Application of a system parameter as a method and mechanism for controlling eye chamber stability
US8425452B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2009 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Jul 30, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/00745
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A controller for a phacoemulsification system having a handpiece; an irrigation fluid source configured to supply an irrigation fluid to the eye; an aspiration source configured to aspirate the irrigation fluid from the eye through the handpiece; and a controller comprising a duration timer configured to provide a duration of an occlusion, the controller configured to: sense a value of an occlusion indicating parameter corresponding to an occlusion of the handpiece; measure a time since the occlusion of the handpiece; and control the aspiration source to the handpiece based at least in part on the measured time since the occlusion. The occlusion indicating parameter may be a vacuum level, an irrigation flow rate, and/or an aspiration flow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.