Method and apparatus for controlling vacuum as a function of ultrasonic power in an ophthalmic phaco aspirator
US6425883B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1999 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Aug 11, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/0612
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An aspiration system that may include a control valve to allow a flow of fluid into an aspiration line and vary a vacuum pressure within the line. The system may include a pressure transducer that is coupled to the aspiration line by a sensor line and a check valve. The check valve prevents a back flow of fluid from the aspiration line to the pressure line. The system may further have a control circuit that is coupled to the pressure transducer and the control valve. The control circuit may control the control valve and regulate the vacuum pressure within the aspiration line. The control circuit may receive an input signal that also controls a medical handpiece. The input signal can be generated by a foot pedal that also controls the handpiece. The system may thus have one foot pedal that can control the handpiece and the vacuum pressure of the aspiration line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.