An adjustable length tap assembly for drilling a hole into a...

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/16 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2505794

The present invention is directed to an adjustable self drilling tap assembly (10) and method for drilling and tapping bores in bone for use in orthopedic procedures to treat bone. The adjustable length tap assembly includes a shaft (22) having cutting threads (16) for drilling holes in bone, a stop collar (18) configured and dimensioned to be translatable along the longitudinal axis of the shaft, and a locking collar (20) comprising a member configured and dimensioned to be received over at least a portion of the stop collar. The locking collar preferably is configured and dimensioned to engage with the stop collar to adjustably set the effective length for the cutting threads and to prevent movement of the stop collar along the longitudinal axis of the shaft.

La présente invention concerne un système de taraudage (10) autoperceur réglable et un procédé pour percer et tarauder des orifices dans l'os, utilisés dans des procédures orthopédiques pour traiter des os. Le système de taraudage à longueur réglable comprend une tige (22) qui présente des filets coupants (16) pour percer des orifices dans l'os, un collier d'arrêt (18) de conception et de dimensions qui permettent sa translation le long de l'axe longitudinal de la tige, et un collier de blocage (20) comprenant un élément de conception et de dimensions qui lui permettent d'être mis en place sur au moins une partie du collier d'arrêt. Le collier de blocage a de préférence une conception et des dimensions qui permettent son couplage au collier d'arrêt afin d'établir de manière réglable la longueur réelle des filets coupants et d'éviter le déplacement du collier d'arrêt le long de l'axe longitudinal de la tige.

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