Patient-specific and patient-engineered orthopedic implants

Patent metadata

Field	Value
Publication number	US-10085839-B2
Application number	US-96549310-A
Country	US
Kind code	B2
Filing date	Dec 10, 2010
Priority date	Jan 5, 2004
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

Disclosed herein are methods and devices for repairing a knee joint, including customizable and/or highly selectable implants and/or implant components for each patient to provide optimal fit and function.

First claim

What is claimed is:

1. A patient-specific bicompartmental knee implant for implantation into a patient's knee joint, the implant comprising:
a body having a condylar portion and a trochlear portion,
wherein the condylar portion has a shape generally resembling a surface of a condyle of the patient's knee joint and the trochlear portion having a shape generally resembling the surface of a trochlea of the patient's knee joint, wherein the trochlear portion includes a patellofemoral (PF) region having a standard coronal curvature selected from a family of standard curvatures and a patient-specific sagittal curvature;
the condylar portion further having an articular surface, wherein at least a portion of the articular surface is configured to have a three-dimensional shape that includes articular shape information of a corresponding portion of the condyle of the patient's knee joint; and
the condylar portion further having a bone-facing surface opposite the articular surface, wherein at least a first portion of the bone-facing surface is planar and at least a second portion of the bone-facing surface substantially matches a corresponding portion of an articular surface of the patient's knee joint.

2. The implant of claim 1 wherein the planar portion of the bone-facing surface is located on a posterior of the condylar portion.

3. The implant of claim 1 , wherein the condylar portion further comprises a third portion of the bone-facing surface, wherein the third portion is substantially planar.

4. The implant of claim 3 , wherein the first and third portions are disposed at anterior and posterior ends of the implant and the second portion is disposed between the first and third portions.

5. The implant of claim 1 , wherein the trochlear portion further comprises an articular surface wherein at least a portion of the articular surface is configured such that a curve of the at least a portion of the articular surface substantially matches a curve of a corresponding portion of an articular surface of the trochlea of the patient's knee joint.

6. The implant of claim 1 , wherein the trochlear portion further comprises a bone-facing surface opposite the articular surface, wherein at least a portion of the bone-facing surface is planar.

7. A patient-specific bicompartmental knee implant for implantation into a patient's knee joint, the implant comprising:
a body having a condylar portion and a trochlear portion,
wherein the condylar portion has a shape generally resembling a surface of a condyle of the patient's knee joint and the trochlear portion having a shape generally resembling the surface of a trochlea of the patient's knee joint, wherein the trochlear portion includes a patellofemoral (PF) region having a standard coronal curvature selected from a family of standard curvatures and a patient-specific sagittal curvature;
the condylar portion further having an articular surface wherein at least a portion of the articular surface is configured to have a three-dimensional shape that includes articular shape information of a corresponding portion of the condyle of the patient's knee joint; and the trochlear portion having a bone-facing surface and an articular surface, wherein the bone-facing surface is generally opposite the articular surface and wherein at least a portion of the bone-facing surface is planar.

8. The implant of claim 7 , wherein the condylar portion further comprises a bone-facing surface opposite the articular surface, wherein at least a portion of the bone-facing surface is planar.

9. The implant of claim 7 , wherein the condylar portion further comprises a bone-facing surface opposite the articular surface, wherein at least a portion of the bone-facing surface substantially matches a corresponding portion of an articular surface of the patient's knee joint.

10. The implant of claim 7 , wherein the condylar portion further comprises a bone-facing surface opposite the articular surface, wherein at least a portion of the bone-facing surface is planar and at least a second portion of the bone-facing surface substantially matches a corresponding portion of an articular surface of the patient's knee joint.

11. The implant of claim 10 , wherein the planar portion of the bone-facing surface is located on a posterior of the condylar portion.

12. The implant of claim 7 , wherein the condylar portion further comprises a bone-facing surface opposite the articular surface, wherein at least a first portion of the bone-facing surface is substantially planar, at least a second portion of the bone-facing surface substantially matches a corresponding portion of an articular surface of the patient's knee joint, and at least a third portion of the bone-facing surface is substantially planar.

13. The implant of claim 12 , wherein the first and third portions are disposed at anterior and posterior ends of the implant and the second portion is disposed between the first and third portions.

14. The implant of claim 7 , wherein at least a portion of the articular surface of the trochlear portion is configured such that a curve of the at least a portion of the articular surface substantially matches a curve of a corresponding portion of an articular surface of a trochlea of the patient's knee joint.

Assignees

• Wong Terrance
• Slamin John
• Lang Philipp
• Conformis Inc

Inventors

• Wong Terrance
• Slamin John
• Lang Philipp

Classifications

• A61F2002/30179

  X-shaped · CPC title

• A61F2/4657

  Measuring instruments used for implanting artificial joints (for surgical instruments A61B90/06) · CPC title

• A61F2230/0028

  Shapes in the form of latin or greek characters · CPC title

• A61F2/3872

  Meniscus for implantation between the natural bone surfaces · CPC title

• A61F2/38

  for elbows or knees · CPC title