Bone pads

Patent metadata

Field	Value
Publication number	US-11318027-B2
Application number	US-201916714995-A
Country	US
Kind code	B2
Filing date	Dec 16, 2019
Priority date	Mar 8, 2013
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

Disclosed herein are systems and methods for bone preparation with designed areas having accurate tolerance profiles to enable improved initial fixation and stability for cementless implants and to improve long-term bone ingrowth/ongrowth to an implant. One method includes preparing a bone surface to receive a prosthetic implant thereon by resecting the bone surface using a first cutting path to create a first resected region and resecting the bone of the patient using a second cutting path to create a second resected region at least partially overlapping the first resection region. The second cutting path is different than the first cutting path and either manual or robotic cutting tools can be used for creating the first and second resected regions.

First claim

The invention claimed is:

1. A method of preparing a bone of a patient to receive a prosthetic implant thereon, the method comprising:
resecting the bone of the patient using a first cutting path to create a first resected region;
resecting the bone of the patient using a second cutting path to create a second resected region at least partially overlapping the first resection region,
wherein the second cutting path is different than the first cutting path.

2. The method of claim 1 , wherein the first and second cutting paths both use a first cutting tool.

3. The method of claim 1 , wherein the first cutting path uses a first cutting tool and the second cutting path uses a second cutting tool different than the first cutting tool.

4. The method of claim 1 , wherein at least one of the first and second cutting paths is a wave cutting path.

5. The method of claim 4 , wherein the at least one of the first and second wave cutting path overlaps the other of the first and second cutting path in at least two spaced apart locations.

6. The method of claim 1 , wherein both the first and second cutting paths are wave cutting paths.

7. The method of claim 6 , wherein the first and second wave cutting paths overlaps the other of the first and second wave cutting paths in at least two spaced apart locations.

8. The method of claim 1 , further comprising contacting respective first and second surfaces of a bone contacting surface of the prosthetic implant with the first and second resected regions of the bone surface.

9. The method of claim 1 , wherein the first and second resected regions are resected robotically.

10. The method of claim 1 , wherein the first resected region is resected in a debulking pass, and wherein the second resected region is resected in a finishing pass.

11. The method of claim 1 , wherein the second resected region defines a plurality of channeled preparations.

12. The method of claim 1 , wherein the second resected region defines a cross-section with peaks and valleys created by burring the bone.

13. The method of claim 1 , wherein a first cutting tool follows the first resection path including movement in a first linear direction, and wherein a second cutting tool follows the second resection path in both the first linear direction and a second linear direction perpendicular to the first linear direction.

14. The method of claim 1 , wherein the first resection region has a first geometry and the second resected region has a second geometry different than the first geometry.

15. A method of preparing a bone of a patient to receive a prosthetic implant thereon, the method comprising:
robotically resecting the bone of the patient using a first cutting path to create a first resected region;
robotically resecting the bone of the patient using a second cutting path to create a second resected region at least partially overlapping the first resection region,
wherein the second cutting path is different than the first cutting path.

16. The method of claim 15 , wherein the first and second cutting paths both use a first cutting tool.

17. The method of claim 15 , wherein the first cutting path uses a first cutting tool and the second cutting path uses a second cutting tool different than the first cutting tool.

18. The method of claim 15 , wherein at least one of the first and second cutting paths is a wave cutting path.

19. The method of claim 18 , wherein the at least one of the first and second wave cutting path overlaps the other of the first and second cutting path in at least two spaced apart locations.

20. The method of claim 15 , wherein both the first and second cutting paths are wave cutting paths.

21. The method of claim 20 , wherein the first and second wave cutting paths overlaps the other of the first and second wave cutting paths in at least two spaced apart locations.

Assignees

• Stryker Corp

Inventors

• Axelson Jr Stuart L
• Malackowski Donald W
• Stuart John Michael

Classifications

• A61B17/1675 Primary

  for the knee · CPC title

• A61F2002/30827

  Plurality of grooves · CPC title

• A61B17/1604

  Chisels; Rongeurs; Punches; Stamps · CPC title

• A61F2/46

  Special tools for implanting artificial joints · CPC title

• A61F2/461 Primary

  of knees · CPC title