Spinal Bone Fastener with Movable Receiver for Angulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current spinal implant systems for treating disorders such as scoliosis and degenerative disc disease often require complex procedures and instruments for proper alignment and fixation, which can be invasive and costly, and lack flexibility in angulation and adjustment capabilities.
Innovation Solution
A spinal implant system featuring a bone fastener with a movable receiver and anchor configuration, allowing for controlled distraction, lordosis correction, and transverse angulation, using a tool to adjust the orientation of the receiver relative to the bone anchor, enabling minimally invasive procedures and flexible angulation without bending the spinal rod.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional spinal implant systems are used with complex distractors and fixed-angle instruments, then proper alignment and fixation can be achieved, but the procedure becomes invasive, costly, and lacks flexibility in angulation adjustments
Solution Approach 1:
The receiver is designed with movable components that allow dynamic adjustment of the spinal rod orientation. The tool engages with the receiver to enable controlled distraction and lordosis correction, allowing the system to adapt to different angulation requirements during surgery rather than requiring fixed-angle instruments for each adjustment.
Solution Approach 2:
The bone fastener system integrates multiple functions into a single device: the receiver can perform controlled distraction, lordosis correction, and transverse angulation adjustments. This multi-functional design eliminates the need for multiple specialized instruments (complex distractors, fixed-angle tools) while maintaining alignment and fixation capabilities.
2Manufacturing precision
If complex distractors and fixed-angle instruments are used for alignment, then proper spinal rod positioning can be achieved, but the surgical procedure becomes more invasive and costly
Solution Approach 1:
The alignment and angulation adjustment functions are merged into the bone fastener receiver itself. The tool engages directly with the receiver to perform all necessary adjustments (controlled distraction, lordosis correction, transverse angulation) in a single integrated operation, eliminating the need for multiple separate complex instruments and reducing surgical invasiveness.
3Adaptability or versatility
If traditional fixed-angle bone fasteners are used, then structural stability is maintained, but the system lacks flexibility for adjusting receiver orientation relative to the bone anchor
Solution Approach 1:
The receiver incorporates movable components that enable dynamic adjustment of its orientation relative to the bone anchor. The tool engages with the receiver to allow controlled distraction and angular adjustments while maintaining structural integrity. Once the desired orientation is achieved, the components can be locked to maintain stability.
Data Source
AI summary
A bone fastener includes a first member having an inner surface defining an implant cavity and at least one mating element. A second member is disposed with the first member and is configured to penetrate tissue. A part is moveable relative to the second member and configured for disposal of an implant. The at least one mating element is engageable such that the first member is moveable relative to the second member to dispose the implant at a desired orientation relative to the second member. Implants, systems, constructs, instruments and methods are disclosed.