Patient specific surgical guide locator and mount

• US 9,017,334 B2
• Filed: 02/23/2010
• Issued: 04/28/2015
• Est. Priority Date: 02/24/2009
• Status: Active Grant

• Current Assignee: MicroPort Orthopedics Holdings, Inc. (MicroPort Scientific Corp.)
• Original Assignee: MicroPort Orthopedics Holdings, Inc. (MicroPort Scientific Corp.)
• Inventors: Carroll, Michael, Obert, Richard, Stemniski, Paul
• Primary Examiner(s): Yang, Andrew
• Assistant Examiner(s): Chang, Olivia C
• Application Number:
  US12/710,898
• Publication Number:
  US 20100217338A1
• Time in Patent Office: 1,890 Days
• Field of Search: 606 86 R- 90
• US Class Current: 606/86.R
• CPC Class Codes: A61B 17/151 for corrective osteotomy
• 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 2017/0023 disposable
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/568 produced with shape and dimensions specific for an individual patient
• CPC Class Codes: A61B 2034/104 Modelling the effect of the tool, e.g. the effect of an implanted prosthesis or for predicting the effect of ablation or burring
• 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: B29C 64/386 Data acquisition or data processing for additive manufacturing
• CPC Class Codes: B33Y 50/02 for controlling or regulating additive manufacturing processes
• CPC Class Codes: B33Y 70/00 Materials specially adapted for additive manufacturing
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G06F 30/00 Computer-aided design [CAD]
• CPC Class Codes: Y10T 29/49 Method of mechanical manufacture
• CPC Class Codes: Y10T 29/49863 with prestressing of part

Abstract

A resection guide locator includes a bone engagement portion with surfaces that are complementary to the surface topographies of a bone to be resected during surgery. A housing includes a socket defined by a resilient annular wall that is sized and arranged so to accept a resection guide by press-fit to thereby position and hold the resection guide within the socket. The resection guide is maintained in a predetermined, preferred position while the surfaces are releasably locked in position on the bone. A method is disclosed for forming and using the resection guide locator.

Claims

1. A surgical instrument comprising:

a resection guide defining an elongate slot and a first pair of through holes; and

a resection guide locator having a body including as bone engagement portion having a surface that is complementary to said surface topography of said hone to be resected;

the body defining a socket sized to receive the resection guide so as to maintain said resection guide in position while said surface of said bone engagement portion is arranged in contacting relation with the bone, the body of the resection guide locator defining an elongate slot and a second pair of through holes within the socket that extend through the bone engagement portion,

wherein the elongate slot and second pair of through holes defined by the resection guide locator are positioned within the socket such that the elongate slot and second pair of through holes defined by the resection guide locator align with the elongate slot and the first pair of through holes defined by the resection guide when the resection guide is received within the socket, and

wherein the elongate slot defined by the resection guide locator does not intersect either of the second pair of through holes defined by resection guide locator.

2. A surgical instrument according to claim 1 wherein said surface of said bone engagement portion comprises a surface topography wherein one or more localized prominences have a location, shape, and size that complement the location, shape, and size of a corresponding one or more localized concavities that define a portion of said surface topography of said hone.

3. A surgical instrument according to claim 1 wherein said surface of said bone engagement portion comprises a surface topography wherein one or more localized concavities have a location, shape, and size that complement the location, shape, and size of a corresponding one or more localized prominences that define a portion of said surface topography of said hone.

4. A surgical instrument according to claim 2 or 3 wherein said surface of said bone comprises a condylar surface.

5. A surgical instrument according to claim 2 or 3 wherein said surface of said bone comprises an articular surface.

6. A surgical instrument according to claim 2 or 3 wherein said surface of said bone comprises a cortical surface.

7. A surgical instrument according to claim 1 wherein said surface of said bone engagement portion comprises a complementary, substantially mirror image of the anatomic surface features of a selected region of said bone.

8. A surgical instrument according to claims 2 or 3 wherein said one or more localized prominences and said one or more corresponding localized concavities securely engage one another so as to releasably interlock said surface of said bone engagement portion of said resection guide locator with said surface of said bone.

9. A surgical instrument according to claim 2 or 3 wherein mating of at least one of said bone surface prominences with a corresponding complementary concavity defined in a bone engaging surface of said resection guide locator impedes relative movement therebetween.

10. A surgical instrument according to claim 2 or 3 wherein mating of at least one of said bone surface concavity with a corresponding complementary prominence defined in a bone engaging surface of said resection guide locator impedes relative movement therebetween.

