207 results about "Lens capsule" patented technology

Intraocular devices for use in and attached to the natural lens capsule of an eye are provided. The lens capsule may be maintained in a configuration to avoid post-operative changes that are deleterious to vision. Single or dual optic systems are provided, which may be accommodating. Combinations of devices to obtain dual optic systems are disclosed.

A deformable intracapsular implant device for shaping an enucleated lens capsule sac for use in cataract procedures and refractive lensectomy procedures. In one embodiment, the intraocular implant devices rely on thin film shape memory alloys and combine with the post-phaco capsular sac to provide a biomimetic complex that can mimic the energy-absorbing and energy-releasing characteristics of a young accommodative lens capsule. In another embodiment, the capsular shaping body is combined with an adaptive optic. The peripheral capsular shaping body carries at least one fluid-filled interior chamber that communicates with a space in a adaptive optic portion that has a deformable lens surface. The flexing of the peripheral shaping body in response to zonular tensioning and de-tensioning provides an inventive adaptive optics mechanism wherein fluid media flows between the respective chambers “adapts” the optic to increase and decrease the power thereof. In one embodiment, the capsular shaping body carries a posterior negative power adaptive optic that can be altered in power during accommodation to cooperate with an independent drop-in exchangeable intraocular lens.

An intraocular ring assembly and an artificial lens kit, both of which are usable for implantation in a lens capsule or capsular bag of natural eye. The intraocular ring assembly includes a first ring element having recessions therein, a second ring element, and a biasing element provided between the first and second ring elements. The artificial lens kit comprises such intraocular ring assembly and an intraocular lens to be movably supported in the recessions of the ring assembly in a coaxial relation therewith. A guide element may be provided to assist in rectilinear coaxial movement of the first and second ring elements.

A surgical instrument that creates a circular cut 42 of almost any diameter in the lens capsule 50 of the eye, yet its entire diameter is less than 1 mm when inserted into the eye. A cutting edge 14 is affixed to the distal tip of a super-elastic rod 11 with its distal end formed into a circular loop. The circular loop is first retracted inside of an outer tube member 12, and then the tube 12 is inserted into the eye. The loop is then expelled from the tube 12, allowing the loop to reform inside of the eye. As the loop is retracted back into the tube 12, the cutting edge 14 follows the circular path of the loop, cutting a circular opening (a capsulorrhexis) 42, into the lens capsule 50.

The present invention relates to an accommodating intraocular lens, which is suitable for replacement of the natural crystalline lens of the eye within the capsular bag. The intraocular lens can include a retainer plate with an annular region surrounding a central opening, and an optical lens. The retainer plate acts as a foundation for the optical lens, as the retainer plate can be positioned near or at the posterior portion of the lens capsule. The optical lens can sit on the retainer plate, but is otherwise not attached to the retainer plate. The optical lens can overlap or fit within the central opening of the retainer plate. The retainer plate can include a lip portion integrally disposed on a region of the retainer plate, wherein the lip provides a surface for holding at least a portion of an intraocular lens.

This invention effects a change in the accommodation of the human lens affected by presbyopia through the use of various reducing agents that change accommodative abilities of the human lens, and/or by applying energy to affect a change in the accommodative abilities of the human lens. This invention both prevents the onset of presbyopia as well as treats it. By breaking and/or preventing the formation of bonds that adhere lens fibers together causing hardening of the lens, the present invention increases the elasticity and distensibility of the lens and/or lens capsule.

A device for removing undesired tissue such as residual tissue, epithelial cells and/or other undesired material(s) from an inner surface of a lens capsule of an eye, includes an elongated body [2] having a proximal and a distal end and at least one central lumen extending between the ends. A flexible shaving filament (4) is movably provided in the lumen so as to be insertable into the lens capsule. The filament has an overall stiffness such that it will be able to conform to an inner surface of a lens capsule when inserted into the capsule, and also to enable shaving off of material from the inner surface. The invention also relates to a method for removing the undesired tissue is also disclosed.

Provided herein are a devices, ophthalmic lens systems and methods for restoring natural tension and anatomy of a lens capsule post-surgically in an eye of a subject. The device generally comprises an inward tensioning ring-like structure having a shape configured to circumferentially fit within and be anchored to a post-surgical lens capsule of the eye. The device may have one or both of external and internal grooves formed to receive the lens capsule and one or both of an intraoptical lens or a tensioning element. The ophthalmic lens system generally comprises the device and an intraocular lens inserted therein. The anchored device provides tension to an equatorial area of the capsule resulting in a decrease in equatorial diameter.

Apparatus and method for the removal of lens tissue includes a first handpiece having a laser emitting probe sized for insertion into a lens capsule and radiating a lens therein. The laser emitting probe includes a lumen for introducing irrigation fluid into the lens capsule. A second handpiece includes a pulsed controlled vibrated needle for insertion into the lens capsule and emulsifying laser eradiated lens tissue. The vibrated needle includes a lumen therethrough for aspiration of emulsified lens tissue and irrigation fluid.

A system and method for treating cells of a site in the body, such as at a lens capsule or choroid of an eye. The system and method employs an energy emitting device, and a positioning device, adapted to position the energy emitting device at a position in relation to the cells at the site in the body, such as the cells of the choroid or the lens capsule, so that energy emitted from the energy emitting device heats the cells to a temperature which is above body temperature and below a temperature at which protein denaturation occurs in the cells, to kill the cells or impede multiplication of the cells. The energy emitting device can also include a container containing a heated fluid that can include indocyanine green, which heats the cells to the desired temperature. Alternatively, the energy emitting device can include a laser diode, or a probe that emits radiation, such as infrared or ultraviolet radiation, laser light, microwave energy or ultrasonic energy. The system and method can further employ a material delivery device that can be unitary with or separate from the energy emitting device, an can provide a material, such as indocyanine green, to the cells at the site of interest. A light emitting device can be controlled to direct light onto the site of interest to activate the material present at the cells to alter a physical characteristic of the cells.

A haptic for fixation to, and manufacture in conjunction with, an intraocular lens to be implanted in the natural lens capsule of the human eye is disclosed. The haptic secures the lens in an appropriate position within the natural capsule so as to provide optimal visual acuity through the aphakic lens. The haptic ends are designed to position the lens neutrally, anteriorly or posteriorly within the lens envelope. The haptic has a of an anterior retention ring and a posterior retention ring.

A surgical probe with a tip shield (10) for lens removal by vibratory surgical instruments. The probe with tip shield (10) including a tip cap (60) disposed as a membrane covering the distal end (16) surface of a vibratory probe (52) to act to protect the lens capsule during operation. Direct contact between the metallic vibratory probe (52) and the lens capsule (68) is avoided by the interposed tip cap (60) even when the capsule (68) is aspirated by the central aspiration opening (64). Vibratory energy applied to probe tip (50) is transmitted to the lens tissue across the walls of tip cap (60) to provide protection of the lens capsule (68) while effectively fragmenting and liquefying the tissue by emulsification.