Patent ID: 8734455
Filing Date: 2014-05-27
Classification: A61B,A61F,B33Y,G05B,Y02P

Abstract:
1. A surgical guide tool for use in hip resurfacing surgery on a proximal portion of a femur having a head, a neck extending distally from the head, a surface region distal the head, a bone axis extending through centers of the head and neck, a superior-posterior region of the neck including a narrow band that follows along an intertrochanteric crest, a superior-anterior region of the neck, a cartilage covering the head, a tubercle, an anterior greater trochanter, an origin of a obturator internus, a superior junction between the posterior and anterior surfaces of the neck, and a trochanteric fossa, the tool comprising: a body including a guide hole and a mating region configured to matingly contact the surface region, the guide hole including a hole axis, the guide hole and mating region being positioned relative to each other so the hole axis is generally coaxially aligned with the bone axis when the mating region matingly contacts the surface region, wherein the mating region is generally an identical negative shape of the surface region that includes: a first area that includes the at least a portion of the superior-posterior region of the neck including the narrow band that follows along the intertrochanteric crest and has the medial-lateral width of between approximately 0.5 mm and approximately 8 mm; a second area that includes the at least a portion of the superior-anterior region of the neck starting between approximately 1 mm and approximately 5 mm after the cartilage covering the head terminates distally and extending between approximately 15 mm and approximately 35 mm to terminate before the tubercle; and a third area that includes the region on the anterior greater trochanter, distal to the tubercle, and inferior to the origin of the obturator internus; wherein the first area, the second area, and the third area are each separated by points of non-contact between the mating region and the surface region.