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公开(公告)号:US11945895B2
公开(公告)日:2024-04-02
申请号:US17199158
申请日:2021-03-11
Applicant: Alcon Inc.
Inventor: Yuan Chang , Junhao Ge , Steve Yun Zhang , Weihong Lang
IPC: C08F283/12 , C08G77/06 , C08G77/388 , C08G77/442 , C08L83/08 , C08L83/12 , C09K9/02 , G02B1/04
CPC classification number: C08F283/124 , C08G77/06 , C08G77/388 , C08G77/442 , C08L83/08 , C08L83/12 , C09K9/02 , G02B1/043 , C08G2210/00 , C08L2312/06 , C09K2211/1088 , G02B2207/109
Abstract: The invention provides a class of photochromic polydiorganosiloxane vinylic crosslinkers. Each of the photochromic polydiorganosiloxane vinylic crosslinkers of the invention comprise (1) a polydiorganosiloxane polymer chain comprising dimethylsiloxane units and photochromic siloxane unit having one methyl substituent and one organic substituent having a photochromic moiety that capable of undergoing a reversible color change upon exposure to UV-irradiation or high-energy-violet light; (2) two terminal ethylenically-unsaturated groups. The invention also provides a soft photochromic contact lens, especially a photochromic silicone hydrogel contact lens, which comprises a crosslinked polymeric material comprising repeating units of at least one of such a class of photochromic polydiorganosiloxane vinylic crosslinkers. The invention further provides a method of producing a photochromic contact lens from a polymerizable composition comprising at least one of such a class of photochromic polydiorganosiloxane vinylic crosslinkers.
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公开(公告)号:US11945181B2
公开(公告)日:2024-04-02
申请号:US17512431
申请日:2021-10-27
Applicant: Alcon Inc.
Inventor: Junhao Ge , Yuan Chang , Steve Yun Zhang , Michelle Plavnik , Augustine Twum Kumi , Daqing Wu
IPC: B29D11/00 , C08F230/08 , G02C7/04 , G02C7/10 , B29K33/00 , B29K83/00 , B29K105/00
CPC classification number: B29D11/00653 , B29D11/00076 , B29D11/00134 , C08F230/08 , G02C7/04 , G02C7/102 , B29K2033/26 , B29K2083/00 , B29K2105/0002 , B29K2105/0061 , B29K2823/10 , B29K2995/0046 , B29K2995/0065
Abstract: Described herein is a method for producing photochromic silicone hydrogel contact lenses in a relatively efficient and consistent manner from a polymerizable composition under a controlled thermal curing scheme. The main polymerizable components in the polymerizable composition are a high radical-reactive hydrophilic (meth)acrylamido monomer, a high radical-reactive siloxane-containing (meth)acrylamido monomer, and a polysiloxane vinylic crosslinker(s) free of low-reactive ethylenically unsaturated group as the main crosslinker. The thermal free radical initiator having a 10 hour half-life temperature (T10hλ) of from about 50° C. to about 90° C. The controlled thermal curing scheme includes maintaining a first curing temperature of from about (T10hλ−20)° C. to about T10hλ° C. for a first curing time and maintaining a second curing temperature of from about (T10hλ+10)° C. to about (T10hλ+35)° C. for a second curing time.
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公开(公告)号:US20240094618A1
公开(公告)日:2024-03-21
申请号:US18464074
申请日:2023-09-08
Applicant: Alcon Inc.
Inventor: Douglas Allen , Eric Aspnes
CPC classification number: G03B35/10 , A61B90/361 , G02B15/14
Abstract: The present disclosure generally relates to optical systems for surgical procedures, and more particularly, to optical relay systems for visualization systems used during ophthalmic microsurgical procedures. The optical systems described herein provide improved ergonomics for surgeons, as such systems facilitate a low-height microscope camera that enables a surgeon to see over the camera to a display screen or other monitor placed in an ergonomically advantageous position for ophthalmic procedures. Such optical systems also provide improved performance, as the total magnification of the optical head may be split between multiple lens barrels, thereby creating high resolution images that enables surgeons to see ophthalmic anatomies more clearly. Even further, such optical systems proffer improved manufacturability, with reduced weight and manufacturing cost, as the lens barrels may have fixed focal lengths for utilization with digital magnification mechanisms.
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公开(公告)号:US11930902B2
公开(公告)日:2024-03-19
申请号:US17174426
申请日:2021-02-12
Applicant: ALCON INC.
Inventor: Simone Jacqueline Stad , Adam Kayser
IPC: A45C11/00 , B65B5/06 , G06Q10/087
CPC classification number: A45C11/005 , B65B5/068 , G06Q10/087 , A45C2011/006
Abstract: A system and techniques for identifying an absence of any contact fitting lens in an user-friendly manner for automated replenishment. The system includes an assembly stocked with fitting lenses of know types that are depletable from known compartment locations of the assembly. Further, depletion of a compartment through the natural course of fitting lens distribution to customers results in the automatic display of a visual indicator at the corresponding compartment location. Thus, an imaging application of the front of the assembly may be utilized to immediately ascertain lens types of the assembly which are depleted. As a result, the image may be used to facilitate automatic replenishment of such depleted fitting lenses.
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公开(公告)号:US20240068465A1
公开(公告)日:2024-02-29
申请号:US18500956
申请日:2023-11-02
Applicant: Alcon Inc.
