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US 11,224,517 B2Granted
Mechanically coupled revision hip system and method
AssigneeDePuy Synthes Products, Inc.
InventorsJason B. Langhorn, Chase R. Maag
Life of this patent
Estimating the term…
Abstract
An acetabular hip implant includes a plurality of rings secured to an acetabular shell component. A method of fabricating a customized, patient-specific version of such an implant is also disclosed.
Claims20
An acetabular hip implant comprising:
- an acetabular shell component configured to be implanted within an acetabulum of a patient,
- a first ring extending around a first longitudinal axis and secured to the acetabular shell component, the first ring including an inner surface and an outer surface and defining (i) a first closed track extending circumferentially around the first ring and radially through the inner surface and the outer surface of the first ring, and (ii) a second closed track located opposite the first closed track and extending circumferentially around the first ring and radially through the inner surface and the outer surface of the first ring,
- a second ring extending around a second longitudinal axis and including an inner surface, an outer surface, a first pin extending from the second ring along a first rotational axis into the first closed track, and a second pin extending from the second ring along the first rotational axis into the second closed track, the second ring defining (i) a third closed track extending circumferentially around the second ring and radially through the inner surface and the outer surface of the second ring, and (ii) a fourth closed track extending circumferentially around the second ring and radially through the inner surface and the outer surface of the second ring,
- a third ring extending around a third longitudinal axis and including a third pin extending from the third ring along a second rotational axis into the third closed track and a fourth pin extending from the third ring along the second rotational axis into the fourth closed track.
1 more element
An acetabular hip implant comprising:
- an acetabular shell component configured to be implanted within an acetabulum of a patient,
- a first ring extending around a first longitudinal axis and secured to the acetabular shell component,
- a second ring extending around a second longitudinal axis, the second ring (i) operable to rotate relative to the first ring about the first longitudinal axis and a first rotational axis perpendicular to the first longitudinal axis and (ii) prevented from rotating relative to the first ring about any additional axis, and
- a third ring extending around a third longitudinal axis, the third ring (i) operable to rotate relative to the second ring about the second longitudinal axis and a second rotational axis perpendicular to the second longitudinal axis and (ii) prevented from rotating relative to the second ring about any additional axis.
1 more element
A method of fabricating a customized patient-specific acetabular hip implant comprising:
- determining a desired range of motion for a patient's hip,
- selecting a first ring having a first pair of closed tracks defined therein and extending circumferentially around the first ring a first patient-specific distance, the first patient-specific distance based on the desired range of motion for the patient's hip,
- selecting a second ring having a second pair of closed tracks defined therein and extending circumferentially around the second ring a second patient-specific distance, the second patient-specific distance based on the desired range of motion for the patient's hip,
- securing the second ring to the first ring,
- securing a third ring of the customized, patient-specific acetabular hip implant to the second ring, and
- securing the first ring to an acetabular shell component configured to be implanted within the acetabulum of the patient.
3 more elements
Dependencies are inferred from the claim text.