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1. WO2022043921 - POSTERIOR CORNEAL SURFACE MAPPING AND DEEP LAMELLAR CORNEAL INCISION PARALLEL TO POSTERIOR CORNEAL SURFACE

Publication Number WO/2022/043921
Publication Date 03.03.2022
International Application No. PCT/IB2021/057842
International Filing Date 26.08.2021
IPC
A61F 9/008 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
007Methods or devices for eye surgery
008using laser
A61F 9/009 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
007Methods or devices for eye surgery
008using laser
009Auxiliary devices for making contact with the eyeball and coupling-in laser light
CPC
A61F 2009/00844
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
007Methods or devices for eye surgery
008using laser
00844Feedback systems
A61F 2009/00872
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
007Methods or devices for eye surgery
008using laser
00861adapted for treatment at a particular location
00872Cornea
A61F 2009/00882
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
007Methods or devices for eye surgery
008using laser
00878Planning
00882based on topography
A61F 2009/00897
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
007Methods or devices for eye surgery
008using laser
00897Scanning mechanisms or algorithms
A61F 9/00831
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
007Methods or devices for eye surgery
008using laser
00825for photodisruption
00831Transplantation
A61F 9/00836
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
007Methods or devices for eye surgery
008using laser
00825for photodisruption
00836Flap cutting
Applicants
  • AMO DEVELOPMENT, LLC [US]/[US]
Inventors
  • FU, Hong
  • RAHAMAN, Mohammad Saidur
  • MALEK TABRIZI, Alireza
  • WITOWSKI, Zenon
  • ALTMANN, Griffith
Agents
  • SHIRTZ, Joseph F.
  • SHARMA, Sanjesh P.
Priority Data
63/072,06628.08.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) POSTERIOR CORNEAL SURFACE MAPPING AND DEEP LAMELLAR CORNEAL INCISION PARALLEL TO POSTERIOR CORNEAL SURFACE
(FR) CARTOGRAPHIE DE LA SURFACE CORNÉENNE POSTÉRIEURE ET INCISION LAMELLAIRE CORNÉENNE PROFONDE PARALLÈLE À LA SURFACE CORNÉENNE POSTÉRIEURE
Abstract
(EN) 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.
(FR) La présente invention concerne un procédé de formation d’une incision lamellaire cornéenne profonde parallèle à la surface cornéenne postérieure lorsque l’œil est fixé à l’interface patient. Un faisceau de détection d’énergie inférieure généré par le même laser pulsé qui génère le faisceau laser de traitement d’énergie supérieure est utilisé pour mesurer le profil de la surface cornéenne postérieure. Le faisceau de détection est balayé dans l’œil selon un premier profil de balayage tridimensionnel, tandis que l’intensité de la lumière reflétée en arrière est mesurée par un détecteur d’intensité de lumière. Le premier profil de balayage peut être un profil en spirale dans le plan X-Y couplé à une fonction d’oscillation de sens Z. Les pics du signal d’intensité de lumière sont détectés, et les positions spatiales correspondantes du point focal sont obtenues ; une distance de décalage connue est ajoutée à la valeur de profondeur pour obtenir le profil de la surface cornéenne postérieure. Sur la base de celle-ci, le faisceau laser de traitement est balayé dans l’œil pour former l’incision lamellaire cornéenne profonde.
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