Spinal Osteotomy Prosthesis With Navigated Pedicle Screw Placement
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Solution Overview
Problem
Existing spinal fusion and disc arthroplasty procedures often fail to effectively address severe spinal deformities such as scoliosis and dislocations, while immobilizing the spine and failing to preserve spinal motion.
Innovation Solution
A prosthetic system with upper and lower joint components forming an articulating joint between vertebrae, allowing movement, and a posterior support secured to the pedicle, combined with surgical methods for preoperative planning and robotic guidance to correct spinal alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional methods (Wiltse method, Golub method, Smith-Petersen method) are used for pedicle screw placement, then surgical procedures can be performed, but the methods require significant surgical skill and experience, have high risks of complications, and lack precise control over screw trajectory and depth
Solution Approach 1:
The patent introduces a navigation system comprising a tracking device, processing device, and display device as an intermediary between the surgeon and the surgical field. This system provides real-time guidance on screw trajectory, depth, and orientation, enabling precise pedicle screw placement without requiring extensive surgical experience with traditional freehand techniques.
Solution Approach 2:
The patent replaces the mechanical skill-based traditional methods (Wiltse, Golub, Smith-Petersen techniques) with a computer-based navigation system that uses tracking markers, coordinate systems, and visual feedback to guide screw placement. This substitution transforms the surgical process from one relying on surgeon expertise to one relying on technological guidance.
2Reliability
If traditional surgical methods are used, then surgery can be performed, but intraoperative fluoroscopy requires repeated exposure to high-radiation doses for both patient and surgical team
Solution Approach 1:
The navigation system performs preliminary tracking and verification of screw trajectory and position before actual screw insertion. By establishing the coordinate system and tracking markers in advance, the system allows surgeons to plan and verify screw paths without repeated intraoperative fluoroscopy, reducing radiation exposure while maintaining placement accuracy.
3Ease of operation
If open surgical approaches are used for spinal osteotomy, then adequate exposure is achieved, but significant muscle dissection and tissue trauma occur
Solution Approach 1:
The patent replaces the mechanical open surgical approach with a minimally invasive percutaneous technique guided by navigation technology. The system allows adequate exposure and visualization through small incisions by using tracking markers attached to surgical instruments and real-time digital visualization, thereby avoiding extensive muscle dissection and tissue trauma associated with traditional open approaches.
Data Source
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AI summary
Disclosed are systems, devices, methods and surgical procedures for altering and/or correcting the alignment of adjacent bones, including bones of the spine.