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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 864. Отображено 100.
04-04-2013 дата публикации

DEVICE AND METHOD FOR CONTROLLING A LASER SYSTEM

Номер: US20130085480A1
Автор: Dick Manfred, Grebner Dieter, Reich Matthias
Принадлежит: CARL ZEISS MEDITEC AG

A device and a method for controlling a laser system for the treatment of the eye lens by means of laser-induced disruptions. The laser system includes a femtosecond laser and a deflection unit for directing the laser beam and a detection device for detecting a value characteristic of the occurrence of disruptions being provided. The detection device is connected to the control device and the control device is adapted to determine a pulse energy for the laser system from the characteristic value and to actuate the laser accordingly. 111-. (canceled)12. A device for controlling a laser system for treating a crystalline lens using laser-induced disruptions , wherein the laser system comprises a femtosecond laser and a deflection unit for guiding a laser beam produced by the femtosecond laser , comprising:a detection device that determines a characteristic variable that is characteristic for the occurrence of disruptions; anda control device;wherein the detection device is operably connected to the control device and the control device determines a pulse energy for the laser system from the characteristic variable and controls the laser accordingly.13. The device according to claim 12 , wherein the characteristic variable is a variable selected from the group consisting of scattering claim 12 , absorption claim 12 , and tissue hardness.14. The device according to claim 12 , wherein the characteristic variable is detected three-dimensionally and the control device takes said three-dimensionality into account.15. The device according to claim 12 , wherein the characteristic variable is detected prior to or during the treatment.16. A method for controlling a laser system for treating the crystalline lens using laser-induced disruptions claim 12 , wherein the laser system comprises a femtosecond laser claim 12 , the method comprising:detecting at least one variable characteristic for the occurrence of disruptions;adjusting pulse energy and/or spot distance of the laser ...

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Номер записи: 1
25-04-2013 дата публикации

Patient interface for ophthalmologic diagnostic and interventional procedures

Номер: US20130103014A1
Автор: Michael Wiltberger, Philip Gooding
Принадлежит: Optimedica Corp

An ophthalmic system may comprise an imaging device having a field of view oriented toward the eye of the patient; a patient interface housing defining a passage therethrough, having a distal end coupled to one or more seals configured to be directly engaged with one or more surfaces of the eye of the patient, and wherein the proximal end is configured to be coupled to the patient workstation such that at least a portion of the field of view of the imaging device passes through the passage; and two or more registration fiducials coupled to the patient interface housing in a predetermined geometric configuration relative to the patient interface housing within the field of view of the imaging device such that they may be imaged by the imaging device in reference to predetermined geometric markers on the eye of the patient which may also be imaged by the imaging device.

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Номер записи: 2
07-11-2013 дата публикации

DEVICE FOR LASER-AIDED EYE SURGERY

Номер: US20130296834A1
Автор: Donitzky Christof, Krause Johannes, Wellhõfer Armin
Принадлежит: WaveLight GmbH

A device for laser-aided eye surgery comprising a patient table, as well as at least one laser system with a laser treatment head for emission of a focused laser beam onto an eye of a patient to be treated on the table. The laser system comprises an operation microscope with a viewing beam path running collinear to the laser beam path at least in the area of the emission location of the laser beam. According to the invention, the device is characterized by at least a first camera to create an image at least comprising the area from the mouth to the forehead of a patient lying on a table, as well as by a display device to display the picture taken. As an alternative to, or in addition to, the first camera and the display device, the eye-surgery device can comprise a laser projector for projection of a laser light pattern onto the patient's body as well as a guiding computer controlling the projector with an image signal output to which an image signal input of the projector is attached. 1. Device for laser-aided eye surgery , comprising a patient table as well as at least one laser system with a laser treatment head for emission of a focused laser output onto an eye to be treated of a patient on the table , wherein the laser system comprises an operation microscope with a viewing beam path running collinear to the laser beam path at least in the area of the emission location of the laser output , characterized by at least a first camera to create an image at least comprising the area from the mouth to the forehead of a patient lying on a table , as well as by a display device to display the picture taken.2. Device according to claim 1 , wherein the display device comprises a screen for displaying the picture taken.3. Device according to claim 1 , wherein the display device is configured for collimation of the picture taken in the viewing beam path of the operation microscope.4. Device according to claim 1 , wherein the first camera exhibits a minimum viewing angle of ...

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Номер записи: 3
19-12-2013 дата публикации

OPHTHALMIC LASER SURGICAL APPARATUS

Номер: US20130338649A1
Автор: HANEBUCHI Masaaki, Tanaka Masaki
Принадлежит: NIDEK CO., LTD.

An ophthalmic laser surgical apparatus includes: a laser irradiation optical system configured to irradiate a patient's eye with surgical laser; a fixation unit configured to fix the patient's eye on the laser irradiation optical system; an interface unit including an optical member configured to cover at least the cornea of the patient's eye; a tomography unit configured to capture a tomographic image of the anterior segment of the patient's eye; and a monitoring unit configured to monitor a position of the fixation unit and/or the interface unit with respect to the patient's eye based on the tomographic image captured by the tomography unit. 1. An ophthalmic laser surgical apparatus comprising:a laser irradiation optical system configured to irradiate a patient's eye with surgical laser;a fixation unit configured to fix the patient's eye on the laser irradiation optical system;an interface unit including an optical member configured to cover at least the cornea of the patient's eye;a tomography unit configured to capture a tomographic image of the anterior segment of the patient's eye; anda monitoring unit configured to monitor a position of the fixation unit and/or the interface unit with respect to the patient's eye based on the tomographic image captured by the tomography unit.2. The ophthalmic laser surgical apparatus according to claim 1 , whereinthe tomography unit is configured to include at least part of the fixation unit and/or the interface unit in a tomographic image to be captured, andthe monitoring unit includes a monitor configured to display at least part of the fixation unit and/or the interface unit, the part having been captured by the tomography unit, to graphically indicate the position of the patient's eye and the position of the fixation unit and/or the interface unit.3. The ophthalmic laser surgical apparatus according to claim 2 , further comprising a display control unit configured to control display of the monitor.4. The ophthalmic laser ...

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Номер записи: 4
13-02-2014 дата публикации

Laser-Assisted Thermal Separation of Tissue

Номер: US20140046310A1
Автор: David H. Mordaunt
Принадлежит: EOS Holdings LLC

A laser-assisted method for fully or partially separating tissue such as collagen-containing tissue is provided. In one embodiment, the method pertains to a capsolurorhexis whereby the laser-assisted method is applied to the lens capsule. A light-absorbing agent is added into or onto the tissue. A light beam with a wavelength capable of being absorbed by the light absorbing agent is then directed at the tissue to cause a thermal effect at the tissue following a predetermined closed curve with the goal to avoid irregularity- or potential tears in the resulting rim of the tissue.

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Номер записи: 5
10-04-2014 дата публикации

Ophthalmological device

Номер: US20140098347A1
Автор: Christian Rathjen
Принадлежит: Individual

An ophthalmological device ( 1 ) comprises an optical transmission system ( 5 ) for transmitting femtosecond laser pulses to a projection objective ( 3 ) for projecting the femto-second laser pulses onto or into eye ( 2 ) tissue. The ophthalmological device ( 1 ) further comprises an objective changing device ( 4 ) for changing and connecting the projection objective ( 3 ) to the optical transmission system ( 5 ). The objective changing device ( 4 ) comprises more than one different projection objectives ( 3 ) connected mechanically with each other, and the objective changing device ( 4 ) is configured to convey one of to the projection objectives ( 3 ) to the optical transmission system ( 5 ) for connecting the respective projection objective ( 3 ) to the optical transmission system ( 5 ). The objective changing device ( 4 ) makes it possible to adapt the laser-based ophthalmological device ( 1 ) for new applications without the need for extensive reconfigurations and/or costly vario-lense objectives.

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Номер записи: 6
07-01-2021 дата публикации

COMPACT ULTRA-SHORT PULSED LASER EYE SURGERY WORKSTATION

Номер: US20210000649A1
Автор: Fu Hong, Moore Bryant M., Vice Charles
Принадлежит:

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. 1. An ophthalmic surgical laser system comprising:a laser delivery system configured to deliver a pulsed laser beam at a focal point of a target in a patient's eye, the pulsed laser beam having a pulse repetition rate in the range between 5 MHz and 25 MHz;a resonant optical scanner, the scanner oscillating at a frequency between 200 Hz and 21000 Hz.an xy-scan device configured to move the pulsed laser beam in a lateral direction;a z-scan device configured to modify a depth of focus of the pulsed laser beam; anda controller operably coupled with the laser delivery system, the xy-scan device and the z-scan device, the controller configured to direct the laser delivery system to output the pulsed laser beam in a desired pattern at the focal point of the target in the eye so as to modify the target.228-. (canceled)29. An interface for coupling a patient's eye to an ophthalmic surgical laser system , the interface comprising: an apex ring coupled to the first plane surface, the apex ring comprising a distal end;', "a first receptacle configured to receive an attachment ring, the attachment ring ...

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Номер записи: 7
07-01-2016 дата публикации

LASER-ASSISTED THERMAL SEPARATION OF TISSUE

Номер: US20160000603A1
Автор: Mordaunt David H.
Принадлежит:

A laser-assisted method for fully or partially separating tissue such as collagen containing tissue is provided. In one embodiment, the method pertains to a capsulorhexis whereby the laser-assisted method is applied to the lens capsule. A light-absorbing agent is added into or onto the tissue. A light beam with a wavelength capable of being absorbed by the light absorbing agent is then directed at the tissue to cause a thermal effect at the tissue following a predetermined closed curve with the goal to avoid irregularity or potential tears in the resulting rim of the tissue. 1. A device for thermally separating tissue in the anterior lens capsule of an eye in a procedure creating an opening in the anterior lens capsule , the device comprising:a laser device programmed to direct a laser beam along a predetermined closed curve on the anterior lens capsule;wherein the laser beam power, wavelength, and diameter at the anterior lens capsule are selected such that the laser beam is absorbed by a light absorbing agent in or on the anterior lens capsule to locally heat the anterior lens capsule along the closed curve without ablation of the anterior lens capsule, thereby separating the anterior lens capsule along the closed curve to form an area of anterior lens capsule tissue inside the closed curve and an area of anterior lens capsule tissue outside the closed curve, the lens capsule tissue outside the closed curve defining the boundary of the opening in the anterior lens capsule;wherein the laser device is programmed to direct the laser beam in a single pass starting at an initial point interior to the closed curve, then along the closed curve, and then to a final point interior to the closed curve;wherein the laser beam diameter at the anterior lens capsule is 50 microns to 600 microns;wherein the laser beam power at the anterior lens capsule is less than or equal to 1000 mW;wherein the laser beam is directed along the closed curve at less than or equal to 10 ...

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Номер записи: 8
07-01-2016 дата публикации

PRESBYOPIC VISION CORRECTION WITH CONTROLLED 3-D PATTERNED MECHANICAL WEAKENING OF SCLERAL TISSUE

Номер: US20160000605A1
Автор: Grant Robert E., Mordaunt David H.
Принадлежит:

Treatments to improve ocular conditions such as presbyopia are provided. Structural (mechanical) weakening of the sclera is accomplished through the formation of a 3-D pattern of laser foci in the sclera resulting in an increase in the range of ocular accommodation. 1. A method of structurally weakening the sclera in an eye to improve a presbyopia condition of the eye , the method comprising:using a pulsed laser system to generate a three-dimensional (3-D) pattern of focused laser pulses in the sclera, the laser pulses passing noninvasively through a conjunctiva layer in the eye to a plurality of foci in the sclera to structurally weaken the sclera at the foci, thereby producing a 3-D pattern of structurally weakened regions in the sclera that increases the eye's range of ocular accommodation and improves the presbyopia condition;wherein each of the structurally weakened regions in the sclera has a 3-D ellipsoidal shape.2. The method as set forth in claim 1 , wherein the 3-D pattern of structurally weakened regions in the sclera elongates the sclera.3. The method as set forth in claim 1 , wherein the 3-D pattern of structurally weakened regions in the sclera increases the elasticity of the sclera.4. The method as set forth in claim 1 , wherein each of the 3-D ellipsoidal shapes has a minor axis of 6 micrometers to 50 micrometers and a major axis of 50 micrometers to 300 micrometers.5. The method as set forth in claim 1 , wherein each of the focused laser pulses has a pulse-width of 1 femtosecond to 500 picoseconds and a suitable peak power to ensure structural weakening of the sclera.6. The method as set forth in claim 1 , wherein each of the focused laser pulses has a pulse-width of 1 femtosecond to 500 picoseconds and a peak power in a range of 10 kW to 60 kW.7. The method as set forth in claim 1 , wherein each of the focused laser pulses has a pulse-width of 1 femtosecond to 10 nanoseconds and a suitable peak power to ensure structural weakening of the sclera.8. ...

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Номер записи: 9
04-01-2018 дата публикации

PATIENT INTERFACE FOR OPHTHALMOLOGIC DIAGNOSTIC AND INTERVENTIONAL PROCEDURES

Номер: US20180000646A1
Автор: Beltran Christine, Gooding Phillip, Talamo Jonathan, Wiltberger Michael
Принадлежит:

An ophthalmic system may comprise an imaging device having a field of view oriented toward the eye of the patient; a patient interface housing defining a passage therethrough, having a distal end coupled to one or more seals configured to be directly engaged with one or more surfaces of the eye of the patient, and wherein the proximal end is configured to be coupled to the patient workstation such that at least a portion of the field of view of the imaging device passes through the passage; and two or more registration fiducials coupled to the patient interface housing in a predetermined geometric configuration relative to the patient interface housing within the field of view of the imaging device such that they may be imaged by the imaging device in reference to predetermined geometric markers on the eye of the patient which may also be imaged by the imaging device. 127.-. (canceled)28. A system for ophthalmic intervention on an eye of a patient having temporary geometric markers thereon indicative of the orientation of an astigmatic axis of the patient's eye , comprising:a. an imaging device having a field of view oriented toward the eye of the patient, the imaging device configured for generating 3-dimensional images of the field of view;b. a patient interface housing having proximal and distal ends and defining a passage therethrough, wherein the distal end is coupled to one or more seals around a periphery of the passage configured to be directly engaged with an exterior surface of the eye of the patient and having a size sufficient to render visible the temporary geometric markers on the eye in that the temporary geometric markers are within the field of view of the imaging device, and wherein the proximal end is configured to be coupled to the patient workstation such that at least a portion of the field of view of the imaging device passes through the passage;c. three or more registration fiducials formed on an inner annulus of the patient interface housing ...

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Номер записи: 10
01-01-2015 дата публикации

Ophthalmological Laser Treatment Device

Номер: US20150005752A1
Автор: Bischoff Mark, Stobrawa Gregor
Принадлежит:

An evaluating unit which is adapted to determine a degree of an instantaneous overlap between an optical zone of the eye and the structure, or at least a part of the structure effecting refractive correction, based on a recorded image. By determining the degree of overlap between the instantaneous optical zone and the structure to be introduced, it is possible to control the superposition of the optical zone with the tissue volume which is specifically altered by means of the laser cutting and, accordingly, to enable a maximum coverage. 1. An ophthalmological laser treatment device comprising:a femtosecond laser configured to introduce energy into a portion of an eye of a patient according to a predetermined surgical structure;a light source configured to illuminate at least the portion of the eye;a detection device configured to record an image of at least the portion of the eye;an evaluating unit which is configured to determine a degree of an instantaneous overlap between an optical zone of the eye and the predetermined surgical structure or at least a part of the predetermined surgical structure effecting refractive correction based on a recorded image; anda contact element for mechanically fixating the eye.2. The ophthalmological treatment device according to ;wherein the evaluating unit is configured to determine an area of a pupil based on the recorded image and an area of the predetermined surgical structure, or at least of the part of the predetermined surgical structure effecting refractive correction, and an intersection between the two areas.3. The ophthalmological treatment device according to ;wherein the evaluating unit is configured to identify and locate a characteristic of the eye in the recorded image and to determine a relative offset between a point of the characteristic and a point of the predetermined surgical structure.4. The ophthalmological treatment device according to ;wherein the evaluating unit displays the recorded image visually in ...

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Номер записи: 11
12-01-2017 дата публикации

IMAGE PROCESSING METHOD AND SYSTEM FOR EDGE DETECTION AND LASER EYE SURGERY SYSTEM INCORPORATING THE SAME

Номер: US20170007112A1
Автор: Gonzalez Javier
Принадлежит:

A method of imaging an object includes obtaining an image data set from a raster scan. The image data set has a plurality of data points, each data point having an associated location and intensity; generating a reduced data set by selectively removing one or more data points from the image data set based upon an assigned probability of retaining the one or more data points in the data set, the assigned probability being a function of the intensity of a data point; generating a triangulation graph as a planar subdivision having faces that are triangles, the vertices of which are the data points and the edges of which are adjacent vertices; and segmenting the triangulated data set by finding a path with lowest cost between that vertex and every other vertex, wherein the cost is a function of the respective intensity of the vertices. 1. A method of imaging an object comprising:obtaining an image data set from a raster scan of the object, the image data set comprising a plurality of data points, each data point having a location and intensity associated with it;generating a reduced data set by selectively removing one or more data points from the image data set based upon an assigned probability of retaining the one or more data points in the data set, the assigned probability being a function of the intensity of a data point;generating a triangulation graph of the reduced data as a planar subdivision having faces that are triangles, the vertices of which are the data points of the reduced data set and the edges of which are adjacent vertices; andsegmenting the triangulation graph by finding a path with lowest cost between vertices of the triangulation graph, wherein the cost between vertices is a function of the respective intensity of the vertices.2. The method of claim 1 , wherein the object is a human eye.3. The method of claim 1 , wherein the raster scan is conducted by scanning a pulsed laser along the object to be imaged and detecting backreflected light from ...

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Номер записи: 12
12-01-2017 дата публикации

Ophthalmological apparatus for the breakdown of eye tissue

Номер: US20170007448A1
Автор: Christian Rathjen
Принадлежит: SIE Surgical Instrument Engineering AG

An ophthalmological apparatus includes a handle for manually holding and applying the ophthalmological apparatus, fastening abilities for fixing the ophthalmological apparatus at an eye, a light source, and a light projector for the focused projection of light pulses for punctiform tissue breakdown at a focal point in the interior of the eye tissue. The ophthalmological apparatus also includes a movement driver for moving the light projector. The movement of the light projector and therefore that of the focal point with the assistance of the movement driver permits a dimensioning of the optical projection system of the light projector which is substantially smaller than in the case of an ophthalmological apparatus where the focal point is moved exclusively by an optical projection system.

