Multi-lumen Endotracheal Tube for Simultaneous Ventilation and Suction
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Solution Overview
Problem
Current treatments for acute respiratory distress syndrome (ARDS) and massive hemoptysis often require interrupting ventilation to suction blood, leading to hypoxia and exacerbating bleeding, and existing respiratory devices are not designed for simultaneous blood removal and lung expansion.
Innovation Solution
A respiratory apparatus with a barrier filter apparatus and multiport connector allows for closed suction systems, continuous ventilation, bronchoscopy, and control of the bleeding source, enabling selective ventilation of lung lobes and asynchronous ventilation to manage ARDS and hemoptysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the respiratory circuit is disconnected for blood suctioning, then blood can be removed from the airway, but oxygenation is reduced causing hypoxia
Solution Approach 1:
The endotracheal tube is divided into multiple lumens: a first lumen for ventilation and a second lumen for suction. This segmentation allows simultaneous blood removal and oxygen delivery without disconnecting the respiratory circuit, resolving the contradiction between blood evacuation and maintaining oxygenation.
Solution Approach 2:
The ventilation lumen remains continuously connected to the respiratory circuit while the suction lumen operates independently to remove blood. This continuity ensures uninterrupted oxygenation while enabling effective blood suctioning, eliminating the need to interrupt ventilation for suctioning.
2Reliability
If hyperventilation is attempted to recover from hypoxia, then oxygenation may improve, but the bleeding source is stretched increasing bleeding output
Solution Approach 1:
By maintaining continuous ventilation through the dedicated ventilation lumen while simultaneously suctioning blood through the separate suction lumen, the system achieves oxygenation recovery without the need for hyperventilation maneuvers that would stretch and exacerbate the bleeding source.
Solution Approach 2:
The endotracheal tube incorporates a compliant structure with multiple lumens that can accommodate blood suctioning and ventilation simultaneously without rigid stretching, thereby avoiding mechanical stimulation of the bleeding source while maintaining effective oxygenation.
3Object-generated harmful factors
If positive end expiratory pressure (PEEP) is applied to tamponade bleeding, then bleeding may be reduced, but the circuit must be disconnected frequently for blood suctioning reducing effectiveness
Solution Approach 1:
The endotracheal tube is segmented into separate ventilation and suction lumens, allowing PEEP to be maintained in the ventilation lumen for bleeding control while the suction lumen independently removes blood without requiring circuit disconnection, thus maintaining both bleeding control and suctioning effectiveness simultaneously.
Solution Approach 2:
The independent suction lumen enables continuous blood removal while the ventilation lumen maintains continuous PEEP application, allowing both bleeding control and effective blood suctioning to occur simultaneously without interrupting either function.
4Reliability
If a closed suction system is used to remove blood with minimal decruitment, then alveoli are better preserved, but existing devices are not designed for simultaneous blood removal and lung expansion
Solution Approach 1:
The endotracheal tube is designed with segmented lumens: a ventilation lumen for lung expansion and a suction lumen for blood removal. This segmentation enables closed suctioning that preserves alveoli while simultaneously allowing lung expansion, overcoming the limitation of existing single-lumen devices that cannot perform both functions.
Solution Approach 2:
The multi-lumen endotracheal tube serves multiple functions simultaneously: ventilation, suctioning, and maintaining PEEP, all through a single device. This multi-functionality eliminates the need for separate devices or circuit disconnections, achieving alveoli preservation with minimal device complexity increase.
Data Source
AI summary
Embodiments are directed to an endotracheal intubation system that provides for differential ventilation of lungs and lung lobes. Certain aspects are directed to an assembled device having three lumens: (1) a tracheal lumen that provides for ventilation of the upper lobes of the lung, (2) a first lobular lumen that provides for ventilation of a first lower lobe of the lung, and (3) a second lobular lumen that provides for ventilation of a second lower lobe of the lung.