Spinal Fusion Frame Angled Fixation Low Profile
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Solution Overview
Problem
Current spinal fusion devices lack effective systems for promoting fusion and bone growth, particularly in maintaining a low profile to fit within the disc space without protruding and providing secure fixation to vertebrae.
Innovation Solution
A surgical system comprising a frame and spacer with angled fixation members, windows for secure engagement, and optional graft chambers, allowing for the use of different materials like PEEK or allograft, and the ability to be used standalone or with a spacer, to promote spinal fusion and bone growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a traditional spinal fusion device is used, then fixation to vertebrae is achieved, but the device protrudes from the disc space and cannot maintain a low profile
Solution Approach 1:
The fixation members are oriented at angles (e.g., 45 degrees) relative to the longitudinal axis of the frame, transitioning from a linear arrangement to an angular/dimensional configuration. This angular orientation allows the fixation members to engage vertebrae effectively while keeping the overall profile height of the device low, resolving the contradiction between maintaining a low profile and achieving secure fixation.
2Length of stationary object
If the frame height is reduced to maintain a low profile, then protrusion is prevented, but the ability to engage fixation members is compromised
Solution Approach 1:
The frame incorporates asymmetric features including angled openings and specifically positioned engagement features that accommodate the angled orientation of fixation members. This asymmetric design allows fixation members to be engaged at optimal angles (e.g., 45 degrees) while maintaining a reduced frame height, thus preventing protrusion while preserving fixation capability.
3Shape
If angled fixation members are used to achieve low profile engagement, then protrusion is prevented, but the structural complexity increases
Solution Approach 1:
The fixation system is segmented into distinct components: the frame with integrated openings, separately positioned fixation members with specific angular orientations, and associated engagement features. This segmentation allows each component to be optimized independently - the frame maintains low profile while fixation members provide angled engagement - reducing overall system complexity compared to a monolithic design.
Data Source
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AI summary
The present application is generally directed to implantable systems, devices and related methods pertaining to spinal surgery. In particular, the present application discloses a frame and spacer system for inserting into a disc space. The frame and spacer system is of low profile. The frame can receive different fixation devices, including threaded and non-threaded fixation devices.