Computer-Assisted Orthopedic Feedback System
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Solution Overview
Problem
Current surgical navigation systems for orthopedic surgery lack flexibility, precision, and cost-effectiveness, often relying on fiducial markers and complex calibration processes that are time-consuming and limit the surgeon's ability to deviate from pre-operative plans during surgery.
Innovation Solution
A computer-assisted orthopedic feedback method and system that provides flexible guidance by tracking the position and orientation of surgical objects relative to pre-operative plans, using a surgical navigation system that registers patient structures and surgical objects based on surface data, allowing for real-time feedback and dynamic referencing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If robotic surgical systems are used to carry out pre-operative plans, then surgical precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent uses a surgical template that is a physical copy or replica of the pre-operative plan, transferring planned paths and positions directly to a tangible guide that fits the patient's anatomy. This copying approach achieves surgical precision without requiring complex robotic systems, as the template itself embodies the planned surgical paths.
Solution Approach 2:
The patent replaces the mechanical robotic arm system with a passive surgical template that provides mechanical guidance through its physical structure. The template's geometry directly guides surgical instruments along pre-planned paths, eliminating the need for active robotic mechanisms while maintaining precision.
2Manufacturing precision
If robotic surgical systems are used, then surgical precision is improved, but flexibility for surgeon intervention decreases
Solution Approach 1:
The surgical template is designed to be dynamic rather than rigidly fixed, allowing the surgeon to adjust and deviate from planned paths when necessary. The template provides guidance while permitting manual intervention and adaptation during surgery, combining precision with surgical flexibility.
3Measurement precision
If navigation systems with calibration processes are used, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The surgical template is prepared in advance during the pre-operative planning phase, with all calibration and positioning information built into the template's physical structure before surgery begins. This preliminary action eliminates the need for time-consuming calibration procedures during the actual surgery, as the template is already pre-calibrated to the patient's anatomy.
4Measurement precision
If fiducial markers and complex calibration processes are used, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts and eliminates the need for fiducial markers and complex calibration processes by incorporating all necessary positioning information directly into the surgical template's physical structure. The template itself serves as the reference framework, removing the separate calibration components and reducing overall system complexity.
Data Source
AI summary
A method and system for computer assisted orthopedic feedback of at least one surgical object relative a pre-operative plan are disclosed. The pre-operative plan includes a virtual object, which is the virtual representation of the surgical object, and a virtual structure, which is the virtual representation of the patient structure. The method comprises providing the pre-operative plan including planned position and orientation of the virtual object relative to of the virtual structure; obtaining the position of the patient structure based on a surface of the patient structure using a surgical navigation system; obtaining the position of the surgical object using the surgical navigation system; registering the patient structure to the virtual structure and the surgical object to the virtual object; tracking a current position and orientation of the surgical object using the surgical navigation system; and providing feedback of a current position and orientation of the surgical object relative to the planned position and orientation of the virtual object based on the tracked current position and orientation of the surgical object.