Method and apparatus for ultrasonic surgical fragmentation and removal of tissue
US4827911A · kind A · utility
2,167Cited by
11References
64Claims
0Family size
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Key dates
| Filing date | Apr 2, 1986 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Apr 2, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B2201/76
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.