Magnetic Spinal Implant Self-Alignment
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Solution Overview
Problem
Current spinal implant devices face challenges in easy insertion, proper alignment, and reduced risk of expulsion during multiple implant procedures, especially in non-uniform vertebral endplates, leading to potential complications.
Innovation Solution
The spinal implant incorporates one or more magnets for self-alignment and self-centering with additional implants, preventing misalignment and migration by utilizing magnetic fields to securely position devices between vertebrae endplates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple spinal implant devices are inserted into non-uniform vertebral endplates, then the quantity of implants increases to provide adequate stabilization, but misalignment and migration of implants occurs leading to potential complications
Solution Approach 1:
A magnet is embedded within the body of the spinal implant device, creating a nested structure where the magnetic alignment component is contained inside the implant housing. This allows the alignment function to be integrated without adding external complexity to the implant system.
Solution Approach 2:
A magnetic field is introduced as an intermediary force between multiple implant devices to enable automatic alignment. The magnetic interaction serves as a mediator that guides implant positioning without requiring direct mechanical contact or complex surgical manipulation.
2Ease of operation
If traditional spinal implant devices are used without magnetic alignment features, then the device structure remains simple, but proper self-alignment of multiple implants cannot be achieved
Solution Approach 1:
The spinal implant device performs self-alignment through the magnetic interaction between implants. When multiple implants are inserted, their embedded magnets automatically guide them into proper alignment relative to each other without requiring external alignment tools or complex surgical techniques.
Solution Approach 2:
The mechanical alignment process traditionally requiring surgical tools and manual positioning is replaced with a magnetic field-based system. The magnetic forces automatically guide implant positioning, substituting complex mechanical manipulation with a simpler magnetic interaction.
3Manufacturing precision
If magnets are embedded within the implant body, then self-alignment of multiple implants is achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The manufacturing process is segmented into distinct stages: first manufacturing the implant body without magnets, then separately embedding magnets into pre-prepared cavities within the implant bodies. This segmentation allows each component to be manufactured independently with optimized processes, reducing overall manufacturing complexity.
Solution Approach 2:
Cavities for magnet embedding are prepared in advance during implant body manufacturing, before the actual magnet insertion occurs. This preliminary preparation of embedding locations ensures precise magnet placement while simplifying the subsequent magnet insertion process, as the receiving structures are already in place.
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 magnetic spinal implant facilitates easier and safer insertion, reduces the risk of expulsion, and ensures accurate alignment of multiple implants, enhancing surgical precision and patient safety.
Implementation Method 1
The magnet generates a magnetic field that interacts with like configured spinal implant devices to prevent misalignment
Implementation Method 2
The magnetic field generated by the magnet interacts with like configured spinal implant devices to prevent misalignment
Data Source
AI summary
The present invention provides for an improved spinal implant which is useful in bone fixation surgeries. The spinal implant as described herein provides a surgeon with a device that can easily and safely be inserted into the space previously occupied by the spinal disc. The spinal implant contains one or more magnets positioned on or within the device to self-align with one or more additional spinal implants inserted therein for the purpose of preventing misalignment of a plurality of implant devices during surgical procedures and preventing implant expulsion.