The present disclosure relates to an eye treatment system for performing laser surgery on an eye which includes a laser optical system. The laser optical system includes a scanning system for scanning a focus of a laser beam of the laser light within a cornea of the eye in three dimensions. The laser optical system further includes a focusing optical system. The scanning system is in the beam path of the laser beam between the laser source and the focusing optical system. The eye treatment system further includes a contact element which is in the beam path of the laser beam between the focusing optical system and the eye. The contact element has a contact surface for contacting a cornea of the eye. At least a portion of the contact surface has a shape, which is convex toward the cornea.
The present disclosure relates to an ophthalmic laser system for performing laser treatments of an eye. The laser system includes a base, which houses a laser source of the laser system. The system further includes a laser applicator, which comprises an optical system through which the treatment laser beam exits the laser applicator in a direction towards the patient's eye and a supporting arm. The supporting arm is connected to the laser applicator at a first end of the supporting arm and a second end of the supporting arm is connected to the base. The supporting arm is configured so that the laser applicator is positionable relative to the base in three dimensions. The laser system further comprises a motorized three-axis positioning system, which is operatively coupled to the controller for positioning the laser applicator relative to at least a portion of the supporting arm in three dimensions.
09 - Scientific and electric apparatus and instruments
Goods & Services
Computer hardware, in particular in relation to
ophthalmological applications and for laser beam control;
computer software, in particular in relation to
ophthalmological applications and for laser beam control,
mainly for use with ophthalmological/ophthalmic surgical and
optometric apparatus, namely instruments, equipment and
devices for use with medical lasers, intraocular devices or
systems for sight correction/improvement.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Computer hardware, in particular in relation to ophthalmological applications and for laser beam control; computer software, in particular in relation to ophthalmological applications and for laser beam control, mainly for use with ophthalmological/ophthalmic surgical and optometric apparatus, namely instruments, equipment and devices for use with medical lasers, intraocular devices or systems for sight correction/improvement.
5.
METHOD AND SYSTEM FOR FORMING INTRACORNEAL CUTS USING A CONVEX CONTACT SURFACE
The present disclosure relates to an eye treatment system for performing laser surgery on an eye which includes a laser optical system. The laser optical system includes a scanning system for scanning a focus of a laser beam of the laser light within a cornea of the eye in three dimensions. The laser optical system further includes a focusing optical system. The scanning system is in the beam path of the laser beam between the laser source and the focusing optical system. The eye treatment system further includes a contact element which is in the beam path of the laser beam between the focusing optical system and the eye. The contact element has a contact surface for contacting a cornea of the eye. At least a portion of the contact surface has a shape, which is convex toward the cornea.
The present disclosure relates to an eye treatment system for performing laser surgery on an eye which includes a laser optical system. The laser optical system includes a scanning system for scanning a focus of a laser beam of the laser light within a cornea of the eye in three dimensions. The laser optical system further includes a focusing optical system. The scanning system is in the beam path of the laser beam between the laser source and the focusing optical system. The eye treatment system further includes a contact element which is in the beam path of the laser beam between the focusing optical system and the eye. The contact element has a contact surface for contacting a cornea of the eye. At least a portion of the contact surface has a shape, which is convex toward the cornea.
09 - Scientific and electric apparatus and instruments
Goods & Services
Computer hardware, in particular in relation to ophthalmological applications and for laser beam control; computer software, in particular in relation to ophthalmological applications and for laser beam control, mainly for use with ophthalmological/ophthalmic surgical and optometric apparatus, namely instruments, equipment and devices for use with medical lasers, intraocular devices or systems for sight correction/improvement.
(1) Medical and surgical apparatus, instruments, and devices used in diagnosing eye conditions and performing ophthalmic, ocular and eye-related surgical procedures, and component parts thereof; surgical apparatus, instruments and devices used to inject intraocular lenses; medical, surgical, ophthalmic, ocular, refractive, and eye-related lasers; lasers for ophthalmic purposes; ophthalmic, ocular and eye-related implants, apparatus and instruments for use in cataract, corneal, refractive and vitreoretinal surgery.
(1) Medical and surgical apparatus, instruments, and devices used in diagnosing eye conditions and performing ophthalmic, ocular and eye-related surgical procedures, and component parts thereof; surgical apparatus, instruments and devices used to inject intraocular lenses; medical, surgical, ophthalmic, ocular, refractive, and eye-related lasers; lasers for ophthalmic purposes; ophthalmic, ocular and eye-related implants, apparatus and instruments for use in cataract, corneal, refractive and vitreoretinal surgery.
Surgical apparatus and instruments for use in ophthalmic surgery; Ocular implants made of artificial materials; Intraocular lenses; Intraocular prostheses in the nature of lenses for surgical implantation; Holders specially adapted for intraocular lenses; Lenses in the nature of intraocular prosthesis for surgical implantation; Surgical instruments for use in ophthalmic surgery; Surgical apparatus for use in ophthalmic surgery; Optometric instruments for locating the optical center of ophthalmic lenses; Optometric instruments, namely, instruments for measuring the diameter of ophthalmic lenses; Optometric instruments, namely, instruments for locating grooves, engravings and other indicia on ophthalmic lenses; Ophthalmic cameras for medical purposes; Injection instruments without needles for use in ophthalmic surgery; Ophthalmic lasers for surgical and medical use; Pupillometers for measuring pupillary distance; Pupillometers for measuring pupillary reactivity to stimulus; Hand held ophthalmic surgical instruments, namely, aberrometers, topographers, microkeratomes, keratomes, phacoemulsification devices, endoscopes, tonometers and corneal shields; Surgical implants comprised of artificial materials; Medical and surgical knives and cutters for cutting human tissue and organs; Surgical, ophthalmic, and ocular instruments, apparatus, and devices for use in eye surgery; Eye shields and pads for medical or surgical use; Artificial lenses for implantation in the eye; All of the above excluding orthopedic articles for clamping, supporting and surgical purposes
11.
CORNEAL REFRACTIVE CORRECTION USING A SURFACE TREATMENT AFTER CORNEAL RESHAPING
The present disclosure relates to a system for treating a cornea of a human eye using laser radiation. The system includes a laser system and a control system, which is configured to control the laser system for performing (a) a reshaping laser ablation for ablating a portion of a stroma of the cornea; and (b) a laser surface treatment. The laser surface treatment is a substantially optically non-corrective treatment of a reshaped surface portion. The reshaped surface portion represents a corrective or non-corrective reshaping of an anterior surface of the cornea and is formed using the reshaping laser ablation. A maximum ablation depth of the laser surface treatment is less than (5) micrometers or less than (3) micrometers.
Surgical apparatus and instruments for use in ophthalmic surgery; Ocular implants made of artificial materials; Intraocular lenses; Intraocular prostheses in the nature of lenses for surgical implantation; Holders specially adapted for intraocular lenses; Lenses in the nature of intraocular prosthesis for surgical implantation; Surgical instruments for use in ophthalmic surgery; Surgical apparatus for use in ophthalmic surgery; Optometric instruments for locating the optical center of ophthalmic lenses; Optometric instruments, namely, instruments for measuring the diameter of ophthalmic lenses; Optometric instruments, namely, instruments for locating grooves, engravings and other indicia on ophthalmic lenses; Ophthalmic cameras for medical purposes; Injection instruments without needles for use in ophthalmic surgery; Ophthalmic lasers for surgical and medical use; Pupillometers for measuring pupillary distance; Pupillometers for measuring pupillary reactivity to stimulus; Hand held ophthalmic surgical instruments, namely, aberrometers, topographers, microkeratomes, keratomes, phacoemulsification devices, endoscopes, tonometers and corneal shields; Surgical implants comprised of artificial materials for use in ophthalmic surgery; Medical and surgical knives and cutters for cutting human tissue and organs during ophthalmic surgery; Surgical, ophthalmic, and ocular instruments, apparatus, and devices for use in eye surgery; Eye shields and pads for medical or surgical use; Artificial lenses for implantation in the eye; All of the above excluding orthopedic articles for clamping, supporting and surgical purposes and reperfusion catheters and associated connectors, fittings and adaptors for reperfusion catheters
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.
