Patient Selectable Knee Arthroplasty Devices

• US 20140336774A1
• Filed: 04/07/2014
• Published: 11/13/2014
• Est. Priority Date: 05/25/2001
• Status: Active Grant

• Current Assignee: Conformis Incorporated
• Original Assignee: Conformis Incorporated
• Inventors: Fitz, Wolfgang, Lang, Philipp, Steines, Daniel, Tsougarakis, Konstantinos, Vargas-Voracek, Rene
• Granted Patent: US 9,186,254 B2
• Time in Patent Office: Days
• US Class Current: 623/20.35
• CPC Class Codes: A61B 5/4504 Bones A61B5/4547 takes precedence
• CPC Class Codes: A61B 5/4514 Cartilage
• CPC Class Codes: A61B 5/4528 Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61F 2/30756 Cartilage endoprostheses A61F2/3603 takes precedence
• CPC Class Codes: A61F 2/3094 Designing or manufacturing processes
• CPC Class Codes: A61F 2/30942 for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
• CPC Class Codes: A61F 2/3859 Femoral components
• CPC Class Codes: A61F 2/3877 Patellae or trochleae
• CPC Class Codes: A61F 2002/30952 using CAD-CAM techniques or NC-techniques
• CPC Class Codes: A61F 2002/30957 using a positive or a negative model, e.g. moulds
• CPC Class Codes: A61F 2002/30962 using stereolithography
• CPC Class Codes: A61F 2002/4635 using minimally invasive surgery
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing
• CPC Class Codes: G06T 2207/30052 Implant; Prosthesis
• CPC Class Codes: G06T 7/0014 using an image reference approach

Abstract

Disclosed herein are methods and devices for repairing articular surfaces in a knee joint. The articular surface repairs are customizable or highly selectable for each patient and geared toward providing optimal fit and function. Kits are also provided to enable customized repairs to be performed.

Claims

1. An orthopedic implant comprising:

a femoral implant having a non-custom inner bone-engaging surface including one or more planar surfaces configured for engagement with femoral bone cuts prepared for a femoral implant; and

an anterior femoral flange of the orthopedic implant configured to have a patient-specific shape and closely match a corresponding portion of a femur of a specific patient from a three-dimensional digital image of a patient'"'"'s joint using computer modeling.

2. An orthopedic implant comprising:

a femoral implant having a non-custom inner bone-engaging surface including one or more planar surfaces configured for engagement with femoral bone cuts prepared for a femoral implant; and

an orientation of a patella track of the orthopedic implant configured to be patient-specific and closely match a corresponding an orientation of a patella track of a femur of a specific patient from a three-dimensional digital image of a patient'"'"'s joint using computer modeling.

3. An orthopedic implant comprising:

a femoral implant having a non-custom inner bone-engaging surface including one or more planar surfaces configured for engagement with femoral bone cuts prepared for a femoral implant; and

a shape of a patella track of the orthopedic implant configured to be patient-specific and closely match a corresponding shape of a patella track of a femur of a specific patient from a three-dimensional digital image of a patient'"'"'s joint using computer modeling.