Air Flow Sensor Bypass With Gravity Secretion Collection
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Solution Overview
Problem
Existing air flow sensors in mechanical ventilation systems are prone to clogging and measurement inaccuracies due to secretions such as condensed water vapor, mucus, and organic material, requiring frequent cleaning and replacement, which is resource-intensive and potentially harmful.
Innovation Solution
A sensing and secretion bypass apparatus with an adapter chamber and elevated member to separate secretions from the air flow sensor, using gravity to collect secretions in a disposal housing, allowing accurate air flow measurement without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If air flow sensor is placed in the breathing circuit to measure air flow, then measurement function is achieved, but sensor clogging and measurement inaccuracies occur due to secretions
Solution Approach 1:
The breathing circuit is divided into separate pathways: a measurement pathway that directs clean air flow through the sensor, and a secretion collection pathway that channels secretions away from the sensor. This segmentation prevents secretions from reaching the sensor while maintaining measurement capability.
Solution Approach 2:
A baffle structure is introduced as an intermediary element between the breathing circuit and the air flow sensor. The baffle intercepts secretions in the air flow and redirects them into a collection chamber, preventing direct contact with the sensor while allowing continuous measurement of the cleaned air flow.
2Measurement precision
If air flow sensor is frequently cleaned and replaced to maintain accuracy, then measurement accuracy is preserved, but resource utilization decreases and operational complexity increases
Solution Approach 1:
The baffle structure performs preliminary action by intercepting and removing secretions from the air flow before they can reach and contaminate the sensor. This preventive measure eliminates the need for frequent cleaning and replacement operations.
Solution Approach 2:
The system implements self-service through automatic secretion separation and collection. The baffle and collection chamber work continuously to protect the sensor without requiring manual intervention for maintenance, thereby improving productivity and reducing operational complexity.
3Reliability
If secretion collection system is added to protect the sensor, then sensor reliability improves, but device complexity increases
Solution Approach 1:
The baffle structure is strategically positioned only at the critical interface where secretions would contact the sensor. This localized approach provides effective protection while minimizing the addition of complex components throughout the entire system.
Solution Approach 2:
The secretion collection chamber is merged with the existing sensor housing structure. The baffle and collection chamber form an integrated assembly that combines protection and collection functions within a single structural unit, reducing overall device complexity.
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
Prevents sensor clogging and maintains measurement accuracy by collecting secretions separately, reducing the need for frequent cleaning and replacement, thus optimizing resource utilization and safety.
Implementation Method 1
The disposal housing is in fluid communication with the chamber of the adapter and configured to collect the secretions received via the first end of the chamber
Data Source
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AI summary
An example sensing and secretion bypass apparatus and an associated method of manufacturing. The sensing and secretion bypass apparatus may include an air flow sensor. The sensing and secretion bypass apparatus may further include an adapter including a chamber having a first end configured to receive an air flow and a second end connected to the air flow sensor. The air flow may include secretions. The sensing and secretion bypass apparatus may further include an elevated member disposed within the chamber proximate the second end and configured to prevent the secretions from entering the air flow sensor. The sensing and secretion bypass apparatus may further include a disposal housing in fluid communication with the chamber of the adapter and configured to collect the secretions received via the first end of the chamber.