Eye filtration prostheses

Details Eye filtration prostheses Eye filtration prostheses

1992-11-03

1994-07-05

Green, Randall L.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Eye prosthesis

604 9, 604294, A61F 214, A61M 500, A61M 3500

Patent

active

053263456

ABSTRACT:
A technique and device for relieving intraocular pressure with a reduced risk of inflammation that may be caused by retrograde flow back into the eye. A unidirectional drainage device is implanted which allows fluid to flow away from the eye with a minimal pressure gradient (5 mm Hg. or less), and includes means to prevent retrograde flow. When implanted, the drainage passageway is initially restricted by a flow restrictor. After fibrosis has occurred to prevent excessive drainage that might cause hypotony, the flow restrictor is severed to allow the free flow of fluid away from the eye, with inflammatory debris being prevented from reentering the eye. In one embodiment, the flow restrictor includes barbs which hold it to the device after it has been severed, thereby preventing the flow restrictor from floating freely within the eye after it has been cut.

REFERENCES:
patent: 5171213 (1992-12-01), Price, Jr.

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