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Номер записи: 13
14-01-2021 дата публикации

CREATION OF CURVED CUTS IN THE INSIDE OF THE EYE CORNEA

Номер: US20210007892A1
Автор: Bischoff Mark, Stobrawa Gregor
Принадлежит:

A device for isolating a lenticle in the cornea of an eye. The device includes: a laser beam source to emit pulsed laser radiation having a pulse frequency of 1.2 MHz to 10 MHz, a pulse energy of 1 nJ to 200 nJ and a wavelength penetrating the cornea; a beam-forming unit having beam optics with an image field and that bundles pulsed laser radiation into a focus located inside the image field, and which has a maximum diameter of less than 3 μm; a beam-deflection unit shifting the focus in the cornea and inside the image field, the focus moving along a path when the image field is resting; and a control unit to control the source and the beam-forming unit to isolate the lenticle by specifying the path. The lenticle is delimited by a cut surface which is curved with regard to a front surface of the cornea. 1. A device for generating a cut in the interior of an eye , the device comprising:a laser beam source that is designed to emit a raw train of laser radiation pulses having a raw pulse frequency of at least 1.2 MHz and a wavelength which penetrates a cornea of the eye, wherein each laser radiation pulse of the raw train is adapted to separate layers of material within the eye;a pulse picker which selects some laser radiation pulses of the raw train to provide a modified train of laser radiation pulses adapted to separate layers of material within the eye, the modified train having a pulse frequency reduced over the raw pulse frequency;beam optics which bundle the laser radiation pulses into a focus located in the eye, anda beam scanner which shifts the focus in the eye along a path to generate the cut by the modified train of laser radiation pulses emitted while the focus is shifted along the path; anda processor, which is connected with the beam scanner and the pulse picker and is designed to control the beam scanner by specifying the path and thus defining location and extension of the cut.2. The device according to claim 1 , wherein the raw pulse frequency is not ...

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Номер записи: 14
11-01-2018 дата публикации

Machine-readable medium, keratotomy system, and keratotomy method

Номер: US20180008465A1
Автор: In Kyung Park, Jin A PARK, Jin Young Park, Kee Cheol Park, Ki Sung Park
Принадлежит: Individual

A corneal ablation system for correcting vision by using a laser is provided. The corneal ablation system includes: an operation device for creating an integrated corneal ablation plan for correcting a shape and a curvature error of a cornea based on corneal status data; a laser control unit for controlling a laser module according to an ablation position and an ablation shape of the cornea based on the integrated corneal ablation plan transmitted from the operation device; and the laser module for generating a laser and transmitting the laser to an optical unit under control of the laser control unit.

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Номер записи: 15
11-01-2018 дата публикации

ASPHERICAL MIRROR FOR FOCUSING LASER BEAM IN LINEAR PATTERN AND LASER SURGERY DEVICE EQUIPPED WITH SAME

Номер: US20180011288A1
Автор: BAEK Seung-Kuk, CHOI Won-Shik, LEE Jung Joo, MOON Jung-Ho
Принадлежит: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

According to an embodiment of the present invention, there is provided an aspherical mirror for focusing a laser beam in a linear pattern, the aspherical mirror including: a convex surface diffusely reflecting an irradiated laser beam; and a concave surface reflecting the laser beam such that the laser beam is focused at one point, wherein the laser beam reflected from the convex surface forms a long line beam as an angle of reflection with respect to a curvature of the convex surface changes, and the laser beam reflected from the concave surface is focused at one point on the line beam as an angle of reflection with respect to a curvature of the concave surface changes. 1. An aspherical mirror for focusing a laser beam in a linear pattern , the aspherical mirror comprising:a convex surface diffusely reflecting an irradiated laser beam; anda concave surface reflecting the laser beam such that the laser beam is focused at one point, whereinthe laser beam reflected from the convex surface forms a long line beam as an angle of reflection with respect to a curvature of the convex surface changes, andthe laser beam reflected from the concave surface is focused at one point on the line beam as an angle of reflection with respect to a curvature of the concave surface changes.2. The aspherical mirror of claim 1 , whereinthe aspherical mirror has a saddle-shaped structure with a curved cross section.3. A laser surgery device equipped with an aspherical mirror claim 1 , the laser surgery device comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the aspherical mirror of ;'}a tissue gripper being equipped with the aspherical mirror, and having a joint structure configured to grip and release a human body tissue; anda laser beam irradiator irradiating the laser beam onto the aspherical mirror by being connected to the tissue gripper, whereinthe laser beam is reflected along a curvature of the aspherical mirror to be in a line beam, and is irradiated onto the human ...

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Номер записи: 16
03-02-2022 дата публикации

VARYING A NUMERICAL APERTURE OF A LASER DURING LENS FRAGMENTATION IN CATARACT SURGERY

Номер: US20220031508A1
Автор: Campos Michael A., Dennison Anthony W., Fu Hong
Принадлежит:

Some embodiments disclosed here provide for a method fragmenting a cataractous lens of a patient's eye using an ultra-short pulsed laser. The method can include determining, within a lens of a patient's eye, a high NA zone where a cone angle of a laser beam with a high numerical aperture is not shadowed by the iris, and a low NA zone radially closer to the iris where the cone angle of the laser beam with a low numerical aperture is not shadowed by the iris. Laser lens fragmentation is accomplished by delivering the laser beam with the high numerical aperture to the high NA zone, and the laser beam with the low numerical aperture to the low NA zone. This can result in a more effective fragmentation of a nucleus of the lens without exposing the retina to radiation above safety standards. 18.-. (canceled)9. A laser eye surgery control system comprising:a controller comprising one or more physical processors; ["a first region of a lens of a patient's eye to receive a laser beam having a first numerical aperture; and", "a second region of the lens of the patient's eye to receive a laser beam having a second numerical aperture, the second numerical aperture being lower than the first numerical aperture, and wherein at any given depth within a depth range along a central axis of the patient's eye, the second region is radially closer, on average, to an iris of the patient's eye than the first region; and"], 'a fragmentation module configured to use the one or more physical processors to determine a laser lens fragmentation treatment plan by determining control the laser source to deliver the laser beam having the first numerical aperture and a first energy to the first region of the lens without delivering the laser beam having the first numerical aperture and the first energy to the second region of the lens; and', "control the laser source to deliver the laser beam having the second numerical aperture and a second energy to the second region of the lens, wherein at any ...

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Номер записи: 17
03-02-2022 дата публикации

Systems and Methods for Performing an Intraocular Procedure for Treating an Eye Condition

Номер: US20220031513A1
Автор: Enders Markus, Junger Johannes
Принадлежит:

The invention provides an excimer laser system including a means for calibrating laser output to compensate for increased variation in laser optical fibers. 114-. (canceled)15. A method for performing an intraocular procedure for treating an eye condition , said method comprising: the data is indicative of at least a diameter of a fiber optic core of the one of the plurality of excimer laser probes,', 'the excimer laser source is configured to generate laser energy to be provided to each of the plurality of excimer laser probes, and', 'the plurality of excimer laser probes are single use and disposable, such that the plurality of excimer laser probes are each coupleable, one at a time, to said excimer laser source; and, 'upon each instance of connecting one of a plurality of excimer laser probes to an excimer laser source, automatically receiving, by a processor in communication with the excimer laser source, data from the one of the plurality of excimer laser probes coupled to the excimer laser source, whereinautomatically fine tuning and adjusting, by the processor, laser energy output from the excimer laser source to the one of the plurality of excimer laser probes based on the diameter of the fiber optic core such that the laser energy output from the one of the plurality of excimer laser probes is maintained at a desired level.16. The method of claim 15 , further comprising analyzing claim 15 , by the processor. the data by correlating the data with calibration data stored in a database.17. The method of claim 16 , wherein the calibration data is associated with the laser energy output from the excimer laser source.18. The method of claim 16 , wherein the calibration data is stored in a local database.19. The method of claim 16 , wherein the calibration data is stored in a remote database.20. The method of claim 16 , further comprising determining claim 16 , by the processor claim 16 , the laser energy output based on the correlation of the data with the ...

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Номер записи: 18
17-01-2019 дата публикации

Apparatus for Working on Eye Tissue by Means of a Pulsed Laser Beam

Номер: US20190015250A1
Автор: Rathjen Christian
Принадлежит:

For the purposes of working on eye tissue, an ophthalmological apparatus comprises a laser source that is configured to produce a pulsed laser beam, a focusing optical unit that is configured to focus the pulsed laser beam into the eye tissue, and a scanner system for deflecting the pulsed laser beam onto work target points in the eye tissue. The scanner system is configured to guide the pulsed laser beam onto work target points along a scan line that extends across a work line at an alignment angle and to tilt the scan line depending on the work target point on the work line in such a way that the scan line extends substantially along an outer face of a lenticule to be cut in the eye tissue. 1. Ophthalmological apparatus for working on eye tissue , comprising a laser source that is configured to produce a pulsed laser beam; a focusing optical unit that is configured to focus the pulsed laser beam into the eye tissue; a scanner system , comprising a first scanner module and a second scanner module , for deflecting the pulsed laser beam onto work target points in the eye tissue; and a circuit for controlling the ophthalmological apparatus; whereinthe circuit is configured to control the second scanner module in such a way that the second scanner module guides the pulsed laser beam in a feed direction onto work target points along a work line that extends along an outer face of a lenticule to be cut in the eye tissue, transversely to meridians of the lenticule;the first scanner module is configured to guide the pulsed laser beam onto work target points along a scan line that extends across the work line at an alignment angle in a horizontal work plane, with a substantially higher scanning speed in comparison with the scanning speed of the second scanner module in the feed direction; andthe ophthalmological apparatus comprises a z-modulator that is configured to tilt the scan line out of the work plane depending on a specific work target point of the second scanner ...

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Номер записи: 19
17-01-2019 дата публикации

APPARATUS FOR WORKING ON EYE TISSUE BY MEANS OF A PULSED LASER BEAM

Номер: US20190015251A1
Автор: Rathjen Christian
Принадлежит:

For the purposes of working on eye tissue, an ophthalmological apparatus comprises a laser source that is configured to produce a pulsed laser beam, a focusing optical unit that is configured to focus the pulsed laser beam into the eye tissue, and a scanner system for deflecting the pulsed laser beam onto work target points in the eye tissue. A circuit controls the scanner system in such a way that the scanner system guides the pulsed laser beam into work trajectories that extend next to one another, in order, initially, to produce cut trajectories, separated by remaining tissue bridges, of a tissue cut to be undertaken in an area and in order, thereafter, to guide the pulsed laser beam in the remaining tissue bridges between the cut trajectories in order to complete the tissue cut. 1. Ophthalmological apparatus for working on eye tissue , comprising a laser source that is configured to produce a pulsed laser beam; a focusing optical unit that is configured to focus the pulsed laser beam into the eye tissue; a scanner system that is configured to guide the pulsed laser beam onto work target points in the eye tissue; and a circuit that is configured to control the scanner system in such a way that the scanner system guides the pulsed laser beam onto work target points in an area to be cut in a cornea , in work trajectories that extend next to one another , in order , initially , to produce cut trajectories , separated by remaining tissue bridges , of a tissue cut to be undertaken in the area and in order , thereafter , to guide the pulsed laser beam onto work target points in the remaining tissue bridges between the cut trajectories in the area in order to complete the tissue cut , wherein the ophthalmological apparatus comprises a measurement system that is configured to optically capture structures in the eye tissue; and the circuit is configured to control the measurement system in such a way that the measurement system captures the produced cut trajectories and ...

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Номер записи: 20
21-01-2021 дата публикации

SYSTEMS AND METHODS FOR HIGH SPEED MODULATION OF A RESONANT SCANNER IN OPHTHALMIC LASER APPLICATIONS

Номер: US20210015668A1
Автор: Fu Hong, Hill James E., Malek Tabrizi Alireza, Witowski Zenon
Принадлежит:

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. 111-. (canceled)12. A method for creating a lenticular incision using an ophthalmic surgical laser system , the method comprising the steps of:generating, with a laser, a pulsed laser beam to a target in a subject's eye; the pulsed laser beam having a pulse energy and pulse repetition rate;generating a scan line, the scan line having a scan width;controlling, via a controller, an XY-scan device and a Z-scan device to conduct a first sweep of the fast scan line in a first sweep direction;controlling, via the controller, the XY-scan device and the Z-scan device to conduct 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;wherein at least one of the pulse energy, the repetition rate, XY-scan speed, and the scan width are varied during at least one of the first sweep and second sweep so as to reduce the exposure of ophthalmic tissue in the overlap region to multiple exposures of laser pulses configured to modify ophthalmic tissue.13. The method of claim 12 , wherein the ophthalmic surgical laser system further ...

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Номер записи: 21
16-01-2020 дата публикации

SYSTEM AND METHOD FOR ANGLED OPTICAL ACCESS TO THE IRIDO-CORNEAL ANGLE OF THE EYE

Номер: US20200016000A1
Автор: Raksi Ferenc
Принадлежит:

A first optical subsystem includes a window with a refractive index nand an exit lens having a refractive index n. The exit lens is configured to couple to the window to define a first optical axis extending through the window and the exit lens. A second optical subsystem is configured to output a light beam. The light beam is directed to be incident at a convex surface of the exit lens along a second optical axis at an angle α that is offset from the first optical axis. The window is configured to detachably couple to the cornea of the eye such that the first optical axis is generally aligned with a direction of view of the eye. The respective refractive indices nand nare configured to direct the light beam incident at the convex surface of the exit lens through the cornea of the eye toward the irido-corneal angle. 1. An optical system for directing a light beam to an irido-corneal angle of an eye , the eye having a direction of view and a cornea with a refractive index n , the optical system comprising: [{'sub': 'w', 'a window formed of a material with a refractive index n, the window having a concave surface and a convex surface opposite the concave surface, and'}, {'sub': 'x', 'an exit lens formed of a material having a refractive index n, the exit lens having a concave surface and a convex surface opposite the concave surface, wherein the concave surface of the exit lens is configured to couple to the convex surface of the window to define a first optical axis extending through the window and the exit lens; and'}], 'a first optical subsystem comprisinga second optical subsystem configured to output a light beam, the light beam is directed to be incident at the convex surface of the exit lens along a second optical axis at an angle α that is offset from the first optical axis,', 'the concave surface of the window is configured to detachably couple to the cornea of the eye such that the first optical axis is generally aligned with the direction of view, and', {' ...

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Номер записи: 22
16-01-2020 дата публикации

INTEGRATED SURGICAL SYSTEM AND METHOD FOR TREATMENT IN THE IRIDO-CORNEAL ANGLE OF THE EYE

Номер: US20200016002A1
Автор: Raksi Ferenc
Принадлежит:

Intraocular pressure in an eye is reduced by delivering each of a high resolution optical coherence tomography (OCT) beam and a high resolution laser beam through the cornea, and the anterior chamber into the irido-corneal angle along an angled beam path. The OCT beam provides OCT imaging for diagnostic purposes and surgery planning and monitoring, while the laser beam is configured to modify tissue. A volume of ocular tissue within an outflow pathway in the irido-corneal angle is modified to reduce a pathway resistance present in one or more of the trabecular meshwork, the Schlemm's canal, and the one or more collector channels by applying the laser beam to ocular tissue defining the volume to thereby cause photo-disruptive interaction with the ocular tissue to reduce the pathway resistance or create a new outflow pathway. 1. A method of reducing intraocular pressure in an eye having a cornea , an anterior chamber , and an irido-corneal angle comprising an aqueous humor outflow pathway formed of a trabecular meshwork , a Schlemm's canal , and one or more collector channels branching from the Schlemm's canal , the method comprising:delivering each of an optical coherence tomography (OCT) beam and a laser beam through the cornea, and the anterior chamber into the irido-corneal angle; andmodifying a volume of ocular tissue within the outflow pathway to reduce a pathway resistance present in one or more of the trabecular meshwork, the Schlemm's canal, and the one or more collector channels by applying the laser beam to ocular tissue defining the volume to thereby cause photo-disruptive interaction with the ocular tissue to reduce the pathway resistance or create a new outflow pathway.2. The method of claim 1 , wherein delivering each of an OCT beam and a laser beam comprises directing each beam to a first optical subsystem comprising a window coupled to the cornea and an exit lens coupled to the window.3. The method of claim 2 , wherein:the eye comprises a direction of ...

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Номер записи: 23
28-01-2016 дата публикации

Creation of curved cuts in the inside of the eye cornea

Номер: US20160022494A1
Автор: Gregor Stobrawa, Mark Bischoff
Принадлежит: CARL ZEISS MEDITEC AG

A device for isolating a lenticle in the cornea of an eye. The device includes: a laser beam source to emit pulsed laser radiation having a pulse frequency of 1.2 MHz to 10 MHz, a pulse energy of 1 nJ to 200 nJ and a wavelength penetrating the cornea; a beam-forming unit having beam optics with an image field and that bundles pulsed laser radiation into a focus located inside the image field, and which has a maximum diameter of less than 3 μm; a beam-deflection unit shifting the focus in the cornea and inside the image field, the focus moving along a path when the image field is resting; and a control unit to control the source and the beam-forming unit to isolate the lenticle by specifying the path. The lenticle is delimited by a cut surface which is curved with regard to a front surface of the cornea.

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Номер записи: 24
25-01-2018 дата публикации

APPARATUS AND METHOD FOR ENHANCING CORNEAL LENTICULAR SURGERY WITH LASER REFRACTIVE INDEX CHANGES

Номер: US20180021172A1
Автор: Catlin Scott, Zheleznyak Leonard
Принадлежит:

Methods and systems wherein laser induced refractive index changes by focused femtosecond laser pulses in optical tissues is performed in combination with corneal lenticular surgery to achieve overall desired vision corrections. 1. A method for correcting vision in a patient comprising:(a) generating cut surfaces in a cornea of an eye in order to correct ametropia using an apparatus, said apparatus comprising: a first laser unit, which focuses first pulsed laser radiation into the cornea and moves said focused radiation therein in order to generate cut surfaces within the cornea; and a control unit, which controls the first laser unit for generating cut surfaces such that a predetermined lenticle to be removed is separated from the surrounding corneal material within the cornea by at least one cut surface; and(b) modifying the refractive index of ocular tissue of the eye, by irradiating select regions of the ocular tissue with a focused, visible or near-IR second laser below the optical breakdown threshold of the tissue to provide refractive structures that exhibit a change in refractive index, and exhibit little or no scattering loss, and scanning over the select regions with the second laser such that ablation or removal of the tissue is not observed in the irradiated region.2. The method of claim 1 , wherein the focused claim 1 , visible or near-IR second laser has a pulse energy from 0.01 nJ to 10 nJ.3. The method of claim 1 , wherein step (a) achieves relatively gross refractive corrective changes in the eye claim 1 , and step (b) achieves further refinement corrections.4. The method of claim 3 , further comprising performing wavefront aberrometry diagnostics between steps (a) and (b) to determine further refinements to sphere claim 3 , cylinder or higher order aberrations to be corrected in step (b).5. The method of claim 1 , wherein the first laser and the second laser are the same laser claim 1 , and wherein the laser power and/or fluence is controlled ...

