82 results about "Capsulorhexis" patented technology

Systems and methods are described for cataract intervention. In one embodiment a system comprises a laser source configured to produce a treatment beam comprising a plurality of laser pulses; an integrated optical system comprising an imaging assembly operatively coupled to a treatment laser delivery assembly such that they share at least one common optical element, the integrated optical system being configured to acquire image information pertinent to one or more targeted tissue structures and direct the treatment beam in a 3-dimensional pattern to cause breakdown in at least one of the targeted tissue structures; and a controller operatively coupled to the laser source and integrated optical system, and configured to adjust the laser beam and treatment pattern based upon the image information, and distinguish two or more anatomical structures of the eye based at least in part upon a robust least squares fit analysis of the image information.

A modular IOL system including intraocular primary and secondary components, which, when combined, form an intraocular optical correction device, wherein the secondary component is placed on the primary component within the perimeter of the capsulorhexis, thus avoiding the need to touch or otherwise manipulate the capsular bag. The secondary component may be manipulated, removed, and/or exchanged for a different secondary component for correction or modification of the optical result, on an intra-operative or post-operative basis, without the need to remove the primary component and without the need to manipulate the capsular bag. The primary component may have haptics extending therefrom for centration in the capsular bag, and the secondary component may exclude haptics, relying instead on attachment to the primary lens for stability. Such attachment may reside radially inside the perimeter of the capsulorhexis and radially outside the field of view to avoid interference with light transmission.

A tensioning device for attaching to the anterior capsule of an eye, and accommodative intraocular lens systems employing the device. The tensioning device includes a biocompatible, elastically reconfigurable ring for restoring at least a portion of the anterior capsule centripetal forces lost by capsulorhexis. The tensioning device also includes a plurality of penetrators configured for attaching the ring to the anterior capsule. The plurality of penetrators is biocompatible with the eye and partially embedded in a part of the ring configured for facing the anterior capsule.

An accommodative lens assembly includes a lens body defining an optic lens, a haptic system, and a wing. The lens body is formed and implanted into an eye in a disaccommodative configuration. The haptic system includes one or more haptics that support the optic lens and transmits forces from an anatomical structure such as a ciliary body of the eye, causing the optic lens to deform into an accommodative configuration. In order to stabilize the optic lens so that the optic lens is not displaced from its implantation site, the wing anchors the optic lens within an anterior capsulorhexis of the capsular bag such that the transmitted forces that deform the optic lens during accommodation do not also displace the optic lens from its implanted position. When implanted, the optic lens is anterior to the capsular bag.

A method of suturing the lens capsule of the eye in the event of accidental rupture thereof or to create a valve and/or to close a capsulorhexis by laser-induced welding onto the capsule's surface of a flap of biocompatible biological tissue prepared so as to be optically absorbent at the wavelength of the laser being used for welding. The method is suitable for use in so-called Phaco-Ersatz or “lens refilling” ophthalmologic surgery. Welding is desirably performed using laser devices that comprise a laser generator and a fiberoptic system for conveying the laser beam, complete with an applicator handpiece suitable for use in welding the flaps onto the lens capsule in a liquid environment. The handpiece is shaped so as to exert moderate pressure on the tissues to be welded with the free end of the optic fiber.

An intraocular lens that is capable of being inserted through a micro-incision includes an optic having an anterior and a posterior surface and a plurality of projections extending from the anterior and posterior surfaces. The anterior and posterior surfaces include a recess. The optic is implanted such that a rim of the capsulorhexis is disposed in the recess such that the plurality of projections grip the capsular bag.

The CCUTTER is an innovative ophthalmologic surgical instrument that greatly facilitates the performance of cataract surgery. Cataract surgery is the most frequently performed surgery in the United States, with over one million cataract surgeries done each year. A cataract is a clouding of the eye's internal lens, which interferes with the individual's ability to see clearly. During surgery, a continuous circular tear (called capsulorhexis) is made in the anterior capsule of the crystalline lens of the eye, and the front surface of the cataract is opened to allow access to the clouded tissue inside. The cloudy portion is then removed, leaving the thin clear back surface of the lens (called the posterior capsule) in place. A lens implant is then placed in the shell of the natural lens, and the incision is closed. The CCUTTER is designed to improve the predictability and consistency of performing the capsulorhexis during cataract surgery.

