Patent ID: 8016835
Filing Date: 2011-09-13
Classification: A61B

Abstract:
1. A guidance system for use while inserting an implant, the guidance system comprising: a trajectory guide defining a path configured to align with a trajectory for guiding instruments along the trajectory and restricting the instruments to movement along the trajectory, the trajectory guide comprising: a movable support for moving the clamp of the trajectory guide to a selected position and angular orientation, the moveable support being configured such that the position and angular orientation of the trajectory guide is coarsely adjusted by hand; and a fine adjustment system mounted to the movable support and connected to the clamp of the trajectory guide, the fine adjustment system configured to move the clamp of the trajectory guide such that the trajectory guide is aligned precisely with a desired location and orientation, wherein the fine adjustment system includes a first control for translating the clamp and the cannula along a second axis and rotating the clamp and the cannula around a third axis, and a second control for translating the clamp and the cannula along the third axis and rotating the clamp and the cannula around the second axis, the second axis being perpendicular to the third axis, the second and third axes being perpendicular to the first axis, wherein the first control comprises first and second concentric portions, the first concentric portion controlling translation of the clamp and the cannula along the second axis, the second concentric portion controlling rotation of the clamp and the cannula around the third axis, wherein the second control comprises third and fourth concentric portions, the third concentric portion controlling translation of the clamp and the cannula along the third axis, the fourth concentric portion controlling rotation of the clamp and the cannula around the second axis.