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Medical instrument for use in cataract surgery and a method for use thereof

  • US 20040092982A1
  • Filed: 06/13/2003
  • Published: 05/13/2004
  • Est. Priority Date: 02/03/2000
  • Status: Abandoned Application
First Claim
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1. ) A medical instrument, comprising;

  • a handle, a blade potion having an adjustable diameter and 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 extended to correspond to a peripheral extent to said portion of the capsule to be removed during surgery, and subsequently retracted for allowing removal from the eye, wherein said blade portion can extend to a configuration having a 4-8 millimeter diameter range for cutting a lens capsule of an eye having a corresponding size;

    a mechanism for extending and retracting said blade portion, said mechanism located in said handle portion, and optionally, a foot pedal-controlled motor coupled to said handle for effecting cutting of the capsule by said blade portion via slight bidirectional movements of the blade portion.

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