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.
A system and method for performing a femto-fragmentation procedure on tissue in the crystalline lens of an eye requires that a laser beam be directed and focused to a focal point in the crystalline lens of the eye. The focal point is then guided, relative to an axis defined by the eye, to create a segment cluster by causing Laser Induced Optical Breakdown (LIOB) of tissue in the crystalline lens. The resultant segment cluster includes a plurality of contiguous, elongated segments in the crystalline lens that are individually tapered from an anterior end-area to a posterior end-area. Specifically, this is done to facilitate the removal of individual segments from the segment cluster in the crystalline lens.
A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
A61F 9/008 - Methods or devices for eye surgery using laser
16.
Method and apparatus for calculating a laser shot file for use in an excimer laser
The invention relates to a method and apparatus for calculating a laser shot file for use in an excimer laser comprising the steps of providing information with respect to a desired ablation profile, calculating the shot density of the desired ablation profile, using a cost function for placing laser shots of the excimer laser on grid positions wherein a threshold value is determined based on the calculated shot density of the desired ablation profile.
A61B 18/20 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
A61F 2/14 - Eye parts, e.g. lenses or corneal implantsArtificial eyes
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.
A system and method are provided for fragmenting a crystalline lens inside an operational volume in the lens. A reference axis that is based on the crystalline lens is established, and various pluralities of parallel planes are defined relative to the reference axis. A pulsed laser beam is then used to cut tissue in selected planes, to thereby fragment the lens by performing Laser Induced Optical Breakdown (LIOB) on the tissue. In accordance with the present invention each plurality of parallel planes is characterized by a particular inclination angle "φ" relative to the reference axis, a particular azimuthal angle "ϕ" relative to the reference axis, and an intersection angle "ψ" relative to each other.
An apparatus and method are provided for performing ocular laser surgery using a patient interface having a posterior contact surface that may include surface irregularities that were generated during manufacturing of the patient interface. A beam delivery system having a focusing lens, scanning subsystem and adaptive optic (e.g. deformable mirror) is provided for guiding the surgical laser beam through the patient interface and to a desired focal spot location. An optical detector generates image data representing the posterior patient interface surface which is then processed by a computer system to identify surface irregularities by comparing the image data to a reference surface or axis. In particular, a surface irregularity can be identified as having a z-axis component; a tilt component and a surface profile component. Each irregularity component can be compensated separately by sending an adjustment signal to one of the beam delivery system components.
A system and method for performing a femto-fragmentation procedure on tissue in the crystalline lens of an eye requires that a laser beam be directed and focused to a focal point in the crystalline lens of the eye. The focal point is then guided, relative to an axis defined by the eye, to create a segment cluster by causing Laser Induced Optical Breakdown (LIOB) of tissue in the crystalline lens. The resultant segment cluster includes a plurality of contiguous, elongated segments in the crystalline lens that are individually tapered from an anterior end-area to a posterior end-area. Specifically, this is done to facilitate the removal of individual segments from the segment cluster in the crystalline lens.
A system and method for performing a femto-fragmentation procedure on tissue in the crystalline lens of an eye requires that a laser beam be directed and focused to a focal point in the crystalline lens of the eye. The focal point is then guided, relative to an axis defined by the eye, to create a segment cluster by causing Laser Induced Optical Breakdown (LIOB) of tissue in the crystalline lens. The resultant segment cluster includes a plurality of contiguous, elongated segments in the crystalline lens that are individually tapered from an anterior end-area to a posterior end-area. Specifically, this is done to facilitate the removal of individual segments from the segment cluster in the crystalline lens.
A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
A61F 9/008 - Methods or devices for eye surgery using laser
22.
LASER CONFIGURATION THAT REDUCES THE LASER FOOTPRINT AND IMPROVES ERGONOMICS
A laser system for eye surgery comprises a laser source for emitting a laser beam and a beam delivery means to direct the laser beam to a position where a patient's eye is located. The beam delivery means within a beam delivery arm is arranged at an angle a with respect to the direction of the beam when emitted from the laser source. The angle a is in a range of 105° to 165°, preferably in a range of 115° to 155°, and more preferably the angle a is approximately 135°. The system may comprise a device body in which the laser source may be arranged. The beam delivery means may comprise a beam delivery arm extending to a position above the patient's eye. Preferably, the laser source is arranged to emit the laser beam in a direction from the head to the feet of the patient when being positioned for surgery. That is, the laser beam is emitted in a direction away from an operator of the device.
An interface device for selectively engaging a suction ring with a patient interface of a laser unit includes an annular shaped base member that is formed with an orifice. The suction ring is affixed against one side of the base member to surround the orifice. A grip is mounted on the other side of the base member. Structurally, the grip includes independently manipulated handles that can be operated to symmetrically apply equal and opposite forces against the patient interface of the laser unit during an engagement of the device with the patient interface. With this engagement, the base member and the suction ring are held on the patient interface of the laser unit.
n) between adjacent reference points. Axially-symmetric surfaces can then be traced between selected, adjacent, reference points to create the template. For the present invention, the location of reference points, and the tracing of axially-symmetric surfaces, are based on a cross sectional image of the object for surgery. Preferably, the cross sectional image is obtained using Optical Coherence Tomography (OCT) techniques.
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
A61B 19/00 - Instruments, implements or accessories for surgery or diagnosis not covered by any of the groups A61B 1/00-A61B 18/00, e.g. for stereotaxis, sterile operation, luxation treatment, wound edge protectors(protective face masks A41D 13/11; surgeons' or patients' gowns or dresses A41D 13/12; devices for carrying-off, for treatment of, or for carrying-over, body liquids A61M 1/00)
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/117 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
25.
Surgical laser unit with variable modes of operation
A comprehensive multi-mode system for performing ophthalmic laser surgery on selected tissue inside an eye includes a laser unit for generating and focusing a laser beam to perform Laser Induced Optical Breakdown (LIOB) at a focal point in selected tissue. Also included is a selector for defining an operational mode according to characteristics of the tissue to be altered by LIOB. In combination, the operational mode specifies value ranges for configuration parameters for a pulsed femtosecond laser beam, establishes a base reference datum in the eye, and identifies a scanning procedure for the focal point of the laser beam to customize the system for a particular surgical procedure. A computer that is connected to the laser unit is responsive to the selector for implementing the operational mode.
A comprehensive multi-mode system for performing ophthalmic laser surgery on selected tissue inside an eye includes a laser unit for generating and focusing a laser beam to perform Laser Induced Optical Breakdown (LIOB) at a focal point in selected tissue. Also included is a selector for defining an operational mode according to characteristics of the tissue to be altered by LIOB. In combination, the operational mode specifies value ranges for configuration parameters for a pulsed fem to second laser beam, establishes a base reference datum in the eye, and identifies a scanning procedure for the focal point of the laser beam to customize the system for a particular surgical procedure. A computer that is connected to the laser unit is responsive to the selector for implementing the operational mode.
