Patent ID: 9119641
Filing Date: 2015-09-01
Classification: A61B,G01B

Abstract:
1. A device for guiding an instrument, tool or implant with respect to a three-dimensional body, the device comprising: a rod shaped member with a central axis, a rear end, a front end and a length L a radiopaque first targeting element having a first center, wherein said first targeting element is affixed directly on said rod shaped member coaxially to said central axis with said first center at a distance A a radiopaque second targeting element having a second center, wherein said second targeting element is fixed with respect to said rod shaped member coaxially to said central axis with said second center at a distance A wherein: said first targeting element has a first spherical surface portion directed toward said rear end of said rod shaped member and limited by an external surface of said rod shaped member, and a second spherical surface portion directed toward said front end of end of said rod shaped member, a cross-sectional area of said first targeting element orthogonal to said central axis and containing said first center has a circular periphery with a diameter D said second targeting element is annular and has a circular central line with a diameter D said second targeting element is fixedly attached to said rod shaped member by a radiolucent structure.