Device to locate in situ through-holes in a hollow pin that is implanted into the medullary canal for the retention of the fragments of a fractured bone

摘要

this allows you to find the axes of the transverse holes (t1 and t2) of the guide pin through a bore (6) without the need to see the holes or the use of x rays.to this end, the guide bore (6) is adjustable on a frame (3) with two degrees of freedom, the adjustment is carried out according to position information relative to the hole axis (t1, t2) and detected by means of sensors (14) which can be inserted into the pin (b)).these probes are mechanical and / or use a spurious pulse such that the light may be traumatic.