Ventilation Adapter Integrating Gas Sensor and Suction Port
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Solution Overview
Problem
Existing ventilation systems face challenges in accurately measuring end tidal CO2 due to mechanical dead space and contamination from suction catheters, particularly in neonatal patients, where small tidal volumes and sensitive skin complicate gas measurement and suction processes.
Innovation Solution
An adapter integrating a gas concentration sensor, suction catheter system, and intubation tubing reduces mechanical dead space by positioning the sensor close to the suction catheter, minimizing contamination and increasing accuracy, while a heat guard protects sensitive skin from sensor heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a gas concentration sensor is positioned close to the suction catheter to reduce mechanical dead space, then measurement precision of end tidal CO2 is improved, but contamination from the suction catheter increases
Solution Approach 1:
The adapter is divided into distinct functional regions: a sensor receiving region with integrated gas concentration sensor, a suction catheter interface region, and an intubation tube interface region. This segmentation allows each component to be optimized independently while maintaining close proximity for reduced dead space, resolving the contradiction between measurement accuracy and contamination risk.
Solution Approach 2:
The adapter acts as an intermediary device between the suction catheter system and the gas concentration sensor. It provides a physical barrier and separate fluid pathways that prevent direct contact between suction catheter contaminants and the sensor, while still allowing the sensor to measure gas concentrations accurately in the respiratory pathway.
2Productivity
If the gas concentration sensor is integrated directly into the adapter junction, then mechanical dead space is reduced improving ventilation efficiency, but the sensor heat may damage sensitive patient skin
Solution Approach 1:
The gas concentration sensor is extracted from direct contact with the patient's respiratory pathway and positioned within the adapter junction away from the skin interface. The sensor measures gas concentrations through the adapter's gas flow paths without being in direct contact with the patient, eliminating the heat damage risk while maintaining ventilation efficiency.
3Ease of operation
If multiple components (sensor, suction catheter, intubation tube) are integrated into a single adapter, then device complexity is reduced and ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The adapter is designed as a universal multi-functional component that interfaces with standard ventilator pieces, suction catheter systems, and intubation tubes. By adopting standard interface configurations for each connection type, the adapter achieves ease of operation with commonly used medical equipment while managing manufacturing precision through standardized design patterns.
Data Source
AI summary
An adapter is provided for a ventilation system. In one example, the adapter comprises a junction with an integrated region for directly releasably receiving a gas concentration sensor, a first port fluidly coupled to the junction configured to interface with a ventilator piece, a second port configured to interface with a suction catheter system, and a third port configured to interface with an intubation tube.