Variable Flexibility Tracheostomy Tube Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current tracheostomy tube insertion procedures are time-consuming and require careful handling to avoid tube collapse, which can complicate the placement and increase the risk of ventilator-acquired pneumonia.
Innovation Solution
A tracheostomy tube with variable flexibility, where the proximal portion is less flexible to withstand insertion force and the distal portion is more flexible to minimize contact with the trachea, combined with a loading catheter for easier insertion and a low-pressure, thin cuff for secure sealing, addresses the challenges of tube collapse and placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the tracheostomy tube is made rigid to withstand insertion force, then the tube can resist collapse during insertion, but the tube may contact and damage the posterior wall of the trachea
Solution Approach 1:
The tube incorporates different flexibility characteristics at different locations: the proximal portion (first portion) is made less flexible to withstand insertion forces, while the distal portion (second portion) is made more flexible to minimize contact with the tracheal wall. This local differentiation of mechanical properties allows the tube to simultaneously resist collapse during insertion and reduce trauma to the trachea during placement.
2Object-affected harmful factors
If the tracheostomy tube is made flexible to minimize contact with the trachea, then the tube causes less trauma to the tracheal wall, but the tube may collapse during insertion
Solution Approach 1:
The tube incorporates different flexibility characteristics at different locations: the proximal portion (first portion) is made less flexible to withstand insertion forces, while the distal portion (second portion) is made more flexible to minimize contact with the tracheal wall. This local differentiation of mechanical properties allows the tube to simultaneously resist collapse during insertion and reduce trauma to the trachea during placement.
3Reliability
If careful handling is used to avoid tube collapse, then the tube placement safety is improved, but the procedure time increases
Solution Approach 1:
The tube's flexibility parameter is changed along its length, creating a gradient from less flexible at the proximal end to more flexible at the distal end. This parameter variation allows the tube to be more resistant to collapse during insertion while requiring less careful handling overall, thereby reducing procedure time while maintaining safety.
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 tracheostomy tube design facilitates quicker and safer placement, reducing the risk of tube collapse and potentially lowering the incidence of ventilator-acquired pneumonia by allowing for more efficient and secure ventilation.
Implementation Method 1
The tube has variable flexibility. The tube is flexible at its distal portion... It is less flexible at its proximal portion where the greatest amount of force is generally applied during a tracheostomy procedure
Implementation Method 2
The tube is flexible at its distal portion so as to pose less of a problem for the posterior wall of the trachea should it contact it
Data Source
Figure 1
Figure 2
Figure 3
AI summary
There is provided a reinforced (100) tracheostomy tube (26). Various mechanisms may be used to reinforce the tube, which is reinforced on the upper portion which extends as much as two thirds of the distance from the flange near the proximal end to the distal tip. The tube extends at an angle of from 85 to 120 degrees from the flange to the distal tip and has a length between about 70 and 100 mm.