Computer controlled smart phacoemulsification method and apparat

Details Computer controlled smart phacoemulsification method and apparat Computer controlled smart phacoemulsification method and apparat

1993-11-08

1996-05-28

Maglione, Corrine M.

Surgery

Means for introducing or removing material from body for...

With means for cutting, scarifying, or vibrating tissue

601 2, 606169, 606170, 606171, A61B 1720

Patent

active

055206336

ABSTRACT:
A method and apparatus for operating on the human eye detects changes in load, more specifically, mechanical impedance, of the transducer and controls aspiration based on the load changes. A change from a lower load to a higher load indicates that harder tissue is being encountered and accordingly causes aspiration amount to increase. Conversely, a change from a higher load to a lower load indicates that aspiration amount should be quickly decreased since the tissue which is being encountered is softer. One way to detect the impedance is by a sensor, e.g., a piezoelectric element coupled to the operating needle detecting the movement thereof.

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