XR Headset Tool Registration for Camera-Tracked Surgical Navigation
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Solution Overview
Problem
Existing camera tracking systems for computer-assisted surgery face challenges in enabling surgeons to accurately register and navigate multiple surgical tools while minimizing errors and interruptions during procedures, especially when using extended reality (XR) headsets.
Innovation Solution
A camera tracking system integrated with an XR headset registers surgical tools by identifying a reference array and providing real-time feedback through the headset, allowing surgeons to confirm tool registration intuitively and efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera tracking system uses a set of cameras to track a set of fiducials attached to a surgical tool, then the surgeon can receive real-time pose feedback for navigation, but the process becomes complex and time-consuming when registering multiple surgical tools
Solution Approach 1:
The XR headset serves multiple functions: it provides the surgeon's primary view of the surgical field while simultaneously displaying registration feedback for multiple surgical tools. The single headset interface consolidates what would otherwise require multiple separate display systems, enabling the surgeon to register and navigate multiple tools without adding proportional complexity to the system architecture.
Solution Approach 2:
The system transitions from traditional 2D monitor-based feedback to a first-person perspective display through the XR headset. This dimensional change allows registration feedback to be overlaid directly on the surgeon's view of the surgical field, creating an intuitive spatial relationship between the surgical tool and its digital representation that reduces cognitive load during registration.
2Ease of operation
If the surgeon uses traditional display methods for registration feedback, then the system is simpler to implement, but the surgeon's concentration is frequently interrupted
Solution Approach 1:
The registration feedback display is merged with the surgeon's primary view through the XR headset. Instead of requiring the surgeon to shift attention between the surgical field and separate monitors, both views are combined in a single first-person perspective display, allowing continuous concentration on the surgical task while receiving registration feedback.
Solution Approach 2:
The XR headset acts as an intermediary device that delivers registration feedback directly into the surgeon's visual field. This intermediary approach eliminates the need for the surgeon to physically turn or shift position to view feedback, maintaining uninterrupted focus on the surgical field while receiving necessary registration information.
3Reliability
If the system provides detailed registration feedback for multiple surgical tools, then the registration accuracy improves, but the information overload increases and becomes difficult to manage
Solution Approach 1:
The system provides registration feedback specific to each surgical tool's local context within the surgeon's field of view. Each tool's registration status, fiducial positions, and alignment indicators are displayed in proximity to the corresponding physical tool, allowing the surgeon to process registration information for multiple tools without centralized information overload.
Solution Approach 2:
The registration feedback for multiple surgical tools is segmented and displayed independently within the XR headset view. Each tool's registration information is presented as a distinct visual element, allowing the surgeon to selectively attend to individual tool registrations without being overwhelmed by a monolithic display of all tool data simultaneously.
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.