Inventor: Brad Yin CHEN , Eric LEE , Gary P. SORENSON , Vincent A. BAXTER
CPC classification number: F04B43/1261 , F04B43/1276 , F04B43/14 , F04B43/021
Abstract: Certain aspects of the present disclosure provide a surgical cassette configured to engage a first plurality of rollers of a first roller head. The cassette comprises a face coupled to a first substrate, the face being at a first angle with respect to the first roller head's axis of rotation and a wall of first substrate being at a second angle with respect to the axis of rotation, wherein the first angle is different from the second angle. The cassette also comprises a first sheet positioned on the wall's surface, wherein the first sheet and the wall form first one or more pump segments configured to engage the first plurality of rollers in a position where force applied by each one of the first plurality of rollers on the first one or more pump segments has a direction that is not parallel to the first roller head's axis of rotation.
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公开(公告)号:US11911262B2
公开(公告)日:2024-02-27
申请号:US17648896
申请日:2022-01-25
Applicant: Alcon Inc.
Inventor: R. Mitchell Sherry
IPC: A61F2/16
CPC classification number: A61F2/1662 , A61F2/167 , A61F2002/1681
Abstract: An apparatus for delivering an implant to an eye using a ratchet drive. Some embodiments of an apparatus for delivering an implant to an eye may comprise a gear rack configured to be coupled to the implant, a forward gearwheel, an input gearwheel meshed with the forward gearwheel, an idler gearwheel meshed with the input gearwheel, and a reverse gearwheel meshed with the idler gearwheel. An actuation lever may be configured to rotate the input gearwheel. Some embodiments may additionally comprise a pivot arm that may be operable to selectively engage the forward gearwheel and the reverse gearwheel to the gear rack.
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公开(公告)号:US20240050224A1
公开(公告)日:2024-02-15
申请号:US18458061
申请日:2023-08-29
Applicant: Alcon Inc.
Inventor: Daniel HILDEBRAND , Claudio ARGENTO , Gregory MATTHEWS
IPC: A61F2/16
CPC classification number: A61F2/1678 , A61F2/1672 , A61F2/167 , A61F2/1675 , A61F2/1691 , A61F2002/16903 , A61F2002/1681 , A61F2002/16905
Abstract: Intraocular lens delivery devices and methods of use.
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公开(公告)号:US11897190B2
公开(公告)日:2024-02-13
申请号:US17652084
申请日:2022-02-22
Applicant: Alcon Inc.
Inventor: Brian Craig Cox , Fernando Enrique Ortiz , Austin Xavier Rodeheaver
IPC: B29C64/135 , B29D11/02 , B29D11/00 , B33Y10/00 , B33Y30/00 , B29C64/264 , B29C64/245 , B29C64/255 , B29C64/227
CPC classification number: B29C64/135 , B29C64/227 , B29C64/245 , B29C64/255 , B29C64/264 , B29D11/00009 , B29D11/023 , B33Y10/00 , B33Y30/00
Abstract: A continuous additive fabrication system comprises a bath of photopolymer resin and a light source assembly having a light source and a motorized variable aperture. The light source assembly is operable to generate a focus point in the bath of photopolymer resin, the shape of the focus point at a curing plane within the bath of photopolymer resin corresponding to the shape of the motorized variable aperture. The continuous additive fabrication system further comprises a platform configured to support a build object and a drive mechanism (coupled to at least one of the platform and the light source assembly) configured to continuously move the curing plane through the bath of photopolymer resin. A size and/or shape of the motorized variable aperture is changed while the curing plane in continuously moved through the bath of photopolymer resin.
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公开(公告)号:US20240032785A1
公开(公告)日:2024-02-01
申请号:US18487193
申请日:2023-10-16
Applicant: ALCON INC.
Inventor: Ashok Burton Tripathi
CPC classification number: A61B3/0066 , A61B3/0025 , A61B3/13
Abstract: A retina viewing system and method of using the same includes an ophthalmic microscope, a disposable lens attachment, and an electronic control unit (ECU). The microscope has an optical head and a set of internal focusing lenses, the latter providing the microscope with a variable working distance or focal length. The disposable lens attachment includes a resilient body with a proximal end connected to the optical head and a distal end connected to a high-power/high-diopter distal lens. The ECU executes instructions for viewing a retina or other intraocular anatomy of a patient eye. Execution of the instructions causes the ECU to automatically adjust the variable working distance or focal length of the microscope when viewing an image of the retina through the distal lens.
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公开(公告)号:US11886045B2
公开(公告)日:2024-01-30
申请号:US17518423
申请日:2021-11-03
Applicant: Alcon Inc.
Inventor: Yuan Chang , Junhao Ge , Steve Yun Zhang , Michelle Plavnik , Augustine Twum Kumi
CPC classification number: G02C7/049 , B29D11/00048 , C08J7/18 , G02B1/043 , G02C7/102 , C08J2300/00 , C08J2451/00
Abstract: Described herein is a method for producing photochromic contact lenses, in particular, photochromic silicone hydrogel contact lenses. The method comprises a step of cast molding of a lens-forming composition including an iniferter to form an unprocessed contact lens having iniferter moieties covalently incorporated into its polymer matrix and a step of iniferter-induced graft-polymerization of a photochromic vinylic monomer to the polymer matrix only in its central region which is circular and concentric with the central axis of the unprocessed contact lens. The obtained photochromic contact lens has a central pupillary region that only can undergo a reversible color change upon exposure to UV/HEVL-radiation.
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