Revision robotics

Patent metadata

Field	Value
Publication number	US-12137996-B2
Application number	US-202016988090-A
Country	US
Kind code	B2
Filing date	Aug 7, 2020
Priority date	Aug 9, 2019
Publication date	Nov 12, 2024
Grant date	Nov 12, 2024

Abstract

Systems and methods may be used for performing a robotic revision knee arthroplasty. For example, a robotic surgical device may be used to perform a cut. The cut may be planned to remove an existing implant based on information about the existing implant (e.g., reference points on the existing implant, an implant type, a maker of the implant, degradation information about the implant, a failure reason for the implant, or the like). In an example, a new plan may be developed for a new implant to replace the existing implant.

First claim

What is claimed is:

1. A system for performing a robotic revision knee arthroplasty, the system comprising:
a robotic surgical device; and
a processor, communicatively coupled to the robotic surgical device, the processor configured to:
intraoperatively receive a reference points of an existing implant within a patient;
determine information about the existing implant using the reference points;
plan a cut on a bone to remove the existing implant based on the information;
cause the robotic surgical device to perform the cut on the bone;
cause the robotic surgical device to be configured to automatically apply a force, via an impaction device coupled to an end effector of the robotic surgical device, in line with an axis of a canal of the bone by constraining a direction of an impaction on the bone by the impaction device along the axis of the canal; and
replan for a new implant based on the cut.

2. The system of claim 1 , wherein the processor is further to cause the robotic surgical device to install the new implant.

3. The system of claim 1 , wherein the processor is further to receive the reference points from an optical navigation device.

4. The system of claim 1 , wherein the processor is further to cause the robotic surgical device to prepare a canal for the new implant.

5. The system of claim 1 , wherein to receive the reference points, the processor is further to generate the reference points from identifiable portions of an x-ray.

6. The system of claim 1 , wherein to receive the reference points, the processor is further to receive the reference points via registering the reference points on the existing implant intraoperatively.

7. The system of claim 1 , wherein the information about the existing implant includes at least one of an implant type, a maker of the existing implant, degradation information about the existing implant, or a failure reason for the existing implant.

8. The system of claim 1 , wherein to plan the cut, the processor is further to predict a surface for the new implant.

9. The system of claim 1 , wherein to perform the cut, the processor is further to configure the robotic surgical device as a robotic cut guide.

10. The system of claim 1 , wherein to perform the cut, the processor is further to cause the robotic surgical device to perform the cut automatically.

11. The system of claim 1 , wherein to replan for the new implant, the processor is further to use predictive analytics or a bone atlas.

12. The system of claim 1 , wherein the processor is further to plan a clean-up cut after the cut is performed.

13. The system of claim 1 , wherein to perform the cut using the robotic surgical device, the processor is further to cut under the existing implant using the robotic surgical device.

14. The system of claim 1 , wherein to perform the cut using the robotic surgical device, the processor is further to contour or perform a fine cut or burr to create a flat surface on the bone or to prepare the canal for a stem using the robotic surgical device.

15. A method of performing a robotic revision knee arthroplasty, the method comprising:
intraoperatively receiving a plurality of reference points an existing implant within a patient;
determining information about the existing implant affixed to a bone of a knee using the reference points;
using a processor, planning a cut to remove the existing implant based on the information;
causing a robotic surgical device to be configured to automatically apply a force via an impaction device coupled to an end effector of the robotic surgical device in line with an axis of a canal of the bone by constraining a direction of an impaction on the bone by the impaction device along the axis of the canal; and
replanning for a new implant to be affixed to the bone of the knee based on the cut.

16. The method of claim 15 , further comprising installing the new implant.

17. The method of claim 15 , further comprising using optical navigation to register the reference points.

18. The method of claim 15 , further comprising robotically preparing a canal for the new implant.

19. The method of claim 15 , further comprising, displaying on a user interface, a joint line of the knee based on extrapolated bone missing from the bone.

20. The method of claim 15 , further comprising, planning, using the processor, a tibial surface to be automatically burred by the robotic surgical device.

Assignees

• Orthosoft Ulc

Inventors

• Boisvert Olivier
• Lundquist Ryan
• Facchinello Yann
• Greber Eric

Classifications

• A61B2034/2065

  Tracking using image or pattern recognition · CPC title

• A61B2034/105

  Modelling of the patient, e.g. for ligaments or bones · CPC title

• A61B2034/2055

  Optical tracking systems · CPC title

• A61B2017/00115

  with audible or visual output · CPC title

• A61F2/461

  of knees · CPC title