Spinal Correction Instrument with Movable Arms and Pivots
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Solution Overview
Problem
Current surgical methods for correcting spinal disorders, such as degenerative disc disease and scoliosis, often fail to provide effective alignment and stabilization, leading to persistent pain and mobility issues, as they lack precise control over sagittal deformities and curvature corrections.
Innovation Solution
A surgical instrument system with movable arms and pivots that allow for relative rotation of spinal constructs, enabling precise correction and stabilization of the spine by adjusting angles and positions of spinal rods and pedicle screws, facilitating the contouring of spinal rods to match the natural anatomy and providing adjustable locking mechanisms for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional spinal correction methods are used, then surgical simplicity is maintained, but correction precision and alignment control are insufficient
Solution Approach 1:
The surgical instrument is divided into multiple functional components including first and second arms, pivots, and locking mechanisms. Each component performs a specific function in the correction process, allowing for precise control while maintaining modularity. The first arm engages with a first spinal construct, the second arm engages with a second spinal construct, and they work together through the connecting pivot to achieve coordinated correction.
Solution Approach 2:
The instrument incorporates movable arms that can rotate relative to each other through pivots, allowing dynamic adjustment during surgery. The arms can be positioned at different angles and locked in place, providing both flexibility during the correction process and stability once the desired alignment is achieved. This dynamic capability enables precise control over the correction amount and orientation.
2Adaptability or versatility
If spinal constructs are rigidly fixed, then stability is improved, but adaptability to different spinal configurations is reduced
Solution Approach 1:
The instrument uses pivots that allow the arms to rotate and adjust to different angular configurations. During surgery, the arms can be freely positioned to match the patient's specific spinal anatomy, providing adaptability. Once positioned, locking mechanisms secure the arms in place, ensuring stability for the duration of the procedure and maintaining the corrected spinal alignment.
Solution Approach 2:
The instrument allows preliminary positioning and adjustment of spinal constructs before final fixation. The movable arms enable surgeons to pre-align the spinal constructs at the desired angles and positions, verify the correction, and then lock everything in place. This preliminary action ensures both adaptability to individual patient anatomy and stability of the final configuration.
Data Source
AI summary
A surgical instrument comprises a first arm extending between a first end and a second end including a first pivot engageable with a first spinal construct disposed with a first vertebral surface. A second arm is connected with the first arm via a second pivot. The second arm extends between a first end and a second end including a third pivot engageable with a second spinal construct disposed with a second vertebral surface. The arms are relatively movable to rotate the first spinal construct relative to the first pivot and the second spinal construct relative to the third pivot such that the first vertebral surface is moved relative to the second vertebral surface. Systems and methods of use are disclosed.