公开(公告)号：US20250041116A1

公开(公告)日：2025-02-06

申请号：US18782278

申请日：2024-07-24

Applicant: Alcon Inc.

Inventor： Guangyao Jia ,  Ho Man Michael Fong ,  Kurt D. Leukanech ,  Collin Shane Wasson ,  Satish Yalamanchili

IPC: A61F9/007 ,  A61B17/00 ,  A61B90/00 ,  G16H20/40 ,  G16H40/63

Abstract: Embodiments of the present disclosure generally relate to systems and methods for measuring intraocular pressure (IOP) during ophthalmic surgery. In some embodiments, a method for measuring IOP is provided. The method includes measuring fluid pressure in a fluid flow path of a handpiece device using a pressure sensor disposed therein to obtain a fluid pressure measurement, determining a sensor temperature measurement of the pressure sensor, determining a predicted sensor zero offset based on the sensor temperature measurement using a determined zero offset correlation function, and adjusting the fluid pressure measurement with the predicted sensor zero offset to obtain an adjusted fluid pressure measurement.

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.