Patent ID: 7041107
Filing Date: 2006-05-09
Classification: A61B

Abstract:
1. An instrument for shaping a mouth part of a drilled tunnel provided in a bone, the instrument comprising a shaft having a longitudinal axis and a first and a second end and being hollow along its entire length, the first end of the shaft being provided with a projection, which includes two blades that are immobile with respect to the shaft for shaping the mouth part of the drilled tunnel when the instrument is turned around the longitudinal axis of the shaft, all of the blades on the projection being positioned on one side of a plane that divides the shaft into two halves, wherein the instrument is asymmetric at an intersecting surface perpendicular to the longitudinal axis and intersecting with the blade, and wherein the instrument shapes the surfaces surrounding the first end only substantially within an area corresponding with a turning angle of such a turning movement.