Surgery – Truss – Pad
Patent
1987-08-07
1989-09-12
Thaler, Michael H.
Surgery
Truss
Pad
128305, A61B 1700
Patent
active
048650331
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.
REFERENCES:
patent: 3421648 (1969-01-01), Giessler et al.
patent: 3827820 (1974-08-01), Hoffman
patent: 4077411 (1978-03-01), Ward
patent: 4660556 (1987-04-01), Swinger
Krumeich Jorg H.
Nordan Lee
Lewis William
Poff Clifford A.
Thaler Michael H.
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