ACETABULAR IMPLANT AND METHOD FOR THE PRODUCTION OF SAID IMPLANT

• Main Authors: HOVY, LOUIS, SETIEY, LOUIS, BALAY, BRUNO, CHARLET, CLAUDE, FESSY, MICHEL-HENRI, MACHENAUD, ALAIN, ZANELLO, SYLVAIN, VIDALAIN, JEAN-PIERRE, CARTILLIER, JEAN-CLAUDE, WITZEL, ULRICH, CHATELET, JEANRISTOPHE, SEMAY, JEAN-MARC
• Format: Patent
• Language: English; French
• Published: 10.02.2005
• Edition: 7
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; TREATMENT OR PROTECTION OF EYES OR EARS

A cotyloid implant comprising a screwable cup receiving an articular insert. The cup is provided with screwing means (11) on the periphery thereof and more particularly in the equatorial area (2) thereof, said means being used to penetrate the bone material of the acetabular cup during screwing. The cup includes an osteointegration-facilitating coating such as a selective calcium hydroxyapatite coating. The invention is characterized in that the coating (16) is a thick coating on the convex parts of the outer surface of the cup, including areas or valleys or hollow thread elements which are left free in the screwing means. The coating is not as thick (17) or is even absent on raised areas or screw thread areas. Implant cotyloïdien du type comprenant une cupule à visser recevant un insert articulaire, ladite cupule présente à sa périphérie, et notamment dans sa zone équatoriale (2) des moyens de vissage (11) destinés à pénétrer dans la matière osseuse du cotyle lors du vissage, ladite cupule porte un revêtement facilitant l'ostéointégration, tel que, notamment, un revêtement d'hydroxyapatite de calcium sélectif, caractérisé en ce que le revêtement (16) est de type épais sur les parties convexes de la surface externe de la cupule, y compris dans les zones ou vallées ou creux de filets laissés libres dans les moyens de vissage, tandis que ce revêtement présente une épaisseur inférieure (17), ou est même absent, sur les reliefs ou filets de vissage.