Vacuum level control of power for phacoemulsification hand piece
US8414605B2 · kind B2 · utility
10Cited by
109References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2011 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Oct 11, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/00745
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention comprises a method of operating an ophthalmic surgical hand piece, providing a series of power pulses to the hand piece, each of the series of power pulses having a first portion that produces torsional movement of a cutting tip and a second portion that produces longitudinal movement of the cutting tip; measuring vacuum pressure; altering the duration of the first portion as vacuum pressure increases; and altering the duration of the second portion as vacuum pressure increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.