Abstract: The invention relates to a medical device for supporting an implant or prosthesis, formed by two parts including one part forming an upper ring (1) which is made from a rigid or semi-rigid solid biocompatible material and another part forming a lower ring (2) which is made from a rigid or semi-rigid, integrable or porous biocompatible material, said device being intended to receive an implant or a removable prosthesis at the upper ring and to be installed in situ by means of the lower ring.

Abstract: The invention relates to a medical device for supporting an implant or prosthesis, formed by two parts including one part forming an upper ring (1) which is made from a rigid or semi-rigid solid biocompatible material and another part forming a lower ring (2) which is made from a rigid or semi-rigid, integrable or porous biocompatible material, said device being intended to receive an implant or a removable prosthesis at the upper ring and to be installed in situ by means of the lower ring.

Abstract: The invention concerns a method for obtaining a metal implant for open porosity tissue support and/or replacement, characterized in that it comprises the following steps: (i) selecting a mould, (ii) arranging in the mould a solid metal core (7), (iii) filling the volume of the mould (1) still available with a powder of microspheres (3), (iv) consolidating the microspheres (3) with each other as well as with said at least one solid core (7) by electrical discharge sintering.

Abstract: The present invention relates to a valve device designed to be implanted in a dysfunctional larynx or in a prosthetic larynx. The valve device has a distal portion forming an annular support structure and a central portion forming an obturator. The obturator includes i) a peripheral part forming a first valve integral with the annular support structure in a first hinge region, and ii) a central part forming a second valve integral with the first valve in a second hinge region.

Abstract: The present invention relates to a valve device designed to be implanted in a dysfunctional larynx or in a prosthetic larynx, said device comprising a distal portion forming an annular support structure and a central portion forming an obturator, characterized in that said obturator comprises i) a peripheral part forming a first valve integral with the annular support structure in a first hinge region, and ii) a central part forming a second valve integral with the first valve in a second hinge region.

Abstract: An implant being urged to be positioned between the thyroid cartilage (22) and a vocal cord (20) so as to displace the latter in order to restore the speech to a patient, characterized in that it comprises: i) a “prosthesis” (3) being urged to rest on the muscle of the vocal cord (20), ii) a “counterplate” (5) resting on the internal wall of the thyroid cartilage (22), and iii) a liking element (7) of the prosthesis (3) and the counterplate (5), said counterplate (5) being mobile on said at least one linking element (7), thus enabling the adjustment of the distance D between the prosthesis (3) and the counterplate (5) to maintain the implant (1) in place.

Abstract: The invention concerns a method for obtaining a metal implant for open porosity tissue support and/or replacement, characterized in that it comprises the following steps: (i) selecting a mould, (ii) arranging in the mould a solid metal core (7), (iii) filling the volume of the mould (1) still available with a powder of microspheres (3), (iv) consolidating the microspheres (3) with each other as well as with said at least one solid core (7) by electrical discharge sintering.

Abstract: The invention relates to a material providing support and/or replacement of living tissues and the use thereof for manufacturing prostheses. The material according to the invention comprises microparticles of a biomaterial coated with polyelectrolyte multilayers containing one or more biologically active products.

Abstract: The invention concerns a phonatory implant (1) consisting of a central portion (3) forming a hollow cylindrical body having at each of its ends a lateral portion (5, 7) forming a shoulder or flange, said implant (1) being urged to be positioned in an opening or fistula running through the tracheoesophageal wall (9), each lateral portion (5, 7) abutting respectively at the inner surfaces of the walls of the trachea (13) and of the esophagus (11) so as to maintain the implant (1) in position, said phonatory implant (1) consisting of at least two parts (A, B), at least one of the two parts being called mobile part (B), and each lateral portion (5, 7) being arranged on a different part of the implant (1) so as to enable the implant to be inserted through an opening of reduced size corresponding to the diameter of the central portion.

