Patient-matched acetabular alignment tool

A Patient, Tool Technology for Aligning Orthopedic Implants That Can Solve Costly, Time-Consuming Problems

Inactive Publication Date: 2013-06-12
SMITH & NEPHEW INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This can be time-consuming and expensive, a...

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  • Patient-matched acetabular alignment tool
  • Patient-matched acetabular alignment tool
  • Patient-matched acetabular alignment tool

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Embodiment Construction

[0040] Certain illustrative embodiments will be described in order to provide a thorough understanding of the systems, devices, and methods described herein. Although the embodiments and features described herein are specifically described for use in conjunction with an acetabular system, it will be appreciated that all components, adjustable systems, methods of manufacture and other features outlined below may be combined with one another in any suitable manner, And can be adapted and applied to medical devices and implants to be used in other surgical procedures including, but not limited to, knee replacements, shoulder replacements, and foot, ankle, hand, and other extremity surgeries.

[0041] Figure 1 shows an illustrative pelvic girdle and reference system for use in patient-matched alignment techniques. The patient's pelvic girdle 100 includes the acetabulum 102 , ilium 104 , ischium 106 , and pubic bone 108 . Each particular patient anatomy may be described using a co...

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Abstract

Systems, devices, and methods are provided for aligning acetabular implants. A patient-matched acetabular alignment tool is used to orient tools and implants intraoperatively. The patient-matched acetabular alignment tool includes a mounting member and leg members which are configured based on the particular patient's anatomic landmark sites (e.g., acetabular bony landmarks). The leg members are attached to the mounting member and configured to connect with a respective anatomic landmark site to achieve a desired implant angle and axis. For example, the leg members may form a tripod support base through which an acetabular shell may be inserted into the patient's acetabulum at desired angles of version and inclination. In some embodiments, the leg members may be retractable and expandable with respect to the mounting member, thereby providing a tool with reduced profile for inserting the device in the patient's soft tissue.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application No. 61 / 373,993, filed August 16, 2010, which is hereby incorporated by reference in its entirety. Background technique [0003] Joints often undergo degenerative / degenerative changes for a number of reasons. When joint degeneration becomes advanced or irreversible, it may become necessary to replace the natural joint with a false joint. Artificial implants, including hip, shoulder and knee joints are widely used in orthopedic surgery. Specifically, hip prostheses are common. The human hip joint mechanically functions as a ball and a socket joint in which the spherical head of the femur is positioned within the socket-shaped acetabulum of the pelvis. Various degenerative injuries may require complete or partial replacement of the hip with synthetic materials, usually metal, ceramic or plastic. [0004] A standard hip replacement includes two load...

Claims

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Application Information

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IPC IPC(8): A61F2/46A61B17/56A61F2/34
CPCA61B17/1746A61B2017/568A61F2/30942A61F2002/4628A61F2002/4629A61F2002/4687A61F2/4609A61B34/10A61B17/56A61F2/34A61F2/46G05B19/4099A61B2034/105A61B2034/108A61F2/4603G05B2219/35134G05B2219/49007
Inventor L.A.吉布森L.C.贾斯珀P.E.弗里德里克
Owner SMITH & NEPHEW INC
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