Cricothyrotomy Apparatus Blade Guide Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cricothyrotomy kits lack sufficient safety structures to prevent common errors such as misidentification of anatomical landmarks, posterior tracheal perforation, and mediolateral misalignment, especially in high-stress scenarios like battlefield emergencies.
Innovation Solution
The incision and dilation apparatus features a blade member, a dilator, and a frame with additional safety structures, including a blade guide that retains the blade in perpendicular directions and allows linear movement, and a second blade guide on the dilator for predictable blade movement, along with a removable clip to restrict movement and enhance safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a basic cricothyrotomy kit with minimal tools is used, then the device complexity is reduced and ease of operation is improved, but safety and reliability deteriorate due to lack of protection against common errors
Solution Approach 1:
The device is divided into functionally independent components: a blade member for incision, a dilator for widening the opening, and a frame for positioning and alignment. Each component has a specific function, allowing the system to provide comprehensive safety features while maintaining operational simplicity through modular design
Solution Approach 2:
The frame acts as an intermediary structure that positions the blade and dilator relative to anatomical landmarks. It provides a stable reference framework that guides the user through the procedure, reducing the risk of misidentification of landmarks and ensuring proper alignment without requiring advanced user expertise
2Device complexity
If a hook device is used to spread the incision site, then the procedure can be performed with basic tools, but the ease of operation deteriorates due to confusion and stress during high-stress scenarios
Solution Approach 1:
The device separates the incision function (blade member) from the dilation function (dilator), with each component having a dedicated, intuitive structure. The blade member includes a handle and blade assembly that is distinct from the dilator, making the procedural steps clearer and reducing user confusion during high-stress situations
Solution Approach 2:
The frame is pre-configured with anatomical landmark references and positioning features before the procedure begins. This preliminary setup establishes the correct orientation and alignment in advance, eliminating the need for users to recall and reconstruct procedural steps under stress
3Productivity
If a sharp metal trocar/obturator is used for puncture, then the speed of the procedure is improved, but the reliability deteriorates due to risk of posterior tracheal perforation and patient movement during insertion
Solution Approach 1:
The device separates the puncture function (blade member with sharp blade) from the dilation function (dilator), allowing the blade to perform rapid incision while the dilator subsequently provides controlled expansion. This segmentation enables speed while maintaining safety through the dedicated dilation step that prevents perforation
Solution Approach 2:
The frame serves as an intermediary positioning device that stabilizes the blade and dilator relative to the patient's anatomy during the procedure. It provides a fixed reference framework that prevents patient movement-related errors and ensures proper alignment, thereby maintaining reliability even during rapid insertion
4Ease of operation
If the blade member is freely movable, then the ease of operation is improved, but the reliability deteriorates due to unintended blade movement and misalignment
Solution Approach 1:
The blade member is designed with dynamic positioning capabilities within the frame structure. It can be freely manipulated by the user for precise positioning, yet the frame provides continuous geometric constraints that maintain proper alignment. The blade moves within a controlled range defined by the frame's anatomical references
Solution Approach 2:
The frame acts as an intermediary constraint system that allows blade movement while preventing misalignment. It provides a stable reference framework with anatomical landmark references that guide the blade through the correct trajectory, enabling ease of operation without compromising alignment precision
Data Source
AI summary
An incision and dilation apparatus performs an incision in and dilates select tissue of a mammal. The apparatus includes a blade member, a dilator, and a frame. The blade member includes a blade having a cutting edge. The dilator is configured to dilate the select tissue. The frame includes a blade guide, and is adapted to position the blade guide over the select tissue. The blade guide retains the blade member in first and second perpendicular directions and allows substantially linear movement of the blade member in a third direction. The frame also supports the dilator and allows movement of the dilator in the third direction. The dilator includes a second blade guide that retains the blade member in first and second perpendicular directions and allow substantially linear movement of the blade member relative to the dilator in a third direction.