LASIK FLAP CUTTING PATTERNS INCLUDING INTRASTROMAL POCKET FOR BUBBLE MANAGEMENT

    公开(公告)号:US20220175581A1

    公开(公告)日:2022-06-09

    申请号:US17457419

    申请日:2021-12-02

    Abstract: A method implemented in an ophthalmic surgical laser system that employs a resonant scanner, scan line rotator, and XY- and Z-scanners, for forming a corneal flap in a patient's eye with improved bubble management during each step of the flap creation process. A pocket cut is formed first below bed level, followed by the bed connected to the pocket cut, then by a side cut extending from the bed to the anterior corneal surface. The pocket cut includes a pocket region located below the bed level and a ramp region connecting the pocket region to the bed. The bed is formed by a hinge cut and a first ring cut at lower laser energies, followed by a bed cut and then a second ring cut, which ensures that any location in the flap bed is cut twice to minimize tissue adhesion. The side cut is formed by multiple side-cut layers at different depths which are joined together. All cuts are formed by scanning a laser scan line generated by the resonant scanner.

    Corneal lenticular incisions with transition zones in laser-assisted ophthalmic procedures

    公开(公告)号:US12005001B2

    公开(公告)日:2024-06-11

    申请号:US17445308

    申请日:2021-08-17

    CPC classification number: A61F9/00827 A61F2009/00872 A61F2009/00897

    Abstract: In laser-assisted corneal lenticule extraction procedures, the lenticule incision profile includes anterior and posterior lenticule incisions, with one or more of the following features: plano transition zone outside the optical zone, to improve mating of anterior and posterior incision surfaces after lenticule extraction; shallow arcuate incisions above the anterior incision and near the lenticule edge, to improve surface mating; separate ring cut intersecting the anterior and posterior incisions in the transition zone, to reduce tissue bridges and minimize tear at the lenticule edges and facilitate easy lenticule extraction; larger posterior incision, which includes a pocket zone outside the lenticule edge, for better surface mating and bubble management during cutting; and a separate ring shaped pocket cut intersecting the pocket zone of the posterior incision, for bubble management. An entry cut can intersect either the pocket zone of the posterior incision or an entry extension zone of the anterior incision.

    CORNEAL MARKER TOOLS FOR OPHTHALMIC PROCEDURES

    公开(公告)号:US20220175582A1

    公开(公告)日:2022-06-09

    申请号:US17457411

    申请日:2021-12-02

    Abstract: Various corneal marker tools and assemblies are provided for use in ophthalmic procedures to place ink marks on the cornea. One tool assembly includes an applicator containing an ink and a disposable marking tip attachable to the applicator, where ink is injected from the applicator into hollow channels of the marking tip. Another tool assembly includes a reusable handle and a disposable marking tip attachable to the handle. Another tool assembly includes a marker assembled with a cap with an ink pad. Another tool assembly includes a marker tool and a nesting adapter to be used with a patient interface device. Other tools have a one-piece design with a marker head and an handle fixedly joined together. Some tools have pre-inked marking elements, or an embedded light source, or a built-in level indicator, or a ring-shaped marker head, or a leaf spring feature on their marking prongs.

    CORNEAL LENTICULAR INCISIONS WITH TRANSITION ZONES IN LASER-ASSISTED OPHTHALMIC PROCEDURES

    公开(公告)号:US20240335323A1

    公开(公告)日:2024-10-10

    申请号:US18737900

    申请日:2024-06-07

    CPC classification number: A61F9/00827 A61F2009/00872 A61F2009/00897

    Abstract: In laser-assisted corneal lenticule extraction procedures, the lenticule incision profile includes anterior and posterior lenticule incisions, with one or more of the following features: plano transition zone outside the optical zone, to improve mating of anterior and posterior incision surfaces after lenticule extraction; shallow arcuate incisions above the anterior incision and near the lenticule edge, to improve surface mating; separate ring cut intersecting the anterior and posterior incisions in the transition zone, to reduce tissue bridges and minimize tear at the lenticule edges and facilitate easy lenticule extraction; larger posterior incision, which includes a pocket zone outside the lenticule edge, for better surface mating and bubble management during cutting; and a separate ring shaped pocket cut intersecting the pocket zone of the posterior incision, for bubble management. An entry cut can intersect either the pocket zone of the posterior incision or an entry extension zone of the anterior incision.

    CORNEAL LENTICULAR INCISIONS WITH TRANSITION ZONES IN LASER-ASSISTED OPHTHALMIC PROCEDURES

    公开(公告)号:US20220054316A1

    公开(公告)日:2022-02-24

    申请号:US17445308

    申请日:2021-08-17

    Abstract: In laser-assisted corneal lenticule extraction procedures, the lenticule incision profile includes anterior and posterior lenticule incisions, with one or more of the following features: plano transition zone outside the optical zone, to improve mating of anterior and posterior incision surfaces after lenticule extraction; shallow arcuate incisions above the anterior incision and near the lenticule edge, to improve surface mating; separate ring cut intersecting the anterior and posterior incisions in the transition zone, to reduce tissue bridges and minimize tear at the lenticule edges and facilitate easy lenticule extraction; larger posterior incision, which includes a pocket zone outside the lenticule edge, for better surface mating and bubble management during cutting; and a separate ring shaped pocket cut intersecting the pocket zone of the posterior incision, for bubble management. An entry cut can intersect either the pocket zone of the posterior incision or an entry extension zone of the anterior incision.

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