Surgery – Instruments – Means for removing tonsils – adenoids or polyps
Reexamination Certificate
2001-10-15
2003-04-29
Philogene, Pedro (Department: 3732)
Surgery
Instruments
Means for removing tonsils, adenoids or polyps
C606S107000
Reexamination Certificate
active
06554843
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present is related to a medical instrument, and more particularly to an instrument for removing a cataract in an eye.
2. Description of Related Art
Cataracts are opaque tissue which has grown in a lens of an eye causing a loss of sight. In an operation for recovering a cataract patient's sight, a doctor removes the opaque tissue by a bistoury and plants an artificial lens in the patient's eye. However, healthy tissue around the diseased tissue often is removed by the bistoury because the lens has a round profile. Furthermore, it is also not easy to completely remove the irregularly-shaped diseased tissue using the conventional bistoury.
Therefore, the invention provides a cataract instrument to mitigate and/or obviate the aforementioned problems.
SUMMARY OF THE INVENTION
The main objective of the invention is to provide a cataract instrument with which a doctor can effectively remove opaque tissue in a patient's eye.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
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patent: 6156042 (2000-12-01), Aramant
patent: 6245078 (2001-06-01), Ouchi
Bonderer David A
Philogene Pedro
Thorp Reed & Armstrong LLP
Universal Optical Co., Ltd.
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