Patent ID: 8328814
Filing Date: 2012-12-11
Classification: A61B

Abstract:
1. A surgical guiding instrument for a surgical machining tool which is configured for machining vertebral bodies and has a distal tool end, the guiding instrument comprising a substantially elongated instrument body having a proximal and a distal end and defining a longitudinal axis, the instrument body comprising a guiding device for the machining tool, wherein the guiding device comprises a first guiding element in the form of a guiding sleeve having an axis offset from the longitudinal axis of the instrument body, the guiding sleeve comprising a first end, a second end and a guide surface inside the guiding sleeve, the guiding sleeve further comprising a through-opening, the through-opening extending from the first end of the guiding sleeve to the second end of the guiding sleeve, the through-opening having a cross sectional area that decreases as the through-opening extends from the first end toward the second end, forming a narrowed section in the guiding sleeve that creates a pivot axis offset from and perpendicular to the longitudinal axis of the instrument body to positively guide the machining tool along a superimposed translational-pivotal movement in which the machining tool moves in a nonparallel direction in relation to the guiding instrument.