Patent ID: 8864689
Filing Date: 2014-10-21
Classification: A61B,A61F

Abstract:
1. Device for knee evaluation, comprising: a first plate having a rounded shape and a first hole, a second hole, a third hole and a fourth hole; said first hole of the first plate being threaded and being centrally located along a longitudinal axis (“a”) of the first plate; said second hole of the first plate being in a peripheral position and lying along an axis (“b”) perpendicular to axis (“a”) passing through the first hole of said first plate; said second hole being at a distance “l” with respect to the first hole of said first plate; said third hole being on the first plate at a distance “r” from the first hole; the third hole being located in the quadrant bounded by axis (“a”) and by the part of axis (“b”) on which the second hole of said first plate lying; said third hole of said first plate being positioned on a semiaxis (“d”), which departs by a few degrees from axis (“a”); said fourth hole being positioned on an axis perpendicular to axis (“a”) passing through the centre of the third hole of said first plate and located in the same quadrant; a femoral arm consisting in a rectangular shaped blade which ends being particularly shaped; the distal end of the femoral arm is partially cut as quarter-circle and the centre of the cut part being located at the intersection between the rear edge of the femoral arm and an axis (“b a tibial arm consisting in a rectangular shaped blade and a plate in a single body where the plate being the proximal end of the tibial arm; said tibial arm plate having a rounded shape and in the same lying a first opening and a second opening; said first tibial opening being rectangular in shape with rounded ends and is achieved by creating a hole in the centre of the plate of the proximal end of the tibial arm and proceeding distally along an axis (“a a second plate having a rounded shape and a first hole, a second hole, a third hole, a fourth hole and a fifth hole; said first hole of the second plate being centrally located along a longitudinal axis (“a a rounded shaped small plate; on the small plate a linear scale and an angular graduate scale being traced; said linear scale having a division in millimeters and being located along an axis “x” intersected by an axis “y”, orthogonal to axis “x”; the value 0 of the linear scale coinciding with the intersection between axes “x” and “y”, and the values increase proceeding towards the periphery of the small plate; said angular graduate scale having value 0 degrees on axis “y” and extends on the small plate counterclockwise in the diametrically opposite part to that in which the linear scale extending; the angular graduate scale for the first 30 degrees follows a circular pattern and the angular distribution corresponds to the goniometric one; from 30 degrees on, the angular graduate scale follows a spiral trend moving towards the centre with an increase in the distance between the notches proportional to axial displacement; said small plate having an opening extending for 180 degrees, a first end of which being located on axis “y” at a distance “l” from the intersection of axis “y” with axis “x” and towards value 0 degrees of the angular scale; the other end of the small plate opening lying on an axis “y the distal part of the femoral arm being superimposed on a part of the first plate so that axis (“a