Method and device to improve aqueous humor drainage in an eye

Details Method and device to improve aqueous humor drainage in an eye Method and device to improve aqueous humor drainage in an eye

A - Human Necessities

61

F

A61F 9/007 (2006.01) A61F 2/06 (2006.01)

Patent

CA 2244646

The present invention relates to a method to improve aqueous humor drainage in an eye with a canal of Schlemm in which eye the aqueous humor secreted by the ciliary body is drained through the subsequent outflow pathways and to a device to maintain aqueous humor drainage. By means of a medium injected in the form of a hydrophilic liquid or a biocompatible gaseous medium or a mixture of the hydrophilic liquid and the gaseous medium into the canal of Schlemm microsurgically exposed at one or more locations, the canal of Schlemm is locally expanded by means of the increased hydraulic pressure. With a support element subsequently implanted in the lumen of the canal of Schlemm, the inner walls of this canal are supported and permanently held in an expanded position, whereby unimpeded drainage of the aqueous humor from the canal of Schlemm through the subsequent outflow pathways is ensured.

Méthode visant à améliorer le drainage de l'humeur aqueuse dans un oeil par le canal de Schlemm. Selon cette méthode, l'humeur aqueuse sécrétée par le corps ciliaire est drainée dans les voies d'évacuation subséquentes vers un dispositif, afin de poursuivre le drainage. En injectant une substance, sous forme d'un liquide hydrophile ou d'une substance gazeuse biocompatible ou encore un mélange des deux, dans le canal de Schlemm exposé microchirurgicalement à un ou plusieurs endroits, le canal de Schlemm est élargi localement par la pression hydraulique accrue. Au moyen d'un élément de support implanté subséquemment dans la lumière du canal de Schlemm, les parois internes du canal sont supportées et tenues de façon permanente dans une position élargie. On peut ainsi assurer un drainage non-entravé de l'humeur aqueuse du canal de Schlemm par les voies d'évacuation subséquentes.

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