Patient-specific acetabular guide for anterior approach
First Claim
1. An orthopedic device for hip joint arthroplasty comprising:
- a patient-specific acetabular guide having a dome-shaped body that includes a peripheral annular rim and an outer three-dimensional surface configured to match an acetabulum of a specific patient'"'"'s hip joint, wherein the outer three-dimensional surface is reconstructed from three-dimensional medical images of the specific patient'"'"'s hip joint according to a preoperative plan for the specific patient;
a patient-specific registration guide configured to be removably attached to the peripheral rim and having surface that defines a longitudinal bore defining a patient-specific alignment axis with an alignment orientation configured for guiding an acetabular implant for the specific patient, the registration guide having a patient-specific undersurface configured to mate with a corresponding surface of periacetabular surface of the acetabulum of the specific patient according to the preoperative plan for the specific patient; and
a removable drill insert received in the longitudinal bore of the registration guide, wherein the removable drill insert includes an insert bore received concentrically within the longitudinal bore for guiding drilling along the alignment axis exterior to the patient-specific acetabular guide.
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Accused Products
Abstract
An orthopedic device includes a patient-specific acetabular guide that can be used for preparing an acetabulum of a patient to receive an acetabular implant. The acetabular guide has a dome-shaped body with a peripheral annular rim and an outer three-dimensional surface configured to match an acetabulum of a specific patient'"'"'s hip joint from three-dimensional medical images of the patient'"'"'s hip joint. A patient-specific registration guide is removably attached to the peripheral rim and has a longitudinal bore defining a patient-specific alignment axis with an alignment orientation configured for guiding an acetabular implant for the patient. The registration guide has a patient-specific undersurface configured to mate with a corresponding surface of periacetabular surface of the acetabulum of the patient.
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Citations
19 Claims
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1. An orthopedic device for hip joint arthroplasty comprising:
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a patient-specific acetabular guide having a dome-shaped body that includes a peripheral annular rim and an outer three-dimensional surface configured to match an acetabulum of a specific patient'"'"'s hip joint, wherein the outer three-dimensional surface is reconstructed from three-dimensional medical images of the specific patient'"'"'s hip joint according to a preoperative plan for the specific patient; a patient-specific registration guide configured to be removably attached to the peripheral rim and having surface that defines a longitudinal bore defining a patient-specific alignment axis with an alignment orientation configured for guiding an acetabular implant for the specific patient, the registration guide having a patient-specific undersurface configured to mate with a corresponding surface of periacetabular surface of the acetabulum of the specific patient according to the preoperative plan for the specific patient; and a removable drill insert received in the longitudinal bore of the registration guide, wherein the removable drill insert includes an insert bore received concentrically within the longitudinal bore for guiding drilling along the alignment axis exterior to the patient-specific acetabular guide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An orthopedic device for hip joint arthroplasty comprising:
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a patient-specific acetabular guide having a dome-shaped body with a peripheral annular rim and an outer three-dimensional surface configured to match an acetabulum of a specific patient'"'"'s hip joint, wherein the outer three-dimensional surface is reconstructed from three-dimensional medical images of the patient'"'"'s hip joint according to a preoperative plan for the specific patient; a patient-specific registration guide configured to be removably attached to the peripheral rim and having a longitudinal bore exterior to the acetabulum defining a patient-specific alignment axis with an alignment orientation configured for guiding an acetabular implant for the specific patient within the acetabulum, the registration guide having a patient-specific undersurface configured to mate with a corresponding surface of a periacetabular surface of the acetabulum of the specific patient according to the preoperative plan for the patient; a plurality of spaced-apart registration hooks, each registration hook extending from and attached to the peripheral rim of the acetabular guide, each registration hook having a patient-specific undersurface configured to mate with a corresponding surface of an acetabular rim of the specific patient acetabulum according to the preoperative plan for the specific patient; and a removable drill insert received in the longitudinal bore of the registration guide wherein the removable drill insert includes an insert bore received concentrically within the longitudinal bore for guiding drilling drill bit along the alignment axis exterior to the specific acetabulum. - View Dependent Claims (15, 16)
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17. A method for hip joint arthroplasty comprising:
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inserting a patient-specific acetabular guide into an acetabulum of a patient such that a patient specific undersurface of a dome-shaped body of the acetabular guide mates as negative of a corresponding surface of the acetabulum and mating at least one patient-specific registration hook that extends from a peripheral rim of the acetabular guide to and over a portion of an acetabular rim of the acetabulum; inserting an alignment pin into the patient'"'"'s bone through a bore of a patient-specific registration guide removably attached to the peripheral rim of the acetabular guide, the registration guide preoperatively configured to define a patient-specific alignment orientation for inserting an acetabular implant; removing the acetabular guide without removing the alignment pin; and inserting an acetabular implant, after removing the acetabular guide, along an orientation parallel to the alignment pin. - View Dependent Claims (18, 19)
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Specification