Power mode phaco
US6394974B1 · kind B1 · utility
52Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1999 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Apr 23, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B2201/76
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Phacoemulsification apparatus includes a phacoemulsification handpiece having a needle and an electrical system for ultrasonically vibrating said needle along with a power source for providing electrical power to the handpiece electrical system. Irrigation fluid is provided to the handpiece needle and aspirating fluid is removed from the handpiece needle. A determination of a voltage current phase relationship of the provided electrical power is made and in response thereto a control system varies a power level duty cycle provided to the handpiece electrical system from the power source and/or modify the aspiration flow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.