Segmented Interbody with Dynamic Members for Vertebral Fit
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Solution Overview
Problem
Current prosthetic interbodies with rigid surfaces fail to mimic the curvature of adjacent vertebral bodies, leading to gaps and potential dislocation due to inadequate bone growth and misalignment after discectomy, necessitating a solution that maintains disc space, promotes bone integration, and resists dislocation.
Innovation Solution
An interbody with independently configured and dimensioned members that can move from a first to a second position, featuring a plurality of members with adjustable ends and springs for flexible insertion and secure attachment, allowing for customizable fit and enhanced stability between vertebral bodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If rigid surfaces are used on prosthetic interbodies, then manufacturing is simplified, but gaps form between the vertebral body and interbody due to inability to mimic curvature
Solution Approach 1:
The interbody surface is divided into multiple independent members (302, 304, 306, 308) that can move relative to each other, allowing the segmented structure to conform to the curved surface of the vertebral body while maintaining manufacturing simplicity for each individual component
Solution Approach 2:
The members are configured to move from a first position to a second position, transforming the static rigid structure into a dynamic system that can adapt its shape to match the curvature of the vertebral body, thereby eliminating gaps without requiring complex custom manufacturing
2Stability of the object's composition
If rigid surfaces are used on prosthetic interbodies, then structural stability is maintained, but dislocation occurs due to gaps and inadequate bone growth
Solution Approach 1:
The members are configured with curved surfaces that mimic the curvature of the adjacent vertebral bodies, eliminating gaps and improving contact surface area to prevent dislocation while maintaining structural stability through proper geometric conformity
Solution Approach 2:
The interbody structure changes its geometric parameters by allowing members to move between positions, adapting the contact surface to match the vertebral body curvature, which enhances stability and prevents dislocation without sacrificing structural integrity
3Ease of manufacture
If fixed-size interbodies are used, then manufacturing is simplified, but proper fit cannot be achieved due to varying disc space sizes between patients
Solution Approach 1:
The interbody is segmented into multiple members that can move independently, allowing a standardized manufactured unit to adapt to varying disc space sizes and curvatures in different patients, combining manufacturing simplicity with patient-specific adaptability
Solution Approach 2:
The dynamic movement of members between positions enables a single standardized interbody design to accommodate different disc space dimensions and curvatures, providing versatility without requiring multiple custom-manufactured sizes
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The interbody effectively maintains disc space, promotes bone growth, and reduces the likelihood of dislocation by providing a customizable fit and increased contact surface, facilitating stable integration and long-term stability between vertebrae.
Implementation Method 1
a spring member extending into the interior space of the interbody and configured to move from a first position to a second position
Data Source
AI summary
An interbody at least one surface including a plurality of members that are independently configured and dimensioned to move from a first position to a second position is disclosed.