公开(公告)号：US12216272B2

公开(公告)日：2025-02-04

申请号：US18487027

申请日：2023-10-13

Applicant: AMO Development, LLC

Inventor： Mohammad Saidur Rahaman ,  Hong Fu ,  Roger W. Accurso ,  Zenon Witowski

IPC: G02B26/08 ,  A61B3/13 ,  A61F9/008 ,  G01J1/42 ,  G02B27/10

Abstract: An ophthalmic laser system uses a non-confocal configuration to determine a laser beam focus position relative to the patient interface (PI) surface. The system includes a light intensity detector with no confocal lens or pinhole between the detector and the objective lens. When the objective focuses the light to a target focus point inside the PI lens at a particular offset from its distal surface, the light signal at the detector peaks. The offset value is determined by fixed system parameters, and can also be empirically determined by directly measuring the PI lens surface by observing the effect of plasma formation at the glass surface. During ophthalmic procedures, the laser focus is first scanned insider the PI lens, and the target focus point location is determined from the peak of the detector signal. The known offset value is then added to obtain the location of the PI lens surface.

公开(公告)号：US12053417B2

公开(公告)日：2024-08-06

申请号：US17303960

申请日：2021-06-11

Applicant: AMO Development, LLC

Inventor： Hong Fu ,  Patrick De Guzman ,  Robert Heitel ,  Alireza Malek Tabrizi

IPC: A61F9/008

CPC classification number: A61F9/00836 ,  A61F9/00825 ,  A61F2009/00844 ,  A61F2009/00872 ,  A61F2009/00897

Abstract: Embodiments of this invention generally relate to ophthalmic laser procedures and, more particularly, to systems and methods for creating synchronized three-dimensional laser incisions. In an embodiment, an ophthalmic surgical laser system comprises a laser delivery system for delivering a pulsed laser beam to a target in a subject's eye, an XY-scan device to deflect the pulsed laser beam, a Z-scan device to modify a depth of a focus of the pulsed laser beam, and a controller configured to synchronize an oscillation of the XY-scan device and an oscillation of the Z-device to form an angled three-dimensional laser tissue dissection.

公开(公告)号：US12005002B2

公开(公告)日：2024-06-11

申请号：US17449249

申请日：2021-09-28

Applicant: AMO Development, LLC

Inventor： Hong Fu ,  Alireza Malek Tabrizi

IPC: A61F9/008

CPC classification number: A61F9/00829 ,  A61F2009/00872

Abstract: A corneal lenticule extraction procedure provides convenient re-treatment options when treatment interruptions occur. The procedure is executed by an ophthalmic laser system according to a programmed treatment plan, which defines an entry cut, an optional ring cut, a bottom lenticule incision having an optical zone, and a flat top bed incision. If an interruption occurs during the entry cut, the treatment plan is re-aligned with the partially formed entry cut and continued, or with a new entry cut placed at a different angular position. If an interruption occurs during the ring cut, the treatment plan is revised to define a larger ring cut concentric with the partially formed ring cut. If an interruption occurs during the bottom or top incision, the depth of the partially formed bottom or top incision is measured, and the treatment plan is revised to form a deeper bottom incision or a shallower top incision, respectively.

公开(公告)号：US20240118536A1

公开(公告)日：2024-04-11

申请号：US18487027

申请日：2023-10-13

Applicant: AMO Development, LLC

Inventor： Mohammad Saidur Rahaman ,  Hong Fu ,  Roger W. Accurso ,  Zenon Witowski

IPC: G02B26/08 ,  A61B3/13 ,  A61F9/008 ,  G01J1/42 ,  G02B27/10

CPC classification number: G02B26/0875 ,  A61B3/13 ,  A61F9/008 ,  G01J1/4257 ,  G02B27/108 ,  A61F2009/00855 ,  A61F2009/00897

Abstract: An ophthalmic laser system uses a non-confocal configuration to determine a laser beam focus position relative to the patient interface (PI) surface. The system includes a light intensity detector with no confocal lens or pinhole between the detector and the objective lens. When the objective focuses the light to a target focus point inside the PI lens at a particular offset from its distal surface, the light signal at the detector peaks. The offset value is determined by fixed system parameters, and can also be empirically determined by directly measuring the PI lens surface by observing the effect of plasma formation at the glass surface. During ophthalmic procedures, the laser focus is first scanned insider the PI lens, and the target focus point location is determined from the peak of the detector signal. The known offset value is then added to obtain the location of the PI lens surface.

公开(公告)号：US11944575B2

公开(公告)日：2024-04-02

申请号：US17379976

申请日：2021-07-19

Applicant: AMO DEVELOPMENT, LLC

Inventor： Alireza Malek Tabrizi ,  Hong Fu ,  James E. Hill

IPC: A61F9/008 ,  A61B3/00

CPC classification number: A61F9/00827 ,  A61B3/0008 ,  A61F9/008 ,  A61F9/00825 ,  A61F2009/0087 ,  A61F2009/00872 ,  A61F2009/00897

Abstract: Embodiments generally relate to ophthalmic laser procedures and, more particularly, to systems and methods for lenticular laser incisions to form a top lenticular incision, a bottom lenticular incision of a lens in the subject's eye, an added shape between the top and bottom incisions where the added shape has no corrective power and a transition ring bisecting both the top and bottom lenticular incisions.

