Segmented pliable intrastromal corneal insert

Details Segmented pliable intrastromal corneal insert Segmented pliable intrastromal corneal insert

A - Human Necessities

61

F

A61F 9/00 (2006.01) A61F 2/14 (2006.01) A61L 27/34 (2006.01) A61M 31/00 (2006.01)

Patent

CA 2168789

This invention is a pliable intrastromal corneal insert (10) designed to be inserted into an inter-lamellar channel made within the cornea of a mammalian eye. It is made of a physiologically compatible polymer and may be used to adjust corneal curvature and thereby correct vision abnormalities. The insert (10) or segment may also be used to deliver therapeutic or diagnostic agents to the corneal interior or to the interior of the eye. The insert (10) subtends at least a portion of a ring, or "arc", encircling the anterior cornea (33) outside of the cornea's field of view but within the cornea's frontal diameter. The invention also includes both a minimally invasive procedure for inserting one or more of the devices into the cornea (12) as well as the thus corrected eye.

L'invention concerne un insert souple (10), pour stroma cornéen, conçu pour être inséré dans un canal interlamellaire pratiqué dans la cornée d'un oeil de mammifère. On le fabrique avec un polymère physiologiquement compatible et il permet d'ajuster la courbure de la cornée et donc de corriger des anomalies de la vue. Cet insert (10) ou segment permet aussi de libérer des agents thérapeutiques ou diagnostiques à l'intérieur de la cornée ou de l'oeil. L'insert (10) sous-tend au moins une portion d'un anneau, ou "arc", qui encercle l'épithélium antérieur de la cornée (33), hors du champ de vision propre à la cornée mais à l'intérieur du diamètre frontal de celle-ci. L'invention porte aussi sur une procédure très peu invasive permettant d'insérer un ou plusieurs de ces dispositifs dans la cornée (12), ainsi que sur l'oeil ainsi corrigé.

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