公开(公告)号：US12290312B2

公开(公告)日：2025-05-06

申请号：US17083707

申请日：2020-10-29

Applicant: Alcon Inc.

Inventor： Gerald David Bacher ,  Derek Chen ,  Conrad Sawicz ,  Dan Teodorescu

IPC: H01S3/13 ,  A61B18/20 ,  H01S3/0941

Abstract: Systems and methods are disclosed for measuring pulsed laser output. An example system comprises a laser configured to emit output in pulses; at least one sensor positioned to sense laser output and configured to convert that output into electrical signals; an edge detector configured to detect at least leading edges of a plurality of laser pulses; an analog to digital converter configured to convert electrical signals from a sensor into digital signals indicative of laser power output; and a controller; wherein, based on the detection of at least the leading edges of the laser pulses, the controller is configured to obtain samples of laser power output during each of the laser pulses. The system may use the samples of laser power output in a feedback loop to automatically adjust laser power.

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.

公开(公告)号：US20210135424A1

公开(公告)日：2021-05-06

申请号：US17083707

申请日：2020-10-29

Applicant: Alcon Inc.

Inventor： Gerald David Bacher ,  Derek Chen ,  Conrad Sawicz ,  Dan Teodorescu

IPC: H01S3/13 ,  H01S3/0941 ,  H01S3/11

Abstract: Systems and methods are disclosed for measuring pulsed laser output. An example system comprises a laser configured to emit output in pulses; at least one sensor positioned to sense laser output and configured to convert that output into electrical signals; an edge detector configured to detect at least leading edges of a plurality of laser pulses; an analog to digital converter configured to convert electrical signals from a sensor into digital signals indicative of laser power output; and a controller; wherein, based on the detection of at least the leading edges of the laser pulses, the controller is configured to obtain samples of laser power output during the laser pulses. The system may refrain from sampling laser power output between laser pulses or may sample laser power output between laser pulses at a reduced sample rate. The system may use the samples of laser power output in a feedback loop to automatically adjust laser power.