Patient-specific acetabular alignment guides
First Claim
1. An acetabular device comprising:
- a patient-specific acetabular alignment guide including;
a bone engagement surface having first and second portions, the first portion configured and shaped to be conforming and complementary to an acetabular rim surface of a specific patient and the second portion configured and shaped to be conforming and complementary to a periacetabular area of an acetabulum of the specific patient in accordance with a three-dimensional periacetabular area of a three-dimensional model of the acetabulum of the specific patient reconstructed pre-operatively from an image scan of the patient, wherein the first portion completely extends around the entire inner rim surface to define an opening such that the entire acetabulum is accessible through the first portion, and the second portion completely extends around the entire periacetabular area; and
a plurality of guiding formations extending through the second portion for guiding a plurality of alignment pins therethrough, wherein the plurality of guiding formations are arranged and configured relative to the periacetabular area based on a pre-operative plan for the patient; and
a patient-specific alignment adapter couplable to an acetabular instrument, the patient-specific alignment adapter having a plurality of openings located at patient-specific locations, each of the plurality of openings configured to align with a respective one of the plurality of guiding formations;
wherein the patient-specific alignment adapter comprises first and second arms, each of the first and second arms including at least one of the plurality of openings; and
wherein the first arm and the second arm are parallel to each other.
0 Assignments
0 Petitions
Accused Products
Abstract
An acetabular device includes a patient-specific acetabular alignment guide including a bone engagement surface. The bone engagement surface has a first portion configured and shaped to be conforming and complementary to an acetabular rim surface and a second portion configured and shaped to be conforming and complementary to a periacetabular area of an acetabulum of a patient. The acetabular alignment guide includes a plurality of guiding formations extending through the second portion for guiding a plurality of alignment pins therethrough. The bone engagement surface and the plurality of guiding formations are prepared from a three-dimensional model of the acetabulum of the specific patient reconstructed pre-operatively from a scan of the patient.
1659 Citations
19 Claims
-
1. An acetabular device comprising:
-
a patient-specific acetabular alignment guide including; a bone engagement surface having first and second portions, the first portion configured and shaped to be conforming and complementary to an acetabular rim surface of a specific patient and the second portion configured and shaped to be conforming and complementary to a periacetabular area of an acetabulum of the specific patient in accordance with a three-dimensional periacetabular area of a three-dimensional model of the acetabulum of the specific patient reconstructed pre-operatively from an image scan of the patient, wherein the first portion completely extends around the entire inner rim surface to define an opening such that the entire acetabulum is accessible through the first portion, and the second portion completely extends around the entire periacetabular area; and a plurality of guiding formations extending through the second portion for guiding a plurality of alignment pins therethrough, wherein the plurality of guiding formations are arranged and configured relative to the periacetabular area based on a pre-operative plan for the patient; and a patient-specific alignment adapter couplable to an acetabular instrument, the patient-specific alignment adapter having a plurality of openings located at patient-specific locations, each of the plurality of openings configured to align with a respective one of the plurality of guiding formations; wherein the patient-specific alignment adapter comprises first and second arms, each of the first and second arms including at least one of the plurality of openings; and wherein the first arm and the second arm are parallel to each other. - View Dependent Claims (13, 14, 15, 16)
-
-
2. An acetabular device comprising:
-
an annular acetabular guide including; a first surface and a second surface opposite to the first surface, the first surface being patient-specific and made to conform to an acetabular rim surface around an acetabulum of a patient in accordance with a three-dimensional acetabular rim surface of a three-dimensional image of the acetabulum of the patient; an inner surface including an opening configured to allow access to the acetabulum; and first and second guide formations configured to extend through the annular acetabular guide outside the acetabular rim surface, the first and second guide formations located at patient-specific locations around the acetabular rim surface; and a patient-specific adapter having first and second guiding openings located at patient-specific locations and configured to align with the first and second guide formations, and having a quick-connection component for coupling to an acetabular instrument that permits transmission of rotational force from a first component of the acetabular instrument to a second component of the acetabular instrument; wherein the patient-specific adapter comprises; a first arm having the first guiding opening; and a second arm having the second guiding opening; wherein the first arm and the second arm are parallel to each other. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
17. An acetabular device comprising:
-
a patient-specific acetabular alignment guide comprising; a first portion for aligning with and conforming in three dimensions to an acetabular rim surface of a specific patient; a second portion for aligning with and conforming in three dimensions to a periacetabular area of the specific patient; an opening in the first portion having an axis configured for aligning with a patient-specific acetabular centering axis extending therethrough; and a plurality of guiding formations extending through the second portion for guiding a plurality of alignment pins therethrough, wherein the plurality of guiding formations are arranged and configured relative to the patient-specific centering axis based on a pre-operative plan for the patient; and a patient-specific alignment adapter couplable to an acetabular instrument so that the acetabular instrument is co-axial with the patient-specific centering axis, the patient-specific alignment adapter having a plurality of openings located at patient-specific locations and configured to co-axially align with the plurality of guiding formations, respectively, the patient-specific alignment adapter comprising; a first arm including a first of the plurality of openings; and a second arm including a second of the plurality of openings; wherein the first arm and the second arm are parallel to each other and perpendicular to the patient-specific centering axis. - View Dependent Claims (18, 19)
-
Specification