Tonometry apparatus
US4951671A · kind A · utility
Inventor
Key dates
| Filing date | Aug 23, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Aug 23, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus for measuring pressure within an eye, includes an air chamber having a deformable wall portion, the air chamber being operatively coupled to a pressure sensor for measuring the pressure within the air chamber, a member interposable between a surface of the eye and the deformable wall portion, the member having a rear end arranged and adapted to inwardly deform the deformable wall portion and a front end arranged and adapted to inwardly deform the eye surface when the member is interposed between the eye surface and the deformable wall surface and the air chamber is moved relative to the eye surface in a direction that shortens the distance between the eye and the air chamber. Also, apparatus for measuring the pressure within an eye, includes a member having a front end arranged and adapted to deform the eye surface when the member is pressed inward upon the eye surface, a force sensor arranged and adapted to measure the force required for the front end to deform the eye surface to a specified degree, and an alignment sensor including a plurality of contacts affixed to the member and an element adapted and arranged to form electrical contact with one of the contacts when t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.