Clamp for a spinal affixation device

Details Clamp for a spinal affixation device Clamp for a spinal affixation device

A - Human Necessities

61

B

A61B 17/70 (2006.01)

Patent

CA 2194966

The invention concerns a clamp for a spinal affixation device which has a base body crossed by a duct having a longitudinal axis for receiving a longitudinal support. The clamp includes a substantially planar extension continuing the base body and crossed by a screw hole having a center axis for receiving a bone screw. The duct can longitudinally and rotationally lock in place a longitudinal support which is inserted therein. The longitudinal axis of the duct and the center axis of the screw hole form skewed straight lines of constant spacing at a distance in the range of 4 to 10 mm.

L'invention concerne une mâchoire de serrage de dispositif de contention pour la colonne vertébrale, comprenant un corps de base (1) pourvu d'un canal traversant (2) dans l'axe longitudinal (3), destiné à recevoir un support longitudinal, ainsi qu'un prolongement (4) sensiblement plan, relié audit corps de base (1) et pourvu d'un trou à vis (5) dans l'axe central (6), destiné à recevoir une vis à os. Le canal (2) est pourvu de moyens permettant de bloquer un support longitudinal introduit dans ce canal, de façon à empêcher son déplacement longitudinal ou sa rotation. L'axe longitudinal (3) et l'axe central (6) forment des lignes droites obliques séparées par une distance (7) qui ne varie pas et reste dans la plage 4 - 10 mm.

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