Spine Tissue Retractor Adaptor for Stable Independent Blade Positioning
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Solution Overview
Problem
Existing tissue retractors for surgical procedures, particularly in spine surgery, lack efficient mechanisms for adjusting and securing blades to provide optimal tissue retraction and stability during various surgical configurations.
Innovation Solution
A tissue retractor with independently operable retracting arms and blades, featuring rack and pinion mechanisms, lever mechanisms, and anti-backoff mechanisms, along with a retractor adaptor that securely attaches to a holder using an annular row of teeth and a latch, allowing for versatile and stable blade positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tissue retractors are used without independent blade positioning mechanisms, then the device structure remains simple, but the ability to provide optimal tissue retraction and stability is compromised
Solution Approach 1:
The retractor is divided into independent modular components including separate retracting arms (left, right, center) that can be independently positioned and secured. Each arm operates autonomously with its own positioning mechanism, allowing stable tissue retraction without requiring complex integrated systems.
Solution Approach 2:
The retractor incorporates adjustable and reconfigurable components that allow dynamic adaptation during surgical procedures. The independent arms can be positioned at different angles and depths, and the adaptor system enables configuration changes to match various surgical site requirements, providing stability without fixed rigid structures.
2Productivity
If manual handling and adjustment of blades is required, then the device structure remains simple, but surgical efficiency and precision are reduced
Solution Approach 1:
The retractor system incorporates self-retaining mechanisms where the blades and arms automatically maintain their positioned state through inherent mechanical features such as friction locks and geometric interlocking. This eliminates the need for continuous manual adjustment while maintaining precise positioning, thereby improving surgical efficiency without requiring complex active control systems.
3Reliability
If the retractor adaptor uses a simple attachment mechanism, then the device structure remains simple, but the security and stability of attachment to the holder is compromised
Solution Approach 1:
The adaptor assembly incorporates nested mechanical features including an adaptor body that receives and secures the retractor arms, with integrated locking mechanisms that nest within the overall structure. The annular row of teeth and latch mechanism are contained within the adaptor body, providing secure attachment without requiring external complex components.
4Measurement precision
If the retracting arms are not independently operable, then the device structure remains simple, but the precision of tissue retraction and access is reduced
Solution Approach 1:
The retractor system is segmented into independently operable arms (left, right, and center retracting arms) each with its own positioning controls. This segmentation allows precise independent adjustment of each blade to match the specific anatomical requirements of the surgical site, achieving high positioning precision without requiring complex integrated control systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise and stable tissue retraction with reduced wobbling, facilitating efficient surgical access and reducing manual handling during surgical procedures.
Implementation Method 1
featuring rack and pinion mechanisms
Implementation Method 2
an annular row of teeth at the distal end of the adaptor body configured to mesh with an annular row of teeth of an adaptor mount
Data Source
AI summary
A retractor for spine surgery includes a body. Left, right, and center retracting arms are coupled to the body. Left, right, and center blades are operatively coupled to proximal ends of the respective retracting arms. A retractor adaptor is configured to couple the retractor to a mount.