2 results about "Epikeratoplasty" patented technology

Equipment and methods for refractive surgery, including for keratoplasty. The invention describes equipment and methods for the production and implantation of a lamella of a tissue or material for the purpose of correcting a corneal geometry at maximum precision that is thus improved in relation to the prior art. The invention facilitates restoration of normal corneal geometry together with optical functionality of the cornea which is improved in relation to the prior art. A planning device, a treatment system and a planning method are designed to couple a device coordinate systems of the laser devices involved and characterization devices by application of registration and to uniquely register the supplied measurement data for generating the lamella to be implanted to the device coordinate systems by a specific, defined edge geometry of a blank from which the lamella is produced, and by the lamella, and by additional system and method aids.

A trephine blade (10, 56) for preparing a corneal graft for endothelial keratoplasty includes an asymmetric cutting formation (20) for cutting an asymmetrically shaped notch around a peripheral edge of the graft to indicate proper orientation of the graft in endothelial keratoplasty. In some embodiments, the cutting formation (20) projects along a longitudinal direction of the blade from a cutting end of the blade and generally includes a first edge (22) for making inwardly directed cuts on the graft and another cutting edge (24) for making outwardly directed cuts on the graft to form the asymmetric notch in the graft. The first edge (22) and an inner end of the other cutting edge (24) generally intersect at a curved channel (26) of the cutting formation (20). In the described embodiments, at least one of the opposite ends of the first edge (22) and the other cutting edge (24) of the cutting formation (20) is continuous with a respective curved cutting edge (32, 34) that curves into the cutting formation.