Spinal Fusion Barrier Material for Osteogenic Retention
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Solution Overview
Problem
Current spinal fusion methods face challenges in maintaining effective delivery and retention of osteogenic materials within the interbody space, particularly in minimally-invasive procedures where access is limited, leading to potential migration of these materials and suboptimal fusion outcomes.
Innovation Solution
The method involves providing surgical access to the interbody space through openings in the disc annulus, delivering a loadbearing spinal spacer and an osteogenic substance, along with a barrier material to inhibit migration of the osteogenic substance, using cannulated devices and syringe systems for precise placement, with recombinant human bone morphogenic protein and resorbable polymers as key components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If minimally-invasive surgical approaches are used to access the interbody space, then patient trauma is reduced and recovery is accelerated, but surgical access is limited and osteogenic material retention is compromised
Solution Approach 1:
A barrier material is introduced as an intermediary substance between the osteogenic material and the opening in the disc annulus. This barrier material physically blocks the migration path of osteogenic material through the opening while allowing the minimally-invasive approach to be maintained, thus resolving the contradiction between surgical accessibility and material retention.
2Ease of operation
If osteogenic material is delivered through limited access openings, then minimally-invasive benefits are achieved, but material migration outside the interbody space occurs
Solution Approach 1:
The barrier material is delivered in advance to block the opening in the disc annulus before osteogenic material migration can occur. This preliminary protective action prevents the harmful effect of material migration while maintaining the benefits of the minimally-invasive delivery approach.
3Quantity of substance
If the opening in the disc annulus is maintained for material delivery, then osteogenic substance can be implanted, but material can escape through the same opening
Solution Approach 1:
The barrier material serves as a mediator that allows the opening to remain open for osteogenic substance delivery while simultaneously preventing substance loss through migration. The barrier material is positioned to block the escape path while permitting controlled delivery.
Data Source
AI summary
Described are interbody spinal fusion methods, and kits useful therefor, in which a barrier material is interposed between an osteogenic material and an opening in the disc annulus providing access to the interbody space, wherein the barrier material is effective to inhibit migration of the osteogenic substance to the opening.