43 results about "Ophthalmological implant" patented technology

A method is provided for increasing the outflow of fluid through Schlemm's canal that is useful for treatment of glaucoma. The implant is placed in Schlemm's canal by use of a flexible delivery instrument attached to the implant. The instrument and implant are positioned within the canal, the implant is released and the distal and proximal ends of the implant are connected to apply sufficient axial tensioning force on the inner wall of the canal to increase fluid permeability. In another embodiment a delivery instrument attached to the implant is positioned in the canal securing one of the distal or proximal ends of the implant within the canal. The implant provides sufficient axial tensioning force on the inner wall of the canal to increase fluid permeability of the inner wall of the canal. The other of the distal or proximal ends may be secured to maintain the tensioning force on the inner wall of the canal.

A method for calculating the required cylindrical power of a toric implant by using both the measured pre-operative corneal / ocular astigmatism and the predicted surgically-induced astigmatism. The post-operative corneal / ocular astigmatism is predicted using power vector analysis of the surgical technique employed by the surgeon. Such a method provides a more accurate method of calculating the required spherocylindrical refractive power of the implant. The method can be implemented manually, but preferably is automated by implementation on a computer through appropriate software.

Infinite gradient refractive index ophthalmic devices and methods of making same. The method involves diffusing a monomer which polymerizes to a lower or higher corresponding opposite refractive index polymer into a lower or higher index polymer structure and polymerizing same to create the gradient structure. The resulting polymeric structure is used to manufacture ophthalmic devices, e.g., intraocular lenses.

An ophthalmic implant for treating or alleviating the symptoms of glaucoma having a plate shaped to fit the surface of an eye. The plate has an inner ridge that defines a primary drainage region. Intraocular pressure is reduced by the transfer of aqueous fluid from the interior of the eyeball through a tube to the primary drainage region. To minimize post-operative hypotony, a secondary drainage region is provided on the plate outside the primary drainage region and defined either by the outer edge of the plate or an outer ridge having a lower profile than the inner ridge. When the pressure of fluid in the primary drainage region builds, fluid spills into the secondary drainage region. Fluid that is transferred to the plate is absorbed in surrounding tissues.

The invention relates to an ophthalmological implant (1), which comprises an optically imaging element (2) and a haptic element (3), which has a haptic element root (4). The present invention also relates to a corresponding method for producing an ophthalmological implant and to a characterization system (10) for identifying an ophthalmological implant, in particular an intraocular lens. The problem addressed by the invention is that of providing a unique identification on the ophthalmological implant and thus providing a possibility for unique and reliable identification. It should be possible to apply the identification with positive guidance, without the possibility of mix-ups and with minimal additional technical complexity. This problem is solved in that a rotationally symmetrical structural coding (5) of identification data of the ophthalmological implant is arranged on the haptic element root and / or the region of the haptic element near the haptic element root. The problem is also solved by means of a method for producing an ophthalmological implant, in which method, directly during or after the forming of the ophthalmological implant, the ophthalmological implant receives a rotationally symmetrical structural coding (5) of identification data by means of the same method.

Hydrogel copolymers which are hydrated polymerization products of monomeric mixtures comprising polysiloxane prepolymers and hydrophilic comonomers are useful for forming biomedical devices, particularly ophthalmic devices including contact lenses, intraocular lenses and ophthalmic implants. The copolymers have a desirable combination of oxygen permeability, tensile modulus, and water content, especially for soft contact lenses.

The present invention relates to a composition for ophthalmological products, to corresponding copolymers and the preparation thereof and to the use thereof for the production of ophthalmic lenses or ophthalmological implants and to these products.

The present invention describes implantable therapeutic devices, systems and methods for treating patients. The device comprises a hollow refillable housing (130) for implantation in the posterior segment of the eye through a puncture in the sclera of the eye, comprising a proximal retaining structure (120) protruding outwardly from a proximal region of the housing, an access portion An opening, and a pierceable barrier (140) positioned at least partially within the passage portion opening, the pierceable barrier being configured to be repeatedly pierced. The rigid porous structure (150) is positioned in a region of the housing away from the passage portion opening into a reservoir (160) extending along an axis between the pierceable barrier and the porous structure, the reservoir comprising dimensions A volume determined to deliver a therapeutic amount of a therapeutic agent to the eye over an extended period of time. A cover (110) is coupled to at least an upper surface of the proximal retention structure.

A cell growth inhibiting polymer for use in an ophthalmic implant includes at least one cell growth inhibiting monomer; and at least one other monomer selected from an acrylic monomer, a hydrophobic acrylic monomer, a hydrophilic acrylic monomer, a silicone monomer, a vinyl monomer and / or a collagen monomer.

The invention relates to a permanent interpositional ophthalmological implant between the sclera and the uveal tissue. The implant comprises a thin uvea-compatible body (50) having a thickness (e) which is at least less than 10 times the smallest of the two other dimensions of the body, the body of the implant comprising two opposing edges separated from one another along one of the two dimensionsperpendicular to the thickness, and one of the edges, known as the front edge (52), being curved in a concave manner away from body in a plane perpendicular to the thickness.

The invention provides a method for single-step terminal sterilization process for bio-active heparin coatings on materials and biomaterials containing heparin used in medical devices, such as catheters, tissue engineering scaffolds, or drug delivery carrier materials. This may include any medical device or implantable that could benefit from improved antithrombotic and biocompatible heparin surfaces. Other relevant device examples may include heparin or a heparin derivative coated stents to reduce clotting and restenosis, dental or ophthalmological implants. These materials may comprise additional polymeric compositions such as polyethyleneimine, dextran sulfate or their modified forms. These polymers together with heparin coatings may be applied to other substrate of medical devices such as metal, ceramics or biologically derived materials.