Registration of surgical tool with reference array tracked by cameras of an extended reality headset for assisted navigation during surgery

Patent metadata

Field	Value
Publication number	US-12484971-B2
Application number	US-202318171731-A
Country	US
Kind code	B2
Filing date	Feb 21, 2023
Priority date	Apr 29, 2020
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A camera tracking system is disclosed for computer assisted navigation during surgery. The camera tracking system is configured to identify a reference array tracked by a set of tracking cameras attached to an extended reality (XR) headset, and determine whether the reference array is registered as being paired with characteristics of one of a plurality of surgical tools defined in a surgical tool database. The camera tracking system is further configured to, based on the reference array being determined to not be registered and receiving user input, register the reference array to be paired with characteristics of one of the plurality of surgical tools selected based on the user input. The camera tracking system is further configured to provide a representation of the characteristics to a display device of the XR headset for display to the user.

First claim

What is claimed is:

1 . A system for computer assisted navigation during surgery, the system comprising:
an extended reality (XR) headset having a display device viewable by a user; a set of tracking cameras attached to the XR headset; a surgical tool; a reference array configured to be attached to the surgical tool and configured to be tracked by the set of tracking cameras; a controller coupled to the set of tracking cameras and adapted to determine whether the reference array brought into a field of view of the set of tracking cameras is unregistered and if so, automatically initiate a registration process, wherein based on the reference array being determined to not be registered, the controller provides to the display device a list of a plurality of surgical tools defined in a surgical tool database, and wherein a user may select one of the plurality of surgical tools by using one or more hand gestures recognizable by the set of tracking cameras of the XR headset.

2 . The system of claim 1 , wherein based on the reference array being determined to not be registered, the display device is configured to display a list of at least some of a plurality of the surgical tools defined in a surgical tool database for the user to select the one of the surgical tools to be registered as paired with the reference array.

3 . The system of claim 2 , wherein the user's selection is determined among the displayed list of the one of the surgical tools to be registered as paired with the reference array, based on tracking information from the set of tracking cameras indicating pose of a hand of the user in XR space relative to the displayed list.

4 . The system of claim 1 , wherein the set of tracking cameras is configured to send tracking information indicating pose of the reference array relative to the XR headset,
wherein based on the tracking information, a pose is determined for where the representation of the characteristics is to be displayed relative to the reference array; and wherein the display device is configured to display the representation of the characteristics with the determined pose relative to the reference array.

5 . The system of claim 1 , wherein the system is configured to
obtain tracking accuracy information characterizing accuracy at which the set of tracking cameras is presently tracking pose of the reference array; and provide an indication of the tracking accuracy information to the display device of the XR headset for display to the user.

6 . The system of claim 1 , wherein the system is further configured to:
obtain a graphical representation of the one of the plurality of surgical tools in at least 2-dimensions; receive tracking information from the set of tracking cameras indicating pose of the reference array relative to the XR headset; determine a pose for the graphical representation based on the tracking information; and provide the graphical representation as the representation of the characteristics to the display device of the XR headset for display with the determined pose.

7 . The system of claim 1 , wherein the system is further configured to:
obtain a last verified date which indicates when the one of the surgical tools was last verified to not have structural deformation; and provide an indication of the last verified date to the display device of the XR headset for display to the user.

8 . The system of claim 1 , wherein the system is further configured to:
determine when the reference array has been brought within an inspection region which is defined relative to a location of the XR headset; responsive to determining that the reference array has been brought within the inspection region, initiate the determination of whether the reference array is registered as being paired with characteristics of one of the plurality of surgical tools defined in the surgical tool database; and limit operation to receive user input to register the reference array as paired with characteristics of one of the plurality of surgical tools defined in the surgical tool database, to occur only while the reference array remains within the inspection region.

9 . The system of claim 1 , wherein the system is further configured to:
determine when the reference array has been brought within an inspection region which is defined relative to location of the XR headset; responsive to determining that the reference array has been brought within the inspection region, initiate the providing of the representation of the characteristics to the display device of the XR headset for display to the user; and responsive to determining that the reference array has exited the inspection region, cease any ongoing providing of the representation of the characteristics to the display device of the XR headset for display to the user.

10 . The system of claim 1 , wherein the system is further configured to:
identify poses of a plurality of fiducials among the reference array; and for each of the plurality of fiducials among the reference array having the identified poses, providing a graphical indicia for display by the display device at least partially overlapped with the identified pose of the fiducial.

11 . A system for computer assisted navigation during surgery, the system comprising:
an extended reality (XR) headset having a dynamic reference array (DRA) and a display device viewable by a user; a set of first tracking cameras attached to the XR headset; an auxiliary camera system having a set of second tracking cameras; a surgical tool; a reference array attached to the surgical tool and configured to be tracked by the set of first tracking cameras and the set of second tracking cameras; a robotic arm tracked by the set of first of tracking cameras and the set of second tracking cameras; a controller coupled to the set of first tracking cameras and adapted to automatically initiate a registration of the surgical tool when the reference array is brought into a field of view of the first set of tracking cameras; and wherein the auxiliary camera system is adapted to track the pose of the DRA.

12 . The system of claim 11 , wherein based on the reference array being determined to not be registered, the display device is configured to display a list of at least some of a plurality of the surgical tools defined in a surgical tool database for the user to select the one of the surgical tools to be registered as paired with the reference array.

13 . The system of claim 12 , wherein the user's selection is determined among the displayed list of the one of the surgical tools to be registered as paired with the reference array, based on tracking information from the set of first tracking cameras indicating pose of a hand of the user in XR space relative to the displayed list.

14 . The system of claim 11 , wherein the set of tracking cameras is configured to send tracking information indicating pose of the reference array relative to the XR headset,
wherein based on the tracking information, a pose is determined for where the representation of the characteristics is to be displayed relative to the reference array; and wherein the display device is configured to display the representation of the characteristics with the determined pose relative to the reference array.

15 . The system of claim 11 , wherein the system is configured to
obtain tracking accuracy information characterizing accuracy at which the set of first tracking cameras is presently tracking pose of the reference array; and provide an indication of the tracking accuracy information to the disp

Assignees

• Globus Medical Inc

Inventors

• CALLOWAY Thomas
• Dulin Isaac

Classifications

• G06T2207/30244

  Camera pose · CPC title

• G06T2200/24

  involving graphical user interfaces [GUIs] · CPC title

• G06T11/00

  Two-dimensional [2D] image generation · CPC title

• G06T7/20

  Analysis of motion (motion estimation for coding, decoding, compressing or decompressing digital video signals H04N19/43, H04N19/51) · CPC title

• G06F3/011

  Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00) · CPC title