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Номер записи: 25
10-02-2022 дата публикации

Method for controlling an eye surgical laser and treatment apparatus

Номер: US20220040001A1
Автор: Nico Triefenbach, Samuel Arba Mosquera
Принадлежит: Schwind Eye Tech Solutions GmbH

A method for controlling a surgical laser for the separation of a volume body, with predefined posterior and anterior interfaces, from a human or animal cornea is disclosed. The method including controlling the laser by means of a control device such that it emits pulsed laser pulses in a shot sequence into the cornea. The interfaces are generated by the generation of a plurality of cavitation bubbles generated by photodisruption by means of an interaction of the individual laser pulses with the cornea. A minimum diameter of the volume body orthogonal to an optical axis of the volume body is determined depending on at least one diopter value for the volume body and on a preset thickness of the volume body viewed in a direction of the optical axis. A treatment apparatus, a computer program product and a computer-readable storage medium are also disclosed.

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Номер записи: 26
24-01-2019 дата публикации

OPHTHALMIC TREATMENT APPARATUS AND BEAM CONTROL METHOD THEREFOR

Номер: US20190021903A1
Автор: AN Cheol San, Ha Tae Ho
Принадлежит:

The present invention relates to an ophthalmic treatment apparatus and to a beam control method therefor. The ophthalmic treatment apparatus according to the present invention comprises: a beam generating unit for generating beams having different pulse energies; a bubble sensing unit for sensing whether or not bubbles have been generated, as well as the amount of generated bubbles, on the basis of the pulse energy of the beam generated by the beam generating unit and radiated onto the treatment region of an eyeball; and a control unit for controlling the operation of the beam generating unit such that the pulse energy of the beam generated by the beam generating unit can be adjusted in accordance with the signal from the bubble sensing unit. 1a beam generation unit which generates beams having different types of pulse energy;a bubble detection unit which detects whether a bubble is generated or an amount of bubbles generated by the pulse energy of the beams generated by the beam generation unit and radiated to a treatment region of an eyeball; anda control unit which controls an operation of the beam generation unit based on a signal from the bubble detection unit so that the pulse energy of the beams generated by the beam generation unit is controlled.. An ophthalmic treatment apparatus, comprising: This application is a continuation of U.S. patent application Ser. No. 14/414,696, filed Jan. 13, 2015, now U.S. Pat. No. 10,080,683 issued Sep. 25, 2018, which is a U.S. National Stage Application of PCT/KR2013/006331 filed Jul. 15, 2013, which claims priority to Korean Patent Application 10-2012-0076779 filed Jul. 13, 2012, which are hereby incorporated by reference in their entirety.The present invention relates to an ophthalmic treatment apparatus and a method of controlling, by the ophthalmic treatment apparatus, beams and, more particularly, to an ophthalmic treatment apparatus for measuring pulse energy of a beam for treatment that is radiated to the treatment ...

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Номер записи: 27
24-01-2019 дата публикации

PRODUCING CUT SURFACES IN A TRANSPARENT MATERIAL BY MEANS OF OPTICAL RADIATION

Номер: US20190021905A1
Автор: Bischoff Mark, Papastathopoulos Evangelos, Stobrawa Gregor
Принадлежит:

A method for producing a cut surface in a transparent material using optical radiation. A laser device separates the material using optical radiation and includes an optical unit focussing the radiation along an optical axis into an image field defining an image-field size. A focal position is adjusted transversely along the axis, producing a cut surface extending substantially parallel to the axis and, in projection along the axis, is a curve having a maximum extent. The focus is displaced by adjustment of the focal position along a trajectory curve lying in the cut surface. The cut surface has a maximum extent which is greater than the image-field size. The focal position is moved transverse to the axis along the curve. The image field is displaced transversely, and the focal position is adjusted in an oscillating fashion along the axis on the curve between an upper and lower axial focus position. 1. A treatment apparatus for producing a cut in a transparent material , the apparatus comprising:a laser device which is adapted to generate a cut within the transparent material using optical radiation, the laser devicea control device which is connected to the laser device and controls the laser device such that a focus adjustment device moves the position of the focus of the optical radiation in the material along a path, wherein the control device controls the laser device such that the cut has, in projection along an optical axis, a form of a curve,2. A method for producing control data for producing a cut in a transparent material , whereinthe control data are designed for a laser device comprising: 'a focus adjustment device for moving a position of the focus,', 'optics configured to focus the optical radiation along an optical axis into a focus situated in the material and which have in the material an image field in which the focus lies and which has an image field size, and'}wherein the control data are produced to comprise data for the focus adjustment device ...

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Номер записи: 28
22-01-2015 дата публикации

Laser device and process for configuring such laser device

Номер: US20150025510A1
Автор: Christian Wuellner, Christof Donitzky, Klaus Vogler
Принадлежит: WaveLight GmbH

A process for configuring a laser device comprising: selecting a pulse length within a range from 1 ps to 1 ns; selecting a wavelength for the laser radiation within a range from 300 nm to 400 nm or within a range from 800 nm to 1100 nm; ascertaining a set of parameter values of the laser device that when the laser device is operated with these parameter values a two-dimensionally extensive separation of tissue of human corneal or lenticular tissue is achieved by stringing together local sites of damage, the set of parameter values including the selected pulse length, the selected wavelength, and values for at least one of the following parameters: a pulse energy, a pulse repetition rate, a fluence per radiation pulse, a number of pulses per site of damage, a scanning speed of a scanning apparatus of the laser device, and a focus diameter.

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Номер записи: 29
02-02-2017 дата публикации

Apparatus for patterned plasma-mediated laser ophthalmic surgery

Номер: US20170027747A1
Автор: Dan E. Andersen, Daniel V. Palanker, David H. Mordaunt, Mark S. Blumenkranz
Принадлежит: Optimedica Corp

A system for ophthalmic surgery on an eye includes: a pulsed laser which produces a treatment beam; an OCT imaging assembly capable of creating a continuous depth profile of the eye; an optical scanning system configured to position a focal zone of the treatment beam to a targeted location in three dimensions in one or more floaters in the posterior pole. The system also includes one or more controllers programmed to automatically scan tissues of the patient's eye with the imaging assembly; identify one or more boundaries of the one or more floaters based at least in part on the image data; iii. identify one or more treatment regions based upon the boundaries; and operate the optical scanning system with the pulsed laser to produce a treatment beam directed in a pattern based on the one or more treatment regions.

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Номер записи: 30
02-02-2017 дата публикации

METHOD AND APPARATUS FOR AUTOMATED PLACEMENT OF SCANNED LASER CAPSULORHEXIS INCISIONS

Номер: US20170027756A1
Автор: Angeley David G., Gooding Phillip H., Marcellino George R., Woodley Bruce
Принадлежит:

Systems and methods are described for cataract intervention. In one embodiment a system comprises a laser source configured to produce a treatment beam comprising a plurality of laser pulses; an integrated optical system comprising an imaging assembly operatively coupled to a treatment laser delivery assembly such that they share at least one common optical element, the integrated optical system being configured to acquire image information pertinent to one or more targeted tissue structures and direct the treatment beam in a 3-dimensional pattern to cause breakdown in at least one of the targeted tissue structures; and a controller operatively coupled to the laser source and integrated optical system, and configured to adjust the laser beam and treatment pattern based upon the image information, and distinguish two or more anatomical structures of the eye based at least in part upon a robust least squares fit analysis of the image information. 115-. (canceled)16. A system for cataract surgery on an eye of a patient , comprising:a. a laser source configured to produce a treatment beam comprising a plurality of laser pulses;b. an integrated optical system comprising an Optical Coherence Tomographer (OCT) coupled to a treatment laser delivery assembly such that the OCT and the treatment laser delivery assembly share at least one common optical element, the integrated optical system being configured to acquire image information pertinent to one or more targeted tissue structures and direct the treatment beam in a 3-dimensional pattern to cause breakdown in at least one of the targeted tissue structures;c. a patient support configured to maintain the eye of the patient within a range of the optical system; and 1) adjust the laser beam and treatment pattern based upon the image information,', '2) operate the OCT to perform one or more A-scans of at least one anatomical structure of the eye at each of a plurality of XY locations, thereby obtaining image information of a ...

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Номер записи: 31
24-04-2014 дата публикации

Optical system for a laser therapy instrument

Номер: US20140114295A1
Автор: Gregor Stobrawa, Mark Bischoff
Принадлежит: CARL ZEISS MEDITEC AG

An optical system for a laser therapy instrument for the application of laser radiation on and in the eye, includes a femtosecond laser, an objective. The objective or at least one lens or lens group of the objective is shiftable in the direction of the optical axis being intended for shifting of the focus position from the region of the cornea to the region of the crystalline lens and vice versa. The optical system may include at least two optical assemblies designed for the axial variation of the focus of the therapeutic laser radiation, with the focus variation range Δz differing between the individual assemblies and a changing device, designed for the insertion of any one of these assemblies into the therapeutic laser beam path at a time.

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Номер записи: 32
29-01-2015 дата публикации

Second pass femtosecond laser for incomplete laser full or partial thickness corneal incisions

Номер: US20150032091A1
Автор: E. Valaski Teuma, Gary Gray
Принадлежит: Lensar Inc

A method for forming an incision in an eye, the method including performing a first pass of a first laser beam along a path within an eye, wherein after completion of the first pass there exists a residual uncut layer at an anterior surface of a cornea of the eye. The method further including performing a second pass of a second laser beam only along a portion of the path that contains the residual uncut layer, wherein after completion of the second pass, the residual uncut layer is transformed into a full complete through surface incision.

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Номер записи: 33
31-01-2019 дата публикации

Controlling a laser surgical device with a sensation generator

Номер: US20190029882A1
Автор: Peter Martin
Принадлежит: NOVARTIS AG

In certain embodiments, a system for controlling a laser device comprises a laser device, a distance meter, a haptic sensation generator, and a computer. The laser device generates a laser beam with a focal point. The distance meter measures a distance between the focal point and a target of an eye of a patient. The haptic sensation generator generates an acoustic field that projects a sensory pattern onto a user. The computer: receives the distance from the distance meter; determines the pattern corresponding to the distance according to a function in which the distance is a variable; and instructs the haptic sensation generator to generate the acoustic field that projects the determined pattern.

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Номер записи: 34
31-01-2019 дата публикации

SCANNING DEVICE

Номер: US20190029883A1
Автор: Bischoff Mark, Gerlach Mario, Hanft Marco, Muehlhoff Dirk
Принадлежит:

A scanning device for focusing a beam of rays in defined regions of a defined volume, comprising an input optics wherein the beam of rays penetrates first, having at least one first optical element; a focusing optics for focusing the beam of rays exiting from the input optics; and a deflecting device arranged between the first optical element and the focusing optics, for deflecting the beam of rays after it has passed through the first optical element, based on a position of the focus to be adjusted in lateral direction. In order to adjust the position of the focus of the beam of rays in the direction of the beam of rays, and optical element of the input optics can be displaced relative to the deflecting device. 1. (canceled)2. A surgical laser system including a scanning device for focusing a luminous beam into a selected range of an eye to be treated , the surgical laser system comprising:a femtosecond surgical laser source that produces the luminous beam;entrance optics following the femtosecond surgical laser source into which the luminous beam first enters comprising at least a first optical element;focusing optics by which the luminous beam emitted from the entrance optics is focused on or into the eye to be treated;a deflecting device arranged between the first optical element and the focusing optics that diverts a focus position of the luminous beam;the deflecting device comprising a first movable reflective element movable about a first axis configured to deflect the luminous beam in an X direction and a second movable reflective element movable about a second axis that is substantially orthogonal to the first axis configured to deflect the luminous beam in a Y direction; anda beam splitter, located between the deflecting device and the focusing optics; and in which the entrance optics and focusing optics are chromatically corrected over a spectral range of selected femtosecond pulses.3. The surgical laser system including a scanning device as claimed in ...

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Номер записи: 35
30-01-2020 дата публикации

SWEEPING OPTICAL SCANNER OF AN APPARATUS FOR CUTTING-OUT A HUMAN OR ANIMAL TISSUE

Номер: US20200030145A1
Автор: BAUBEAU Emmanuel, BERNARD Aurelien, MAUCLAIR Cyril, Romano Fabrizio
Принадлежит:

The present invention relates to an apparatus for cutting-out including a device for treating a L.A.S.E.R. beam generated by a femtosecond laser (), and positioned downstream from said femtosecond laser, the treatment device comprising: 1. An apparatus for cutting-out a human or animal tissue , such as a cornea or a lens , said apparatus including a femtosecond laser capable of sending a L.A.S.E.R. beam in the form of pulses and a device for treating the L.A.S.E.R. beam generated by the femtosecond laser , the treatment device being positioned downstream from said femtosecond laser , a shaping system positioned on the trajectory of said beam, for modulating the phase of the wave front of the L.A.S.E.R. beam so as to obtain a phase-modulated L.A.S.E.R. single-beam according to a modulation set value calculated for distributing the energy of the L.A.S.E.R. beam in at least two impact points forming a pattern in its focal plane,', 'an optical focusing system downstream from the shaping system, the optical focusing system comprising a concentrator module for focusing the phase-modulated L.A.S.E.R. beam in a focusing plane and a depth-positioning module for displacing the focusing plane into a plurality of cutting-out planes,', 'a sweeping optical scanner positioned between the concentrator module and the depth-positioning module for displacing the pattern in the cutting-out plane in a plurality of positions., 'wherein the treatment device comprises2. The apparatus according to claim 1 , which further comprises a control unit of the optical scanner for controlling the displacement of the pattern along a displacement path comprising at least one segment in the cutting-out plane.3. The apparatus according to claim 2 , wherein the control unit is programmed for controlling the activation of the femtosecond laser such that the distance between two adjacent positions of the pattern along a segment of the displacement path is greater than or equal to the diameter of an impact ...

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Номер записи: 36
24-02-2022 дата публикации

Apparatus for patterned plasma-mediated laser ophthalmic surgery

Номер: US20220054308A1
Автор: Dan E. Andersen, Daniel V. Palanker, David H. Mordaunt, Mark S. Blumenkranz
Принадлежит: AMO DEVELOPMENT LLC

A system for ophthalmic surgery on an eye includes: a pulsed laser which produces a treatment beam; an OCT imaging assembly capable of creating a continuous depth profile of the eye; an optical scanning system configured to position a focal zone of the treatment beam to a targeted location in three dimensions in one or more floaters in the posterior pole. The system also includes one or more controllers programmed to automatically scan tissues of the patient's eye with the imaging assembly; identify one or more boundaries of the one or more floaters based at least in part on the image data; iii. identify one or more treatment regions based upon the boundaries; and operate the optical scanning system with the pulsed laser to produce a treatment beam directed in a pattern based on the one or more treatment regions.

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Номер записи: 37
06-02-2020 дата публикации

FULL DEPTH LASER OPHTHALMIC SURGICAL SYSTEM, METHODS OF CALIBRATING THE SURGICAL SYSTEM AND TREATMENT METHODS USING THE SAME

Номер: US20200038241A1
Автор: DEWEY David, Gooding Phillip, Schuele Georg, Vankov Alexander, Wang Jenny, Wang Tianheng, Wiltberger Michael
Принадлежит:

A full depth ophthalmic surgical system includes a femtosecond laser source and an optical coherence tomographer. The system is capable of performing surgical procedures along the entire length of the eye from the cornea to the retina. In one embodiment, the system uses a removeable focal point extension assembly to extend the reach of the focal point location of the laser beam to the vitreous humor of the eye. In another embodiment, the optical system of the ophthalmic surgical system is optimized to focus the laser beam and imaging light in the vitreous humor of the eye. For procedures performed posterior to the lens, a method for calibrating the full depth ophthalmic surgical system uses the focal zone of the optical coherence tomographer beam as a proxy for the focal zone of the femtosecond laser source to. The system can be used to perform treatment in the vitreous humor, including treating floaters and liquification of the vitreous humor. 1. A full depth ophthalmic surgical system for performing surgery on eyes of subjects , comprising:a femtosecond laser source configured to produce a pulsed laser beam;an imaging assembly comprising an optical coherence tomographer;a scanning assembly for deflecting the laser beam;a first patient interface device configured to engage an eye of a subject and configured to be removably connected to the scanning assembly, the first patient interface device having a first predefined optical power;a second patient interface device configured to engage an eye of a subject and configured to be removably connected to the scanning assembly, the second patient interface device having a second predefined optical power which is less positive or more negative than the first predefined optical power, the first patient interface and the second patient interface being alternatively connected to the scanning assembly; anda controller operably connected to the laser source, the imaging assembly and the scanning assembly and programmed to: ...

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Номер записи: 38
18-02-2016 дата публикации

Optical System With Movable Lens For Ophthalmic Surgical Laser

Номер: US20160045364A1
Автор: Ferenc Raksi, Jesse Buck
Принадлежит: Alcon Lensx Inc

An eye-surgical laser system includes a laser source, to generate a laser beam, an XY scanner, to scan a focal spot of a received laser beam in an XY direction essentially transverse to an optical axis of the laser system, and a lens group, disposed in the optical path between the laser source and the XY scanner, to receive the laser beam generated by the laser source, to precompensate an aberration of the laser beam, and to forward the precompensated laser beam to the XY scanner, the lens group having a movable lens, movable in a Z direction along an optical axis.

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Номер записи: 39
01-05-2014 дата публикации

Ophthalmic laser system

Номер: US20140121651A2
Автор: Dmitri Feklistov, Malcolm Plunkett
Принадлежит: Ellex Medical Pty Ltd

An ophthalmic laser system generating a first beam at a wavelength suitable for performing selective laser trabeculoplasty and selectively generating a second beam at a wavelength suitable for performing secondary cataract surgery procedures. The laser system is able to select between directing the first beam or the second beam to the eye of a patient. The first beam is suitably generated at 1064 nm from a Nd:YAG laser and the second beam is frequency doubled to 532 nm in a KTP doubling crystal.

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Номер записи: 40
03-03-2022 дата публикации

POSTERIOR CORNEAL SURFACE MAPPING AND DEEP LAMELLAR CORNEAL INCISION PARALLEL TO POSTERIOR CORNEAL SURFACE

Номер: US20220062049A1
Автор: Altmann Griffith, Fu Hong, Malek Tabrizi Alireza, Rahaman Mohammad Saidur, Witowski Zenon
Принадлежит:

A method for forming deep corneal lamellar incision parallel to the posterior corneal surface when the eye is docked to the patient interface. A lower-energy detecting beam generated by the same pulsed laser that generates the higher-energy treatment laser beam is utilized to measure the posterior corneal surface profile. The detecting beam is scanned in the eye according to a first 3-dimensional scan pattern, while intensity of the back-reflected light is measured by a light intensity detector. The first scan pattern may be a spiral pattern in the X-Y plane coupled with a Z direction oscillation function. Peaks of the light intensity signal are detected, and corresponding spatial positions of the focus point are obtained; a known offset distance is added to the depth value to obtain the posterior corneal surface profile. Based thereon, the treatment laser beam is scanned in the eye to form the deep corneal lamellar incision.

