公开(公告)号：US20230270591A1

公开(公告)日：2023-08-31

申请号：US18173864

申请日：2023-02-24

Applicant: Alcon Inc.

Inventor： James Y. Chon ,  Ahmad Salehi ,  Kurt D. Leukanech ,  Satish Yalamanchili ,  Dan Teodorescu ,  Ho Man Michael Fong

IPC: A61F9/007

CPC classification number: A61F9/00745 ,  A61B2017/00402

Abstract: An ultrasonic handpiece includes a piezoelectric element assembly. Control signals drive the piezoelectric element assembly simultaneously in a first mode of oscillation and a second mode of oscillation. Feedback of a resulting oscillation of the piezoelectric element assembly in the first mode and the second mode is generated. Based on the feedback, the frequency of each of the first mode and second mode is independently adjusted, as needed, so that the resulting oscillation of each of the first mode and the second mode is each approximately at its respective resonant frequency.