METHOD FOR PRODUCING WETTABLE SILICONE HYDROGEL CONTACT LENSES

    公开(公告)号:US20230103231A1

    公开(公告)日:2023-03-30

    申请号:US17823539

    申请日:2022-08-31

    Applicant: Alcon Inc.

    Abstract: The invention provide a method for producing coated silicone hydrogel contact lenses in a cost-effective and environmentally friendly manner. The method is free of lens extraction step and comprises: curing thermally or actinically in a lens mold a polymerizable composition that comprises at least one hydrophilized polysiloxane vinylic crosslinker, hydroxyethyl methacrylate, C1-C2 alkoxyethyl (meth)acrylate, at least one free-radical initiator, and at least one solvent selected from the group consisting of water, propylene glycol, and/or a low-molecular weight polyethyleneglycol; and heating the cast-molded silicone hydrogel contact lens in an aqueous coating solution to form a coated silicone hydrogel contact lens comprising a bulk silicone hydrogel material and a layer of a crosslinked hydrophilic polymeric material that is covalently attached onto the bulk silicone hydrogel material. Resultant contact lenses are optically clear and wettable and have a relatively high oxygen permeability.

    POSTERIOR VITREOUS DETACHMENT VITRECTOMY PROBE

    公开(公告)号:US20230098330A1

    公开(公告)日:2023-03-30

    申请号:US17820643

    申请日:2022-08-18

    Applicant: Alcon Inc.

    Abstract: A vitrectomy probe outfitted with a vitrectomy needle having a region of enhanced frictional character which may be referred to as an “augmented” surface region. This region may be utilized to interface with tissues such as the hyaloid membrane for forcibly shearing it from, for example, the underlying retina in a manner that avoids a degree of pulling forces on the retina in achieving the hyaloid detachment. By utilizing the vitrectomy probe to achieve the detachment, a subsequent intervention to introduce the probe for uptake of the sheared or detached hyaloid membrane material may also be avoided.

    System and method of utilizing one or more images of an eye in medical procedures

    公开(公告)号:US11615526B2

    公开(公告)日:2023-03-28

    申请号:US16814511

    申请日:2020-03-10

    Applicant: Alcon Inc.

    Inventor: Johannes Loerner

    Abstract: The disclosure provides a system that may acquire, via an image sensor, an image of an eye of a person; may determine a location of an iris of the eye from the image; may determine a position of a suction ring from the image; may display, via a display, the image; may display, via the display, a first graphic overlay on the image that indicates the location of the iris of the eye; may display, via the display, a second graphic overlay on the image that indicates the position of the suction ring; may determine multiple iris structures from the image; may determine an orientation of the eye based at least on the multiple iris structures from the image; and may display, via the display, information that indicates the orientation of the eye.

    SYSTEMS AND METHODS FOR VISCOELASTIC DELIVERY

    公开(公告)号:US20230089016A1

    公开(公告)日:2023-03-23

    申请号:US18060484

    申请日:2022-11-30

    Applicant: Alcon Inc.

    Abstract: A method and device for reducing intraocular pressure in a patient. The method may comprise administering a viscoelastic material in Schlemm's canal to open aqueous humor outflow pathways. The device is adapted to perform the method. The viscoelastic material may be configured to lower the intraocular pressure within the eye.

    METHOD OF MAKING DIVERGING-LIGHT FIBER OPTICS ILLUMINATION DELIVERY SYSTEM

    公开(公告)号:US20230085961A1

    公开(公告)日:2023-03-23

    申请号:US18052295

    申请日:2022-11-03

    Applicant: Alcon Inc.

    Abstract: A process of making a diverging-light fiber optics illumination delivery system includes providing a micro-post comprising a glass-ceramic light-scattering element that includes at least one of a ceramic, a glass ceramic, an immiscible glass, a porous glass, opal glass, amorphous glass, an aerated glass, and a nanostructured glass; and fusion-splicing the glass-ceramic micro-post to the optical fiber by pulling an arc between electrodes across a gap formed by the optical fiber and the glass-ceramic micro-post; maintaining the arc for a time sufficiently long to make facing surfaces of the optical fiber and the micro-post one of malleable and molten; and pushing and thereby fusing together the facing surfaces of the optical fiber and the micro-post. Some embodiments can include fusing the glass-ceramic micro-post to the optical fiber by applying a laser beam to heat up at least one of the facing surfaces of the optical fiber and the glass-ceramic micro-post.

    PRODUCTION LINE FOR THE PRODUCTION OF OPHTHALMIC LENSES

    公开(公告)号:US20230079508A1

    公开(公告)日:2023-03-16

    申请号:US17931193

    申请日:2022-09-12

    Applicant: Alcon Inc.

    Abstract: An automated production line for the production of ophthalmic lenses comprises: a production line front end (1) comprising: a first injection-molding machine (10) and a second injection-molding machine (12) a casting module (14) comprising a filling station (144) and a capping station (145); a stacking module (15) and a curing module (16); a destacking module (17) and a demolding and delensing module a production line back end (2) comprising: a scalable treatment module (20) comprising a number of liquid baths for a liquid bath treatment of the cured lenses (CL) carried by the treatment carrier tray (200) to obtain the ophthalmic lenses, wherein the number of liquid baths are reduced or increased pending on the number of ophthalmic lenses concurrently produced by the production lines.

    ADJUSTABLE STIFFENER FOR SURGICAL INSTRUMENTS

    公开(公告)号:US20230064225A1

    公开(公告)日:2023-03-02

    申请号:US17807778

    申请日:2022-06-20

    Applicant: Alcon Inc.

    Abstract: The present disclosure generally relates to surgical instruments having variable stiffness, and more particularly, surgical instruments having variable stiffness for ophthalmic surgical procedures. In certain embodiments, a surgical instrument includes a base unit, a probe, a stiffener, and an actuation mechanism. The stiffener is formed of a hollow tubular member substantially surrounding at least a portion of a length of the probe. The actuation mechanism is configured to actuate the stiffener along the length of the probe and adjust the stiffness of the probe, thus providing a user better control of the surgical instrument. The actuation mechanism includes a stiffener biasing device configured to apply a first biasing force against the stiffener in the distal direction and, in some embodiments, a control member configured to lock the stiffener in a position along the length of the probe.

    Methods and Systems for Eye Illumination

    公开(公告)号:US20230061487A1

    公开(公告)日:2023-03-02

    申请号:US18053040

    申请日:2022-11-07

    Applicant: Alcon Inc.

    Abstract: Projection of visible, non-treatment light onto an eye to illuminate specific areas of the surgical field is disclosed herein. A surgical system may include a surgical console; a microscope communicatively coupled to the surgical console; a camera communicatively coupled to the surgical console; and a projector operable to project light onto an eye. The projector may be communicatively coupled to the surgical console. A method for light projection may include collecting information from an eye using a camera; determining the light projection based, at least in part, on the collected information; and projecting visible, non-treatment light onto the eye using a projector.

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