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Номер записи: 41
25-02-2021 дата публикации

Apparatus for Working on Eye Tissue By Means of a Pulsed Laser Beam

Номер: US20210052420A1
Автор: Rathjen Christian
Принадлежит:

For the purposes of working on eye tissue, an ophthalmological apparatus comprises a laser source that is configured to produce a pulsed laser beam, a focusing optical unit that is configured to focus the pulsed laser beam into the eye tissue, and a scanner system for deflecting the pulsed laser beam onto work target points in the eye tissue. A circuit controls the scanner system in such a way that the scanner system guides the pulsed laser beam into work trajectories that extend next to one another, in order, initially, to produce cut trajectories, separated by remaining tissue bridges, of a tissue cut to be undertaken in an area and in order, thereafter, to guide the pulsed laser beam in the remaining tissue bridges between the cut trajectories in order to complete the tissue cut. 1. Ophthalmological apparatus for working on eye tissue , comprising:a laser source configured to produce a pulsed laser beam;a focusing optical unit configured to focus the pulsed laser beam into the eye tissue; anda scanner system configured to guide the pulsed laser beam onto work target points in the eye tissue;wherein the ophthalmological apparatus further comprises a circuit configured to control the scanner system in such a way that the scanner system guides the pulsed laser beam onto work target points in an area to be cut in a cornea, in work trajectories that extend next to one another, in order, initially, to produce cut trajectories, separated by remaining tissue bridges, of a tissue cut to be produced in the area and in order, thereafter, to guide the pulsed laser beam onto work target points in the remaining tissue bridges between the cut trajectories in the area in order to complete the tissue cut.2. Ophthalmological apparatus according to claim 1 , wherein the circuit is configured to control the scanner system in such a way that the scanner system guides the pulsed laser beam with overlapping laser pulse spots onto successive work target points.3. Ophthalmological ...

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Номер записи: 42
21-02-2019 дата публикации

AUTOMATED CALIBRATION OF LASER SYSTEM AND TOMOGRAPHY SYSTEM WITH FLUORESCENT IMAGING OF SCAN PATTERN

Номер: US20190053947A1
Автор: Hart John Scot, Schuele Georg, Simoneau Michael
Принадлежит:

A laser system calibration method and system are provided. In some methods, a calibration plate may be used to calibrate a video camera of the laser system. The video camera pixel locations may be mapped to the physical space. A xy-scan device of the laser system may be calibrated by defining control parameters for actuating components of the xy-scan device to scan a beam to a series of locations. Optionally, the beam may be scanned to a series of locations on a fluorescent plate. The video camera may be used to capture reflected light from the fluorescent plate. The xy-scan device may then be calibrated by mapping the xy-scan device control parameters to physical locations. A desired z-depth focus may be determined by defining control parameters for focusing a beam to different depths. The video camera or a confocal detector may be used to detect the scanned depths. 111-. (canceled)12. A laser system , comprising:an electromagnetic radiation beam source configured to output a beam along a beam path toward a treatment space;a scanning system disposed along the beam path, the scanning system configured to direct the outputted beam to a plurality of locations in the treatment space;a camera capturing images of the treatment space; anda processor coupled with the scanning system and the camera, the processor configured to calibrate the scanning system by:scanning the electromagnetic radiation beam of the laser system orthogonally to a propagation direction of the electromagnetic radiation beam between a series of scanning locations of a fluorescent material disposed in the treatment space using the scanning system;capturing, using the camera, an emitted light from the series of locations of the fluorescent material in response to the scanned electromagnetic radiation beam; andcalibrating the scanning system with the treatment space per the camera captured series of locations.13. The laser system of claim 12 , wherein the camera comprises a sensor having an array of ...

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Номер записи: 43
02-03-2017 дата публикации

FREE FLOATING PATIENT INTERFACE FOR LASER SURGERY SYSTEM

Номер: US20170056243A1
Автор: Angeley David, Gooding Phillip H., Schuele Georg, WANG Zhao
Принадлежит:

Systems and methods here may be used to support a femtosecond laser eye surgery system including utilizing a floating head and/or patient support to maintain alignment of the system with a patient using feedback loops of force sensors in a patient interface. In some examples, the floating head and/or patient support may counteract movements detected in the force sensors. In some example embodiments, a ranging subsystem may detect and compensate for different arrangements of the floating head assembly using a ranging sample beam. 1. A system to account for patient movement during laser eye surgery , comprising:a femtosecond laser source configured to produce a treatment beam that includes a plurality of laser pulses; 'wherein the patient interface includes at least three piezoelectric force sensors in communication with a computer subsystem;', 'an integrated optical scanning assembly configured to receive the treatment beam, direct the treatment beam through a patient interface to selected treatment locations within the eye so as to incise tissue at selected treatment locations,'} 'wherein the three axis motorized bearing assemblies are in communication with the computer subsystem and are configured to move the floating base assembly to counteract patient movement as detected by the force sensors; and', 'a floating base assembly including three axis motorized bearing assemblies, the integrated optical scanning assembly being mounted to the floating base assembly;'}a three axis motorized chair assembly in communication with the computer subsystem, the three axis motorized chair assembly configured to move the chair assembly to counteract patient movement as detected by the force sensors.2. The system of wherein the at least three force sensors are arranged in an annular fashion on the patient interface.3. The system of wherein the floating base bearing assemblies are roller and rail bearings claim 1 , andwherein a vertical spring is included as a pair of coiled metal ...

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Номер записи: 44
02-03-2017 дата публикации

DEVICE FOR MACHINING AN OBJECT BY APPLICATION OF LASER RADIATION

Номер: US20170056244A1
Автор: EBERT Elke, Gerlach Mario, Hanft Marco, Muehlhoff Dirk
Принадлежит:

A device for machining an object by laser radiation, by photodisruption. The device includes an observation device for imaging the object and a laser scanning device by which the laser radiation is passed over a predetermined sector of the object for scanning the sector. The device includes the observation device with a first lens for imaging the object; the laser scanning device with a second lens, through which the laser radiation is guided, in which both lenses with regard to the dimension of the regions to be produced in the images and/or with regard to their focal intercept are different from each other. The device alternately images the respective region of the object in a first operating mode by the first lens and in a second operating mode by the second lens. It is thus possible to use in both operating modes a lens adapted to the intended imaging purpose. 1. (canceled)2. A device for treating an eye using laser radiation , comprising:an observation device having a first objective lens that images the eye, the first objective lens being configured to image the eye along a first optical path;a treatment laser source that emits the laser radiation in femtosecond laser pulses that create photodisruption in tissues of the eye;a laser scan device including a second objective lens that images the eye and through which the laser radiation is guided so as to scan through a sector within the eye that is intended to be treated; the second objective lens being configured to image the eye along a second optical path;wherein the first objective lens and the second objective lens are different from each other in a size of a segment presented for observation in the images and/or in terms of their focal intercept;further wherein, either, the eye is supported to be shiftable between a first eye position in which the eye is imaged along the first optical path and a second eye position wherein the eye is imaged along the second optical path or the first objective lens and the ...

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Номер записи: 45
15-05-2014 дата публикации

OPHTHALMIC LASER SYSTEM

Номер: US20140135753A1
Автор: Feklistov Dmitri, Plunkett Malcolm
Принадлежит: Ellex Medical Pty Ltd

An ophthalmic laser system generating a first beam at a wavelength suitable for performing selective laser trabeculoplasty and selectively generating a second beam at a wavelength suitable for performing secondary cataract surgery procedures. The laser system is able to select between directing the first beam or the second beam to the eye of a patient. The first beam is suitably generated at 1064 nm from a Nd:YAG laser and the second beam is frequency doubled to 532 nm in a KTP doubling crystal. 116-. (canceled)17. A method of treating secondary cataract or glaucoma in a patient using an ophthalmic laser system comprising:a laser module, which operates to produce a beam of short pulses of radiation with high energy density at a first wavelength;a first beam path for secondary cataract treatment and incorporating an attenuator, beam shaping optics, and means for directing the beam of short pulses at said first wavelength to an eye of a patient with secondary cataract;a second beam path for glaucoma treatment and incorporating a frequency conversion module that converts the beam of short pulses at the first wavelength to a beam of short pulses at a second wavelength, an attenuator, and means for directing the beam of short pulses at said second wavelength to an eye of a patient with glaucoma; andan extracavity deflecting means for selectively deflecting the beam of short pulses at said first wavelength into the second beam path, said extracavity deflecting means being operable betweena first position in which the beam of short pulses at said first wavelength is received by and follows the first beam path and a second position in which the beam of short pulses at said first wavelength is deflected to, received by and follows said second beam path;the method comprising:operating the extracavity deflecting means to select the first or second beam path depending on whether the patient has secondary cataract or glaucoma; andoperating the laser system through the selected ...

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Номер записи: 46
08-03-2018 дата публикации

EYE TISSUE MEASUREMENTS

Номер: US20180064577A1
Автор: Fu Hong, Liu Harvey I., Malek Tabrizi Alireza
Принадлежит:

A compact system for performing laser ophthalmic surgery is disclosed. The systems and methods may be used to measure corneal thickness or other anatomy to prepare a treatment plan for any of numerous treatments, such as LASIK, PRK, intra stromal lenticular lens incisions, cornea replacement, or any other treatment. By using a reduced power femtosecond laser backscatter may be measured to calculate distances such as distances between an interior boundary and an exterior boundary of a cornea or other tissue. 1. A method for the precise incision of tissue in a cornea , comprising:docking a femtosecond laser patient interface to a cornea of a patient; 'wherein the attenuated femtosecond laser has a power at the focus point of less than 40 milliwatts;', 'attenuating the femtosecond laser power to a level for measuring,'}focusing the femtosecond laser to a beam at a focal point in the interior side of the cornea of the patient in x lateral axis, y lateral axis and a z depth axis;moving the femtosecond laser focal point in the z axis from the interior side of the cornea through the cornea and toward an exterior side of the cornea;capturing a backscatter of the femtosecond laser focal point as it moves in the z axis from the interior side of the cornea to the exterior side of the cornea; andrecording a time the femtosecond laser focal point moves in the z depth axis from the interior side of the cornea to the exterior side of the cornea;calculating a power of the captured backscatter as the laser focal point moves in the z depth axis from the interior side of the cornea to the exterior side of the cornea;determining a cutting distance, based on the recorded time the laser focal point moves and the calculated power of the captured backscatter;powering up the femtosecond laser from the measuring power to an incision power; andincising the cornea at the determined cutting distance in the cornea to remove a portion of the cornea.2. The method of wherein the cutting distance is ...

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Номер записи: 47
12-03-2015 дата публикации

OPHTHALMOLOGICAL APPARATUS FOR THE BREAKDOWN OF EYE TISSUE

Номер: US20150073397A1
Автор: Rathjen Christian
Принадлежит:

An ophthalmological apparatus includes a handle for manually holding and applying the ophthalmological apparatus, fastening abilities for fixing the ophthalmological apparatus at an eye, a light source, and a light projector for the focused projection of light pulses for punctiform tissue breakdown at a focal point in the interior of the eye tissue. The ophthalmological apparatus also includes a movement driver for moving the light projector. The movement of the light projector and therefore that of the focal point with the assistance of the movement driver permits a dimensioning of the optical projection system of the light projector which is substantially smaller than in the case of an ophthalmological apparatus where the focal point is moved exclusively by an optical projection system. 1. An ophthalmological apparatus , comprising:a light source, and fastening means configured to fix the appliance on the eye,', 'a light projector, optically connected to the light source, for the focused projection of light pulses for punctiform tissue breakdown at a focal point in the interior of the eye tissue, and having a projection axis,', 'a movement driver configured to mechanically move the light projector and its projection axis with the appliance being fixed on the eye, to move the focal point of the punctiform tissue breakdown and thereby produce cuts by moving said focal point., 'an appliance for manual application onto an eye, the application comprising2. The ophthalmological apparatus according to claim 1 , wherein the movement driver and the light projector are set up and coupled such that the light projector is movable into a position in which at least a portion of the eye can be examined in top view upon fixing the appliance on the eye.3. The ophthalmological apparatus according to claim 1 , wherein the movement driver and the light projector are set up and coupled such that the light projector can be moved equidistantly from a movement surface.4. The ...

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Номер записи: 48
17-03-2016 дата публикации

APPARATUS FOR PATTERNED PLASMA-MEDIATED LASER OPHTHALMIC SURGERY

Номер: US20160074218A1
Автор: Andersen Dan E., Blumenkranz Mark S., Mordaunt David H., PALANKER Daniel V.
Принадлежит:

A system for ophthalmic surgery on an eye includes: a pulsed laser which produces a treatment beam; an OCT imaging assembly capable of creating a continuous depth profile of the eye; an optical scanning system configured to position a focal zone of the treatment beam to a targeted location in three dimensions in one or more floaters in the posterior pole. The system also includes one or more controllers programmed to automatically scan tissues of the patient's eye with the imaging assembly; identify one or more boundaries of the one or more floaters based at least in part on the image data; iii. identify one or more treatment regions based upon the boundaries; and operate the optical scanning system with the pulsed laser to produce a treatment beam directed in a pattern based on the one or more treatment regions. 120-. (canceled)21. A laser surgical system for making incisions in ocular tissues during a cataract surgical procedure , the system comprising:a laser system comprising a scanning assembly;a laser operable to generate a laser beam configured to incise ocular tissue;an imaging device configured to acquire image data of at least a portion of the crystalline lens; and operate the imaging device to acquire image data;', 'identify one or more treatment targets based in part of the image data;', 'operate the scanning assembly to position a focal zone of the laser beam at a predetermined position in the ocular tissue;', 'prior to scanning the target tissue at the predetermined position, operate the imaging device to generate image data and process the image data to determine whether the one or more treatment targets is located at the predetermined position; and', 'if the one or more targets is at the predetermined position, operate the laser and the scanning assembly to scan the focal zone of the laser beam in a treatment scanning pattern, wherein positioning of the focal zone in the treatment scanning pattern is determined in part by the control system based on ...

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Номер записи: 49
05-03-2020 дата публикации

OPHTHALMIC LASER SURGICAL SYSTEM AND METHOD FOR CORNEAL LENTICULAR INCISIONS WITH UNAMBIGUOUS ENTRY CUTS

Номер: US20200069470A1
Автор: Fu Hong, Hill James, Khatibzadeh Nima, Malek Tabrizi Alireza
Принадлежит:

An ophthalmic laser procedure for forming a lenticule in a cornea and extracting the lenticule from the cornea to accomplish vision correction. An ophthalmic laser system is used to form top and bottom lenticule incisions defining a lenticule in between, and further to form top and/or bottom entry cuts that respectively end unambiguously near the top or bottom lenticule surface. The bottom entry cut intersects both the top and bottom lenticule incisions but ends near the bottom lenticule incision. The entry cuts allow the surgeon to insert a surgical tool which reaches the intended top or bottom lenticule surface without ambiguity. The lenticule has an optical zone in the center that defines the optical power of the lenticule, and a transition zone in the periphery, where the end points of the entry cuts are located in the transition zone. 1. A method for extracting a lenticule from a cornea of a patient's eye , comprising:operating an ophthalmic surgical laser system to form a top lenticule surface incision and a bottom lenticule surface incision in the cornea, the top and bottom lenticule surface incisions intersecting each other at a closed line defining a lenticule edge, the top and bottom lenticule incisions forming a lenticule of corneal tissue between them; andoperating the ophthalmic surgical laser system to form a top entry cut in the cornea, the top entry cut having a shape that starts from a top surface of the cornea, extends downwardly and inwardly, intersects the top lenticule surface incision at an intersection location, and ends at an end location inside the lenticule, wherein the end location is at a distance between 3 to 40 microns from the intersection location, and wherein at the intersection location, an angle between a portion of the top entry cut above the intersection location and a portion of the top lenticule surface incision inside of the intersection location is an acute angle.2. The method of claim 1 , further comprising claim 1 , before ...

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Номер записи: 50
19-03-2015 дата публикации

PRODUCING CUT SURFACES IN A TRANSPARENT MATERIAL BY MEANS OF OPTICAL RADIATION

Номер: US20150080864A2
Автор: Bischoff Mark, Papastathopoulos Evangelos, Stobrawa Gregor
Принадлежит:

A method for producing a cut surface in a transparent material using optical radiation. A laser device separates the material using optical radiation and includes an optical unit focussing the radiation along an optical axis into an image field defining an image-field size. A focal position is adjusted transversely along the axis, producing a cut surface extending substantially parallel to the axis and, in projection along the axis, is a curve having a maximum extent. The focus is displaced by adjustment of the focal position along a trajectory curve lying in the cut surface. The cut surface has a maximum extent which is greater than the image-field size. The focal position is moved transverse to the axis along the curve. The image field is displaced transversely, and the focal position is adjusted in an oscillating fashion along the axis on the curve between an upper and lower axial focus position. 119-. (canceled)20. A method for producing a cut in a transparent material , in particular eye tissue , the method comprisingfocussing optical radiation into the transparent material by using optics which define an optical axis and have in the material an image field of an image field size,wherein the cut extends substantially parallel to the optical axis and defines, in projection along the optical axis, a form of a curve andgenerating the cut by shifting a focus within the material along a path which is located in the cut,wherein a position of the focus is moved transverse to the optical axis along the curve and during such movement along the curve, the position of the focus is moved along the optical axis in several oscillations between an upper axial focus position and a lower axial focus position.21. The method according to claim 20 , wherein optical radiation is switched off or modified on sections of the oscillating movement in which the position of the focus moves with a direction of incidence of the optical radiation claim 20 , the optical radiation is switched ...

