Irrigating Intraluminal Suction Inner Cannula for Tracheostomy
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Solution Overview
Problem
Current tracheostomy tubes lack effective methods for safely rinsing and suctioning the inner lumen, leading to clogging, airway loss, infection risk, and patient discomfort, with existing systems requiring frequent manual intervention and exposing healthcare workers to pathogens.
Innovation Solution
An irrigating intraluminal suction inner cannula system with separate chambers for suction and irrigation, allowing for safe, automated, and controlled suction and rinsing at multiple locations within the tracheostomy tube, reducing the need for manual catheter-based methods and minimizing exposure to aerosols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual catheter-based intraluminal suctioning is performed frequently, then secretions are cleared from the tracheostomy tube, but patient discomfort increases and healthcare workers are exposed to pathogens
Solution Approach 1:
The system enables self-service through the patient's own respiratory efforts. The patient's negative intrathoracic pressure during inhalation automatically drives secretion evacuation through the suction catheter, eliminating the need for external manual intervention and reducing healthcare worker exposure to pathogens
Solution Approach 2:
The manual mechanical suctioning process is replaced by the patient's physiological respiratory mechanics. The natural negative pressure generated during inhalation substitutes for external suction devices and manual catheter manipulation, reducing patient discomfort and procedural complexity
2Productivity
If suction catheter is applied deep within the airway, then secretions are effectively removed, but airway trauma and infection risk increase
Solution Approach 1:
The system incorporates feedback through the patient's respiratory cycle detection. The suction is automatically activated during inhalation when negative intrathoracic pressure is present, and deactivated during exhalation, preventing airway trauma while maintaining effective secretion clearance
Solution Approach 2:
The suction application is made dynamic by coupling it to the patient's respiratory cycle. The suction pressure and activation timing vary automatically with the patient's breathing pattern, allowing deep effective suction during inhalation while preventing trauma during exhalation
3Ease of operation
If patient cannot time suction application during breath cycle, then suctioning can be performed continuously, but patient experiences breathlessness and cough reflex
Solution Approach 1:
The patient's own respiratory cycle serves as the timing mechanism for suction application. The system automatically detects and responds to the patient's inhalation-exhalation pattern, eliminating the need for patient timing control while preventing breathlessness and cough reflex
Solution Approach 2:
The system uses feedback from the patient's respiratory mechanics to automatically time suction application. Negative intrathoracic pressure during inhalation triggers suction activation, while positive pressure during exhalation deactivates it, preventing harmful effects without requiring patient awareness or control
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 effectively thins and clears secretions, reduces infection risk, and minimizes exposure to pathogens by providing a closed system for suction and irrigation, enhancing patient comfort and reducing the burden on healthcare resources.
Implementation Method 1
suction-powered system that may be used for suction alone or a combination of rinse and intraluminal suction
Implementation Method 2
combination of rinse and intraluminal suction for tracheostomy tubes
Data Source
Figure 1A~1E
Figure 2A~2C
Figure 3
AI summary
An irrigating intraluminal suction inner cannula system for a tracheostomy tube may be a suction-powered system that may be used for suction alone or a combination of rinse and intraluminal suction for tracheostomy tubes in place of conventional catheter-based intraluminal suction. An inner cannula includes chambers, or regions, and holes that facilitate intraluminal suction and cleaning at multiple locations within the tracheostomy tube. It may be applied/actuated by a patient, healthcare worker, caretaker, or via an electronic system either on-demand or on regular or triggered intervals, in either inpatient/hospital or outpatient/ambulatory care setting.