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11.发明公开公开(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
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：US11253398B2
公开(公告)日：2022-02-22
申请号：US15630629
申请日：2017-06-22
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：US11156453B2
公开(公告)日：2021-10-26
申请号：US16907105
申请日：2020-06-19
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：US20200318952A1
公开(公告)日：2020-10-08
申请号：US16907105
申请日：2020-06-19
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：US20240374428A1
公开(公告)日：2024-11-14
申请号：US18661507
申请日：2024-05-10
Applicant: AMO Development, LLC
Inventor： Alireza Malek Tabrizi , Griffith Altmann , Harvey Liu , Zenon Witowski , Mohammad Saidur Rahaman , Hong Fu
IPC: A61F9/008
Abstract: During laser ophthalmic procedures, back-reflected treatment laser light is detected by an auto-Z module and analyzed in real-time to determine various aspects of laser-tissue interaction during the procedure. This method can detect the presence of “black spots” (locations where no laser-tissue interaction occurred), sub-optimal incision quality, etc. in real time, and allows for dynamical adjustment of the laser treatment parameters such as pulse energy, laser spot separation, etc. to correct the detected problems. The auto-Z signal analysis may also depend on which incision segment or region is currently being cut, to optimally control different cutting segments. This method improves corneal incision quality and helps to achieves consistent laser-tissue interaction from patient to patient.
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Patent Agency Ranking
公开(公告)号：US20230248573A1
公开(公告)日：2023-08-10
申请号：US18301948
申请日：2023-04-17
Applicant: AMO Development, LLC
Inventor： Jose L. Garcia , Roger W. Accurso , Daryl Wong , Zenon Witowski
IPC: A61F9/009
CPC classification number: A61F9/009 , A61F2210/009
Abstract: Apparatus and method for interfacing an ophthalmic surgical laser system with a patient's eye using a single-piece patient interface (PI). The PI includes a hollow shell, with an applanation lens and a flexible skirt at its lower end. Through channels are formed around the applanation lens to connect the spaces above and below the lens. When the PI is coupled to the laser system and the eye, the upper rim of the shell forms a seal with the laser system and the flexible skirt forms a seal with the eye. A vacuum is applied to the interior of the shell via a vacuum port on the laser system, and the vacuum is communicated to the space enclosed by the applanation lens, the skirt and the eye through the channels around the lens. A magnetic mechanism is also provided to hold the PI shell to the laser system.
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公开(公告)号：US11215814B2
公开(公告)日：2022-01-04
申请号：US16112507
申请日：2018-08-24
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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公开(公告)号：US10966864B2
公开(公告)日：2021-04-06
申请号：US15796610
申请日：2017-10-27
Applicant: AMO Development, LLC
Inventor： Jose L. Garcia , Roger W. Accurso , Daryl Wong , Zenon Witowski
IPC: A61F9/009
Abstract: Apparatus and method for interfacing an ophthalmic surgical laser system with a patient's eye using a single-piece patient interface (PI). The PI includes a hollow shell, with an applanation lens and a flexible skirt at its lower end. Through channels are formed around the applanation lens to connect the spaces above and below the lens. When the PI is coupled to the laser system and the eye, the upper rim of the shell forms a seal with the laser system and the flexible skirt forms a seal with the eye. A vacuum is applied to the interior of the shell via a vacuum port on the laser system, and the vacuum is communicated to the space enclosed by the applanation lens, the skirt and the eye through the channels around the lens. A magnetic mechanism is also provided to hold the PI shell to the laser system.
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19.发明申请公开(公告)号：US20210015668A1
公开(公告)日：2021-01-21
申请号：US17062452
申请日：2020-10-02
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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20.发明申请公开(公告)号：US20200064622A1
公开(公告)日：2020-02-27
申请号：US16112507
申请日：2018-08-24
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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