Corpectomy Implant Helical Undulating Geometry Selective Bone Growth
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Solution Overview
Problem
Current spinal fusion implants lack effective mechanisms to promote bone growth while preventing unwanted bone growth in specific regions, leading to instability and reduced fusion efficacy.
Innovation Solution
The implant features a combination of generalized helical elements and undulating planar elements, with specific geometries and surface textures to facilitate bone growth on targeted areas while restricting it on the posterior side, using a structured design with central and peripheral elements to enhance stability and fusion rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional spinal fusion implant is used, then the implant provides basic structural support, but it lacks effective mechanisms to promote bone growth while preventing unwanted bone growth in specific regions
Solution Approach 1:
The implant is divided into multiple functional zones with distinct surface characteristics. The posterior side features a smooth surface to prevent bone growth, while the lateral and anterior sides have rough surfaces to promote bone growth. This segmentation allows different regions of the implant to serve different functions in bone fusion control.
Solution Approach 2:
Different surface qualities are applied to different locations on the implant. The posterior surface is intentionally kept smooth with a different texture than the lateral and anterior surfaces, which are designed with rough textures. This local differentiation enables selective bone growth promotion and restriction in specific anatomical regions.
2Reliability
If the implant allows bone growth in all directions, then bone fusion occurs, but unwanted bone growth may disturb the spinal column
Solution Approach 1:
The implant incorporates surface texture variations where the posterior surface is smooth to prevent harmful bone growth toward the spinal column, while lateral and anterior surfaces are rough to promote beneficial bone fusion. This local quality differentiation directly addresses the harmful effect of unwanted bone growth in specific directions.
Data Source
AI summary
A corpectomy implant is comprised of multiple layers of structural elements having a generalized helical geometry. These elements are separated by structural elements having an undulating planar geometry. The corpectomy implant also includes centrally located structural elements that have a closed loop geometry.