An actuator unit, a method and a computer program product

Abstract

Title: An actuator unit, a method and a computer program product Abstract The invention relates to an actuator unit for operating an ophthalmic surgical phacoemulsification device. The actuator unit comprises a stack of driving piezo elements for driving a tip of the ophthalmic surgical phacoemulsification device. Further, the device comprises a driver circuit arranged for generating a driver signal for actuating the stack of piezo elements. In addition, the device comprises a probing circuit arranged for generating a probing signal for ultrasonically probing an environment of the tip. Furthermore, the device comprises a sensing circuit arranged for receiving a sensing signal resulting from probing the tip environment. The invention also relates to a method and a computer program product. Fig. 1