Intra-operative Implant Position Deviation Tracking
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Solution Overview
Problem
Surgeons face challenges in determining intra-operative deviations from planned implant positions during orthopaedic surgeries, leading to potential misplacement of implants due to factors like the reaming process, without immediate awareness of the discrepancy.
Innovation Solution
A computer-implemented method generates a 3D model of the patient's bone, determines planned and actual implant positions using anatomical features, and calculates differences to guide corrective actions, utilizing a data processing device and tracking instruments to measure distances and adjust implant positions accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If surgical planning software is used to plan implant position, then the planned position can be determined, but the actual intra-operative position may vary without the surgeon's awareness
Solution Approach 1:
The system continuously compares the actual intra-operative implant position with the pre-planned position and provides feedback to the surgeon. This is achieved by tracking the implant's real-time position using optical tracking technology and comparing it against the planned position stored in the system, enabling the surgeon to make corrective adjustments if deviations are detected
Solution Approach 2:
The patent replaces manual measurement and estimation methods with an automated optical tracking and computer processing system. The system uses optical markers attached to surgical instruments and implants, captured by infrared cameras, to automatically calculate and display position deviations without requiring manual measurement by the surgeon
2Productivity
If the surgeon relies on planned position without intra-operative verification, then the surgical procedure can proceed efficiently, but the implant may be misplaced
Solution Approach 1:
The system performs preliminary surgical planning before the operation to establish the target implant position, and then maintains continuous intra-operative monitoring throughout the procedure. This allows the surgeon to proceed efficiently with the knowledge that position verification is already in place, eliminating the need for time-consuming manual measurements while ensuring precision
Solution Approach 2:
The system automatically tracks and calculates implant position deviations without requiring active intervention or manual measurement by the surgeon. The optical tracking system and computer processing automatically perform the verification functions, allowing the surgeon to focus on the surgical procedure while the system handles position monitoring independently
Data Source
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AI summary
A system and computer implemented method for use in determining the deviation-of an intra-operative position of an orthopaedic implant from a planned position is described. The position of the orthopaedic implant in the bone is defined by a plurality of implant position parameters. The distance of a plurality of anatomical features in a three dimensional model of the surface of the bone relative to a model of the implant at a first position is calculated. The first position corresponds to a first set of values for the implant position parameters. The distance of the plurality of anatomical features to a model of the implant at a second position in the bone is calculated. The second position corresponds to a second set of values for the implant position parameters, and the second position is different to the first position.