A mechanical surgical device and device are provided for allowing the user to form a circular incision in an intraocular tissue, such as the anterior capsule of the eye, as part of an anterior capsulorhexis. Unlike the prior art, the device of the present invention is comprised of mechanical components, where the mechanical components drive a cutting member in a motion around a fixed pivot point to perform a continuous curvilinear capsulorhexis. Where the pivot point is the location of the slit incision in the cornea or the sclera through which the cutting tip is inserted to access the anterior capsule bag. The present device is hand held, compact and relatively light in weight. The present capsulorhexis device requires only a 1 mm incision in the corneal or scleral tissue. The present invention does not require the manual skill of the user to perform a circular incision.

A mechanical surgical device and device are provided for allowing the user to form a circular incision in an intraocular tissue, such as the anterior capsule of the eye, as part of an anterior capsulorhexis. Unlike the prior art, the device of the present invention is comprised of mechanical components, where the mechanical components drive a cutting member in a motion around a fixed pivot point to perform a continuous curvilinear capsulorhexis. Where the pivot point is the location of the slit incision in the cornea or the sclera through which the cutting tip is inserted to access the anterior capsule bag. The present device is hand held, compact and relatively light in weight. The present capsulorhexis device requires only a 1 mm incision in the corneal or scleral tissue. The present invention does not require the manual skill of the user to perform a circular incision.

A method of selecting an intraocular lens, where the size, shape or overlap of capsulorhexis is used in addition to other factors to select the properties of the intraocular lens implanted in the eye to achieve certain refractive outcome.

An intraocular device that includes a base member is provided. The device can be an accommodation intraocular lens device with the base member and a power changing lens. The base member comprises an annular haptic that surrounds a central cavity having an open end. The power changing lens is configured to fit within the central cavity. The haptic comprises one or more projections, e.g., tabs that hold another device in position. In the case of the accommodating intraocular lens device, the other device is the power changing lens. The base member and the power changing lens are maintained separate until assembly in the eye of the patient. During assembly, the base member is advanced into the capsular bag of a patient through a capsulorhexis and oriented such that the open end of the central cavity faces the cornea. Subsequently, the power changing lens is advanced into the central cavity through the capsulorhexis. The one or more tabs are placed anterior of the power changing lens to secure the power changing lens within the cavity.

A method for refilling a lens of an eye or increasing the elasticity of a lens of an eye includes removing a central portion of the lens core through the eye's cornea, a capsulorhexis in the eye's lens capsule and a gullet extending at least partially through the cortex of the lens. The lens is then refilled with a synthetic lens material. Sufficient lens core is left in place so that the synthetic material is not in contact with a lens capsule of the eye. The synthetic material used for refilling may be selected and may be formed in a shape and thickness so as to affect the refractive characteristics of the lens. An endocapsular lenticule may be inserted in the lens to affect the refractive characteristics of the lens.

A device and method for maintaining the shape and/or position of an opening formed by a capsulorhexis.

A device for performing a capsulorhexis incision inserted via a small wound cut in the corneal or sclera tissue. The device includes a motorized cutting element and a handle The motorized cutting element has mechanical means to create a cut in the anterior capsule tissue along a planned capsulorhexis line, said mechanical means tear small fragments of the anterior capsule in a fashion that may be similar to either a saw, a rotating chipping bit, a continuous hole puncher or a combination of those mechanical means thereby, creating a relatively smooth cut without the risk of undesired capsular tear.

An apparatus for teaching and practicing an ophthalmologic surgical technique of creating the continuous curvilinear capsulorhexis comprises a housing with a first base end and a second suction cup end for holding a malleable body; a flexible film or cellophane-type membrane covers the operating area of the malleable body; this flexible film can be held into place on the first base end with a first cap with an aperture or opening; in between the first base end and the second suction cup end, there can be a flexible stock with a threaded or friction connection. There can also be a second cap addition, which simulates a cornea and anterior chamber, which can be filled with viscoelastic material, which can increase the pressure in the eye and flattens the anterior capsule.

A one-piece capsulorhexis device is presented comprising a membrane having a curved, flexible substantially discoid flap-valve member shaped to align with an ocular lens capsular bag inner surface, and at least one integral, flexible retainer shaped to align with an ocular lens capsular bag outer surface.

The invention relates to the field of medical health, and discloses a pair of capsulorhexis forceps used through a micro incision. The CCC is a key step in the process of a cataract phacoemulsification operation, and needs to be accomplished through the capsulorhexis forceps. At present, a pair of capsulorhexis forceps frequently used clinically can be opened and closed in a left-and-right mode so that only when the requirement that an incision is large enough is met, the capsulorhexis forceps can be fully opened. The pair of capsulorhexis forceps used through the micro incision comprises a forceps handle, a forceps neck and forceps tips, wherein the forceps handle is a front and rear piece press fit type handle, the forceps neck is of a structure with an upper piece and a lower piece, and the front end of the forceps neck is downwards bent to form the front forceps tip and the rear forceps tip. In the process of using the pair of capsulorhexis forceps, front-and-rear opening and closing movement of the forceps handle drives the upper piece and the lower piece of the forceps neck to carry out front-and-rear relative movement, then the front forceps tip and the rear forceps tip can carry out front-and-rear opening and closing movement, and the clamping motion and the release motion are achieved. The pair of capsulorhexis forceps can smoothly enter into an eye through the micro incision, operation is convenient, and daily maintenance is easy.

