Transverse Connector Adjustable Length Spinal Fixation
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Solution Overview
Problem
Existing spinal fixation devices face challenges in accommodating anatomical variations of the spinal column, requiring a transverse connector that is adjustable, adaptable to multiple dimensions, and has a low profile to minimize impact on surrounding soft tissue.
Innovation Solution
A transverse connector with a cross member connecting assembly, including rotatably coupled spinal rod connection members, adjustable band slots, and articulating balls, allowing for adjustable length and secure locking, while maintaining a low profile and smooth contours to reduce tissue trauma.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid transverse connector is used to connect spinal rods, then structural stability is improved, but adaptability to anatomical variations deteriorates
Solution Approach 1:
The transverse connector incorporates adjustable length mechanisms through threaded openings and set screws that allow the distance between spinal rod connection points to be modified. The cross member connecting assembly includes adjustable band slots that enable dynamic reconfiguration to match varying spinal anatomies while maintaining structural integrity once positioned.
2Adaptability or versatility
If a complex adjustable transverse connector is used to accommodate anatomical variations, then adaptability is improved, but device complexity increases
Solution Approach 1:
The transverse connector is divided into distinct functional modules: cross member connecting assembly with adjustable band slots, threaded openings with set screws for length adjustment, and spinal rod connection members. This segmentation allows each component to perform its specific adjustment function independently, simplifying the overall design while achieving multi-dimensional adaptability.
3Adaptability or versatility
If a bulkier transverse connector is used to provide adjustment mechanisms, then adaptability is improved, but soft tissue trauma increases
Solution Approach 1:
The transverse connector features a low-profile design where adjustment mechanisms are integrated within the cross member connecting assembly itself. The band slots and set screws are nested within the cross member structure, allowing adjustment functionality without requiring external bulky components that would protrude into surrounding soft tissue.
4Ease of operation
If a transverse connector with multiple adjustment dimensions is used, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The transverse connector combines multiple adjustment functions into a single integrated cross member connecting assembly. The band slots, threaded openings, and set screws work together as a unified system that enables simultaneous adjustment in multiple dimensions through coordinated manipulation of connected components, reducing the number of separate adjustment operations required.
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
The connector provides ease of operation, accommodates anatomical variances, and minimizes soft tissue trauma by allowing adjustable length and secure locking, enhancing spinal stabilization and support.
Implementation Method 1
a band set screw threadingly engaged with the threaded opening and movable relative to the band slot
Implementation Method 2
first and second spinal rod connection members rotatably coupled to opposing end portions of the cross member connecting assembly
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A transverse connector includes a cross member connecting assembly, and first and second spinal rod connection members rotatably coupled to opposing end portions of the cross member connecting assembly. The cross member connecting assembly includes a first band slot defined therethrough and a threaded opening extending through an upper surface of the cross member connecting assembly and into the first band slot. The cross member connecting assembly includes a band set screw threadingly engaged with the threaded opening and movable relative to the first band slot.