Abstract: A process for forming metal components of controlled porosity by welding, in which a predetermined amount of metal elements (50) of oblong shape is introduced into a mold (10) in which it is distributed isotropically. The metal elements are then subjected to increasing pressure (P) until the component has its final shape. The walls of the mold are then held in position and an electric current (I) flows through the metal elements and welds them together by local melting at the points of contact due to the Joule effect.

Abstract: The invention concerns a method for producing a flame support for a gas burner, which consists in producing disjointed metal fibres (10) in an alloy comprising iron, chromium and aluminium; assembling the fibres together under pressure; bringing the fibre mat to a temperature sufficient to ensure a close bonding between the fibres. The invention is characterised in that it consists in feeding said metal alloy to an overflowing tank (3), to produce the fibres by cooling in contact with a mobile wheel (7); then in arranging in a moulding matrix the resulting disjointed fibres (10) and compressing them to form an agglomerated mat; then in connecting the mat to electrodes and a capacitor, thereby bringing the fibres (10), at their points of contact, to a temperature not less than their melting point, to produce fibres closely welded together, under high voltage.

Abstract: A nickel-based superalloy possessing good mechanical properties when hot regarding traction, creep and cracking resistance has a chemical composition which comprises, in percentages by weight: Co 14.5 to 15.5 ; Cr 12 to 15 ; Mo 2 to 4.5 : Al 2.5 to 4; Ti 4 to 6; Hf not more than 0.5 ; C 100 to 300 ppm; B 100 to 500 ppm; Zr 200 to 700 ppm; possibly W up to 4.5; and nickel as the remainder. Components made from these alloys have an excellent microstructural stability when operating at temperatures up to 800.degree. C.

Abstract: Tantalum-based and niobium-based alloys made up entirely of a crystalline medium exhibiting a substantially continuous centered cubic structure, comprising an intermetallic compound of formula Ti.sub.2 AlMo, and having the following compositions on an atomic basis:______________________________________ Ta + Cr 20 to 35% Cr 0 to 5% Ti 20 to 40% Al 8 to 20% Mo 8 to 20%, ______________________________________wherein the concentration of Ta is less than 30%; and ______________________________________ Nb + Cr 20 to 60% Cr 0 to 5% Ti 20 to 40% Al 8 to 20% Mo 8 to 20%. ______________________________________ .

Abstract: A niobium and titanium based alloy having a density less than 6.5 and possessing a high resistance to oxidation at high temperatures in the region of 900.degree. C. has a chemical composition comprising, in atomic percentages:more than 24% Nbfrom 30 to 48% Tifrom 21 to 38% Aland possibly up to 8% of at least one of Cr, Mo, V and Zr.

Abstract: An element is disclosed for filtering and/or purifying hot gases, comprising a fibrous structure with a predetermined degree of porosity and formed of metal alloy fibrils of the MCrAlX type, in which M is a matrix chosen from iron and/or nickel and/or cobalt, and X is an element reinforcing the adhesion of the oxide layer which is formed on the fibrils in contact with the hot gases, chosen from zirconium, yttrium, cerium, lanthanum and misch metal.

Abstract: Superalloy with a nickel base matrix having good mechanical properties when ot in respect of tensile strength, creep resistance, low cycle fatigue and resistance to crack-propagation of which the composition in percentages by weight is as follows: Cr 11 to 13; Co 8 to 17; Mo 6 to 8; Nb less than or equal to 1.5; Ti 4 to 5; Al 4 to 5; Hf less than or equal to 1; C, B, Zr each less than or equal to 500 ppm; Ni remainder to 100. The alloy can be manufactured advantageously by powder metallurgy techniques and used in the manufacture of turbo machine disks.

Abstract: A process for forming a titanium base alloy comprises compacting a powder formed of particles of titanium or of a mother alloy thereof and of a dispersion of fine particles of a product curbing the growth of the grain size, in a proportion per volume which is less than that which would lead to the formation of a continuous layer of fine particles about the particles of titanium powder. Then the alloy is heat treated at a temperature higher than the point of transformation into phase .beta. and quenched. The product is typically selected among S, P, B, As, Se, Te, Y and the lanthanides.