Spinal Cage Deployable Spin-Plate for Stability
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Solution Overview
Problem
Current spinal cages used in spinal fusion surgeries often require additional plates to prevent movement, which can complicate the procedure and may not effectively maintain the desired positioning between vertebrae.
Innovation Solution
A spinal cage design with a deployable member, such as a spin-plate, that can be rotated and engaged with the spinal cage to secure vertebrae positioning, allowing for adjustable placement and enhanced stability during bone fusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate plate is attached to the vertebrae to prevent spinal cage movement, then the stability of the spinal cage is improved, but the device complexity increases
Solution Approach 1:
The patent combines the spinal cage and the stabilizing plate into a single integrated deployable member. The member includes a body portion that fits within the cage and a plate portion that extends outward to engage with the vertebrae, eliminating the need for separate components and reducing overall device complexity while maintaining stability.
Solution Approach 2:
The deployable member is designed to be deployed from a compressed state during insertion to an expanded state after positioning. This dynamic deployment allows the member to transition from a compact form during implantation to a stable, load-bearing structure afterward, achieving both ease of insertion and post-operative stability.
2Reliability
If a separate plate is used to secure the spinal cage, then the positioning stability is improved, but the ease of operation deteriorates
Solution Approach 1:
By integrating the plate and cage into a single deployable member, the surgeon operates with one component rather than coordinating multiple separate parts. The member deploys as a unified structure, simplifying the surgical procedure and reducing the time and complexity of assembly while maintaining secure positioning.
Solution Approach 2:
The deployable member is pre-configured in a compressed state that allows easy insertion through the cage, and then deployed in-situ to its expanded stable configuration. This preliminary compression facilitates simple insertion operations, while the subsequent deployment achieves the desired positioning stability without requiring complex assembly steps.
3Adaptability or versatility
If a deployable member is integrated into the spinal cage, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The deployable member's ability to transition between compressed and expanded states provides adaptability for different surgical scenarios. The same basic design can be deployed to various degrees and configurations depending on the specific anatomical requirements, offering versatility without requiring multiple different device types.
Solution Approach 2:
The integrated deployable member serves multiple functions: it provides structural support, prevents cage migration, and engages with the vertebrae through its plate portion. This multi-functionality within a single component achieves adaptability for different surgical needs while avoiding the complexity of assembling multiple specialized components.
Data Source
AI summary
Embodiments are disclosed which provide a spinal cage with a wall extending in a longitudinal direction defining an interior space. There is also provided a spin-plate that may be assembled into the spinal cage. The spin-plate may comprise a blade and a disc on a common shaft, and may be rotatable from an undeployed position to a deployed position. In some embodiments, the spin-plate may be assembled into the spinal cage by a translational motion perpendicular to a rotational axis of the spin-plate. The spin-plate may be captured in the spinal cage for certain angular positions. In some embodiments, there may be a snap-in feature when the spin-plate is assembled into the spinal cage, and there may be a rotational feature such that increased torque is required to advance beyond certain points.