Patient selectable joint arthroplasty devices and surgical tools

Patent metadata

Field	Value
Publication number	US-9295482-B2
Application number	US-201113163121-A
Country	US
Kind code	B2
Filing date	Jun 17, 2011
Priority date	May 25, 2001
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

A patellar 3-D guidance tool includes a template. The template includes at least one contact surface for engaging a surface of the patella. The at least one contact surface substantially conforms with the surface associated with the patellar. At least one guide aperture directs movement of a surgical instrument, wherein the shape and/or position of the guide aperture is based, at least in part, on three or more anatomic reference points associated with the patellar.

First claim

What is claimed is:

1. A joint arthroplasty system for repairing a diseased or damaged joint of a patientcomprising:
an implant; and
a patient-specific surgical instrument configured to facilitate the placement of the implant into the diseased or damaged joint, the instrument comprising:
a patient-specific surface for engaging a corresponding portion of the diseased or damaged joint, the patient-specific surface including cartilage information derived from image data of the diseased or damaged joint, wherein the corresponding portion of the diseased or damaged joint includes an osteophyte, wherein the patient-specific surface references the osteophyte when the patient-specific surface is engaged and aligned with the corresponding portion of the diseased or damaged joint; and
a guide sized and shaped to accommodate a surgical tool, wherein the guide has a position and orientation relative to the patient-specific surface to provide a predetermined path for the surgical tool.

2. The system of claim 1 , wherein the patient-specific surgical instrument is configured such that the patient-specific surface extends over but does not engage a second osteophyte of the diseased or damaged joint when the patient-specific surface is engaged and aligned with the corresponding portion of the diseased or damaged joint.

3. The system of claim 1 , wherein the patient-specific surgical instrument is configured such that the patient-specific surface extends over but substantially does not engage a second osteophyte of the diseased or damaged joint when the patient-specific surface is engaged and aligned with the corresponding portion of the diseased or damaged joint.

4. The system of claim 1 , wherein the patient-specific surface is configured to substantially engage the osteophyte.

5. The system of claim 1 , wherein the patient-specific surface is configured to substantially engage a portion of the osteophyte.

6. The system of claim 1 , wherein the surgical tool is selected from the group consisting of: a drill, a saw, a reamer, a k-wire, a curette, a screw, and any combination thereof.

7. The system of claim 1 , wherein the instrument is comprised of multiple components.

8. The system of claim 1 , wherein the patient-specific surface and the guide are contained in a single component.

9. The system of claim 1 , wherein the diseased or damaged joint is selected from the group consisting of a knee joint, a hip joint, a shoulder joint, an ankle joint, an elbow joint, and a wrist joint.

10. The system of claim 1 , wherein the implant is selected from a library of preexisting implants.

11. The system of claim 10 , wherein the selected implant is further manipulated based, at least in part on the image data of the diseased or damaged joint.

12. The system of claim 1 , wherein the implant is a patient-specific implant created using the image data of the diseased or damaged joint.

13. A joint arthroplasty system for use in surgically repairing a diseased or damaged joint of a patient, comprising:
an implant; and
a block having a patient-specific surface and a guide:
the patient-specific surface having a first portion configured to have a shape that is substantially a negative of a subchondral bone surface of the diseased or damaged joint and a second portion configured to have a shape that is substantially a negative of a cortical bone surface of the diseased or damaged joint, wherein the patient-specific surface is configured to reference an osteophyte of the diseased or damaged joint; and
the guide being sized and shaped to accommodate a surgical tool and have a position and orientation relative to the patient-specific surface to provide a predetermined path for the surgical tool that is aligned through a portion of the diseased or damaged joint.

14. The system of claim 13 , wherein the patient-specific surface is configured to engage at least a portion of the osteophyte of the diseased or damaged joint.

15. The system of claim 13 , wherein the implant is selected from a library of preexisting implants.

16. The system of claim 13 , wherein the implant is created for the patient based, at least in part, on the image data of the diseased or damaged joint.

17. A joint arthroplasty system for use in surgically repairing a diseased or damaged joint of a patient, comprising:
an implant; and
a block having a patient-specific surface and a guide:
the patient-specific surface having a first portion configured to have a shape that is substantially a negative of an articular surface of the diseased or damaged joint, a second portion configured to have a shape that is substantially a negative of a cortical bone surface of the diseased or damaged joint, wherein the patient-specific surface is configured to reference an osteophyte of the diseased or damaged joint; and
the guide being sized and shaped to accommodate a surgical tool and have a position and orientation relative to the patient-specific surface to provide a predetermined path for the surgical tool that is aligned through a portion of the diseased or damaged joint.

18. The system of claim 17 , wherein the patient-specific surface is configured to engage at least a portion of the osteophyte of the diseased or damaged joint.

19. The system of claim 17 , wherein the implant is selected from a library of preexisting implants.

20. The system of claim 17 , wherein the implant is created for the patient based, at least in part, on the image data of the diseased or damaged joint.

Assignees

• Fitz Wolfgang
• Lang Philipp
• Bojarski Raymond A
• Steines Daniel
• Conformis Inc

Inventors

• Fitz Wolfgang
• Lang Philipp
• Bojarski Raymond A
• Steines Daniel

Classifications

• A61B5/4528

  Joints (A61B5/4533, A61B5/4538 take precedence) · CPC title

• A61F2/30756

  Cartilage endoprostheses (A61F2/3603 takes precedence) · CPC title

• A61B5/4504

  Bones (A61B5/4547 takes precedence) · CPC title

• A61B5/103

  Measuring devices for testing the shape, pattern, {colour,} size or movement of the body or parts thereof, for diagnostic purposes (measuring instruments specially adapted for dentistry A61C19/04) · CPC title

• A61B19/50

  Human Necessities · mapped topic