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：US12102567B2

公开(公告)日：2024-10-01

申请号：US17491986

申请日：2021-10-01

Applicant: Alcon Inc.

Inventor： Conrad Sawicz ,  Derek Y Chen

IPC: A61F9/008 ,  H01S3/10

CPC classification number: A61F9/00823 ,  H01S3/10007

Abstract: Particular embodiments disclosed herein provide a surgical laser system comprising a laser source, a lens, a memory, and a processor in data communication with the memory and configured to execute instructions which cause the processor to control the laser source based on a detection signal received from a circuit. The circuit comprises a first amplifier, a second amplifier, and a switch coupled between the second amplifier and a reference potential node and whose state is based on an output of a first comparator. The circuit further comprises a second comparator coupled to the second amplifier and a logic gate coupled to the first comparator and the second comparator.

公开(公告)号：US20220110793A1

公开(公告)日：2022-04-14

申请号：US17491986

申请日：2021-10-01

Applicant: Alcon Inc.

Inventor： Conrad Sawicz ,  Derek Y. Chen

IPC: A61F9/008 ,  H01S3/10

Abstract: Particular embodiments disclosed herein provide a surgical laser system comprising a laser source, a lens, a memory, and a processor in data communication with the memory and configured to execute instructions which cause the processor to control the laser source based on a detection signal received from a circuit. The circuit comprises a first amplifier, a second amplifier, and a switch coupled between the second amplifier and a reference potential node and whose state is based on an output of a first comparator. The circuit further comprises a second comparator coupled to the second amplifier and a logic gate coupled to the first comparator and the second comparator.

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.

公开(公告)号：US20230414413A1

公开(公告)日：2023-12-28

申请号：US18329929

申请日：2023-06-06

Applicant: Alcon Inc.

Inventor： Ronald T. Smith ,  Alireza Mirsepassi ,  Neda Dadashzadeh ,  Yuchao Liu ,  Conrad Sawicz

IPC: A61F9/008 ,  A61B3/10

CPC classification number: A61F9/00823 ,  A61F9/00825 ,  A61B3/1015

Abstract: Aspects of the present disclosure provide techniques for performing a safety test of a laser diode associated with an ophthalmic surgical apparatus. An example method determining a measured slope efficiency of the laser diode based on a plurality of different current levels applied to an input of the laser diode and a plurality of different output power levels associated with the laser diode, determining an expected slope efficiency of the laser diode based on a measured operating temperature of the ophthalmic surgical apparatus, determining a result of the safety test of the laser diode based on the measured slope efficiency of the laser diode and the expected slope efficiency for the laser diode, and outputting an electrical signal indicating a result of the safety test of the laser diode.

公开(公告)号：US20220111159A1

公开(公告)日：2022-04-14

申请号：US17491919

申请日：2021-10-01

Applicant: Alcon Inc.

Inventor： Conrad Sawicz

IPC: A61M13/00 ,  A61F9/007

Abstract: Embodiments described herein generally relate to apparatus and methods for verifying the concentration of mixed gas to be used for ophthalmic administration. In an embodiment is provided a method that includes introducing a first portion of mixed gas into a chamber, determining a temperature change of the first portion which is indicative of a parameter of the first portion, determining that the parameter satisfies a predetermined value, and introducing a second portion of mixed gas into a patient's eye. In another embodiment is provided a method that includes exposing an element inside a chamber to a first portion of mixed gas, determining a change in a physical characteristic of the element that changes in response to a stimulus, the physical characteristic indicative of a parameter of the first portion, determining that the parameter satisfies a predetermined value, and introducing a second portion of mixed gas into a patient's eye.

公开(公告)号：US11160910B2

公开(公告)日：2021-11-02

申请号：US16218964

申请日：2018-12-13

Applicant: Alcon Inc.

Inventor： Sean Christopher Madden ,  Conrad Sawicz ,  Ryan Makoto Takakawa

IPC: A61M1/00 ,  A61M5/142 ,  F04B43/12

Abstract: A surgical console has a receptacle for receiving a surgical fluidics cassette. The receptacle has a light source that transmits light to light pipes in the surgical fluidics cassette. The light pipes transmit light to a light transmissive optical interface surrounded by an opaque frame in the surgical fluidics cassette. The opaque frame is located at a fluid level detection system in the cassette. The system illuminates fluidic connectors on the surgical fluidics cassette without interfering with the fluid level detection system of a surgical console.