A methodology is provided for correcting the placement of a laser beam's focal point. Specifically, this correction is done to compensate for displacements of the focal point that may be caused when implant material (e.g. an Intraocular Lens (IOL)) is positioned on the optical path of the laser beam. The methodology of the present invention then determines a deviation of the laser beam's refracted target position (uncompensated) from its intended target position. A calculation of the deviation includes considerations of the laser beam's wavelength and refractive/diffractive characteristics introduced by the implant material. This deviation is then added to the refracted target position to make the refracted target position coincide with the intended target position of the focal point. The laser beam will then focus to its intended target position.
A methodology is provided for correcting the placement of a laser beam's focal point (16). Specifically, this correction is done to compensate for displacements of the focal point (16) that may be caused when implant material (e.g. an Intraocular Lens (IOL) (24)) is positioned on the optical path of the laser beam (13). The methodology of the present invention then determines a deviation of the laser beam's refracted target position (28) (uncompensated) from its intended target position (26). A calculation of the deviation includes considerations of the laser beam's wavelength and refractive/diffractive characteristics introduced by the implant material. This deviation is then added to the refracted target position (28) to make the refracted target position (28) coincide with the intended target position (26) of the focal point (16). The laser beam (13) will then focus to its intended target position (26).
A system for establishing a reference datum inside the eye of a patient includes an imaging unit for generating and directing imaging beams along respective beam paths into the eye. A detector is connected with the imaging unit and is used to identify the location(s) of marked responses on each beam path where the imaging beam intersects a selected interface surface. A computer then organizes the plurality of marked responses into a predetermined subset according to their common intersection with a same interface surface. This predetermined subset is then fitted with a topology of a surface to establish the reference datum.
In accordance with the present invention, a system and method are provided for controlling postoperative shrinkage of the capsular bag, after the lens has been removed from the capsular bag. The purpose is to establish a proper optical alignment for a prosthetic Intraocular Lens (IOL). Included in the system are a laser unit for generating a laser beam, a detector for creating an image of the prosthetic IOL in the capsular bag, and a computer for evaluating the image to determine an alignment difference between the IOL axis and a defined axis of the eye. The computer is also used for guiding the laser beam to alter selected tissue in the eye, to thereby influence postoperative shrinkage of the capsular bag and minimize any potential alignment difference between the IOL axis and the defined axis of the eye during capsular bag shrinkage.
In accordance with the present invention, a system and method are provided for controlling postoperative shrinkage of the capsular bag, after the lens has been removed from the capsular bag. The purpose is to establish a proper optical alignment for a prosthetic Intraocular Lens (lOL). Included in the system are a laser unit for generating a laser beam, a detector for creating an image of the prosthetic lOL in the capsular bag, and a computer for evaluating the image to determine an alignment difference between the lOL axis and a defined axis of the eye. The computer is also used for guiding the laser beam to alter selected tissue in the eye, to thereby influence postoperative shrinkage of the capsular bag and minimize any potential alignment difference between the lOL axis and the defined axis of the eye during capsular bag shrinkage.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Computer hardware with regard to ophthalmological
applications and for medical laser beam control for use with
ophthalmic/ophthalmological and optometric instruments,
equipment and devices for use with medical laser,
intraocular devices or systems for vision
correction/improvement; computer software relating to
ophthalmological applications and for medical laser beam
control for use with ophthalmic/ophthalmological and
optometric instruments, equipment and devices for use with
medical laser, intraocular devices or systems for vision
correction/improvement. Eye surgery systems and equipment, including components and
spare parts for medical lasers; ophthalmic and optometric
equipment, namely refractometer, keratometer,
ophthalmometer, topometer, aberrometer, medical laser for
refractive surgery and corneal surgery; intraocular devices
or systems for vision correction/improvement, intraocular
lenses. Maintenance and repair of computer software relating to
ophthalmic applications for use with
ophthalmic/ophthalmological and optometric instruments,
equipment and devices for use with medical lasers and/or
intraocular devices for vision correction/improvement.
36.
SYSTEM AND METHOD FOR LASER ABLATION ON A SURGICAL SURFACE
A system and method for performing Laser Induced Optical Breakdown (LIOB) on a target tissue includes a detector for imaging the interface surface between the target tissue and a base tissue. Also included is a laser unit for generating a laser beam, and for focusing the laser beam to a focal point. A computer is provided for controlling movement of the focal point. Specifically, this control is accomplished to maintain the focal point in the target tissue, but beyond a predetermined distance from the interface surface. For the present invention, the predetermined distance is established by considerations of laser beam geometry, which are applied in the context of images that are created of the interface surface.
A system and method are provided wherein an operational characteristic of a laser beam is identified. A predetermined ophthalmic reference datum is also identified. The identified laser beam characteristic is then used in its relationship with the reference datum for guidance and control of the laser beam's focal point. In operation, the laser beam's focal point is moved through eye tissue while minimizing any deviations of the operational characteristic of the laser beam from the reference datum.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Computer hardware with regard to ophthalmological applications and for medical laser beam control for use with ophthalmic/ophthalmological and optometric instruments, equipment and devices for use with medical laser, intraocular devices or systems for vision correction/improvement; computer software algorithm for controlling eye surgery systems and equipment used in the fields of ophthalmology and optometry, and for medical laser beam control for use with ophthalmic/ophthalmological and optometric instruments, equipment and devices for use with medical lasers, intraocular devices or systems for vision correction/improvement; eye surgery systems and equipment, namely components and spare parts for medical lasers; ophthalmic and optometric equipment, namely refractometer, keratometer, ophthalmometer, topometer, aberrometer, medical laser for refractive surgery and corneal surgery; intraocular devices or systems for vision correction/improvement, namely, intraocular lenses. (1) Maintenance and repair of computer software relating to ophthalmic applications for use with ophthalmic/ophthalmological and optometric instruments, equipment and devices for use with medical lasers and/or intraocular devices for vision correction/improvement.
39.
APPARATUS AND METHOD FOR MORPHING A THREE-DIMENSIONAL TARGET SURFACE INTO A TWO-DIMENSIONAL IMAGE FOR USE IN GUIDING A LASER BEAM IN OCULAR SURGERY
An apparatus and method for ocular surgery includes a delivery system for generating and guiding a surgical laser beam to a focal point on a target surface in a treatment area of an eye. A detector is coupled to the beam path of the surgical laser to create a three-dimensional image of the target surface, and a computer morphs this three-dimensional image into a two-dimensional image. Operationally, the computer then uses the two-dimensional image to position and move the focal point in the treatment area for surgery.
A61B 3/107 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining the shape or measuring the curvature of the cornea
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A system and method are provided for using multiple detectors to create a frame of reference for performing ophthalmic laser surgery. Anatomical detectors generate data sets and a computer program receives these data sets to create the frame of reference. The frame of reference is then used with a selected procedure for conducting ophthalmic laser surgery. An additional detector can measure refractive data of the eye for use as a data set that will refine the frame of reference.
A61F 9/008 - Methods or devices for eye surgery using laser
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A system and method are provided for fragmenting a crystalline lens, to facilitate its removal from the lens bag during an ophthalmic laser surgery. First, a predetermined pattern is used to make Laser Induced Optical Breakdown (LIOB) cuts that section the lens into asymmetrical, operational segments. At least one operational segment is then selected and softened with a plurality of compact LIOB cuts. Once softened, the selected segment is aspirated. The remaining operational segments are then subsequently removed. During a procedure, an imaging unit can monitor movements of the lens bag to ensure proper placement of the LIOB cuts on the lens.
