Abstract: A medical device for glaucoma surgery includes a tubular body provided with a through cavity extending from a proximal end to a distal end. The tubular body has a first proximal positioning means at the proximal end, and a second distal positioning means at the distal end. The tubular body has at least one proximal filtration hole, located on the side of the proximal end, and at least one distal filtration hole, located on the side of the distal end, the proximal and distal holes being fluidically connected to each other by the through cavity. The proximal and distal filtration holes are at least partially or completely occluded by a membrane made of resorbable material at least partially removable by selective action, so as to allow selective variation of the amount of aqueous humor flow removable via the through cavity.

Abstract: The present invention relates to a process for the preparation of articles of manufacture made of or based on sulphur, which comprises cooling of liquid sulphur in a volume of containment until the sulphur mass solidifies and forming of the product, characterized in that elastic pressure waves are applied to the cooling mass of liquid sulphur to produce a crystalline suspension of solid sulphur in liquid sulphur.

Abstract: The present invention relates to a process for the preparation of articles of manufacture made of or based on sulphur, which comprises cooling of liquid sulphur in a volume of containment until the sulphur mass solidifies and forming of the product, characterised in that elastic pressure waves are applied to the cooling mass of liquid sulphur to produce a crystalline suspension of solid sulphur in liquid sulphur.