Surgery – Instruments – Cutting – puncturing or piercing
Patent
1996-07-18
1998-08-25
Buiz, Michael
Surgery
Instruments
Cutting, puncturing or piercing
606131, 606132, A61B 1732
Patent
active
057979375
ABSTRACT:
An ophthalmologic knife includes a handle, and a blade having a base portion fixed to the tip of the handle and an incision-forming portion integrally formed with the base portion. The entire portion of the blade or at least part of the incision-forming portion which is inserted into the cornea of an eyeball has an arcuate cross section. By using the ophthalmologic knife, a three-dimensional incision having an arcuate cross section is formed in the cornea or the like. When a three-dimensional object having a cylindrical cross section or the like is inserted into the incision, the convex portion surrounded by the incision is bent toward the inside of the eyeball. This allows smooth insertion of the object.
REFERENCES:
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patent: 2838049 (1958-06-01), Eidsenhofer et al.
patent: 3798688 (1974-03-01), Wasson
patent: 3929138 (1975-12-01), Curi
patent: 4844070 (1989-07-01), Dee
patent: 5186178 (1993-02-01), Yeh et al.
patent: 5217477 (1993-06-01), Lager
patent: 5269316 (1993-12-01), Spitalny et al.
patent: 5336235 (1994-08-01), Myers
Ichikawa Kazuo
Nakajima Toshiyuki
Buiz Michael
Canon Staar Co. Inc.
Mulcare Nancy
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