Interspinous-Interlaminar Implant With Adjustable Distraction
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Solution Overview
Problem
Existing spinal stabilization systems are invasive and lack an adjustable level of distraction between vertebrae, making them difficult to apply to multiple levels without interference.
Innovation Solution
A system comprising an implant with superior and inferior wings and a clamp that engages these wings to maintain spacing between spinous processes and laminae, allowing adjustable distraction and secure attachment using a fastener and locating tabs to prevent disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional intervertebral and interspinous-interlaminar implants are used to limit compression, then spinal stability is improved, but the treatment becomes more invasive and recovery time increases
Solution Approach 1:
The implant is divided into separate components: a body portion and a wing assembly. The wing assembly can be independently positioned and secured to the spinous process, allowing for less invasive insertion while maintaining spinal stability. This segmentation enables the implant to be installed through smaller incisions with reduced tissue disruption.
2Reliability
If traditional implants are used to stabilize vertebrae, then compression relief is achieved, but the level of distraction cannot be adjusted
Solution Approach 1:
The wing assembly is designed with movable wings that can be positioned at different distances from the implant body. The wings are secured to the spinous process at a specific position, allowing the distraction level to be adjusted during surgery based on patient needs. This dynamic positioning capability enables customized distraction levels while maintaining compression relief.
3Reliability
If implants are applied to multiple adjacent vertebral levels, then stabilization coverage is improved, but the implants interfere with each other
Solution Approach 1:
The wings extend laterally from the implant body in a direction perpendicular to the vertical stacking direction of multiple implants. This lateral extension in another dimension allows adjacent level implants to be positioned without interfering with each other, enabling comprehensive stabilization coverage across multiple vertebral levels while avoiding mechanical interference between implants.
Data Source
AI summary
A system may be configured to maintain spacing between a superior spinous process and a superior lamina, and an inferior spinous process and an inferior lamina, of adjacent vertebrae of a spine. The system may include an implant that includes two superior wings that extend superiorly from a proximal superior surface such that, in an implanted position, the superior spinous process may be engaged therebetween. The implant may also include two inferior wings that extend inferiorly from a proximal inferior surface such that, in the implanted position, the inferior spinous process may be engaged therebetween. The system may include a clamp that includes two superior arms configured to engage the two superior wings to prevent disengagement of the two superior wings from the superior spinous process and two inferior arms configured to engage the two inferior wings to prevent disengagement of the two inferior wings from the inferior spinous process.