公开(公告)号：US11903878B2

公开(公告)日：2024-02-20

申请号：US17457419

申请日：2021-12-02

Applicant: AMO Development, LLC

Inventor： Andrew Voorhees ,  Harvey Liu ,  Hong Fu ,  Alireza Malek Tabrizi ,  Nima Khatibzadeh ,  Deepali Mehta-Hurt ,  Cynthia Villanueva ,  James Hill ,  Alisyn Facemire

IPC: A61F9/008 ,  A61B18/20 ,  A61B18/00

CPC classification number: A61F9/00836 ,  A61B2018/00779 ,  A61B2018/20353 ,  A61B2018/20355 ,  A61F2009/00872 ,  A61F2009/00897

Abstract: A method implemented in an ophthalmic surgical laser system that employs a resonant scanner, scan line rotator, and XY- and Z-scanners, for forming a corneal flap in a patient's eye with improved bubble management during each step of the flap creation process. A pocket cut is formed first below bed level, followed by the bed connected to the pocket cut, then by a side cut extending from the bed to the anterior corneal surface. The pocket cut includes a pocket region located below the bed level and a ramp region connecting the pocket region to the bed. The bed is formed by a hinge cut and a first ring cut at lower laser energies, followed by a bed cut and then a second ring cut, which ensures that any location in the flap bed is cut twice to minimize tissue adhesion. The side cut is formed by multiple side-cut layers at different depths which are joined together. All cuts are formed by scanning a laser scan line generated by the resonant scanner.

公开(公告)号：US11654052B2

公开(公告)日：2023-05-23

申请号：US17095722

申请日：2020-11-11

Applicant: AMO DEVELOPMENT, LLC

Inventor： Hong Fu ,  Alireza Malek Tabrizi ,  Nima Khatibzadeh

IPC: A61F9/008 ,  A61B18/20

CPC classification number: A61F9/00804 ,  A61F9/00814 ,  A61B2018/20353 ,  A61B2018/20553 ,  A61B2018/205547 ,  A61F9/00827 ,  A61F2009/0087 ,  A61F2009/00897

Abstract: An ophthalmic surgical laser system and method for forming a lenticule in a subject's eye using “fast-scan-slow-sweep” scanning scheme. A high frequency scanner forms a fast scan line, which is placed by the XY and Z scanners at a location tangential to a parallel of latitude of the surface of the lenticule. The XY and Z scanners then move the scan line in a slow sweep trajectory along a meridian of longitude of the surface of the lenticule in one sweep. Multiple sweeps are performed along different meridians to form the entire lenticule surface, and a prism is used to change the orientation of the scan line of the high frequency scanner between successive sweeps. In each sweep, the sweeping speed along the meridian is variable, being the slowest at the edge of the lenticule and the fastest near the apex.

公开(公告)号：US20220378615A1

公开(公告)日：2022-12-01

申请号：US17664034

申请日：2022-05-18

Applicant: AMO Development, LLC

Inventor： Alireza Malek Tabrizi ,  James Hill ,  Nima Khatibzadeh ,  Pavel Vodkin ,  Harvey Liu ,  Hong Fu ,  Griffith Altmann

IPC: A61F9/008

Abstract: A method implemented in an ophthalmic surgical laser system for forming a corneal flap in a patient's eye with improved bubble management. The flap includes a horizontal bed and a vertical or near vertical side cut around the periphery of the bed except for an uncut hinge area. The side cut has a bubble barrier layer that can prevent bubbles formed by the laser-tissue interaction from escaping into an interface between the corneal and the patient interface lens. In some embodiments, the bubble barrier layer is a thin uncut layer, located in the epithelium of the cornea, that separates the side cut into two portions. In other embodiments, the side cut does not reach the anterior corneal surface, leaving an uncut bubble barrier layer located with the epithelium. In other embodiments, an additional side cut portion is formed through the uncut bubble barrier layer as the last step.

公开(公告)号：US20220257415A1

公开(公告)日：2022-08-18

申请号：US17662397

申请日：2022-05-06

Applicant: AMO Development, LLC

Inventor： Hong Fu ,  Bryant M. Moore

IPC: A61F9/009 ,  A61F9/008 ,  A61B18/20

Abstract: Systems and methods for adjusting an angle of incidence of a laser surgery system include a laser source to produce a laser beam and an optical delivery system to output the laser beam pulses to an object at an adjustable incident angle. A first rotator assembly receives the beam from the laser source along a first beam axis. The first rotator assembly rotates around the first beam axis and the first rotator assembly outputs the beam along a second beam axis different from the first beam axis. A second rotator assembly receives the beam from the first rotator assembly along the second beam axis. The second rotator assembly rotates around the second beam axis. The second rotator assembly follows the rotation of the first rotator assembly and the first rotator assembly is independent of the rotation of the second rotator assembly.

公开(公告)号：US20220175581A1

公开(公告)日：2022-06-09

申请号：US17457419

申请日：2021-12-02

Applicant: AMO Development, LLC

Inventor： Andrew Voorhees ,  Harvey Liu ,  Hong Fu ,  Alireza Malek Tabrizi ,  Nima Khatibzadeh ,  Deepali Mehta-Hurt ,  Cynthia Villanueva ,  James Hill ,  Alisyn Facemire

IPC: A61F9/008

Abstract: A method implemented in an ophthalmic surgical laser system that employs a resonant scanner, scan line rotator, and XY- and Z-scanners, for forming a corneal flap in a patient's eye with improved bubble management during each step of the flap creation process. A pocket cut is formed first below bed level, followed by the bed connected to the pocket cut, then by a side cut extending from the bed to the anterior corneal surface. The pocket cut includes a pocket region located below the bed level and a ramp region connecting the pocket region to the bed. The bed is formed by a hinge cut and a first ring cut at lower laser energies, followed by a bed cut and then a second ring cut, which ensures that any location in the flap bed is cut twice to minimize tissue adhesion. The side cut is formed by multiple side-cut layers at different depths which are joined together. All cuts are formed by scanning a laser scan line generated by the resonant scanner.