Robotized FAI Resurfacing Controller for Osteophyte Removal
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Solution Overview
Problem
Current computer-assisted orthopedic surgery methods, such as optical navigation and C-arm validation, face challenges like increased operative time, line-of-sight constraints, and cost-effectiveness issues, while surgeons seek precision and accuracy through robotized systems for procedures like femoroacetabular impingement resurfacing.
Innovation Solution
A robotic system with a FAI resurfacing controller that generates a bone model, identifies osteophytes, and creates a navigation file for precise osteophyte removal, using a robot arm with 6-DOF movement and tracking apparatus for accurate bone resurfacing without surgeon intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical navigation is used to assist manual surgery, then measurement precision is improved, but operative time increases and line-of-sight constraints hamper surgical flow
Solution Approach 1:
The patent replaces optical navigation systems with a robotized mechanical system that uses pre-operative imaging data and robotic positioning to achieve precise bone resurfacing. The robotic arm with 6-DOF movement and integrated tracking eliminates the need for intraoperative optical tracking, thereby reducing operative time while maintaining or improving measurement precision.
Solution Approach 2:
The system performs preliminary actions by acquiring complete bone imaging data pre-operatively and creating a detailed digital model before surgery. This allows the robotic system to be precisely guided during surgery without requiring time-consuming intraoperative navigation setup, thus reducing operative time while maintaining high measurement precision.
2Measurement precision
If C-arm validation is used for surgical validation, then measurement precision is improved, but device complexity and cost increase due to bulky equipment
Solution Approach 1:
The patent replaces the bulky C-arm validation equipment with a robotized system that integrates tracking and validation functions into the robotic arm itself. The robotic system uses pre-operative imaging and computational guidance to achieve validation without requiring separate C-arm equipment, thereby reducing device complexity and cost while maintaining validation precision.
Solution Approach 2:
The robotic system performs multiple functions including bone modeling, osteophyte identification, navigation, and validation within a single integrated platform. This multi-functionality eliminates the need for separate C-arm validation equipment, reducing overall device complexity and cost while maintaining the necessary validation precision.
3Ease of operation
If manual surgery is performed by surgeons, then ease of operation is maintained, but manufacturing precision and accuracy decrease
Solution Approach 1:
The robotic system performs the resurfacing operation autonomously based on pre-planned trajectories and real-time tracking, eliminating the need for manual surgeon manipulation during the critical resurfacing phase. This self-service capability ensures consistent manufacturing precision and accuracy while the system remains easy to operate through intuitive programming and monitoring interfaces.
Solution Approach 2:
The patent replaces manual surgical manipulation with a robotized mechanical system that executes precisely controlled bone resurfacing. The robotic arm with 6-DOF movement provides superior positioning accuracy and repeatability compared to manual techniques, while the system maintains ease of operation through computer-based control and monitoring.
Data Source
AI summary
Systems and methods are described herein for resurfacing bones, and in particular, for detecting and resurfacing one or more femoroacetabular impingements (FAIs). A FAI resurfacing controller may be used to perform this detecting and resurfacing of FAIs. The FAI resurfacing controller may include a bone model generator to receive bone imaging and to generate a model of at least one osteophyte and of a surface of a native bone surrounding the at least one osteophyte. The FAI resurfacing controller may include an osteophyte identifier to set a virtual 3D boundary surface between native bone surface and the at least one osteophyte. The FAI resurfacing controller may include a resurfacing navigator to generate and output a navigation file. The navigation file may include the model with the 3D boundary surface between native bone surface and the at least one osteophyte.