Spinal Rod Verification via Image Data Processing
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Solution Overview
Problem
Orthopedic surgeons lack a precise method for determining the shape and curvature of spinal rods needed to correct spinal column curvatures, relying on informal approaches without technological support.
Innovation Solution
A method involving image data processing to detect rod attachment positions, calculate parameters for a corrective spinal rod, and enter desired spinal column parameters to determine the necessary rod shape and length, using a system with a data processing device and camera to assist in spinal correction surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If surgeons rely on experience-based informal approaches to determine spinal rod shape and curvature, then the surgical process remains simple and quick, but the precision and accuracy of spinal curvature correction deteriorates
Solution Approach 1:
The patent creates a digital copy of the patient's spinal column using medical imaging data (CT or MRI). This virtual model allows precise measurement and planning of rod shape and curvature without adding physical complexity to the surgical site. The digital replica enables accurate preoperative planning and intraoperative verification.
Solution Approach 2:
The patent replaces the mechanical/experience-based approach of manually determining rod shape with an automated computational system. Software algorithms automatically calculate the optimal rod geometry based on the digital spinal model and desired correction parameters, eliminating the need for surgeons to rely on subjective experience.
2Reliability
If surgeons use experience-based methods for spinal rod determination, then the surgical workflow remains simple, but the reliability of achieving desired spinal alignment deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the actual position of pedicle screws and resulting spinal alignment are captured using imaging devices during surgery. This actual data is compared against the preoperative plan, allowing real-time verification and adjustment. The system provides closed-loop feedback to ensure the desired alignment is achieved.
Solution Approach 2:
The patent performs preliminary planning and calculation of the optimal rod shape and curvature before surgery using the patient's specific anatomical data. This preoperative simulation and planning phase allows the surgical team to prepare exact specifications for the corrective rod, ensuring reliable alignment correction when the rod is implanted.
3Manufacturing precision
If detailed imaging and calculation methods are implemented for spinal rod determination, then the accuracy of rod placement improves, but the time required for preoperative planning and intraoperative verification increases
Solution Approach 1:
The patent performs detailed imaging, 3D reconstruction, and rod geometry calculations during the preoperative planning phase. By completing these time-consuming tasks before surgery, the system enables rapid execution during the actual surgical procedure. The preoperative plan includes all necessary measurements and rod specifications, eliminating the need for time-consuming intraoperative calculations.
Solution Approach 2:
The patent creates a reusable digital model of the patient's spine that can be manipulated and analyzed multiple times during planning without additional imaging time. This virtual replica allows iterative optimization of rod design and verification of different correction scenarios before finalizing the surgical plan.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method provides a precise and systematic approach to determining and verifying the correction of spinal column curvatures, reducing reliance on experience and improving the accuracy of spinal rod placement, thereby enhancing surgical outcomes.
Implementation Method 1
detecting a rod attachment position for each pedicle screw by capturing image data from the pedicle screws at a surgical incision
Implementation Method 2
determining first parameters of the uncorrected spinal column with a data processing device
Data Source
AI summary
A method for determining a spinal rod for correcting a curvature of a spinal column of a living being, including the steps of detecting a rod attachment position for each pedicle screw by capturing image data from the pedicle screws at a surgical incision determining first parameters of the uncorrected spinal column with a data processing device entering second parameters of a desired arrangement of a desired corrected spinal column and calculating data characterizing a corrective spinal rod for achieving the desired corrected spinal column when the corrective spinal rod is attached to the pedicle screws, the data calculated based on the rod attachment positions and the second parameters.