Patient-specific hip joint devices
AssigneeBiomet Manufacturing, LLC
InventorsTyler D. Witt, Jason D. Meridew, John R. White, Troy W. Hershberger, Robert Metzger
Life of this patent
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Abstract
A patient-specific acetabular resection guide includes a dome-shaped surface bounded by a periphery. The dome-shaped surface is a three-dimensional patient-specific surface designed to anatomically match and be received into an acetabulum of the patient, based on a three-dimensional image of a hip joint of the patient reconstructed from a medical scan of the hip joint. The resection guide includes a plurality of guiding formations defined on the resection guide and having patient-specific shapes and orientations for guiding corresponding osteotomies relative to the acetabulum for correcting hip dysplasia.
Claims20
A hip-joint device comprising:
- a patient-specific acetabular resection guide including:
- a dome-shaped surface bounded by a periphery, the dome-shaped surface is a patient-specific three-dimensional surface designed to anatomically match, and is adapted to be received into, an acetabulum of a pelvis of the patient in one position, based on a three-dimensional image of a hip joint of the patient reconstructed from a medical scan of the hip joint;
- and
- a plurality of guiding formations defined on the resection guide, the guiding formations having patient-specific shapes and orientations for guiding corresponding osteotomies relative to the acetabulum for resecting and separating the acetabulum from the pelvis, and enabling rotation of the acetabulum relative to the pelvis of the patient for correcting hip dysplasia of the patient.
A hip-joint device comprising:
- a patient-specific acetabular resection guide including:
- a dome-shaped surface bounded by a periphery, wherein the dome-shaped surface is a three-dimensional patient-specific surface designed to anatomically match, and is adapted to be received into an acetabulum of a pelvis of a patient, based on a three-dimensional image of a hip joint of the patient reconstructed from a medical scan of the hip joint;
- an annular flange extending from the periphery of the dome-shaped surface, the annular flange having a patient-specific bone-engaging surface engageable to a periacetabular area of the acetabulum of the patient, and
- a plurality of elongated slots defined by the flange and oriented around the periphery in a patient-specific orientation for guiding a cutting instrument to resect and separate the acetabulum from the pelvis in order to rotate the acetabulum relative to the pelvis.
A hip-joint device comprising:
- a patient-specific acetabular resection guide configured to guide resection of bone around the acetabulum and prepare the acetabulum to receive an implantable acetabular shell, the guide including:
- a dome-shaped surface bounded by a periphery, the dome-shaped surface is a patient-specific three-dimensional surface adapted to both anatomically match and be received into the acetabulum in one position based on a three-dimensional image of a hip joint of the patient reconstructed from a medical scan of the hip joint;
- an annular flange extending from a periphery of the dome-shaped surface, the annular flange includes a bone-engaging surface positionable on a periacetabular area of the hip-joint around the acetabulum;
- and
- a plurality of guiding formations defined through the annular flange, the guiding formations including patient-specific shapes and orientations for guiding corresponding osteotomies relative to the acetabulum for resecting and separating the acetabulum from the pelvis, and enabling rotation of the acetabulum relative to a pelvis of the patient to correct hip dysplasia of the patient.
Dependencies are inferred from the claim text.