Spinal Arthrodesis System with Segmented Anchoring and Multi-Implant Stabilization
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Solution Overview
Problem
Current spinal implant technologies face challenges in achieving stable and rapid bone fusion while minimizing invasivity during arthrodesis procedures, as they often require large incisions and can be unstable due to the need for deep penetration into vertebrae, which complicates access to intervertebral spaces and increases the risk of instability.
Innovation Solution
A spinal arthrodesis system combining intersomatic, interspinous, and facet implants, designed for mini-invasive implantation, which includes anchoring devices that maintain distance between vertebrae and provide stabilization through multiple points of attachment, allowing for reduced incision sizes and more reliable fusion by immobilizing multiple stability axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If deep penetration into vertebrae is used to ensure stable attachment, then implant stability is improved, but surgical invasivity and complexity increase
Solution Approach 1:
The spinal fixation system is divided into multiple independent components: a plate element for attachment to the spine, separate bone anchors for vertebral engagement, and connection elements. This segmentation allows each component to be optimized independently - the plate provides stability without requiring deep penetration, while the bone anchors handle the anchoring function separately through less invasive pathways.
Solution Approach 2:
Connection elements serve as intermediaries between the plate and bone anchors, transferring mechanical loads while allowing independent optimization of each component. This intermediary mechanism enables the system to achieve stable fixation without requiring the plate itself to penetrate deeply into vertebrae.
2Reliability
If multiple implants are combined to immobilize multiple stability axes, then arthrodesis reliability is improved, but device complexity and surgical difficulty increase
Solution Approach 1:
The system merges multiple stabilization functions into a single integrated construct. The plate can be configured to address multiple stability axes (anterior-posterior, lateral, rotational) while working in conjunction with bone anchors, thereby achieving comprehensive stabilization without requiring separate implants for each axis.
Solution Approach 2:
The plate element is designed with multi-functionality to address various stability requirements. It can provide anterior-posterior support, lateral stabilization, and rotational control through its structural design and attachment configuration, reducing the need for multiple specialized implants.
Data Source
AI summary
The present invention relates to a spinal arthrodesis system including at least two types of implants from among the three following types:an intersomatic implant (IS), including at least one passage (40) mating at least one anchoring device (1);an interspinous implant (IE), including at least two wings able to run along a portion of the vertebral spines (EI, ES);a facet implant (IF) including a bone attachment.