Ventilation Speaking Tube Segmentation
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Solution Overview
Problem
Current tracheal cannulas used for ventilation in clinical settings either allow excessive secretion and pathogens to enter the lungs or require slow and unpleasant methods to enable speaking, compromising patient comfort and safety.
Innovation Solution
A system that includes a ventilation apparatus and patient interface with a controllable respiratory gas source, capable of identifying respiratory phases and providing speaking gas temporarily through a speaking tube, allowing patients to speak while maintaining respiratory gas flow through a separate tube, with features like a standby mode and intelligent gas flow control to prevent lung penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tracheal cannula is blocked via a balloon to prevent secretion and pathogen penetration, then patient safety is improved, but the ability to speak is lost
Solution Approach 1:
The tracheal cannula is divided into two separate tubes: a respiratory tube for gas exchange and a speaking tube for speech. The respiratory tube maintains the blocking balloon for protection, while the speaking tube provides an open pathway for speech, thus resolving the contradiction between safety and speech capability
Solution Approach 2:
A separate speaking tube acts as an intermediary pathway that allows speech without compromising the protective function of the blocked respiratory tube. This intermediary structure enables speech while maintaining the safety barrier against secretions and pathogens
2Adaptability or versatility
If the balloon is emptied to enable speaking, then the ability to speak is restored, but patient comfort deteriorates due to slow and unpleasant process
Solution Approach 1:
By segmenting the cannula into separate respiratory and speaking tubes, the system eliminates the need to deflate the balloon for speech. The speaking tube remains open independently, allowing immediate speech activation without the slow and unpleasant deflation process
Solution Approach 2:
The speaking tube is pre-configured as an open pathway from the beginning,无需 subsequent deflation action. This preliminary setup allows speech to be activated immediately when needed, avoiding the slow and unpleasant deflation process
3Adaptability or versatility
If a separate speaking tube is added to maintain balloon blockage, then speech capability is improved, but device complexity increases
Solution Approach 1:
The speaking tube and respiratory tube are merged into a single integrated cannula assembly with a common external structure and attachment mechanism. This combining approach adds speech capability while minimizing overall device complexity through shared components
4Adaptability or versatility
If speaking gas is delivered continuously, then speech is enabled, but respiratory function may be compromised
Solution Approach 1:
The speaking gas delivery is activated periodically only during patient expiration phases, not continuously. This periodic activation allows speech when the patient is exhaling while maintaining respiratory function during inspiration, resolving the contradiction between speech enablement and respiratory reliability
Data Source
AI summary
System for assisting a patient in speaking, comprising at least one ventilation apparatus and a patient interface, the ventilation apparatus comprising at least one controllable respiratory gas source and being designed to identify two or more respiratory phases, at least inspiration and expiration, of the patient, and the patient interface having at least one speaking tube and a respiratory tube and being configured to conduct speaking gas to the patient via the speaking tube and to conduct respiratory gas to and/or from the patient via the respiratory tube. The system is configured to provide speaking gas to the patient at least temporarily in a speaking mode in order to enable speaking.