the tissue, and for a predetermined insertion period until reaching a predetermined depth; and
withdrawing the plurality of elongated electrodes out of the tissue.