公开(公告)号：US20210202062A1

公开(公告)日：2021-07-01

申请号：US17102424

申请日：2020-11-23

Applicant: AMO Development, LLC

Inventor： Paul Gray ,  Cynthia Villanueva ,  Guangming Dai

IPC: G16H20/40 ,  A61F9/008 ,  G06N3/08

Abstract: A motor position compensation method for an ophthalmic surgical laser system employs a deep artificial neural network to characterize motor following errors of the motors of the system. The artificial neural network is trained using a large number of commanded motor positions and corresponding measured actual motor positions (measured by encoders associated with the motors) as training data, to obtain a trained artificial neural network that can predict the actual motor position for any commanded motor position. Before executing a treatment scan, the original commanded motor positions calculated from the intended scan pattern are inputted to the trained artificial neural network to predict the actual motor positions, and the predicted actual motor positions are used to adjust the original commanded motor positions. The adjusted commanded motor positions are then used to perform the treatment scan, which produces an actual scan pattern that more closely match the intended scan pattern.

公开(公告)号：US11890231B2

公开(公告)日：2024-02-06

申请号：US17102431

申请日：2020-11-23

Applicant: AMO Development, LLC

Inventor： Paul Gray ,  Guangming Dai ,  Alireza Malek Tabrizi ,  Hong Fu

IPC: A61F9/008 ,  A61F9/007 ,  G06F30/23

CPC classification number: A61F9/00814 ,  A61F9/00763 ,  G06F30/23 ,  A61F2009/00844

Abstract: An ophthalmic surgical laser system includes a laser beam delivery system having multiple moving components for scanning a laser focal spot in a target eye tissue, where the motors that actuate some of the moving components are equipped with respective digital encoders that measure actual motor positions. A controller controls the laser beam delivery system to perform a treatment scan, while recording the actual motor positions from the encoders. Using the actual motor positions and a calibration relationship between actual motor positions and delivered laser focal spot positions in a target tissue, a laser cutting pattern is digitally reconstructed, which represents the incisions actually achieved by the treatment scan. The reconstructed laser cutting pattern may be visually inspected and further analyzed, e.g. to compare it to the intended laser cutting pattern used to execute the treatment scan, to calculate the achieved refractive correction, or to simulate tissue resetting.

公开(公告)号：US20210196518A1

公开(公告)日：2021-07-01

申请号：US17102431

申请日：2020-11-23

Applicant: AMO Development, LLC

Inventor： Paul Gray ,  Guangming Dai ,  Alireza Malek Tabrizi ,  Hong Fu

IPC: A61F9/008 ,  A61F9/007 ,  G06F30/23

Abstract: An ophthalmic surgical laser system includes a laser beam delivery system having multiple moving components for scanning a laser focal spot in a target eye tissue, where the motors that actuate some of the moving components are equipped with respective digital encoders that measure actual motor positions. A controller controls the laser beam delivery system to perform a treatment scan, while recording the actual motor positions from the encoders. Using the actual motor positions and a calibration relationship between actual motor positions and delivered laser focal spot positions in a target tissue, a laser cutting pattern is digitally reconstructed, which represents the incisions actually achieved by the treatment scan. The reconstructed laser cutting pattern may be visually inspected and further analyzed, e.g. to compare it to the intended laser cutting pattern used to execute the treatment scan, to calculate the achieved refractive correction, or to simulate tissue resetting.