| 摘要 |
The invention discloses a medical instrument, comprising: a handle, a blade portion having a sharpened edge for cutting a lens capsule of an eye at the periphery of a portion of said capsule to be removed during surgery, said blade portion being extendible and retractable from the handle tip portion thereby permitting insertion of said blade portion through a small incision in the eye when the blade is retracted and thereafter to correspond to a peripheral extent to said portion of the capsule to be removed during surgery, a mechanism for extending and retracting said blade portion, said mechanism located in said handle portion, and a foot pedal-controlled motor coupled to said handle for effecting cutting of capsule by sad blade portion. The invention additionally relates to a method for utilizing a medical instrument in performing cataract surgery.
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