Patient-specific acetabular guides and associated instruments

Patent metadata

Field	Value
Publication number	US-10507029-B2
Application number	US-201615130414-A
Country	US
Kind code	B2
Filing date	Apr 15, 2016
Priority date	Feb 27, 2006
Publication date	Dec 17, 2019
Grant date	Dec 17, 2019

Abstract

A patient-specific acetabular guide can be used for preparing an acetabulum of a patient to receive an acetabular implant. The acetabular guide includes a patient-specific engagement surface designed to be complementary and mateable with a corresponding surface of the patient's pelvic anatomy. The acetabular guide is designed during a pre-operative plan for the patient by a three-dimensional reconstruction of the anatomy of the patient using two-dimensional medical images. The patient-specific engagement surface has a first portion mateable with a portion of the acetabulum of the patient. The acetabular guide includes a guiding element that extends from the acetabular guide opposite to the first portion of engagement surface. The guiding element defines a bore designed to be oriented along an alignment axis for an acetabular implant when the acetabular guide is engaged to the acetabulum.

First claim

What is claimed is:

1. An acetabular guide comprising:
a patient-specific engagement surface designed to be complementary and mateable with a corresponding surface of the patient's pelvic anatomy as determined during a pre-operative plan of the patient by a three-dimensional reconstruction of the anatomy of the patient using two-dimensional medical images, the patient-specific engagement surface having a first portion mateable with a portion of an acetabulum of the patient and the engagement surface includes a second portion mateable with a portion of a rim of the acetabulum of the patient;
a guiding element extending from the acetabular guide opposite to the first portion of engagement surface, the guiding element defining a bore designed to be oriented along an alignment axis for an acetabular implant when the acetabular guide is engaged to the acetabulum; and
first and second marker elements extending from a portion of the acetabular guide outside the acetabulum of the patient, the marker elements defining corresponding first and second bores for guiding first and second marker pins into a bone portion of the patient.

2. An acetabular guide comprising:
a patient-specific engagement surface designed to be complementary and mateable with a corresponding surface of the patient's pelvic anatomy as determined during a pre-operative plan of the patient by a three-dimensional reconstruction of the anatomy of the patient using two-dimensional medical images, the patient-specific engagement surface having a first portion mateable with a portion of an acetabulum of the patient;
a guiding element extending from the acetabular guide opposite to the first portion of engagement surface, the guiding element defining a bore designed to be oriented along an alignment axis for an acetabular implant when the acetabular guide is engaged to the acetabulum; and
first and second marker elements extending from a portion of the acetabular guide outside the acetabulum of the patient, the marker elements defining corresponding first and second bores for guiding first and second marker pins into a bone portion of the patient.

Assignees

• Biomet Mfg Llc

Inventors

• Meridew Jason D
• Witt Tyler D
• Schoenefeld Ryan John
• Slone William Jason
• Lombardi Adolph V
• Nycz Jeffrey H
• Munsterman Matthew D
• Wolfe Alexander P
• Kabata Tamon
• Nairus James
• Clohisy John C

Classifications

• F04C2270/041

  Controlled or regulated · CPC title

• A61B17/1735

  for rasps or chisels · CPC title

• A61B2034/108

  Computer aided selection or customisation of medical implants or cutting guides · CPC title

• A61F2002/4687

  Mechanical guides for implantation instruments · CPC title

• A61F2/4609

  of acetabular cups · CPC title