A system and method are provided for fragmenting a crystalline lens, to facilitate its removal from the lens bag during an ophthalmic laser surgery. First, a predetermined pattern is used to make Laser Induced Optical Breakdown (LIOB) cuts that section the lens into asymmetrical, operational segments. At least one operational segment is then selected and softened with a plurality of compact LIOB cuts. Once softened, the selected segment is aspirated. The remaining operational segments are then subsequently removed. During a procedure, an imaging unit can monitor movements of the lens bag to ensure proper placement of the LIOB cuts on the lens.
A system and method for stabilizing an eye includes a contact element that is placed in contact with the anterior surface of the eye. The purpose here is to oppose movements of the eye during an ophthalmic surgical procedure. Importantly, while it is in contact with the eye, the contact element is positioned to exert minimal pressure on the eye. This is done to avoid causing any deformations of the eye that might otherwise adversely compromise a laser beam during the ophthalmic surgery.
A system and method for performing refractive surgery in an eye requires creating a plurality of cuts in the stroma or the lens that are randomly positioned relative to a reference axis. The geometry for each cut is unique and includes a start point in the stroma that is identified by a distance "r" from the axis, and an azimuthal angle "⊖" that is measured around the axis. A computer provides concerted control for a laser unit and an optical scanner to randomly vary the start point for each cut, to create a pattern of cuts that will implement the desired refractive surgery, yet be visually illusive.
A method for ocular surgery requires use of a delivery system for generating and guiding a surgical laser beam to a focal point in a treatment area of an eye. Additionally, a contact device is employed for using the eye to establish a reference datum. Further, an optical detector is coupled to the beam path of the surgical laser to create a sequence of cross-sectional images. Each image visualizes both the reference datum and the focal point. Operationally, a computer then uses these images to position and move the focal point in the treatment area relative to the reference datum for surgery.
A61B 19/00 - Instruments, implements or accessories for surgery or diagnosis not covered by any of the groups A61B 1/00-A61B 18/00, e.g. for stereotaxis, sterile operation, luxation treatment, wound edge protectors(protective face masks A41D 13/11; surgeons' or patients' gowns or dresses A41D 13/12; devices for carrying-off, for treatment of, or for carrying-over, body liquids A61M 1/00)
A61B 18/20 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
46.
SYSTEM FOR PERFORMING INTRASTROMAL REFRACTIVE SURGERY
A system for performing intrastromal ophthalmic laser surgery requires Laser Induced Optical Breakdown (LIOB) of stromal tissue without compromising Bowman's capsule (membrane). In detail, the system is computer-controlled to create symmetrical cuts in the stroma relative to a defined axis of the eye. Importantly, these cuts are all distanced from the axis. The actual location and number of cuts in the surgery will depend on the degree of visual aberration being corrected. Further, the system may create different types of cuts in the stroma. For example, the symmetrical cuts (by type) may include cylindrical, radial or annular layer cuts. The different type cuts may be intersecting or non-intersecting depending on the visual aberration being treated.
A61B 18/20 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
A system for changing the configuration of a transparent, resilient material, for the purpose of altering its optical properties, requires obtaining a topology for the material. The obtained data is then used to create a computer program for operating a laser unit. In accordance with the program, the laser unit creates incisions within a defined operational volume, inside the material, to weaken the material (i.e. change its internal stress distributions). Specifically, the incisions are made on predetermined surfaces (e.g. cylindrical surfaces) in the operational volume by Laser Induced Optical Breakdown (LIOB). As a consequence of the incisions, the material undergoes the desired configurational change in response to external forces applied on the material.
A61B 18/20 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
The system according to the present invention is used to create an ablation such that the surface of the cornea comprises a central region having a convex central steepening with a first radius of curvature and a surrounding region having a convex shape with a second radius of curvature, wherein the first radius of curvature is smaller than the second radius of curvature for performing a presbyopic correction. The ablation depth in the central region varies between a minimum ablation depth in the center and a maximum ablation depth at the border of the central region. The ablation depth in the surrounding region is the same as the maximum ablation depth at the border of the central region.
A system (10) and method for reshaping the cornea of an eye (16) with a laser that also incorporates a subsequent compensation for residual vision aberrations. A diagnostic unit (14) obtains a pre-op prescription for the eye (16) and predicts an induced refractive shift resulting from laser treatment. Based on this data, a preview lens (22) is selected or manufactured to evaluate the tolerance of a patient (18) to a predicted post-op vision. Then, a laser unit (24) is used to alter the cornea of the eye (16) (i.e. laser treatment) to increase the depth - of - field of the eye (16). Subsequently, after the laser treatment has been completed, conventional vision correction is provided by spectacles, intraocular lenses or contact lenses. This conventional correction will then compensate for any remaining pre-op aberrations, as well as any residual aberrations in the patient's post-op vision that may have been induced during the laser treatment.
09 - Scientific and electric apparatus and instruments
44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services
Goods & Services
Computer hardware, in particular in relation to
ophthalmological applications and for laser beam control;
computer software, in particular in relation to
ophthalmological applications and for laser beam control,
mainly for use with ophthalmological/ophthalmic surgical and
optometric apparatus, namely instruments, equipment and
devices for use with medical lasers, intraocular devices or
systems for sight correction/improvement. Medical, hospital and opticians' services.
09 - Scientific and electric apparatus and instruments
Goods & Services
Computer hardware, in particular for laser beam control in
relation to ophthalmological applications; computer
software, in particular in relation to ophthalmological
applications, mainly for use with
ophthalmological/ophthalmic surgery and optometric
apparatus.
09 - Scientific and electric apparatus and instruments
44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services
Goods & Services
Computer hardware, in particular in relation to
ophthalmological applications and for laser beam control,
mainly for use in the field of cataract surgery and
presbyopia correction; computer software, in particular in
relation to ophthalmological applications and for laser beam
control, mainly for use in the field of cataract surgery and
presbyopia correction and mainly for use with
ophthalmological/ophthalmic surgical and optometric
apparatus, namely, instruments, equipment and devices for
use with medical lasers, intraocular devices or systems for
sight correction/improvement. Medical and hospital services.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
37 - Construction and mining; installation and repair services
Goods & Services
(1) Computer hardware, namely for laser beam control, namely for ophthalmological applications; computer software, namely for ophthalmological applications, namely for use with ophthalmological and ophthalmic surgical and optometric eye laser system.
(2) Systems and apparatus, namely components and spare parts, namely for medical lasers; ophthalmological and optometric equipment, namely refractometers, keratometers, ophthalmometers, topometers, aberrometers, lasers, namely for corneal surgery and refractive surgery; intraocular devices and systems for sight correction and improvement, namely, intraocular lenses. (1) Maintenance and repair of computer hardware, namely ophthalmological applications, namely ophthalmological and ophthalmic surgical and optometric eye laser system; maintenance, repair and servicing of lasers and of apparatus, namely components and spare parts for lasers.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services
Goods & Services
(1) Computer hardware for use in relation to ophthalmological applications and for laser beam control; computer software for laser beam control and for use in the operation of surgical and optometric apparatus, namely medical instruments, equipment and devices relating to medical lasers, intraocular devices and systems for sight correction and improvement. (1) Medical diagnostic, imaging, laboratory and surgery services; hospital and opticians' services.
55.
