Modular Pedicle-Based Distractor and Medial Retraction System
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Solution Overview
Problem
Current surgical methods for addressing spinal irregularities, such as collapsed discs, require improved distractors/retractors that can effectively perform pedicle-based distraction and soft tissue retraction.
Innovation Solution
A modular pedicle-based distraction assembly that includes interchangeable distractor elements like headless posts, pre-assembled posts, or minimally invasive towers, which are configured to widen the collapsed disc space and serve as a landmark for the surgical safe-zone, while also allowing for tissue retraction using a medial retractor blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional distractors and retractors are used separately, then each device can perform its specific function, but the device complexity and procedural time increase
Solution Approach 1:
The patent combines a distractor device and a retractor device into a single integrated surgical system. The distractor component applies distraction force to the disc space through pedicle screws, while the retractor component simultaneously provides soft tissue retraction through adjustable blades, eliminating the need for separate devices and streamlining the surgical workflow
Solution Approach 2:
The integrated surgical device performs multiple functions: it distracts the disc space to restore height and create working space, retracts soft tissue to improve visualization and access, and provides structural support. This multi-functional design allows a single device to replace what would traditionally require multiple separate instruments
2Length of moving object
If a collapsed disc space needs to be restored, then disc height must be increased, but surrounding soft tissue may be compressed or damaged
Solution Approach 1:
The surgical device is segmented into functionally independent components: the distractor element that applies vertical distraction force to increase disc space height, and the retractor blades that can be independently positioned to protect and retract soft tissue. This segmentation allows each component to address its specific function without interfering with or causing harm to the other
Solution Approach 2:
The retractor blades act as an intermediary protective element between the distractor and the soft tissue. As the distractor increases disc space height, the retractor blades simultaneously hold back and protect the surrounding soft tissue, preventing compression or damage that would otherwise occur during the distraction process
Data Source
AI summary
Distractor and retractor systems and methods of using the same. A pedicle-based distractor assembly may include a base supporting a distraction rack, a pair of moveable arms coupled to the distraction rack, a connector at the end of each arm, each connector having a through-opening, and a pair of distractor elements each configured to attach to a pedicle screw. Each distractor element may be positioned through the through-opening in the respective connector. The distractor elements are modular such that different types of distractor elements, such as headless posts, pre-assembled posts, or minimally invasive towers, are interchangeable with the connectors. The assembly may also include a retractor assembly with a medial retractor blade for retracting soft tissue.