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Номер записи: 51
05-06-2014 дата публикации

SHIELDED INTRAOCULAR PROBE FOR IMPROVED ILLUMINATION OR THERAPEUTIC APPLICATION OF LIGHT

Номер: US20140155870A1
Автор: Connor Christopher Sheldon
Принадлежит:

An intraocular light probe has a mask or shield affixed at its distal end thereof which forms a directed light beam for intraocular application of light to target tissues or intraocular application of therapeutic light. The mask or shield serves to more fully focus, intensify and direct the beam toward the target tissues. The mask or shield also helps direct light away from other tissues and away from the eyes of the surgeon. By placing a light probe beneath a surgical instrument such as a phacoemulsifier or vitrector, laser, cutting instrument (e.g., scissors or knife), forceps or probe/manipulator, whether as part of or separate from an infusion sleeve, a mask or shield effect is created. This has the same benefits of directing the beam toward target tissues, away from other tissues and away from the eyes of the surgeon. The mask/shield can be removed from the fiberoptic light for sterilization. The device of the invention is preferably introduced into the eye via the primary or side-port incision to provide intraocular cross-lighting of tissues during surgical procedures such as cataract surgery, corneal surgery, vitrectomy, intraocular lens implantation, refractive surgery, glaucoma surgery and vitreo/retinal surgery. 1. An intraocular probe for insertion into the eye to provide intraocular application of therapeutic light , comprising:a therapeutic light source for providing intraocular therapeutic light;a shield operably connected to said light source and having an aperture therein for directing said therapeutic light toward target tissues, said aperture being 180 degrees or less in cross-section, the shield shielding said therapeutic light from being directed toward other tissues and the eyes of a surgeon manipulating the light probe, whereby unwanted application of the light is diminished;wherein said aperture extends in a transverse direction and in a longitudinal direction with respect to a long axis of said shield and is configured to direct said ...

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Номер записи: 52
12-03-2020 дата публикации

LASER SYSTEM DELIVERING ULTRA-SHORT PULSES ALONG MULTIPLE BEAM DELIVERY PATHS

Номер: US20200081261A1
Автор: TREISER Matthew David
Принадлежит:

A laser system includes a laser source generating a laser beam having ultra-short pulses; a laser delivery assembly optically receiving the laser beam and comprising: a beam splitter configured to split the laser beam between a first beam delivery path and a second beam delivery path; and at least one focusing lens optically coupled to the beam splitter and configured to focus the laser beam from each of the first beam delivery path and the second beam delivery path to a focal point on a predefined plane; wherein the first beam delivery path intersects the predefined plane at a first angle, the second beam delivery path intersects the predefined plane at a second angle, and a first pulse from the first beam delivery path and a second pulse from the second beam delivery path are coincident at the focal point. 1. A laser system comprising:a laser source generating a laser beam comprising ultra-short pulses; a beam splitter configured to split the laser beam between a first beam delivery path and a second beam delivery path; and', 'at least one focusing lens optically coupled to the beam splitter and configured to focus the laser beam from each of the first beam delivery path and the second beam delivery path to a focal point on a predefined plane;', 'wherein the first beam delivery path intersects the predefined plane at a first angle, the second beam delivery path intersects the predefined plane at a second angle, and a first pulse from the first beam delivery path and a second pulse from the second beam delivery path are coincident at the focal point., 'a laser delivery assembly optically coupled to the laser source to receive the laser beam, the laser delivery assembly comprising2. The laser system of claim 1 , wherein the second angle is different from the first angle.3. The laser system of claim 1 , wherein the second angle is equivalent to the first angle.4. The laser system of claim 1 , wherein the first beam delivery path and the second beam delivery path have ...

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Номер записи: 53
29-03-2018 дата публикации

Laser methods and systems for the aligned insertion of devices into a structure of the eye

Номер: US20180085256A1
Автор: Gary Gray, Valas Teuma
Принадлежит: Lensar Inc

Systems, methods and apparatus for replacement of cataractous lenses, the insertions of devices into the eye, and the alignment of IOLs, including toric IOLs. Systems, methods and apparatus for forming laser cut capsulotomies having alignment nubs that are aligned with an astigmatic axis of the eye.

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Номер записи: 54
29-03-2018 дата публикации

Systems and Methods for Laser Eye Surgery

Номер: US20180085257A1
Автор: HORVATH Christopher, Vera Vanessa Isabella
Принадлежит: KeLo Tec Inc

Laser eye surgery is in recent years more and more augmented and supported by the application of various photodisruptive laser pulse applications to the eye tissue. The here described inventions relates to several methods and system for improved laser eye surgery using photodisruptive laser pulses. 1. A method for eye surgery , comprising a femtosecond laser system to cut a tissue structure of an eye with a sequence of multiple laser pulses creating micro cavitation bubbles and where a laser pulse scanning sequence moves the laser pulses from a proximal position relative to a laser delivery system beam output to a distal position relative to the laser delivery system beam output.2. A system as in where the special distance of the multiple laser pulse sequence is controlled such that the resulting micro cavitation bubbles interfere with each other and move as a result of such interference. The present non-provisional application claims the benefit of priority under 35 U.S.C. § 119(e) of U.S. provisional application No. 62/400629 filed on Sep. 28, 2016, the entire content of which is incorporated herein by reference.The present invention generally relates to systems, apparatus, and methods related to surgery and micromachining. More particularly, the present invention relates to systems, apparatus and methods for eye surgery. Eye surgery and particularly Cataract surgery is one of the most common surgical procedures performed. The primary goal of cataract surgery is the removal of the defective lens and replacement with an artificial lens or intraocular lens (IOL) that restores some of the optical properties of the defective lens.The major steps in cataract surgery consist of making cornea incisions to allow access to the anterior chamber of the eye and to correct for astigmatism (Limbal relaxing incisions, LRIs), cutting and opening the capsule of the lens to gain access to the lens, fragmenting and removing of the lens and in most cases placing an artificial ...

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Номер записи: 55
21-03-2019 дата публикации

APPARATUS FOR PATTERNED PLASMA-MEDIATED LASER OPHTHALMIC SURGERY

Номер: US20190083305A1
Автор: Andersen Dan E., Blumenkranz Mark S., Mordaunt David H., PALANKER Daniel V.
Принадлежит:

A system for ophthalmic surgery on an eye includes: a pulsed laser which produces a treatment beam; an OCT imaging assembly capable of creating a continuous depth profile of the eye; an optical scanning system configured to position a focal zone of the treatment beam to a targeted location in three dimensions in one or more floaters in the posterior pole. The system also includes one or more controllers programmed to automatically scan tissues of the patient's eye with the imaging assembly; identify one or more boundaries of the one or more floaters based at least in part on the image data; iii. identify one or more treatment regions based upon the boundaries; and operate the optical scanning system with the pulsed laser to produce a treatment beam directed in a pattern based on the one or more treatment regions. 120.-. (canceled)21. An ophthalmic surgical system for treating a floater in an eye of a patient , comprising:a pulsed laser configured to produce a pulsed laser treatment beam which creates tissue breakdown in a focal zone of the pulsed laser treatment beam within the eye;an optical scanning system configured to position the focal zone of the laser treatment beam to a targeted location in three dimensions in the eye; andan imaging assembly configured to acquire image data from locations distributed throughout a volume adjacent a posterior pole of the eye, the imaging system comprising one or more selected from the group consisting of an interferometer, a time domain optical coherence tomography system, a frequency domain optical coherence tomography system, a confocal microscope, and a scanning confocal microscope system; operate the imaging system to acquire image data from locations distributed throughout the volume adjacent the posterior pole of the eye and construct one or more images of ocular tissue of the eye from the image data, wherein the one or more images comprise one or more boundaries of the floater in the ocular tissue;', 'construct a ...

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Номер записи: 56
21-03-2019 дата публикации

OPHTHALMOLOGICAL DEVICE FOR PROCESSING EYE TISSUE BY MEANS OF A PULSED PROCESSING LASER BEAM

Номер: US20190083308A1
Автор: Rathjen Christian
Принадлежит:

An ophthalmological device () for processing eye tissue () comprises a laser source () for generating a pulsed laser beam (P), a focusing optical unit () for focusing a processing laser beam (L) into the eye tissue (), and a scanner system () for deflecting the processing laser beam (L) into the eye tissue (). The ophthalmological device () additionally comprises a beam splitting system () disposed upstream of the scanner system () and configured to generate the processing laser beam (L) from the pulsed laser beam (P) in such a way that the processing laser beam (L) comprises two beam parts (L L), wherein one of the beam parts (L) is focused by the focusing optical unit () onto the lower outer surface () of a lenticule () to be cut in the eye tissue (), and the other beam part (L) is focused onto the upper outer surface () of the lenticule () to be cut, such that both the lower and the upper outer surfaces () are processed when the processing laser beam (L) is deflected into the eye tissue (20). 1. Ophthalmological device for processing eye tissue , comprising a laser source configured to generate a pulsed laser beam; a focusing optical unit configured to focus a processing laser beam into the eye tissue , and a scanner system configured to direct the processing laser beam into the eye tissue in accordance with predefined scanning patterns;wherein the ophthalmological device further comprises a beam splitting system disposed upstream of the scanner system and configured to generate the processing laser beam from the pulsed laser beam in such a way that the processing laser beam comprises a first beam part and a second beam part, wherein the first beam part is focused by the focusing optical unit onto a first outer surface of a lenticule to be cut in the eye tissue, and the second beam part is focused onto a different, second outer surface of the lenticule to be cut in the eye tissue, and, in the course of directing the processing laser beam into the eye tissue by ...

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Номер записи: 57
21-03-2019 дата публикации

METHODS AND APPARATUSES FOR THE TREATMENT OF GLAUCOMA USING VISIBLE AND INFRARED ULTRASHORT LASER PULSES

Номер: US20190083314A1
Автор: Berlin Michael S.
Принадлежит:

Transcorneal and fiberoptic laser delivery systems and methods for the treatment of eye diseases wherein energy is delivered by wavelengths transparent to the cornea to effect target tissues in the eye for the control of intraocular pressure in diseases such as glaucoma by delivery systems both external to and within ocular tissues. External delivery may be effected under gonioscopic control. Internal delivery may be controlled endoscopically or fiberoptically, both systems utilizing femtosecond laser energy to excise ocular tissue. The femtosecond light energy is delivered to the target tissues to be treated to effect precisely controlled photodisruption to enable portals for the outflow of aqueous fluid in the case of glaucoma in a manner which minimizes target tissue healing responses, inflammation and scarring. 1. (canceled)2. A method of creating a plurality of openings in a trabecular meshwork of a patient's eye to conduct fluid from an anterior chamber into a Schlemm's canal of the eye , comprising:ablating a first crater to a first depth in the trabecular meshwork adjacent to the Schlemm's canal with first laser pulses without entering the Schlemm's canal; ablating a second crater to a second depth in the trabecular meshwork adjacent to the Schlemm's canal with second laser pulses without entering the Schlemm's canal; extending the first crater with third laser pulses to a third depth and extending the second crater with fourth laser pulses to a fourth depth, wherein the first crater is extended to the third depth and the second crater is extended to the fourth depth after the second crater has been extended to the second depth, so as to penetrate an inner wall of the Schlemm's Canal, to form the plurality of openings to conduct fluid from the anterior chamber to the Schlemm's canal, and wherein each of the femtosecond laser pulses comprises a wavelength of within a range from 0.4 to 2.5 microns, a fluence level to produce optical breakdown, and a pulse ...

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Номер записи: 58
31-03-2016 дата публикации

SYSTEMS AND METHODS FOR LENTICULAR LASER INCISION

Номер: US20160089270A1
Автор: Fu Hong
Принадлежит:

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. 1. An ophthalmic surgical laser system comprising: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; anda controller configured to control the XY-scan device and the Z-scan device to form a top lenticular incision and a bottom lenticular incision of a lens in the subject's eye.2. The ophthalmic surgical laser system of further comprising a resonant scanner.3. The ophthalmic surgical laser system of claim 1 , wherein the XY-scan device deflects the pulsed laser beam to form a scan line.4. The ophthalmic surgical laser system of claim 3 , wherein the scan line is tangential to the parallels of latitude of the lens.5. The ophthalmic surgical laser system of claim 4 , wherein the scan line is moved along the meridians of longitude of the lens.6. The ophthalmic surgical laser system of claim 5 , wherein the top lenticular incision is moved over the top surface of the lens through the apex of the top surface of the lens claim 5 , and the bottom lenticular incision is moved over the bottom surface of the lens through the apex of bottom surface of the lens.7. The ophthalmic surgical laser system of claim 4 , wherein there is a deviation between an end point of the scan line and a point on the spherical surface of the lens.9. The ophthalmic surgical laser system of ...

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Номер записи: 59
30-03-2017 дата публикации

Eye surgery procedure

Номер: US20170087020A1
Автор: Andreas Bartels
Принадлежит: CARL ZEISS MEDITEC AG

A planning apparatus for generating control data for an eye surgery treatment device which creates at least one cut surface in the cornea using a laser device. The planning apparatus includes a calculation tool for determining the at least one cut surface in the cornea. The calculation tool determines the at least one cut surface in the cornea based on data from a refractive correction and generates a set of control data that control the laser device for the at least one cut surface in the cornea. The at least one cut surface in the cornea includes an edge and optically effective areas. The calculation tool determines the at least one cut surface in the cornea such the at least one cut surface in the cornea is deeper at the edge than in the optically effective areas.

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Номер записи: 60
30-03-2017 дата публикации

Eye surgical procedure

Номер: US20170087021A1
Автор: Jon Dishler, Mark Bischoff
Принадлежит: CARL ZEISS MEDITEC AG

A planning system for generating control data for a treatment device for eye surgery that creates at least two incision surfaces in the cornea using a laser apparatus is provided. The planning system includes a processor configured to specify the cornea incision surfaces based on data of a refractive correction, the cornea incision surfaces including an lenticule incision and a cap incision, at least one of the cap incision or the lenticule incision being irregularly shaped and having extensions to the surrounding tissue, and generate a control data record for the cornea incision surfaces for purposes of controlling the laser apparatus.

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Номер записи: 61
07-04-2016 дата публикации

PATIENT INTERFACE FOR OPHTHALMOLOGIC DIAGNOSTIC AND INTERVENTIONAL PROCEDURES

Номер: US20160095517A1
Автор: Beltran Christine, Gooding Phillip, Talamo Jonathan H., Wiltberger Michael W.
Принадлежит:

An ophthalmic system may comprise an imaging device having a field of view oriented toward the eye of the patient; a patient interface housing defining a passage therethrough, having a distal end coupled to one or more seals configured to be directly engaged with one or more surfaces of the eye of the patient, and wherein the proximal end is configured to be coupled to the patient workstation such that at least a portion of the field of view of the imaging device passes through the passage; and two or more registration fiducials coupled to the patient interface housing in a predetermined geometric configuration relative to the patient interface housing within the field of view of the imaging device such that they may be imaged by the imaging device in reference to predetermined geometric markers on the eye of the patient which may also be imaged by the imaging device. 127-. (canceled)28. A method for ophthalmic intervention on an eye of a patient , comprising:a. orienting a field of view of an imaging device toward the eye of the patient;b. coupling a distal end of a patient interface housing to one or more seals configured to be directly engaged with one or more surfaces of the eye of the patient, and coupling a proximal end of the patient interface housing to a patient workstation such that at least a portion of the field of view of the imaging device passes through a passage of the patient housing defined by the proximal and distal ends;c. imaging, within the field of the view of the imaging device, two or more registration fiducials coupled to the patient interface housing in reference to predetermined geometric markers on the eye of the patient, which are also imaged by the imaging device; and 'wherein the two or more registration fiducials are coupled to the patient interface housing in a predetermined geometric configuration relative to the patient interface housing within the field of view of the imaging device.', 'd. processing imaging data generated via ...

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Номер записи: 62
07-04-2016 дата публикации

METHODS AND APPARATUSES FOR THE TREATMENT OF GLAUCOMA USING VISIBLE AND INFRARED ULTRASHORT LASER PULSES

Номер: US20160095751A1
Автор: Berlin Michael S.
Принадлежит:

Transcorneal and fiberoptic laser delivery systems and methods for the treatment of eye diseases wherein energy is delivered by wavelengths transparent to the cornea to effect target tissues in the eye for the control of intraocular pressure in diseases such as glaucoma by delivery systems both external to and within ocular tissues. External delivery may be effected under gonioscopic control. Internal delivery may be controlled endoscopically or fiberoptically, both systems utilizing femtosecond laser energy to excise ocular tissue. The femtosecond light energy is delivered to the target tissues to be treated to effect precisely controlled photodisruption to enable portals for the outflow of aqueous fluid in the case of glaucoma in a manner which minimizes target tissue healing responses, inflammation and scarring. 1. A method of creating an opening in the trabecular meshwork of an eye of a patient , comprising:producing ultrashort laser pulses whose fundamental wavelength is in the range of infrared through visible light;propagating the ultrashort laser pulses through a high numerical aperture optic so as to produce a focused beam of light; andguiding the beam of light through the eye tissue enclosing the anterior chamber of the eye to focus at a selected location on the trabecular meshwork of the eye.2. An apparatus for creating an opening in the trabecular meshwork of an eye of a patient , comprising:an ultrashort pulse generating laser having a fundamental wavelength in the range of infrared through visible light;a high numerical aperture optic coupled to the laser to produce a focused beam of ultrashort pulses generated by the laser;a gonialens adapted to be fixedly attached to the cornea of an eye; anda guidance optic fixedly attached to the gonial lens for guiding the beam of ultrashort laser pulses; anda guidance system connected to the guidance optic to move the optic and thereby guide the beam through the eye tissue enclosing the anterior chamber of the ...

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Номер записи: 63
13-04-2017 дата публикации

CENTERING TECHNIQUE FOR A CUTTING LASER FOR REFRACTIVE OPHTHALMIC SURGERY

Номер: US20170100282A1
Автор: Donitzky Christof, Klenke Jörg, Riedel Peter, Seiler Theo
Принадлежит:

According to certain embodiments, a method for laser cutting treatment of a human eye comprises: determining position information of a pupil center of the eye in relation to a point of minimal corneal thickness in an undeformed state of the eye; locating the point of minimal corneal thickness in a flattened state of the eye, in which the eye is deformed by contact with a patient adapter of a laser device; and aligning a pulse firing pattern for laser radiation pulses of the laser device, based on a position of the located point of minimal corneal thickness and the determined position information. In embodiments, the pulse firing pattern represents, for example, a lenticular or doughnut-shaped intracorneal tissue volume which is to be removed from the cornea of the eye. 1. Method for laser cutting treatment of a human eye , comprising:determining position information of a reference feature of the eye in relation to a given corneal point in an undeformed state of the eye;locating the given corneal point in a deformed state of the eye; andaligning a pulse firing pattern for laser radiation pulses of a laser device, based on a position of the located given corneal point in a coordinate system of the laser device and the determined position information.2. Method according to claim 1 , wherein the deformed state of the eye is a state in which the cornea of the eye is deformed by contact with a contact element of a patient adapter of the laser device.3. Method according to claim 2 , wherein the deformed state is a flattened state of the cornea.4. Method according to claim 1 , wherein the given corneal point represents a site of minimal thickness of the cornea.5. Method according to claim 1 , wherein the reference feature represents a pupil center of the eye.6. Method according to claim 1 , one of to claim 1 , wherein the position information represents a two-dimensional position of the reference feature in relation to the given corneal point.7. Method according to claim 1 ...

