Adjustable Locking Surgical Retractor for Stable Multi-Blade Exposure
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Solution Overview
Problem
Current surgical retractors, such as the Balfour and Bookwalter systems, face limitations in providing adequate exposure for large or obese patients, requiring conversion to other systems, causing unintentional blade migration, and necessitating time-consuming repositioning, which is inefficient in emergency situations.
Innovation Solution
An adjustable retractor system with interconnecting frame segments and locking mechanisms, allowing for adjustable circumference and expansion, enabling secure attachment of multiple blades without the need for table fixation, ensuring sterile operation and rapid deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a standard Balfour retractor is used, then the device is simple and easy to use, but it provides inadequate abdominal exposure for large or obese patients
Solution Approach 1:
The retractor frame is designed with adjustable segments that can be extended or reconfigured to accommodate different patient sizes and abdominal circumferences, transforming the static structure into a dynamic, adaptable system
Solution Approach 2:
The frame is divided into multiple adjustable segments that can be independently positioned and locked, allowing customization of the retractor configuration to match various patient anatomies and surgical requirements
2Adaptability or versatility
If the Balfour retractor frame is extended for larger patients, then abdominal exposure is improved, but the frame becomes too long causing blade migration
Solution Approach 1:
The frame allows dynamic adjustment of segment positions during setup, enabling the creation of an optimized configuration that provides both adequate exposure and maintains stability by positioning segments at appropriate intervals
Solution Approach 2:
The frame segments and blades are pre-configured in specific positions before surgery to establish optimal geometry that prevents blade migration while ensuring adequate exposure, eliminating the need for intraoperative adjustments
3Adaptability or versatility
If multiple retractor blades are attached to the Balfour retractor, then retraction capability is improved, but the device complexity increases
Solution Approach 1:
The adjustable frame segments provide multiple attachment positions and orientations that can accommodate various blade configurations for different surgical needs, making the system universally applicable without requiring additional specialized components
4Adaptability or versatility
If the Bookwalter retractor is set up with multiple arms and rings, then retraction versatility is improved, but the setup time increases significantly
Solution Approach 1:
The system uses segmented frames that can be quickly assembled and configured, reducing setup time while maintaining versatility through modular components that can be rapidly positioned and locked into place
5Stability of the object's composition
If the Bookwalter ring is fixed in place, then attachment stability is improved, but repositioning requires time-consuming disassembly
Solution Approach 1:
The frame segments are designed with quick-adjust mechanisms that allow stable attachment during surgery but enable rapid repositioning when needed, combining stability with operational flexibility
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
The system provides maximum surgical exposure, maintains sterility, and allows rapid setup, reducing the need for repositioning and conversion, thus enhancing surgical efficiency and adaptability to varying patient sizes and wound types.
Implementation Method 1
The two retractor blades which provide lateral traction on the wound edges (or abdominal wall in abdominal operations) frequently unintentionally migrate to either the superior or inferior parts of the wound
Data Source
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AI summary
A surgical retractor assembly for providing surgical exposure. The surgical retractor assembly consists of two frame segments connected by adjustable ratchet mechanisms to form a retractor frame. The ratchet mechanisms can be attached to tissue retractor blades that provide exposure of the wound when expanded, without the requirement of a direct connection/attachment to an operating table or bed frame. The tissue retractor blades are attached in a manner that is adjustable and facilitates the ability of the overall surgical retractor assembly to be raised or lowered with respect to the patient. The retractor frame also allows attachments of additional retractor blades or other surgical retractor accessories for additional surgical exposure.