Transverse Connector with Dual Locking Heads for Spinal Rods
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Solution Overview
Problem
Existing spine stabilization systems using posterior rod constructs often sacrifice adjustability or stability due to the need for separate locking mechanisms for transverse connectors, which complicate the surgical process and limit the flexibility of rod positioning.
Innovation Solution
A transverse connector system with dual locking heads and pivot arms that simultaneously secure both the transverse rod and elongated rods using a single fastening mechanism, allowing for angular and linear adjustments, thereby enhancing stability and ease of use during surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate locking mechanisms are used for transverse connector and transverse rod, then stability is improved, but device complexity increases and adjustability is lost
Solution Approach 1:
The patent combines two separate locking mechanisms into a single integrated locking mechanism that simultaneously secures both the transverse connector to the elongated rod and the transverse rod to the locking heads. This single mechanism includes a locking block that engages with both components, eliminating the need for separate set screws or locking devices while maintaining stability.
Solution Approach 2:
The locking mechanism is designed to perform multiple functions simultaneously: it locks the transverse connector to the elongated rod, secures the transverse rod in position, and allows for angular and linear adjustments. The universal design enables one mechanism to replace what would traditionally require two separate locking systems.
2Reliability
If separate locking mechanisms are used for transverse connector and transverse rod, then stability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent combines two separate locking mechanisms into a single integrated locking mechanism that simultaneously secures both the transverse connector to the elongated rod and the transverse rod to the locking heads. This single mechanism includes a locking block that engages with both components, eliminating the need for separate set screws or locking devices while maintaining stability.
3Reliability
If fixed-size transverse rod is used, then stability is improved, but adaptability deteriorates
Solution Approach 1:
The patent implements dynamic adjustability in the transverse rod system, allowing the rod to be positioned at various angles along the horizontal axis and at different locations along the elongated rod. The locking mechanism maintains stability once positioned while enabling adjustment during surgery to accommodate different anatomical configurations and surgical requirements.
4Reliability
If multiple separate locking steps are used, then stability is improved, but loss of time increases
Solution Approach 1:
The patent combines two separate locking mechanisms into a single integrated locking mechanism that simultaneously secures both the transverse connector to the elongated rod and the transverse rod to the locking heads. This single mechanism includes a locking block that engages with both components, eliminating the need for separate set screws or locking devices while maintaining stability.
Data Source
AI summary
A transverse connector system having a first and a second locking head, and a transverse rod that is secured by the first and second locking heads. The first and second locking heads are provided with a first and second pivot arm for engaging and securing first and second elongated rods. The first and second locking heads each simultaneously engage and secure the transverse and elongated rods separately.