Rebound tonometer having tilt correction
US11717162B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 2018 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Jun 3, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2560/0238
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A rebound tonometer is improved by providing a tilt signal from a tilt sensor of the rebound tonometer to a signal processor of the rebound tonometer, and configuring the signal processor to apply a tilt correction factor to a basic IOP measurement value calculated by the signal processor to provide a final IOP measurement value, wherein the tilt correction factor depends on a tilt direction and a degree of tilt indicated by the tilt signal. The final reported IOP measurement value takes into account gravitational effects on the probe due to tilt. As a result, measurements made at relatively small tilt angles are now usable, thereby improving efficiency. A corresponding rebound tonometry measurement method, and a method of calibrating a rebound tonometer for tilt correction, are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.