XR Headset Tool Registration Using Tracked Reference Arrays
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Solution Overview
Problem
Existing camera tracking systems for computer-assisted surgery face challenges in accurately registering surgical tools with a reference array while minimizing errors and interruptions during surgical procedures, particularly when using extended reality (XR) headsets.
Innovation Solution
A camera tracking system integrated with an XR headset that enables intuitive and efficient registration of surgical tools by displaying tool characteristics and providing real-time feedback, allowing surgeons to confirm correctness through the headset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional camera tracking systems are used for tool registration, then the system can track surgical tools, but the registration process is time-consuming and prone to errors
Solution Approach 1:
The system displays real-time feedback showing the detected reference array and proposed tool characteristics to the surgeon through the XR headset. This allows the surgeon to verify the registration is correct before confirming, reducing errors while maintaining efficiency through immediate visual confirmation rather than lengthy verification procedures.
Solution Approach 2:
The system creates a digital copy or representation of the surgical tool characteristics based on the detected reference array. This digital twin allows for rapid verification and confirmation of tool identity without requiring physical measurement or manual entry, significantly reducing registration time while maintaining accuracy.
2Reliability
If traditional camera tracking systems are used for tool registration, then the system can identify surgical tools, but interruptions to surgeon concentration occur during the registration process
Solution Approach 1:
The XR headset acts as an intermediary device that delivers registration information directly to the surgeon's field of view. This allows the surgeon to maintain concentration and continue the natural surgical workflow while receiving necessary registration feedback, eliminating interruptions that would occur with traditional external display systems requiring the surgeon to look away.
Solution Approach 2:
The system transitions from 2D display screens to 3D spatial visualization within the surgeon's field of view through the XR headset. This dimensional change allows registration information to be perceived naturally in the surgical environment without requiring the surgeon to shift attention between different planes or devices, maintaining workflow continuity.
3Ease of manufacture
If manual registration methods are used, then surgical tools can be registered with the camera tracking system, but errors in tool selection increase
Solution Approach 1:
The system provides real-time visual feedback displaying the detected reference array pattern and the proposed tool characteristics to the surgeon. This allows the surgeon to verify that the correct tool is being registered before confirmation, significantly reducing selection errors while keeping the process simple through automatic detection rather than manual input.
Solution Approach 2:
The system automatically detects and identifies the surgical tool by recognizing the reference array pattern on the tool itself. This self-service capability eliminates manual tool identification and selection, reducing human error while maintaining procedural simplicity through automated recognition rather than complex manual registration steps.
Data Source
AI summary
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.