Patient-specific acetabular guides and associated instruments

Patent metadata

Field	Value
Publication number	US-2016228133-A1
Application number	US-201615130414-A
Country	US
Kind code	A1
Filing date	Apr 15, 2016
Priority date	Feb 27, 2006
Publication date	Aug 11, 2016
Grant date	—

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 . A method for reaming and preparing an acetabulum of a patient for an acetabular implant, the method comprising:
engaging an acetabular area of the patient with a complementary surface of a patient-specific acetabular guide; supporting an alignment rod on a support device attached to the patient's pelvis; orienting the alignment rod to be parallel to an alignment axis for inserting the acetabular implant, the alignment axis determined during a preoperative plan of the patient and coinciding with a center axis of a guiding element of the acetabular guide; drilling a pilot hole in the acetabulum through a bore of the guiding element along the center axis; removing the acetabular guide; guiding an alignment pin of a reamer in the pilot hole such that the alignment pin is parallel to the alignment rod; and reaming the acetabulum.

Assignees

• Biomet Mfg Llc

Inventors

• Meridew Jason D
• Witt Tyler D
• Schoenefeld Ryan John
• Slone William Jason
• Metzger Robert
• 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

• A61B2090/034

  abutting on parts of the device itself · CPC title

• A61B17/1666

  for the acetabulum · CPC title

• A61B17/1659

  Surgical rasps, files, planes, or scrapers · CPC title