Method and apparatus for hip prosthesis

Details Method and apparatus for hip prosthesis Method and apparatus for hip prosthesis

A - Human Necessities

61

F

A61F 2/32 (2006.01) A61B 17/86 (2006.01) A61F 2/00 (2006.01) A61F 2/08 (2006.01) A61F 2/30 (2006.01) A61F 2/34 (2006.01) A61F 2/36 (2006.01) A61F 2/46 (2006.01)

Patent

CA 2262407

This invention is a prosthesis (10) for allowing natural ball and socket type movement, as in a hip or shoulder. A femoral component (20) having a ball (22) at one extremity is engaged with an acetabular component (60) having a hemispherical cup (62) to receive the ball (22). A ligamentous material (80) extends from a port (70) in the hemispherical cup (62) to a port (32) in the ball (22) to apply a resistive force to resist any dislocating force, the resistive force varying in proportion to the movement of the femoral component (20) from a natural and relaxed position in relation to the acetabular component (60).

Cette invention concerne une prothèse (10) permettant un mouvement naturel de type à articulation sphérique, comme dans une hanche ou une épaule. Un composant fémoral (20) ayant une sphère (22) à une extrémité est couplé à un composant acétabulaire (60) ayant une coupole hémisphérique (62) destinée à recevoir la sphère (22). Un matériau ligamentaire (80) part d'un orifice (70) ménagé dans la coupole hémisphérique (62) vers un orifice (32) ménagé dans la sphère (22) afin de générer une force de résistance contre toute force de dislocation, cette force de résistance variant proportionnellement au mouvement du composant fémoral (20) à partir d'une position naturelle et de relaxation par rapport au composant acétabulaire (60).

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