04827911 is referenced by 558 patents and cites 12 patents.

A method and apparatus for periodically interrupting ultrasonic power applied to a ultrasonically vibrating tip to control its amplitude between high and low or zero amplitudes with a selectible duty cycle and repetition rate provides enhanced fragmentation and improves surgical control. The duty cycle may also vary as a function of a remotely sensed parameter such as tissue temperature.

Title
Method and apparatus for ultrasonic surgical fragmentation and removal of tissue
Application Number
6/847301
Publication Number
4827911
Application Date
April 2, 1986
Publication Date
May 9, 1989
Inventor
Leonard M Emery
West Haven
CT, US
Vaclav O Podany
East New Fairfield
CT, US
Chana Puiam
Queens
NY, US
Alexander Kreizman
Stamford
CT, US
Alan Broadwin
Brooklyn
NY, US
Agent
Vorys Sater Seymour and Pease
Assignee
Cooper LaserSonics
CA, US
IPC
A61H 1/00
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