3D Bone Registration Verification With Real-Time Surgical Feedback
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Solution Overview
Problem
Existing computer-assisted surgical systems lack an intuitive and efficient method to verify and monitor the accuracy of bone registration during joint replacement procedures, leading to potential errors and the need for additional verification steps that increase surgical time.
Innovation Solution
A system utilizing a visible light camera and 3-D bone model to confirm registration by comparing the physical movement of tracked bones with virtual models, providing real-time feedback and collision detection algorithms to ensure accurate alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional registration techniques are used to align bone coordinate frames, then registration accuracy is achieved, but surgical time is prolonged due to lack of intuitive verification
Solution Approach 1:
The system provides real-time visual feedback by overlaying the 3-D bone model with captured images of the actual bone. The registration accuracy is continuously monitored and displayed, allowing surgeons to verify alignment quality immediately without additional verification steps, thus maintaining precision while reducing time
Solution Approach 2:
A virtual 3-D copy of the bone model is created from pre-operative imaging and registered to the actual bone. This digital replica serves as a reference that can be visually compared with the physical bone in real-time, enabling intuitive verification of registration accuracy without requiring separate verification procedures
2Reliability
If additional verification steps are implemented to confirm registration accuracy, then error detection is improved, but surgical complexity increases
Solution Approach 1:
The verification function is merged with the primary registration display. The same interface that shows the 3-D bone model and captured images also provides registration accuracy indicators and collision detection alerts, eliminating the need for separate verification procedures and reducing overall system complexity
Solution Approach 2:
The system automatically performs verification by continuously comparing the registered 3-D bone model with real-time captured images of the actual bone. The collision detection algorithm automatically identifies misalignments without requiring manual verification steps, making the system self-verifying and reducing procedural complexity
Data Source
AI summary
A system for confirming registration of a bone involved in a joint replacement procedure is provided. The system includes a three-dimensional (3-D) bone model of the bone registered to a bone location, a visible light camera, and a display. The visible light camera captures images of the bone in the camera's field-of-view (FOV). The display is configured to display the captured images of the FOV and an image of the 3-D bone model, where the displayed location of the image of the 3-D bone model corresponds to the location of the 3-D bone model registered to the bone location. The registration may be confirmed if the displayed location of the image of the bone as captured by the visible light camera corresponds to the displayed location of the 3-D bone model.