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Номер записи: 64
02-06-2022 дата публикации

METHODS FOR LENTICULAR LASER INCISION

Номер: US20220168144A1
Автор: Fu Hong, Hill James E., Malek Tabrizi Alireza, Rahaman Mohammad Saidur, Witowski Zenon
Принадлежит:

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. 130.-. (canceled)31. A method comprising:directing an ophthalmic surgical femtosecond pulsed laser beam into an intrastromal corneal layer of a patient, wherein at a position delivered to the intrastromal corneal layer, a wavelength of the laser is between 300 nm and 1100 nm, a pulse frequency of the laser is between 1 and 20 MHz, a pulse width of the laser is between 50 fs and 200 fs, and a pulse energy of the laser is between 20 nJ and 200 nJ;focusing the laser beam into a focal spot in the intrastromal corneal layer, wherein a spot size of the focal spot is between 0.3 μm and 1.5 μm in diameter;moving the laser beam to create a pattern of spaced focal spots inside the intrastromal corneal layer to disrupt cells in the intrastromal corneal layer, wherein a spot spacing between focal spots formed by temporally adjacent laser pulses is between 0.02 μm and 1 μm from center to center of adjacent focal spots, and wherein the focal spots formed by temporally adjacent laser pulses in the pattern overlap; andforming an incision with the spaced focal spots in the intrastromal corneal layer of the patient.32. The method of wherein a wavelength of the laser is between 1020 nm and 1065 nm.33. The method of wherein a spot size is between 0.9 μm and 1.11 μm in diameter.34. The method of wherein a frequency of the laser is 10 MHz.35. The method of wherein a pulse width of the laser is between 100 fs and 200 fs.36. The method of wherein an energy ...

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Номер записи: 65
02-06-2022 дата публикации

SYSTEMS AND METHODS FOR LENTICULAR LASER INCISION

Номер: US20220168148A1
Автор: Fu Hong
Принадлежит:

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. 120.-. (canceled)21. An ophthalmic surgical laser system comprising:a laser delivery system for delivering a pulsed laser beam to a target in a subject's cornea;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; anda controller configured to control the XY-scan device and the Z-scan device to form a concave lens cut comprising a top concave lenticular incision and a bottom concave lenticular incision of a lens in the subject's cornea.22. The ophthalmic surgical laser system of claim 21 , wherein the concave lens cut comprises a spherical surface.23. The ophthalmic surgical laser system of claim 22 , wherein the concave lens cut comprises a cylindrical component or an additional high order component having an order higher than a spherical surface.24. (canceled)25. The ophthalmic surgical laser system of claim 21 , wherein the top concave lenticular incision and the bottom concave lenticular incision are mirror symmetric to each other.26. The ophthalmic surgical laser system of claim 21 , wherein the top lenticular incision and the bottom lenticular incision each comprise a central portion and a peripheral portion.27. The ophthalmic surgical laser system of claim 26 , wherein the peripheral portion tapers.28. The ophthalmic surgical laser system of claim 26 , wherein the peripheral portion is linear or a higher order polynomial.29. The ophthalmic ...

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Номер записи: 66
21-04-2016 дата публикации

LASER EYE SURGERY LENS FRAGMENTATION

Номер: US20160106588A1
Автор: Gonzalez Javier G., Kramme Erik C., Srinivasan Rajeshwari
Принадлежит:

A laser eye surgery system includes a laser to generate a laser beam. A spatial measurement system generates a measurement beam and measure a spatial disposition of an eye. A processor is coupled to the laser and the spatial measurement system, the processor comprising a tangible medium embodying instructions to determine a spatial model of the eye in an eye coordinate reference system based on the measurement beam. The spatial model is mapped from the eye coordinate reference system to a machine coordinate reference system. A laser fragmentation pattern is determined based on a plurality of laser fragmentation parameters. The laser fragmentation pattern and the spatial model is rotated by a first rotation angle such that the spatial model is aligned with the reference axis of the machine coordinate reference system and the rotated laser fragmentation pattern is aligned with the corneal incision. 1. A laser eye surgery system , comprising:a laser to generate a laser beam;a spatial measurement system to generate a measurement beam and measure a spatial disposition of an eye; determine a spatial model of the eye in an eye coordinate reference system based on the measurement beam;', 'map the spatial model from the eye coordinate reference system to a machine coordinate reference system;', 'receive a rotation angle of a corneal incision relative to a reference axis of the machine coordinate reference system;', 'determine a laser fragmentation pattern based on a plurality of laser fragmentation parameters;', 'determine a first rotation angle based on the rotation angle of the corneal incision and a rotation angle of the laser fragmentation pattern relative to the reference axis of the machine coordinate reference system;', 'rotate the spatial model by a negative of the first rotation angle; and', 'rotate the laser fragmentation pattern and the spatial model by the first rotation angle such that the spatial model is aligned with the reference axis of the machine ...

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Номер записи: 67
21-04-2016 дата публикации

METHODS FOR PREVENTING OR TREATING POSTERIOR CAPSULAR OPACIFICATION

Номер: US20160106591A1
Автор: McArdle George J.
Принадлежит:

The present invention relates to methods and apparatus for preventing or treating posterior capsular opacification in a subject in need of prophylaxis or treatment for posterior capsular opacification, including a subject undergoing cataract surgery by ablating epithelial cells on an interior surface of the lens capsule with a multi-photon laser system. 1. A method for preventing or treating posterior capsular opacification in a subject in need of prophylaxis or treatment of posterior capsular opacification , wherein the subject has a lens capsule having an anterior portion and a posterior portion , and each of the anterior and posterior portions has an exterior surface and an interior surface , the method comprising:imaging epithelial cells on one or more interior surfaces of the lens capsule using an imaging technique selected from the group consisting of confocal microscopy, adaptive optics, ultrasound, detecting a chemical agent and/or a biological agent, multi-photon laser imaging, and combinations thereof; andablating the imaged epithelial cells.2. The method of claim 1 , wherein a laser is used for imaging the epithelial cells claim 1 , and the same laser used for imaging is used for ablating the epithelial cells.3. The method of claim 1 , wherein the ablation system comprises a femtosecond laser as the laser source.4. The method of claim 1 , wherein the epithelial cells are ablated without damaging or breaking the lens capsule.5. The method of claim 1 , wherein the method further comprises removing a cataractous lens from the subject while retaining the lens capsule claim 1 , and inserting an artificial intraocular lens; and either before and/or after the inserting step claim 1 , imaging and ablating the epithelial cells one or both of the interior surfaces of the lens capsule.6. The method of claim 5 , wherein the epithelial cells are imaged at the interior surface of the anterior portion of the lens capsule before the inserting step.7. The method of claim ...

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Номер записи: 68
19-04-2018 дата публикации

Second pass femtosecond laser for incomplete laser full or partial thickness corneal incisions

Номер: US20180104104A1
Автор: E. Valaski Teuma, Gary Gray
Принадлежит: Lensar Inc

A method for forming an incision in an eye, the method including performing a first pass of a first laser beam along a path within an eye, wherein after completion of the first pass there exists a residual uncut layer at an anterior surface of a cornea of the eye. The method further including performing a second pass of a second laser beam only along a portion of the path that contains the residual uncut layer, wherein after completion of the second pass, the residual uncut layer is transformed into a full complete through surface incision.

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Номер записи: 69
09-06-2022 дата публикации

OPHTHALMIC TREATMENT DEVICE AND CONTROL METHOD THEREFOR

Номер: US20220175578A1
Автор: KIM Jong Min
Принадлежит:

The present invention relates to an ophthalmic treatment apparatus and a control method therefor, and provides an ophthalmic treatment apparatus and a control method therefor, the ophthalmic treatment apparatus comprising: a setting unit formed so as to set a treatment mode; a therapeutic light emission unit emitting therapeutic light at a target position of an eyeground multiple times so as to perform treatment; a monitoring unit for monitoring information on the state of the target position by the therapeutic light during the emission of the therapeutic light; and a control unit for determining whether a treatment intensity according to the treatment mode has been reached, by using the information monitored by the monitoring unit, and for controlling an operation of the therapeutic light emission unit on the basis of the determination. 1. An ophthalmic treatment apparatus comprising:a setting unit configured to set a treatment mode;a treatment beam irradiation unit for irradiating a target site of the eye with a treatment beam multiple times so as to perform treatment;a monitoring unit for monitoring information on a tissue state of the target site caused by the treatment beam during the treatment beam irradiation; anda control unit for determining whether a set treatment intensity according to the treatment mode is reached, by using the information monitored by the monitoring unit, and for controlling an operation of the treatment beam irradiation unit on the basis of the determinationwherein the monitoring unit comprises a first monitoring unit for monitoring a treatment intensity and a second monitoring unit for detecting an abnormal occurrence.2. The ophthalmic treatment apparatus of claim 1 , wherein the first monitoring unit and the second monitoring unit monitor the information on the tissue state of the target site in different way.3. The ophthalmic treatment apparatus of claim 1 , wherein the first monitoring unit and the second monitoring unit ...

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Номер записи: 70
26-04-2018 дата публикации

ROBUST LASER CUTTING METHODS FOR OPHTHALMIC SURGERY

Номер: US20180110648A1
Автор: Fu Hong, Tamkin John M.
Принадлежит:

A method and apparatus for performing ophthalmic laser surgery using a pulsed laser beam is provided. The method includes establishing an initial cutting pattern comprising a plurality of original photodisruption points, establishing an enhanced cutting pattern comprising a plurality of enhanced photodisruption points selected to decrease potential adverse effects due to patient movement and having increased density over a fixed area as compared with the plurality of original photodisruption points, and performing an ocular surgical procedure according to the enhanced cutting pattern Enhanced cutting patterns may include circular cuts around the periphery of a capsule, vertical side cuts for lens fragmentation, raster lamellar cuts, and grid lamellar cuts. Each photodisruption point in the initial cutting pattern and the enhanced cutting pattern comprises a laser target point. 1. A method for performing ophthalmic laser surgery using a device configured to transmit a pulsed laser beam , comprising:establishing an initial cutting pattern comprising a plurality of original photodisruption points;establishing an enhanced cutting pattern comprising a plurality of enhanced photodisruption points selected to decrease potential adverse effects due to patient movement and having increased density over a fixed area as compared with the plurality of original photodisruption points; anddirecting the pulsed laser beam to make a generally circular cut around a periphery of a patient capsule according to the enhanced cutting pattern;wherein each photodisruption point in the initial cutting pattern and the enhanced cutting pattern comprises a laser target point, and wherein the generally circular cut made around the periphery of the patient capsule provides an increased length scanning pattern length relative to a cut made according to the initial cutting pattern.2. A method for performing ophthalmic laser surgery using a device configured to transmit a pulsed laser beam , ...

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Номер записи: 71
10-07-2014 дата публикации

OPHTHALMOLOGIC LASER DEVICE AND METHOD FOR PREVENTING AND TREATING AFTERCATARACT

Номер: US20140194860A1
Автор: Dick Manfred, Kuehnert Juergen, Reich Matthias
Принадлежит: CARL ZEISS MEDITEC AG

An ophthalmologic laser device includes a pulsed laser configured to produce radiation focused along at treatment beam path. A variably adjustable beam deflector unit and a focusing lens system are disposed in the treatment beam path. The deflector unit is configured to focus the radiation in different target volumes. Measuring equipment is configured to determine a shape and position of optical interfaces along a detection beam path. A control unit is configured to control the laser and the deflector unit and to implement steps including determining a shape and position of an interface of a membrane of a capsular bag of an eye located in a treatment area using the measuring equipment, determining coordinates of a target volume such that, on irradiation of the target volume, a pressure wave runs from the target volume to the anterior or posterior membrane, and adjusting the deflector unit to the target determined volume. 125-. (canceled)26. An ophthalmologic laser device comprising:a pulsed laser configured to produce radiation focused along at treatment beam path;a variably adjustable beam deflector unit and a focusing lens system disposed in the treatment beam path, the deflector unit being configured to focus the radiation in different target volumes;measuring equipment configured to determine a shape and position of optical interfaces along a detection beam path; and determine a shape and position of at least one interface of a membrane of a capsular bag of an eye located in a treatment area using the measuring equipment,', 'determine coordinates of a target volume such that, on irradiation of the target volume with a laser pulse of predetermined pulse energy, a pressure wave runs from the target volume at least up to the anterior or posterior membrane without tearing the respective membrane, and', 'adjust the deflector unit to the determined target volume so as to irradiate the target volume with at least one laser pulse of the predetermined pulse energy using ...

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Номер записи: 72
05-05-2016 дата публикации

VITRECTOMY PROBE WITH AN OPTICAL FIBER SCANNER

Номер: US20160120699A1
Автор: Farley Mark
Принадлежит:

A vitrectomy probe for treating an eye of a patient, the probe including a body arranged for grasping by a surgeon, and a photodisruption element extending from the body. The photodisruption element includes a needle having a main lumen extending from the body, the needle comprising a port at an end, a fiber cannula within the main lumen, the fiber cannula having a fiber lumen, and an optical fiber within the fiber lumen, the optical fiber being mechanically agitatable within the fiber lumen. 1. A vitrectomy probe for treating an eye of a patient , the probe comprising:a body arranged for grasping by a surgeon; and a needle having a main lumen extending from the body, the needle comprising a port at an end;', 'a fiber cannula within the main lumen, the fiber cannula having a fiber lumen; and', 'an optical fiber within the fiber lumen, the optical fiber being mechanically agitatable within the fiber lumen., 'a photodisruption element extending from the body, the photodisruption element including2. The probe of claim 1 , wherein the optical fiber comprises a rounded tip configured as a lens of the optical fiber.3. The probe of claim 1 , wherein the optical fiber comprises a bearing at a tip of the optical fiber.4. The probe of claim 3 , wherein the fiber lumen comprises a lens at a distal end of the fiber lumen claim 3 , the lens shaped to fit the bearing such that agitation of the optical fiber causes the bearing to rotate within the lens.5. The probe of claim 4 , further comprising a lubricant between the lens and the bearing claim 4 , the lubricant having a refractive index that matches a refractive index of the optical fiber.6. The probe of claim 1 , wherein a distal surface of the optical fiber is directed such that mechanical agitation of the optical fiber causes a beam being projected from the distal surface to scan the port.7. The probe of claim 1 , further comprising claim 1 , wherein the main lumen is an aspiration lumen for extracting vitreous tissue that ...

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Номер записи: 73
17-07-2014 дата публикации

ROBUST LASER CUTTING METHODS FOR OPHTHALMIC SURGERY

Номер: US20140200563A1
Автор: Fu Hong, Tamkin John M.
Принадлежит: AMO Development, LLC.

A method and apparatus for performing ophthalmic laser surgery using a pulsed laser beam is provided. The method includes establishing an initial cutting pattern comprising a plurality of original photodisruption points, establishing an enhanced cutting pattern comprising a plurality of enhanced photodisruption points selected to decrease potential adverse effects due to patient movement and having increased density over a fixed area as compared with the plurality of original photodisruption points, and performing an ocular surgical procedure according to the enhanced cutting pattern. Enhanced cutting patterns may include circular cuts around the periphery of a capsule, vertical side cuts for lens fragmentation, raster lamellar cuts, and grid lamellar cuts. Each photodisruption point in the initial cutting pattern and the enhanced cutting pattern comprises a laser target point. 1. A method for performing ophthalmic laser surgery using a device configured to transmit a pulsed laser beam , comprising:establishing an initial cutting pattern comprising a plurality of original photodisruption points;establishing an enhanced cutting pattern comprising a plurality of enhanced photodisruption points selected to decrease potential adverse effects due to patient movement and having increased density over a fixed area as compared with the plurality of original photodisruption points; anddirecting the pulsed laser beam to make a generally circular cut around a periphery of a patient capsule according to the enhanced cutting pattern;wherein each photodisruption point in the initial cutting pattern and the enhanced cutting pattern comprises a laser target point, and wherein the generally circular cut made around the periphery of the patient capsule provides an increased length scanning pattern length relative to a cut made according to the initial cutting pattern.2. A method for performing ophthalmic laser surgery using a device configured to transmit a pulsed laser beam , ...

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Номер записи: 74
04-05-2017 дата публикации

LASER-ASSISTED THERMAL SEPARATION OF TISSUE

Номер: US20170119576A1
Автор: Mordaunt David H.
Принадлежит:

A laser-assisted method for fully or partially separating tissue such as collagen containing tissue is provided. In one embodiment, the method pertains to a capsulorhexis whereby the laser-assisted method is applied to the lens capsule. A light-absorbing agent is added into or onto the tissue. A light beam with a wavelength capable of being absorbed by the light absorbing agent is then directed at the tissue to cause a thermal effect at the tissue following a predetermined closed curve with the goal to avoid irregularity or potential tears in the resulting rim of the tissue. 1. A device for treating tissue in the anterior lens capsule of an eye , the device comprising:a laser device programmed to direct a treatment laser beam along a predetermined closed curve on the anterior lens capsule in a single pass starting at an initial point interior to the closed curve, then along the closed curve, and then to a final point interior to the closed curve.2. The device of claim 1 , wherein the closed curve is circular or elliptical.345. The device of claim 2 , wherein a diameter of the closed curve is about millimeters to about millimeters.4. The device of claim 1 , comprising a laser device programmed to direct a visible laser beam along a visualization pattern on the anterior lens capsule to assist a user in selecting the location and size of the closed curve.5. The device of claim 4 , wherein the visualization pattern differs from the closed curve.6. The device of claim 5 , wherein the visualization pattern comprises discrete dots assisting in focusing the treatment laser beam.7. The device of claim 1 , comprising a laser device programmed to direct a visible laser beam along a visualization pattern on the anterior lens capsule to assist a user in selecting the location and size of the closed curve claim 1 , wherein:the closed curve is circular or elliptical; andthe visualization pattern differs from the closed curve.8. The device of claim 7 , wherein the visualization ...

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Номер записи: 75
04-05-2017 дата публикации

Short pulse laser with adjustable pulse length

Номер: US20170119577A1
Автор: Gennady Imeshev
Принадлежит: AMO DEVELOPMENT LLC

Embodiments of this invention relate to a system and method for performing laser ophthalmic surgery. The surgical laser system configured to deliver a laser pulse to a patient's eye comprises a laser engine that includes a compressor configured to compress laser light energy received, the compressor comprising a dispersion or spectrum altering component provided on a computer controlled stage connected to a computing device. A user providing an indication of a desired pulse width received by the computing device causes the computing device to reposition the stage and the component provided thereon, resulting in a different pulse length being transmitted by the laser engine.