System for performing intrastromal refractive surgery
A system for performing intrastromal ophthalmic laser surgery requires Laser Induced Optical Breakdown (LIOB) of stromal tissue without compromising Bowman's capsule (membrane). In detail, the system is computer-controlled to create symmetrical cuts in the stroma relative to a defined axis of the eye. Importantly, these cuts are all distanced from the axis. The actual location and number of cuts in the surgery will depend on the degree of visual aberration being corrected. Further, the system may create different types of cuts in the stroma. For example, the symmetrical cuts (by type) may include cylindrical, radial or annular layer cuts. The different type cuts may be intersecting or non-intersecting depending on the visual aberration being treated.
A system and method are provided for minimizing the adverse effects of any optical aberrations, and particularly higher order aberrations, that may be introduced into an eye during the correction of a visual defect by photoablation (i.e. removal) of corneal tissue. In accordance with the present invention, after a predetermined time interval following the photoablation of tissue (e.g. about two weeks), the eye is evaluated for aberrations. Laser Induced Optical Breakdown (LIOB) is then performed on intrastromal tissue, as needed, to correct for the introduced aberrations.
A system and method are provided for an ophthalmic surgical procedure to provide a refractive correction for an eye. Specifically, the procedure is indicated when the desired refractive correction "dreqd" exceeds the capability of a correction achievable when corneal tissue is only ablated. In accordance with the present invention, an optimized refractive correction "d1" is accomplished by the ablation of corneal tissue (e.g. by a PRK or LASIK procedure). The optimized correction is then followed by a complementary refractive correction "d2" wherein stromal tissue is weakened with Laser Induced Optical Breakdown (LIOB). Together, the optimized refractive correction (ablation) and the complementary refractive correction (LIOB) equal the desire refractive correction (dreqd = d1 + d2).
A method for correcting higher order aberrations in an eye requires Laser Induced Optical Breakdown (LIOB) of stromal tissue. In detail, the method identifies at least one volume of stromal tissue in the eye, with each volume defining a central axis parallel to the visual axis of the eye. Thereafter, a pulsed laser beam is focused to a focal spot in each volume of stromal tissue to cause LIOB of stromal tissue at the focal spot. Further, the focal spot is moved through the volume of stromal tissue to create a plurality of incisions centered about the respective central axis of the volume. As a result, a predetermined selective weakening of the stroma is caused for correction of the higher order aberration.
A system and method for correcting a vision defect (i.e. presbyopia) of a patient requires two laser units. A first laser unit is used to photoablate (i.e. remove) tissue from the cornea for the creation of a multi-focal cornea that simultaneously provides for both near and distance vision capabilities. A second laser unit can also be used to refine the shape of the cornea by weakening selected portions with LIOB. Together, the removal and weakening of corneal tissue are regulated to optimize the resultant near vision and distant vision capabilities of the patient.
A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
61.
MINIMIZING THE SIDE-EFFECTS OF REFRACTIVE CORRECTIONS USING STATISTICALLY DETERMINED IRREGULARIITIES IN THE INTRASTROMAL INCISIONS
A system and method for minimizing adverse visual effects that may be introduced during laser refractive surgery, requires making laser incisions into stromal tissue in a predetermined manner. Specifically, a plurality of irregular incisions are statistically distributed in the stroma in a manner that causes them to be visually elusive, and thereby minimize their adverse visual effects. The incisions must, however, still accomplish their intended surgical purpose of weakening the stroma in a predetermined manner. To do this, each irregular incision has a width of arc length dθm, a length dzi and a characteristic radial distance drn from the visual axis of the eye. Values for dθm, dzi and drn are established using a random number generator.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
42 - Scientific, technological and industrial services, research and design
44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services
Goods & Services
Computer hardware, in particular in relation to ophthalmological applications and for laser beam control, mainly for use in the field of cataract surgery and presbyopia correction; computer software, in particular in relation to ophthalmological applications and for laser beam control, mainly for use in the field of cataract surgery and presbyopia correction and mainly for use with ophthalmological/ophthalmic surgical and optometric apparatus, namely instruments, equipment and devices for use with medical lasers, intraocular devices or systems for sight correction/improvement. Surgical, medical, dental and veterinary apparatus and instruments, in particular systems and equipment, including components and spare parts for medical lasers; ophthalmological and optometric equipment, in particular refractometers, keratometers, ophthalmometers, topometers, aberrometers, medical lasers, mainly for refractive surgery, corneal surgery, cataract surgery and presbyopia correction; intraocular devices or systems for sight correction/improvement, intraocular lenses; artificial limbs, eyes and teeth; orthopaedic articles, suture materials. Maintenance, repair and servicing of computer software, in particular in relation to ophthalmological applications, mainly for use with ophthalmological/ophthalmic surgical and optometric apparatus, namely instruments, equipment and devices for use with medical lasers and/or intraocular devices for sight correction/improvement (the aforesaid services included in class 42). Medical and hospital services.
63.
METHOD AND APPARATUS FOR ENHANCED CORNEAL ACCOMMODATION
A system and method for improving the accommodative power of a focusing unit (e.g. an eye) involves increasing the flexibility of a first optical element in the unit (e.g. the cornea of the eye). Specifically, the needed flexibility is determined from diagnostic data, and the first optical element is structurally weakened according to the data. With this weakened structure (i.e. increased flexibility), the first element is better able to comply with configuration changes in a second optical element in the focusing unit (e.g. the lens of the eye). The consequence is, improved accommodation. For the present invention, the improved compliance to achieve optimal accommodation is accomplished either by performing appropriate LIOB on stromal tissue in the eye, or by application of a topical medium to selected areas on the anterior surface of the eye.
The invention relates to an apparatus, an algorithm and a method for providing a laser shot file for use in a laser. The laser may be an excimer laser. The shot file may be applied for performing a refractive laser treatment of an eye or for producing a customized contact lens or an intraocular lens. According to the invention information with respect to a desired ablation profile is provided and a first series of laser shot positions is calculated based on the desired ablation profile. A simulated ablation profile is generated using said first series of laser shot positions and using information about pulse characteristics of a single laser shot. The simulated ablation profile is compared with the desired ablation profile and residual structures are determined.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
42 - Scientific, technological and industrial services, research and design
44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services
Goods & Services
Computer hardware, in particular in relation to ophthalmological applications and for laser beam control; computer software, in particular in relation to ophthalmological applications and for laser beam control, mainly for use with ophthalmological/ophthalmic surgical and optometric apparatus, namely instruments, equipment and devices for use with medical lasers, intraocular devices or systems for sight correction/improvement. Surgical, medical, dental and veterinary apparatus and instruments, in particular systems and equipment, including components and spare parts for medical lasers; ophthalmological and optometric equipment, in particular refractometers, keratometers, ophthalmometers, topometers, aberrometers, medical lasers, mainly for refractive surgery and corneal surgery; intraocular devices or systems for sight correction/improvement, intraocular lenses; artificial limbs, eyes and teeth; suture materials. Maintenance, repair and servicing of computer software, in particular in relation to ophthalmological applications, mainly for use with ophthalmological/ophthalmic surgical and optometric apparatus, namely instruments, equipment and devices for use with medical lasers and/or intraocular devices for sight correction/improvement (the aforesaid services included in class 42). Medical, hospital and opticians' services.
A system and method are provided for reshaping the surface of a resilient transparent material such as a cornea. In the system, a laser unit generates a femto-second laser beam to deliver focused energy inside the material. Specifically, the energy is focused over a defined spot pattern to weaken the material. Further, the system includes a contact element that forms a contour surface. In order to reshape the material, the system provides for holding the contour surface of the contact element against the surface of the weakened material. After holding the contour surface against the material for a pre-determined time duration, the surface of the material is reshaped with a desired configuration that substantially mimics the contour surface of the contact element.
