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Publication Number
US-12414711-B2
Publication Date
2025-09-16
Expiration Date
Abstract
A gas sampling line having a channel for conducting respiratory gases from a patient respiratory interlace to a gas monitor, the gas sampling line comprising, i.a., a gas sampling tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide. Use of a tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide, for sampling of respiratory gases; and a method for sampling of respiratory gases, the method comprising conducting respiratory gases through such a tube. A gas analysis system for analysing respiratory gases, comprising a gas sampling line as defined above and a gas monitor connectable to the gas sampling line.
Core Innovation
The disclosed invention relates to a respiratory gas sampling line having a channel for conducting respiratory gases and a gas sampling tube. At least a portion of the gas sampling tube comprises a polyether block amide material, where the polyether segments are polyethyleneoxide, and the arrangement enables moisture or condensed water to permeate through the tube while the respiratory gases pass through essentially undistorted.
The disclosed line further includes a hydrophilic member disposed within the gas sampling tube surrounding at least a portion of the channel. Moisture or condensed water permeates through the polyether block amide material, and a dried gas sample is provided while respiratory gas components remain essentially undistorted, supporting accurate monitoring for respiratory gas analysis.
An optional drying assembly includes a second PEBA casing with a hydrophilic member and a hydrophobic member across the channel. The disclosure states that contaminants are retained by the hydrophobic member and that bacteria and body excretions are retained while moisture removal is enabled within the gas analysis system.
Claims Coverage
The partial disclosure provides one independent claim. It contains a set of inventive structural features for a gas sampling line for respiratory gases, including a polyether block amide tube portion and an internal hydrophilic member, plus connectors for coupling to both patient and gas monitor interfaces.
Gas sampling line with polyether block amide tube portion
A gas sampling line having a channel for conducting respiratory gases, including a gas sampling tube wherein at least a portion comprises a polyether block amide material.
Hydrophilic member surrounding the channel within the tube
A hydrophilic member disposed within the gas sampling tube surrounding at least a portion of the channel.
Patient respiratory interface connector and gas monitor connector
A patient respiratory interface connector adapted to couple the gas sampling line to a patient respiratory interface and a gas monitor connector adapted to couple the gas sampling line to a gas monitor.
The main coverage is for a connectorized respiratory gas sampling line that uses a polyether block amide tube portion together with a hydrophilic member disposed within the tube surrounding the channel, enabling coupling to both a patient respiratory interface and a gas monitor.
Stated Advantages
Moisture or condensed water permeates through the polyether block amide tube to provide a dried gas sample.
Respiratory gas components pass through essentially undistorted, supporting accurate monitoring and accurate gas analysis.
An optional drying assembly retains contaminants using a hydrophobic member.
The optional drying assembly retains bacteria and body excretions while allowing moisture removal.
Documented Applications
Analyzing respiratory gases as part of a gas analysis system, using the defined gas sampling line.
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