Liquid loss detection during laser eye surgery
US11253396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2019 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Aug 13, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/00825
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A laser eye surgery system that has a patient interface between the eye and the laser system relying on suction to hold the interface to the eye, the patient interface using liquid used as a transmission medium for the laser. During a laser procedure sensors monitor the level of liquid within the patient interface and send a signal to control electronics if the level drops below a threshold value. The sensor may be mounted on the inside of the patient interface, within a fluid chamber. Alternatively, a gas flow meter may be added to a suction circuit for the patient interface that detects abnormal suction levels indicating low fluid level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.