Adjustable Spinal Retractor Blades for Surgical Site Access
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Solution Overview
Problem
Existing retractor tools lack flexibility and adjustability, making it difficult to access and manipulate surgical sites effectively, particularly in complex spinal procedures.
Innovation Solution
A retractor tool with adjustable blades that can telescope, pivot, and angle, featuring a drive mechanism for length and distance adjustment, and a floating head for in situ flexibility, allowing for improved access and manipulation of surgical sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed-length blades are used, then the structure is simple, but the adaptability to different surgical sites is poor
Solution Approach 1:
The blade length is made dynamically adjustable through a telescoping mechanism that allows the blade to extend and retract. This dynamic adjustment capability enables the same retractor tool to adapt to different surgical site requirements without requiring multiple fixed-length blades, thereby improving versatility while managing structural complexity through integrated design.
Solution Approach 2:
The retractor tool is designed with universal adaptability through adjustable blade length and angle mechanisms, allowing a single tool to perform multiple functions across different surgical scenarios. The base arm with adjustable blades can accommodate various surgical sites, eliminating the need for multiple specialized tools and reducing overall device complexity.
2Ease of operation
If multiple fixed-length blades are used, then each blade is optimized for specific access, but the quantity of tools required increases
Solution Approach 1:
A single retractor tool with adjustable blade length and angle mechanisms can replace multiple fixed-length blades, each optimized for specific access requirements. The universal design allows one tool to accommodate various surgical site configurations, reducing the quantity of tools needed while maintaining ease of operation through integrated adjustment capabilities.
Solution Approach 2:
The patent combines multiple blade functions (different lengths and angles) into a single integrated retractor tool. The base arm structure merges the functionality of multiple separate blades by incorporating adjustable mechanisms that allow one blade to perform the roles previously requiring multiple specialized tools, thereby reducing tool quantity while preserving operational effectiveness.
3Adaptability or versatility
If blades are made adjustable in length, then versatility improves, but the device complexity increases
Solution Approach 1:
The telescoping mechanism employs a nested structure where the blade segments are arranged concentrically, with inner segments fitting within outer segments. This nesting approach enables compact storage when the blade is retracted and allows smooth extension to desired lengths, achieving versatility while minimizing the space and complexity required for the adjustment mechanism.
Solution Approach 2:
The blade length adjustment is implemented through a dynamic telescoping mechanism that allows controlled extension and retraction. The mechanical design incorporates guiding surfaces and engagement features that enable smooth, precise length changes while maintaining structural integrity, thereby achieving adaptability without excessive complexity in the moving components.
Data Source
AI summary
A retractor tool apparatus and method of manipulation are described. The retractor tool may include one or more blades. The one or more blades may be cranial/caudal blades. The one or more blades may be a medial blade. One or more portions of the retractor tool may be adjustable.