T-Piece Resuscitation Circuit with Upstream Microbial Filter
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Solution Overview
Problem
Existing resuscitation circuits for infants and small children do not effectively filter microbes from exhaled air without increasing the dead space in the circuit, which is a concern during respiratory infections.
Innovation Solution
Incorporating an internal microbial filtration system upstream of the exhalation port in the T-piece circuit, which includes a filter assembly with a PEEP valve to manage gas flow and maintain minimal dead space, using a filter disc with high microbial filtration efficiency and adjustable PEEP to optimize gas flow resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an external filtration device is added downstream of the exhalation port, then microbial filtration is improved, but dead space within the circuit increases
Solution Approach 1:
The patent combines the filtration function with the existing exhalation port structure by integrating a filter into the T-piece circuit itself, rather than adding a separate external filtration device. This merging approach provides microbial filtration while minimizing additional dead space volume.
Solution Approach 2:
The filter is nested within the existing circuit structure, specifically positioned upstream of the exhalation port where it utilizes the available space within the T-piece assembly. This nesting approach allows filtration without significantly increasing the overall circuit volume or dead space.
2Object-affected harmful factors
If a filter is positioned upstream of the exhalation port, then microbial filtration is achieved, but gas flow resistance increases
Solution Approach 1:
The patent employs a porous filter material that allows gas molecules to pass through while trapping microbial particles. The porous structure provides adequate filtration efficiency while maintaining sufficient gas flow characteristics, balancing filtration performance with flow resistance.
Solution Approach 2:
The filter design optimizes parameters such as pore size, filter surface area, and material properties to achieve the right balance between microbial filtration efficiency and gas flow resistance, ensuring the filter does not excessively impede respiratory gas flow.
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
Effectively filters respiratory gases while minimizing the increase in dead space, ensuring efficient and safe exhalation of microbial-free air without obstructing gas flow, thus addressing the need for microbial contamination reduction during resuscitation.
Implementation Method 1
a filter positioned upstream of the exhalation port, said filter being configured such that respiratory gas exhaled into the mask or other patient airway device must pass through the filter before exiting through the exhalation port
Data Source
AI summary
Devices and methods for resuscitation of a patient wherein inspiratory gas is delivered through a T piece circuit having an exhalation port and a filter located upstream of the exhalation port to remove microbes from exhaled respiratory gas before the respiratory gas exits through the exhalation port.