公开(公告)号：US20230201033A1

公开(公告)日：2023-06-29

申请号：US18181267

申请日：2023-03-09

Applicant: Alcon Inc.

Inventor： Daryush AGAHI ,  Jiansheng ZHOU

IPC: A61F9/007 ,  G05D7/06 ,  H01F7/06 ,  H01F7/16 ,  F16K37/00 ,  F16K31/06

CPC classification number: A61F9/00763 ,  G05D7/0623 ,  G05D7/0635 ,  H01F7/064 ,  H01F7/16 ,  F16K37/0041 ,  F16K31/0603 ,  A61B2017/0019

Abstract: Systems and methods for optimizing the application of pulse width modulation (PWM) in a voltage signal for delivering a current in a valve used to alternatively deliver pressurized gas to and vent from chambers in a vitrectomy probe used to drive a cutter.