Intramedullary nail

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/74 (2006.01) A61B 17/78 (2006.01)

Patent

CA 2396385

The intramedullary nail (1) serves for fixating femoral fractures. It has a distal end (2) adapted to be inserted into the medullary canal, a proximal end (3), and a longitudinal axis (4). A first bore (5), situated closer to the proximal end (3) and obliquely intersecting the longitudinal axis (4), serves for receiving a femur head screw (10) , the central axis (6) of the first bore (5) forming an angle of between 110 and 150 degrees relative to the longitudinal axis (4) . A second bore (7), situated between the first bore (5) and the proximal end (3) and obliquely intersecting the longitudinal axis (4), serves for receiving a femur head pin (20). The second bore (7) is at least in part shaped in the form of an elongate hole with a width B and a length L > B, the length L of the elongate hole extending in the direction of the longitudinal axis (4).

L'invention concerne un clou intramédullaire (1) servant à traiter des fractures du fémur. Ce clou comporte une extrémité distale (2) déterminée pour être introduite dans le canal médullaire, une extrémité proximale (3), ainsi qu'un axe longitudinal (4). Un premier alésage (5) pratiqué au voisinage proche de l'extrémité proximale (3) et coupant transversalement l'axe longitudinal (4), sert à recevoir une vis de tête fémorale (10). L'axe médian (6) de ce premier alésage (5) forme un angle de 110 à 150 DEG par rapport à l'axe longitudinal (4). Un second alésage (7) pratiqué entre le premier alésage (5) et l'extrémité proximale (3) et coupant transversalement l'axe longitudinal (4), sert à recevoir une tige de hanche (20). Le second alésage (7) se présente au moins en partie sous forme de trou oblong, avec une largeur B et une longueur L > B, la longueur L du trou oblong s'étendant dans le sens de l'axe longitudinal (4).

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