Head-Mounted Surgical Guidance With Bone-Registered Overlays
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Solution Overview
Problem
Surgeons face challenges in performing unfamiliar or infrequently performed surgical procedures due to difficulties in navigating complex surgical environments, despite the assistance of existing surgical navigation systems.
Innovation Solution
A surgical system incorporating a head-mounted device (HMD) that provides computer-generated imagery aligned with a real-world view, using a navigation system with a localizer and bone tracker to register surgical plan data, including a virtual model of the bone and cut volume data, enabling precise surgical guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surgical navigation systems are used to track positions and orientations of surgical tools and anatomy, then surgical guidance is improved, but surgeons still encounter difficulty in performing unfamiliar or infrequently performed procedures
Solution Approach 1:
The system performs preoperative simulation of surgical procedures before the actual surgery. Surgeons can practice unfamiliar procedures in a virtual environment, allowing them to become familiar with the surgical steps and anatomy beforehand. This preliminary practice improves confidence and performance during the actual surgery without requiring repeated real surgeries for training.
2Loss of information
If computer-generated images are displayed on external monitors to assist surgeons, then surgical visualization is improved, but surgeons must take their eyes away from the surgical site to view the display
Solution Approach 1:
The system transitions surgical visualization from a two-dimensional external monitor to a three-dimensional head-mounted display that overlays computer-generated images directly onto the surgeon's field of view. This allows surgeons to see both the surgical site and navigational information simultaneously without moving their eyes, eliminating the time loss associated with looking away from the surgical site.
3Measurement precision
If surgical navigation systems track objects in real-time, then positional accuracy is improved, but the system complexity increases
Solution Approach 1:
The head-mounted display device performs multiple functions: it provides surgical visualization, displays navigational information, tracks surgical tools and anatomy, and enables preoperative simulation. By consolidating these functions into a single wearable device rather than requiring separate systems, the overall system complexity is reduced while maintaining real-time tracking precision.
Data Source
AI summary
A head-mounted device (HMD) for use with a navigation system. The navigation system includes a localizer and a bone tracker coupled to a physical bone. The localizer monitors the bone tracker to track a pose of the physical bone in a localizer coordinate system. Controller(s) obtain surgical plan data related to the physical bone. The surgical plan data includes a virtual model of the physical bone and cut volume data defining material to be removed from the physical bone in preparation for receiving an implant. The controller(s) register the HMD to the localizer coordinate system and provide, on the HMD display, computer-generated imagery representative of the surgical plan data, including the virtual model of the physical bone and the cut volume data. The controller(s) align and combine the computer-generated imagery with a real-world view of the physical bone.