Surgical tools facilitating increased accuracy, speed and simplicity in performing joint arthroplasty

• US 9,066,728 B2
• Filed: 02/27/2012
• Issued: 06/30/2015
• Est. Priority Date: 05/25/2001
• Status: Expired due to Term

• Current Assignee: Conformis Incorporated
• Original Assignee: Conformis Incorporated
• Inventors: Burdulis, Albert G. Jr., Fitz, Wolfgang, Vargas-Voracek, Rene, Lang, Philipp, Steines, Daniel, Tsougarakis, Konstantinos
• Primary Examiner(s): Philogene, Pedro
• Application Number:
  US13/405,843
• Publication Number:
  US 20120158001A1
• Time in Patent Office: 1,219 Days
• Field of Search: 623/20.32, 623/20.35, 623/20.3, 623/20.31, 623/14.12, 623/18.11, 623/21.18, 606/86.A, 606/86.R, 606/87, 606/88, 606/89, 606/82, 606/80, 606/96, 606/98, 295/271, 295/57, 295/92, 600/410, 600/427, 600/407
• US Class Current: 1/1
• 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 17/1677 for the patella
• CPC Class Codes: A61B 17/1767 for the patella
• CPC Class Codes: A61B 2017/0023 disposable
• CPC Class Codes: A61B 2017/568 produced with shape and dimensions specific for an individual patient
• 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: Y10T 29/49 Method of mechanical manufacture
• CPC Class Codes: Y10T 29/4998 Combined manufacture including applying or shaping of fluent material
• CPC Class Codes: Y10T 29/49995 Shaping one-piece blank by removing material

Abstract

Disclosed herein are tools for repairing articular surfaces repair materials and for repairing an articular surface. 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 patient-specific surgical system for surgery of joint of a patient, the system comprising:

a patient-specific surface for engaging a substantially uncut joint surface, the surface conforming to and being substantially a negative of the uncut joint surface; and

a surgical instrument guide for directing a surgical instrument, wherein the surgical instrument guide has a predetermined position relative to the conforming surface and is fixed at a predetermined orientation from an axis associated with said joint selected from the group consisting of an anatomical axis, a biomechanical axis, and a combination thereof;

wherein the surgical instrument guide defines a path through at least a portion of the joint, the path having a position based on a predetermined rotation of an articular implant, the surgical instrument guide configured to guide the surgical instrument along the path, wherein said joint is an ankle joint of the patient.

2. The system of claim 1, wherein the patient-specific surface and the surgical instrument guide are included in an integrally formed body.

3. The system of claim 1, wherein the system has a plurality of surgical instrument guides.

4. The system of claim 3, wherein two or more of the plurality of surgical instrument guides have a parallel orientation.

5. The system of claim 3, wherein two or more of the plurality of surgical instrument guides have a non-parallel orientation.

6. The system of claim 1, wherein the patient-specific surface has a shape that substantially conforms to a portion of a tibia.

7. The system of claim 1, wherein the patient-specific surface has a shape that substantially conforms to a portion of cortical bone of the ankle joint of the patient.

8. The system of claim 1, wherein the patient-specific surface has a shape that substantially conforms to a portion of an articular surface of the ankle joint of the patient.

9. The system of claim 1, wherein the patient-specific surface has a shape that substantially conforms to a portion of cartilage of the ankle joint of the patient.

10. The system of claim 1, wherein the patient-specific surface has a shape that substantially conforms to a portion of subchondral bone of the ankle joint of the patient.

11. The system of claim 1, wherein the patient-specific surface is a first patient-specific surface, and wherein the system further comprises a second patient-specific surface conforming to and being substantially a negative of a second uncut joint surface.

12. The system of claim 11, wherein the first patient-specific surface has a shape that substantially conforms to a portion of a tibia.

13. The system of claim 11, wherein the first patient-specific surface has a shape that substantially conforms to a portion of cortical bone of the ankle joint of the patient.

14. The system of claim 11, wherein the first patient-specific surface has a shape that substantially conforms to a portion of an articular surface of the ankle joint of the patient.

15. The system of claim 11, wherein the first patient-specific surface has a shape that substantially conforms to a portion of cartilage of the ankle joint of the patient.

16. The system of claim 11, wherein the first patient-specific surface has a shape that substantially conforms to a portion of subchondral bone of the ankle joint of the patient.

17. The system of claim 11, further comprising an ankle implant.

18. The system of claim 11, further comprising an articular implant.

19. The system of claim 1, further comprising an ankle implant.

20. A patient-specific surgical system for surgery of a joint of a patient, the system comprising:

a patient-specific surface for engaging a substantially uncut joint surface, the surface conforming to and being substantially a negative of the uncut joint surface; and

a surgical instrument guide for directing a surgical instrument, wherein the surgical instrument guide has a predetermined position relative to the conforming surface and is fixed at a predetermined orientation from an axis associated with said joint selected from the group consisting of an anatomical axis, a biomechanical axis, and a combination thereof;

wherein the surgical instrument guide defines a path through at least a portion of the joint, the path having a position based on at least one of a predetermined axial rotation angle of an orthopedic implant, and wherein the surgical instrument guide is configured to guide the surgical instrument along the path, wherein said joint is an ankle joint of the patient.

21. The system of claim 20, wherein the patient-specific surface has a shape that substantially conforms to a portion of a tibia.

22. The system of claim 20, wherein the patient-specific surface has a shape that substantially conforms to a portion of cortical bone of the ankle joint of the patient.

23. The system of claim 20, wherein the patient-specific surface has a shape that substantially conforms to a portion of cartilage of the ankle joint of the patient.

24. The system of claim 20, wherein the patient-specific surface has a shape that substantially conforms to a portion of subchondral bone of the ankle joint of the patient.

25. A patient-specific surgical system for surgery of a joint of a patient, the system comprising:

a patient-specific surface for engaging a substantially uncut joint surface, the surface conforming to and being substantially a negative of the uncut joint surface; and

a cutting guide for directing a surgical cutting instrument, wherein the guide has a predetermined position relative to the conforming surface and is fixed at a predetermined orientation from an axis associated with said joint selected from the group consisting of an anatomical axis, a biomechanical axis, and a combination thereof;

wherein the cutting guide defines a cutting path through at least a portion of the joint, the path having a position based on at least one of a predetermined axial rotation angle of an orthopedic implant, wherein said joint is an ankle joint of the patient.

26. The system of claim 25, further comprising an ankle implant.

27. The system of claim 25, further comprising an articular implant.

28. A patient-specific surgical system for surgery of a joint of a patient, the system comprising:

a patient-specific surface for engaging a substantially uncut joint surface, the surface conforming to and being substantially a negative of the uncut joint surface; and

a hole for directing a surgical cutting instrument, wherein the hole has a predetermined position relative to the conforming surface and is fixed at a predetermined orientation from an axis associated with said joint selected from the group consisting of an anatomical axis a biomechanical axis, and a combination thereof;

wherein the hole defines a path through at least a portion of the joint, the path having a position based on at least one of a predetermined axial rotation angle of an orthopedic ankle implant.

29. The system of claim 28, further comprising an ankle implant.

30. The system of claim 28, further comprising an articular implant.