Tip formation for inserting a flexible membrane into an eye

A - Human Necessities – 61 – F

Patent

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A61F 9/00 (2006.01) A61F 2/16 (2006.01)

Patent

CA 2267324

A tip formation (18) for an instrument for inserting a flexible membrane (37) into an eye is formed at the distal end (22) of a cannula (16). The cannula (16) has a lumen (18) which directs the flexible membrane (37) through an incision and into the eye. The distal end (22) is beveled so as to provide ease of entry into the incision, and to orient the discharge opening for the flexible membrane (37) at an inclination to the longitudinal axis of the lumen (18). The cannula walls (24) about the beveled end (22) are tapered to form a smaller sized end without impeding the advance of the membrane (37).

Bout (18) d'un instrument servant à introduire une membrane souple (37) dans l'oeil, situé à l'extrémité distale (22) d'une canule (16). Cette canule (16) possède une lumière (18) dirigeant la membrane souple (37) à travers une incision et vers l'intérieur de l'oeil. L'extrémité distale (22) est taillée en biseau, de manière à faciliter l'entrée dans l'incision et à orienter l'ouverture d'introduction de la membrane souple (37) de façon inclinée par rapport à l'axe de la longueur de la lumière (18). Les parois (24) de la canule autour de l'extrémité (22) taillée en biseau, sont rétrécies de façon conique afin de constituer une extrémité de dimension inférieure sans gêner l'avance de la membrane.

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