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Ophthalmic method and apparatusA method and apparatus for removing material and components such as the lens from an eye is described. High speed rotary cutting members at one end of a rod macerate the lens while an annular tubing disposed around the cutting members vibrates ultrasonically to coact with the cutting members in macerating the lens. At the same time, a liquid is supplied to the chamber behind the cornea of the eye. Spiral grooves extending along the rotating rod from the cutting members evacuate the liquid and the macerated material from the eye. An alternate embodiment of the apparatus includes a tube through which liquid is supplied to the operative site of the ultrasonically vibrating tube and the cutting members in the area of the lens.
Document ID
19730018335
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Evvard, J. C. (NASA Lewis Research Center Cleveland, OH, United States)
Mcgannon, W. J. (NASA Lewis Research Center Cleveland, OH, United States)
Vargo, D. J. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 2, 2013
Publication Date
June 5, 1973
Subject Category
Biotechnology
Report/Patent Number
Patent Number: US-PATENT-3,736,938
Patent Number: NASA-CASE-LEW-11669-1
Patent Application Number: US-PATENT-APPL-SN-198885
Accession Number
73N27062
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-3,736,938|NASA-CASE-LEW-11669-1
Patent Application
US-PATENT-APPL-SN-198885

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