Patent ID: 8986315
Filing Date: 2015-03-24
Classification: A61B

Abstract:
1. An aiming arm configured to be aligned with an implant, the aiming arm comprising: a body defining at least one aperture, the aperture defining a central axis that extends along a first plane, the central axis intersecting a major axis of the body that lies in the first plane, the body defining at least first and second straight linear radio-opaque markers, wherein the first and second straight linear radio-opaque markers extend in a second plane and are spaced from each other along the second plane, the second plane being parallel to the first plane, and each of the first and second straight linear radio-opaque markers defines a respective location, such that the location of the first straight linear radio-opaque marker is offset with respect to the location of the second straight linear radio-opaque marker along both a direction that is substantially parallel to the central axis of the at least one aperture, and a direction that is parallel to the major axis, wherein when a radiographic image is taken of the aiming arm from a first viewpoint such that the aiming arm is aligned with a source of the radiographic image, the first and second straight linear radio-opaque markers combine to define an unbroken substantially straight line, and when a radiographic image is taken of the aiming arm from a second viewpoint different from the first viewpoint, the first and second straight linear radio-opaque markers combine to define a jagged line.