Patient selectable joint arthroplasty devices and surgical tools

• US 9,295,481 B2
• Filed: 01/25/2011
• Issued: 03/29/2016
• 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:
  US13/013,288
• Publication Number:
  US 20110218584A1
• Time in Patent Office: 1,890 Days
• Field of Search: 606/79, 606/80, 606/86.R, 606 87- 89, 606/91, 606/96, 606/102, 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, 701/7, 701/11, 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 surgical tool for use in surgery on a hip joint of a patient, comprising:

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

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

wherein the guide is configured relative to the patient-specific surface to provide a predefined path for the surgical instrument 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 acetabular surface; and

wherein the predefined path for the surgical instrument is configured to provide a predefined orientation of an acetabular implant when the patient-specific surface is placed against and aligned with the corresponding acetabular surface,

wherein the shape of the corresponding acetabular surface of the hip joint and the predefined orientation of the acetabular implant are derived from the electronic image data of the hip joint.

2. The surgical tool of claim 1, wherein the predefined orientation includes a predefined anteversion or retroversion of the acetabular implant when the patient-specific surface is placed against and aligned with the acetabular surface.

3. The surgical tool of claim 1, wherein the predefined orientation includes a predefined rotation of the acetabular implant when the patient-specific surface is placed against and aligned with the acetabular surface.

4. The surgical tool of claim 1, wherein the predefined orientation includes in a predefined tilt of the acetabular implant when the patient-specific surface is placed against and aligned with the acetabular surface.

5. A system comprising the surgical tool of claim 1 and one or more implant components.

6. The system of claim 5, wherein the one or more implant components includes the acetabular implant.

7. The system of claim 5, wherein the one or more implant components includes a femoral implant.

8. The system of claim 5 further includes one or more surgical tools.

9. The system of claim 8, wherein the one or more surgical tools include at least one reusable surgical tool.

10. The system of claim 8, wherein the one or more surgical tools include at least one surgical tool that is patient-specific and for single use.

11. The surgical tool of claim 1, wherein the surgical instrument is a surgical reamer, a surgical drill, or a surgical saw.

16. The surgical tool of claim 1, wherein the corresponding acetabular surface of the hip joint includes one or more osteophytes.

12. A surgical tool for use in surgery on a hip joint of a patient, comprising:

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

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

wherein the guide is configured relative to the patient-specific surface to provide a predefined path for the surgical instrument 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 acetabular rim surface; and

wherein the predefined path for the surgical instrument is configured to provide a predefined orientation of an acetabular implant when the patient-specific surface is placed against and aligned with the acetabular rim surface,

wherein the shape of the corresponding acetabular rim surface of the hip joint and the predefined orientation of the acetabular implant are derived from the electronic image data of the hip joint.

13. The surgical tool of claim 12, wherein the predefined orientation includes a predefined anteversion or retroversion of the acetabular implant when the patient-specific surface is placed against and aligned with the acetabular rim surface.

14. The surgical tool of claim 12, wherein the predefined orientation includes a predefined rotation of the acetabular implant when the patient-specific surface is placed against and aligned with the acetabular rim surface.

15. The surgical tool of claim 12, wherein the predefined orientation includes in a predefined tilt of the acetabular implant when the patient-specific surface is placed against and aligned with the acetabular rim surface.

17. The surgical tool of claim 12, wherein the patient-specific surface has a portion substantially conforming to an acetabular wall surface of the hip joint.

18. The surgical tool of claim 12, wherein the patient-specific surface has a portion substantially conforming to an acetabular fossa portion of the hip joint.

19. The surgical tool of claim 12, wherein the patient-specific surface has a portion substantially conforming to a cartilage surface portion of the hip joint.

20. The surgical tool of claim 12, wherein the patient-specific surface has a portion substantially conforming to one or more osteophytes of the hip joint.