11. A surgical instrument comprising;

resection guide defining an elongate slot and a first pair of through holes; and

a resection guide locator, including

a bone engagement portion having a surface that is complementary to said surface topography of said bone to be resected; and

a socket defined by a resilient wall arranged for storing energy when the resection guide is press-fit in said socket and operatively engages a portion of said wall so as to maintain said resection guide in position while said surface of said bone engagement portion is arranged in contacting relation with the bone,

wherein the bone engagement portion of the resection guide locator defines an elongate slot and a second pair of through holes that are positioned relative to the socket defined by the resection guide locator such that the elongate slot and the second pair of through holes defined by the resection guide locator align with the elongate slot and the first pair of through holes defined by the resection guide when the resection guide is received within the socket, the elongate slots defined by the resection guide and the resection guide locator being sized and configured to receive a saw blade when the bone engagement portion is in contact with a bone and the resection guide is received within the socket defined by the resection guide locator, and

wherein the elongate slot defined by the resection guide locator does not intersect either of the second pair of through holes defined by the resection guide locator.

12. A surgical instrument according to claim 11 wherein said surface of said bone engagement portion comprises a surface topography wherein one or more localized prominences have a location, shape, and size that complement the location, shape, and size of a corresponding one or more localized concavities that define a portion of said surface topography of said bone, and further wherein said surface of said bone engagement portion comprises a surface topography wherein one or more localized concavities have a location, shape, and size that complement the location, shape, and size of a corresponding one or more localized prominences that define a portion of said surface topography of said bone.

13. A surgical instrument according to claim 11 wherein said surface of said bone comprises at least one of a condylar surface, an articular surface, and a cortical surface.

14. A surgical instrument according to claim 11 wherein said surface of said bone engagement portion comprises a complementary, substantially mirror image of the anatomic surface features of a selected region of said bone.

15. A surgical instrument according to claim 12 wherein said one or more localized prominences and said one or more corresponding localized concavities securely engage one another so as to releasably interlock said surface of said bone engagement portion of said resection guide locator with said surface of said bone.

16. A surgical instrument according to claim 12 wherein mating of at least one of said bone surface prominences with a corresponding complementary concavity defined in a bone engaging surface of said resection guide locator impedes relative movement therebetween.

17. A surgical instrument according to claim 12 wherein mating of at least one of said bone surface concavity with a corresponding complementary prominence defined in a bone engaging surface of said resection guide locator impedes relative movement therebetween.

18. A surgical instrument comprising:

a resection guide defining an elongate slot and a first pair of holes; and

a resection guide locator, including a body having a bone engagement portion having a surface that is complementary to the surface topography of said bone to be resected, the body defining a socket and an elongate slot and a second pair of holes, the socket sized to receive by press-fit the resection guide so as to maintain sand resection guide in a substantially fixed orientation relative to the bone engagement portion while said surface of said bone engagement portion is arranged in secure interlocking relation with said bone surface,

wherein the elongate slot and second pair of holes are positioned relative to the socket such that the elongate slot and second pair of holes of the resection guide locator align with elongate slot and the first pair of holes defined by the resection guide when the resection guide is received within the socket defined by the resection guide locator, the elongate slots defined by the resection guide and the resection guide locator being sized and configured to receive a saw blade when the bone engagement portion is in contact with a bone and the resection guide is received within the socket defined by the resection guide locator, and

wherein the elongate slot defined by the resection guide locator does not intersect either of the second pair of through holes defined by the resection guide locator.

19. A surgical instrument according to claim 18 wherein said surface of said bone engagement portion comprises a surface topography wherein one or more localized prominences have a location, shape, and size that complement the location, shape, and size of a corresponding one or more localized concavities that define a portion of said surface topography of said bone, and further wherein said surface of said bone engagement portion comprises a surface topography wherein one or more localized concavities have a location, shape, and size that complement the location, shape, and size of a corresponding one or more localized prominences that define a portion of said surface topography of said bone.

20. A surgical instrument according to claim 18 wherein said surface of said bone comprises at least one of a condylar surface, an articular surface, and a cortical surface.

21. A surgical instrument according to claim 18 wherein said surface of said bone engagement portion comprises a complementary, substantially mirror image of the anatomic surface features of a selected region of said bone.

22. A surgical instrument according to claim 19 wherein said one or more localized prominences and said one or more corresponding localized concavities securely engage one another so as to releasably interlock said surface of said bone engagement portion of said resection guide locator with said surface of said bone.

23. A surgical instrument according to claim 19 wherein mating of at least one of said bone surface prominences with a corresponding complementary concavity defined in a bone engaging surface of said resection guide locator impedes relative movement therebetween.

24. A surgical instrument according to claim 19 wherein mating of at least one of said bone surface concavity with a corresponding complementary prominence defined in a one engaging surface of said resection guide locator impedes relative movement therebetween.