Modular Spine Stabilization System with Dynamic Fusion Conversion
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Solution Overview
Problem
Current spinal implant technologies lack a modular, customizable system that can transition from dynamic stabilization to fusion-promoting modes, limiting their adaptability and versatility in addressing varying spinal needs.
Innovation Solution
A modular, customizable spine stabilization system comprising compressible and distractable main bodies, domed caps, and compression-blocking inserts, allowing for dynamic stabilization and easy conversion into a fusion-enabling device, with components designed for use in the lumbar, thoracic, or cervical regions, and featuring adjustable geometry and bone growth enhancement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid implantable device is used to promote fusion, then fusion capability is improved, but ease of insertion and maneuverability deteriorate due to size limitations and delicate anatomical sites
Solution Approach 1:
The implant device incorporates a flexible sidewall that can transition between compressed and expanded states. During insertion, the device is compressed to reduce its profile for easier maneuverability. After insertion, the device is expanded to provide rigid structural support for fusion, thus resolving the contradiction between ease of insertion and fusion capability.
Solution Approach 2:
The device includes an insertable component that fits within the main body of the implant. This nested structure allows the device to be inserted in a compact form and then expanded or activated after placement, enabling both easy insertion and subsequent rigid fusion support.
2Ease of operation
If a flexible implant is used for dynamic stabilization, then ease of insertion and anatomical adaptability are improved, but fusion capability deteriorates
Solution Approach 1:
The implant device incorporates a flexible sidewall that can transition between compressed and expanded states. During insertion, the device is compressed to reduce its profile for easier maneuverability. After insertion, the device is expanded to provide rigid structural support for fusion, thus resolving the contradiction between ease of insertion and fusion capability.
Solution Approach 2:
The device is designed to perform multiple functions: it can provide dynamic stabilization when flexible and can be converted to provide rigid fusion support when expanded or activated. This multi-functionality allows a single device to address both dynamic stabilization and fusion needs, eliminating the need for separate implants.
3Ease of operation
If expandable fusion cages with inserts are used, then ease of insertion is improved, but adaptability deteriorates because they are not intended for use without their inserts
Solution Approach 1:
The device is designed to perform multiple functions: it can provide dynamic stabilization when flexible and can be converted to provide rigid fusion support when expanded or activated. This multi-functionality allows a single device to address both dynamic stabilization and fusion needs, eliminating the need for separate implants.
Solution Approach 2:
The implant system is divided into separable components including a main body and an optional insert. This segmentation allows the device to be used in different configurations: with the insert for fusion applications or without the insert for dynamic stabilization, providing versatility while maintaining ease of insertion through the compressed state.
Data Source
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AI summary
A modular, customizable system that provides components for assembling an implantable device is provided. The system allows the user to assemble an implantable spine stabilization device that is flexible and allows dynamic stabilization. The same system also provides components for assembling a rigid or non-flexible fusion-enabling spine stabilization device. The components of the system are easily interchangeable, allowing the user the ability to customize the assembled device for a true fit with the patient, as well as allow an easy conversion of the dynamic device into a fusion-enabling device. Associated insertion instruments and methods of use are also disclosed.