A method of manufacturing an intraocular lens inside a capsular bag after the natural lens has been removed employs a sealing device comprising a plug part adapted to seal a rhexis in a capsular bag, thus preventing displacement through the rhexis of a lens-forming liquid material injected through the rhexis and adapted to replace the natural lens and form an intraocular lens implant. The plug part has a slightly larger area than the capsulorhexis and is made of a deformable polymer. The sealing device comprises an adjusting means connected to the plug part, the adjusting means having the function of positioning the plug part to a desired location.

The invention discloses a discission needle and an operation method of the discission needle. The discission needle comprises a rotating rod, a first gear and a second gear meshed with the first gear. The first gear comprises a circular disc base, gear teeth arranged on the upper surface of the circular disc base and a stand column penetrating through the center of the circular disc base. The upper portion of the stand column is provided with a groove, and the groove is cylindrical. The rotating rod penetrates through the center of the second gear, and the end, close to the second gear, of the rotating rod is matched with the groove in shape. The inner surface of the circular disc base is provided with a sliding rail groove, and the sliding rail groove is matched with a protruding block arranged on the outer surface of the stand column in shape. The side end of the circular disc base is provided with a needle body, one end of the needle body is arranged on the circular disc base through a fastening structure, and the other end of the needle body is vertically connected with the tip end of a scraping membrane. By means of the discission needle and the operation method of the discission needle, linkage between the second gear and the first gear is achieved, the needle body is driven to conduct capsulorhexis operation, the edge of a capsulorhexis mouth generated after capsulorhexis operation is finished is continuous and circular, and intraoperative complications caused by traditional surgical operation are avoided; operation is simple, no longer learning cycle is needed, and the skill level can be reached.

The invention discloses a capsulectomy and capsulorhexis integrated device for a cataract surgery. The capsulectomy and capsulorhexis integrated device comprises an upper connecting middle rod and a lower connecting middle rod. Connecting holes are formed in the surfaces of the upper connecting middle rod and the lower connecting middle rod. A rotating transverse rod is arranged between the upperconnecting middle rod and the lower connecting middle rod. A through hole is formed in the surface of the rotating transverse rod. A connecting pin shaft penetrating through the through hole is inserted in the connecting holes. The outer side of the rotating transverse rod is connected with a fine capsulectomy device through a fine tuning capsulectomy structure. The inner sides of both the upper connecting middle rod and the lower connecting middle rod are connected with a hook-shaped gentle capsulorhexis device through an arced adjusting structure. The capsulectomy and capsulorhexis integrated device adopts integrated design, so that the capsulectomy device and the capsulorhexis device are combined together, and the cataract surgery can be conducted more smoothly; meanwhile, the capsulectomy and capsulorhexis integrated device changes the capsulorhexis mode of the capsulorhexis device, thus a capsulorhexis incision can be smoother and flatter, and the capsulorhexis quality is better;and in addition, the capsulectomy and capsulorhexis integrated device can further enable the capsulectomy and capsulorhexis processes to be more gentle, and thus the surgery effect is better.

The invention discloses an ultrasonic capsulorhexis needle for cataract suction, which comprises a metal connector and a needle body. The metal connector and the needle body are of a split structure; the needle body is connected to the rear of the metal connector; the metal connector is fixedly connected to the far end of an ultrasonic emulsification handle; and the furthest end of the needle body is the tip end. The ultrasonic capsulorhexis needle has the beneficial effects that weaknesses of burning a capsule by an electrode are avoided; by the tip end of the capsulorhexis needle which is driven ultrasonically, a lens capsule bag can be more effectively and softly torn; and moreover, the ultrasonic frequency can be flexibly reduced and even not started according to conditions and only the conventional step of manually tearing the capsule is adopted, so that great flexibility is brought to a doctor. According to the ultrasonic capsulorhexis needle for cataract suction, the pressure applied to eyes in the process of tearing the capsule can be reduced, the capsulorhexis process is easier to operate, safety is improved, and the ultrasonic capsulorhexis needle is particularly further required by patients suffering from special conditions, such as cataract patients of which ciliary suspensory ligaments are weak, extra-hard or excessively soft.