A61F 9/00 - Methods or devices for treatment of the eyesDevices for putting in contact-lensesDevices to correct squintingApparatus to guide the blindProtective devices for the eyes, carried on the body or in the hand
A refractive surgical system, comprising a refractive treatment apparatus adapted to alter multiple localized regions of a cornea and an ophthalmic measurement device adapted to measure a corneal shape parameter at at least two locations on the cornea. A corneal modeling apparatus comprising a processor adapted to calculate anticipated corneal shape parameters at two or more locations based on parameters of a refractive treatment, and the processor adapted to compare shape parameters measured at two or more locations on a cornea to the anticipated corneal shape parameters, the two or more locations on the cornea corresponding to the two or more locations of the anticipated corneal shape parameters.
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/103 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
A61B 3/107 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining the shape or measuring the curvature of the cornea
The invention relates to an apparatus and a method for providing data for vision correction utilizing a volumetric ablation and an intrastromal manipulation. The provided data may be used by a laser ablating the surface of the cornea in combination with a laser which operates intrastromal to optimize a corneal re-shaping procedure. One aspects of the invention relates to the minimization of the amount of corneal tissue to be removed.
A system and method for simulating a corneal reconfiguration in response to laser surgery uses a computer-programmed, biomechanical generalized model. The generalized model has a plurality of elements; with each element being pre-programmed based on diagnostic corneal data obtained from images of respective individual collagen fibers in a cornea. Collectively these pre-programmed elements replicate biomechanical properties of the cornea. In use, designated biomechanical characteristics on a plurality of selected elements are minimized to simulate laser surgery in an actual cornea. A computer then measures the resultant reconfiguration of the cornea model to assess an actual cornea's response to laser surgery.
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
The invention relates to an apparatus and a method for determining the applicability of a treatment pattern for manipulation of a cornea of an eye using a laser. The concept of the present invention is based on the determination of an actual volumetric profile based on a set of input data and a theoretical volumetric profile which is created independently based on only the basic optical parameters. On the basis of a comparison of the determined volumetric profiles it is determined whether the actual volumetric profile is within predetermined tolerances.
A system and method for reshaping and altering the cornea of an eye employs a laser beam for two different purposes. For one, the laser beam is configured to perform Laser Induced Optical Breakdown (LIOB ) on selected tissue in the stroma of the cornea. This generally weakens the stromal tissue and allows intraocular pressure and bio-mechanical forces in the eye to reshape the cornea. For the other, the laser beam is configured to cause Permanent Structural Change (PSC) on selected tissue in the stroma of the cornea. This alters the tissue density of the selected PSC stromal tissue to change its refractive index. In combination, the LIOB and PSC provide for corrected vision.
A system and method to compensate for the deformation of an eye requires calculation of an induced deformation angle Ψ, wherein the deformation is intentionally induced during laser surgery by a contact lens, and a refraction angle φ. Specifically, during laser surgery, the cornea of an eye is typically stabilized by a contact lens. This deforms the cornea. When the contact lens is removed after the surgery, the cornea recovers from the deformation. For the present invention, the angle Ψ is calculated, and corrected by the angle φ, so that surfaces altered during surgery (e.g. by LIOB) will become substantially parallel to incoming light in the eye, after the contact lens has been removed after surgery.
A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
A61F 9/008 - Methods or devices for eye surgery using laser
73.
System and method for altering internal stress distributions to reshape a material
A system and method for altering the configuration of a transparent material (e.g. the cornea of an eye) requires identifying local stress distribution patterns inside the material. These patterns are then used to define boundary (interface) surfaces between volumes within the material. In operation, a laser unit performs Laser Induced Optical Breakdown (LIOB) along selected boundary surfaces to disrupt stress distribution patterns between volumes of the material that are separated from each other by the boundary surface. This LIOB allows an externally applied force to thereby alter the configuration of the material.
A system and method for altering the shape of a lamina of transparent material (e.g. the cornea of an eye), as it is being subjected to a transverse pressure differential, requires a computer controlled laser unit. In accordance with specified input parameters, the computer directs the laser unit to perform LIOB over predetermined surfaces within the lamina. This weakens the material for a desired reshaping of the lamina in response to the pressure differential. With respect to a perpendicular axis that is defined by the lamina, surfaces parallel to the axis (e.g. cylindrical surfaces) are separated from each other by about two hundred microns. For surfaces perpendicular to the axis, the separation is about ten microns. In each instance, the cuts that result from LIOB are only about two microns thick.
A61B 18/20 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
A system and method for simulating a corneal reconfiguration in response to LIOB uses a computer-programmed, finite element model. The model has a plurality of elements; with each element pre-programmed with coefficients based on diagnostic corneal data. Collectively the coefficients replicate biomechanical properties of the cornea. In use, designated biomechanical characteristics on a plurality of selected elements (i.e. selected coefficients) are minimized to simulate LIOB in an actual cornea. A computer then measures the resultant reconfiguration of the cornea model to assess an actual cornea's response to LIOB.
Described is a laser unit for performing intrastromal ophthalmic laser surgery comprising means for generating a pulsed laser beam, means for directing and focusing the beam onto a series of focal spots in the stroma for Laser Induced Optical Breakdown (LIOB) of stromal tissue at each focal spot and means for moving the focal spot in the stroma to create a pattern of radial cuts. The radial cuts can be made coplanar with the visual axis and are located in the stroma within less than approximately 0.9T from an anterior surface of the eye, and the anterior end of each radial cut is located in the stroma more than eight microns in a posterior direction from Bowman's capsule and have a thickness of approximately two microns.
A method for performing intrastromal ophthalmic laser surgery requires Laser Induced Optical Breakdown (LIOB) of stromal tissue without compromising Bowman's capsule (membrane). In detail, the method creates cuts in the stroma over all, or portions of, a plurality of concentric cylindrical surfaces (circular or oval). Importantly, these cuts are all centered on the visual axis of the patient's eye. In accordance with the present invention, cuts can be made either alone or in conjunction with the removal of predetermined volumes of stromal tissue. The actual location of cuts in the surgery will depend on whether the treatment is for presbyopia, myopia, hyperopia or astigmatism.
The invention relates to an apparatus and a method for determining the energy of a laser. In particular, the invention relates to an initial determination of a laser energy and the monitoring of the laser energy preferably of an excimer laser for use in a refractive laser system for treatment of any eye. An apparatus for determining an energy of an excimer laser comprises a tool comprising an area being ablated with a plurality of laser pulses of said excimer laser using at least one predetermined multi spot ablation pattern, said ablation area comprising a specific ablation area being as large as the ablation area or smaller, an image capturing means for capturing at least one image comprising at least said specific ablation area of the tool; an analyzing means for analyzing said at least one image, wherein the size of the specific ablation area provides a measure of the energy of the excimer laser.
