Cam Action Detachment for Tracheostomy Tube Loading Catheter
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Solution Overview
Problem
Current tracheostomy tube placement systems lack a secure and easily releasable connection between the loading dilator and the tracheostomy tube, leading to potential misplacement and increased risk of trauma during installation and removal.
Innovation Solution
A cam-action mechanism is introduced to gently detach the loading catheter from the tracheostomy tube, utilizing complementary sinusoidal or other shaped ridges to translate rotational motion into linear separation, ensuring a secure attachment during placement and easy release without excessive force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a positive connection system is introduced between the loading dilator and tracheostomy tube, then control over the tube during placement is improved, but the complexity of the device increases
Solution Approach 1:
The loading dilator is inserted through the lumen of the tracheostomy tube, with the dilator tip extending beyond the tube opening. This nested configuration allows the dilator to be held securely by the tube during insertion, providing positive connection and control without requiring complex external fastening mechanisms.
Solution Approach 2:
The connection mechanism utilizes the longitudinal dimension by having the dilator extend beyond the tube end, rather than requiring lateral or radial connection elements. This dimensional approach simplifies the connection system while maintaining secure attachment during the insertion process.
2Reliability
If a secure connection mechanism is used to attach the loading dilator to the tracheostomy tube, then control during placement is improved, but the ease of release deteriorates
Solution Approach 1:
The loading dilator is pre-configured to extend beyond the tracheostomy tube end, establishing the connection geometry before insertion begins. This preliminary arrangement ensures secure attachment during placement while allowing straightforward withdrawal by simply pulling the dilator out through the tube lumen without requiring complex release mechanisms.
3Ease of operation
If excessive force is applied to detach the loading dilator from the tracheostomy tube, then the ease of operation improves, but harmful factors increase
Solution Approach 1:
The nested configuration where the dilator passes through the tube lumen allows for gentle, controlled removal. The dilator can be withdrawn through the tube opening without requiring forceful detachment, thereby avoiding trauma to the tracheal stoma and surrounding tissues while maintaining ease of operation.
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 cam-action mechanism provides greater control and reduces trauma to the trachea and throat by allowing smooth, gentle disconnection of the loading catheter, minimizing tissue stress and recovery time.
Implementation Method 1
The loading catheter and tracheostomy tube have a cam-action mechanism that gently forces the two parts apart as they are rotated relative to each other. This 'cam action' disengagement allows for the removal of the loading catheter without subjecting the trachea or throat to undue pressure or forces
Data Source
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AI summary
There is provided a mechanism for gently detaching a loading catheter from a tracheostomy tube once the tube is placed in the trachea of a patient. After dilating the trachea, a loading catheter is inserted into a tracheostomy tube with which it desirably engages. Once the loading catheter and tracheostomy tube are attached to each other, the entire unit is passed through the stoma until the flange of the tracheostomy tube is in contact with the throat. The loading catheter may then be removed by rotating or twisting the loading catheter handle. The loading catheter and tracheostomy tube have a cam-action mechanism that gently forces the two parts apart as they are rotated relative to each other. This "cam action" disengagement allows for the removal of the loading catheter without subjecting the trachea or throat to undue pressure or forces that might cause trauma or increase recovery time. Other accessories like cannulas and obturators may attach and detach from the tracheostomy tube in a like manner.