摘要:
An expansive osteosynthesis implant comprises branches (5) connected by one of their ends to a tube cap (7) pierced by an orifice (8), which can be slid from the rear between the vertebral disks of two consecutive vertebrae, so as to maintain them at a set distance and restore the stability of the spinal column. Said branches (5) and said tube cap (7) define a hollow sheath which, in inoperative position, has a general cylindrical external shape with circular cross section and at least part of the internal volume (9) of the sheath (1) towards the distal ends of the branches (5), is in the shape of a revolving truncated cone with its larger base on the side of said tube cap (7). This implant comprises at least three branches (5) and at least one wedge (2) capable of passing into said orifice (8) and through the larger base of the truncated cone into said internal volume (9).
摘要:
Prothèse cotyloïdienne comprenant en combinaison :
un cotyle artificiel (2) qui comporte un certain nombre de fentes d'expansion (2 a ) régulièrement réparties sur sa périphérie, un appendice fileté (2 c ) prévu sur sa face externe et plus particulièrement en son pôle et un trou taraudé (2 d ) qui est percé au milieu de l'appendice (2 c ) et qui débouche à l'intérieur dudit cotyle ; un noyau intermédiaire (3) qui présente un diamètre extérieur (A) supérieur au diamètre interne (B) du cotyle, un doigt fileté (3 a ) qui coopére avec le trou taraudé (2 d ) du cotyle 2 et sur sa face interne une série d'encoches (3 b ) qui sont régulièrement réparties sur sa périphérie ; et un insert en matière plastique (4) qui comprend un certain nombre de dents (4 b ) qui coopèrent avec les encoches (3 b ) du noyau intermédiaire pour son positionnement et sa mise en place angulaire.
摘要:
The invention concerns an adjustable fixing device for straightening and supporting the bone system, in particular the back bone, comprising at least an anchoring element (1) with at least one part (5) capable of being fixed relative to the bone, a head (3) with an axis (XX'), an intermediate ring (9), and a blocking element (6) capable of being fixed on the head (3) end (7). The invention is characterised in that the surface (61) pressing the blocking element (6) against a clamping member (8) for locking in an orifice (10) lateral relative to the axis (XX') a rod connecting (4) several fixing devices, is hollow and spherical and the zone pressing (91) the intermediate ring against this clamping member (8) is an internal circular ridge; and said clamping member (8) consists of at least two separable parts (81, 82) each comprising a half-collar (121, 122) forming together said clamping orifice (10) and a part forming a bore (11) flange (131, 132) adapted to be threaded on said head (3) and whereof the external pressing surface (141, 142) has a spherical shape matching with the intermediate ring corresponding (9) pressing shapes and of the blocking element (6).