G01J 1/42 - Photometry, e.g. photographic exposure meter using electric radiation detectors
A61F 9/00 - Methods or devices for treatment of the eyesDevices for putting in contact-lensesDevices to correct squintingApparatus to guide the blindProtective devices for the eyes, carried on the body or in the hand
A61B 18/20 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
A method for performing intrastromal ophthalmic laser surgery requires Laser Induced Optical Breakdown (LIOB) of stromal tissue without compromising Bowman's capsule (membrane). In detail, the method creates cuts in the stroma along planes radiating from the visual axis of the eye. Importantly, these cuts are all distanced from the visual axis. The actual location and number of cuts in the surgery will depend on the degree of visual aberration being corrected. Further, the method may include the additional step of creating cylindrical cuts in the stroma. The radial cuts and cylindrical cuts may be intersecting or non-intersecting depending on the visual aberration being treated.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Computer hardware, in particular in relation to ophthalmological applications and for laser beam control; computer software, in particular in relation to ophthalmological applications and for laser beam control, mainly for use with ophthalmologic/ophthalmic surgery and optometric apparatus, namely instruments, equipment and devices for use with medical lasers, intraocular devices or systems for vision correction/enhancement. Surgical, medical, dental and veterinary apparatus and instruments, in particular systems and equipment, including components and spare parts for medical lasers; ophthalmological and optometric apparatus, in particular refractometers, kerameters, ophthalmometers, topometers, aberrometers, medical lasers, mainly for refractive surgery and corneal eye surgery; intraocular devices or systems for sight correction/improvement, intraocular lenses; artificial limbs, eyes and teeth; orthopaedic articles, suture materials. maintenance and repair of computer hardware, in particular in relation to ophthalmological applications; maintenance and repair of lasers and of apparatus, including components and spare parts for lasers (the aforesaid services included in class 37). Maintenance and repair of computer software, in particular in relation to ophthalmological applications, mainly for use with ophthalmologic/ophthalmic surgery and optometric apparatus, namely instruments, equipment and devices for use with medical lasers and/or intraocular devices for vision correction/improvement (the aforesaid services included in class 42).
A blade holder (16) includes a bottom surface (18) for attachment to a blade (30). A top surface (20) interfaces with a drive-pin (32) of a microkeratome (38). A drive slot (22) is formed in the top surface (20) for engagement with the drive-pin (32) for allowing oscillation of the blade holder (16). A plurality of steps (24) are formed in the top surface (20), and rise from the drive slot (22) toward at least one side (26) of the blade holder (16).
The invention relates to a system and a method for the treatment of a patient's eye. The system comprises a laser apparatus, a scanning apparatus and an eye tracking apparatus for determining the actual position of the patient's eye and for generating alignment data of the patient's eye relative to a reference position of the patient's eye to the laser, said eye tracking apparatus being provided with a desired treatment shot file. Said scanning apparatus is connected via a first bidirectional bus to the eye tracking apparatus, said laser apparatus is connected via a second bidirectional bus to the eye tracking apparatus. The eye tracking apparatus adjusts the position data for each shot based on said alignment data of the patient's eye and provides aiming control signals representative of the target position data to the scanning apparatus for said shot via said first bidirectional bus. The eye tracking apparatus comprises a comparator for comparing the target position data with the actual position data provided by the scanning apparatus for the shot to be fired. Moreover, said eye tracking apparatus is sending a command signal to the laser apparatus via said second bidirectional bus for firing the shot when the target position data is equal to the actual position data of the scanning apparatus for the shot to be fired.
A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
83.
System and method for precise beam positioning in ocular surgery
A system and method for ocular surgery includes a delivery system for generating and guiding a surgical laser beam to a focal point in a treatment area of an eye. Additionally, a contact device is employed for using the eye to establish a reference datum. Further, an optical detector is coupled to the beam path of the surgical laser to create a sequence of cross-sectional images. Each image visualizes both the reference datum and the focal point. Operationally, a computer then uses these images to position and move the focal point in the treatment area relative to the reference datum for surgery.
A61B 18/20 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
84.
SYSTEM AND METHOD FOR PRECISE BEAM POSITIONING IN OCULAR SURGERY
A system and method for ocular surgery includes a delivery system for generating and guiding a surgical laser beam (13) to a focal point (20) in a treatment area of an eye (22). Additionally, a contact device (24) is employed for using the eye to establish a reference datum. Further, an optical detector (32) is coupled to the beam, path of the surgical laser (12) to create a sequence of cross-sectional images. Each image visualizes both the reference datum and the focal point (20). Operationally, a computer (34) then uses these images- to position and move the focal point (20) in the treatment area relative to the reference datum for surgery.
A61F 9/008 - Methods or devices for eye surgery using laser
A61F 9/009 - Auxiliary devices for making contact with the eyeball and coupling-in laser light
A61B 3/113 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining or recording eye movement
Surgical, medical, dental and veterinary apparatus and
instruments; artificial limbs, eyes and teeth; ophthalmic,
ocular and eye related implants, apparatus and instruments;
intraocular lenses; intraocular lens inserters; intraocular
lens implants; intraocular implants; holders for intraocular
lenses; lenses (intraocular prostheses) for surgical
implantation; medical, surgical and microsurgical apparatus,
instrumentation and devices for use in ophthalmic, ocular,
and eye-related procedures; ophthalmic, ocular, and
eye-related surgical instruments, apparatus and devices;
medical and surgical apparatus, instruments, and devices
used in diagnosing eye conditions and performing ophthalmic,
ocular and eye-related surgical procedures, and component
parts thereof; surgical apparatus, instruments and devices
used to inject intraocular lenses; medical, surgical,
ophthalmic, ocular, refractive, and eye-related lasers (for
medical and surgical use); lasers for ophthalmic purposes;
surgical and medical apparatus and instruments incorporating
lasers; surgical, ophthalmic, and ocular instruments and
apparatus for use in following and measuring the rotation
and movement of the eye; aberrometers, microkeratomes,
keratomes and blades, phacoemulsification devices, hand held
ophthalmic surgical instruments, endoscopes, tonometers and
corneal shields; implantable medical devices; knives and
cutters for surgical use and purposes; surgical, ophthalmic,
and ocular instruments, apparatus, and devices for use in
eye surgery; apparatus and instruments for non-invasive
surgery; eye shields and pads for medical or surgical use;
artificial lenses for implantation in the eye; corneal
topographers.
Ophthalmic, ocular and eye related implants, apparatus and
instruments; intraocular lenses; intraocular lens inserters;
intraocular lens implants; intraocular implants; holders for
intraocular lenses; lenses (intraocular prostheses) for
surgical implantation; medical, surgical and microsurgical
apparatus, instrumentation and devices for use in
ophthalmic, ocular, and eye-related procedures; ophthalmic,
ocular, and eye-related surgical instruments, apparatus and
devices; medical and surgical apparatus, instruments, and
devices used in diagnosing eye conditions and performing
ophthalmic, ocular and eye-related surgical procedures, and
component parts thereof; surgical apparatus, instruments and
devices used to inject intraocular lenses; medical,
surgical, ophthalmic, ocular, refractive, and eye-related
lasers (for medical and surgical use); lasers for ophthalmic
purposes; surgical and medical apparatus and instruments
incorporating lasers; surgical, ophthalmic, and ocular
instruments and apparatus for use in following and measuring
the rotation and movement of the eye; aberrometers,
topographers, microkeratomes, keratomes and blades,
phacoemulsification devices, hand held ophthalmic surgical
instruments, endoscopes, tonometers and corneal shields;
implantable medical devices; knives and cutters for surgical
use and purposes; surgical, ophthalmic, and ocular
instruments, apparatus, and devices for use in eye surgery;
apparatus and instruments for non-invasive surgery; eye
shields and pads for medical or surgical use; artificial
lenses for implantation in the eye; excluding orthopedic
articles for clamping, supporting and surgical purposes.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
37 - Construction and mining; installation and repair services
Goods & Services
Computer hardware, in particular for laser beam control in relation to ophthalmological applications; computer software, in particular in relation to ophthalmological applications, mainly for use with ophthalmological/ophthalmic surgery and optometric apparatus. Systems and apparatus, including components and spare parts, mainly for medical lasers; ophthalmological and optometric equipment, in particular refractometers, keratometers, ophthalmometers, topometers, aberrometers, lasers, mainly for corneal surgery and refractive surgery; intraocular devices or systems for sight correction/improvement, intraocular lenses. Maintenance and repair of computer hardware, in particular in relation to ophthalmological applications; maintenance, repair and servicing of lasers and of apparatus, including components and spare parts for lasers (the aforesaid services included in class 37).
