Patient selectable joint arthroplasty devices and surgical tools

• US 9,408,615 B2
• Filed: 01/25/2011
• Issued: 08/09/2016
• Est. Priority Date: 11/25/2003
• Status: Active Grant

• Current Assignee: Conformis Incorporated
• Original Assignee: Conformis Incorporated
• Inventors: Fitz, Wolfgang, Lang, Philipp
• Primary Examiner(s): Philogene, Pedro
• Application Number:
  US13/013,265
• Publication Number:
  US 20110213427A1
• Time in Patent Office: 2,023 Days
• Field of Search: 606/87, 606/86.R, 606/102, 606/91, 606/80, 606/96, 606/88, 606/89, 600/407, 600/587, 623/22.16, 623/22.15, 623/22.12, 623/22.11, 623/22.28, 623/23.26, 623/20.28, 623/20.31, 623/17.12, 701/1, 701/11, 701/7, 295/92
• US Class Current: 1/1
• CPC Class Codes: A61B 17/15 Guides therefor arrangements for guiding straight saw blades in general B23D51/025
• CPC Class Codes: A61B 17/154 for preparing bone for knee prosthesis
• CPC Class Codes: A61B 17/155 Cutting femur
• CPC Class Codes: A61B 17/157 Cutting tibia
• CPC Class Codes: A61B 17/158 Cutting patella
• CPC Class Codes: A61B 17/1666 for the acetabulum
• CPC Class Codes: A61B 17/1675 for the knee
• CPC Class Codes: A61B 17/1677 for the patella
• CPC Class Codes: A61B 17/1682 for the foot or ankle
• CPC Class Codes: A61B 17/1703 using imaging means, e.g. by X-rays
• CPC Class Codes: A61B 17/1739 specially adapted for particular parts of the body
• CPC Class Codes: A61B 17/1746 for the acetabulum
• CPC Class Codes: A61B 17/1767 for the patella
• CPC Class Codes: A61B 2017/568 produced with shape and dimensions specific for an individual patient
• CPC Class Codes: A61B 2034/105 Modelling of the patient, e.g. for ligaments or bones
• CPC Class Codes: A61B 2034/108 Computer aided selection or customisation of medical implants or cutting guides
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 5/4504 Bones A61B5/4547 takes precedence
• CPC Class Codes: A61B 5/4514 Cartilage
• CPC Class Codes: A61B 5/4523 : Tendons
• CPC Class Codes: A61B 5/4528 : Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61B 5/4533 : Ligaments
• CPC Class Codes: A61F 2/30756 : Cartilage endoprostheses A61F2/3603 takes precedence
• 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 2/38 : for elbows or knees
• CPC Class Codes: B33Y 80/00 : Products made by additive manufacturing
• CPC Class Codes: G06F 30/00 : Computer-aided design [CAD]
• CPC Class Codes: G06F 30/10 : Geometric CAD
• CPC Class Codes: Y10T 29/49 : Method of mechanical manufacture

Abstract

Disclosed herein are methods, compositions and tools for repairing articular surfaces repair materials and for repairing an articular surface. The articular surface repairs are customizable or highly selectable by patient and geared toward providing optimal fit and function. The surgical tools are designed to be customizable or highly selectable by patient to increase the speed, accuracy and simplicity of performing total or partial arthroplasty.

Claims

1. A system for use in surgically replacing or resurfacing at least a portion of a hip joint of a patient, comprising:

a surgical instrument that includes a body having a patient-specific surface and a guide to direct or accommodate a surgical tool;

wherein at least a portion of the patient-specific surface has a shape that substantially matches a shape of a corresponding surface of the hip joint, wherein the corresponding surface of the hip joint includes an acetabular surface portion selected from the group consisting of an acetabular fossa, an acetabular rim, an acetabular wall, and any combination thereof;

wherein the guide is configured relative to the patient-specific surface to provide a predefined path for the surgical tool when the patient-specific surface is placed against and aligned with the corresponding surface; and

wherein the path for the surgical tool is configured to provide a predefined degree of anteversion and/or rotation of at least one acetabular implant when the patient-specific surface is placed against and aligned with the corresponding surface of the hip joint.

2. The system of claim 1, wherein the acetabular surface includes a cartilage surface.

3. The system of claim 1, wherein the acetabular surface includes a normal cartilage surface.

4. The system of claim 1, wherein the acetabular surface includes a diseased cartilage surface.

5. The system of claim 1, wherein the acetabular surface includes a normal cartilage surface and a diseased cartilage surface.

6. The system of claim 1, wherein the acetabular surface includes a subchondral bone surface.

7. The system of claim 1, wherein the acetabular surface includes a cortical bone surface.

8. The system of claim 1, wherein the acetabular surface includes the surface of at least one osteophyte.

9. The system of claim 1, further comprising the acetabular implant.

10. A system comprising a surgical instrument for use in surgically replacing or resurfacing at least a portion of a hip joint of a patient, the surgical instrument comprising:

a body having a patient-specific surface and a guide to direct or accommodate a surgical tool;

wherein at least a portion of the patient-specific surface has a shape that substantially matches a shape of a corresponding surface of the hip joint, wherein the corresponding surface includes a femoral surface portion of the hip joint;

wherein the guide is configured relative to the patient-specific surface to provide a predefined path for the surgical tool when the patient-specific surface is placed against and aligned with the corresponding surface; and

wherein the path for the surgical tool is configured to provide a predefined degree of anteversion and/or rotation of at least one femoral implant when the patient-specific surface is placed against and aligned with the corresponding surface.

11. The system of claim 10, further comprising the femoral implant.

12. The system of claim 10, wherein the corresponding surface includes diseased and or normal cartilage.

13. The system of claim 10, wherein the corresponding surface includes subchondral bone.

14. The system of claim 10, wherein the corresponding surface includes cortical bone.

15. The system of claim 10, wherein the corresponding surface includes at least one osteophyte.

16. A system comprising a surgical instrument for use in surgically replacing or resurfacing at least a portion of a hip joint of a patient, the surgical instrument comprising:

a body having a patient-specific surface and a guide to direct or accommodate a surgical tool;

wherein at least a portion of the patient-specific surface has a shape that substantially matches a shape of a corresponding surface of the hip joint, wherein the corresponding surface of the hip joint includes an acetabular surface portion selected from the group consisting of an acetabular fossa an acetabular rim an acetabular wall and any combination thereof;

wherein the guide is configured relative to the patient-specific surface to provide a predefined path for the surgical tool that is aligned through a portion of tissue associated with the hip joint when the patient-specific surface is placed against and aligned with the corresponding surface; and

wherein the path for the surgical tool is configured to provide a predefined degree of tilting of at least one acetabular implant when the patient-specific surface is placed against and aligned with the corresponding surface.

17. The system of claim 16, further comprising the acetabular implant.

18. The system of claim 16, wherein the corresponding surface includes diseased and or normal cartilage.

19. The system of claim 16, wherein the corresponding surface includes subchondral bone.

20. The system of claim 16, wherein the corresponding surface includes cortical bone.

21. The system of claim 16, wherein the corresponding surface includes at least one osteophyte.