Segmented Spinal Rod Multi-Plane Alignment
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Solution Overview
Problem
Current methods are inadequate for effectively correcting spinal deformities such as scoliosis and kyphosis, as they fail to provide precise corrective forces to realign vertebral members across multiple planes, leading to incomplete alignment and potential surgical complications.
Innovation Solution
The method involves inserting a corrective rod into the spine, anchored at multiple vertebral levels, which applies sequential forces to align vertebral members by rotating and translating them into proper alignment, using extenders and anchors to maintain the rod's position and apply corrective forces across the spinal curvature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current correction methods are used, then surgical procedures can be performed, but precise corrective forces cannot be applied to realign vertebral members across multiple planes
Solution Approach 1:
The corrective rod is divided into multiple segmented portions that can be independently adjusted. Each segment can be rotated relative to adjacent segments to apply precise corrective forces to specific vertebral members, enabling multi-plane realignment while maintaining overall structural integrity
Solution Approach 2:
The corrective rod incorporates dynamic adjustment mechanisms allowing surgeons to modify the angle and position of rod segments during surgery. This enables application of precise corrective forces across multiple planes as vertebral members are realigned, rather than using a fixed rigid structure
2Manufacturing precision
If a corrective rod is inserted and anchored at multiple vertebral levels, then alignment can be improved, but the complexity of the surgical procedure increases
Solution Approach 1:
The corrective rod system serves multiple functions: it provides structural support, enables multi-plane correction through segmented rotation, and allows for intraoperative adjustment. This multi-functionality consolidates several correction mechanisms into a single device, reducing the need for multiple separate surgical steps
Solution Approach 2:
The corrective rod is pre-formed with specific curvature and segment configurations tailored to the patient's deformity pattern. This preliminary customization allows the rod to apply corrective forces immediately upon insertion, reducing the need for complex intraoperative shaping and adjustment procedures
3Measurement precision
If sequential corrective forces are applied to multiple vertebral members, then alignment precision improves, but surgical time increases
Solution Approach 1:
The corrective rod maintains continuous contact with multiple vertebral members through its segmented structure anchored at multiple levels. This continuous mechanical connection allows simultaneous application of corrective forces across multiple vertebrae rather than requiring sequential adjustment of each level, reducing surgical time while maintaining precision
Data Source
AI summary
The present application discloses methods for treating spinal deformities. One embodiment includes inserting an elongated corrective member into the patient. During insertion, the corrective member is operatively attached to a first vertebral member that applies a first corrective force to correct a first vertebral member alignment. The corrective member is further inserted into the patient and subsequently operatively attached to a second vertebral member that applies a second corrective force to correct a second vertebral member alignment. The corrective member is further inserted and subsequently operatively attached to a third vertebral member that applies a third corrective force to correct a third vertebral member alignment. The embodiment may further include operatively attaching the corrective member to additional vertebral members to correct further misalignment. In one embodiment, a second member is attached to the vertebral members after they have been aligned to maintain the alignment.