Customizable Spinal Retractor with Angulated Blades
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Solution Overview
Problem
Conventional surgical retractors used in spinal surgery often require large incisions, leading to significant muscle trauma, back pain, and prolonged recovery times due to uniform tissue retraction, which can result in permanent scar formation and increased patient discomfort.
Innovation Solution
A surgical retractor with a customizable design featuring movable and angulated blade assemblies that allow for non-uniform tissue retraction, reducing the need for large incisions and minimizing tissue damage, while providing enhanced visibility and stability during procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If uniform tissue retraction is used to provide surgical exposure, then the surgical field is cleared and access is provided, but muscle trauma is significant and permanent scar formation occurs
Solution Approach 1:
The retractor blades are designed with different configurations at different locations - some blades have curved surfaces while others are flat, and they can be positioned at different angles. This allows each blade to interact with specific tissue types in a customized manner, providing effective retraction while minimizing trauma to individual muscle groups and reducing permanent scar formation.
Solution Approach 2:
The retractor incorporates adjustable and interchangeable blade assemblies that can be dynamically reconfigured during surgery. The blades can be positioned at various angles and depths, allowing the surgeon to adapt the retraction pattern to match the specific anatomical structures present, thereby achieving surgical exposure with minimal tissue damage.
2Ease of operation
If large incisions are made to accommodate uniform retraction, then surgical exposure is achieved, but recovery time is prolonged
Solution Approach 1:
The retractor uses locally optimized blade configurations that can be precisely positioned to retract only the necessary tissue in specific areas. This targeted approach creates adequate surgical exposure through smaller incisions, reducing the overall tissue disruption and enabling faster patient recovery compared to traditional large-incision approaches.
3Device complexity
If fixed retractor blades are used, then the structure is simple, but adaptability to different surgical needs is limited
Solution Approach 1:
The retractor is divided into modular components with interchangeable blade assemblies that can be independently selected and configured. Each blade assembly can be attached or removed based on surgical requirements, providing high adaptability without requiring a completely complex redesign of the entire device structure.
Solution Approach 2:
The retractor design incorporates universal mounting mechanisms and standardized interfaces that allow a single base structure to accommodate multiple types of blade assemblies. This enables the same retractor body to perform multiple retraction functions by simply changing the blade cartridges, achieving versatility without proportionally increasing overall device complexity.
Data Source
AI summary
The retractor system for use in spinal surgery and other types of surgical procedures that is a simple and efficient solution for minimally invasive access to thoracolumbar spine is disclosed. The fully customizable design allows the surgeon to independently angle the retractor blades and expand the retractor in both cephalad-caudal and medial-lateral directions. With an offering of a range of blade lengths, access can be tailored to the patient's anatomy. Auxiliary instruments such as the retractor inserter, universal hex driver and blade removal instrument allow quick and controlled access to the surgical site. The retractor system provides versatility and control ensuring minimal tissue trauma.