Modular Pedicle Distraction With Integrated Soft Tissue Retraction
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Solution Overview
Problem
Existing surgical procedures for spinal irregularities lack effective pedicle-based distraction and soft tissue retraction systems that provide precise anatomical landmarking and minimize tissue disruption.
Innovation Solution
A modular pedicle-based distraction assembly with interchangeable distractor elements, such as headless posts, pre-assembled posts, or MIS towers, that interface with pedicle screws for vertebral distraction, combined with a medial retraction blade for soft tissue retraction, providing precise surgical access and visualization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional distractors and retractors are used separately, then surgical access can be achieved, but the procedure complexity increases and tissue disruption is minimized only partially
Solution Approach 1:
The patent combines the distractor and retractor into a single integrated device where the retractor blade is directly coupled to the distractor mechanism. This allows both distraction of the disc space and retraction of soft tissue to be performed simultaneously through one device, reducing procedural complexity while maintaining effective surgical access.
Solution Approach 2:
The integrated device performs multiple functions: it distracts the disc space to restore vertebral alignment and simultaneously retracts soft tissue to provide surgical access. This multi-functionality eliminates the need for separate devices and procedures, simplifying the overall surgical process.
2Measurement precision
If pedicle-based distraction is implemented, then anatomical landmarking precision improves, but the device structure becomes more complex
Solution Approach 1:
The device is divided into distinct functional modules: a distractor component that interfaces with pedicle screws for precise anatomical landmarking, and a retractor blade component for soft tissue retraction. This segmentation allows each component to be optimized for its specific function while maintaining overall system manageability.
Solution Approach 2:
The retractor blade acts as an intermediary element that connects the distraction mechanism to the soft tissue. It is coupled to the distractor through a controlled connection that allows the blade to be positioned and maintained independently while benefiting from the stable anatomical reference provided by the pedicle-based distraction system.
3Ease of operation
If retractor blade is coupled to distraction assembly, then soft tissue retraction is improved, but the risk of tissue trauma increases
Solution Approach 1:
The retractor blade is designed with dynamic positioning capabilities, allowing it to be adjusted and repositioned during the surgical procedure. The coupling mechanism enables controlled movement and adaptation to tissue characteristics, reducing the risk of trauma while maintaining effective retraction.
Solution Approach 2:
The device allows for adjustment of retraction parameters such as blade position, angle, and force applied. These parameters can be modified during surgery to optimize tissue retraction while minimizing trauma, providing flexibility in response to varying anatomical conditions.
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. The medial retractor blade may have one or more translating components at a distal for retracting soft tissue.