extensor wire stirrup.

摘要

A stent wire bar consisting essentially of two arms articulated to each other and curved so that together affect the shape of a "U" each of which is provided at its end with a fastening means for the wire is tensioning producing the approach or separation of the two arms by the rotation of a double nut disposed therebetween and which are screwed or simultaneously unscrewed two rods provided with threads in opposite integral each of a branch of the stirrup .