Adjustable Triple Head Thyroid Retractor
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Solution Overview
Problem
Current thyroid surgery retractors require multiple tools to achieve adequate exposure of the surgical field, which can complicate the adjustment and precision of retraction, particularly when using retractors with three heads or blades.
Innovation Solution
A surgical retraction device with three hinged arms, each equipped with a ratcheting mechanism and finger grips, allowing for precise control and adjustment of the retraction hooks to facilitate exposure of the surgical site using a single tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate retractors are used to achieve adequate surgical field exposure, then the retraction coverage is sufficient, but the device complexity and ease of operation deteriorate due to needing to manage multiple tools
Solution Approach 1:
The patent combines three separate retractor blades into a single integrated device with a common handle and shaft. The three blades are hinged to the common shaft, allowing them to be adjusted independently while being part of one unified tool. This merging eliminates the need to manage multiple separate retractors during surgery, reducing device complexity while maintaining adequate retraction coverage of the surgical field.
2Adaptability or versatility
If three separate retractors are used, then adequate retraction is achieved, but the adjustment precision and time efficiency worsen due to managing multiple tools
Solution Approach 1:
By integrating three adjustable blades into one device with a common handle, the surgeon can adjust all three blades simultaneously or independently without the time loss associated with managing multiple separate tools. The hinged connection allows each blade to be positioned and locked independently while being part of a single instrument.
3Device complexity
If a fixed triple-head retractor is used, then the structure is simple, but the ease of operation worsens due to inability to adjust arm distances
Solution Approach 1:
The patent transforms the fixed structure into a dynamic, adjustable one by introducing hinges at the connection points between the blades and the common shaft. These hinges allow the blades to be positioned at different angles and distances from each other. The ratchet mechanisms enable the surgeon to adjust and lock the blade positions during surgery, providing adaptability while maintaining structural integrity.
4Adaptability or versatility
If multiple separate retractors are used, then adequate surgical exposure is achieved, but the ease of operation deteriorates due to complicated adjustment procedures
Solution Approach 1:
The integration of three adjustable blades into one device with a common handle and shaft simplifies the adjustment procedure. The surgeon can manipulate all three blades from a single handle position, and the hinged connections allow for smooth, coordinated adjustment. This unified design eliminates the complexity of managing multiple separate tools while maintaining adequate surgical exposure.
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 efficient and precise retraction of tissue with the ability to adjust the distance between retraction ends, reducing the need for multiple tools and enhancing surgical exposure during thyroid surgery and potentially other surgical procedures.
Implementation Method 1
Each arm comprises a rod portion and terminates with a retraction hook. The arms have a ratcheting function, wherein linear movement of the plurality of arms effects retraction of a patient's tissue
Data Source
AI summary
A medical retraction device is constructed as a plurality of at least three arms hinged together at a hinge point, and extensions to grip a patient's tissue for retraction. Each arm has a rod portion and terminates with a retraction hook. The arms have a ratcheting function, in which linear movement of the arms effects retraction of a patient's tissue and provides for exposure of a surgical site. Finger grips extend from at least a subset of the plurality of arms and at least one of the finger grips controls the ratcheting function for that arm. In operation, the operator makes an incision and inserts retraction device so that the rod end portions extend into the incision. The operator then adjusts the arms by controlling the ratcheting.