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Номер записи: 76
25-04-2019 дата публикации

OPHTHALMOLOGICAL APPARATUS FOR THE BREAKDOWN OF EYE TISSUE

Номер: US20190117453A1
Автор: Rathjen Christian
Принадлежит:

An ophthalmological apparatus includes a handle for manually holding and applying the ophthalmological apparatus, fastening abilities for fixing the ophthalmological apparatus at an eye, a light source, and a light projector for the focused projection of light pulses for punctiform tissue breakdown at a focal point in the interior of the eye tissue. The ophthalmological apparatus also includes a movement driver for moving the light projector. The movement of the light projector and therefore that of the focal point with the assistance of the movement driver permits a dimensioning of the optical projection system of the light projector which is substantially smaller than in the case of an ophthalmological apparatus where the focal point is moved exclusively by an optical projection system. 1. An ophthalmological apparatus , comprising a light source and an appliance for application onto an eye of a patient , the appliance comprising:a fastener configured to fix the appliance on the eye of the patient, a light projector, optically connected to the light source, having a lens for focused projection of light pulses for punctiform tissue breakdown at a focal point in the interior of the eye tissue of the eye of the patient, and having a projection axis, anda movement driver system configured to mechanically move the light projector and its projection axis, relative to the eye of the patient, with the appliance being fixed on the eye of the patient, to move the focal point with translatory movements and thereby produce cuts in the eye of the patient by moving said focal point, andan optical microscanner configured to superimpose an additional fine movement of the focal point onto the translatory movements of the focal point.2. The ophthalmological apparatus of claim 1 , wherein the movement driver system comprises a first movement driver configured to move the light projector and thereby the focal point with a translatory movement in an x-direction claim 1 , and a second ...

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Номер записи: 77
16-04-2020 дата публикации

SCANNING DEVICE

Номер: US20200113734A1
Автор: Bischoff Mark, Gerlach Mario, Hanft Marco, Muehlhoff Dirk
Принадлежит:

A scanning device for focusing a beam of rays in defined regions of a defined volume, comprising an input optics wherein the beam of rays penetrates first, having at least one first optical element; a focusing optics for focusing the beam of rays exiting from the input optics; and a deflecting device arranged between the first optical element and the focusing optics, for deflecting the beam of rays after it has passed through the first optical element, based on a position of the focus to be adjusted in lateral direction. In order to adjust the position of the focus of the beam of rays in the direction of the beam of rays, and optical element of the input optics can be displaced relative to the deflecting device. 1. (canceled)2. A surgical laser system including a scanning device for focusing a luminous beam into a selected range of an eye to be treated , the surgical laser system comprising:a femtosecond surgical laser source that produces the luminous beam;entrance optics following the femtosecond surgical laser source into which the luminous beam first enters comprising at least a first optical element;focusing optics by which the luminous beam emitted from the entrance optics is focused on or into the eye to be treated;the entrance optics comprising at least one movable optical element that is configured to be movable along an axis generally parallel to the luminous beam where the luminous beam passes through the entrance optics to the deflecting device to adjust the focus position of the luminous beam within a portion of the eye3. The surgical laser system including a scanning device according to claim 2 , further comprising:a deflecting device arranged between the first optical element and the focusing optics that diverts a focus position of the luminous beam;the deflecting device comprising a first movable reflective element movable about a first axis configured to deflect the luminous beam in an X direction and a second movable reflective element movable ...

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Номер записи: 78
23-04-2020 дата публикации

IMAGE PROCESSING METHOD AND SYSTEM FOR EDGE DETECTION AND LASER EYE SURGERY SYSTEM INCORPORATING THE SAME

Номер: US20200121178A1
Автор: Gonzalez Javier
Принадлежит:

A method of imaging an object includes obtaining an image data set from a raster scan. The image data set has a plurality of data points, each data point having an associated location and intensity; generating a reduced data set by selectively removing one or more data points from the image data set based upon an assigned probability of retaining the one or more data points in the data set, the assigned probability being a function of the intensity of a data point; generating a triangulation graph as a planar subdivision having faces that are triangles, the vertices of which are the data points and the edges of which are adjacent vertices; and segmenting the triangulated data set by finding a path with lowest cost between that vertex and every other vertex, wherein the cost is a function of the respective intensity of the vertices. 110-. (canceled)11. A system for imaging an object comprising:memory for storing a plurality of instructions; anda processor for executing the instructions to perform a plurality of steps, the instructions comprising:obtaining an image data set from a raster scan of the object, the image data set comprising a plurality of data points, each data point having a location and intensity associated with it;generating a reduced data set by selectively removing one or more data points from the image data set based upon an assigned probability of retaining the one or more data points in the data set, the assigned probability being a function of the intensity of a data point;generating a triangulation graph of the reduced data as a planar subdivision having faces that are triangles, the vertices of which are the data points of the reduced data set and the edges of which are adjacent vertices; andsegmenting the triangulation graph by finding a path with lowest cost between that vertex and every other vertex, wherein the cost is a function of the respective intensity of the vertices.12. The system of claim 11 , wherein the object is a human eye.13. ...

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Номер записи: 79
02-05-2019 дата публикации

Femtosecond laser system and methods for photorefractive keratectomy

Номер: US20190125584A1
Автор: Dimitri A. Chernyak
Принадлежит: AMO DEVELOPMENT LLC

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, or just a bottom lenticular incision.

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Номер записи: 80
03-06-2021 дата публикации

APPARATUS FOR TREATING A TISSUE, INCLUDING ORIGINAL OPTICAL SYSTEMS OF DEFLECTION AND FOCUSING OF A LASER BEAM

Номер: US20210161708A1
Автор: BAUBEAU Emmanuel
Принадлежит:

The invention relates to a treatment apparatus including a device for conditioning a LASER beam generated by a femtosecond laser, the conditioning device comprising an optical sweeping scanner () and a focusing optical system () downstream of the optical sweeping scanner (), remarkable in that a pivoting mirror () of the optical sweeping scanner () is positioned between an object focal plane Fof the focusing optical system () and the focusing system (). 1. An apparatus for treating a human or animal tissue , said apparatus including a device for conditioning a LASER beam generated by a femtosecond laser , the conditioning device being disposed downstream of the femtosecond laser and comprising an optical sweeping scanner and a focusing optical system downstream of the optical sweeping scanner:The optical sweeping scanner including:at least one optical mirror pivoting around at least one axis to deflect the LASER beam,The focusing optical system includinga concentrator module to focus the LASER beam in a focusing plane,{'sub': 'object', 'wherein said at least one pivoting optical mirror of the optical sweeping scanner is positioned between an object focal plane Fof the focusing optical system and the focusing system.'}2. The treatment apparatus of claim 1 , wherein said at least one pivoting optical mirror of the optical sweeping scanner extends over the optical path of the LASER beam between:{'sub': 'object', 'the object focal plane Fof an equivalent lens corresponding to the focusing optical system, and'}an input orifice of the focusing optical system.3. The treatment apparatus according to claim 2 , wherein an entrance pupil of the concentrator module is positioned in the plane of the equivalent lens corresponding to the focusing optical system.4. The treatment apparatus according to claim 2 , wherein the focusing optical system includes an optical relay device upstream of the concentrator module.5. The treatment apparatus according to claim 4 , wherein the ...

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Номер записи: 81
21-05-2015 дата публикации

Method and Apparatus for Patterned Plasma-Mediated Laser Trephination of the Lens Capsule and Three Dimensional Phaco-Segmentation

Номер: US20150141968A1
Автор: Andersen Dan E., Blumenkranz Mark S., Mordaunt David H., PALANKER Daniel V.
Принадлежит:

System and method for making incisions in eye tissue at different depths. The system and method focuses light, possibly in a pattern, at various focal points which are at various depths within the eye tissue. A segmented lens can be used to create multiple focal points simultaneously. Optimal incisions can be achieved by sequentially or simultaneously focusing lights at different depths, creating an expanded column of plasma, and creating a beam with an elongated waist. 120-. (canceled)21. A laser surgical system for making incisions in ocular tissues during a cataract surgical procedure , the system comprising:a laser system comprising a scanning assembly, a laser operable to generate a laser beam configured to incise ocular tissue;an imaging device configured to acquire image data from locations distributed throughout a volume of a crystalline lens of the patient and construct one or more images of the patient's eye tissues from the image data, wherein the one or more images comprise an image of at least a portion of the crystalline lens; and ["operate the imaging device to generate image data for the patient's crystalline lens;", 'process the image data to determine an anterior capsule incision scanning pattern for scanning a focal zone of the laser beam for performing an anterior capsule incision, wherein the anterior capsule incision is not in the form of a circle; and', 'operate the laser and the scanning assembly to scan the focal zone of the laser beam in the anterior capsule incision scanning pattern to perform the anterior capsule incision, wherein positioning of the focal zone is guided by the control system based on the image data., 'a control system operably coupled to the laser system and configured to22. The system of claim 21 , wherein the anterior capsule incision is in the fruit of a flap.23. The system of claim 22 , wherein the flap is hemi-circular.24. The system of claim 22 , wherein the flap is curvilinear.25. The system of claim 22 , wherein ...

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Номер записи: 82
21-05-2015 дата публикации

Ophthalmic Laser System

Номер: US20150141973A1
Автор: Feklistov Dmitri, Plunkett Malcolm
Принадлежит: Ellex Medical Pty Ltd

An ophthalmic laser system generating a first beam at a wavelength suitable for performing selective laser trabeculoplasty and selectively generating a second beam at a wavelength suitable for performing secondary cataract surgery procedures. The laser system is able to select between directing the first beam or the second beam to the eye of a patient. The first beam is suitably generated at 1064 nm from a Nd:YAG laser and the second beam is frequency doubled to 532 nm in a KTP doubling crystal. 115-. (canceled)16. A method of treating secondary cataract or glaucoma in a patient using an ophthalmic laser system comprising:a laser module comprising a Q-switched laser which operates to produce pulsed radiation at a first wavelength,a first beam path adapted to treating secondary cataract incorporating an attenuator, beam shaping optics, and directing optics for directing the beam of short pulses at the first wavelength to an eye of a patient with secondary cataract;a second beam path adapted to treating glaucoma by selective laser trabeculoplasty incorporating a frequency conversion module that converts the pulsed beam at the first wavelength to a pulsed beam at a second wavelength, an attenuator, and directing optics for directing the pulsed beam at the second wavelength to an eye of a patient with glaucoma; andbeam steering optics for selectively deflecting the beam of short pulses at the first wavelength into the second beam path, the beam steering optics being operable between a first position in which the pulsed beam at the first wavelength is received by and follows the first beam path and a second position in which the pulsed beam at the first wavelength is deflected to, received by and follows the second beam path;the method comprising:operating the beam steering optics to select the first or second beam path depending on whether the patient has secondary cataract or glaucoma; and operating the laser system through the selected beam path to treat the patient. ...

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Номер записи: 83
30-04-2020 дата публикации

DEVICE FOR MACHINING AN OBJECT BY APPLICATION OF LASER RADIATION

Номер: US20200129329A1
Автор: EBERT Elke, Gerlach Mario, Hanft Marco, Muehlhoff Dirk
Принадлежит:

A device for machining an object by laser radiation, by photodisruption. The device includes an observation device for imaging the object and a laser scanning device by which the laser radiation is passed over a predetermined sector of the object for scanning the sector. The device includes the observation device with a first lens for imaging the object; the laser scanning device with a second lens, through which the laser radiation is guided, in which both lenses with regard to the dimension of the regions to be produced in the images and/or with regard to their focal intercept are different from each other. The device alternately images the respective region of the object in a first operating mode by the first lens and in a second operating mode by the second lens. It is thus possible to use in both operating modes a lens adapted to the intended imaging purpose. 1. (canceled)2. A device for treating an eye using laser radiation , comprising:an observation device having a first objective lens that images the eye, the first objective lens being configured to image the eye along a first optical path;a treatment laser source that emits the laser radiation in femtosecond laser pulses that create photodisruption in tissues of the eye;a laser scan device including a second objective lens that images the eye and through which the laser radiation is guided to scan through a sector within the eye that is intended to be treated; the second objective lens being configured to image the eye along a second optical path;wherein the first objective lens and the second objective lens are different from each other in a size of a segment presented for observation in the images and/or in terms of a focal intercept of the first objective lens and the second objective lens;further wherein, the first objective lens and the second objective lens are shiftable to image the eye along the first optical path and the second optical path; andfurther wherein during a first operating mode, the ...

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Номер записи: 84
26-05-2016 дата публикации

Apparatus and Corneal Remodeling Methods to Improve Vision in Macular Disease

Номер: US20160143783A1
Автор: Yavitz Edward Allen
Принадлежит:

Apparatus and methods to improve the vision in a person with a macular disease, comprising the purposeful temporary creation of increased corneal optical aberrations. Strategies include corneal treatment patterns that are one or more of asymmetric, decentered or eccentric with respect to the visual axis, which would result in worsening vision in a normal eye but surprisingly become sight enhancing in a patient with the loss of foveal function due to macular disease. 1. An apparatus for temporarily altering the topography of the human cornea to purposely increase optical aberrations in order to move light rays from an observed object to preferred retinal locations away from a diseased fovea.2. The apparatus of comprising one of a hydrogel contact lens claim 1 , an ultrasound claim 1 , a laser claim 1 , a thermal conducting wire or a radio frequency conducting wire.3. The apparatus of comprising one of a thulium laser claim 1 , an excimer laser claim 1 , a holmium laser and a femtosecond laser.4. The alteration of corneal surface topography of comprising increased convexity which is one or more of asymmetric claim 1 , decentered claim 1 , or eccentric with respect to the visual axis.5. The optical aberrations of comprising one or more of defocus claim 1 , prism claim 1 , tilt claim 1 , astigmatism claim 1 , coma claim 1 , trefoil and tetrafoil.6. A diseased macula of comprising one of macular degeneration claim 1 , geographic atrophy claim 1 , Best's disease claim 1 , Stargardt's disease claim 1 , chronic macular edema claim 1 , macular hole claim 1 , macular pucker claim 1 , chloroquine maculopathy claim 1 , solar maculopathy claim 1 , angioid streaks claim 1 , cone degenerations claim 1 , choroidal folds claim 1 , chronic epiretinal membrane claim 1 , chronic central serous maculopathy claim 1 , foveal loss due to histoplasmosis claim 1 , toxoplasmosis claim 1 , amoebiasis.7. The preferred retinal locations of comprising non-foveal areas of retina located 0.01 to 3. ...

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Номер записи: 85
10-06-2021 дата публикации

METHOD FOR DETERMINING A CURRENT POSITION OF A PATIENT INTERFACE OF AN EYE SURGICAL LASER BASED ON A PURKINJE IMAGE

Номер: US20210169691A1
Автор: ARBA-MOSQUERA Samuel, SHRAIKI Mario, TRIEFENBACH Nico
Принадлежит:

A method is disclosed for determining a current position of a patient interface of an eye surgical laser for an eye relative to an optical axis of a laser beam of a treatment apparatus. The method includes determining a target position of the patient interface relative to the optical axis, positioning the patient interface in a preset area in front of the optical axis, illuminating the patient interface by means of an illumination device, capturing a Purkinje image by means of the optical capturing device, comparing the captured Purkinje image to the optical axis and determining the current position of the patient interface depending thereon, comparing the current position to the target position and with a deviation, and outputting a control signal to a control device of the treatment apparatus. A treatment apparatus, a computer program and a computer-readable medium are disclosed for carrying out the method. 114.-. (canceled)15. A method for determining a current position of a patient interface of an eye surgical laser of a treatment apparatus for an eye of a patient relative to an optical axis of a laser beam of the laser in a neutral pose of a beam deflection device of the treatment apparatus , comprising the steps of:determining a target position of the patient interface relative to the optical axis;positioning the patient interface in a preset area in front of the optical axis;illuminating the patient interface by means of an illumination device of the treatment apparatus;capturing a Purkinje image, which is associated with the patient interface, by means of an optical capturing device of the treatment apparatus;comparing the captured Purkinje image to the optical axis and determining the current position of the patient interface depending thereon; andcomparing the current position to the target position and with a deviation of the current position from the target position, outputting a control signal to a control device of the treatment apparatus.16. The ...

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Номер записи: 86
10-06-2021 дата публикации

METHOD FOR DETERMINING A CURRENT POSITION OF AN EYE OF A PATIENT BASED ON A PURKINJE IMAGE

Номер: US20210169692A1
Автор: ARBA-MOSQUERA Samuel, KLINNER Thomas, SHRAIKI Mario, TRIEFENBACH Nico
Принадлежит:

A method is disclosed for determining a current position of an eye of a patient relative to an optical axis of a laser beam of a treatment apparatus. The method includes presetting a criterion characterizing the eye, determining a first target position of the eye relative to the optical axis, positioning a patient interface in a preset area in front of the optical axis, illuminating the eye during an approaching procedure of the patient interface to the eye, capturing a Purkinje image, which is associated with a cornea of the eye, by means of an optical capturing device during the approaching procedure, comparing the captured Purkinje image to the optical axis and determining the current position of the eye depending thereon, comparing the current position to the target position and with a deviation, outputting a control signal to a control device of the treatment apparatus. 118.-. (canceled)19. A method for determining a current position of an eye of a patient relative to an optical axis of a laser beam in a neutral pose of a beam deflection device of a treatment apparatus , comprising the steps of:presetting a criterion characterizing the eye depending on patient information of the patient;determining a first target position of the eye relative to the optical axis;positioning a patient interface of the treatment apparatus in a preset area in front of the optical axis;illuminating the eye by means of an illumination device of the treatment apparatus during an approaching procedure of the patient interface to the eye;capturing a Purkinje image, which is associated with a cornea of the eye, by means of the optical capturing device during the approaching procedure;comparing the captured Purkinje image to the optical axis and determining the current position of the eye depending thereon; andcomparing the current position to the target position and with a deviation of the current position from the target position, outputting a control signal to a control device of the ...

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Номер записи: 87
10-06-2021 дата публикации

METHOD FOR CONTROLLING AN EYE SURGICAL LASER WITH A TRANSITION ZONE AT THE VOLUME BODY

Номер: US20210169693A1
Автор: ARBA-MOSQUERA Samuel
Принадлежит:

A method for controlling an eye surgical laser is disclosed for the separation of a volume body. The method includes determining a target position of a pupil relative to a laser beam and determining an optical zone with a treatment center on interfaces relative to an optical axis of the laser beam, determining a transition zone at the volume body as an extension of the interface, capturing a current actual position of the pupil, determining a deviation between the target position and the actual position, and decentering the determined optical zone relative to the optical axis depending on the determined deviation such that the edge of the volume body is generated concentrically to the optical axis and the optical zone is generated concentrically to the determined treatment center and within the transition zone. Further disclosed are a treatment apparatus, a computer program and computer-readable medium capable of performing the method. 112.-. (canceled)13. A method for controlling an eye surgical laser of a treatment apparatus for the separation of a volume body with an anterior interface and with a posterior interface , wherein the anterior interface and the posterior interface contact each other at an edge of the volume body , comprising:determining a target position of a pupil of the eye relative to a laser beam of the laser in a neutral pose of a beam deflection device of the treatment apparatus depending on patient information and determining an optical zone with a treatment center on at least one of the interfaces relative to an optical axis of the laser beam in the neutral pose of the beam deflection device depending on the patient information;determining a transition zone at the volume body as an extension of the interface with the optical zone;capturing a current actual position of the pupil by means of an optical capturing device of the treatment apparatus;determining a deviation between the target position and the actual position; anddecentering the ...

