Surgical cutting guide

• US 8,951,260 B2
• Filed: 06/13/2008
• Issued: 02/10/2015
• Est. Priority Date: 05/25/2001
• Status: Active Grant

• Current Assignee: Conformis Incorporated
• Original Assignee: Conformis Incorporated
• Inventors: Lang, Philipp, Fitz, Wolfgang, Steines, Daniel, Bojarski, Raymond A.
• Primary Examiner(s): LAWSON, MATTHEW JAMES
• Application Number:
  US12/139,324
• Publication Number:
  US 20080275452A1
• Time in Patent Office: 2,433 Days
• Field of Search: 606/86.R, 606 87- 89, 606/96
• US Class Current: 606/88
• CPC Class Codes: A61B 17/15 Guides therefor arrangements for guiding straight saw blades in general B23D51/025
• CPC Class Codes: A61B 17/157 Cutting tibia
• CPC Class Codes: A61B 17/1764 for the knee
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2090/033 Abutting means, stops, e.g. abutting on tissue or skin
• CPC Class Codes: A61B 2090/034 abutting on parts of the device itself
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61B 5/103 Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes A61B5/08 takes precedence; measuring aids for tailors A41H1/00; measuring instruments specially adapted for dentistry A61C19/04
• CPC Class Codes: A61B 5/4528 Joints A61B5/4533, A61B5/4538 take precedence

Abstract

The present invention is directed to a surgical cutting guide for guiding a surgical instrument along a cutting path located on a biological tissue. The surgical guide includes a contact surface that conforms to a surface associated with the tissue and at least one guide for restricting movement of a surgical instrument in a first direction and for allowing the movement of the surgical instrument in a second direction along a cutting path across the surface of the tissue. The guide further contains a stop for restricting movement of the surgical instrument in the second direction along the cutting path. The stop is based at least, in part, on patient specific information.

Claims

1. A cutting guide comprising:

a portion that substantially conforms to at least a portion of a knee joint of a patient;

at least one guide configured to direct movement of a surgical instrument along a predetermined path; and

a stop that prevents a surgical instrument from deviating from the predetermined path, wherein the stop includes patient-specific information derived from the knee joint of the patient including information regarding a tibial spine of the knee joint of the patient.

2. The cutting guide of claim 1, wherein the cutting guide is used for a total knee arthroplasty.

3. The cutting guide of claim 1, wherein the cutting guide is used for a partial knee arthroplasty.

4. The cutting guide of claim 1, wherein the patient-specific information further includes information regarding a shape, location or orientation of a ligament of the knee joint of the patient.

5. The cutting guide of claim 4, wherein the ligament is an anterior cruciate ligament of the knee joint.

6. The cutting guide of claim 1, wherein the portion that substantially conforms to at least a portion of the knee joint of the patient includes information derived from image data of the knee joint of the patient.

7. The cutting guide of claim 1, wherein the portion that substantially conforms to at least a portion of the knee joint of the patient includes cartilage information derived from image data of the knee joint of the patient.

8. The cutting guide of claim 1, wherein the portion that substantially conforms to at least a portion of the knee joint of the patient includes subchondral bone information derived from image data of the knee joint of the patient.

9. The cutting guide of claim 1, wherein the portion that substantially conforms to at least a portion of the knee joint of the patient includes information regarding a shape of an articular surface of the knee joint of the patient derived from image data of the knee joint of the patient.

10. The cutting guide of claim 1, wherein the portion that substantially conforms to at least a portion of the knee joint of the patient includes information regarding a shape of a non-articular surface of the knee joint of the patient derived from image data of the knee joint of the patient.

11. The cutting guide of claim 1, wherein the patient-specific information includes information regarding a shape, location or orientation of the tibial spine of the knee joint of the patient.

12. A cutting guide comprising:

a portion that substantially conforms to at least a portion of a tibia of a knee joint of a patient;

at least one guide configured to direct movement of a surgical instrument along a predetermined path; and

a stop for preventing the surgical instrument from deviating from the predetermined path, wherein the stop is integrated into the cutting guide and includes patient-specific information derived from image data of the knee joint of the patient regarding a ligament of the knee joint of the patient.

13. A cutting guide comprising:

a portion that substantially conforms to at least a portion of a tibia of a knee joint of a patient;

at least one guide configured to direct movement of a surgical instrument along a predetermined path; and

a stop for preventing the surgical instrument from deviating from the predetermined path, wherein the stop is attached to the cutting guide and includes patient-specific information derived from image data of the knee joint of the patient regarding a ligament of the knee joint of the patient.

14. The cutting guide according to claim 13, wherein the attachment is via a block.

15. The cutting guide according to claim 13, wherein the attachment of the stop is via a linkage.

16. A cutting guide comprising:

a portion that substantially matches at least a portion of a tibia of a knee joint of a patient;

at least one guide configured to direct movement of a surgical instrument along a predetermined path;

a stop for preventing the surgical instrument from deviating from the predetermined path, wherein a position, orientation or shape of the stop includes patient-specific information derived from image data of the knee joint of the patient regarding a shape or location of a tibial spine of the tibia of the knee joint of the patient.

17. The cutting guide according to claim 16, wherein the position, orientation or shape of the stop allows for intra-operative adjustments.

18. A surgical cutting guide comprising:

a surface that substantially conforms to at least a portion of a tibia of a knee joint of a patient;

at least one guide configured to direct movement of a surgical instrument along a predetermined path, wherein a position, shape or orientation of the at least one guide includes patient specific information derived from image data of the knee joint of the patient and provides for a predetermined cut angulation or a predetermined cut height and

a stop configured to restrict movement of the surgical instrument in a direction along the predetermined path, wherein the stop includes patient-specific information derived from the image data of the knee joint of the patient regarding a ligament of the knee joint of the patient.

19. The surgical cutting guide according to claim 18, wherein the predetermined cut angulation or the predetermined cut height includes patient specific information derived from image data of the knee joint of the patient.

20. A surgical cutting guide comprising:

a surface that substantially matches at least a portion of a tibia of a knee joint of a patient;

at least one guide configured to direct movement of a surgical instrument along a predetermined path; and

a stop that prevents the surgical instrument from deviating from the predetermined path wherein at least one of the shape, location, and orientation of the stop includes patient-specific information derived from image data of the joint regarding a shape, location or orientation of a a tibial spine of the knee joint of the patient to be preserved, such that the stop prevents the surgical instrument from damaging the tibial spine of the knee joint of the patient.