Device for externally immobilizing broken bones

Details Device for externally immobilizing broken bones Device for externally immobilizing broken bones

A - Human Necessities

61

B

A61B 17/64 (2006.01) A61B 17/00 (2006.01)

Patent

CA 2475650

The invention relates to a device for externally immobilizing broken bones, particularly bones of the extremities. According to the invention, interspaced bone pins (9), which are provided for insertion into the bone while passing through the skin and soft-tissue mantle are arranged on a multi-articulation rod. This multi-articulation rod can be placed on the outside of the body while extending along a broken bone and comprises elements (1), which are interconnected in a ball-and-socket type manner and which can be fixed in selected relative positions. The elements (1) have a ball (2) on one end and a ball socket (3) on the other end, and the ball (2) of one element is located inside the ball socket (3) of an adjacent element. The ball and ball socket each geometrically extend over more than one hemisphere, and the surfaces of the ball (2) and ball socket (3) are roughened.

L'invention concerne un dispositif de fixation externe d'os cass~s, en particulier d'os des extr~mit~s. Selon cette invention, des broches (9), destin~es ~ Útre introduites dans un os ~ travers la peau et le manteau de tissus mous, sont fix~es de fa×on espac~e ~ une tige pluriarticul~e, pouvant Útre install~e ~ l'ext~rieur du corps le long d'un os cass~. Cette tige est constitu~e d'~l~ments (1), reli~s les uns aux autres sous la forme d'une articulation ~ rotules et pouvant Útre fix~s dans des positions relatives s~lectionn~es. Ces ~l~ments (1) pr~sentent une rotule (2) sur une extr~mit~ et une cavit~ (3) sur leur autre extr~mit~, la rotule (2) d'un ~l~ment reposant dans la cavit~ (3) d'un ~l~ment adjacent. Ces rotules (2) et ces cavit~s (3) s'~tendent g~om~triquement sur plus d'un h~misph­re et pr~sentent une certaine rugosit~ de surface.

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