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公开(公告)号：US11998488B2
公开(公告)日：2024-06-04
申请号：US17025842
申请日：2020-09-18
Applicant: AMO Development, LLC
Inventor： Hong Fu , Bryant M. Moore , Charles Vice
CPC classification number: A61F9/009 , A61F9/00814 , A61F9/0084 , A61F2009/0087 , A61F2009/00872 , A61F2009/00897
Abstract: A compact system for performing laser ophthalmic surgery is disclosed. An embodiment of the system includes a mode-locked fiber oscillator-based ultra-short pulsed laser capable of producing laser pulses in the range of 1 nJ to 5 μJ at a pulse repetition rate of between 5 MHz and 25 MHz, a resonant optical scanner oscillating at a frequency of 200 Hz and 21000 Hz, a scan-line rotator, a movable XY-san device, a z-scan device, and a controller configured to coordinate with the other components of the system to produce one or more desired incision patterns. The system also includes compact visualization optics for in-process monitoring using a beam-splitter inside the cone of a patient interface used to fixate the patient's eye during surgery. The system can be configured such that eye surgery is performed while the patient is either sitting upright, or lying on his or her back.
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公开(公告)号：US11852460B2
公开(公告)日：2023-12-26
申请号：US18157729
申请日：2023-01-20
Applicant: AMO DEVELOPMENT, LLC
Inventor： Zheng Sun , Daniel Bray , Zenon Witowski , Timothy Slotterback , Hong Fu
IPC: G01B11/24
CPC classification number: G01B11/2408
Abstract: A measurement apparatus for measuring a laser focus spot size, which includes a two-dimensional image detector and an imaging system which forms a magnified image of a focus spot located an object plane onto the image detector. The imaging system includes at least an objective lens. A sealed liquid container is secured over a part of the objective lens such as the optical surface of the objective lens is immersed in the liquid (e.g. water) within the container. The liquid container has a window through which the laser beam enters. An image processing method is also disclosed which processes the image obtained by the image detector to obtain the focus spot size while implementing an algorithm that corrects for the effect of ambient vibration.
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公开(公告)号：US11789256B2
公开(公告)日：2023-10-17
申请号：US17643584
申请日：2021-12-09
Applicant: AMO DEVELOPMENT, LLC
Inventor： Mohammad Saidur Rahaman , Hong Fu , Roger W. Accurso , Zenon Witowski
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.
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公开(公告)号：US11779491B2
公开(公告)日：2023-10-10
申请号：US17662397
申请日：2022-05-06
Applicant: AMO Development, LLC
Inventor： Hong Fu , Bryant M. Moore
CPC classification number: A61F9/009 , A61B18/201 , A61B18/203 , A61F9/008 , A61F9/0084 , A61F9/00825
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.
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75.发明公开公开(公告)号：US20230181368A1
公开(公告)日：2023-06-15
申请号：US17643812
申请日：2021-12-10
Applicant: AMO Development, LLC
Inventor： Cynthia Villanueva , Deepali Mehta-Hurt , Hong Fu , Jiandong Xu , Alireza Malek Tabrizi , Griffith Altmann
CPC classification number: A61F9/00827 , G02B26/101 , G02B26/108 , 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, within a central area of the lenticule where the sweeps overlap, the laser is periodically blanked (or delivered with significantly reduced pulse energy) to reduce the total energy delivered in that area.
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Patent Agency Ranking
76.发明申请公开(公告)号：US20230127288A1
公开(公告)日：2023-04-27
申请号：US18145017
申请日：2022-12-22
Applicant: AMO DEVELOPMENT, LLC
Inventor： Alireza Malek Tabrizi , Hong Fu , James E. Hill , Zenon Witowski
IPC: A61F9/008
Abstract: An ophthalmic surgical laser system includes: a laser that produces a pulsed laser beam having a pulse energy and pulse repetition rate; a high frequency fast scanner; an XY-scan device; a Z-scan device; and a controller. The controller controls the high frequency scanner to produce a scan line having a scan width; controls the XY-scan device and the Z-scan device to carry out of first sweep of the scan line in a first sweep direction and to carry out a second sweep of the scan line in a second sweep direction that is not parallel to the first sweep direction thereby defining an overlap region. At least one of the pulse energy, repetition rate, XY-scan speed, and the scan width is varied so as to accelerate the cutting speed and reduce the exposure of ophthalmic tissue in the overlap region to multiple exposures of laser pulses configured to modify ophthalmic tissue.
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公开(公告)号：US11564838B2
公开(公告)日：2023-01-31
申请号：US16923496
申请日：2020-07-08
Applicant: AMO Development, LLC
Inventor： Hong Fu , Alireza Malek Tabrizi
Abstract: Embodiments of this invention generally relate to ophthalmic laser procedures and, more particularly, to systems and methods for lenticular laser incision. 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 form a top lenticular incision and a bottom lenticular incision of a lens in the subject's eye, where each of the top and bottom lenticular incision includes a center concave portion and an edge transition portion that has a smooth convex shape and is smoothly joined to the center concave portion.
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公开(公告)号：US11561087B2
公开(公告)日：2023-01-24
申请号：US17452035
申请日：2021-10-22
Applicant: AMO DEVELOPMENT, LLC
Inventor： Zheng Sun , Daniel Bray , Zenon Witowski , Timothy Slotterback , Hong Fu
IPC: G01B11/24
Abstract: A measurement apparatus for measuring a laser focus spot size, which includes a two-dimensional image detector and an imaging system which forms a magnified image of a focus spot located an object plane onto the image detector. The imaging system includes at least an objective lens. A sealed liquid container is secured over a part of the objective lens such as the optical surface of the objective lens is immersed in the liquid (e.g. water) within the container. The liquid container has a window through which the laser beam enters. An image processing method is also disclosed which processes the image obtained by the image detector to obtain the focus spot size while implementing an algorithm that corrects for the effect of ambient vibration.
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公开(公告)号：US20220168144A1
公开(公告)日：2022-06-02
申请号：US17651242
申请日：2022-02-15
Applicant: AMO Development, LLC
Inventor： Alireza Malek Tabrizi , Hong Fu , James E. Hill , Mohammad Saidur Rahaman , Zenon Witowski
Abstract: Embodiments generally relate to ophthalmic laser procedures and, more particularly, to systems and methods for lenticular laser incision. 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 form a top lenticular incision and a bottom lenticular incision of a lens in a corneal stroma.
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公开(公告)号：US20220099961A1
公开(公告)日：2022-03-31
申请号：US17643584
申请日：2021-12-09
Applicant: AMO DEVELOPMENT, LLC
Inventor： Mohammad Saidur Rahaman , Hong Fu , Roger W. Accurso , Zenon Witowski
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.
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