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Номер записи: 88
28-05-2015 дата публикации

ADJUSTING LASER TREATMENT IN RESPONSE TO CHANGES IN THE EYE

Номер: US20150148788A1
Автор: Abraham Mario, Lemonis Sissimos
Принадлежит:

According to certain embodiments, a system comprises one or more memories and one or more processors. The one or more memories store optical data from an optical recorder comprising at least two optical data sets by: receiving a first optical data set of an eye with a pupil having a first pupil size; and receiving a second optical data set of the eye with the pupil having a second pupil size. The one or more processors determine a pseudo-rotation related to a pupil size change, receive a measured cyclotorsion, calculate an actual cyclotorsion from the measured cyclotorsion and the pseudo-rotation, and adjust a laser treatment according to the actual cyclotorsion. 1. A method comprising: gathering a first optical data set of an eye with a pupil having a first pupil size; and', 'gathering a second optical data set of the eye with the pupil having a second pupil size;, 'storing, by one or more memories, optical data from an optical recorder comprising at least two optical data sets bydetermining, by one or more processors, a pseudo-rotation related to a pupil size change;receiving, by the one or more processors, a measured cyclotorsion;calculating, by the one or more processors, an actual cyclotorsion from the measured cyclotorsion and the pseudo-rotation; andadjusting, by the one or more processors, a laser treatment according to the actual cyclotorsion.2. The method of claim 1 , the calculating the actual cyclotorsion from the measured cyclotorsion and the pseudo-rotation further comprising:subtracting the pseudo-rotation from the measured cyclotorsion.3. The method of claim 1 , the determining the pseudo-rotation related to the pupil size change further comprising:determining a first coordinate set indicating a first location of a feature of the eye from the first optical data set;determining a second coordinate set indicating a second location of the feature of the eye from the first second data;calculating a coordinate difference between the first coordinate set ...

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Номер записи: 89
17-06-2021 дата публикации

SYSTEM AND METHOD OF CORNEAL CROSS-LINKING

Номер: US20210177651A1
Автор: Loerner Johannes, Riedel Peter, Weise Linda
Принадлежит:

The disclosure provides a system that may: receive data associated with multiple locations associated with a cornea of an eye; adjust at least one lens, based at least on diameter information of the data associated with at least one of the multiple locations, to set a diameter of a laser beam; and for each location of the multiple locations: determine if the eye has changed from a first position to a second position; if the eye has not changed from the first position to the second position, adjust, based at least on the location, at least one mirror; if the eye has changed from the first position to the second position, adjust, based at least on the location and based at least on the second position, the at least one mirror; produce the laser beam; and direct the laser beam to the location for a period of time. 1. A medical system , comprising:at least one processor;a laser that is communicatively coupled to the at least one processor and that is configured to produce one or more laser beams;at least one lens;at least one mirror; and receive data associated with a plurality of locations associated with a cornea of an eye of a patient;', 'adjust the at least one lens, based at least on diameter information of the data associated with at least one of the plurality of locations, to set a diameter of a laser beam; and', determine if the eye has changed from a first position of the eye to a second position of the eye, different from the first position of the eye;', 'if the eye has not changed from the first position of the eye to the second position of the eye, adjust, based at least on the location, the at least one mirror;', 'if the eye has changed from the first position of the eye to the second position of the eye, adjust, based at least on the location and based at least on the second position of the eye, the at least one mirror;', 'produce the laser beam; and', 'direct the laser beam to the location for a period of time associated with the location., 'for each ...

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Номер записи: 90
11-06-2015 дата публикации

DEVICES AND METHODS FOR GENERATION OF SUBSURFACE MICRO-DISRUPTIONS FOR OPTHALMIC SURGERY AND OPTHALMIC APPLICATIONS

Номер: US20150157505A1
Автор: Neev Joseph
Принадлежит:

A Device and a method for using laser energy for treatment of ophthalmic tissue. The device comprises an energy source capable of generating short bursts of energy at a range of pulse repetition rates. The method comprises surface and three dimensional interactions for therapeutic use and/or to modify or remove tissue from ophthalmic targets. A device comprises an energy source capable of generating short bursts of energy at a variable pulse repetition rates. The repetition rates range from a single shot to several hundred Mega-Hertz so that selective, three dimensional interactions with a volumetric modified zone within targeted tissue of the eye issue. 1. A device for treating tissue or the human eye , the device comprising: an energy source coupled to at least one optical component and at least one controller that operates the energy source , to generate an output beam of energy , said beam of energy generates a plurality of photomodified volumes of material at or below the surface of the eye , wherein said photomodified volumes comprise a three dimensional pattern within the tissue treated tissue or human eye , and wherein said three dimensional pattern thus generated further shows no unintended modifications in the targeted tissue of the eye further than about 5 micrometer outside the boundary of said pattern of photomodified volumes.2. The device of claim 1 , wherein the controller is configured to control the output beam such that the output energy beam comprises pulsed emission claim 1 , wherein each pulse has a duration of no more than about 10.sup.−6 seconds.3. The device of claim 1 , wherein the controller is configured to control the output beam such that the output energy beam comprises pulsed emission claim 1 , wherein each pulse has a duration of no more than about 10.sup.−9 seconds.4. The device of claim 1 , wherein the controller is configured to control the output beam such that the output energy beam comprises pulsed emission claim 1 , wherein ...

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Номер записи: 91
11-06-2015 дата публикации

Ophthalmic Laser System

Номер: US20150157506A1
Автор: Feklistov Dmitri, Plunkett Malcolm
Принадлежит: Ellex Medical Pty Ltd

An ophthalmic laser system generating a first beam at a wavelength suitable for performing selective laser trabeculoplasty and selectively generating a second beam at a wavelength suitable for performing secondary cataract surgery procedures. The laser system is able to select between directing the first beam or the second beam to the eye of a patient. The first beam is suitably generated at 1064 nm from a Nd:YAG laser and the second beam is frequency doubled to 532 nm in a KTP doubling crystal. 1. An ophthalmic laser system , comprising: a laser module adapted to produce a beam of short pulses of radiation with high energy density at a first wavelength; a first beam path incorporating an attenuator , beam shaping optics , and means for directing the beam at said first wavelength to an eye of a patient; a second beam path incorporating a frequency conversion module that converts the beam at the first wavelength to a beam at a second wavelength , an attenuator , and means for directing the beam at said second wavelength to the eye of the patient; and extracavity deflecting means for selectively deflecting the beam at said first wavelength into the second beam path , said extracavity deflecting means being operable between a first position in which the beam at said first wavelength follows the first beam path and a second position in which the beam at said first wavelength is deflected to said second beam path.2. The ophthalmic laser system of claim 1 , wherein the extracavity deflecting means comprises a half wave plate and polarizer.3. The ophthalmic laser system of claim 1 , wherein said half wave plate is rotatable by motorized means.4. The ophthalmic laser system of claim 1 , wherein the half wave plate is remotely operable.5. The ophthalmic laser system of claim 1 , further comprising means for remotely selecting between said first beam path and said second beam path.6. The ophthalmic laser system of claim 1 , wherein the laser module is a flashlamp pumped claim ...

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Номер записи: 92
11-06-2015 дата публикации

Posterior Capsulotomy Using Laser Techniques

Номер: US20150157507A1
Автор: Loesel Frieder, Mordaunt David Haydn, Mosedale Gwillem
Принадлежит:

A system and method are provided for removing a natural lens and inserting an Intraocular Lens (IOL) into the lens capsule of an eye. Specifically, this is accomplished by inserting the IOL through an opening on the posterior capsule that is created using a focused laser beam. The system includes a laser unit, a detector for creating images of the interior of the eye, and a computer that controls the cooperative functions of the detector and the laser unit. Based on images of the posterior capsule provided by the detector, the computer is used to control movements of the focal point through tissue of the posterior capsule to perform Laser Induced Optical Breakdown (LIOB) on posterior capsule tissue. The result is a laser capsulotomy that creates an opening through the posterior capsule allowing the natural lens to be removed and the IOL to be implanted. 1. A system for inserting an Intraocular Lens (IOL) into the lens capsule of the eye comprising:a detector for creating images of the interior of the eye;a laser unit for generating a laser beam, and for focusing the laser beam to a focal point; anda computer connected to the detector, and to the laser unit, for processing an image from the detector for use in controlling movements of the focal point to create an opening through tissue of the posterior capsule of an eye for inserting the IOL in the lens capsule of the eye through the opening in the posterior capsule.2. A system as recited in claim 1 , wherein the opening is established by creating a section of tissue separated from the posterior capsule claim 1 , and the system further comprises at least one probe claim 1 , wherein a probe is advanced through an access port in the sclera to engage with the section of separated tissue for withdrawal of the separated section of tissue from the eye claim 1 , and wherein a probe is used to insert the IOL through the access port into the lens capsule.3. A system as recited in wherein the laser beam is a pulsed laser beam. ...

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Номер записи: 93
15-09-2022 дата публикации

LASER SYSTEM DELIVERING ULTRA-SHORT PULSES ALONG MULTIPLE BEAM DELIVERY PATHS

Номер: US20220291516A1
Автор: TREISER Matthew David
Принадлежит:

A laser system includes a laser source generating a laser beam having ultra-short pulses; a laser delivery assembly optically receiving the laser beam and comprising: a beam splitter configured to split the laser beam between a first beam delivery path and a second beam delivery path; and at least one focusing lens optically coupled to the beam splitter and configured to focus the laser beam from each of the first beam delivery path and the second beam delivery path to a focal point on a predefined plane; wherein the first beam delivery path intersects the predefined plane at a first angle, the second beam delivery path intersects the predefined plane at a second angle, and a first pulse from the first beam delivery path and a second pulse from the second beam delivery path are coincident at the focal point. 1. A laser system comprising:a laser source generating a laser beam comprising ultra-short pulses; a beam splitter configured to split the laser beam between a first beam delivery path and a second beam delivery path; and', 'at least one focusing lens optically coupled to the beam splitter and configured to focus the laser beam from each of the first beam delivery path and the second beam delivery path to a focal point on a predefined plane;', 'wherein the first beam delivery path intersects the predefined plane at a first angle, the second beam delivery path intersects the predefined plane at a second angle, and a first pulse from the first beam delivery path and a second pulse from the second beam delivery path are coincident at the focal point., 'a laser delivery assembly optically coupled to the laser source to receive the laser beam, the laser delivery assembly comprising2. The laser system of claim 1 , wherein the second angle is different from the first angle.3. The laser system of claim 1 , wherein the second angle is equivalent to the first angle.4. The laser system of claim 1 , wherein the first beam delivery path and the second beam delivery path have ...

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Номер записи: 94
09-06-2016 дата публикации

TECHNIQUE FOR SETTING ENERGY-RELATED LASER-PULSE PARAMETERS

Номер: US20160158061A1
Автор: Donitzky Christof, Foesel Matthias, Kittelmann Olaf, Vogler Klaus
Принадлежит:

A method for energy setting of pulsed, focused laser radiation is provided. In the method, a relationship between a threshold pulse energy required for causing irreversible damage in a material and a pulse duration is established. The relationship allows for obtaining a threshold pulse energy for each of a plurality of pulse durations, including one or more pulse durations in a range between 200 fs and smaller. The relationship defines a decreasing threshold pulse energy for a decreasing pulse duration in the range between 200 fs and smaller. For a given pulse duration in the range between 200 fs and smaller, an associated threshold pulse energy is determined based on the established relationship. The pulse energy of the laser radiation is set based on the determined associated threshold pulse energy. 1. A method for energy setting of pulsed , focused laser radiation , the method comprising:establishing a relationship between a threshold pulse energy and a pulse duration, the threshold pulse energy being the pulse energy required for causing irreversible damage in a material, the relationship allowing to obtain a threshold pulse energy for each of a plurality of pulse durations, the plurality of pulse durations including one or more pulse durations in a range between 200 fs and smaller, the relationship defining a decreasing threshold pulse energy for a decreasing pulse duration in the range between 200 fs and smaller;for a given pulse duration in the range between 200 fs and smaller, determining an associated threshold pulse energy based on the established relationship; andsetting the pulse energy of the laser radiation based on the determined associated threshold pulse energy.2. The method of claim 1 , wherein the relationship represents a decrease of the threshold pulse energy substantially as a function of the cubic root of the pulse duration.3. The method of claim 1 , wherein the relationship defines the threshold pulse energy as a value of at most 0.35 μJ for ...

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Номер записи: 95
07-06-2018 дата публикации

POSTERIOR CAPSULOTOMY USING LASER TECHNIQUES

Номер: US20180153742A1
Автор: Loesel Frieder, Mordaunt David Haydn, Mosedale Gwillem
Принадлежит:

A system and method are provided for removing a natural lens and inserting an Intraocular Lens (IOL) into the lens capsule of an eye. Specifically, this is accomplished by inserting the IOL through an opening on the posterior capsule that is created using a focused laser beam. The system includes a laser unit, a detector for creating images of the interior of the eye, and a computer that controls the cooperative functions of the detector and the laser unit. Based on images of the posterior capsule provided by the detector, the computer is used to control movements of the focal point through tissue of the posterior capsule to perform Laser Induced Optical Breakdown (LIOB) on posterior capsule tissue. The result is a laser capsulotomy that creates an opening through the posterior capsule allowing the natural lens to be removed and the IOL to be implanted. 1. A method for performing ophthalmic surgery inside an eye which comprises the steps of:performing Laser Induced Optical Breakdown (LIOB) on tissue of the posterior capsule of the eye to create a section of separated tissue defining an opening into the lens capsule of the eye;removing the section of separated tissue from the lens capsule to establish the opening;extracting the lens of the eye from the lens capsule of the eye through the opening in the posterior capsule; andimplanting an optical device in the lens capsule through the opening in the posterior capsule to replace the extracted lens.2. A method as recited in wherein the performing step comprises the steps of:generating a pulsed laser beam;focusing the pulsed laser beam to a focal point; anddirecting the focal point of the pulsed laser beam onto tissue of the posterior capsule inside the eye.3. A method as recited in wherein the performing step further comprises the steps of:creating images of the inside of the eye; andusing an image from the creating step to control movements of the focal point through tissue of the posterior capsule to create the ...

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Номер записи: 96
23-05-2019 дата публикации

OPHTHALMIC TREATMENT DEVICE AND CONTROL METHOD THEREFOR

Номер: US20190151146A1
Автор: KIM Jong Min
Принадлежит:

The present invention relates to an ophthalmic treatment apparatus and a control method therefor, and provides an ophthalmic treatment apparatus and a control method therefor, the ophthalmic treatment apparatus comprising: a setting unit formed so as to set a treatment mode; a therapeutic light emission unit emitting therapeutic light at a target position of an eyeground multiple times so as to perform treatment; a monitoring unit for monitoring information on the state of the target position by the therapeutic light during the emission of the therapeutic light; and a control unit for determining whether a treatment intensity according to the treatment mode has been reached, by using the information monitored by the monitoring unit, and for controlling an operation of the therapeutic light emission unit on the basis of the determination. 1. An ophthalmic treatment apparatus comprising:a setting unit configured to set a treatment mode;a treatment beam irradiation unit for irradiating a target site in the anterior segment of the eye with a treatment beam multiple times so as to perform treatment;a monitoring unit for monitoring information on the state of the target site caused by the treatment beam during the treatment beam irradiation; anda control unit for determining whether a treatment intensity according to the treatment mode is reached, by using the information monitored by the monitoring unit, and for controlling an operation of the treatment beam irradiation unit on the basis of the determination.2. The ophthalmic treatment apparatus of claim 1 , wherein claim 1 , if it is determined that the information detected by the monitoring unit does not reach the set treatment intensity claim 1 , the control unit adjusts the parameters of treatment beams claim 1 , and if it is determined that the information detected by the monitoring unit reaches the set treatment intensity claim 1 , the control unit terminates irradiating the target site with a treatment beam.3. The ...

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Номер записи: 97
18-06-2015 дата публикации

Device for laser cutting within transparent materials

Номер: US20150164689A1
Автор: Alfred Vogel, Norbert Linz, Sebastian Freidank
Принадлежит: UNIVERSITAET ZU LUEBECK

A laser cutting device for transparent material ( 23 ), which device is designed to focus the laser light ( 2 ) into a plurality of predetermined spots within the material ( 23 ), wherein the spots lie on a predetermined cutting line or cutting area ( 24 ) running substantially perpendicularly to the direction of incidence of the laser light ( 2 ), wherein the device comprises means for mode conversion ( 3 ) into laser light having a helical phase front ( 5 ), which means can be brought into and out of the beam path of the laser light ( 2 ).

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Номер записи: 98
16-06-2016 дата публикации

Technique for photodisruptive multi-pulse treatment of a material

Номер: US20160166431A1
Автор: Christof Donitzky, Klaus Vogler
Принадлежит: WaveLight GmbH

Embodiments of the invention provide a method and apparatus for laser-processing a material. In the embodiments, a diffraction-limited beam of pulsed laser radiation is diffracted by a diffraction device to generate a diffracted beam. The diffracted beam is subsequently focused onto the material and is controlled in time and space to irradiate the material at a target position with radiation from a set of radiation pulses of the diffracted beam so that each radiation pulse from the set of radiation pulses is incident at the target position with a cross-sectional portion of the diffracted beam, the cross-sectional portion including a local intensity maximum of the diffracted beam. The beam cross-sectional portions of at least a subset of the pulses of the set include each a different local intensity maximum. In this way, a multi-pulse application for generating a photo-disruption at a target location of the material can be implemented.

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Номер записи: 99
04-09-2014 дата публикации

Scanning device

Номер: US20140247472A1
Автор: Dirk Muehlhoff, Marco Hanft, Mario Gerlach, Mark Bischoff
Принадлежит: CARL ZEISS MEDITEC AG

The invention concerns a scanning device for focusing a beam of rays in defined regions of a defined volume, comprising an input optics wherein the beam of rays penetrates first, having at least one first optical element; a focusing optics for focusing the beam of rays exiting from the input optics; and a deflecting device arranged between the first optical element and the focusing optics, for deflecting the beam of rays after it has passed through the first optical element, based on a position of the focus to be adjusted in lateral direction. In order to adjust the position of the focus of the beam of rays in the direction of the beam of rays, and optical element of the input optics can be displaced relative to the deflecting device.

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Номер записи: 100