drain valve for implantation in the eye of a patient for the treatment of glaucoma

摘要

the invention relates to a drain valve (10) is surgically implantable in the eye of a patient (p) for the treatment of glaucoma, comprising a main body (11), and a drainage tube (12).connected to one end of the main body (11) designed to be implanted in the eye (a) so as to penetrate through the distal end into the anterior chamber (ac) of the eye globe (gb), to allow for the drainage of the aqueous humor to the outside (au), and the valve (10) is characterized by a series of improvements.including: (1) extracting a pattern (12a, 12b) of the drainage tube (12) to allow adjustment of the length (fl) of the drainage tube (12) during surgery to implant the valve (10); and (2) a section (12) and the flat plate drainage tube (12), 12a.(b) to reduce the dimensions in the radial direction (r) of the drainage tube (12) with respect to the surface of the eyeball (gb); 3) a connection between the free position (12f) end of drainage tube (12) to the interior of the globe. eye (i, i).and the remaining portion (12b) of the drainage tube (12); and (4) a series of bags of restraint or compartments (11b) formed along the lower surface (s) or soffit of the main body (11) in contact with the surface of the eyeball (gb)the bags down (11b) being associated with respective channels (11a) through the main body (11) of the valve and used to receive and retain the aqueous humor (au), in order to improve the lubrication of the eyeball in the zone of the valve, once established; (5) (e) diverging fan-shaped opening (11c) formed on the upper surface (s).that is not in contact with the eyeball, from the main body (11) of the valve, in order to provide the aqueous humor (ua), and to improve lubrication around the drain valve (10), once established; and 6) a modified configuration, compared to the conventional drain valve. (d) e so as to provide, during the operation, the positioning, closer to the iris.holes (11d) for insertion of the wire will be used to set the valve to the surface of the eyeball. thanks to these improvements, the drain valve (10) according to the invention provides significantly improved performance and higher than the currently known drainage valve used in the medical field for the treatment of glaucoma.