Device for holding a cornea taken from a donated eye
US4865033A · kind A · utility
Inventors
Key dates
| Filing date | Aug 7, 1987 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Aug 7, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/142
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The device by means of which a cornea taken from a donor eye is held for processing. The cornea is placed on a round substrate having a central opening. The edge of the cornea is pressed by an annular retaining ring against the substrate. A cavity between the substrate and the pressed cornea is filled with a fluid medium introduced through a central bore in the substrate under a predetermined pressure. The upper end of a base is formed with external threads and, has a central recess for inserting a cylindrical bearing member formed with a central bore. The bearing member is provided with a bevelled upper edge against which the cornea for processing is pressed by a clamping ring whose inner opening tightly clamps the edge of the cornea against the upper edge of the bearing member. The required contact pressure is produced by screwing a tension ring on to external threads on the base. The tension ring acts on the surface of the clamping ring. The central opening of the base can be connected to a source of pressure medium at an adjustable pressure. The pressure medium can be air or a hydraulic fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.