Patent ID: 8821501
Filing Date: 2014-09-02
Classification: A61B

Abstract:
1. A patella resection guide comprising a first arm, a second arm, a connecting member, a cooperative locking mechanism associated with the first arm and the second arm for releasably locking the first and second arms in a desired position, wherein: each arm has a first end and a second end spaced from the first end; each arm has a first portion extending from the first end and a second portion extending from the second end toward the first portion; the first end of the first arm is pivotably connected to the connecting member about a first pivot axis; the first end of the second arm is pivotably connected to the connecting member about a second pivot axis; the first portion of the first arm is pivotably connected to the second portion of the first arm about a third pivot axis; the first portion of the second arm is pivotably connected to the second portion of the second arm about a fourth pivot axis; the first pivot axis, second pivot axis, third pivot axis and fourth pivot axis are parallel to each other; the first portion of the first arm includes a first bone gripping member extending toward the first portion of the second arm; the first portion of the second arm includes a second bone gripping member extending toward the first portion of the first arm; the first bone-gripping member and second bone-gripping member lie in a plane that is substantially perpendicular to the first pivot axis, second pivot axis, third pivot axis and fourth pivot axis and define a space therebetween to receive a patella; the first bone-gripping member and the second bone-gripping member are spaced apart by a distance; the first arm includes a first planar resection guide surface substantially parallel to the plane of the first bone-gripping member; the second arm includes a second planar resection guide surface substantially parallel to the plane of the first bone-gripping member; pivoting the portions of the first and second arms about the first pivot axis, second pivot axis, third pivot axis and fourth pivot axis move the first bone-gripping member and second bone-gripping member toward and away from each other to vary the distance between the first bone-gripping member and the second bone-gripping member; and the connections defining the first pivot axis, second pivot axis, third pivot axis and fourth pivot axis comprising living hinges.