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1. (WO2005111970) SYSTEM FOR INSTRUCTING REMOVAL OF CATARACT TISSUE

Pub. No.:    WO/2005/111970    International Application No.:    PCT/US2004/011672
Publication Date: Nov 24, 2005 International Filing Date: Apr 15, 2004
IPC: G09B 23/28
A61B 5/00
Applicants: MACKOOL, Richard, J.
Inventors: MACKOOL, Richard, J.
Title: SYSTEM FOR INSTRUCTING REMOVAL OF CATARACT TISSUE
Abstract:
A system and method for instructing removal of cataract tissue. Software generated vacuum signal (80) indicating vacuum force to be applied within the shaft of a phacoemulsification needle (120). Software responsive to a monitoring vacuum force signal reaching a threshold level (20) as a result of occlusion of the tip of the needle by cataract tissue (30). Said signal activates to and fro oscillation of needle tip (35), or application of ultrasonic power (37). Additional software instructions include; user-initiated oscillation, an ultrasonic termination signal (42), or the vacuum monitoring signal dropping below an activation threshold level (40).