Virtual guidance for ankle surgery procedures

Patent metadata

Field	Value
Publication number	US-11657287-B2
Application number	US-202017117800-A
Country	US
Kind code	B2
Filing date	Dec 10, 2020
Priority date	Jun 19, 2018
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

An example method includes registering, via a visualization device, a virtual model of a portion of an anatomy of an ankle of a patient to a corresponding portion of the anatomy of the ankle viewable via the visualization device, the virtual model obtained from a virtual surgical plan for an ankle arthroplasty procedure to attach a prosthetic to the anatomy. The example method also comprises displaying, via the visualization device and overlaid on the portion of the anatomy, a virtual guide that guides at least one of preparation of the anatomy for attachment of the prosthetic or attachment of the prosthetic to the anatomy.

First claim

What is claimed is:

1. A method comprising:
registering, via a visualization device, a virtual model of a portion of an anatomy of an ankle of a patient to a corresponding portion of the anatomy of the ankle viewable via the visualization device, the virtual model obtained from a virtual surgical plan for an ankle arthroplasty procedure to attach a prosthetic to the anatomy;
displaying, via the visualization device and overlaid on the portion of the anatomy, a virtual guide that guides at least one of preparation of the anatomy for attachment of the prosthetic or attachment of the prosthetic to the anatomy; and
displaying a synthesized view showing a relative position of a tibial tray trial and a tibia of the patient, wherein the synthesized view shows a relative position of a posterior edge of the tibial tray and a posterior edge of a distal end of the tibia after the distal end of the tibia has been resected.

2. The method of claim 1 , wherein the synthesized view shows a relative position of a posterior edge of the tibial tray and a posterior edge of the tibia.

3. The method of claim 1 , further comprising:
registering a virtual model of the tibial tray to a portion of the tibial tray viewable via the visualization device; and
generating the synthesized view based on the registration of the virtual model of the tibial tray and the registration of the virtual model of the portion of the tibia.

4. The method of claim 1 , wherein displaying the virtual guide comprises projecting the virtual guide via a see-through lens through which a user is able to view the anatomy of the patient.

5. The method of claim 1 , wherein the portion of the anatomy of the patient is viewable via one or more see-through lenses of the visualization device, the method further comprising displaying the virtual model and displaying the virtual guide via the see-through lenses.

6. The method of claim 1 , wherein displaying the virtual guide comprises displaying one or more of:
a virtual axis; or
a virtual cutting surface.

7. The method of claim 1 , wherein the anatomy comprises the tibia of the patient.

8. The method of claim 1 , wherein displaying the virtual guide comprises:
displaying a plurality of a virtual axes each having parameters obtained from the virtual surgical plan, each of the virtual axes configured to guide installation of a respective guide pin in the tibia; and
displaying a plurality of virtual drilling axes each having parameters obtained from the virtual surgical plan, each of the virtual drilling axes configured to guide drilling of a proximal corner of the tibia.

9. The method of claim 1 , wherein displaying the virtual guide comprises:
displaying a plurality of virtual cutting surfaces each having parameters obtained from the virtual surgical plan, the plurality of virtual cutting surfaces configured to guide resection of the tibia.

10. The method of claim 1 , wherein the anatomy comprises a talus of the patient.

11. The method of claim 1 , wherein displaying the virtual guide comprises:
displaying a virtual axis having parameters obtained from the virtual surgical plan, the virtual axis configured to guide installation of a guide pin in a talus of the patient.

12. The method of claim 1 , wherein displaying the virtual guide comprises:
displaying a plurality of a virtual axes each having parameters obtained from the virtual surgical plan, each of the virtual axes configured to guide installation of a respective guide pin in a talus of the patient.

13. The method of claim 1 , wherein displaying the virtual guide comprises:
displaying a virtual cutting surface having parameters obtained from the virtual surgical plan, the virtual cutting surface configured to guide resection of a talus of the patient.

14. A mixed reality system comprising:
a memory that stores at least a portion of a virtual surgical plan;
a visualization device; and
one or more processors configured to:
register a virtual model of a portion of an anatomy of an ankle of a patient to a corresponding portion of the anatomy of the ankle viewable via the visualization device, the virtual model obtained from a virtual surgical plan for an ankle arthroplasty procedure to attach a prosthetic to the anatomy;
display, via the visualization device and overlaid on the portion of the anatomy, a virtual guide that guides at least one of preparation of the anatomy for attachment of the prosthetic or attachment of the prosthetic to the anatomy; and
display a synthesized view showing a relative position of a tibial tray trial and a tibia of the patient, wherein the synthesized view shows a relative position of a posterior edge of the tibial tray and a posterior edge of a distal end of the tibia after the distal end of the tibia has been resected.

15. The mixed reality system of claim 14 , wherein the synthesized view shows a relative position of a posterior edge of the tibial tray and a posterior edge of the tibia.

16. The mixed reality system of claim 14 , wherein the one or more processors are further configured to:
register a virtual model of the tibial tray to a portion of the tibial tray viewable via the visualization device; and
generate the synthesized view based on the registration of the virtual model of the tibial tray and the registration of the virtual model of the portion of the tibia.

17. The mixed reality system of claim 14 , wherein the visualization device comprises a see-through lens through which a user is able to view the anatomy of the patient, and wherein, to display the synthesized view, the one or more processors are configured to cause the visualization device to project the synthesized view via the see-through lens.

18. The mixed reality system of claim 14 , wherein the anatomy comprises the tibia of the patient.

19. The mixed reality system of claim 14 , wherein, to display the virtual guide, the one or more processors are configured to:
display a plurality of virtual cutting surfaces each having parameters obtained from the virtual surgical plan, the plurality of virtual cutting surfaces configured to guide resection of the tibia.

20. The mixed reality system of claim 14 , wherein the anatomy comprises a talus of the patient.

21. The mixed reality system of claim 14 , wherein, to display the virtual guide, the one or more processors are configured to:
display a virtual axis having parameters obtained from the virtual surgical plan, the virtual axis configured to guide installation of a guide pin in a talus of the patient.

22. The mixed reality system of claim 14 , wherein, to display the virtual guide, the one or more processors are configured to:
display a virtual cutting surface having parameters obtained from the virtual surgical plan, the virtual cutting surface configured to guide resection of a talus of the patient.

23. A non-transitory computer-readable storage medium storing instructions that, when executed, cause one or more processors of a mixed reality system to:
register, via a visualization device, a virtual model of a portion of an anatomy of an ankle of a patient to a corresponding portion of the anatomy of the ankle viewable via the visualization device, the virtual model obtained from a virtual surgical plan for an ankle arthroplasty procedure to attach a prosthetic to the anatomy;
display, via the visualization device and overlaid on the portion of the anatomy, a virtual guide that guides at least one of preparation of the anatom

Assignees

• Howmedica Osteonics Corp

Inventors

• Poltaretskyi Sergii
• Cariou Damien
• Chaoui Jean
• Morvan Yannick
• Gaborit Vincent
• Dassonville Benjamin
• Alspaugh Julia C
• Reynolds David
• Nachtrab Dean
• Collins Timothy
• Stemniski Paul

Classifications

• G06N3/09

  Supervised learning · CPC title

• G06N3/0464

  Convolutional networks [CNN, ConvNet] · CPC title

• G06F18/2163

  Partitioning the feature space · CPC title

• A61B34/76

  Manipulators having means for providing feel, e.g. force or tactile feedback · CPC title

• A61B2034/105

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