Universal automated keratectomy apparatus and method

Details Universal automated keratectomy apparatus and method Universal automated keratectomy apparatus and method

1995-07-27

1997-08-19

Buiz, Michael Powell

Surgery

Instruments

Corneal cutter or guide for corneal cutter

128899, A61B 1700

Patent

active

056583036

ABSTRACT:
A surgical device for altering the curvature of an eye includes a base which carries a transparent insert, a drive device, a knife edge coupled to the drive device and movable to a plane immediately adjacent the under surface of the transparent insert. The transparent insert includes a face having a surface portion shaped according to a predetermined correction. The base further includes a suction ring which forms a vacuum chamber with the eye. The suction ring is placed against the eye. Application of vacuum results in the cornea of the eye being urged into engagement with the shaped surface portion. Actuation of the drive device moves the knife edge whereby the cornea is cut. Only the knife edge traverses the insert. In a surgical procedure, a lamellar flap is first cut to remove the epithelium, and a second prescriptive cut is made to excise a disk to provide the prescriptive correction.

REFERENCES:
patent: 4662370 (1987-05-01), Hoffman et al.
patent: 4884570 (1989-12-01), Krumeich et al.
patent: 5133726 (1992-07-01), Ruiz et al.
patent: 5288292 (1994-02-01), Giraud et al.

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