(1) Lasers for ophthalmic purposes, surgical and optical instruments incorporating lasers; surgical, ophthalmic and ocular instruments and apparatus for use in following and measuring the rotation and movement of the eye.
89.
METHOD AND APPARATUS FOR CALCULATING A LASER SHOT FILE FOR USE IN AN EXCIMER LASER
The invention relates to a method and apparatus for calculating a laser shot file for use in an excimer laser comprising the steps of providing information with respect to a desired ablation profile, calculating the shot density of the desired ablation profile, using a cost function for placing laser shots of the excimer laser on grid positions wherein a threshold value is determined based on the calculated shot density of the desired ablation profile.
A system for using a pulsed laser beam to process materials includes a selector for varying the pulse repetition rate of the laser beam. Also included is a control unit for identifying an optimal pulse repetition rate that is compatible with the required pulse energy level for processing the material. Variations in the pulse repetition rate can be made during a procedure pursuant to either pre-programmed instructions, or in response to closed loop feedback controls.
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Computer hardware, in particular in relation to ophthalmological applications; computer software, in particular in relation to ophthalmological applications, mainly for use with ophthalmologic/ophthalmic surgery and optometric apparatus, namely instruments, equipment and devices for use with medical lasers, intraocular devices or systems for vision correction/enhancement. Systems and apparatus, including components and replacement parts for medical lasers; ophthalmological and optometric apparatus, in particular refractometers, kerameters, ophthalmometers, topometers, aberrometers, medical lasers, mainly for refractive surgery; intraocular devices or systems for correcting/improving vision, intraocular lenses. Maintenance and repair of computer hardware, in particular in relation to ophthalmological applications; maintenance and repair of apparatus, including components and spare parts for medical lasers (the aforesaid services included in class 37). Maintenance and repair of computer software, in particular in relation to ophthalmological applications, mainly for use with ophthalmologic/ophthalmic surgery and optometric apparatus, namely instruments, equipment and devices for use with medical lasers and/or intraocular devices for vision correction/improvement (the aforesaid services included in class 42).
A system for positioning the eye of a patient in alignment with a laser unit for laser surgery includes an alignment device that is mounted on the laser unit. It also includes a patient interface having a curved contact lens. Additionally, a clamp with an attached suction ring can be engaged with the interface to hold the lens against the eye of the patient. Thus, when the interface is joined with the alignment device, the lens is positioned against the eye of the patient at a predetermined distance from the laser unit for laser surgery.
A61B 18/20 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
93.
Devices and methods for separating layers of materials having different ablation thresholds
A method and device for photoablation is disclosed wherein photoablation occurs along the interface between a material having a lower energy ablation threshold and a material having a higher energy ablation threshold. The method and device utilize a laser beam having a beam energy density which is less than the higher energy ablation threshold and greater than or equal to the lower energy ablation threshold. By directing such a laser beam to the interface, the material having the lower energy threshold is photoablated while the material having the higher energy threshold is largely unaffected.
A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
94.
Device and method for aligning an eye with a surgical laser
A device for establishing a desired alignment between a patient's eye and a laser system to facilitate an engagement therebetween includes a light source to illuminate the eye. A moveable platform is provided to move the patient relative to the laser system. To establish alignment between the eye and the laser system, a reference marker is based on the laser system. An image of the marker, along with reflections from the illuminated eye, is then transmitted to the system controller. There, the image and reflections are processed to determine a measured alignment that is then compared to the desired alignment. An error signal that is indicative of an alignment difference is then generated and used to incrementally move the platform, or the patient, in an appropriate direction.
A method for photodisrupting a preselected subsurface volume of corneal tissue to alter a cornea's refractive properties is disclosed. Specifically, at least one stromal volume having a substantially conical shaped surface is photodisrupted. For this purpose, a laser device having a laser source, laser scanner and one or more optical elements is typically used. In one embodiment, a plurality of stromal volumes, with each stromal volume having a substantially conical shaped surface, is sequentially photodisrupted to form a contiguous stromal cavity. In a particular implementation, each conical shaped surface defines a cone axis that is aligned to be co-linear with a reference axis that passes through the anterior surface of the eye and may be aligned orthogonally to the anterior surface of the eye.
3” from the first focal spot. This process is then continued with another plurality of interim focal spots being generated within another time period “τ”.
A system for performing a corneal transplantation includes a laser source for generating a laser beam and a chair for positioning a patient relative to the laser source. A stabilizing element, engageable with the laser source, is fixated on the anterior surface of the patient's cornea to hold the cornea in alignment with the laser source. The laser source is then used to remove diseased tissue from the cornea of the patient, thereby creating a corneal cavity of known dimensions. In a subsequent step, a donor graft that was previously photoaltered to have substantially the same dimensions as the corneal cavity, is transplanted into the corneal cavity.
A method is disclosed for photodisrupting a surface in the stroma of an eye at a substantially constant distance from the anterior surface of the eye. A frame of reference is established for the eye that includes an axis of rotation. Next, the focal point of a laser beam is positioned in the stroma at a radial distance from the axis. At least one laser pulse is delivered to the stromal tissue at the focal point, photodisrupting the tissue there and creating a photodisruption bubble having a diameter “d”. The focal point is then rotated about the axis through an arc length substantially equal to “d” and the photodisruption step is repeated. During rotation, the distance between the focal point and the axis is decreased at a rate substantially equal to the distance “d” per revolution. The method can be used to create a flap for a LASIK type procedure.
A61B 18/20 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Computer hardware, in particular in relation to ophthalmological applications; computer software, in particular in relation to ophthalmological applications, mainly for use with ophthalmologic/ophthalmic surgery and optometric apparatus, namely instruments, equipment and devices for use with medical lasers, intraocular devices or systems for vision correction/enhancement. Systems and apparatus, including components and replacement parts for medical lasers. Maintenance and repair of computer hardware, in particular in relation to ophthalmological applications; maintenance and repair of apparatus, including components and spare parts for medical lasers (the aforesaid services included in class 37). Maintenance and repair of computer software, in particular in relation to ophthalmological applications, mainly for use with ophthalmologic/ophthalmic surgery and optometric apparatus, namely instruments, equipment and devices for use with medical lasers and/or intraocular devices for vision correction/enhancement (the aforesaid services included in class 42).
A device and method for steering a laser beam to a focal point in target tissue requires generating a laser beam. Diversions of the laser beam from a central beam path are minimized by a sequential arrangement of optical steering components. In order, the beam is first directed to the center of a z-scanning apparatus which will move the focal point in the medium in a z-direction. The beam is then passed to the center of a first galvanometric mirror which introduces focal point movements in the x-direction. A second galvanometric mirror then compensates for the x-direction movement by redirecting the beam to the center of a third galvanometric mirror where focal point movements in the y-direction are introduced.
B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
B23K 26/08 - Devices involving relative movement between laser beam and workpiece
B23K 26/16 - Removal of by-products, e.g. particles or vapours produced during treatment of a workpiece
G02B 26/12 - Scanning systems using multifaceted mirrors
H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H01S 3/121 - Q-switching using intracavity mechanical devices
